s2disk hang update

s2disk hang update

[Alan Jenkins]

Hi,

I've been suffering from s2disk hangs again.  This time, the hangs
were always before the hibernation image was written out.

They're still frustratingly random.  I just started trying to work out
whether doubling PAGES_FOR_IO makes them go away, but they went away
on their own again.

I did manage to capture a backtrace with debug info though.  Here it
is for 2.6.33-rc2.  (It has also happened on rc1).  I was able to get
the line numbers (using gdb, e.g.  "info line
*stop_machine_create+0x27"), having built the kernel with debug info.

[top of trace lost due to screen height]
? sync_page	(filemap.c:183)
? wait_on_page_bit	(filemap.c:506)
? wake_bit_function	(wait.c:174)
? shrink_page_list	(vmscan.c:696)
? __delayacct_blkio_end	(delayacct.c:94)
? finish_wait	(list.h:142)
? congestion_wait	(backing-dev.c:761)
? shrink_inactive_list	(vmscan.c:1193)
? scsi_request_fn	(spinlock.h:306)
? blk_run_queue	(blk-core.c:434)
? shrink_zone	(vmscan.c:1484)
? do_try_to_free_pages	(vmscan.c:1684)
? try_to_free_pages	(vmscan.c:1848)
? isolate_pages_global	(vmscan.c:980)
? __alloc_pages_nodemask	(page_alloc.c:1702)
? __get_free_pages	(page_alloc.c:1990)
? copy_process	(fork.c:237)
? do_fork	(fork.c:1443)
? rb_erase
? __switch_to
? kthread
? kernel_thread
? kthread
? kernel_thread_helper
? kthreadd
? kthreadd
? kernel_thread_helper

INFO: task s2disk:2174 blocked for more than 120 seconds
...
Call Trace:
? __switch_to
? schedule_timeout
? check_preempt_wakeup
? wait_for_common
? default_wake_function
? kthread_create:133
? worker_thread
? schedule
? create_workqueue_thread
? worker_thread
? __create_workqueue_key (workqueue.c:1006)
? stop_machine_create (stop_machine.c:121)
? disable_nonboot_cpus (cpu.c:370)
? hibernation_snapshot
? snapshot_ioctl
...
? sys_ioctl


Thanks for everything
Alan

s2disk hang update

[Alan Jenkins]

Hi,

I've been suffering from s2disk hangs again.  This time, the hangs
were always before the hibernation image was written out.

They're still frustratingly random.  I just started trying to work out
whether doubling PAGES_FOR_IO makes them go away, but they went away
on their own again.

I did manage to capture a backtrace with debug info though.  Here it
is for 2.6.33-rc2.  (It has also happened on rc1).  I was able to get
the line numbers (using gdb, e.g.  "info line
*stop_machine_create+0x27"), having built the kernel with debug info.

[top of trace lost due to screen height]
? sync_page	(filemap.c:183)
? wait_on_page_bit	(filemap.c:506)
? wake_bit_function	(wait.c:174)
? shrink_page_list	(vmscan.c:696)
? __delayacct_blkio_end	(delayacct.c:94)
? finish_wait	(list.h:142)
? congestion_wait	(backing-dev.c:761)
? shrink_inactive_list	(vmscan.c:1193)
? scsi_request_fn	(spinlock.h:306)
? blk_run_queue	(blk-core.c:434)
? shrink_zone	(vmscan.c:1484)
? do_try_to_free_pages	(vmscan.c:1684)
? try_to_free_pages	(vmscan.c:1848)
? isolate_pages_global	(vmscan.c:980)
? __alloc_pages_nodemask	(page_alloc.c:1702)
? __get_free_pages	(page_alloc.c:1990)
? copy_process	(fork.c:237)
? do_fork	(fork.c:1443)
? rb_erase
? __switch_to
? kthread
? kernel_thread
? kthread
? kernel_thread_helper
? kthreadd
? kthreadd
? kernel_thread_helper

INFO: task s2disk:2174 blocked for more than 120 seconds
...
Call Trace:
? __switch_to
? schedule_timeout
? check_preempt_wakeup
? wait_for_common
? default_wake_function
? kthread_create:133
? worker_thread
? schedule
? create_workqueue_thread
? worker_thread
? __create_workqueue_key (workqueue.c:1006)
? stop_machine_create (stop_machine.c:121)
? disable_nonboot_cpus (cpu.c:370)
? hibernation_snapshot
? snapshot_ioctl
...
? sys_ioctl


Thanks for everything
Alan

Re: s2disk hang update

[Rafael J. Wysocki]

On Saturday 02 January 2010, Alan Jenkins wrote:
> Hi,

Hi,

> I've been suffering from s2disk hangs again.  This time, the hangs
> were always before the hibernation image was written out.
> 
> They're still frustratingly random.  I just started trying to work out
> whether doubling PAGES_FOR_IO makes them go away, but they went away
> on their own again.
> 
> I did manage to capture a backtrace with debug info though.  Here it
> is for 2.6.33-rc2.  (It has also happened on rc1).  I was able to get
> the line numbers (using gdb, e.g.  "info line
> *stop_machine_create+0x27"), having built the kernel with debug info.
> 
> [top of trace lost due to screen height]
> ? sync_page	(filemap.c:183)
> ? wait_on_page_bit	(filemap.c:506)
> ? wake_bit_function	(wait.c:174)
> ? shrink_page_list	(vmscan.c:696)
> ? __delayacct_blkio_end	(delayacct.c:94)
> ? finish_wait	(list.h:142)
> ? congestion_wait	(backing-dev.c:761)
> ? shrink_inactive_list	(vmscan.c:1193)
> ? scsi_request_fn	(spinlock.h:306)
> ? blk_run_queue	(blk-core.c:434)
> ? shrink_zone	(vmscan.c:1484)
> ? do_try_to_free_pages	(vmscan.c:1684)
> ? try_to_free_pages	(vmscan.c:1848)
> ? isolate_pages_global	(vmscan.c:980)
> ? __alloc_pages_nodemask	(page_alloc.c:1702)
> ? __get_free_pages	(page_alloc.c:1990)
> ? copy_process	(fork.c:237)
> ? do_fork	(fork.c:1443)
> ? rb_erase
> ? __switch_to
> ? kthread
> ? kernel_thread
> ? kthread
> ? kernel_thread_helper
> ? kthreadd
> ? kthreadd
> ? kernel_thread_helper
> 
> INFO: task s2disk:2174 blocked for more than 120 seconds

This looks like we have run out of memory while creating a new kernel thread
and we have blocked on I/O while trying to free some space (quite obviously,
because the I/O doesn't work at this point).

I think it should help if you increase PAGES_FOR_IO, then.

Rafael

Re: s2disk hang update

[Rafael J. Wysocki]

On Saturday 02 January 2010, Alan Jenkins wrote:
> Hi,

Hi,

> I've been suffering from s2disk hangs again.  This time, the hangs
> were always before the hibernation image was written out.
> 
> They're still frustratingly random.  I just started trying to work out
> whether doubling PAGES_FOR_IO makes them go away, but they went away
> on their own again.
> 
> I did manage to capture a backtrace with debug info though.  Here it
> is for 2.6.33-rc2.  (It has also happened on rc1).  I was able to get
> the line numbers (using gdb, e.g.  "info line
> *stop_machine_create+0x27"), having built the kernel with debug info.
> 
> [top of trace lost due to screen height]
> ? sync_page	(filemap.c:183)
> ? wait_on_page_bit	(filemap.c:506)
> ? wake_bit_function	(wait.c:174)
> ? shrink_page_list	(vmscan.c:696)
> ? __delayacct_blkio_end	(delayacct.c:94)
> ? finish_wait	(list.h:142)
> ? congestion_wait	(backing-dev.c:761)
> ? shrink_inactive_list	(vmscan.c:1193)
> ? scsi_request_fn	(spinlock.h:306)
> ? blk_run_queue	(blk-core.c:434)
> ? shrink_zone	(vmscan.c:1484)
> ? do_try_to_free_pages	(vmscan.c:1684)
> ? try_to_free_pages	(vmscan.c:1848)
> ? isolate_pages_global	(vmscan.c:980)
> ? __alloc_pages_nodemask	(page_alloc.c:1702)
> ? __get_free_pages	(page_alloc.c:1990)
> ? copy_process	(fork.c:237)
> ? do_fork	(fork.c:1443)
> ? rb_erase
> ? __switch_to
> ? kthread
> ? kernel_thread
> ? kthread
> ? kernel_thread_helper
> ? kthreadd
> ? kthreadd
> ? kernel_thread_helper
> 
> INFO: task s2disk:2174 blocked for more than 120 seconds

This looks like we have run out of memory while creating a new kernel thread
and we have blocked on I/O while trying to free some space (quite obviously,
because the I/O doesn't work at this point).

I think it should help if you increase PAGES_FOR_IO, then.

Rafael

Re: s2disk hang update

[Rafael J. Wysocki]

On Saturday 02 January 2010, Alan Jenkins wrote:
> Hi,

Hi,

> I've been suffering from s2disk hangs again.  This time, the hangs
> were always before the hibernation image was written out.
> 
> They're still frustratingly random.  I just started trying to work out
> whether doubling PAGES_FOR_IO makes them go away, but they went away
> on their own again.
> 
> I did manage to capture a backtrace with debug info though.  Here it
> is for 2.6.33-rc2.  (It has also happened on rc1).  I was able to get
> the line numbers (using gdb, e.g.  "info line
> *stop_machine_create+0x27"), having built the kernel with debug info.
> 
> [top of trace lost due to screen height]
> ? sync_page	(filemap.c:183)
> ? wait_on_page_bit	(filemap.c:506)
> ? wake_bit_function	(wait.c:174)
> ? shrink_page_list	(vmscan.c:696)
> ? __delayacct_blkio_end	(delayacct.c:94)
> ? finish_wait	(list.h:142)
> ? congestion_wait	(backing-dev.c:761)
> ? shrink_inactive_list	(vmscan.c:1193)
> ? scsi_request_fn	(spinlock.h:306)
> ? blk_run_queue	(blk-core.c:434)
> ? shrink_zone	(vmscan.c:1484)
> ? do_try_to_free_pages	(vmscan.c:1684)
> ? try_to_free_pages	(vmscan.c:1848)
> ? isolate_pages_global	(vmscan.c:980)
> ? __alloc_pages_nodemask	(page_alloc.c:1702)
> ? __get_free_pages	(page_alloc.c:1990)
> ? copy_process	(fork.c:237)
> ? do_fork	(fork.c:1443)
> ? rb_erase
> ? __switch_to
> ? kthread
> ? kernel_thread
> ? kthread
> ? kernel_thread_helper
> ? kthreadd
> ? kthreadd
> ? kernel_thread_helper
> 
> INFO: task s2disk:2174 blocked for more than 120 seconds

This looks like we have run out of memory while creating a new kernel thread
and we have blocked on I/O while trying to free some space (quite obviously,
because the I/O doesn't work at this point).

I think it should help if you increase PAGES_FOR_IO, then.

Rafael

Re: s2disk hang update

[Alan Jenkins]

[-- Attachment #1: Type: text/plain, Size: 3741 bytes --]

On 1/2/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> On Saturday 02 January 2010, Alan Jenkins wrote:
> Hi,
>
>> I've been suffering from s2disk hangs again.  This time, the hangs
>> were always before the hibernation image was written out.
>>
>> They're still frustratingly random.  I just started trying to work out
>> whether doubling PAGES_FOR_IO makes them go away, but they went away
>> on their own again.
>>
>> I did manage to capture a backtrace with debug info though.  Here it
>> is for 2.6.33-rc2.  (It has also happened on rc1).  I was able to get
>> the line numbers (using gdb, e.g.  "info line
>> *stop_machine_create+0x27"), having built the kernel with debug info.
>>
>> [top of trace lost due to screen height]
>> ? sync_page	(filemap.c:183)
>> ? wait_on_page_bit	(filemap.c:506)
>> ? wake_bit_function	(wait.c:174)
>> ? shrink_page_list	(vmscan.c:696)
>> ? __delayacct_blkio_end	(delayacct.c:94)
>> ? finish_wait	(list.h:142)
>> ? congestion_wait	(backing-dev.c:761)
>> ? shrink_inactive_list	(vmscan.c:1193)
>> ? scsi_request_fn	(spinlock.h:306)
>> ? blk_run_queue	(blk-core.c:434)
>> ? shrink_zone	(vmscan.c:1484)
>> ? do_try_to_free_pages	(vmscan.c:1684)
>> ? try_to_free_pages	(vmscan.c:1848)
>> ? isolate_pages_global	(vmscan.c:980)
>> ? __alloc_pages_nodemask	(page_alloc.c:1702)
>> ? __get_free_pages	(page_alloc.c:1990)
>> ? copy_process	(fork.c:237)
>> ? do_fork	(fork.c:1443)
>> ? rb_erase
>> ? __switch_to
>> ? kthread
>> ? kernel_thread
>> ? kthread
>> ? kernel_thread_helper
>> ? kthreadd
>> ? kthreadd
>> ? kernel_thread_helper
>>
>> INFO: task s2disk:2174 blocked for more than 120 seconds
>
> This looks like we have run out of memory while creating a new kernel thread
> and we have blocked on I/O while trying to free some space (quite obviously,
> because the I/O doesn't work at this point).

For context, the kernel thread being created here is the stop_machine
thread.  It is created by disable_nonboot_cpus(), called from
hibernation_snapshot().  See e.g. this hung task backtrace -

http://picasaweb.google.com/lh/photo/BkKUwZCrQ2ceBIM9ZOh7Ow?feat=directlink

> I think it should help if you increase PAGES_FOR_IO, then.

Ok, it's been happening again on 2.6.33-rc6.  Unfortunately increasing
PAGES_FOR_IO doesn't help.

I've been using a test patch to make PAGES_FOR_IO tunable at run time.
 I get the same hang if I increase it by a factor of 10, to 10240:

# cd /sys/module/kernel/parameters/
# ls
consoleblank  initcall_debug  PAGES_FOR_IO  panic  pause_on_oops  SPARE_PAGES
# echo 10240 > PAGES_FOR_IO
# echo 2560 > SPARE_PAGES
# cat SPARE_PAGES
2560
# cat PAGES_FOR_IO
10240

I also added a debug patch to try and understand the calculations with
PAGES_FOR_IO in hibernate_preallocate_memory().  I still don't really
understand them and there could easily be errors in my debug patch,
but the output is interesting.

Increasing PAGES_FOR_IO by almost 10000 has the expected effect of
decreasing "max_size" by the same amount.  However it doesn't appear
to increase the number of free pages at the critical moment.

PAGES_FOR_IO = 1024:
http://picasaweb.google.com/lh/photo/DYQGvB_4hvCvVuxZf2ibxg?feat=directlink

PAGES_FOR_IO = 10240:
http://picasaweb.google.com/lh/photo/AIkV_ZBwt22nzN-JdOJCWA?feat=directlink


You may remember that I was originally able to avoid the hang by
reverting commit 5f8dcc2.  It doesn't revert cleanly any more.
However, I tried applying my test&debug patches on top of 5f8dcc2~1
(just before the commit that triggered the hang).  That kernel
apparently left ~5000 pages free at hibernation time, v.s. ~1200 when
testing the same scenario on 2.6.33-rc6.  (As before, the number of
free pages remained the same if I increased PAGES_FOR_IO to 10240).

Regards
Alan

[-- Attachment #2: test.patch --]
[-- Type: text/x-patch, Size: 1303 bytes --]

diff --git a/kernel/power/power.h b/kernel/power/power.h
index 46c5a26..05611d4 100644
--- a/kernel/power/power.h
+++ b/kernel/power/power.h
@@ -37,13 +37,13 @@ static inline char *check_image_kernel(struct swsusp_info *info)
  * Keep some memory free so that I/O operations can succeed without paging
  * [Might this be more than 4 MB?]
  */
-#define PAGES_FOR_IO	((4096 * 1024) >> PAGE_SHIFT)
+extern int PAGES_FOR_IO;
 
 /*
  * Keep 1 MB of memory free so that device drivers can allocate some pages in
  * their .suspend() routines without breaking the suspend to disk.
  */
-#define SPARE_PAGES	((1024 * 1024) >> PAGE_SHIFT)
+extern int SPARE_PAGES;
 
 /* kernel/power/hibernate.c */
 extern int hibernation_snapshot(int platform_mode);
diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
index 36cb168..0985d11 100644
--- a/kernel/power/snapshot.c
+++ b/kernel/power/snapshot.c
@@ -35,6 +35,13 @@
 
 #include "power.h"
 
+int PAGES_FOR_IO = (4096 * 1024) >> PAGE_SHIFT;
+core_param(PAGES_FOR_IO, PAGES_FOR_IO, int, 0644);
+
+int SPARE_PAGES = (1024 * 1024) >> PAGE_SHIFT;
+core_param(SPARE_PAGES, SPARE_PAGES, int, 0644);
+
+
 static int swsusp_page_is_free(struct page *);
 static void swsusp_set_page_forbidden(struct page *);
 static void swsusp_unset_page_forbidden(struct page *);

[-- Attachment #3: debug.patch --]
[-- Type: text/x-patch, Size: 4876 bytes --]

diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c
index bbfe472..1130ed0 100644
--- a/kernel/power/hibernate.c
+++ b/kernel/power/hibernate.c
@@ -262,10 +262,12 @@ static int create_image(int platform_mode)
 	if (error || hibernation_test(TEST_PLATFORM))
 		goto Platform_finish;
 
+	dbg_log_free_pages();
 	error = disable_nonboot_cpus();
 	if (error || hibernation_test(TEST_CPUS)
 	    || hibernation_testmode(HIBERNATION_TEST))
 		goto Enable_cpus;
+	dbg_log_free_pages();
 
 	local_irq_disable();
 
@@ -496,9 +498,11 @@ int hibernation_platform_enter(void)
 	if (error)
 		goto Platform_finish;
 
+	dbg_log_free_pages();
 	error = disable_nonboot_cpus();
 	if (error)
 		goto Platform_finish;
+	dbg_log_free_pages();
 
 	local_irq_disable();
 	sysdev_suspend(PMSG_HIBERNATE);
diff --git a/kernel/power/power.h b/kernel/power/power.h
index 05611d4..496de77 100644
--- a/kernel/power/power.h
+++ b/kernel/power/power.h
@@ -236,3 +236,5 @@ static inline void suspend_thaw_processes(void)
 {
 }
 #endif
+
+extern void dbg_log_free_pages(void);
diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
index 0985d11..b7241a9 100644
--- a/kernel/power/snapshot.c
+++ b/kernel/power/snapshot.c
@@ -64,6 +64,31 @@ struct pbe *restore_pblist;
 /* Pointer to an auxiliary buffer (1 page) */
 static void *buffer;
 
+
+void dbg_log_free_pages(void)
+{
+	unsigned long free = 0, freeable;
+	struct zone *zone;
+
+	for_each_populated_zone(zone) {
+		if (is_highmem(zone))
+			free += zone_page_state(zone, NR_FREE_PAGES);
+		else
+			free += zone_page_state(zone, NR_FREE_PAGES);
+	}
+
+	freeable = global_page_state(NR_SLAB_RECLAIMABLE)
+		+ global_page_state(NR_ACTIVE_ANON)
+		+ global_page_state(NR_INACTIVE_ANON)
+		+ global_page_state(NR_ACTIVE_FILE)
+		+ global_page_state(NR_INACTIVE_FILE)
+		- global_page_state(NR_FILE_MAPPED);
+
+	pr_info("PM_D: %ld pages free + %ld freeable (total %ld)\n",
+		free, freeable, free + freeable);
+}
+
+
 /**
  *	@safe_needed - on resume, for storing the PBE list and the image,
  *	we can only use memory pages that do not conflict with the pages
@@ -1268,7 +1293,7 @@ int hibernate_preallocate_memory(void)
 	struct timeval start, stop;
 	int error;
 
-	printk(KERN_INFO "PM: Preallocating image memory... ");
+	printk(KERN_INFO "PM: Preallocating image memory...\n");
 	do_gettimeofday(&start);
 
 	error = memory_bm_create(&orig_bm, GFP_IMAGE, PG_ANY);
@@ -1285,6 +1310,8 @@ int hibernate_preallocate_memory(void)
 	/* Count the number of saveable data pages. */
 	save_highmem = count_highmem_pages();
 	saveable = count_data_pages();
+	pr_info("PM_D: saveable pages: %ld + %ld (highmem) = %ld\n",
+		saveable, save_highmem, saveable + save_highmem);
 
 	/*
 	 * Compute the total number of page frames we can use (count) and the
@@ -1301,29 +1328,50 @@ int hibernate_preallocate_memory(void)
 		else
 			count += zone_page_state(zone, NR_FREE_PAGES);
 	}
+	pr_info("PM_D: total page count: %ld + %ld (highmem) = %ld\n",
+		count, highmem, count + highmem);
+
 	count += highmem;
+	
+	pr_info("PM_D: total page count: %ld - %ld (pgalloc reserve) = %ld\n",
+		count, totalreserve_pages, count - totalreserve_pages);
+
 	count -= totalreserve_pages;
 
+	pr_info("PM_D: image metadata needed = %ld\n", size);
+
 	/* Compute the maximum number of saveable pages to leave in memory. */
 	max_size = (count - (size + PAGES_FOR_IO)) / 2 - 2 * SPARE_PAGES;
+
+	pr_info("PM_D: max_size = %ld\n", max_size);
+
 	size = DIV_ROUND_UP(image_size, PAGE_SIZE);
 	if (size > max_size)
 		size = max_size;
+
+	pr_info("PM_D: (max) size = %ld\n", size);
+
 	/*
 	 * If the maximum is not less than the current number of saveable pages
 	 * in memory, allocate page frames for the image and we're done.
 	 */
 	if (size >= saveable) {
+		dbg_log_free_pages();
+		pr_info("PM_D: ok, go ahead with full image\n");
 		pages = preallocate_image_highmem(save_highmem);
 		pages += preallocate_image_memory(saveable - pages);
+		dbg_log_free_pages();
 		goto out;
 	}
+	pr_info("PM_D: need to free some pages\n");
 
 	/* Estimate the minimum size of the image. */
 	pages = minimum_image_size(saveable);
 	if (size < pages)
 		size = min_t(unsigned long, pages, max_size);
 
+	pr_info("PM_D: (min) pages = %ld\n", pages);
+
 	/*
 	 * Let the memory management subsystem know that we're going to need a
 	 * large number of page frames to allocate and make it free some memory.
@@ -1357,11 +1405,13 @@ int hibernate_preallocate_memory(void)
 	 * pages in memory, but we have allocated more.  Release the excessive
 	 * ones now.
 	 */
+	dbg_log_free_pages();
 	free_unnecessary_pages();
-
+	dbg_log_free_pages();
  out:
 	do_gettimeofday(&stop);
-	printk(KERN_CONT "done (allocated %lu pages)\n", pages);
+	printk(KERN_INFO "PM: done (allocated %lu pages)\n", pages);
+	
 	swsusp_show_speed(&start, &stop, pages, "Allocated");
 
 	return 0;

[-- Attachment #4: .config --]
[-- Type: text/x-mpsub, Size: 68380 bytes --]

#
# Automatically generated make config: don't edit
# Linux kernel version: 2.6.33-rc5
# Fri Jan 29 17:07:41 2010
#
# CONFIG_64BIT is not set
CONFIG_X86_32=y
# CONFIG_X86_64 is not set
CONFIG_X86=y
CONFIG_OUTPUT_FORMAT="elf32-i386"
CONFIG_ARCH_DEFCONFIG="arch/x86/configs/i386_defconfig"
CONFIG_GENERIC_TIME=y
CONFIG_GENERIC_CMOS_UPDATE=y
CONFIG_CLOCKSOURCE_WATCHDOG=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_HAVE_LATENCYTOP_SUPPORT=y
CONFIG_MMU=y
CONFIG_ZONE_DMA=y
CONFIG_GENERIC_ISA_DMA=y
CONFIG_GENERIC_IOMAP=y
CONFIG_GENERIC_BUG=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_ARCH_MAY_HAVE_PC_FDC=y
# CONFIG_RWSEM_GENERIC_SPINLOCK is not set
CONFIG_RWSEM_XCHGADD_ALGORITHM=y
CONFIG_ARCH_HAS_CPU_IDLE_WAIT=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
# CONFIG_GENERIC_TIME_VSYSCALL is not set
CONFIG_ARCH_HAS_CPU_RELAX=y
CONFIG_ARCH_HAS_DEFAULT_IDLE=y
CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
CONFIG_HAVE_SETUP_PER_CPU_AREA=y
CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y
CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK=y
# CONFIG_HAVE_CPUMASK_OF_CPU_MAP is not set
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
# CONFIG_ZONE_DMA32 is not set
CONFIG_ARCH_POPULATES_NODE_MAP=y
# CONFIG_AUDIT_ARCH is not set
CONFIG_ARCH_SUPPORTS_OPTIMIZED_INLINING=y
CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y
CONFIG_HAVE_INTEL_TXT=y
CONFIG_GENERIC_HARDIRQS=y
CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ=y
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_GENERIC_PENDING_IRQ=y
CONFIG_USE_GENERIC_SMP_HELPERS=y
CONFIG_X86_32_SMP=y
CONFIG_X86_HT=y
CONFIG_X86_TRAMPOLINE=y
CONFIG_KTIME_SCALAR=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
CONFIG_CONSTRUCTORS=y

#
# General setup
#
CONFIG_EXPERIMENTAL=y
CONFIG_LOCK_KERNEL=y
CONFIG_INIT_ENV_ARG_LIMIT=32
CONFIG_LOCALVERSION="eeepc"
CONFIG_LOCALVERSION_AUTO=y
CONFIG_HAVE_KERNEL_GZIP=y
CONFIG_HAVE_KERNEL_BZIP2=y
CONFIG_HAVE_KERNEL_LZMA=y
CONFIG_HAVE_KERNEL_LZO=y
CONFIG_KERNEL_GZIP=y
# CONFIG_KERNEL_BZIP2 is not set
# CONFIG_KERNEL_LZMA is not set
# CONFIG_KERNEL_LZO is not set
CONFIG_SWAP=y
CONFIG_SYSVIPC=y
CONFIG_SYSVIPC_SYSCTL=y
CONFIG_POSIX_MQUEUE=y
CONFIG_POSIX_MQUEUE_SYSCTL=y
CONFIG_BSD_PROCESS_ACCT=y
CONFIG_BSD_PROCESS_ACCT_V3=y
CONFIG_TASKSTATS=y
CONFIG_TASK_DELAY_ACCT=y
CONFIG_TASK_XACCT=y
CONFIG_TASK_IO_ACCOUNTING=y
CONFIG_AUDIT=y
CONFIG_AUDITSYSCALL=y
CONFIG_AUDIT_TREE=y

#
# RCU Subsystem
#
CONFIG_TREE_RCU=y
# CONFIG_TREE_PREEMPT_RCU is not set
# CONFIG_TINY_RCU is not set
# CONFIG_RCU_TRACE is not set
CONFIG_RCU_FANOUT=32
# CONFIG_RCU_FANOUT_EXACT is not set
# CONFIG_TREE_RCU_TRACE is not set
CONFIG_IKCONFIG=m
# CONFIG_IKCONFIG_PROC is not set
CONFIG_LOG_BUF_SHIFT=17
CONFIG_HAVE_UNSTABLE_SCHED_CLOCK=y
CONFIG_GROUP_SCHED=y
CONFIG_FAIR_GROUP_SCHED=y
# CONFIG_RT_GROUP_SCHED is not set
# CONFIG_USER_SCHED is not set
CONFIG_CGROUP_SCHED=y
CONFIG_CGROUPS=y
# CONFIG_CGROUP_DEBUG is not set
CONFIG_CGROUP_NS=y
CONFIG_CGROUP_FREEZER=y
CONFIG_CGROUP_DEVICE=y
CONFIG_CPUSETS=y
CONFIG_PROC_PID_CPUSET=y
CONFIG_CGROUP_CPUACCT=y
# CONFIG_RESOURCE_COUNTERS is not set
# CONFIG_SYSFS_DEPRECATED_V2 is not set
CONFIG_RELAY=y
CONFIG_NAMESPACES=y
CONFIG_UTS_NS=y
CONFIG_IPC_NS=y
CONFIG_USER_NS=y
CONFIG_PID_NS=y
CONFIG_NET_NS=y
CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE=""
CONFIG_RD_GZIP=y
CONFIG_RD_BZIP2=y
CONFIG_RD_LZMA=y
CONFIG_RD_LZO=y
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
CONFIG_SYSCTL=y
CONFIG_ANON_INODES=y
# CONFIG_EMBEDDED is not set
CONFIG_UID16=y
CONFIG_SYSCTL_SYSCALL=y
CONFIG_KALLSYMS=y
# CONFIG_KALLSYMS_ALL is not set
# CONFIG_KALLSYMS_EXTRA_PASS is not set
CONFIG_HOTPLUG=y
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_ELF_CORE=y
CONFIG_PCSPKR_PLATFORM=y
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_EPOLL=y
CONFIG_SIGNALFD=y
CONFIG_TIMERFD=y
CONFIG_EVENTFD=y
CONFIG_SHMEM=y
CONFIG_AIO=y
CONFIG_HAVE_PERF_EVENTS=y

#
# Kernel Performance Events And Counters
#
CONFIG_PERF_EVENTS=y
CONFIG_EVENT_PROFILE=y
CONFIG_PERF_COUNTERS=y
# CONFIG_DEBUG_PERF_USE_VMALLOC is not set
CONFIG_VM_EVENT_COUNTERS=y
CONFIG_PCI_QUIRKS=y
# CONFIG_COMPAT_BRK is not set
CONFIG_SLAB=y
# CONFIG_SLUB is not set
# CONFIG_SLOB is not set
CONFIG_PROFILING=y
CONFIG_TRACEPOINTS=y
# CONFIG_OPROFILE is not set
CONFIG_HAVE_OPROFILE=y
# CONFIG_KPROBES is not set
CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
CONFIG_HAVE_IOREMAP_PROT=y
CONFIG_HAVE_KPROBES=y
CONFIG_HAVE_KRETPROBES=y
CONFIG_HAVE_ARCH_TRACEHOOK=y
CONFIG_HAVE_DMA_ATTRS=y
CONFIG_HAVE_DMA_API_DEBUG=y
CONFIG_HAVE_HW_BREAKPOINT=y
CONFIG_HAVE_USER_RETURN_NOTIFIER=y

#
# GCOV-based kernel profiling
#
# CONFIG_GCOV_KERNEL is not set
CONFIG_SLOW_WORK=y
# CONFIG_SLOW_WORK_DEBUG is not set
CONFIG_HAVE_GENERIC_DMA_COHERENT=y
CONFIG_SLABINFO=y
CONFIG_RT_MUTEXES=y
CONFIG_BASE_SMALL=0
CONFIG_MODULES=y
CONFIG_MODULE_FORCE_LOAD=y
CONFIG_MODULE_UNLOAD=y
# CONFIG_MODULE_FORCE_UNLOAD is not set
CONFIG_MODVERSIONS=y
# CONFIG_MODULE_SRCVERSION_ALL is not set
CONFIG_STOP_MACHINE=y
CONFIG_BLOCK=y
CONFIG_LBDAF=y
CONFIG_BLK_DEV_BSG=y
CONFIG_BLK_DEV_INTEGRITY=y
# CONFIG_BLK_CGROUP is not set

#
# IO Schedulers
#
CONFIG_IOSCHED_NOOP=y
CONFIG_IOSCHED_DEADLINE=y
CONFIG_IOSCHED_CFQ=y
# CONFIG_CFQ_GROUP_IOSCHED is not set
# CONFIG_DEFAULT_DEADLINE is not set
CONFIG_DEFAULT_CFQ=y
# CONFIG_DEFAULT_NOOP is not set
CONFIG_DEFAULT_IOSCHED="cfq"
# CONFIG_INLINE_SPIN_TRYLOCK is not set
# CONFIG_INLINE_SPIN_TRYLOCK_BH is not set
# CONFIG_INLINE_SPIN_LOCK is not set
# CONFIG_INLINE_SPIN_LOCK_BH is not set
# CONFIG_INLINE_SPIN_LOCK_IRQ is not set
# CONFIG_INLINE_SPIN_LOCK_IRQSAVE is not set
CONFIG_INLINE_SPIN_UNLOCK=y
# CONFIG_INLINE_SPIN_UNLOCK_BH is not set
CONFIG_INLINE_SPIN_UNLOCK_IRQ=y
# CONFIG_INLINE_SPIN_UNLOCK_IRQRESTORE is not set
# CONFIG_INLINE_READ_TRYLOCK is not set
# CONFIG_INLINE_READ_LOCK is not set
# CONFIG_INLINE_READ_LOCK_BH is not set
# CONFIG_INLINE_READ_LOCK_IRQ is not set
# CONFIG_INLINE_READ_LOCK_IRQSAVE is not set
CONFIG_INLINE_READ_UNLOCK=y
# CONFIG_INLINE_READ_UNLOCK_BH is not set
CONFIG_INLINE_READ_UNLOCK_IRQ=y
# CONFIG_INLINE_READ_UNLOCK_IRQRESTORE is not set
# CONFIG_INLINE_WRITE_TRYLOCK is not set
# CONFIG_INLINE_WRITE_LOCK is not set
# CONFIG_INLINE_WRITE_LOCK_BH is not set
# CONFIG_INLINE_WRITE_LOCK_IRQ is not set
# CONFIG_INLINE_WRITE_LOCK_IRQSAVE is not set
CONFIG_INLINE_WRITE_UNLOCK=y
# CONFIG_INLINE_WRITE_UNLOCK_BH is not set
CONFIG_INLINE_WRITE_UNLOCK_IRQ=y
# CONFIG_INLINE_WRITE_UNLOCK_IRQRESTORE is not set
CONFIG_MUTEX_SPIN_ON_OWNER=y
CONFIG_FREEZER=y

#
# Processor type and features
#
CONFIG_TICK_ONESHOT=y
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
CONFIG_SMP=y
# CONFIG_SPARSE_IRQ is not set
CONFIG_X86_MPPARSE=y
CONFIG_X86_BIGSMP=y
# CONFIG_X86_EXTENDED_PLATFORM is not set
CONFIG_X86_SUPPORTS_MEMORY_FAILURE=y
CONFIG_SCHED_OMIT_FRAME_POINTER=y
# CONFIG_PARAVIRT_GUEST is not set
# CONFIG_MEMTEST is not set
# CONFIG_M386 is not set
# CONFIG_M486 is not set
# CONFIG_M586 is not set
# CONFIG_M586TSC is not set
# CONFIG_M586MMX is not set
# CONFIG_M686 is not set
# CONFIG_MPENTIUMII is not set
# CONFIG_MPENTIUMIII is not set
CONFIG_MPENTIUMM=y
# CONFIG_MPENTIUM4 is not set
# CONFIG_MK6 is not set
# CONFIG_MK7 is not set
# CONFIG_MK8 is not set
# CONFIG_MCRUSOE is not set
# CONFIG_MEFFICEON is not set
# CONFIG_MWINCHIPC6 is not set
# CONFIG_MWINCHIP3D is not set
# CONFIG_MGEODEGX1 is not set
# CONFIG_MGEODE_LX is not set
# CONFIG_MCYRIXIII is not set
# CONFIG_MVIAC3_2 is not set
# CONFIG_MVIAC7 is not set
# CONFIG_MPSC is not set
# CONFIG_MCORE2 is not set
# CONFIG_MATOM is not set
# CONFIG_GENERIC_CPU is not set
CONFIG_X86_GENERIC=y
CONFIG_X86_CPU=y
CONFIG_X86_INTERNODE_CACHE_SHIFT=6
CONFIG_X86_CMPXCHG=y
CONFIG_X86_L1_CACHE_SHIFT=6
CONFIG_X86_XADD=y
CONFIG_X86_WP_WORKS_OK=y
CONFIG_X86_INVLPG=y
CONFIG_X86_BSWAP=y
CONFIG_X86_POPAD_OK=y
CONFIG_X86_INTEL_USERCOPY=y
CONFIG_X86_USE_PPRO_CHECKSUM=y
CONFIG_X86_TSC=y
CONFIG_X86_CMPXCHG64=y
CONFIG_X86_CMOV=y
CONFIG_X86_MINIMUM_CPU_FAMILY=5
CONFIG_X86_DEBUGCTLMSR=y
CONFIG_CPU_SUP_INTEL=y
CONFIG_CPU_SUP_CYRIX_32=y
CONFIG_CPU_SUP_AMD=y
CONFIG_CPU_SUP_CENTAUR=y
CONFIG_CPU_SUP_TRANSMETA_32=y
CONFIG_CPU_SUP_UMC_32=y
# CONFIG_X86_DS is not set
CONFIG_HPET_TIMER=y
CONFIG_HPET_EMULATE_RTC=y
CONFIG_DMI=y
# CONFIG_IOMMU_HELPER is not set
CONFIG_IOMMU_API=y
CONFIG_NR_CPUS=32
CONFIG_SCHED_SMT=y
CONFIG_SCHED_MC=y
# CONFIG_PREEMPT_NONE is not set
CONFIG_PREEMPT_VOLUNTARY=y
# CONFIG_PREEMPT is not set
CONFIG_X86_LOCAL_APIC=y
CONFIG_X86_IO_APIC=y
CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS=y
CONFIG_X86_MCE=y
CONFIG_X86_MCE_INTEL=y
CONFIG_X86_MCE_AMD=y
# CONFIG_X86_ANCIENT_MCE is not set
CONFIG_X86_MCE_THRESHOLD=y
# CONFIG_X86_MCE_INJECT is not set
CONFIG_X86_THERMAL_VECTOR=y
CONFIG_VM86=y
# CONFIG_TOSHIBA is not set
# CONFIG_I8K is not set
# CONFIG_X86_REBOOTFIXUPS is not set
# CONFIG_MICROCODE is not set
# CONFIG_X86_MSR is not set
# CONFIG_X86_CPUID is not set
# CONFIG_NOHIGHMEM is not set
CONFIG_HIGHMEM4G=y
# CONFIG_HIGHMEM64G is not set
CONFIG_PAGE_OFFSET=0xC0000000
CONFIG_HIGHMEM=y
# CONFIG_ARCH_PHYS_ADDR_T_64BIT is not set
CONFIG_ARCH_FLATMEM_ENABLE=y
CONFIG_ARCH_SPARSEMEM_ENABLE=y
CONFIG_ARCH_SELECT_MEMORY_MODEL=y
CONFIG_ILLEGAL_POINTER_VALUE=0
CONFIG_SELECT_MEMORY_MODEL=y
CONFIG_FLATMEM_MANUAL=y
# CONFIG_DISCONTIGMEM_MANUAL is not set
# CONFIG_SPARSEMEM_MANUAL is not set
CONFIG_FLATMEM=y
CONFIG_FLAT_NODE_MEM_MAP=y
CONFIG_SPARSEMEM_STATIC=y
CONFIG_PAGEFLAGS_EXTENDED=y
CONFIG_SPLIT_PTLOCK_CPUS=4
# CONFIG_PHYS_ADDR_T_64BIT is not set
CONFIG_ZONE_DMA_FLAG=1
CONFIG_BOUNCE=y
CONFIG_VIRT_TO_BUS=y
# CONFIG_KSM is not set
CONFIG_DEFAULT_MMAP_MIN_ADDR=65536
CONFIG_ARCH_SUPPORTS_MEMORY_FAILURE=y
# CONFIG_MEMORY_FAILURE is not set
CONFIG_HIGHPTE=y
# CONFIG_X86_CHECK_BIOS_CORRUPTION is not set
CONFIG_X86_RESERVE_LOW_64K=y
# CONFIG_MATH_EMULATION is not set
CONFIG_MTRR=y
CONFIG_MTRR_SANITIZER=y
CONFIG_MTRR_SANITIZER_ENABLE_DEFAULT=0
CONFIG_MTRR_SANITIZER_SPARE_REG_NR_DEFAULT=1
CONFIG_X86_PAT=y
CONFIG_ARCH_USES_PG_UNCACHED=y
CONFIG_EFI=y
CONFIG_SECCOMP=y
CONFIG_CC_STACKPROTECTOR=y
# CONFIG_HZ_100 is not set
CONFIG_HZ_250=y
# CONFIG_HZ_300 is not set
# CONFIG_HZ_1000 is not set
CONFIG_HZ=250
CONFIG_SCHED_HRTICK=y
CONFIG_KEXEC=y
# CONFIG_CRASH_DUMP is not set
# CONFIG_KEXEC_JUMP is not set
CONFIG_PHYSICAL_START=0x1000000
CONFIG_RELOCATABLE=y
CONFIG_X86_NEED_RELOCS=y
CONFIG_PHYSICAL_ALIGN=0x1000000
CONFIG_HOTPLUG_CPU=y
# CONFIG_COMPAT_VDSO is not set
# CONFIG_CMDLINE_BOOL is not set
CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y

#
# Power management and ACPI options
#
CONFIG_PM=y
# CONFIG_PM_DEBUG is not set
CONFIG_PM_SLEEP_SMP=y
CONFIG_PM_SLEEP=y
CONFIG_SUSPEND=y
CONFIG_SUSPEND_FREEZER=y
CONFIG_HIBERNATION_NVS=y
CONFIG_HIBERNATION=y
CONFIG_PM_STD_PARTITION=""
# CONFIG_PM_RUNTIME is not set
CONFIG_ACPI=y
CONFIG_ACPI_SLEEP=y
CONFIG_ACPI_PROCFS=y
# CONFIG_ACPI_PROCFS_POWER is not set
# CONFIG_ACPI_POWER_METER is not set
CONFIG_ACPI_SYSFS_POWER=y
# CONFIG_ACPI_PROC_EVENT is not set
CONFIG_ACPI_AC=m
CONFIG_ACPI_BATTERY=m
CONFIG_ACPI_BUTTON=m
CONFIG_ACPI_VIDEO=m
CONFIG_ACPI_FAN=m
CONFIG_ACPI_DOCK=y
CONFIG_ACPI_PROCESSOR=m
CONFIG_ACPI_HOTPLUG_CPU=y
# CONFIG_ACPI_PROCESSOR_AGGREGATOR is not set
CONFIG_ACPI_THERMAL=m
# CONFIG_ACPI_CUSTOM_DSDT is not set
CONFIG_ACPI_BLACKLIST_YEAR=0
CONFIG_ACPI_DEBUG=y
# CONFIG_ACPI_DEBUG_FUNC_TRACE is not set
# CONFIG_ACPI_PCI_SLOT is not set
CONFIG_X86_PM_TIMER=y
CONFIG_ACPI_CONTAINER=m
# CONFIG_ACPI_SBS is not set
# CONFIG_ACPI_APEI is not set
# CONFIG_SFI is not set
# CONFIG_APM is not set

#
# CPU Frequency scaling
#
# CONFIG_CPU_FREQ is not set
CONFIG_CPU_IDLE=y
CONFIG_CPU_IDLE_GOV_LADDER=y
CONFIG_CPU_IDLE_GOV_MENU=y

#
# Bus options (PCI etc.)
#
CONFIG_PCI=y
# CONFIG_PCI_GOBIOS is not set
# CONFIG_PCI_GOMMCONFIG is not set
# CONFIG_PCI_GODIRECT is not set
# CONFIG_PCI_GOOLPC is not set
CONFIG_PCI_GOANY=y
CONFIG_PCI_BIOS=y
CONFIG_PCI_DIRECT=y
CONFIG_PCI_MMCONFIG=y
CONFIG_PCI_DOMAINS=y
CONFIG_DMAR=y
# CONFIG_DMAR_DEFAULT_ON is not set
CONFIG_DMAR_FLOPPY_WA=y
CONFIG_PCIEPORTBUS=y
# CONFIG_HOTPLUG_PCI_PCIE is not set
CONFIG_PCIEAER=y
# CONFIG_PCIE_ECRC is not set
# CONFIG_PCIEAER_INJECT is not set
# CONFIG_PCIEASPM is not set
CONFIG_ARCH_SUPPORTS_MSI=y
CONFIG_PCI_MSI=y
CONFIG_PCI_LEGACY=y
# CONFIG_PCI_DEBUG is not set
# CONFIG_PCI_STUB is not set
CONFIG_HT_IRQ=y
CONFIG_PCI_IOV=y
CONFIG_PCI_IOAPIC=y
CONFIG_ISA_DMA_API=y
CONFIG_ISA=y
# CONFIG_EISA is not set
# CONFIG_MCA is not set
# CONFIG_SCx200 is not set
# CONFIG_OLPC is not set
# CONFIG_PCCARD is not set
CONFIG_HOTPLUG_PCI=m
# CONFIG_HOTPLUG_PCI_FAKE is not set
# CONFIG_HOTPLUG_PCI_COMPAQ is not set
# CONFIG_HOTPLUG_PCI_IBM is not set
# CONFIG_HOTPLUG_PCI_ACPI is not set
# CONFIG_HOTPLUG_PCI_CPCI is not set
# CONFIG_HOTPLUG_PCI_SHPC is not set

#
# Executable file formats / Emulations
#
CONFIG_BINFMT_ELF=y
CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
CONFIG_HAVE_AOUT=y
# CONFIG_BINFMT_AOUT is not set
# CONFIG_BINFMT_MISC is not set
CONFIG_HAVE_ATOMIC_IOMAP=y
CONFIG_NET=y

#
# Networking options
#
CONFIG_PACKET=y
CONFIG_PACKET_MMAP=y
CONFIG_UNIX=y
CONFIG_XFRM=y
# CONFIG_XFRM_USER is not set
# CONFIG_XFRM_SUB_POLICY is not set
# CONFIG_XFRM_MIGRATE is not set
# CONFIG_XFRM_STATISTICS is not set
CONFIG_XFRM_IPCOMP=m
CONFIG_NET_KEY=m
# CONFIG_NET_KEY_MIGRATE is not set
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
CONFIG_IP_ADVANCED_ROUTER=y
CONFIG_ASK_IP_FIB_HASH=y
# CONFIG_IP_FIB_TRIE is not set
CONFIG_IP_FIB_HASH=y
CONFIG_IP_MULTIPLE_TABLES=y
CONFIG_IP_ROUTE_MULTIPATH=y
CONFIG_IP_ROUTE_VERBOSE=y
# CONFIG_IP_PNP is not set
# CONFIG_NET_IPIP is not set
# CONFIG_NET_IPGRE is not set
CONFIG_IP_MROUTE=y
CONFIG_IP_PIMSM_V1=y
CONFIG_IP_PIMSM_V2=y
# CONFIG_ARPD is not set
CONFIG_SYN_COOKIES=y
CONFIG_INET_AH=m
CONFIG_INET_ESP=m
CONFIG_INET_IPCOMP=m
CONFIG_INET_XFRM_TUNNEL=m
CONFIG_INET_TUNNEL=m
CONFIG_INET_XFRM_MODE_TRANSPORT=m
CONFIG_INET_XFRM_MODE_TUNNEL=m
CONFIG_INET_XFRM_MODE_BEET=m
CONFIG_INET_LRO=y
# CONFIG_INET_DIAG is not set
CONFIG_TCP_CONG_ADVANCED=y
# CONFIG_TCP_CONG_BIC is not set
CONFIG_TCP_CONG_CUBIC=y
# CONFIG_TCP_CONG_WESTWOOD is not set
# CONFIG_TCP_CONG_HTCP is not set
# CONFIG_TCP_CONG_HSTCP is not set
# CONFIG_TCP_CONG_HYBLA is not set
# CONFIG_TCP_CONG_VEGAS is not set
# CONFIG_TCP_CONG_SCALABLE is not set
# CONFIG_TCP_CONG_LP is not set
# CONFIG_TCP_CONG_VENO is not set
# CONFIG_TCP_CONG_YEAH is not set
# CONFIG_TCP_CONG_ILLINOIS is not set
# CONFIG_DEFAULT_BIC is not set
CONFIG_DEFAULT_CUBIC=y
# CONFIG_DEFAULT_HTCP is not set
# CONFIG_DEFAULT_VEGAS is not set
# CONFIG_DEFAULT_WESTWOOD is not set
# CONFIG_DEFAULT_RENO is not set
CONFIG_DEFAULT_TCP_CONG="cubic"
CONFIG_TCP_MD5SIG=y
CONFIG_IPV6=y
CONFIG_IPV6_PRIVACY=y
CONFIG_IPV6_ROUTER_PREF=y
CONFIG_IPV6_ROUTE_INFO=y
CONFIG_IPV6_OPTIMISTIC_DAD=y
CONFIG_INET6_AH=m
CONFIG_INET6_ESP=m
CONFIG_INET6_IPCOMP=m
CONFIG_IPV6_MIP6=y
CONFIG_INET6_XFRM_TUNNEL=m
CONFIG_INET6_TUNNEL=m
CONFIG_INET6_XFRM_MODE_TRANSPORT=m
CONFIG_INET6_XFRM_MODE_TUNNEL=m
CONFIG_INET6_XFRM_MODE_BEET=m
CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION=m
# CONFIG_IPV6_SIT is not set
# CONFIG_IPV6_TUNNEL is not set
CONFIG_IPV6_MULTIPLE_TABLES=y
CONFIG_IPV6_SUBTREES=y
CONFIG_IPV6_MROUTE=y
CONFIG_IPV6_PIMSM_V2=y
# CONFIG_NETLABEL is not set
CONFIG_NETWORK_SECMARK=y
CONFIG_NETFILTER=y
# CONFIG_NETFILTER_DEBUG is not set
CONFIG_NETFILTER_ADVANCED=y

#
# Core Netfilter Configuration
#
# CONFIG_NETFILTER_NETLINK_QUEUE is not set
# CONFIG_NETFILTER_NETLINK_LOG is not set
# CONFIG_NF_CONNTRACK is not set
# CONFIG_NETFILTER_XTABLES is not set
# CONFIG_IP_VS is not set

#
# IP: Netfilter Configuration
#
# CONFIG_NF_DEFRAG_IPV4 is not set
# CONFIG_IP_NF_QUEUE is not set
# CONFIG_IP_NF_IPTABLES is not set
# CONFIG_IP_NF_ARPTABLES is not set

#
# IPv6: Netfilter Configuration
#
# CONFIG_IP6_NF_QUEUE is not set
# CONFIG_IP6_NF_IPTABLES is not set
# CONFIG_IP_DCCP is not set
CONFIG_IP_SCTP=m
# CONFIG_SCTP_DBG_MSG is not set
# CONFIG_SCTP_DBG_OBJCNT is not set
# CONFIG_SCTP_HMAC_NONE is not set
# CONFIG_SCTP_HMAC_SHA1 is not set
CONFIG_SCTP_HMAC_MD5=y
# CONFIG_RDS is not set
# CONFIG_TIPC is not set
# CONFIG_ATM is not set
# CONFIG_BRIDGE is not set
# CONFIG_NET_DSA is not set
# CONFIG_VLAN_8021Q is not set
# CONFIG_DECNET is not set
# CONFIG_LLC2 is not set
# CONFIG_IPX is not set
# CONFIG_ATALK is not set
# CONFIG_X25 is not set
# CONFIG_LAPB is not set
# CONFIG_ECONET is not set
# CONFIG_WAN_ROUTER is not set
# CONFIG_PHONET is not set
# CONFIG_IEEE802154 is not set
CONFIG_NET_SCHED=y

#
# Queueing/Scheduling
#
# CONFIG_NET_SCH_CBQ is not set
# CONFIG_NET_SCH_HTB is not set
# CONFIG_NET_SCH_HFSC is not set
# CONFIG_NET_SCH_PRIO is not set
# CONFIG_NET_SCH_MULTIQ is not set
# CONFIG_NET_SCH_RED is not set
# CONFIG_NET_SCH_SFQ is not set
# CONFIG_NET_SCH_TEQL is not set
# CONFIG_NET_SCH_TBF is not set
# CONFIG_NET_SCH_GRED is not set
# CONFIG_NET_SCH_DSMARK is not set
# CONFIG_NET_SCH_NETEM is not set
# CONFIG_NET_SCH_DRR is not set
# CONFIG_NET_SCH_INGRESS is not set

#
# Classification
#
CONFIG_NET_CLS=y
# CONFIG_NET_CLS_BASIC is not set
# CONFIG_NET_CLS_TCINDEX is not set
# CONFIG_NET_CLS_ROUTE4 is not set
# CONFIG_NET_CLS_FW is not set
# CONFIG_NET_CLS_U32 is not set
# CONFIG_NET_CLS_RSVP is not set
# CONFIG_NET_CLS_RSVP6 is not set
# CONFIG_NET_CLS_FLOW is not set
CONFIG_NET_CLS_CGROUP=y
CONFIG_NET_EMATCH=y
CONFIG_NET_EMATCH_STACK=32
# CONFIG_NET_EMATCH_CMP is not set
# CONFIG_NET_EMATCH_NBYTE is not set
# CONFIG_NET_EMATCH_U32 is not set
# CONFIG_NET_EMATCH_META is not set
# CONFIG_NET_EMATCH_TEXT is not set
CONFIG_NET_CLS_ACT=y
# CONFIG_NET_ACT_POLICE is not set
# CONFIG_NET_ACT_GACT is not set
# CONFIG_NET_ACT_MIRRED is not set
# CONFIG_NET_ACT_NAT is not set
# CONFIG_NET_ACT_PEDIT is not set
# CONFIG_NET_ACT_SIMP is not set
# CONFIG_NET_ACT_SKBEDIT is not set
CONFIG_NET_SCH_FIFO=y
CONFIG_DCB=y

#
# Network testing
#
# CONFIG_NET_PKTGEN is not set
# CONFIG_NET_DROP_MONITOR is not set
# CONFIG_HAMRADIO is not set
# CONFIG_CAN is not set
# CONFIG_IRDA is not set
# CONFIG_BT is not set
CONFIG_AF_RXRPC=m
# CONFIG_AF_RXRPC_DEBUG is not set
CONFIG_RXKAD=m
CONFIG_FIB_RULES=y
CONFIG_WIRELESS=y
CONFIG_WEXT_CORE=y
CONFIG_WEXT_PROC=y
CONFIG_CFG80211=m
# CONFIG_NL80211_TESTMODE is not set
# CONFIG_CFG80211_DEVELOPER_WARNINGS is not set
# CONFIG_CFG80211_REG_DEBUG is not set
CONFIG_CFG80211_DEFAULT_PS=y
# CONFIG_CFG80211_DEBUGFS is not set
CONFIG_WIRELESS_OLD_REGULATORY=y
CONFIG_CFG80211_WEXT=y
# CONFIG_WIRELESS_EXT_SYSFS is not set
CONFIG_LIB80211=m
# CONFIG_LIB80211_DEBUG is not set
CONFIG_MAC80211=m
CONFIG_MAC80211_RC_MINSTREL=y
# CONFIG_MAC80211_RC_DEFAULT_PID is not set
CONFIG_MAC80211_RC_DEFAULT_MINSTREL=y
CONFIG_MAC80211_RC_DEFAULT="minstrel"
# CONFIG_MAC80211_MESH is not set
CONFIG_MAC80211_LEDS=y
# CONFIG_MAC80211_DEBUGFS is not set
# CONFIG_MAC80211_DEBUG_MENU is not set
# CONFIG_WIMAX is not set
CONFIG_RFKILL=m
CONFIG_RFKILL_LEDS=y
CONFIG_RFKILL_INPUT=y
# CONFIG_NET_9P is not set

#
# Device Drivers
#

#
# Generic Driver Options
#
CONFIG_UEVENT_HELPER_PATH=""
# CONFIG_DEVTMPFS is not set
CONFIG_STANDALONE=y
CONFIG_PREVENT_FIRMWARE_BUILD=y
CONFIG_FW_LOADER=y
# CONFIG_FIRMWARE_IN_KERNEL is not set
CONFIG_EXTRA_FIRMWARE=""
# CONFIG_DEBUG_DRIVER is not set
# CONFIG_DEBUG_DEVRES is not set
# CONFIG_SYS_HYPERVISOR is not set
CONFIG_CONNECTOR=m
# CONFIG_MTD is not set
# CONFIG_PARPORT is not set
CONFIG_PNP=y
# CONFIG_PNP_DEBUG_MESSAGES is not set

#
# Protocols
#
CONFIG_ISAPNP=y
CONFIG_PNPBIOS=y
CONFIG_PNPBIOS_PROC_FS=y
CONFIG_PNPACPI=y
CONFIG_BLK_DEV=y
# CONFIG_BLK_DEV_FD is not set
# CONFIG_BLK_DEV_XD is not set
# CONFIG_BLK_CPQ_DA is not set
# CONFIG_BLK_CPQ_CISS_DA is not set
# CONFIG_BLK_DEV_DAC960 is not set
# CONFIG_BLK_DEV_UMEM is not set
# CONFIG_BLK_DEV_COW_COMMON is not set
CONFIG_BLK_DEV_LOOP=m
CONFIG_BLK_DEV_CRYPTOLOOP=m
# CONFIG_BLK_DEV_DRBD is not set
# CONFIG_BLK_DEV_NBD is not set
# CONFIG_BLK_DEV_SX8 is not set
# CONFIG_BLK_DEV_UB is not set
# CONFIG_BLK_DEV_RAM is not set
# CONFIG_CDROM_PKTCDVD is not set
# CONFIG_ATA_OVER_ETH is not set
# CONFIG_BLK_DEV_HD is not set
# CONFIG_MISC_DEVICES is not set
CONFIG_HAVE_IDE=y
# CONFIG_IDE is not set

#
# SCSI device support
#
# CONFIG_RAID_ATTRS is not set
CONFIG_SCSI=y
CONFIG_SCSI_DMA=y
# CONFIG_SCSI_TGT is not set
CONFIG_SCSI_NETLINK=y
# CONFIG_SCSI_PROC_FS is not set

#
# SCSI support type (disk, tape, CD-ROM)
#
CONFIG_BLK_DEV_SD=m
# CONFIG_CHR_DEV_ST is not set
# CONFIG_CHR_DEV_OSST is not set
# CONFIG_BLK_DEV_SR is not set
# CONFIG_CHR_DEV_SG is not set
# CONFIG_CHR_DEV_SCH is not set
CONFIG_SCSI_MULTI_LUN=y
CONFIG_SCSI_CONSTANTS=y
CONFIG_SCSI_LOGGING=y
CONFIG_SCSI_SCAN_ASYNC=y
CONFIG_SCSI_WAIT_SCAN=m

#
# SCSI Transports
#
# CONFIG_SCSI_SPI_ATTRS is not set
CONFIG_SCSI_FC_ATTRS=m
CONFIG_SCSI_ISCSI_ATTRS=m
# CONFIG_SCSI_SAS_ATTRS is not set
# CONFIG_SCSI_SAS_LIBSAS is not set
# CONFIG_SCSI_SRP_ATTRS is not set
# CONFIG_SCSI_LOWLEVEL is not set
# CONFIG_SCSI_DH is not set
# CONFIG_SCSI_OSD_INITIATOR is not set
CONFIG_ATA=y
# CONFIG_ATA_NONSTANDARD is not set
CONFIG_ATA_VERBOSE_ERROR=y
CONFIG_ATA_ACPI=y
CONFIG_SATA_PMP=y
# CONFIG_SATA_AHCI is not set
# CONFIG_SATA_SIL24 is not set
CONFIG_ATA_SFF=y
# CONFIG_SATA_SVW is not set
CONFIG_ATA_PIIX=m
# CONFIG_SATA_MV is not set
# CONFIG_SATA_NV is not set
# CONFIG_PDC_ADMA is not set
# CONFIG_SATA_QSTOR is not set
# CONFIG_SATA_PROMISE is not set
# CONFIG_SATA_SX4 is not set
# CONFIG_SATA_SIL is not set
# CONFIG_SATA_SIS is not set
# CONFIG_SATA_ULI is not set
# CONFIG_SATA_VIA is not set
# CONFIG_SATA_VITESSE is not set
# CONFIG_SATA_INIC162X is not set
# CONFIG_PATA_ACPI is not set
# CONFIG_PATA_ALI is not set
# CONFIG_PATA_AMD is not set
# CONFIG_PATA_ARTOP is not set
# CONFIG_PATA_ATP867X is not set
# CONFIG_PATA_ATIIXP is not set
# CONFIG_PATA_CMD640_PCI is not set
# CONFIG_PATA_CMD64X is not set
# CONFIG_PATA_CS5520 is not set
# CONFIG_PATA_CS5530 is not set
# CONFIG_PATA_CS5535 is not set
# CONFIG_PATA_CS5536 is not set
# CONFIG_PATA_CYPRESS is not set
# CONFIG_PATA_EFAR is not set
# CONFIG_ATA_GENERIC is not set
# CONFIG_PATA_HPT366 is not set
# CONFIG_PATA_HPT37X is not set
# CONFIG_PATA_HPT3X2N is not set
# CONFIG_PATA_HPT3X3 is not set
# CONFIG_PATA_ISAPNP is not set
# CONFIG_PATA_IT821X is not set
# CONFIG_PATA_IT8213 is not set
# CONFIG_PATA_JMICRON is not set
# CONFIG_PATA_LEGACY is not set
# CONFIG_PATA_TRIFLEX is not set
# CONFIG_PATA_MARVELL is not set
# CONFIG_PATA_MPIIX is not set
# CONFIG_PATA_OLDPIIX is not set
# CONFIG_PATA_NETCELL is not set
# CONFIG_PATA_NINJA32 is not set
# CONFIG_PATA_NS87410 is not set
# CONFIG_PATA_NS87415 is not set
# CONFIG_PATA_OPTI is not set
# CONFIG_PATA_OPTIDMA is not set
# CONFIG_PATA_PDC2027X is not set
# CONFIG_PATA_PDC_OLD is not set
# CONFIG_PATA_QDI is not set
# CONFIG_PATA_RADISYS is not set
# CONFIG_PATA_RDC is not set
# CONFIG_PATA_RZ1000 is not set
# CONFIG_PATA_SC1200 is not set
# CONFIG_PATA_SERVERWORKS is not set
# CONFIG_PATA_SIL680 is not set
# CONFIG_PATA_SIS is not set
# CONFIG_PATA_TOSHIBA is not set
# CONFIG_PATA_VIA is not set
# CONFIG_PATA_WINBOND is not set
# CONFIG_PATA_WINBOND_VLB is not set
# CONFIG_PATA_SCH is not set
# CONFIG_MD is not set
# CONFIG_FUSION is not set

#
# IEEE 1394 (FireWire) support
#

#
# You can enable one or both FireWire driver stacks.
#

#
# The newer stack is recommended.
#
# CONFIG_FIREWIRE is not set
# CONFIG_IEEE1394 is not set
# CONFIG_I2O is not set
# CONFIG_MACINTOSH_DRIVERS is not set
CONFIG_NETDEVICES=y
# CONFIG_IFB is not set
# CONFIG_DUMMY is not set
# CONFIG_BONDING is not set
# CONFIG_MACVLAN is not set
# CONFIG_EQUALIZER is not set
# CONFIG_TUN is not set
# CONFIG_VETH is not set
# CONFIG_NET_SB1000 is not set
# CONFIG_ARCNET is not set
# CONFIG_PHYLIB is not set
CONFIG_NET_ETHERNET=y
CONFIG_MII=m
# CONFIG_HAPPYMEAL is not set
# CONFIG_SUNGEM is not set
# CONFIG_CASSINI is not set
# CONFIG_NET_VENDOR_3COM is not set
# CONFIG_LANCE is not set
# CONFIG_NET_VENDOR_SMC is not set
# CONFIG_ENC28J60 is not set
# CONFIG_ETHOC is not set
# CONFIG_NET_VENDOR_RACAL is not set
# CONFIG_DNET is not set
# CONFIG_NET_TULIP is not set
# CONFIG_AT1700 is not set
# CONFIG_DEPCA is not set
# CONFIG_HP100 is not set
# CONFIG_NET_ISA is not set
# CONFIG_IBM_NEW_EMAC_ZMII is not set
# CONFIG_IBM_NEW_EMAC_RGMII is not set
# CONFIG_IBM_NEW_EMAC_TAH is not set
# CONFIG_IBM_NEW_EMAC_EMAC4 is not set
# CONFIG_IBM_NEW_EMAC_NO_FLOW_CTRL is not set
# CONFIG_IBM_NEW_EMAC_MAL_CLR_ICINTSTAT is not set
# CONFIG_IBM_NEW_EMAC_MAL_COMMON_ERR is not set
# CONFIG_NET_PCI is not set
# CONFIG_B44 is not set
# CONFIG_CS89x0 is not set
# CONFIG_KS8842 is not set
# CONFIG_KS8851 is not set
# CONFIG_KS8851_MLL is not set
CONFIG_ATL2=m
# CONFIG_NETDEV_1000 is not set
# CONFIG_NETDEV_10000 is not set
# CONFIG_TR is not set
CONFIG_WLAN=y
# CONFIG_LIBERTAS_THINFIRM is not set
# CONFIG_AIRO is not set
# CONFIG_ATMEL is not set
# CONFIG_AT76C50X_USB is not set
# CONFIG_PRISM54 is not set
# CONFIG_USB_ZD1201 is not set
# CONFIG_USB_NET_RNDIS_WLAN is not set
# CONFIG_RTL8180 is not set
# CONFIG_RTL8187 is not set
# CONFIG_ADM8211 is not set
# CONFIG_MAC80211_HWSIM is not set
# CONFIG_MWL8K is not set
CONFIG_ATH_COMMON=m
# CONFIG_ATH_DEBUG is not set
CONFIG_ATH5K=m
# CONFIG_ATH5K_DEBUG is not set
# CONFIG_ATH9K is not set
# CONFIG_AR9170_USB is not set
# CONFIG_B43 is not set
# CONFIG_B43LEGACY is not set
# CONFIG_HOSTAP is not set
# CONFIG_IPW2100 is not set
# CONFIG_IPW2200 is not set
# CONFIG_IWLWIFI is not set
# CONFIG_LIBERTAS is not set
# CONFIG_HERMES is not set
# CONFIG_P54_COMMON is not set
# CONFIG_RT2X00 is not set
# CONFIG_WL12XX is not set
# CONFIG_ZD1211RW is not set

#
# Enable WiMAX (Networking options) to see the WiMAX drivers
#

#
# USB Network Adapters
#
# CONFIG_USB_CATC is not set
# CONFIG_USB_KAWETH is not set
# CONFIG_USB_PEGASUS is not set
# CONFIG_USB_RTL8150 is not set
# CONFIG_USB_USBNET is not set
# CONFIG_USB_HSO is not set
# CONFIG_WAN is not set
CONFIG_FDDI=y
# CONFIG_DEFXX is not set
# CONFIG_SKFP is not set
CONFIG_HIPPI=y
# CONFIG_ROADRUNNER is not set
CONFIG_PPP=m
CONFIG_PPP_MULTILINK=y
CONFIG_PPP_FILTER=y
# CONFIG_PPP_ASYNC is not set
# CONFIG_PPP_SYNC_TTY is not set
# CONFIG_PPP_DEFLATE is not set
# CONFIG_PPP_BSDCOMP is not set
CONFIG_PPP_MPPE=m
# CONFIG_PPPOE is not set
# CONFIG_PPPOL2TP is not set
# CONFIG_SLIP is not set
CONFIG_SLHC=m
CONFIG_NET_FC=y
# CONFIG_NETCONSOLE is not set
# CONFIG_NETPOLL is not set
# CONFIG_NET_POLL_CONTROLLER is not set
# CONFIG_VMXNET3 is not set
# CONFIG_ISDN is not set
# CONFIG_PHONE is not set

#
# Input device support
#
CONFIG_INPUT=y
# CONFIG_INPUT_FF_MEMLESS is not set
# CONFIG_INPUT_POLLDEV is not set
CONFIG_INPUT_SPARSEKMAP=m

#
# Userland interfaces
#
CONFIG_INPUT_MOUSEDEV=y
CONFIG_INPUT_MOUSEDEV_PSAUX=y
CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
CONFIG_INPUT_JOYDEV=m
CONFIG_INPUT_EVDEV=m
# CONFIG_INPUT_EVBUG is not set

#
# Input Device Drivers
#
CONFIG_INPUT_KEYBOARD=y
# CONFIG_KEYBOARD_ADP5588 is not set
CONFIG_KEYBOARD_ATKBD=y
# CONFIG_QT2160 is not set
# CONFIG_KEYBOARD_LKKBD is not set
# CONFIG_KEYBOARD_LM8323 is not set
# CONFIG_KEYBOARD_MAX7359 is not set
# CONFIG_KEYBOARD_NEWTON is not set
# CONFIG_KEYBOARD_OPENCORES is not set
# CONFIG_KEYBOARD_STOWAWAY is not set
# CONFIG_KEYBOARD_SUNKBD is not set
# CONFIG_KEYBOARD_XTKBD is not set
CONFIG_INPUT_MOUSE=y
CONFIG_MOUSE_PS2=m
CONFIG_MOUSE_PS2_ALPS=y
CONFIG_MOUSE_PS2_LOGIPS2PP=y
CONFIG_MOUSE_PS2_SYNAPTICS=y
CONFIG_MOUSE_PS2_LIFEBOOK=y
CONFIG_MOUSE_PS2_TRACKPOINT=y
# CONFIG_MOUSE_PS2_ELANTECH is not set
# CONFIG_MOUSE_PS2_SENTELIC is not set
# CONFIG_MOUSE_PS2_TOUCHKIT is not set
# CONFIG_MOUSE_SERIAL is not set
# CONFIG_MOUSE_APPLETOUCH is not set
# CONFIG_MOUSE_BCM5974 is not set
# CONFIG_MOUSE_INPORT is not set
# CONFIG_MOUSE_LOGIBM is not set
# CONFIG_MOUSE_PC110PAD is not set
# CONFIG_MOUSE_VSXXXAA is not set
# CONFIG_MOUSE_SYNAPTICS_I2C is not set
CONFIG_INPUT_JOYSTICK=y
# CONFIG_JOYSTICK_ANALOG is not set
# CONFIG_JOYSTICK_A3D is not set
# CONFIG_JOYSTICK_ADI is not set
# CONFIG_JOYSTICK_COBRA is not set
# CONFIG_JOYSTICK_GF2K is not set
# CONFIG_JOYSTICK_GRIP is not set
# CONFIG_JOYSTICK_GRIP_MP is not set
# CONFIG_JOYSTICK_GUILLEMOT is not set
# CONFIG_JOYSTICK_INTERACT is not set
# CONFIG_JOYSTICK_SIDEWINDER is not set
# CONFIG_JOYSTICK_TMDC is not set
# CONFIG_JOYSTICK_IFORCE is not set
# CONFIG_JOYSTICK_WARRIOR is not set
# CONFIG_JOYSTICK_MAGELLAN is not set
# CONFIG_JOYSTICK_SPACEORB is not set
# CONFIG_JOYSTICK_SPACEBALL is not set
# CONFIG_JOYSTICK_STINGER is not set
# CONFIG_JOYSTICK_TWIDJOY is not set
# CONFIG_JOYSTICK_ZHENHUA is not set
# CONFIG_JOYSTICK_JOYDUMP is not set
# CONFIG_JOYSTICK_XPAD is not set
CONFIG_INPUT_TABLET=y
# CONFIG_TABLET_USB_ACECAD is not set
# CONFIG_TABLET_USB_AIPTEK is not set
# CONFIG_TABLET_USB_GTCO is not set
# CONFIG_TABLET_USB_KBTAB is not set
# CONFIG_TABLET_USB_WACOM is not set
CONFIG_INPUT_TOUCHSCREEN=y
# CONFIG_TOUCHSCREEN_ADS7846 is not set
# CONFIG_TOUCHSCREEN_AD7877 is not set
# CONFIG_TOUCHSCREEN_AD7879_I2C is not set
# CONFIG_TOUCHSCREEN_AD7879_SPI is not set
# CONFIG_TOUCHSCREEN_AD7879 is not set
# CONFIG_TOUCHSCREEN_DYNAPRO is not set
# CONFIG_TOUCHSCREEN_EETI is not set
# CONFIG_TOUCHSCREEN_FUJITSU is not set
# CONFIG_TOUCHSCREEN_GUNZE is not set
# CONFIG_TOUCHSCREEN_ELO is not set
# CONFIG_TOUCHSCREEN_WACOM_W8001 is not set
# CONFIG_TOUCHSCREEN_MCS5000 is not set
# CONFIG_TOUCHSCREEN_MTOUCH is not set
# CONFIG_TOUCHSCREEN_INEXIO is not set
# CONFIG_TOUCHSCREEN_MK712 is not set
# CONFIG_TOUCHSCREEN_HTCPEN is not set
# CONFIG_TOUCHSCREEN_PENMOUNT is not set
# CONFIG_TOUCHSCREEN_TOUCHRIGHT is not set
# CONFIG_TOUCHSCREEN_TOUCHWIN is not set
# CONFIG_TOUCHSCREEN_WM97XX is not set
# CONFIG_TOUCHSCREEN_USB_COMPOSITE is not set
# CONFIG_TOUCHSCREEN_TOUCHIT213 is not set
# CONFIG_TOUCHSCREEN_TSC2007 is not set
CONFIG_INPUT_MISC=y
CONFIG_INPUT_PCSPKR=m
# CONFIG_INPUT_APANEL is not set
# CONFIG_INPUT_WISTRON_BTNS is not set
# CONFIG_INPUT_ATLAS_BTNS is not set
# CONFIG_INPUT_ATI_REMOTE is not set
# CONFIG_INPUT_ATI_REMOTE2 is not set
# CONFIG_INPUT_KEYSPAN_REMOTE is not set
# CONFIG_INPUT_POWERMATE is not set
# CONFIG_INPUT_YEALINK is not set
# CONFIG_INPUT_CM109 is not set
# CONFIG_INPUT_UINPUT is not set
# CONFIG_INPUT_WINBOND_CIR is not set

#
# Hardware I/O ports
#
CONFIG_SERIO=y
CONFIG_SERIO_I8042=y
# CONFIG_SERIO_SERPORT is not set
# CONFIG_SERIO_CT82C710 is not set
# CONFIG_SERIO_PCIPS2 is not set
CONFIG_SERIO_LIBPS2=y
CONFIG_SERIO_RAW=m
# CONFIG_SERIO_ALTERA_PS2 is not set
# CONFIG_GAMEPORT is not set

#
# Character devices
#
CONFIG_VT=y
CONFIG_CONSOLE_TRANSLATIONS=y
CONFIG_VT_CONSOLE=y
CONFIG_HW_CONSOLE=y
# CONFIG_VT_HW_CONSOLE_BINDING is not set
# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_NONSTANDARD=y
# CONFIG_COMPUTONE is not set
# CONFIG_ROCKETPORT is not set
# CONFIG_CYCLADES is not set
# CONFIG_DIGIEPCA is not set
# CONFIG_MOXA_INTELLIO is not set
# CONFIG_MOXA_SMARTIO is not set
# CONFIG_ISI is not set
# CONFIG_SYNCLINK is not set
# CONFIG_SYNCLINKMP is not set
# CONFIG_SYNCLINK_GT is not set
# CONFIG_N_HDLC is not set
# CONFIG_RISCOM8 is not set
# CONFIG_SPECIALIX is not set
CONFIG_STALDRV=y
# CONFIG_STALLION is not set
# CONFIG_ISTALLION is not set
# CONFIG_NOZOMI is not set

#
# Serial drivers
#
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_FIX_EARLYCON_MEM=y
CONFIG_SERIAL_8250_PCI=y
CONFIG_SERIAL_8250_PNP=y
CONFIG_SERIAL_8250_NR_UARTS=32
CONFIG_SERIAL_8250_RUNTIME_UARTS=4
CONFIG_SERIAL_8250_EXTENDED=y
CONFIG_SERIAL_8250_MANY_PORTS=y
# CONFIG_SERIAL_8250_FOURPORT is not set
# CONFIG_SERIAL_8250_ACCENT is not set
# CONFIG_SERIAL_8250_BOCA is not set
# CONFIG_SERIAL_8250_EXAR_ST16C554 is not set
# CONFIG_SERIAL_8250_HUB6 is not set
CONFIG_SERIAL_8250_SHARE_IRQ=y
# CONFIG_SERIAL_8250_DETECT_IRQ is not set
CONFIG_SERIAL_8250_RSA=y

#
# Non-8250 serial port support
#
# CONFIG_SERIAL_MAX3100 is not set
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
# CONFIG_SERIAL_JSM is not set
CONFIG_UNIX98_PTYS=y
CONFIG_DEVPTS_MULTIPLE_INSTANCES=y
# CONFIG_LEGACY_PTYS is not set
# CONFIG_IPMI_HANDLER is not set
# CONFIG_HW_RANDOM is not set
CONFIG_NVRAM=m
# CONFIG_DTLK is not set
# CONFIG_R3964 is not set
# CONFIG_APPLICOM is not set
# CONFIG_SONYPI is not set
# CONFIG_MWAVE is not set
# CONFIG_PC8736x_GPIO is not set
# CONFIG_NSC_GPIO is not set
# CONFIG_CS5535_GPIO is not set
# CONFIG_RAW_DRIVER is not set
CONFIG_HPET=y
CONFIG_HPET_MMAP=y
# CONFIG_HANGCHECK_TIMER is not set
# CONFIG_TCG_TPM is not set
# CONFIG_TELCLOCK is not set
CONFIG_DEVPORT=y
CONFIG_I2C=m
CONFIG_I2C_BOARDINFO=y
CONFIG_I2C_COMPAT=y
# CONFIG_I2C_CHARDEV is not set
CONFIG_I2C_HELPER_AUTO=y
CONFIG_I2C_ALGOBIT=m

#
# I2C Hardware Bus support
#

#
# PC SMBus host controller drivers
#
# CONFIG_I2C_ALI1535 is not set
# CONFIG_I2C_ALI1563 is not set
# CONFIG_I2C_ALI15X3 is not set
# CONFIG_I2C_AMD756 is not set
# CONFIG_I2C_AMD8111 is not set
CONFIG_I2C_I801=m
# CONFIG_I2C_ISCH is not set
# CONFIG_I2C_PIIX4 is not set
# CONFIG_I2C_NFORCE2 is not set
# CONFIG_I2C_SIS5595 is not set
# CONFIG_I2C_SIS630 is not set
# CONFIG_I2C_SIS96X is not set
# CONFIG_I2C_VIA is not set
# CONFIG_I2C_VIAPRO is not set

#
# ACPI drivers
#
# CONFIG_I2C_SCMI is not set

#
# I2C system bus drivers (mostly embedded / system-on-chip)
#
# CONFIG_I2C_OCORES is not set
# CONFIG_I2C_SIMTEC is not set

#
# External I2C/SMBus adapter drivers
#
# CONFIG_I2C_PARPORT_LIGHT is not set
# CONFIG_I2C_TAOS_EVM is not set
# CONFIG_I2C_TINY_USB is not set

#
# Other I2C/SMBus bus drivers
#
# CONFIG_I2C_PCA_ISA is not set
# CONFIG_I2C_PCA_PLATFORM is not set
# CONFIG_I2C_STUB is not set
# CONFIG_SCx200_ACB is not set

#
# Miscellaneous I2C Chip support
#
# CONFIG_SENSORS_TSL2550 is not set
# CONFIG_I2C_DEBUG_CORE is not set
# CONFIG_I2C_DEBUG_ALGO is not set
# CONFIG_I2C_DEBUG_BUS is not set
# CONFIG_I2C_DEBUG_CHIP is not set
CONFIG_SPI=y
# CONFIG_SPI_DEBUG is not set
CONFIG_SPI_MASTER=y

#
# SPI Master Controller Drivers
#
# CONFIG_SPI_BITBANG is not set
# CONFIG_SPI_XILINX is not set
# CONFIG_SPI_DESIGNWARE is not set

#
# SPI Protocol Masters
#
# CONFIG_SPI_SPIDEV is not set
# CONFIG_SPI_TLE62X0 is not set

#
# PPS support
#
# CONFIG_PPS is not set
CONFIG_ARCH_WANT_OPTIONAL_GPIOLIB=y
# CONFIG_GPIOLIB is not set
# CONFIG_W1 is not set
CONFIG_POWER_SUPPLY=y
# CONFIG_POWER_SUPPLY_DEBUG is not set
# CONFIG_PDA_POWER is not set
# CONFIG_BATTERY_DS2760 is not set
# CONFIG_BATTERY_DS2782 is not set
# CONFIG_BATTERY_BQ27x00 is not set
# CONFIG_BATTERY_MAX17040 is not set
CONFIG_HWMON=y
# CONFIG_HWMON_VID is not set
# CONFIG_HWMON_DEBUG_CHIP is not set

#
# Native drivers
#
# CONFIG_SENSORS_ABITUGURU is not set
# CONFIG_SENSORS_ABITUGURU3 is not set
# CONFIG_SENSORS_AD7414 is not set
# CONFIG_SENSORS_AD7418 is not set
# CONFIG_SENSORS_ADCXX is not set
# CONFIG_SENSORS_ADM1021 is not set
# CONFIG_SENSORS_ADM1025 is not set
# CONFIG_SENSORS_ADM1026 is not set
# CONFIG_SENSORS_ADM1029 is not set
# CONFIG_SENSORS_ADM1031 is not set
# CONFIG_SENSORS_ADM9240 is not set
# CONFIG_SENSORS_ADT7462 is not set
# CONFIG_SENSORS_ADT7470 is not set
# CONFIG_SENSORS_ADT7473 is not set
# CONFIG_SENSORS_ADT7475 is not set
# CONFIG_SENSORS_K8TEMP is not set
# CONFIG_SENSORS_K10TEMP is not set
# CONFIG_SENSORS_ASB100 is not set
# CONFIG_SENSORS_ATXP1 is not set
# CONFIG_SENSORS_DS1621 is not set
# CONFIG_SENSORS_I5K_AMB is not set
# CONFIG_SENSORS_F71805F is not set
# CONFIG_SENSORS_F71882FG is not set
# CONFIG_SENSORS_F75375S is not set
# CONFIG_SENSORS_FSCHMD is not set
# CONFIG_SENSORS_G760A is not set
# CONFIG_SENSORS_GL518SM is not set
# CONFIG_SENSORS_GL520SM is not set
# CONFIG_SENSORS_CORETEMP is not set
# CONFIG_SENSORS_IT87 is not set
# CONFIG_SENSORS_LM63 is not set
# CONFIG_SENSORS_LM70 is not set
# CONFIG_SENSORS_LM73 is not set
# CONFIG_SENSORS_LM75 is not set
# CONFIG_SENSORS_LM77 is not set
# CONFIG_SENSORS_LM78 is not set
# CONFIG_SENSORS_LM80 is not set
# CONFIG_SENSORS_LM83 is not set
# CONFIG_SENSORS_LM85 is not set
# CONFIG_SENSORS_LM87 is not set
# CONFIG_SENSORS_LM90 is not set
# CONFIG_SENSORS_LM92 is not set
# CONFIG_SENSORS_LM93 is not set
# CONFIG_SENSORS_LTC4215 is not set
# CONFIG_SENSORS_LTC4245 is not set
# CONFIG_SENSORS_LM95241 is not set
# CONFIG_SENSORS_MAX1111 is not set
# CONFIG_SENSORS_MAX1619 is not set
# CONFIG_SENSORS_MAX6650 is not set
# CONFIG_SENSORS_PC87360 is not set
# CONFIG_SENSORS_PC87427 is not set
# CONFIG_SENSORS_PCF8591 is not set
# CONFIG_SENSORS_SIS5595 is not set
# CONFIG_SENSORS_DME1737 is not set
# CONFIG_SENSORS_SMSC47M1 is not set
# CONFIG_SENSORS_SMSC47M192 is not set
# CONFIG_SENSORS_SMSC47B397 is not set
# CONFIG_SENSORS_ADS7828 is not set
# CONFIG_SENSORS_AMC6821 is not set
# CONFIG_SENSORS_THMC50 is not set
# CONFIG_SENSORS_TMP401 is not set
# CONFIG_SENSORS_TMP421 is not set
# CONFIG_SENSORS_VIA_CPUTEMP is not set
# CONFIG_SENSORS_VIA686A is not set
# CONFIG_SENSORS_VT1211 is not set
# CONFIG_SENSORS_VT8231 is not set
# CONFIG_SENSORS_W83781D is not set
# CONFIG_SENSORS_W83791D is not set
# CONFIG_SENSORS_W83792D is not set
# CONFIG_SENSORS_W83793 is not set
# CONFIG_SENSORS_W83L785TS is not set
# CONFIG_SENSORS_W83L786NG is not set
# CONFIG_SENSORS_W83627HF is not set
# CONFIG_SENSORS_W83627EHF is not set
# CONFIG_SENSORS_HDAPS is not set
# CONFIG_SENSORS_LIS3_I2C is not set
# CONFIG_SENSORS_APPLESMC is not set

#
# ACPI drivers
#
# CONFIG_SENSORS_ATK0110 is not set
# CONFIG_SENSORS_LIS3LV02D is not set
CONFIG_THERMAL=m
CONFIG_THERMAL_HWMON=y
CONFIG_WATCHDOG=y
# CONFIG_WATCHDOG_NOWAYOUT is not set

#
# Watchdog Device Drivers
#
# CONFIG_SOFT_WATCHDOG is not set
# CONFIG_ACQUIRE_WDT is not set
# CONFIG_ADVANTECH_WDT is not set
# CONFIG_ALIM1535_WDT is not set
# CONFIG_ALIM7101_WDT is not set
# CONFIG_SC520_WDT is not set
# CONFIG_SBC_FITPC2_WATCHDOG is not set
# CONFIG_EUROTECH_WDT is not set
# CONFIG_IB700_WDT is not set
# CONFIG_IBMASR is not set
# CONFIG_WAFER_WDT is not set
# CONFIG_I6300ESB_WDT is not set
# CONFIG_ITCO_WDT is not set
# CONFIG_IT8712F_WDT is not set
# CONFIG_IT87_WDT is not set
# CONFIG_HP_WATCHDOG is not set
# CONFIG_SC1200_WDT is not set
# CONFIG_PC87413_WDT is not set
# CONFIG_60XX_WDT is not set
# CONFIG_SBC8360_WDT is not set
# CONFIG_SBC7240_WDT is not set
# CONFIG_CPU5_WDT is not set
# CONFIG_SMSC_SCH311X_WDT is not set
# CONFIG_SMSC37B787_WDT is not set
# CONFIG_W83627HF_WDT is not set
# CONFIG_W83697HF_WDT is not set
# CONFIG_W83697UG_WDT is not set
# CONFIG_W83877F_WDT is not set
# CONFIG_W83977F_WDT is not set
# CONFIG_MACHZ_WDT is not set
# CONFIG_SBC_EPX_C3_WATCHDOG is not set

#
# ISA-based Watchdog Cards
#
# CONFIG_PCWATCHDOG is not set
# CONFIG_MIXCOMWD is not set
# CONFIG_WDT is not set

#
# PCI-based Watchdog Cards
#
# CONFIG_PCIPCWATCHDOG is not set
# CONFIG_WDTPCI is not set

#
# USB-based Watchdog Cards
#
# CONFIG_USBPCWATCHDOG is not set
CONFIG_SSB_POSSIBLE=y

#
# Sonics Silicon Backplane
#
# CONFIG_SSB is not set

#
# Multifunction device drivers
#
# CONFIG_MFD_CORE is not set
# CONFIG_MFD_SM501 is not set
# CONFIG_HTC_PASIC3 is not set
# CONFIG_MFD_TMIO is not set
# CONFIG_MFD_WM8400 is not set
# CONFIG_MFD_WM8350_I2C is not set
# CONFIG_MFD_PCF50633 is not set
# CONFIG_MFD_MC13783 is not set
# CONFIG_AB3100_CORE is not set
# CONFIG_EZX_PCAP is not set
# CONFIG_AB4500_CORE is not set
# CONFIG_REGULATOR is not set
CONFIG_MEDIA_SUPPORT=m

#
# Multimedia core support
#
CONFIG_VIDEO_DEV=m
CONFIG_VIDEO_V4L2_COMMON=m
CONFIG_VIDEO_ALLOW_V4L1=y
CONFIG_VIDEO_V4L1_COMPAT=y
CONFIG_DVB_CORE=m
CONFIG_VIDEO_MEDIA=m

#
# Multimedia drivers
#
CONFIG_IR_CORE=m
CONFIG_VIDEO_IR=m
CONFIG_MEDIA_ATTACH=y
CONFIG_MEDIA_TUNER=m
# CONFIG_MEDIA_TUNER_CUSTOMISE is not set
CONFIG_MEDIA_TUNER_SIMPLE=m
CONFIG_MEDIA_TUNER_TDA8290=m
CONFIG_MEDIA_TUNER_TDA18271=m
CONFIG_MEDIA_TUNER_TDA9887=m
CONFIG_MEDIA_TUNER_TEA5761=m
CONFIG_MEDIA_TUNER_TEA5767=m
CONFIG_MEDIA_TUNER_MT20XX=m
CONFIG_MEDIA_TUNER_MT2131=m
CONFIG_MEDIA_TUNER_XC2028=m
CONFIG_MEDIA_TUNER_XC5000=m
CONFIG_MEDIA_TUNER_MXL5005S=m
CONFIG_MEDIA_TUNER_MXL5007T=m
CONFIG_MEDIA_TUNER_MC44S803=m
CONFIG_VIDEO_V4L2=m
CONFIG_VIDEO_V4L1=m
CONFIG_VIDEOBUF_GEN=m
CONFIG_VIDEOBUF_DMA_SG=m
CONFIG_VIDEOBUF_VMALLOC=m
CONFIG_VIDEOBUF_DVB=m
CONFIG_VIDEO_BTCX=m
CONFIG_VIDEO_TVEEPROM=m
CONFIG_VIDEO_TUNER=m
CONFIG_VIDEO_CAPTURE_DRIVERS=y
# CONFIG_VIDEO_ADV_DEBUG is not set
# CONFIG_VIDEO_FIXED_MINOR_RANGES is not set
CONFIG_VIDEO_HELPER_CHIPS_AUTO=y
CONFIG_VIDEO_IR_I2C=m
CONFIG_VIDEO_TVAUDIO=m
CONFIG_VIDEO_TDA7432=m
CONFIG_VIDEO_MSP3400=m
CONFIG_VIDEO_CS5345=m
CONFIG_VIDEO_CS53L32A=m
CONFIG_VIDEO_M52790=m
CONFIG_VIDEO_WM8775=m
CONFIG_VIDEO_WM8739=m
CONFIG_VIDEO_VP27SMPX=m
CONFIG_VIDEO_SAA6588=m
CONFIG_VIDEO_MT9V011=m
CONFIG_VIDEO_SAA711X=m
CONFIG_VIDEO_SAA717X=m
CONFIG_VIDEO_TVP5150=m
CONFIG_VIDEO_CX25840=m
CONFIG_VIDEO_CX2341X=m
CONFIG_VIDEO_SAA7127=m
CONFIG_VIDEO_UPD64031A=m
CONFIG_VIDEO_UPD64083=m
# CONFIG_VIDEO_VIVI is not set
CONFIG_VIDEO_BT848=m
CONFIG_VIDEO_BT848_DVB=y
# CONFIG_VIDEO_PMS is not set
# CONFIG_VIDEO_CPIA is not set
# CONFIG_VIDEO_CPIA2 is not set
# CONFIG_VIDEO_SAA5246A is not set
# CONFIG_VIDEO_SAA5249 is not set
# CONFIG_VIDEO_STRADIS is not set
# CONFIG_VIDEO_ZORAN is not set
CONFIG_VIDEO_SAA7134=m
CONFIG_VIDEO_SAA7134_ALSA=m
# CONFIG_VIDEO_SAA7134_DVB is not set
# CONFIG_VIDEO_MXB is not set
# CONFIG_VIDEO_HEXIUM_ORION is not set
# CONFIG_VIDEO_HEXIUM_GEMINI is not set
CONFIG_VIDEO_CX88=m
CONFIG_VIDEO_CX88_ALSA=m
# CONFIG_VIDEO_CX88_BLACKBIRD is not set
# CONFIG_VIDEO_CX88_DVB is not set
CONFIG_VIDEO_CX23885=m
CONFIG_VIDEO_AU0828=m
CONFIG_VIDEO_IVTV=m
CONFIG_VIDEO_FB_IVTV=m
CONFIG_VIDEO_CX18=m
# CONFIG_VIDEO_SAA7164 is not set
# CONFIG_VIDEO_CAFE_CCIC is not set
# CONFIG_SOC_CAMERA is not set
CONFIG_V4L_USB_DRIVERS=y
CONFIG_USB_VIDEO_CLASS=m
CONFIG_USB_VIDEO_CLASS_INPUT_EVDEV=y
# CONFIG_USB_GSPCA is not set
# CONFIG_VIDEO_PVRUSB2 is not set
# CONFIG_VIDEO_HDPVR is not set
CONFIG_VIDEO_EM28XX=m
CONFIG_VIDEO_EM28XX_ALSA=m
# CONFIG_VIDEO_EM28XX_DVB is not set
CONFIG_VIDEO_CX231XX=m
CONFIG_VIDEO_CX231XX_ALSA=m
# CONFIG_VIDEO_CX231XX_DVB is not set
# CONFIG_VIDEO_USBVISION is not set
# CONFIG_USB_VICAM is not set
# CONFIG_USB_IBMCAM is not set
# CONFIG_USB_KONICAWC is not set
# CONFIG_USB_QUICKCAM_MESSENGER is not set
# CONFIG_USB_ET61X251 is not set
# CONFIG_VIDEO_OVCAMCHIP is not set
# CONFIG_USB_OV511 is not set
# CONFIG_USB_SE401 is not set
# CONFIG_USB_SN9C102 is not set
# CONFIG_USB_STV680 is not set
# CONFIG_USB_ZC0301 is not set
# CONFIG_USB_PWC is not set
CONFIG_USB_PWC_INPUT_EVDEV=y
# CONFIG_USB_ZR364XX is not set
# CONFIG_USB_STKWEBCAM is not set
# CONFIG_USB_S2255 is not set
# CONFIG_RADIO_ADAPTERS is not set
CONFIG_DVB_MAX_ADAPTERS=8
# CONFIG_DVB_DYNAMIC_MINORS is not set
# CONFIG_DVB_CAPTURE_DRIVERS is not set
CONFIG_DVB_BT8XX=m
CONFIG_DVB_STV6110=m
CONFIG_DVB_STV0900=m
CONFIG_DVB_CX24116=m
CONFIG_DVB_DS3000=m
CONFIG_DVB_ZL10353=m
CONFIG_DVB_DIB7000P=m
CONFIG_DVB_TDA10048=m
CONFIG_DVB_LGDT330X=m
CONFIG_DVB_S5H1409=m
CONFIG_DVB_AU8522=m
CONFIG_DVB_S5H1411=m
CONFIG_DVB_LNBP21=m
CONFIG_DAB=y
# CONFIG_USB_DABUSB is not set

#
# Graphics support
#
CONFIG_AGP=m
# CONFIG_AGP_ALI is not set
# CONFIG_AGP_ATI is not set
# CONFIG_AGP_AMD is not set
# CONFIG_AGP_AMD64 is not set
CONFIG_AGP_INTEL=m
# CONFIG_AGP_NVIDIA is not set
# CONFIG_AGP_SIS is not set
# CONFIG_AGP_SWORKS is not set
# CONFIG_AGP_VIA is not set
# CONFIG_AGP_EFFICEON is not set
CONFIG_VGA_ARB=y
CONFIG_DRM=m
CONFIG_DRM_KMS_HELPER=m
CONFIG_DRM_TTM=m
# CONFIG_DRM_TDFX is not set
# CONFIG_DRM_R128 is not set
CONFIG_DRM_RADEON=m
# CONFIG_DRM_I810 is not set
# CONFIG_DRM_I830 is not set
CONFIG_DRM_I915=m
# CONFIG_DRM_I915_KMS is not set
# CONFIG_DRM_MGA is not set
# CONFIG_DRM_SIS is not set
# CONFIG_DRM_VIA is not set
# CONFIG_DRM_SAVAGE is not set
CONFIG_VGASTATE=m
CONFIG_VIDEO_OUTPUT_CONTROL=m
CONFIG_FB=y
CONFIG_FIRMWARE_EDID=y
CONFIG_FB_DDC=m
CONFIG_FB_BOOT_VESA_SUPPORT=y
CONFIG_FB_CFB_FILLRECT=y
CONFIG_FB_CFB_COPYAREA=y
CONFIG_FB_CFB_IMAGEBLIT=y
# CONFIG_FB_CFB_REV_PIXELS_IN_BYTE is not set
# CONFIG_FB_SYS_FILLRECT is not set
# CONFIG_FB_SYS_COPYAREA is not set
# CONFIG_FB_SYS_IMAGEBLIT is not set
# CONFIG_FB_FOREIGN_ENDIAN is not set
# CONFIG_FB_SYS_FOPS is not set
CONFIG_FB_SVGALIB=m
# CONFIG_FB_MACMODES is not set
CONFIG_FB_BACKLIGHT=y
CONFIG_FB_MODE_HELPERS=y
CONFIG_FB_TILEBLITTING=y

#
# Frame buffer hardware drivers
#
CONFIG_FB_CIRRUS=m
CONFIG_FB_PM2=m
CONFIG_FB_PM2_FIFO_DISCONNECT=y
CONFIG_FB_CYBER2000=m
# CONFIG_FB_ARC is not set
# CONFIG_FB_ASILIANT is not set
# CONFIG_FB_IMSTT is not set
CONFIG_FB_VGA16=m
CONFIG_FB_UVESA=m
CONFIG_FB_VESA=y
CONFIG_FB_EFI=y
# CONFIG_FB_N411 is not set
CONFIG_FB_HGA=m
# CONFIG_FB_HGA_ACCEL is not set
CONFIG_FB_S1D13XXX=m
CONFIG_FB_NVIDIA=m
CONFIG_FB_NVIDIA_I2C=y
# CONFIG_FB_NVIDIA_DEBUG is not set
CONFIG_FB_NVIDIA_BACKLIGHT=y
# CONFIG_FB_RIVA is not set
CONFIG_FB_I810=m
# CONFIG_FB_I810_GTF is not set
CONFIG_FB_LE80578=m
# CONFIG_FB_CARILLO_RANCH is not set
CONFIG_FB_MATROX=m
CONFIG_FB_MATROX_MILLENIUM=y
CONFIG_FB_MATROX_MYSTIQUE=y
CONFIG_FB_MATROX_G=y
CONFIG_FB_MATROX_I2C=m
# CONFIG_FB_MATROX_MAVEN is not set
CONFIG_FB_RADEON=m
CONFIG_FB_RADEON_I2C=y
CONFIG_FB_RADEON_BACKLIGHT=y
# CONFIG_FB_RADEON_DEBUG is not set
CONFIG_FB_ATY128=m
CONFIG_FB_ATY128_BACKLIGHT=y
CONFIG_FB_ATY=m
CONFIG_FB_ATY_CT=y
CONFIG_FB_ATY_GENERIC_LCD=y
CONFIG_FB_ATY_GX=y
CONFIG_FB_ATY_BACKLIGHT=y
CONFIG_FB_S3=m
CONFIG_FB_SAVAGE=m
CONFIG_FB_SAVAGE_I2C=y
# CONFIG_FB_SAVAGE_ACCEL is not set
CONFIG_FB_SIS=m
CONFIG_FB_SIS_300=y
CONFIG_FB_SIS_315=y
CONFIG_FB_VIA=m
CONFIG_FB_NEOMAGIC=m
CONFIG_FB_KYRO=m
CONFIG_FB_3DFX=m
# CONFIG_FB_3DFX_ACCEL is not set
CONFIG_FB_3DFX_I2C=y
CONFIG_FB_VOODOO1=m
CONFIG_FB_VT8623=m
CONFIG_FB_TRIDENT=m
CONFIG_FB_ARK=m
CONFIG_FB_PM3=m
# CONFIG_FB_CARMINE is not set
CONFIG_FB_GEODE=y
CONFIG_FB_GEODE_LX=m
CONFIG_FB_GEODE_GX=m
CONFIG_FB_GEODE_GX1=m
# CONFIG_FB_VIRTUAL is not set
# CONFIG_FB_METRONOME is not set
CONFIG_FB_MB862XX=m
CONFIG_FB_MB862XX_PCI_GDC=y
# CONFIG_FB_BROADSHEET is not set
CONFIG_BACKLIGHT_LCD_SUPPORT=y
# CONFIG_LCD_CLASS_DEVICE is not set
CONFIG_BACKLIGHT_CLASS_DEVICE=y
# CONFIG_BACKLIGHT_GENERIC is not set
# CONFIG_BACKLIGHT_PROGEAR is not set
# CONFIG_BACKLIGHT_MBP_NVIDIA is not set
# CONFIG_BACKLIGHT_SAHARA is not set

#
# Display device support
#
# CONFIG_DISPLAY_SUPPORT is not set

#
# Console display driver support
#
CONFIG_VGA_CONSOLE=y
# CONFIG_VGACON_SOFT_SCROLLBACK is not set
# CONFIG_MDA_CONSOLE is not set
CONFIG_DUMMY_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE=y
# CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY is not set
CONFIG_FRAMEBUFFER_CONSOLE_ROTATION=y
# CONFIG_FONTS is not set
CONFIG_FONT_8x8=y
CONFIG_FONT_8x16=y
# CONFIG_LOGO is not set
CONFIG_SOUND=m
CONFIG_SOUND_OSS_CORE=y
CONFIG_SOUND_OSS_CORE_PRECLAIM=y
CONFIG_SND=m
CONFIG_SND_TIMER=m
CONFIG_SND_PCM=m
CONFIG_SND_HWDEP=m
CONFIG_SND_RAWMIDI=m
CONFIG_SND_JACK=y
CONFIG_SND_SEQUENCER=m
# CONFIG_SND_SEQ_DUMMY is not set
CONFIG_SND_OSSEMUL=y
CONFIG_SND_MIXER_OSS=m
CONFIG_SND_PCM_OSS=m
CONFIG_SND_PCM_OSS_PLUGINS=y
# CONFIG_SND_SEQUENCER_OSS is not set
CONFIG_SND_HRTIMER=m
CONFIG_SND_SEQ_HRTIMER_DEFAULT=y
# CONFIG_SND_DYNAMIC_MINORS is not set
CONFIG_SND_SUPPORT_OLD_API=y
CONFIG_SND_VERBOSE_PROCFS=y
# CONFIG_SND_VERBOSE_PRINTK is not set
# CONFIG_SND_DEBUG is not set
CONFIG_SND_VMASTER=y
CONFIG_SND_DMA_SGBUF=y
CONFIG_SND_RAWMIDI_SEQ=m
CONFIG_SND_OPL3_LIB_SEQ=m
# CONFIG_SND_OPL4_LIB_SEQ is not set
# CONFIG_SND_SBAWE_SEQ is not set
CONFIG_SND_EMU10K1_SEQ=m
CONFIG_SND_MPU401_UART=m
CONFIG_SND_OPL3_LIB=m
CONFIG_SND_VX_LIB=m
CONFIG_SND_AC97_CODEC=m
CONFIG_SND_DRIVERS=y
CONFIG_SND_PCSP=m
CONFIG_SND_DUMMY=m
CONFIG_SND_VIRMIDI=m
# CONFIG_SND_MTPAV is not set
# CONFIG_SND_SERIAL_U16550 is not set
# CONFIG_SND_MPU401 is not set
CONFIG_SND_AC97_POWER_SAVE=y
CONFIG_SND_AC97_POWER_SAVE_DEFAULT=0
CONFIG_SND_SB_COMMON=m
CONFIG_SND_SB16_DSP=m
# CONFIG_SND_ISA is not set
CONFIG_SND_PCI=y
CONFIG_SND_AD1889=m
CONFIG_SND_ALS300=m
CONFIG_SND_ALS4000=m
CONFIG_SND_ALI5451=m
CONFIG_SND_ATIIXP=m
CONFIG_SND_ATIIXP_MODEM=m
CONFIG_SND_AU8810=m
CONFIG_SND_AU8820=m
CONFIG_SND_AU8830=m
# CONFIG_SND_AW2 is not set
CONFIG_SND_AZT3328=m
CONFIG_SND_BT87X=m
# CONFIG_SND_BT87X_OVERCLOCK is not set
CONFIG_SND_CA0106=m
CONFIG_SND_CMIPCI=m
CONFIG_SND_OXYGEN_LIB=m
CONFIG_SND_OXYGEN=m
CONFIG_SND_CS4281=m
CONFIG_SND_CS46XX=m
CONFIG_SND_CS46XX_NEW_DSP=y
CONFIG_SND_CS5530=m
CONFIG_SND_CS5535AUDIO=m
CONFIG_SND_CTXFI=m
CONFIG_SND_DARLA20=m
CONFIG_SND_GINA20=m
CONFIG_SND_LAYLA20=m
CONFIG_SND_DARLA24=m
CONFIG_SND_GINA24=m
CONFIG_SND_LAYLA24=m
CONFIG_SND_MONA=m
CONFIG_SND_MIA=m
CONFIG_SND_ECHO3G=m
CONFIG_SND_INDIGO=m
CONFIG_SND_INDIGOIO=m
CONFIG_SND_INDIGODJ=m
CONFIG_SND_INDIGOIOX=m
CONFIG_SND_INDIGODJX=m
CONFIG_SND_EMU10K1=m
CONFIG_SND_EMU10K1X=m
CONFIG_SND_ENS1370=m
CONFIG_SND_ENS1371=m
CONFIG_SND_ES1938=m
CONFIG_SND_ES1968=m
CONFIG_SND_FM801=m
CONFIG_SND_FM801_TEA575X_BOOL=y
CONFIG_SND_FM801_TEA575X=m
CONFIG_SND_HDA_INTEL=m
CONFIG_SND_HDA_HWDEP=y
CONFIG_SND_HDA_RECONFIG=y
CONFIG_SND_HDA_INPUT_BEEP=y
CONFIG_SND_HDA_INPUT_BEEP_MODE=1
CONFIG_SND_HDA_INPUT_JACK=y
# CONFIG_SND_HDA_PATCH_LOADER is not set
CONFIG_SND_HDA_CODEC_REALTEK=y
CONFIG_SND_HDA_CODEC_ANALOG=y
CONFIG_SND_HDA_CODEC_SIGMATEL=y
CONFIG_SND_HDA_CODEC_VIA=y
CONFIG_SND_HDA_CODEC_ATIHDMI=y
CONFIG_SND_HDA_CODEC_NVHDMI=y
CONFIG_SND_HDA_CODEC_INTELHDMI=y
CONFIG_SND_HDA_ELD=y
CONFIG_SND_HDA_CODEC_CIRRUS=y
CONFIG_SND_HDA_CODEC_CONEXANT=y
CONFIG_SND_HDA_CODEC_CA0110=y
CONFIG_SND_HDA_CODEC_CMEDIA=y
CONFIG_SND_HDA_CODEC_SI3054=y
CONFIG_SND_HDA_GENERIC=y
CONFIG_SND_HDA_POWER_SAVE=y
CONFIG_SND_HDA_POWER_SAVE_DEFAULT=0
CONFIG_SND_HDSP=m
CONFIG_SND_HDSPM=m
CONFIG_SND_HIFIER=m
CONFIG_SND_ICE1712=m
CONFIG_SND_ICE1724=m
CONFIG_SND_INTEL8X0=m
CONFIG_SND_INTEL8X0M=m
CONFIG_SND_KORG1212=m
CONFIG_SND_LX6464ES=m
CONFIG_SND_MAESTRO3=m
CONFIG_SND_MIXART=m
CONFIG_SND_NM256=m
CONFIG_SND_PCXHR=m
CONFIG_SND_RIPTIDE=m
CONFIG_SND_RME32=m
CONFIG_SND_RME96=m
CONFIG_SND_RME9652=m
CONFIG_SND_SIS7019=m
CONFIG_SND_SONICVIBES=m
CONFIG_SND_TRIDENT=m
CONFIG_SND_VIA82XX=m
CONFIG_SND_VIA82XX_MODEM=m
CONFIG_SND_VIRTUOSO=m
CONFIG_SND_VX222=m
CONFIG_SND_YMFPCI=m
# CONFIG_SND_SPI is not set
CONFIG_SND_USB=y
CONFIG_SND_USB_AUDIO=m
CONFIG_SND_USB_USX2Y=m
CONFIG_SND_USB_CAIAQ=m
CONFIG_SND_USB_CAIAQ_INPUT=y
CONFIG_SND_USB_US122L=m
# CONFIG_SND_SOC is not set
# CONFIG_SOUND_PRIME is not set
CONFIG_AC97_BUS=m
CONFIG_HID_SUPPORT=y
CONFIG_HID=m
# CONFIG_HIDRAW is not set

#
# USB Input Devices
#
CONFIG_USB_HID=m
CONFIG_HID_PID=y
# CONFIG_USB_HIDDEV is not set

#
# Special HID drivers
#
CONFIG_HID_A4TECH=m
CONFIG_HID_APPLE=m
CONFIG_HID_BELKIN=m
CONFIG_HID_CHERRY=m
CONFIG_HID_CHICONY=m
CONFIG_HID_CYPRESS=m
CONFIG_HID_DRAGONRISE=m
# CONFIG_DRAGONRISE_FF is not set
CONFIG_HID_EZKEY=m
CONFIG_HID_KYE=m
CONFIG_HID_GYRATION=m
CONFIG_HID_TWINHAN=m
CONFIG_HID_KENSINGTON=m
CONFIG_HID_LOGITECH=m
# CONFIG_LOGITECH_FF is not set
# CONFIG_LOGIRUMBLEPAD2_FF is not set
CONFIG_HID_MICROSOFT=m
CONFIG_HID_MONTEREY=m
CONFIG_HID_NTRIG=m
CONFIG_HID_PANTHERLORD=m
# CONFIG_PANTHERLORD_FF is not set
CONFIG_HID_PETALYNX=m
CONFIG_HID_SAMSUNG=m
CONFIG_HID_SONY=m
CONFIG_HID_SUNPLUS=m
CONFIG_HID_GREENASIA=m
# CONFIG_GREENASIA_FF is not set
CONFIG_HID_SMARTJOYPLUS=m
# CONFIG_SMARTJOYPLUS_FF is not set
CONFIG_HID_TOPSEED=m
CONFIG_HID_THRUSTMASTER=m
# CONFIG_THRUSTMASTER_FF is not set
CONFIG_HID_ZEROPLUS=m
# CONFIG_ZEROPLUS_FF is not set
CONFIG_USB_SUPPORT=y
CONFIG_USB_ARCH_HAS_HCD=y
CONFIG_USB_ARCH_HAS_OHCI=y
CONFIG_USB_ARCH_HAS_EHCI=y
CONFIG_USB=m
# CONFIG_USB_DEBUG is not set
CONFIG_USB_ANNOUNCE_NEW_DEVICES=y

#
# Miscellaneous USB options
#
CONFIG_USB_DEVICEFS=y
# CONFIG_USB_DEVICE_CLASS is not set
# CONFIG_USB_DYNAMIC_MINORS is not set
CONFIG_USB_SUSPEND=y
# CONFIG_USB_OTG is not set
# CONFIG_USB_MON is not set
CONFIG_USB_WUSB=m
# CONFIG_USB_WUSB_CBAF is not set

#
# USB Host Controller Drivers
#
# CONFIG_USB_C67X00_HCD is not set
# CONFIG_USB_XHCI_HCD is not set
CONFIG_USB_EHCI_HCD=m
# CONFIG_USB_EHCI_ROOT_HUB_TT is not set
# CONFIG_USB_EHCI_TT_NEWSCHED is not set
# CONFIG_USB_OXU210HP_HCD is not set
# CONFIG_USB_ISP116X_HCD is not set
# CONFIG_USB_ISP1760_HCD is not set
# CONFIG_USB_ISP1362_HCD is not set
# CONFIG_USB_OHCI_HCD is not set
CONFIG_USB_UHCI_HCD=m
# CONFIG_USB_SL811_HCD is not set
# CONFIG_USB_R8A66597_HCD is not set
# CONFIG_USB_WHCI_HCD is not set
# CONFIG_USB_HWA_HCD is not set

#
# Enable Host or Gadget support to see Inventra options
#

#
# USB Device Class drivers
#
# CONFIG_USB_ACM is not set
# CONFIG_USB_PRINTER is not set
# CONFIG_USB_WDM is not set
# CONFIG_USB_TMC is not set

#
# NOTE: USB_STORAGE depends on SCSI but BLK_DEV_SD may
#

#
# also be needed; see USB_STORAGE Help for more info
#
CONFIG_USB_STORAGE=m
# CONFIG_USB_STORAGE_DEBUG is not set
# CONFIG_USB_STORAGE_DATAFAB is not set
# CONFIG_USB_STORAGE_FREECOM is not set
# CONFIG_USB_STORAGE_ISD200 is not set
# CONFIG_USB_STORAGE_USBAT is not set
# CONFIG_USB_STORAGE_SDDR09 is not set
# CONFIG_USB_STORAGE_SDDR55 is not set
# CONFIG_USB_STORAGE_JUMPSHOT is not set
# CONFIG_USB_STORAGE_ALAUDA is not set
# CONFIG_USB_STORAGE_ONETOUCH is not set
# CONFIG_USB_STORAGE_KARMA is not set
# CONFIG_USB_STORAGE_CYPRESS_ATACB is not set
# CONFIG_USB_LIBUSUAL is not set

#
# USB Imaging devices
#
# CONFIG_USB_MDC800 is not set
# CONFIG_USB_MICROTEK is not set

#
# USB port drivers
#
# CONFIG_USB_SERIAL is not set

#
# USB Miscellaneous drivers
#
# CONFIG_USB_EMI62 is not set
# CONFIG_USB_EMI26 is not set
# CONFIG_USB_ADUTUX is not set
# CONFIG_USB_SEVSEG is not set
# CONFIG_USB_RIO500 is not set
# CONFIG_USB_LEGOTOWER is not set
# CONFIG_USB_LCD is not set
# CONFIG_USB_BERRY_CHARGE is not set
# CONFIG_USB_LED is not set
# CONFIG_USB_CYPRESS_CY7C63 is not set
# CONFIG_USB_CYTHERM is not set
# CONFIG_USB_IDMOUSE is not set
# CONFIG_USB_FTDI_ELAN is not set
CONFIG_USB_APPLEDISPLAY=m
# CONFIG_USB_SISUSBVGA is not set
# CONFIG_USB_LD is not set
# CONFIG_USB_TRANCEVIBRATOR is not set
# CONFIG_USB_IOWARRIOR is not set
# CONFIG_USB_TEST is not set
# CONFIG_USB_ISIGHTFW is not set
# CONFIG_USB_VST is not set
# CONFIG_USB_GADGET is not set

#
# OTG and related infrastructure
#
# CONFIG_NOP_USB_XCEIV is not set
CONFIG_UWB=m
# CONFIG_UWB_HWA is not set
# CONFIG_UWB_WHCI is not set
# CONFIG_UWB_WLP is not set
# CONFIG_MMC is not set
# CONFIG_MEMSTICK is not set
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=m

#
# LED drivers
#
# CONFIG_LEDS_ALIX2 is not set
# CONFIG_LEDS_PCA9532 is not set
# CONFIG_LEDS_LP3944 is not set
# CONFIG_LEDS_CLEVO_MAIL is not set
# CONFIG_LEDS_PCA955X is not set
# CONFIG_LEDS_DAC124S085 is not set
# CONFIG_LEDS_BD2802 is not set
# CONFIG_LEDS_INTEL_SS4200 is not set

#
# LED Triggers
#
CONFIG_LEDS_TRIGGERS=y
# CONFIG_LEDS_TRIGGER_TIMER is not set
# CONFIG_LEDS_TRIGGER_HEARTBEAT is not set
# CONFIG_LEDS_TRIGGER_BACKLIGHT is not set
# CONFIG_LEDS_TRIGGER_DEFAULT_ON is not set

#
# iptables trigger is under Netfilter config (LED target)
#
# CONFIG_ACCESSIBILITY is not set
# CONFIG_INFINIBAND is not set
# CONFIG_EDAC is not set
CONFIG_RTC_LIB=y
CONFIG_RTC_CLASS=y
CONFIG_RTC_HCTOSYS=y
CONFIG_RTC_HCTOSYS_DEVICE="rtc0"
# CONFIG_RTC_DEBUG is not set

#
# RTC interfaces
#
CONFIG_RTC_INTF_SYSFS=y
CONFIG_RTC_INTF_PROC=y
CONFIG_RTC_INTF_DEV=y
# CONFIG_RTC_INTF_DEV_UIE_EMUL is not set
# CONFIG_RTC_DRV_TEST is not set

#
# I2C RTC drivers
#
# CONFIG_RTC_DRV_DS1307 is not set
# CONFIG_RTC_DRV_DS1374 is not set
# CONFIG_RTC_DRV_DS1672 is not set
# CONFIG_RTC_DRV_MAX6900 is not set
# CONFIG_RTC_DRV_RS5C372 is not set
# CONFIG_RTC_DRV_ISL1208 is not set
# CONFIG_RTC_DRV_X1205 is not set
# CONFIG_RTC_DRV_PCF8563 is not set
# CONFIG_RTC_DRV_PCF8583 is not set
# CONFIG_RTC_DRV_M41T80 is not set
# CONFIG_RTC_DRV_BQ32K is not set
# CONFIG_RTC_DRV_S35390A is not set
# CONFIG_RTC_DRV_FM3130 is not set
# CONFIG_RTC_DRV_RX8581 is not set
# CONFIG_RTC_DRV_RX8025 is not set

#
# SPI RTC drivers
#
# CONFIG_RTC_DRV_M41T94 is not set
# CONFIG_RTC_DRV_DS1305 is not set
# CONFIG_RTC_DRV_DS1390 is not set
# CONFIG_RTC_DRV_MAX6902 is not set
# CONFIG_RTC_DRV_R9701 is not set
# CONFIG_RTC_DRV_RS5C348 is not set
# CONFIG_RTC_DRV_DS3234 is not set
# CONFIG_RTC_DRV_PCF2123 is not set

#
# Platform RTC drivers
#
CONFIG_RTC_DRV_CMOS=y
# CONFIG_RTC_DRV_DS1286 is not set
# CONFIG_RTC_DRV_DS1511 is not set
# CONFIG_RTC_DRV_DS1553 is not set
# CONFIG_RTC_DRV_DS1742 is not set
# CONFIG_RTC_DRV_STK17TA8 is not set
# CONFIG_RTC_DRV_M48T86 is not set
# CONFIG_RTC_DRV_M48T35 is not set
# CONFIG_RTC_DRV_M48T59 is not set
# CONFIG_RTC_DRV_MSM6242 is not set
# CONFIG_RTC_DRV_BQ4802 is not set
# CONFIG_RTC_DRV_RP5C01 is not set
# CONFIG_RTC_DRV_V3020 is not set

#
# on-CPU RTC drivers
#
# CONFIG_DMADEVICES is not set
# CONFIG_AUXDISPLAY is not set
# CONFIG_UIO is not set

#
# TI VLYNQ
#
# CONFIG_STAGING is not set
CONFIG_X86_PLATFORM_DEVICES=y
# CONFIG_ACER_WMI is not set
# CONFIG_ACERHDF is not set
# CONFIG_ASUS_LAPTOP is not set
# CONFIG_FUJITSU_LAPTOP is not set
# CONFIG_TC1100_WMI is not set
# CONFIG_MSI_LAPTOP is not set
# CONFIG_PANASONIC_LAPTOP is not set
# CONFIG_COMPAL_LAPTOP is not set
# CONFIG_SONY_LAPTOP is not set
# CONFIG_THINKPAD_ACPI is not set
# CONFIG_INTEL_MENLOW is not set
CONFIG_EEEPC_LAPTOP=m
# CONFIG_ACPI_WMI is not set
# CONFIG_ACPI_ASUS is not set
# CONFIG_TOPSTAR_LAPTOP is not set
# CONFIG_ACPI_TOSHIBA is not set
# CONFIG_TOSHIBA_BT_RFKILL is not set
# CONFIG_ACPI_CMPC is not set

#
# Firmware Drivers
#
# CONFIG_EDD is not set
CONFIG_FIRMWARE_MEMMAP=y
# CONFIG_EFI_VARS is not set
# CONFIG_DELL_RBU is not set
# CONFIG_DCDBAS is not set
CONFIG_DMIID=y
CONFIG_ISCSI_IBFT_FIND=y
CONFIG_ISCSI_IBFT=y

#
# File systems
#
CONFIG_EXT2_FS=m
CONFIG_EXT2_FS_XATTR=y
CONFIG_EXT2_FS_POSIX_ACL=y
CONFIG_EXT2_FS_SECURITY=y
# CONFIG_EXT2_FS_XIP is not set
CONFIG_EXT3_FS=m
CONFIG_EXT3_DEFAULTS_TO_ORDERED=y
CONFIG_EXT3_FS_XATTR=y
CONFIG_EXT3_FS_POSIX_ACL=y
CONFIG_EXT3_FS_SECURITY=y
CONFIG_EXT4_FS=m
CONFIG_EXT4_FS_XATTR=y
CONFIG_EXT4_FS_POSIX_ACL=y
CONFIG_EXT4_FS_SECURITY=y
# CONFIG_EXT4_DEBUG is not set
CONFIG_JBD=m
# CONFIG_JBD_DEBUG is not set
CONFIG_JBD2=m
# CONFIG_JBD2_DEBUG is not set
CONFIG_FS_MBCACHE=m
# CONFIG_REISERFS_FS is not set
# CONFIG_JFS_FS is not set
CONFIG_FS_POSIX_ACL=y
# CONFIG_XFS_FS is not set
CONFIG_GFS2_FS=m
CONFIG_GFS2_FS_LOCKING_DLM=y
# CONFIG_OCFS2_FS is not set
# CONFIG_BTRFS_FS is not set
# CONFIG_NILFS2_FS is not set
CONFIG_FILE_LOCKING=y
CONFIG_FSNOTIFY=y
CONFIG_DNOTIFY=y
CONFIG_INOTIFY=y
CONFIG_INOTIFY_USER=y
CONFIG_QUOTA=y
CONFIG_QUOTA_NETLINK_INTERFACE=y
CONFIG_PRINT_QUOTA_WARNING=y
# CONFIG_QFMT_V1 is not set
# CONFIG_QFMT_V2 is not set
CONFIG_QUOTACTL=y
# CONFIG_AUTOFS_FS is not set
# CONFIG_AUTOFS4_FS is not set
CONFIG_FUSE_FS=m
# CONFIG_CUSE is not set
CONFIG_GENERIC_ACL=y

#
# Caches
#
# CONFIG_FSCACHE is not set

#
# CD-ROM/DVD Filesystems
#
# CONFIG_ISO9660_FS is not set
# CONFIG_UDF_FS is not set

#
# DOS/FAT/NT Filesystems
#
CONFIG_FAT_FS=m
CONFIG_MSDOS_FS=m
CONFIG_VFAT_FS=m
CONFIG_FAT_DEFAULT_CODEPAGE=437
CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1"
# CONFIG_NTFS_FS is not set

#
# Pseudo filesystems
#
CONFIG_PROC_FS=y
CONFIG_PROC_KCORE=y
CONFIG_PROC_SYSCTL=y
CONFIG_PROC_PAGE_MONITOR=y
CONFIG_SYSFS=y
CONFIG_TMPFS=y
CONFIG_TMPFS_POSIX_ACL=y
CONFIG_HUGETLBFS=y
CONFIG_HUGETLB_PAGE=y
CONFIG_CONFIGFS_FS=m
# CONFIG_MISC_FILESYSTEMS is not set
# CONFIG_NETWORK_FILESYSTEMS is not set

#
# Partition Types
#
# CONFIG_PARTITION_ADVANCED is not set
CONFIG_MSDOS_PARTITION=y
CONFIG_NLS=y
CONFIG_NLS_DEFAULT="utf8"
CONFIG_NLS_CODEPAGE_437=y
# CONFIG_NLS_CODEPAGE_737 is not set
# CONFIG_NLS_CODEPAGE_775 is not set
CONFIG_NLS_CODEPAGE_850=y
CONFIG_NLS_CODEPAGE_852=y
# CONFIG_NLS_CODEPAGE_855 is not set
# CONFIG_NLS_CODEPAGE_857 is not set
# CONFIG_NLS_CODEPAGE_860 is not set
# CONFIG_NLS_CODEPAGE_861 is not set
# CONFIG_NLS_CODEPAGE_862 is not set
# CONFIG_NLS_CODEPAGE_863 is not set
# CONFIG_NLS_CODEPAGE_864 is not set
# CONFIG_NLS_CODEPAGE_865 is not set
# CONFIG_NLS_CODEPAGE_866 is not set
# CONFIG_NLS_CODEPAGE_869 is not set
# CONFIG_NLS_CODEPAGE_936 is not set
# CONFIG_NLS_CODEPAGE_950 is not set
# CONFIG_NLS_CODEPAGE_932 is not set
# CONFIG_NLS_CODEPAGE_949 is not set
# CONFIG_NLS_CODEPAGE_874 is not set
# CONFIG_NLS_ISO8859_8 is not set
CONFIG_NLS_CODEPAGE_1250=y
# CONFIG_NLS_CODEPAGE_1251 is not set
# CONFIG_NLS_ASCII is not set
CONFIG_NLS_ISO8859_1=y
# CONFIG_NLS_ISO8859_2 is not set
# CONFIG_NLS_ISO8859_3 is not set
# CONFIG_NLS_ISO8859_4 is not set
# CONFIG_NLS_ISO8859_5 is not set
# CONFIG_NLS_ISO8859_6 is not set
# CONFIG_NLS_ISO8859_7 is not set
# CONFIG_NLS_ISO8859_9 is not set
# CONFIG_NLS_ISO8859_13 is not set
# CONFIG_NLS_ISO8859_14 is not set
# CONFIG_NLS_ISO8859_15 is not set
# CONFIG_NLS_KOI8_R is not set
# CONFIG_NLS_KOI8_U is not set
CONFIG_NLS_UTF8=y
CONFIG_DLM=m
# CONFIG_DLM_DEBUG is not set

#
# Kernel hacking
#
CONFIG_TRACE_IRQFLAGS_SUPPORT=y
CONFIG_PRINTK_TIME=y
CONFIG_ENABLE_WARN_DEPRECATED=y
CONFIG_ENABLE_MUST_CHECK=y
CONFIG_FRAME_WARN=1024
CONFIG_MAGIC_SYSRQ=y
CONFIG_STRIP_ASM_SYMS=y
CONFIG_UNUSED_SYMBOLS=y
CONFIG_DEBUG_FS=y
# CONFIG_HEADERS_CHECK is not set
CONFIG_DEBUG_KERNEL=y
# CONFIG_DEBUG_SHIRQ is not set
CONFIG_DETECT_SOFTLOCKUP=y
# CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC is not set
CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC_VALUE=0
CONFIG_DETECT_HUNG_TASK=y
# CONFIG_BOOTPARAM_HUNG_TASK_PANIC is not set
CONFIG_BOOTPARAM_HUNG_TASK_PANIC_VALUE=0
CONFIG_SCHED_DEBUG=y
# CONFIG_SCHEDSTATS is not set
CONFIG_TIMER_STATS=y
# CONFIG_DEBUG_OBJECTS is not set
# CONFIG_DEBUG_SLAB is not set
# CONFIG_DEBUG_KMEMLEAK is not set
# CONFIG_DEBUG_RT_MUTEXES is not set
# CONFIG_RT_MUTEX_TESTER is not set
# CONFIG_DEBUG_SPINLOCK is not set
# CONFIG_DEBUG_MUTEXES is not set
# CONFIG_DEBUG_LOCK_ALLOC is not set
# CONFIG_PROVE_LOCKING is not set
# CONFIG_LOCK_STAT is not set
# CONFIG_DEBUG_SPINLOCK_SLEEP is not set
# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
CONFIG_STACKTRACE=y
# CONFIG_DEBUG_KOBJECT is not set
# CONFIG_DEBUG_HIGHMEM is not set
CONFIG_DEBUG_BUGVERBOSE=y
# CONFIG_DEBUG_INFO is not set
# CONFIG_DEBUG_VM is not set
# CONFIG_DEBUG_VIRTUAL is not set
# CONFIG_DEBUG_WRITECOUNT is not set
CONFIG_DEBUG_MEMORY_INIT=y
# CONFIG_DEBUG_LIST is not set
# CONFIG_DEBUG_SG is not set
# CONFIG_DEBUG_NOTIFIERS is not set
# CONFIG_DEBUG_CREDENTIALS is not set
CONFIG_ARCH_WANT_FRAME_POINTERS=y
# CONFIG_FRAME_POINTER is not set
# CONFIG_BOOT_PRINTK_DELAY is not set
# CONFIG_RCU_TORTURE_TEST is not set
# CONFIG_RCU_CPU_STALL_DETECTOR is not set
# CONFIG_BACKTRACE_SELF_TEST is not set
# CONFIG_DEBUG_BLOCK_EXT_DEVT is not set
# CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
# CONFIG_FAULT_INJECTION is not set
# CONFIG_LATENCYTOP is not set
CONFIG_SYSCTL_SYSCALL_CHECK=y
# CONFIG_DEBUG_PAGEALLOC is not set
CONFIG_USER_STACKTRACE_SUPPORT=y
CONFIG_NOP_TRACER=y
CONFIG_HAVE_FUNCTION_TRACER=y
CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
CONFIG_HAVE_FUNCTION_GRAPH_FP_TEST=y
CONFIG_HAVE_FUNCTION_TRACE_MCOUNT_TEST=y
CONFIG_HAVE_DYNAMIC_FTRACE=y
CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
CONFIG_RING_BUFFER=y
CONFIG_EVENT_TRACING=y
CONFIG_CONTEXT_SWITCH_TRACER=y
CONFIG_TRACING=y
CONFIG_GENERIC_TRACER=y
CONFIG_TRACING_SUPPORT=y
CONFIG_FTRACE=y
# CONFIG_FUNCTION_TRACER is not set
# CONFIG_IRQSOFF_TRACER is not set
# CONFIG_SYSPROF_TRACER is not set
# CONFIG_SCHED_TRACER is not set
# CONFIG_FTRACE_SYSCALLS is not set
CONFIG_BOOT_TRACER=y
CONFIG_BRANCH_PROFILE_NONE=y
# CONFIG_PROFILE_ANNOTATED_BRANCHES is not set
# CONFIG_PROFILE_ALL_BRANCHES is not set
# CONFIG_POWER_TRACER is not set
# CONFIG_KSYM_TRACER is not set
# CONFIG_STACK_TRACER is not set
# CONFIG_KMEMTRACE is not set
# CONFIG_WORKQUEUE_TRACER is not set
CONFIG_BLK_DEV_IO_TRACE=y
# CONFIG_FTRACE_STARTUP_TEST is not set
# CONFIG_MMIOTRACE is not set
# CONFIG_RING_BUFFER_BENCHMARK is not set
# CONFIG_PROVIDE_OHCI1394_DMA_INIT is not set
# CONFIG_DYNAMIC_DEBUG is not set
# CONFIG_DMA_API_DEBUG is not set
# CONFIG_SAMPLES is not set
CONFIG_HAVE_ARCH_KGDB=y
# CONFIG_KGDB is not set
CONFIG_HAVE_ARCH_KMEMCHECK=y
CONFIG_STRICT_DEVMEM=y
CONFIG_X86_VERBOSE_BOOTUP=y
CONFIG_EARLY_PRINTK=y
# CONFIG_EARLY_PRINTK_DBGP is not set
# CONFIG_DEBUG_STACKOVERFLOW is not set
# CONFIG_DEBUG_STACK_USAGE is not set
# CONFIG_DEBUG_PER_CPU_MAPS is not set
# CONFIG_X86_PTDUMP is not set
CONFIG_DEBUG_RODATA=y
# CONFIG_DEBUG_RODATA_TEST is not set
# CONFIG_DEBUG_NX_TEST is not set
# CONFIG_4KSTACKS is not set
CONFIG_DOUBLEFAULT=y
# CONFIG_IOMMU_STRESS is not set
CONFIG_HAVE_MMIOTRACE_SUPPORT=y
CONFIG_IO_DELAY_TYPE_0X80=0
CONFIG_IO_DELAY_TYPE_0XED=1
CONFIG_IO_DELAY_TYPE_UDELAY=2
CONFIG_IO_DELAY_TYPE_NONE=3
CONFIG_IO_DELAY_0X80=y
# CONFIG_IO_DELAY_0XED is not set
# CONFIG_IO_DELAY_UDELAY is not set
# CONFIG_IO_DELAY_NONE is not set
CONFIG_DEFAULT_IO_DELAY_TYPE=0
# CONFIG_DEBUG_BOOT_PARAMS is not set
# CONFIG_CPA_DEBUG is not set
CONFIG_OPTIMIZE_INLINING=y
# CONFIG_DEBUG_STRICT_USER_COPY_CHECKS is not set

#
# Security options
#
CONFIG_KEYS=y
# CONFIG_KEYS_DEBUG_PROC_KEYS is not set
CONFIG_SECURITY=y
CONFIG_SECURITYFS=y
CONFIG_SECURITY_NETWORK=y
CONFIG_SECURITY_NETWORK_XFRM=y
# CONFIG_SECURITY_PATH is not set
# CONFIG_INTEL_TXT is not set
CONFIG_LSM_MMAP_MIN_ADDR=0
CONFIG_SECURITY_SELINUX=y
CONFIG_SECURITY_SELINUX_BOOTPARAM=y
CONFIG_SECURITY_SELINUX_BOOTPARAM_VALUE=0
CONFIG_SECURITY_SELINUX_DISABLE=y
CONFIG_SECURITY_SELINUX_DEVELOP=y
CONFIG_SECURITY_SELINUX_AVC_STATS=y
CONFIG_SECURITY_SELINUX_CHECKREQPROT_VALUE=1
# CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX is not set
# CONFIG_SECURITY_TOMOYO is not set
# CONFIG_IMA is not set
CONFIG_DEFAULT_SECURITY_SELINUX=y
# CONFIG_DEFAULT_SECURITY_SMACK is not set
# CONFIG_DEFAULT_SECURITY_TOMOYO is not set
# CONFIG_DEFAULT_SECURITY_DAC is not set
CONFIG_DEFAULT_SECURITY="selinux"
CONFIG_CRYPTO=y

#
# Crypto core or helper
#
CONFIG_CRYPTO_ALGAPI=y
CONFIG_CRYPTO_ALGAPI2=y
CONFIG_CRYPTO_AEAD=m
CONFIG_CRYPTO_AEAD2=y
CONFIG_CRYPTO_BLKCIPHER=m
CONFIG_CRYPTO_BLKCIPHER2=y
CONFIG_CRYPTO_HASH=y
CONFIG_CRYPTO_HASH2=y
CONFIG_CRYPTO_RNG2=y
CONFIG_CRYPTO_PCOMP=y
CONFIG_CRYPTO_MANAGER=y
CONFIG_CRYPTO_MANAGER2=y
# CONFIG_CRYPTO_GF128MUL is not set
# CONFIG_CRYPTO_NULL is not set
CONFIG_CRYPTO_WORKQUEUE=y
# CONFIG_CRYPTO_CRYPTD is not set
CONFIG_CRYPTO_AUTHENC=m
# CONFIG_CRYPTO_TEST is not set

#
# Authenticated Encryption with Associated Data
#
# CONFIG_CRYPTO_CCM is not set
# CONFIG_CRYPTO_GCM is not set
# CONFIG_CRYPTO_SEQIV is not set

#
# Block modes
#
CONFIG_CRYPTO_CBC=m
# CONFIG_CRYPTO_CTR is not set
# CONFIG_CRYPTO_CTS is not set
CONFIG_CRYPTO_ECB=m
# CONFIG_CRYPTO_LRW is not set
CONFIG_CRYPTO_PCBC=m
# CONFIG_CRYPTO_XTS is not set

#
# Hash modes
#
CONFIG_CRYPTO_HMAC=m
# CONFIG_CRYPTO_XCBC is not set
# CONFIG_CRYPTO_VMAC is not set

#
# Digest
#
CONFIG_CRYPTO_CRC32C=m
# CONFIG_CRYPTO_CRC32C_INTEL is not set
# CONFIG_CRYPTO_GHASH is not set
# CONFIG_CRYPTO_MD4 is not set
CONFIG_CRYPTO_MD5=y
CONFIG_CRYPTO_MICHAEL_MIC=m
# CONFIG_CRYPTO_RMD128 is not set
# CONFIG_CRYPTO_RMD160 is not set
# CONFIG_CRYPTO_RMD256 is not set
# CONFIG_CRYPTO_RMD320 is not set
CONFIG_CRYPTO_SHA1=m
# CONFIG_CRYPTO_SHA256 is not set
# CONFIG_CRYPTO_SHA512 is not set
# CONFIG_CRYPTO_TGR192 is not set
# CONFIG_CRYPTO_WP512 is not set

#
# Ciphers
#
CONFIG_CRYPTO_AES=m
# CONFIG_CRYPTO_AES_586 is not set
# CONFIG_CRYPTO_ANUBIS is not set
CONFIG_CRYPTO_ARC4=m
# CONFIG_CRYPTO_BLOWFISH is not set
# CONFIG_CRYPTO_CAMELLIA is not set
CONFIG_CRYPTO_CAST5=m
# CONFIG_CRYPTO_CAST6 is not set
CONFIG_CRYPTO_DES=m
CONFIG_CRYPTO_FCRYPT=m
# CONFIG_CRYPTO_KHAZAD is not set
# CONFIG_CRYPTO_SALSA20 is not set
# CONFIG_CRYPTO_SALSA20_586 is not set
# CONFIG_CRYPTO_SEED is not set
# CONFIG_CRYPTO_SERPENT is not set
# CONFIG_CRYPTO_TEA is not set
# CONFIG_CRYPTO_TWOFISH is not set
# CONFIG_CRYPTO_TWOFISH_586 is not set

#
# Compression
#
CONFIG_CRYPTO_DEFLATE=m
# CONFIG_CRYPTO_ZLIB is not set
CONFIG_CRYPTO_LZO=m

#
# Random Number Generation
#
# CONFIG_CRYPTO_ANSI_CPRNG is not set
# CONFIG_CRYPTO_HW is not set
CONFIG_HAVE_KVM=y
# CONFIG_VIRTUALIZATION is not set
CONFIG_BINARY_PRINTF=y

#
# Library routines
#
CONFIG_BITREVERSE=y
CONFIG_GENERIC_FIND_FIRST_BIT=y
CONFIG_GENERIC_FIND_NEXT_BIT=y
CONFIG_GENERIC_FIND_LAST_BIT=y
# CONFIG_CRC_CCITT is not set
CONFIG_CRC16=m
CONFIG_CRC_T10DIF=m
# CONFIG_CRC_ITU_T is not set
CONFIG_CRC32=y
# CONFIG_CRC7 is not set
CONFIG_LIBCRC32C=m
CONFIG_AUDIT_GENERIC=y
CONFIG_ZLIB_INFLATE=y
CONFIG_ZLIB_DEFLATE=m
CONFIG_LZO_COMPRESS=m
CONFIG_LZO_DECOMPRESS=y
CONFIG_DECOMPRESS_GZIP=y
CONFIG_DECOMPRESS_BZIP2=y
CONFIG_DECOMPRESS_LZMA=y
CONFIG_DECOMPRESS_LZO=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT=y
CONFIG_HAS_DMA=y
CONFIG_NLATTR=y

[-- Attachment #5: Type: text/plain, Size: 0 bytes --]

Re: s2disk hang update

[Alan Jenkins]

[-- Attachment #1: Type: text/plain, Size: 3741 bytes --]

On 1/2/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> On Saturday 02 January 2010, Alan Jenkins wrote:
> Hi,
>
>> I've been suffering from s2disk hangs again.  This time, the hangs
>> were always before the hibernation image was written out.
>>
>> They're still frustratingly random.  I just started trying to work out
>> whether doubling PAGES_FOR_IO makes them go away, but they went away
>> on their own again.
>>
>> I did manage to capture a backtrace with debug info though.  Here it
>> is for 2.6.33-rc2.  (It has also happened on rc1).  I was able to get
>> the line numbers (using gdb, e.g.  "info line
>> *stop_machine_create+0x27"), having built the kernel with debug info.
>>
>> [top of trace lost due to screen height]
>> ? sync_page	(filemap.c:183)
>> ? wait_on_page_bit	(filemap.c:506)
>> ? wake_bit_function	(wait.c:174)
>> ? shrink_page_list	(vmscan.c:696)
>> ? __delayacct_blkio_end	(delayacct.c:94)
>> ? finish_wait	(list.h:142)
>> ? congestion_wait	(backing-dev.c:761)
>> ? shrink_inactive_list	(vmscan.c:1193)
>> ? scsi_request_fn	(spinlock.h:306)
>> ? blk_run_queue	(blk-core.c:434)
>> ? shrink_zone	(vmscan.c:1484)
>> ? do_try_to_free_pages	(vmscan.c:1684)
>> ? try_to_free_pages	(vmscan.c:1848)
>> ? isolate_pages_global	(vmscan.c:980)
>> ? __alloc_pages_nodemask	(page_alloc.c:1702)
>> ? __get_free_pages	(page_alloc.c:1990)
>> ? copy_process	(fork.c:237)
>> ? do_fork	(fork.c:1443)
>> ? rb_erase
>> ? __switch_to
>> ? kthread
>> ? kernel_thread
>> ? kthread
>> ? kernel_thread_helper
>> ? kthreadd
>> ? kthreadd
>> ? kernel_thread_helper
>>
>> INFO: task s2disk:2174 blocked for more than 120 seconds
>
> This looks like we have run out of memory while creating a new kernel thread
> and we have blocked on I/O while trying to free some space (quite obviously,
> because the I/O doesn't work at this point).

For context, the kernel thread being created here is the stop_machine
thread.  It is created by disable_nonboot_cpus(), called from
hibernation_snapshot().  See e.g. this hung task backtrace -

http://picasaweb.google.com/lh/photo/BkKUwZCrQ2ceBIM9ZOh7Ow?feat=directlink

> I think it should help if you increase PAGES_FOR_IO, then.

Ok, it's been happening again on 2.6.33-rc6.  Unfortunately increasing
PAGES_FOR_IO doesn't help.

I've been using a test patch to make PAGES_FOR_IO tunable at run time.
 I get the same hang if I increase it by a factor of 10, to 10240:

# cd /sys/module/kernel/parameters/
# ls
consoleblank  initcall_debug  PAGES_FOR_IO  panic  pause_on_oops  SPARE_PAGES
# echo 10240 > PAGES_FOR_IO
# echo 2560 > SPARE_PAGES
# cat SPARE_PAGES
2560
# cat PAGES_FOR_IO
10240

I also added a debug patch to try and understand the calculations with
PAGES_FOR_IO in hibernate_preallocate_memory().  I still don't really
understand them and there could easily be errors in my debug patch,
but the output is interesting.

Increasing PAGES_FOR_IO by almost 10000 has the expected effect of
decreasing "max_size" by the same amount.  However it doesn't appear
to increase the number of free pages at the critical moment.

PAGES_FOR_IO = 1024:
http://picasaweb.google.com/lh/photo/DYQGvB_4hvCvVuxZf2ibxg?feat=directlink

PAGES_FOR_IO = 10240:
http://picasaweb.google.com/lh/photo/AIkV_ZBwt22nzN-JdOJCWA?feat=directlink


You may remember that I was originally able to avoid the hang by
reverting commit 5f8dcc2.  It doesn't revert cleanly any more.
However, I tried applying my test&debug patches on top of 5f8dcc2~1
(just before the commit that triggered the hang).  That kernel
apparently left ~5000 pages free at hibernation time, v.s. ~1200 when
testing the same scenario on 2.6.33-rc6.  (As before, the number of
free pages remained the same if I increased PAGES_FOR_IO to 10240).

Regards
Alan

[-- Attachment #2: test.patch --]
[-- Type: text/x-patch, Size: 1303 bytes --]

diff --git a/kernel/power/power.h b/kernel/power/power.h
index 46c5a26..05611d4 100644
--- a/kernel/power/power.h
+++ b/kernel/power/power.h
@@ -37,13 +37,13 @@ static inline char *check_image_kernel(struct swsusp_info *info)
  * Keep some memory free so that I/O operations can succeed without paging
  * [Might this be more than 4 MB?]
  */
-#define PAGES_FOR_IO	((4096 * 1024) >> PAGE_SHIFT)
+extern int PAGES_FOR_IO;
 
 /*
  * Keep 1 MB of memory free so that device drivers can allocate some pages in
  * their .suspend() routines without breaking the suspend to disk.
  */
-#define SPARE_PAGES	((1024 * 1024) >> PAGE_SHIFT)
+extern int SPARE_PAGES;
 
 /* kernel/power/hibernate.c */
 extern int hibernation_snapshot(int platform_mode);
diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
index 36cb168..0985d11 100644
--- a/kernel/power/snapshot.c
+++ b/kernel/power/snapshot.c
@@ -35,6 +35,13 @@
 
 #include "power.h"
 
+int PAGES_FOR_IO = (4096 * 1024) >> PAGE_SHIFT;
+core_param(PAGES_FOR_IO, PAGES_FOR_IO, int, 0644);
+
+int SPARE_PAGES = (1024 * 1024) >> PAGE_SHIFT;
+core_param(SPARE_PAGES, SPARE_PAGES, int, 0644);
+
+
 static int swsusp_page_is_free(struct page *);
 static void swsusp_set_page_forbidden(struct page *);
 static void swsusp_unset_page_forbidden(struct page *);

[-- Attachment #3: debug.patch --]
[-- Type: text/x-patch, Size: 4876 bytes --]

diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c
index bbfe472..1130ed0 100644
--- a/kernel/power/hibernate.c
+++ b/kernel/power/hibernate.c
@@ -262,10 +262,12 @@ static int create_image(int platform_mode)
 	if (error || hibernation_test(TEST_PLATFORM))
 		goto Platform_finish;
 
+	dbg_log_free_pages();
 	error = disable_nonboot_cpus();
 	if (error || hibernation_test(TEST_CPUS)
 	    || hibernation_testmode(HIBERNATION_TEST))
 		goto Enable_cpus;
+	dbg_log_free_pages();
 
 	local_irq_disable();
 
@@ -496,9 +498,11 @@ int hibernation_platform_enter(void)
 	if (error)
 		goto Platform_finish;
 
+	dbg_log_free_pages();
 	error = disable_nonboot_cpus();
 	if (error)
 		goto Platform_finish;
+	dbg_log_free_pages();
 
 	local_irq_disable();
 	sysdev_suspend(PMSG_HIBERNATE);
diff --git a/kernel/power/power.h b/kernel/power/power.h
index 05611d4..496de77 100644
--- a/kernel/power/power.h
+++ b/kernel/power/power.h
@@ -236,3 +236,5 @@ static inline void suspend_thaw_processes(void)
 {
 }
 #endif
+
+extern void dbg_log_free_pages(void);
diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
index 0985d11..b7241a9 100644
--- a/kernel/power/snapshot.c
+++ b/kernel/power/snapshot.c
@@ -64,6 +64,31 @@ struct pbe *restore_pblist;
 /* Pointer to an auxiliary buffer (1 page) */
 static void *buffer;
 
+
+void dbg_log_free_pages(void)
+{
+	unsigned long free = 0, freeable;
+	struct zone *zone;
+
+	for_each_populated_zone(zone) {
+		if (is_highmem(zone))
+			free += zone_page_state(zone, NR_FREE_PAGES);
+		else
+			free += zone_page_state(zone, NR_FREE_PAGES);
+	}
+
+	freeable = global_page_state(NR_SLAB_RECLAIMABLE)
+		+ global_page_state(NR_ACTIVE_ANON)
+		+ global_page_state(NR_INACTIVE_ANON)
+		+ global_page_state(NR_ACTIVE_FILE)
+		+ global_page_state(NR_INACTIVE_FILE)
+		- global_page_state(NR_FILE_MAPPED);
+
+	pr_info("PM_D: %ld pages free + %ld freeable (total %ld)\n",
+		free, freeable, free + freeable);
+}
+
+
 /**
  *	@safe_needed - on resume, for storing the PBE list and the image,
  *	we can only use memory pages that do not conflict with the pages
@@ -1268,7 +1293,7 @@ int hibernate_preallocate_memory(void)
 	struct timeval start, stop;
 	int error;
 
-	printk(KERN_INFO "PM: Preallocating image memory... ");
+	printk(KERN_INFO "PM: Preallocating image memory...\n");
 	do_gettimeofday(&start);
 
 	error = memory_bm_create(&orig_bm, GFP_IMAGE, PG_ANY);
@@ -1285,6 +1310,8 @@ int hibernate_preallocate_memory(void)
 	/* Count the number of saveable data pages. */
 	save_highmem = count_highmem_pages();
 	saveable = count_data_pages();
+	pr_info("PM_D: saveable pages: %ld + %ld (highmem) = %ld\n",
+		saveable, save_highmem, saveable + save_highmem);
 
 	/*
 	 * Compute the total number of page frames we can use (count) and the
@@ -1301,29 +1328,50 @@ int hibernate_preallocate_memory(void)
 		else
 			count += zone_page_state(zone, NR_FREE_PAGES);
 	}
+	pr_info("PM_D: total page count: %ld + %ld (highmem) = %ld\n",
+		count, highmem, count + highmem);
+
 	count += highmem;
+	
+	pr_info("PM_D: total page count: %ld - %ld (pgalloc reserve) = %ld\n",
+		count, totalreserve_pages, count - totalreserve_pages);
+
 	count -= totalreserve_pages;
 
+	pr_info("PM_D: image metadata needed = %ld\n", size);
+
 	/* Compute the maximum number of saveable pages to leave in memory. */
 	max_size = (count - (size + PAGES_FOR_IO)) / 2 - 2 * SPARE_PAGES;
+
+	pr_info("PM_D: max_size = %ld\n", max_size);
+
 	size = DIV_ROUND_UP(image_size, PAGE_SIZE);
 	if (size > max_size)
 		size = max_size;
+
+	pr_info("PM_D: (max) size = %ld\n", size);
+
 	/*
 	 * If the maximum is not less than the current number of saveable pages
 	 * in memory, allocate page frames for the image and we're done.
 	 */
 	if (size >= saveable) {
+		dbg_log_free_pages();
+		pr_info("PM_D: ok, go ahead with full image\n");
 		pages = preallocate_image_highmem(save_highmem);
 		pages += preallocate_image_memory(saveable - pages);
+		dbg_log_free_pages();
 		goto out;
 	}
+	pr_info("PM_D: need to free some pages\n");
 
 	/* Estimate the minimum size of the image. */
 	pages = minimum_image_size(saveable);
 	if (size < pages)
 		size = min_t(unsigned long, pages, max_size);
 
+	pr_info("PM_D: (min) pages = %ld\n", pages);
+
 	/*
 	 * Let the memory management subsystem know that we're going to need a
 	 * large number of page frames to allocate and make it free some memory.
@@ -1357,11 +1405,13 @@ int hibernate_preallocate_memory(void)
 	 * pages in memory, but we have allocated more.  Release the excessive
 	 * ones now.
 	 */
+	dbg_log_free_pages();
 	free_unnecessary_pages();
-
+	dbg_log_free_pages();
  out:
 	do_gettimeofday(&stop);
-	printk(KERN_CONT "done (allocated %lu pages)\n", pages);
+	printk(KERN_INFO "PM: done (allocated %lu pages)\n", pages);
+	
 	swsusp_show_speed(&start, &stop, pages, "Allocated");
 
 	return 0;

[-- Attachment #4: .config --]
[-- Type: text/x-mpsub, Size: 68380 bytes --]

#
# Automatically generated make config: don't edit
# Linux kernel version: 2.6.33-rc5
# Fri Jan 29 17:07:41 2010
#
# CONFIG_64BIT is not set
CONFIG_X86_32=y
# CONFIG_X86_64 is not set
CONFIG_X86=y
CONFIG_OUTPUT_FORMAT="elf32-i386"
CONFIG_ARCH_DEFCONFIG="arch/x86/configs/i386_defconfig"
CONFIG_GENERIC_TIME=y
CONFIG_GENERIC_CMOS_UPDATE=y
CONFIG_CLOCKSOURCE_WATCHDOG=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_HAVE_LATENCYTOP_SUPPORT=y
CONFIG_MMU=y
CONFIG_ZONE_DMA=y
CONFIG_GENERIC_ISA_DMA=y
CONFIG_GENERIC_IOMAP=y
CONFIG_GENERIC_BUG=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_ARCH_MAY_HAVE_PC_FDC=y
# CONFIG_RWSEM_GENERIC_SPINLOCK is not set
CONFIG_RWSEM_XCHGADD_ALGORITHM=y
CONFIG_ARCH_HAS_CPU_IDLE_WAIT=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
# CONFIG_GENERIC_TIME_VSYSCALL is not set
CONFIG_ARCH_HAS_CPU_RELAX=y
CONFIG_ARCH_HAS_DEFAULT_IDLE=y
CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
CONFIG_HAVE_SETUP_PER_CPU_AREA=y
CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y
CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK=y
# CONFIG_HAVE_CPUMASK_OF_CPU_MAP is not set
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
# CONFIG_ZONE_DMA32 is not set
CONFIG_ARCH_POPULATES_NODE_MAP=y
# CONFIG_AUDIT_ARCH is not set
CONFIG_ARCH_SUPPORTS_OPTIMIZED_INLINING=y
CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y
CONFIG_HAVE_INTEL_TXT=y
CONFIG_GENERIC_HARDIRQS=y
CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ=y
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_GENERIC_PENDING_IRQ=y
CONFIG_USE_GENERIC_SMP_HELPERS=y
CONFIG_X86_32_SMP=y
CONFIG_X86_HT=y
CONFIG_X86_TRAMPOLINE=y
CONFIG_KTIME_SCALAR=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
CONFIG_CONSTRUCTORS=y

#
# General setup
#
CONFIG_EXPERIMENTAL=y
CONFIG_LOCK_KERNEL=y
CONFIG_INIT_ENV_ARG_LIMIT=32
CONFIG_LOCALVERSION="eeepc"
CONFIG_LOCALVERSION_AUTO=y
CONFIG_HAVE_KERNEL_GZIP=y
CONFIG_HAVE_KERNEL_BZIP2=y
CONFIG_HAVE_KERNEL_LZMA=y
CONFIG_HAVE_KERNEL_LZO=y
CONFIG_KERNEL_GZIP=y
# CONFIG_KERNEL_BZIP2 is not set
# CONFIG_KERNEL_LZMA is not set
# CONFIG_KERNEL_LZO is not set
CONFIG_SWAP=y
CONFIG_SYSVIPC=y
CONFIG_SYSVIPC_SYSCTL=y
CONFIG_POSIX_MQUEUE=y
CONFIG_POSIX_MQUEUE_SYSCTL=y
CONFIG_BSD_PROCESS_ACCT=y
CONFIG_BSD_PROCESS_ACCT_V3=y
CONFIG_TASKSTATS=y
CONFIG_TASK_DELAY_ACCT=y
CONFIG_TASK_XACCT=y
CONFIG_TASK_IO_ACCOUNTING=y
CONFIG_AUDIT=y
CONFIG_AUDITSYSCALL=y
CONFIG_AUDIT_TREE=y

#
# RCU Subsystem
#
CONFIG_TREE_RCU=y
# CONFIG_TREE_PREEMPT_RCU is not set
# CONFIG_TINY_RCU is not set
# CONFIG_RCU_TRACE is not set
CONFIG_RCU_FANOUT=32
# CONFIG_RCU_FANOUT_EXACT is not set
# CONFIG_TREE_RCU_TRACE is not set
CONFIG_IKCONFIG=m
# CONFIG_IKCONFIG_PROC is not set
CONFIG_LOG_BUF_SHIFT=17
CONFIG_HAVE_UNSTABLE_SCHED_CLOCK=y
CONFIG_GROUP_SCHED=y
CONFIG_FAIR_GROUP_SCHED=y
# CONFIG_RT_GROUP_SCHED is not set
# CONFIG_USER_SCHED is not set
CONFIG_CGROUP_SCHED=y
CONFIG_CGROUPS=y
# CONFIG_CGROUP_DEBUG is not set
CONFIG_CGROUP_NS=y
CONFIG_CGROUP_FREEZER=y
CONFIG_CGROUP_DEVICE=y
CONFIG_CPUSETS=y
CONFIG_PROC_PID_CPUSET=y
CONFIG_CGROUP_CPUACCT=y
# CONFIG_RESOURCE_COUNTERS is not set
# CONFIG_SYSFS_DEPRECATED_V2 is not set
CONFIG_RELAY=y
CONFIG_NAMESPACES=y
CONFIG_UTS_NS=y
CONFIG_IPC_NS=y
CONFIG_USER_NS=y
CONFIG_PID_NS=y
CONFIG_NET_NS=y
CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE=""
CONFIG_RD_GZIP=y
CONFIG_RD_BZIP2=y
CONFIG_RD_LZMA=y
CONFIG_RD_LZO=y
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
CONFIG_SYSCTL=y
CONFIG_ANON_INODES=y
# CONFIG_EMBEDDED is not set
CONFIG_UID16=y
CONFIG_SYSCTL_SYSCALL=y
CONFIG_KALLSYMS=y
# CONFIG_KALLSYMS_ALL is not set
# CONFIG_KALLSYMS_EXTRA_PASS is not set
CONFIG_HOTPLUG=y
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_ELF_CORE=y
CONFIG_PCSPKR_PLATFORM=y
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_EPOLL=y
CONFIG_SIGNALFD=y
CONFIG_TIMERFD=y
CONFIG_EVENTFD=y
CONFIG_SHMEM=y
CONFIG_AIO=y
CONFIG_HAVE_PERF_EVENTS=y

#
# Kernel Performance Events And Counters
#
CONFIG_PERF_EVENTS=y
CONFIG_EVENT_PROFILE=y
CONFIG_PERF_COUNTERS=y
# CONFIG_DEBUG_PERF_USE_VMALLOC is not set
CONFIG_VM_EVENT_COUNTERS=y
CONFIG_PCI_QUIRKS=y
# CONFIG_COMPAT_BRK is not set
CONFIG_SLAB=y
# CONFIG_SLUB is not set
# CONFIG_SLOB is not set
CONFIG_PROFILING=y
CONFIG_TRACEPOINTS=y
# CONFIG_OPROFILE is not set
CONFIG_HAVE_OPROFILE=y
# CONFIG_KPROBES is not set
CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
CONFIG_HAVE_IOREMAP_PROT=y
CONFIG_HAVE_KPROBES=y
CONFIG_HAVE_KRETPROBES=y
CONFIG_HAVE_ARCH_TRACEHOOK=y
CONFIG_HAVE_DMA_ATTRS=y
CONFIG_HAVE_DMA_API_DEBUG=y
CONFIG_HAVE_HW_BREAKPOINT=y
CONFIG_HAVE_USER_RETURN_NOTIFIER=y

#
# GCOV-based kernel profiling
#
# CONFIG_GCOV_KERNEL is not set
CONFIG_SLOW_WORK=y
# CONFIG_SLOW_WORK_DEBUG is not set
CONFIG_HAVE_GENERIC_DMA_COHERENT=y
CONFIG_SLABINFO=y
CONFIG_RT_MUTEXES=y
CONFIG_BASE_SMALL=0
CONFIG_MODULES=y
CONFIG_MODULE_FORCE_LOAD=y
CONFIG_MODULE_UNLOAD=y
# CONFIG_MODULE_FORCE_UNLOAD is not set
CONFIG_MODVERSIONS=y
# CONFIG_MODULE_SRCVERSION_ALL is not set
CONFIG_STOP_MACHINE=y
CONFIG_BLOCK=y
CONFIG_LBDAF=y
CONFIG_BLK_DEV_BSG=y
CONFIG_BLK_DEV_INTEGRITY=y
# CONFIG_BLK_CGROUP is not set

#
# IO Schedulers
#
CONFIG_IOSCHED_NOOP=y
CONFIG_IOSCHED_DEADLINE=y
CONFIG_IOSCHED_CFQ=y
# CONFIG_CFQ_GROUP_IOSCHED is not set
# CONFIG_DEFAULT_DEADLINE is not set
CONFIG_DEFAULT_CFQ=y
# CONFIG_DEFAULT_NOOP is not set
CONFIG_DEFAULT_IOSCHED="cfq"
# CONFIG_INLINE_SPIN_TRYLOCK is not set
# CONFIG_INLINE_SPIN_TRYLOCK_BH is not set
# CONFIG_INLINE_SPIN_LOCK is not set
# CONFIG_INLINE_SPIN_LOCK_BH is not set
# CONFIG_INLINE_SPIN_LOCK_IRQ is not set
# CONFIG_INLINE_SPIN_LOCK_IRQSAVE is not set
CONFIG_INLINE_SPIN_UNLOCK=y
# CONFIG_INLINE_SPIN_UNLOCK_BH is not set
CONFIG_INLINE_SPIN_UNLOCK_IRQ=y
# CONFIG_INLINE_SPIN_UNLOCK_IRQRESTORE is not set
# CONFIG_INLINE_READ_TRYLOCK is not set
# CONFIG_INLINE_READ_LOCK is not set
# CONFIG_INLINE_READ_LOCK_BH is not set
# CONFIG_INLINE_READ_LOCK_IRQ is not set
# CONFIG_INLINE_READ_LOCK_IRQSAVE is not set
CONFIG_INLINE_READ_UNLOCK=y
# CONFIG_INLINE_READ_UNLOCK_BH is not set
CONFIG_INLINE_READ_UNLOCK_IRQ=y
# CONFIG_INLINE_READ_UNLOCK_IRQRESTORE is not set
# CONFIG_INLINE_WRITE_TRYLOCK is not set
# CONFIG_INLINE_WRITE_LOCK is not set
# CONFIG_INLINE_WRITE_LOCK_BH is not set
# CONFIG_INLINE_WRITE_LOCK_IRQ is not set
# CONFIG_INLINE_WRITE_LOCK_IRQSAVE is not set
CONFIG_INLINE_WRITE_UNLOCK=y
# CONFIG_INLINE_WRITE_UNLOCK_BH is not set
CONFIG_INLINE_WRITE_UNLOCK_IRQ=y
# CONFIG_INLINE_WRITE_UNLOCK_IRQRESTORE is not set
CONFIG_MUTEX_SPIN_ON_OWNER=y
CONFIG_FREEZER=y

#
# Processor type and features
#
CONFIG_TICK_ONESHOT=y
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
CONFIG_SMP=y
# CONFIG_SPARSE_IRQ is not set
CONFIG_X86_MPPARSE=y
CONFIG_X86_BIGSMP=y
# CONFIG_X86_EXTENDED_PLATFORM is not set
CONFIG_X86_SUPPORTS_MEMORY_FAILURE=y
CONFIG_SCHED_OMIT_FRAME_POINTER=y
# CONFIG_PARAVIRT_GUEST is not set
# CONFIG_MEMTEST is not set
# CONFIG_M386 is not set
# CONFIG_M486 is not set
# CONFIG_M586 is not set
# CONFIG_M586TSC is not set
# CONFIG_M586MMX is not set
# CONFIG_M686 is not set
# CONFIG_MPENTIUMII is not set
# CONFIG_MPENTIUMIII is not set
CONFIG_MPENTIUMM=y
# CONFIG_MPENTIUM4 is not set
# CONFIG_MK6 is not set
# CONFIG_MK7 is not set
# CONFIG_MK8 is not set
# CONFIG_MCRUSOE is not set
# CONFIG_MEFFICEON is not set
# CONFIG_MWINCHIPC6 is not set
# CONFIG_MWINCHIP3D is not set
# CONFIG_MGEODEGX1 is not set
# CONFIG_MGEODE_LX is not set
# CONFIG_MCYRIXIII is not set
# CONFIG_MVIAC3_2 is not set
# CONFIG_MVIAC7 is not set
# CONFIG_MPSC is not set
# CONFIG_MCORE2 is not set
# CONFIG_MATOM is not set
# CONFIG_GENERIC_CPU is not set
CONFIG_X86_GENERIC=y
CONFIG_X86_CPU=y
CONFIG_X86_INTERNODE_CACHE_SHIFT=6
CONFIG_X86_CMPXCHG=y
CONFIG_X86_L1_CACHE_SHIFT=6
CONFIG_X86_XADD=y
CONFIG_X86_WP_WORKS_OK=y
CONFIG_X86_INVLPG=y
CONFIG_X86_BSWAP=y
CONFIG_X86_POPAD_OK=y
CONFIG_X86_INTEL_USERCOPY=y
CONFIG_X86_USE_PPRO_CHECKSUM=y
CONFIG_X86_TSC=y
CONFIG_X86_CMPXCHG64=y
CONFIG_X86_CMOV=y
CONFIG_X86_MINIMUM_CPU_FAMILY=5
CONFIG_X86_DEBUGCTLMSR=y
CONFIG_CPU_SUP_INTEL=y
CONFIG_CPU_SUP_CYRIX_32=y
CONFIG_CPU_SUP_AMD=y
CONFIG_CPU_SUP_CENTAUR=y
CONFIG_CPU_SUP_TRANSMETA_32=y
CONFIG_CPU_SUP_UMC_32=y
# CONFIG_X86_DS is not set
CONFIG_HPET_TIMER=y
CONFIG_HPET_EMULATE_RTC=y
CONFIG_DMI=y
# CONFIG_IOMMU_HELPER is not set
CONFIG_IOMMU_API=y
CONFIG_NR_CPUS=32
CONFIG_SCHED_SMT=y
CONFIG_SCHED_MC=y
# CONFIG_PREEMPT_NONE is not set
CONFIG_PREEMPT_VOLUNTARY=y
# CONFIG_PREEMPT is not set
CONFIG_X86_LOCAL_APIC=y
CONFIG_X86_IO_APIC=y
CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS=y
CONFIG_X86_MCE=y
CONFIG_X86_MCE_INTEL=y
CONFIG_X86_MCE_AMD=y
# CONFIG_X86_ANCIENT_MCE is not set
CONFIG_X86_MCE_THRESHOLD=y
# CONFIG_X86_MCE_INJECT is not set
CONFIG_X86_THERMAL_VECTOR=y
CONFIG_VM86=y
# CONFIG_TOSHIBA is not set
# CONFIG_I8K is not set
# CONFIG_X86_REBOOTFIXUPS is not set
# CONFIG_MICROCODE is not set
# CONFIG_X86_MSR is not set
# CONFIG_X86_CPUID is not set
# CONFIG_NOHIGHMEM is not set
CONFIG_HIGHMEM4G=y
# CONFIG_HIGHMEM64G is not set
CONFIG_PAGE_OFFSET=0xC0000000
CONFIG_HIGHMEM=y
# CONFIG_ARCH_PHYS_ADDR_T_64BIT is not set
CONFIG_ARCH_FLATMEM_ENABLE=y
CONFIG_ARCH_SPARSEMEM_ENABLE=y
CONFIG_ARCH_SELECT_MEMORY_MODEL=y
CONFIG_ILLEGAL_POINTER_VALUE=0
CONFIG_SELECT_MEMORY_MODEL=y
CONFIG_FLATMEM_MANUAL=y
# CONFIG_DISCONTIGMEM_MANUAL is not set
# CONFIG_SPARSEMEM_MANUAL is not set
CONFIG_FLATMEM=y
CONFIG_FLAT_NODE_MEM_MAP=y
CONFIG_SPARSEMEM_STATIC=y
CONFIG_PAGEFLAGS_EXTENDED=y
CONFIG_SPLIT_PTLOCK_CPUS=4
# CONFIG_PHYS_ADDR_T_64BIT is not set
CONFIG_ZONE_DMA_FLAG=1
CONFIG_BOUNCE=y
CONFIG_VIRT_TO_BUS=y
# CONFIG_KSM is not set
CONFIG_DEFAULT_MMAP_MIN_ADDR=65536
CONFIG_ARCH_SUPPORTS_MEMORY_FAILURE=y
# CONFIG_MEMORY_FAILURE is not set
CONFIG_HIGHPTE=y
# CONFIG_X86_CHECK_BIOS_CORRUPTION is not set
CONFIG_X86_RESERVE_LOW_64K=y
# CONFIG_MATH_EMULATION is not set
CONFIG_MTRR=y
CONFIG_MTRR_SANITIZER=y
CONFIG_MTRR_SANITIZER_ENABLE_DEFAULT=0
CONFIG_MTRR_SANITIZER_SPARE_REG_NR_DEFAULT=1
CONFIG_X86_PAT=y
CONFIG_ARCH_USES_PG_UNCACHED=y
CONFIG_EFI=y
CONFIG_SECCOMP=y
CONFIG_CC_STACKPROTECTOR=y
# CONFIG_HZ_100 is not set
CONFIG_HZ_250=y
# CONFIG_HZ_300 is not set
# CONFIG_HZ_1000 is not set
CONFIG_HZ=250
CONFIG_SCHED_HRTICK=y
CONFIG_KEXEC=y
# CONFIG_CRASH_DUMP is not set
# CONFIG_KEXEC_JUMP is not set
CONFIG_PHYSICAL_START=0x1000000
CONFIG_RELOCATABLE=y
CONFIG_X86_NEED_RELOCS=y
CONFIG_PHYSICAL_ALIGN=0x1000000
CONFIG_HOTPLUG_CPU=y
# CONFIG_COMPAT_VDSO is not set
# CONFIG_CMDLINE_BOOL is not set
CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y

#
# Power management and ACPI options
#
CONFIG_PM=y
# CONFIG_PM_DEBUG is not set
CONFIG_PM_SLEEP_SMP=y
CONFIG_PM_SLEEP=y
CONFIG_SUSPEND=y
CONFIG_SUSPEND_FREEZER=y
CONFIG_HIBERNATION_NVS=y
CONFIG_HIBERNATION=y
CONFIG_PM_STD_PARTITION=""
# CONFIG_PM_RUNTIME is not set
CONFIG_ACPI=y
CONFIG_ACPI_SLEEP=y
CONFIG_ACPI_PROCFS=y
# CONFIG_ACPI_PROCFS_POWER is not set
# CONFIG_ACPI_POWER_METER is not set
CONFIG_ACPI_SYSFS_POWER=y
# CONFIG_ACPI_PROC_EVENT is not set
CONFIG_ACPI_AC=m
CONFIG_ACPI_BATTERY=m
CONFIG_ACPI_BUTTON=m
CONFIG_ACPI_VIDEO=m
CONFIG_ACPI_FAN=m
CONFIG_ACPI_DOCK=y
CONFIG_ACPI_PROCESSOR=m
CONFIG_ACPI_HOTPLUG_CPU=y
# CONFIG_ACPI_PROCESSOR_AGGREGATOR is not set
CONFIG_ACPI_THERMAL=m
# CONFIG_ACPI_CUSTOM_DSDT is not set
CONFIG_ACPI_BLACKLIST_YEAR=0
CONFIG_ACPI_DEBUG=y
# CONFIG_ACPI_DEBUG_FUNC_TRACE is not set
# CONFIG_ACPI_PCI_SLOT is not set
CONFIG_X86_PM_TIMER=y
CONFIG_ACPI_CONTAINER=m
# CONFIG_ACPI_SBS is not set
# CONFIG_ACPI_APEI is not set
# CONFIG_SFI is not set
# CONFIG_APM is not set

#
# CPU Frequency scaling
#
# CONFIG_CPU_FREQ is not set
CONFIG_CPU_IDLE=y
CONFIG_CPU_IDLE_GOV_LADDER=y
CONFIG_CPU_IDLE_GOV_MENU=y

#
# Bus options (PCI etc.)
#
CONFIG_PCI=y
# CONFIG_PCI_GOBIOS is not set
# CONFIG_PCI_GOMMCONFIG is not set
# CONFIG_PCI_GODIRECT is not set
# CONFIG_PCI_GOOLPC is not set
CONFIG_PCI_GOANY=y
CONFIG_PCI_BIOS=y
CONFIG_PCI_DIRECT=y
CONFIG_PCI_MMCONFIG=y
CONFIG_PCI_DOMAINS=y
CONFIG_DMAR=y
# CONFIG_DMAR_DEFAULT_ON is not set
CONFIG_DMAR_FLOPPY_WA=y
CONFIG_PCIEPORTBUS=y
# CONFIG_HOTPLUG_PCI_PCIE is not set
CONFIG_PCIEAER=y
# CONFIG_PCIE_ECRC is not set
# CONFIG_PCIEAER_INJECT is not set
# CONFIG_PCIEASPM is not set
CONFIG_ARCH_SUPPORTS_MSI=y
CONFIG_PCI_MSI=y
CONFIG_PCI_LEGACY=y
# CONFIG_PCI_DEBUG is not set
# CONFIG_PCI_STUB is not set
CONFIG_HT_IRQ=y
CONFIG_PCI_IOV=y
CONFIG_PCI_IOAPIC=y
CONFIG_ISA_DMA_API=y
CONFIG_ISA=y
# CONFIG_EISA is not set
# CONFIG_MCA is not set
# CONFIG_SCx200 is not set
# CONFIG_OLPC is not set
# CONFIG_PCCARD is not set
CONFIG_HOTPLUG_PCI=m
# CONFIG_HOTPLUG_PCI_FAKE is not set
# CONFIG_HOTPLUG_PCI_COMPAQ is not set
# CONFIG_HOTPLUG_PCI_IBM is not set
# CONFIG_HOTPLUG_PCI_ACPI is not set
# CONFIG_HOTPLUG_PCI_CPCI is not set
# CONFIG_HOTPLUG_PCI_SHPC is not set

#
# Executable file formats / Emulations
#
CONFIG_BINFMT_ELF=y
CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
CONFIG_HAVE_AOUT=y
# CONFIG_BINFMT_AOUT is not set
# CONFIG_BINFMT_MISC is not set
CONFIG_HAVE_ATOMIC_IOMAP=y
CONFIG_NET=y

#
# Networking options
#
CONFIG_PACKET=y
CONFIG_PACKET_MMAP=y
CONFIG_UNIX=y
CONFIG_XFRM=y
# CONFIG_XFRM_USER is not set
# CONFIG_XFRM_SUB_POLICY is not set
# CONFIG_XFRM_MIGRATE is not set
# CONFIG_XFRM_STATISTICS is not set
CONFIG_XFRM_IPCOMP=m
CONFIG_NET_KEY=m
# CONFIG_NET_KEY_MIGRATE is not set
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
CONFIG_IP_ADVANCED_ROUTER=y
CONFIG_ASK_IP_FIB_HASH=y
# CONFIG_IP_FIB_TRIE is not set
CONFIG_IP_FIB_HASH=y
CONFIG_IP_MULTIPLE_TABLES=y
CONFIG_IP_ROUTE_MULTIPATH=y
CONFIG_IP_ROUTE_VERBOSE=y
# CONFIG_IP_PNP is not set
# CONFIG_NET_IPIP is not set
# CONFIG_NET_IPGRE is not set
CONFIG_IP_MROUTE=y
CONFIG_IP_PIMSM_V1=y
CONFIG_IP_PIMSM_V2=y
# CONFIG_ARPD is not set
CONFIG_SYN_COOKIES=y
CONFIG_INET_AH=m
CONFIG_INET_ESP=m
CONFIG_INET_IPCOMP=m
CONFIG_INET_XFRM_TUNNEL=m
CONFIG_INET_TUNNEL=m
CONFIG_INET_XFRM_MODE_TRANSPORT=m
CONFIG_INET_XFRM_MODE_TUNNEL=m
CONFIG_INET_XFRM_MODE_BEET=m
CONFIG_INET_LRO=y
# CONFIG_INET_DIAG is not set
CONFIG_TCP_CONG_ADVANCED=y
# CONFIG_TCP_CONG_BIC is not set
CONFIG_TCP_CONG_CUBIC=y
# CONFIG_TCP_CONG_WESTWOOD is not set
# CONFIG_TCP_CONG_HTCP is not set
# CONFIG_TCP_CONG_HSTCP is not set
# CONFIG_TCP_CONG_HYBLA is not set
# CONFIG_TCP_CONG_VEGAS is not set
# CONFIG_TCP_CONG_SCALABLE is not set
# CONFIG_TCP_CONG_LP is not set
# CONFIG_TCP_CONG_VENO is not set
# CONFIG_TCP_CONG_YEAH is not set
# CONFIG_TCP_CONG_ILLINOIS is not set
# CONFIG_DEFAULT_BIC is not set
CONFIG_DEFAULT_CUBIC=y
# CONFIG_DEFAULT_HTCP is not set
# CONFIG_DEFAULT_VEGAS is not set
# CONFIG_DEFAULT_WESTWOOD is not set
# CONFIG_DEFAULT_RENO is not set
CONFIG_DEFAULT_TCP_CONG="cubic"
CONFIG_TCP_MD5SIG=y
CONFIG_IPV6=y
CONFIG_IPV6_PRIVACY=y
CONFIG_IPV6_ROUTER_PREF=y
CONFIG_IPV6_ROUTE_INFO=y
CONFIG_IPV6_OPTIMISTIC_DAD=y
CONFIG_INET6_AH=m
CONFIG_INET6_ESP=m
CONFIG_INET6_IPCOMP=m
CONFIG_IPV6_MIP6=y
CONFIG_INET6_XFRM_TUNNEL=m
CONFIG_INET6_TUNNEL=m
CONFIG_INET6_XFRM_MODE_TRANSPORT=m
CONFIG_INET6_XFRM_MODE_TUNNEL=m
CONFIG_INET6_XFRM_MODE_BEET=m
CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION=m
# CONFIG_IPV6_SIT is not set
# CONFIG_IPV6_TUNNEL is not set
CONFIG_IPV6_MULTIPLE_TABLES=y
CONFIG_IPV6_SUBTREES=y
CONFIG_IPV6_MROUTE=y
CONFIG_IPV6_PIMSM_V2=y
# CONFIG_NETLABEL is not set
CONFIG_NETWORK_SECMARK=y
CONFIG_NETFILTER=y
# CONFIG_NETFILTER_DEBUG is not set
CONFIG_NETFILTER_ADVANCED=y

#
# Core Netfilter Configuration
#
# CONFIG_NETFILTER_NETLINK_QUEUE is not set
# CONFIG_NETFILTER_NETLINK_LOG is not set
# CONFIG_NF_CONNTRACK is not set
# CONFIG_NETFILTER_XTABLES is not set
# CONFIG_IP_VS is not set

#
# IP: Netfilter Configuration
#
# CONFIG_NF_DEFRAG_IPV4 is not set
# CONFIG_IP_NF_QUEUE is not set
# CONFIG_IP_NF_IPTABLES is not set
# CONFIG_IP_NF_ARPTABLES is not set

#
# IPv6: Netfilter Configuration
#
# CONFIG_IP6_NF_QUEUE is not set
# CONFIG_IP6_NF_IPTABLES is not set
# CONFIG_IP_DCCP is not set
CONFIG_IP_SCTP=m
# CONFIG_SCTP_DBG_MSG is not set
# CONFIG_SCTP_DBG_OBJCNT is not set
# CONFIG_SCTP_HMAC_NONE is not set
# CONFIG_SCTP_HMAC_SHA1 is not set
CONFIG_SCTP_HMAC_MD5=y
# CONFIG_RDS is not set
# CONFIG_TIPC is not set
# CONFIG_ATM is not set
# CONFIG_BRIDGE is not set
# CONFIG_NET_DSA is not set
# CONFIG_VLAN_8021Q is not set
# CONFIG_DECNET is not set
# CONFIG_LLC2 is not set
# CONFIG_IPX is not set
# CONFIG_ATALK is not set
# CONFIG_X25 is not set
# CONFIG_LAPB is not set
# CONFIG_ECONET is not set
# CONFIG_WAN_ROUTER is not set
# CONFIG_PHONET is not set
# CONFIG_IEEE802154 is not set
CONFIG_NET_SCHED=y

#
# Queueing/Scheduling
#
# CONFIG_NET_SCH_CBQ is not set
# CONFIG_NET_SCH_HTB is not set
# CONFIG_NET_SCH_HFSC is not set
# CONFIG_NET_SCH_PRIO is not set
# CONFIG_NET_SCH_MULTIQ is not set
# CONFIG_NET_SCH_RED is not set
# CONFIG_NET_SCH_SFQ is not set
# CONFIG_NET_SCH_TEQL is not set
# CONFIG_NET_SCH_TBF is not set
# CONFIG_NET_SCH_GRED is not set
# CONFIG_NET_SCH_DSMARK is not set
# CONFIG_NET_SCH_NETEM is not set
# CONFIG_NET_SCH_DRR is not set
# CONFIG_NET_SCH_INGRESS is not set

#
# Classification
#
CONFIG_NET_CLS=y
# CONFIG_NET_CLS_BASIC is not set
# CONFIG_NET_CLS_TCINDEX is not set
# CONFIG_NET_CLS_ROUTE4 is not set
# CONFIG_NET_CLS_FW is not set
# CONFIG_NET_CLS_U32 is not set
# CONFIG_NET_CLS_RSVP is not set
# CONFIG_NET_CLS_RSVP6 is not set
# CONFIG_NET_CLS_FLOW is not set
CONFIG_NET_CLS_CGROUP=y
CONFIG_NET_EMATCH=y
CONFIG_NET_EMATCH_STACK=32
# CONFIG_NET_EMATCH_CMP is not set
# CONFIG_NET_EMATCH_NBYTE is not set
# CONFIG_NET_EMATCH_U32 is not set
# CONFIG_NET_EMATCH_META is not set
# CONFIG_NET_EMATCH_TEXT is not set
CONFIG_NET_CLS_ACT=y
# CONFIG_NET_ACT_POLICE is not set
# CONFIG_NET_ACT_GACT is not set
# CONFIG_NET_ACT_MIRRED is not set
# CONFIG_NET_ACT_NAT is not set
# CONFIG_NET_ACT_PEDIT is not set
# CONFIG_NET_ACT_SIMP is not set
# CONFIG_NET_ACT_SKBEDIT is not set
CONFIG_NET_SCH_FIFO=y
CONFIG_DCB=y

#
# Network testing
#
# CONFIG_NET_PKTGEN is not set
# CONFIG_NET_DROP_MONITOR is not set
# CONFIG_HAMRADIO is not set
# CONFIG_CAN is not set
# CONFIG_IRDA is not set
# CONFIG_BT is not set
CONFIG_AF_RXRPC=m
# CONFIG_AF_RXRPC_DEBUG is not set
CONFIG_RXKAD=m
CONFIG_FIB_RULES=y
CONFIG_WIRELESS=y
CONFIG_WEXT_CORE=y
CONFIG_WEXT_PROC=y
CONFIG_CFG80211=m
# CONFIG_NL80211_TESTMODE is not set
# CONFIG_CFG80211_DEVELOPER_WARNINGS is not set
# CONFIG_CFG80211_REG_DEBUG is not set
CONFIG_CFG80211_DEFAULT_PS=y
# CONFIG_CFG80211_DEBUGFS is not set
CONFIG_WIRELESS_OLD_REGULATORY=y
CONFIG_CFG80211_WEXT=y
# CONFIG_WIRELESS_EXT_SYSFS is not set
CONFIG_LIB80211=m
# CONFIG_LIB80211_DEBUG is not set
CONFIG_MAC80211=m
CONFIG_MAC80211_RC_MINSTREL=y
# CONFIG_MAC80211_RC_DEFAULT_PID is not set
CONFIG_MAC80211_RC_DEFAULT_MINSTREL=y
CONFIG_MAC80211_RC_DEFAULT="minstrel"
# CONFIG_MAC80211_MESH is not set
CONFIG_MAC80211_LEDS=y
# CONFIG_MAC80211_DEBUGFS is not set
# CONFIG_MAC80211_DEBUG_MENU is not set
# CONFIG_WIMAX is not set
CONFIG_RFKILL=m
CONFIG_RFKILL_LEDS=y
CONFIG_RFKILL_INPUT=y
# CONFIG_NET_9P is not set

#
# Device Drivers
#

#
# Generic Driver Options
#
CONFIG_UEVENT_HELPER_PATH=""
# CONFIG_DEVTMPFS is not set
CONFIG_STANDALONE=y
CONFIG_PREVENT_FIRMWARE_BUILD=y
CONFIG_FW_LOADER=y
# CONFIG_FIRMWARE_IN_KERNEL is not set
CONFIG_EXTRA_FIRMWARE=""
# CONFIG_DEBUG_DRIVER is not set
# CONFIG_DEBUG_DEVRES is not set
# CONFIG_SYS_HYPERVISOR is not set
CONFIG_CONNECTOR=m
# CONFIG_MTD is not set
# CONFIG_PARPORT is not set
CONFIG_PNP=y
# CONFIG_PNP_DEBUG_MESSAGES is not set

#
# Protocols
#
CONFIG_ISAPNP=y
CONFIG_PNPBIOS=y
CONFIG_PNPBIOS_PROC_FS=y
CONFIG_PNPACPI=y
CONFIG_BLK_DEV=y
# CONFIG_BLK_DEV_FD is not set
# CONFIG_BLK_DEV_XD is not set
# CONFIG_BLK_CPQ_DA is not set
# CONFIG_BLK_CPQ_CISS_DA is not set
# CONFIG_BLK_DEV_DAC960 is not set
# CONFIG_BLK_DEV_UMEM is not set
# CONFIG_BLK_DEV_COW_COMMON is not set
CONFIG_BLK_DEV_LOOP=m
CONFIG_BLK_DEV_CRYPTOLOOP=m
# CONFIG_BLK_DEV_DRBD is not set
# CONFIG_BLK_DEV_NBD is not set
# CONFIG_BLK_DEV_SX8 is not set
# CONFIG_BLK_DEV_UB is not set
# CONFIG_BLK_DEV_RAM is not set
# CONFIG_CDROM_PKTCDVD is not set
# CONFIG_ATA_OVER_ETH is not set
# CONFIG_BLK_DEV_HD is not set
# CONFIG_MISC_DEVICES is not set
CONFIG_HAVE_IDE=y
# CONFIG_IDE is not set

#
# SCSI device support
#
# CONFIG_RAID_ATTRS is not set
CONFIG_SCSI=y
CONFIG_SCSI_DMA=y
# CONFIG_SCSI_TGT is not set
CONFIG_SCSI_NETLINK=y
# CONFIG_SCSI_PROC_FS is not set

#
# SCSI support type (disk, tape, CD-ROM)
#
CONFIG_BLK_DEV_SD=m
# CONFIG_CHR_DEV_ST is not set
# CONFIG_CHR_DEV_OSST is not set
# CONFIG_BLK_DEV_SR is not set
# CONFIG_CHR_DEV_SG is not set
# CONFIG_CHR_DEV_SCH is not set
CONFIG_SCSI_MULTI_LUN=y
CONFIG_SCSI_CONSTANTS=y
CONFIG_SCSI_LOGGING=y
CONFIG_SCSI_SCAN_ASYNC=y
CONFIG_SCSI_WAIT_SCAN=m

#
# SCSI Transports
#
# CONFIG_SCSI_SPI_ATTRS is not set
CONFIG_SCSI_FC_ATTRS=m
CONFIG_SCSI_ISCSI_ATTRS=m
# CONFIG_SCSI_SAS_ATTRS is not set
# CONFIG_SCSI_SAS_LIBSAS is not set
# CONFIG_SCSI_SRP_ATTRS is not set
# CONFIG_SCSI_LOWLEVEL is not set
# CONFIG_SCSI_DH is not set
# CONFIG_SCSI_OSD_INITIATOR is not set
CONFIG_ATA=y
# CONFIG_ATA_NONSTANDARD is not set
CONFIG_ATA_VERBOSE_ERROR=y
CONFIG_ATA_ACPI=y
CONFIG_SATA_PMP=y
# CONFIG_SATA_AHCI is not set
# CONFIG_SATA_SIL24 is not set
CONFIG_ATA_SFF=y
# CONFIG_SATA_SVW is not set
CONFIG_ATA_PIIX=m
# CONFIG_SATA_MV is not set
# CONFIG_SATA_NV is not set
# CONFIG_PDC_ADMA is not set
# CONFIG_SATA_QSTOR is not set
# CONFIG_SATA_PROMISE is not set
# CONFIG_SATA_SX4 is not set
# CONFIG_SATA_SIL is not set
# CONFIG_SATA_SIS is not set
# CONFIG_SATA_ULI is not set
# CONFIG_SATA_VIA is not set
# CONFIG_SATA_VITESSE is not set
# CONFIG_SATA_INIC162X is not set
# CONFIG_PATA_ACPI is not set
# CONFIG_PATA_ALI is not set
# CONFIG_PATA_AMD is not set
# CONFIG_PATA_ARTOP is not set
# CONFIG_PATA_ATP867X is not set
# CONFIG_PATA_ATIIXP is not set
# CONFIG_PATA_CMD640_PCI is not set
# CONFIG_PATA_CMD64X is not set
# CONFIG_PATA_CS5520 is not set
# CONFIG_PATA_CS5530 is not set
# CONFIG_PATA_CS5535 is not set
# CONFIG_PATA_CS5536 is not set
# CONFIG_PATA_CYPRESS is not set
# CONFIG_PATA_EFAR is not set
# CONFIG_ATA_GENERIC is not set
# CONFIG_PATA_HPT366 is not set
# CONFIG_PATA_HPT37X is not set
# CONFIG_PATA_HPT3X2N is not set
# CONFIG_PATA_HPT3X3 is not set
# CONFIG_PATA_ISAPNP is not set
# CONFIG_PATA_IT821X is not set
# CONFIG_PATA_IT8213 is not set
# CONFIG_PATA_JMICRON is not set
# CONFIG_PATA_LEGACY is not set
# CONFIG_PATA_TRIFLEX is not set
# CONFIG_PATA_MARVELL is not set
# CONFIG_PATA_MPIIX is not set
# CONFIG_PATA_OLDPIIX is not set
# CONFIG_PATA_NETCELL is not set
# CONFIG_PATA_NINJA32 is not set
# CONFIG_PATA_NS87410 is not set
# CONFIG_PATA_NS87415 is not set
# CONFIG_PATA_OPTI is not set
# CONFIG_PATA_OPTIDMA is not set
# CONFIG_PATA_PDC2027X is not set
# CONFIG_PATA_PDC_OLD is not set
# CONFIG_PATA_QDI is not set
# CONFIG_PATA_RADISYS is not set
# CONFIG_PATA_RDC is not set
# CONFIG_PATA_RZ1000 is not set
# CONFIG_PATA_SC1200 is not set
# CONFIG_PATA_SERVERWORKS is not set
# CONFIG_PATA_SIL680 is not set
# CONFIG_PATA_SIS is not set
# CONFIG_PATA_TOSHIBA is not set
# CONFIG_PATA_VIA is not set
# CONFIG_PATA_WINBOND is not set
# CONFIG_PATA_WINBOND_VLB is not set
# CONFIG_PATA_SCH is not set
# CONFIG_MD is not set
# CONFIG_FUSION is not set

#
# IEEE 1394 (FireWire) support
#

#
# You can enable one or both FireWire driver stacks.
#

#
# The newer stack is recommended.
#
# CONFIG_FIREWIRE is not set
# CONFIG_IEEE1394 is not set
# CONFIG_I2O is not set
# CONFIG_MACINTOSH_DRIVERS is not set
CONFIG_NETDEVICES=y
# CONFIG_IFB is not set
# CONFIG_DUMMY is not set
# CONFIG_BONDING is not set
# CONFIG_MACVLAN is not set
# CONFIG_EQUALIZER is not set
# CONFIG_TUN is not set
# CONFIG_VETH is not set
# CONFIG_NET_SB1000 is not set
# CONFIG_ARCNET is not set
# CONFIG_PHYLIB is not set
CONFIG_NET_ETHERNET=y
CONFIG_MII=m
# CONFIG_HAPPYMEAL is not set
# CONFIG_SUNGEM is not set
# CONFIG_CASSINI is not set
# CONFIG_NET_VENDOR_3COM is not set
# CONFIG_LANCE is not set
# CONFIG_NET_VENDOR_SMC is not set
# CONFIG_ENC28J60 is not set
# CONFIG_ETHOC is not set
# CONFIG_NET_VENDOR_RACAL is not set
# CONFIG_DNET is not set
# CONFIG_NET_TULIP is not set
# CONFIG_AT1700 is not set
# CONFIG_DEPCA is not set
# CONFIG_HP100 is not set
# CONFIG_NET_ISA is not set
# CONFIG_IBM_NEW_EMAC_ZMII is not set
# CONFIG_IBM_NEW_EMAC_RGMII is not set
# CONFIG_IBM_NEW_EMAC_TAH is not set
# CONFIG_IBM_NEW_EMAC_EMAC4 is not set
# CONFIG_IBM_NEW_EMAC_NO_FLOW_CTRL is not set
# CONFIG_IBM_NEW_EMAC_MAL_CLR_ICINTSTAT is not set
# CONFIG_IBM_NEW_EMAC_MAL_COMMON_ERR is not set
# CONFIG_NET_PCI is not set
# CONFIG_B44 is not set
# CONFIG_CS89x0 is not set
# CONFIG_KS8842 is not set
# CONFIG_KS8851 is not set
# CONFIG_KS8851_MLL is not set
CONFIG_ATL2=m
# CONFIG_NETDEV_1000 is not set
# CONFIG_NETDEV_10000 is not set
# CONFIG_TR is not set
CONFIG_WLAN=y
# CONFIG_LIBERTAS_THINFIRM is not set
# CONFIG_AIRO is not set
# CONFIG_ATMEL is not set
# CONFIG_AT76C50X_USB is not set
# CONFIG_PRISM54 is not set
# CONFIG_USB_ZD1201 is not set
# CONFIG_USB_NET_RNDIS_WLAN is not set
# CONFIG_RTL8180 is not set
# CONFIG_RTL8187 is not set
# CONFIG_ADM8211 is not set
# CONFIG_MAC80211_HWSIM is not set
# CONFIG_MWL8K is not set
CONFIG_ATH_COMMON=m
# CONFIG_ATH_DEBUG is not set
CONFIG_ATH5K=m
# CONFIG_ATH5K_DEBUG is not set
# CONFIG_ATH9K is not set
# CONFIG_AR9170_USB is not set
# CONFIG_B43 is not set
# CONFIG_B43LEGACY is not set
# CONFIG_HOSTAP is not set
# CONFIG_IPW2100 is not set
# CONFIG_IPW2200 is not set
# CONFIG_IWLWIFI is not set
# CONFIG_LIBERTAS is not set
# CONFIG_HERMES is not set
# CONFIG_P54_COMMON is not set
# CONFIG_RT2X00 is not set
# CONFIG_WL12XX is not set
# CONFIG_ZD1211RW is not set

#
# Enable WiMAX (Networking options) to see the WiMAX drivers
#

#
# USB Network Adapters
#
# CONFIG_USB_CATC is not set
# CONFIG_USB_KAWETH is not set
# CONFIG_USB_PEGASUS is not set
# CONFIG_USB_RTL8150 is not set
# CONFIG_USB_USBNET is not set
# CONFIG_USB_HSO is not set
# CONFIG_WAN is not set
CONFIG_FDDI=y
# CONFIG_DEFXX is not set
# CONFIG_SKFP is not set
CONFIG_HIPPI=y
# CONFIG_ROADRUNNER is not set
CONFIG_PPP=m
CONFIG_PPP_MULTILINK=y
CONFIG_PPP_FILTER=y
# CONFIG_PPP_ASYNC is not set
# CONFIG_PPP_SYNC_TTY is not set
# CONFIG_PPP_DEFLATE is not set
# CONFIG_PPP_BSDCOMP is not set
CONFIG_PPP_MPPE=m
# CONFIG_PPPOE is not set
# CONFIG_PPPOL2TP is not set
# CONFIG_SLIP is not set
CONFIG_SLHC=m
CONFIG_NET_FC=y
# CONFIG_NETCONSOLE is not set
# CONFIG_NETPOLL is not set
# CONFIG_NET_POLL_CONTROLLER is not set
# CONFIG_VMXNET3 is not set
# CONFIG_ISDN is not set
# CONFIG_PHONE is not set

#
# Input device support
#
CONFIG_INPUT=y
# CONFIG_INPUT_FF_MEMLESS is not set
# CONFIG_INPUT_POLLDEV is not set
CONFIG_INPUT_SPARSEKMAP=m

#
# Userland interfaces
#
CONFIG_INPUT_MOUSEDEV=y
CONFIG_INPUT_MOUSEDEV_PSAUX=y
CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
CONFIG_INPUT_JOYDEV=m
CONFIG_INPUT_EVDEV=m
# CONFIG_INPUT_EVBUG is not set

#
# Input Device Drivers
#
CONFIG_INPUT_KEYBOARD=y
# CONFIG_KEYBOARD_ADP5588 is not set
CONFIG_KEYBOARD_ATKBD=y
# CONFIG_QT2160 is not set
# CONFIG_KEYBOARD_LKKBD is not set
# CONFIG_KEYBOARD_LM8323 is not set
# CONFIG_KEYBOARD_MAX7359 is not set
# CONFIG_KEYBOARD_NEWTON is not set
# CONFIG_KEYBOARD_OPENCORES is not set
# CONFIG_KEYBOARD_STOWAWAY is not set
# CONFIG_KEYBOARD_SUNKBD is not set
# CONFIG_KEYBOARD_XTKBD is not set
CONFIG_INPUT_MOUSE=y
CONFIG_MOUSE_PS2=m
CONFIG_MOUSE_PS2_ALPS=y
CONFIG_MOUSE_PS2_LOGIPS2PP=y
CONFIG_MOUSE_PS2_SYNAPTICS=y
CONFIG_MOUSE_PS2_LIFEBOOK=y
CONFIG_MOUSE_PS2_TRACKPOINT=y
# CONFIG_MOUSE_PS2_ELANTECH is not set
# CONFIG_MOUSE_PS2_SENTELIC is not set
# CONFIG_MOUSE_PS2_TOUCHKIT is not set
# CONFIG_MOUSE_SERIAL is not set
# CONFIG_MOUSE_APPLETOUCH is not set
# CONFIG_MOUSE_BCM5974 is not set
# CONFIG_MOUSE_INPORT is not set
# CONFIG_MOUSE_LOGIBM is not set
# CONFIG_MOUSE_PC110PAD is not set
# CONFIG_MOUSE_VSXXXAA is not set
# CONFIG_MOUSE_SYNAPTICS_I2C is not set
CONFIG_INPUT_JOYSTICK=y
# CONFIG_JOYSTICK_ANALOG is not set
# CONFIG_JOYSTICK_A3D is not set
# CONFIG_JOYSTICK_ADI is not set
# CONFIG_JOYSTICK_COBRA is not set
# CONFIG_JOYSTICK_GF2K is not set
# CONFIG_JOYSTICK_GRIP is not set
# CONFIG_JOYSTICK_GRIP_MP is not set
# CONFIG_JOYSTICK_GUILLEMOT is not set
# CONFIG_JOYSTICK_INTERACT is not set
# CONFIG_JOYSTICK_SIDEWINDER is not set
# CONFIG_JOYSTICK_TMDC is not set
# CONFIG_JOYSTICK_IFORCE is not set
# CONFIG_JOYSTICK_WARRIOR is not set
# CONFIG_JOYSTICK_MAGELLAN is not set
# CONFIG_JOYSTICK_SPACEORB is not set
# CONFIG_JOYSTICK_SPACEBALL is not set
# CONFIG_JOYSTICK_STINGER is not set
# CONFIG_JOYSTICK_TWIDJOY is not set
# CONFIG_JOYSTICK_ZHENHUA is not set
# CONFIG_JOYSTICK_JOYDUMP is not set
# CONFIG_JOYSTICK_XPAD is not set
CONFIG_INPUT_TABLET=y
# CONFIG_TABLET_USB_ACECAD is not set
# CONFIG_TABLET_USB_AIPTEK is not set
# CONFIG_TABLET_USB_GTCO is not set
# CONFIG_TABLET_USB_KBTAB is not set
# CONFIG_TABLET_USB_WACOM is not set
CONFIG_INPUT_TOUCHSCREEN=y
# CONFIG_TOUCHSCREEN_ADS7846 is not set
# CONFIG_TOUCHSCREEN_AD7877 is not set
# CONFIG_TOUCHSCREEN_AD7879_I2C is not set
# CONFIG_TOUCHSCREEN_AD7879_SPI is not set
# CONFIG_TOUCHSCREEN_AD7879 is not set
# CONFIG_TOUCHSCREEN_DYNAPRO is not set
# CONFIG_TOUCHSCREEN_EETI is not set
# CONFIG_TOUCHSCREEN_FUJITSU is not set
# CONFIG_TOUCHSCREEN_GUNZE is not set
# CONFIG_TOUCHSCREEN_ELO is not set
# CONFIG_TOUCHSCREEN_WACOM_W8001 is not set
# CONFIG_TOUCHSCREEN_MCS5000 is not set
# CONFIG_TOUCHSCREEN_MTOUCH is not set
# CONFIG_TOUCHSCREEN_INEXIO is not set
# CONFIG_TOUCHSCREEN_MK712 is not set
# CONFIG_TOUCHSCREEN_HTCPEN is not set
# CONFIG_TOUCHSCREEN_PENMOUNT is not set
# CONFIG_TOUCHSCREEN_TOUCHRIGHT is not set
# CONFIG_TOUCHSCREEN_TOUCHWIN is not set
# CONFIG_TOUCHSCREEN_WM97XX is not set
# CONFIG_TOUCHSCREEN_USB_COMPOSITE is not set
# CONFIG_TOUCHSCREEN_TOUCHIT213 is not set
# CONFIG_TOUCHSCREEN_TSC2007 is not set
CONFIG_INPUT_MISC=y
CONFIG_INPUT_PCSPKR=m
# CONFIG_INPUT_APANEL is not set
# CONFIG_INPUT_WISTRON_BTNS is not set
# CONFIG_INPUT_ATLAS_BTNS is not set
# CONFIG_INPUT_ATI_REMOTE is not set
# CONFIG_INPUT_ATI_REMOTE2 is not set
# CONFIG_INPUT_KEYSPAN_REMOTE is not set
# CONFIG_INPUT_POWERMATE is not set
# CONFIG_INPUT_YEALINK is not set
# CONFIG_INPUT_CM109 is not set
# CONFIG_INPUT_UINPUT is not set
# CONFIG_INPUT_WINBOND_CIR is not set

#
# Hardware I/O ports
#
CONFIG_SERIO=y
CONFIG_SERIO_I8042=y
# CONFIG_SERIO_SERPORT is not set
# CONFIG_SERIO_CT82C710 is not set
# CONFIG_SERIO_PCIPS2 is not set
CONFIG_SERIO_LIBPS2=y
CONFIG_SERIO_RAW=m
# CONFIG_SERIO_ALTERA_PS2 is not set
# CONFIG_GAMEPORT is not set

#
# Character devices
#
CONFIG_VT=y
CONFIG_CONSOLE_TRANSLATIONS=y
CONFIG_VT_CONSOLE=y
CONFIG_HW_CONSOLE=y
# CONFIG_VT_HW_CONSOLE_BINDING is not set
# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_NONSTANDARD=y
# CONFIG_COMPUTONE is not set
# CONFIG_ROCKETPORT is not set
# CONFIG_CYCLADES is not set
# CONFIG_DIGIEPCA is not set
# CONFIG_MOXA_INTELLIO is not set
# CONFIG_MOXA_SMARTIO is not set
# CONFIG_ISI is not set
# CONFIG_SYNCLINK is not set
# CONFIG_SYNCLINKMP is not set
# CONFIG_SYNCLINK_GT is not set
# CONFIG_N_HDLC is not set
# CONFIG_RISCOM8 is not set
# CONFIG_SPECIALIX is not set
CONFIG_STALDRV=y
# CONFIG_STALLION is not set
# CONFIG_ISTALLION is not set
# CONFIG_NOZOMI is not set

#
# Serial drivers
#
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_FIX_EARLYCON_MEM=y
CONFIG_SERIAL_8250_PCI=y
CONFIG_SERIAL_8250_PNP=y
CONFIG_SERIAL_8250_NR_UARTS=32
CONFIG_SERIAL_8250_RUNTIME_UARTS=4
CONFIG_SERIAL_8250_EXTENDED=y
CONFIG_SERIAL_8250_MANY_PORTS=y
# CONFIG_SERIAL_8250_FOURPORT is not set
# CONFIG_SERIAL_8250_ACCENT is not set
# CONFIG_SERIAL_8250_BOCA is not set
# CONFIG_SERIAL_8250_EXAR_ST16C554 is not set
# CONFIG_SERIAL_8250_HUB6 is not set
CONFIG_SERIAL_8250_SHARE_IRQ=y
# CONFIG_SERIAL_8250_DETECT_IRQ is not set
CONFIG_SERIAL_8250_RSA=y

#
# Non-8250 serial port support
#
# CONFIG_SERIAL_MAX3100 is not set
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
# CONFIG_SERIAL_JSM is not set
CONFIG_UNIX98_PTYS=y
CONFIG_DEVPTS_MULTIPLE_INSTANCES=y
# CONFIG_LEGACY_PTYS is not set
# CONFIG_IPMI_HANDLER is not set
# CONFIG_HW_RANDOM is not set
CONFIG_NVRAM=m
# CONFIG_DTLK is not set
# CONFIG_R3964 is not set
# CONFIG_APPLICOM is not set
# CONFIG_SONYPI is not set
# CONFIG_MWAVE is not set
# CONFIG_PC8736x_GPIO is not set
# CONFIG_NSC_GPIO is not set
# CONFIG_CS5535_GPIO is not set
# CONFIG_RAW_DRIVER is not set
CONFIG_HPET=y
CONFIG_HPET_MMAP=y
# CONFIG_HANGCHECK_TIMER is not set
# CONFIG_TCG_TPM is not set
# CONFIG_TELCLOCK is not set
CONFIG_DEVPORT=y
CONFIG_I2C=m
CONFIG_I2C_BOARDINFO=y
CONFIG_I2C_COMPAT=y
# CONFIG_I2C_CHARDEV is not set
CONFIG_I2C_HELPER_AUTO=y
CONFIG_I2C_ALGOBIT=m

#
# I2C Hardware Bus support
#

#
# PC SMBus host controller drivers
#
# CONFIG_I2C_ALI1535 is not set
# CONFIG_I2C_ALI1563 is not set
# CONFIG_I2C_ALI15X3 is not set
# CONFIG_I2C_AMD756 is not set
# CONFIG_I2C_AMD8111 is not set
CONFIG_I2C_I801=m
# CONFIG_I2C_ISCH is not set
# CONFIG_I2C_PIIX4 is not set
# CONFIG_I2C_NFORCE2 is not set
# CONFIG_I2C_SIS5595 is not set
# CONFIG_I2C_SIS630 is not set
# CONFIG_I2C_SIS96X is not set
# CONFIG_I2C_VIA is not set
# CONFIG_I2C_VIAPRO is not set

#
# ACPI drivers
#
# CONFIG_I2C_SCMI is not set

#
# I2C system bus drivers (mostly embedded / system-on-chip)
#
# CONFIG_I2C_OCORES is not set
# CONFIG_I2C_SIMTEC is not set

#
# External I2C/SMBus adapter drivers
#
# CONFIG_I2C_PARPORT_LIGHT is not set
# CONFIG_I2C_TAOS_EVM is not set
# CONFIG_I2C_TINY_USB is not set

#
# Other I2C/SMBus bus drivers
#
# CONFIG_I2C_PCA_ISA is not set
# CONFIG_I2C_PCA_PLATFORM is not set
# CONFIG_I2C_STUB is not set
# CONFIG_SCx200_ACB is not set

#
# Miscellaneous I2C Chip support
#
# CONFIG_SENSORS_TSL2550 is not set
# CONFIG_I2C_DEBUG_CORE is not set
# CONFIG_I2C_DEBUG_ALGO is not set
# CONFIG_I2C_DEBUG_BUS is not set
# CONFIG_I2C_DEBUG_CHIP is not set
CONFIG_SPI=y
# CONFIG_SPI_DEBUG is not set
CONFIG_SPI_MASTER=y

#
# SPI Master Controller Drivers
#
# CONFIG_SPI_BITBANG is not set
# CONFIG_SPI_XILINX is not set
# CONFIG_SPI_DESIGNWARE is not set

#
# SPI Protocol Masters
#
# CONFIG_SPI_SPIDEV is not set
# CONFIG_SPI_TLE62X0 is not set

#
# PPS support
#
# CONFIG_PPS is not set
CONFIG_ARCH_WANT_OPTIONAL_GPIOLIB=y
# CONFIG_GPIOLIB is not set
# CONFIG_W1 is not set
CONFIG_POWER_SUPPLY=y
# CONFIG_POWER_SUPPLY_DEBUG is not set
# CONFIG_PDA_POWER is not set
# CONFIG_BATTERY_DS2760 is not set
# CONFIG_BATTERY_DS2782 is not set
# CONFIG_BATTERY_BQ27x00 is not set
# CONFIG_BATTERY_MAX17040 is not set
CONFIG_HWMON=y
# CONFIG_HWMON_VID is not set
# CONFIG_HWMON_DEBUG_CHIP is not set

#
# Native drivers
#
# CONFIG_SENSORS_ABITUGURU is not set
# CONFIG_SENSORS_ABITUGURU3 is not set
# CONFIG_SENSORS_AD7414 is not set
# CONFIG_SENSORS_AD7418 is not set
# CONFIG_SENSORS_ADCXX is not set
# CONFIG_SENSORS_ADM1021 is not set
# CONFIG_SENSORS_ADM1025 is not set
# CONFIG_SENSORS_ADM1026 is not set
# CONFIG_SENSORS_ADM1029 is not set
# CONFIG_SENSORS_ADM1031 is not set
# CONFIG_SENSORS_ADM9240 is not set
# CONFIG_SENSORS_ADT7462 is not set
# CONFIG_SENSORS_ADT7470 is not set
# CONFIG_SENSORS_ADT7473 is not set
# CONFIG_SENSORS_ADT7475 is not set
# CONFIG_SENSORS_K8TEMP is not set
# CONFIG_SENSORS_K10TEMP is not set
# CONFIG_SENSORS_ASB100 is not set
# CONFIG_SENSORS_ATXP1 is not set
# CONFIG_SENSORS_DS1621 is not set
# CONFIG_SENSORS_I5K_AMB is not set
# CONFIG_SENSORS_F71805F is not set
# CONFIG_SENSORS_F71882FG is not set
# CONFIG_SENSORS_F75375S is not set
# CONFIG_SENSORS_FSCHMD is not set
# CONFIG_SENSORS_G760A is not set
# CONFIG_SENSORS_GL518SM is not set
# CONFIG_SENSORS_GL520SM is not set
# CONFIG_SENSORS_CORETEMP is not set
# CONFIG_SENSORS_IT87 is not set
# CONFIG_SENSORS_LM63 is not set
# CONFIG_SENSORS_LM70 is not set
# CONFIG_SENSORS_LM73 is not set
# CONFIG_SENSORS_LM75 is not set
# CONFIG_SENSORS_LM77 is not set
# CONFIG_SENSORS_LM78 is not set
# CONFIG_SENSORS_LM80 is not set
# CONFIG_SENSORS_LM83 is not set
# CONFIG_SENSORS_LM85 is not set
# CONFIG_SENSORS_LM87 is not set
# CONFIG_SENSORS_LM90 is not set
# CONFIG_SENSORS_LM92 is not set
# CONFIG_SENSORS_LM93 is not set
# CONFIG_SENSORS_LTC4215 is not set
# CONFIG_SENSORS_LTC4245 is not set
# CONFIG_SENSORS_LM95241 is not set
# CONFIG_SENSORS_MAX1111 is not set
# CONFIG_SENSORS_MAX1619 is not set
# CONFIG_SENSORS_MAX6650 is not set
# CONFIG_SENSORS_PC87360 is not set
# CONFIG_SENSORS_PC87427 is not set
# CONFIG_SENSORS_PCF8591 is not set
# CONFIG_SENSORS_SIS5595 is not set
# CONFIG_SENSORS_DME1737 is not set
# CONFIG_SENSORS_SMSC47M1 is not set
# CONFIG_SENSORS_SMSC47M192 is not set
# CONFIG_SENSORS_SMSC47B397 is not set
# CONFIG_SENSORS_ADS7828 is not set
# CONFIG_SENSORS_AMC6821 is not set
# CONFIG_SENSORS_THMC50 is not set
# CONFIG_SENSORS_TMP401 is not set
# CONFIG_SENSORS_TMP421 is not set
# CONFIG_SENSORS_VIA_CPUTEMP is not set
# CONFIG_SENSORS_VIA686A is not set
# CONFIG_SENSORS_VT1211 is not set
# CONFIG_SENSORS_VT8231 is not set
# CONFIG_SENSORS_W83781D is not set
# CONFIG_SENSORS_W83791D is not set
# CONFIG_SENSORS_W83792D is not set
# CONFIG_SENSORS_W83793 is not set
# CONFIG_SENSORS_W83L785TS is not set
# CONFIG_SENSORS_W83L786NG is not set
# CONFIG_SENSORS_W83627HF is not set
# CONFIG_SENSORS_W83627EHF is not set
# CONFIG_SENSORS_HDAPS is not set
# CONFIG_SENSORS_LIS3_I2C is not set
# CONFIG_SENSORS_APPLESMC is not set

#
# ACPI drivers
#
# CONFIG_SENSORS_ATK0110 is not set
# CONFIG_SENSORS_LIS3LV02D is not set
CONFIG_THERMAL=m
CONFIG_THERMAL_HWMON=y
CONFIG_WATCHDOG=y
# CONFIG_WATCHDOG_NOWAYOUT is not set

#
# Watchdog Device Drivers
#
# CONFIG_SOFT_WATCHDOG is not set
# CONFIG_ACQUIRE_WDT is not set
# CONFIG_ADVANTECH_WDT is not set
# CONFIG_ALIM1535_WDT is not set
# CONFIG_ALIM7101_WDT is not set
# CONFIG_SC520_WDT is not set
# CONFIG_SBC_FITPC2_WATCHDOG is not set
# CONFIG_EUROTECH_WDT is not set
# CONFIG_IB700_WDT is not set
# CONFIG_IBMASR is not set
# CONFIG_WAFER_WDT is not set
# CONFIG_I6300ESB_WDT is not set
# CONFIG_ITCO_WDT is not set
# CONFIG_IT8712F_WDT is not set
# CONFIG_IT87_WDT is not set
# CONFIG_HP_WATCHDOG is not set
# CONFIG_SC1200_WDT is not set
# CONFIG_PC87413_WDT is not set
# CONFIG_60XX_WDT is not set
# CONFIG_SBC8360_WDT is not set
# CONFIG_SBC7240_WDT is not set
# CONFIG_CPU5_WDT is not set
# CONFIG_SMSC_SCH311X_WDT is not set
# CONFIG_SMSC37B787_WDT is not set
# CONFIG_W83627HF_WDT is not set
# CONFIG_W83697HF_WDT is not set
# CONFIG_W83697UG_WDT is not set
# CONFIG_W83877F_WDT is not set
# CONFIG_W83977F_WDT is not set
# CONFIG_MACHZ_WDT is not set
# CONFIG_SBC_EPX_C3_WATCHDOG is not set

#
# ISA-based Watchdog Cards
#
# CONFIG_PCWATCHDOG is not set
# CONFIG_MIXCOMWD is not set
# CONFIG_WDT is not set

#
# PCI-based Watchdog Cards
#
# CONFIG_PCIPCWATCHDOG is not set
# CONFIG_WDTPCI is not set

#
# USB-based Watchdog Cards
#
# CONFIG_USBPCWATCHDOG is not set
CONFIG_SSB_POSSIBLE=y

#
# Sonics Silicon Backplane
#
# CONFIG_SSB is not set

#
# Multifunction device drivers
#
# CONFIG_MFD_CORE is not set
# CONFIG_MFD_SM501 is not set
# CONFIG_HTC_PASIC3 is not set
# CONFIG_MFD_TMIO is not set
# CONFIG_MFD_WM8400 is not set
# CONFIG_MFD_WM8350_I2C is not set
# CONFIG_MFD_PCF50633 is not set
# CONFIG_MFD_MC13783 is not set
# CONFIG_AB3100_CORE is not set
# CONFIG_EZX_PCAP is not set
# CONFIG_AB4500_CORE is not set
# CONFIG_REGULATOR is not set
CONFIG_MEDIA_SUPPORT=m

#
# Multimedia core support
#
CONFIG_VIDEO_DEV=m
CONFIG_VIDEO_V4L2_COMMON=m
CONFIG_VIDEO_ALLOW_V4L1=y
CONFIG_VIDEO_V4L1_COMPAT=y
CONFIG_DVB_CORE=m
CONFIG_VIDEO_MEDIA=m

#
# Multimedia drivers
#
CONFIG_IR_CORE=m
CONFIG_VIDEO_IR=m
CONFIG_MEDIA_ATTACH=y
CONFIG_MEDIA_TUNER=m
# CONFIG_MEDIA_TUNER_CUSTOMISE is not set
CONFIG_MEDIA_TUNER_SIMPLE=m
CONFIG_MEDIA_TUNER_TDA8290=m
CONFIG_MEDIA_TUNER_TDA18271=m
CONFIG_MEDIA_TUNER_TDA9887=m
CONFIG_MEDIA_TUNER_TEA5761=m
CONFIG_MEDIA_TUNER_TEA5767=m
CONFIG_MEDIA_TUNER_MT20XX=m
CONFIG_MEDIA_TUNER_MT2131=m
CONFIG_MEDIA_TUNER_XC2028=m
CONFIG_MEDIA_TUNER_XC5000=m
CONFIG_MEDIA_TUNER_MXL5005S=m
CONFIG_MEDIA_TUNER_MXL5007T=m
CONFIG_MEDIA_TUNER_MC44S803=m
CONFIG_VIDEO_V4L2=m
CONFIG_VIDEO_V4L1=m
CONFIG_VIDEOBUF_GEN=m
CONFIG_VIDEOBUF_DMA_SG=m
CONFIG_VIDEOBUF_VMALLOC=m
CONFIG_VIDEOBUF_DVB=m
CONFIG_VIDEO_BTCX=m
CONFIG_VIDEO_TVEEPROM=m
CONFIG_VIDEO_TUNER=m
CONFIG_VIDEO_CAPTURE_DRIVERS=y
# CONFIG_VIDEO_ADV_DEBUG is not set
# CONFIG_VIDEO_FIXED_MINOR_RANGES is not set
CONFIG_VIDEO_HELPER_CHIPS_AUTO=y
CONFIG_VIDEO_IR_I2C=m
CONFIG_VIDEO_TVAUDIO=m
CONFIG_VIDEO_TDA7432=m
CONFIG_VIDEO_MSP3400=m
CONFIG_VIDEO_CS5345=m
CONFIG_VIDEO_CS53L32A=m
CONFIG_VIDEO_M52790=m
CONFIG_VIDEO_WM8775=m
CONFIG_VIDEO_WM8739=m
CONFIG_VIDEO_VP27SMPX=m
CONFIG_VIDEO_SAA6588=m
CONFIG_VIDEO_MT9V011=m
CONFIG_VIDEO_SAA711X=m
CONFIG_VIDEO_SAA717X=m
CONFIG_VIDEO_TVP5150=m
CONFIG_VIDEO_CX25840=m
CONFIG_VIDEO_CX2341X=m
CONFIG_VIDEO_SAA7127=m
CONFIG_VIDEO_UPD64031A=m
CONFIG_VIDEO_UPD64083=m
# CONFIG_VIDEO_VIVI is not set
CONFIG_VIDEO_BT848=m
CONFIG_VIDEO_BT848_DVB=y
# CONFIG_VIDEO_PMS is not set
# CONFIG_VIDEO_CPIA is not set
# CONFIG_VIDEO_CPIA2 is not set
# CONFIG_VIDEO_SAA5246A is not set
# CONFIG_VIDEO_SAA5249 is not set
# CONFIG_VIDEO_STRADIS is not set
# CONFIG_VIDEO_ZORAN is not set
CONFIG_VIDEO_SAA7134=m
CONFIG_VIDEO_SAA7134_ALSA=m
# CONFIG_VIDEO_SAA7134_DVB is not set
# CONFIG_VIDEO_MXB is not set
# CONFIG_VIDEO_HEXIUM_ORION is not set
# CONFIG_VIDEO_HEXIUM_GEMINI is not set
CONFIG_VIDEO_CX88=m
CONFIG_VIDEO_CX88_ALSA=m
# CONFIG_VIDEO_CX88_BLACKBIRD is not set
# CONFIG_VIDEO_CX88_DVB is not set
CONFIG_VIDEO_CX23885=m
CONFIG_VIDEO_AU0828=m
CONFIG_VIDEO_IVTV=m
CONFIG_VIDEO_FB_IVTV=m
CONFIG_VIDEO_CX18=m
# CONFIG_VIDEO_SAA7164 is not set
# CONFIG_VIDEO_CAFE_CCIC is not set
# CONFIG_SOC_CAMERA is not set
CONFIG_V4L_USB_DRIVERS=y
CONFIG_USB_VIDEO_CLASS=m
CONFIG_USB_VIDEO_CLASS_INPUT_EVDEV=y
# CONFIG_USB_GSPCA is not set
# CONFIG_VIDEO_PVRUSB2 is not set
# CONFIG_VIDEO_HDPVR is not set
CONFIG_VIDEO_EM28XX=m
CONFIG_VIDEO_EM28XX_ALSA=m
# CONFIG_VIDEO_EM28XX_DVB is not set
CONFIG_VIDEO_CX231XX=m
CONFIG_VIDEO_CX231XX_ALSA=m
# CONFIG_VIDEO_CX231XX_DVB is not set
# CONFIG_VIDEO_USBVISION is not set
# CONFIG_USB_VICAM is not set
# CONFIG_USB_IBMCAM is not set
# CONFIG_USB_KONICAWC is not set
# CONFIG_USB_QUICKCAM_MESSENGER is not set
# CONFIG_USB_ET61X251 is not set
# CONFIG_VIDEO_OVCAMCHIP is not set
# CONFIG_USB_OV511 is not set
# CONFIG_USB_SE401 is not set
# CONFIG_USB_SN9C102 is not set
# CONFIG_USB_STV680 is not set
# CONFIG_USB_ZC0301 is not set
# CONFIG_USB_PWC is not set
CONFIG_USB_PWC_INPUT_EVDEV=y
# CONFIG_USB_ZR364XX is not set
# CONFIG_USB_STKWEBCAM is not set
# CONFIG_USB_S2255 is not set
# CONFIG_RADIO_ADAPTERS is not set
CONFIG_DVB_MAX_ADAPTERS=8
# CONFIG_DVB_DYNAMIC_MINORS is not set
# CONFIG_DVB_CAPTURE_DRIVERS is not set
CONFIG_DVB_BT8XX=m
CONFIG_DVB_STV6110=m
CONFIG_DVB_STV0900=m
CONFIG_DVB_CX24116=m
CONFIG_DVB_DS3000=m
CONFIG_DVB_ZL10353=m
CONFIG_DVB_DIB7000P=m
CONFIG_DVB_TDA10048=m
CONFIG_DVB_LGDT330X=m
CONFIG_DVB_S5H1409=m
CONFIG_DVB_AU8522=m
CONFIG_DVB_S5H1411=m
CONFIG_DVB_LNBP21=m
CONFIG_DAB=y
# CONFIG_USB_DABUSB is not set

#
# Graphics support
#
CONFIG_AGP=m
# CONFIG_AGP_ALI is not set
# CONFIG_AGP_ATI is not set
# CONFIG_AGP_AMD is not set
# CONFIG_AGP_AMD64 is not set
CONFIG_AGP_INTEL=m
# CONFIG_AGP_NVIDIA is not set
# CONFIG_AGP_SIS is not set
# CONFIG_AGP_SWORKS is not set
# CONFIG_AGP_VIA is not set
# CONFIG_AGP_EFFICEON is not set
CONFIG_VGA_ARB=y
CONFIG_DRM=m
CONFIG_DRM_KMS_HELPER=m
CONFIG_DRM_TTM=m
# CONFIG_DRM_TDFX is not set
# CONFIG_DRM_R128 is not set
CONFIG_DRM_RADEON=m
# CONFIG_DRM_I810 is not set
# CONFIG_DRM_I830 is not set
CONFIG_DRM_I915=m
# CONFIG_DRM_I915_KMS is not set
# CONFIG_DRM_MGA is not set
# CONFIG_DRM_SIS is not set
# CONFIG_DRM_VIA is not set
# CONFIG_DRM_SAVAGE is not set
CONFIG_VGASTATE=m
CONFIG_VIDEO_OUTPUT_CONTROL=m
CONFIG_FB=y
CONFIG_FIRMWARE_EDID=y
CONFIG_FB_DDC=m
CONFIG_FB_BOOT_VESA_SUPPORT=y
CONFIG_FB_CFB_FILLRECT=y
CONFIG_FB_CFB_COPYAREA=y
CONFIG_FB_CFB_IMAGEBLIT=y
# CONFIG_FB_CFB_REV_PIXELS_IN_BYTE is not set
# CONFIG_FB_SYS_FILLRECT is not set
# CONFIG_FB_SYS_COPYAREA is not set
# CONFIG_FB_SYS_IMAGEBLIT is not set
# CONFIG_FB_FOREIGN_ENDIAN is not set
# CONFIG_FB_SYS_FOPS is not set
CONFIG_FB_SVGALIB=m
# CONFIG_FB_MACMODES is not set
CONFIG_FB_BACKLIGHT=y
CONFIG_FB_MODE_HELPERS=y
CONFIG_FB_TILEBLITTING=y

#
# Frame buffer hardware drivers
#
CONFIG_FB_CIRRUS=m
CONFIG_FB_PM2=m
CONFIG_FB_PM2_FIFO_DISCONNECT=y
CONFIG_FB_CYBER2000=m
# CONFIG_FB_ARC is not set
# CONFIG_FB_ASILIANT is not set
# CONFIG_FB_IMSTT is not set
CONFIG_FB_VGA16=m
CONFIG_FB_UVESA=m
CONFIG_FB_VESA=y
CONFIG_FB_EFI=y
# CONFIG_FB_N411 is not set
CONFIG_FB_HGA=m
# CONFIG_FB_HGA_ACCEL is not set
CONFIG_FB_S1D13XXX=m
CONFIG_FB_NVIDIA=m
CONFIG_FB_NVIDIA_I2C=y
# CONFIG_FB_NVIDIA_DEBUG is not set
CONFIG_FB_NVIDIA_BACKLIGHT=y
# CONFIG_FB_RIVA is not set
CONFIG_FB_I810=m
# CONFIG_FB_I810_GTF is not set
CONFIG_FB_LE80578=m
# CONFIG_FB_CARILLO_RANCH is not set
CONFIG_FB_MATROX=m
CONFIG_FB_MATROX_MILLENIUM=y
CONFIG_FB_MATROX_MYSTIQUE=y
CONFIG_FB_MATROX_G=y
CONFIG_FB_MATROX_I2C=m
# CONFIG_FB_MATROX_MAVEN is not set
CONFIG_FB_RADEON=m
CONFIG_FB_RADEON_I2C=y
CONFIG_FB_RADEON_BACKLIGHT=y
# CONFIG_FB_RADEON_DEBUG is not set
CONFIG_FB_ATY128=m
CONFIG_FB_ATY128_BACKLIGHT=y
CONFIG_FB_ATY=m
CONFIG_FB_ATY_CT=y
CONFIG_FB_ATY_GENERIC_LCD=y
CONFIG_FB_ATY_GX=y
CONFIG_FB_ATY_BACKLIGHT=y
CONFIG_FB_S3=m
CONFIG_FB_SAVAGE=m
CONFIG_FB_SAVAGE_I2C=y
# CONFIG_FB_SAVAGE_ACCEL is not set
CONFIG_FB_SIS=m
CONFIG_FB_SIS_300=y
CONFIG_FB_SIS_315=y
CONFIG_FB_VIA=m
CONFIG_FB_NEOMAGIC=m
CONFIG_FB_KYRO=m
CONFIG_FB_3DFX=m
# CONFIG_FB_3DFX_ACCEL is not set
CONFIG_FB_3DFX_I2C=y
CONFIG_FB_VOODOO1=m
CONFIG_FB_VT8623=m
CONFIG_FB_TRIDENT=m
CONFIG_FB_ARK=m
CONFIG_FB_PM3=m
# CONFIG_FB_CARMINE is not set
CONFIG_FB_GEODE=y
CONFIG_FB_GEODE_LX=m
CONFIG_FB_GEODE_GX=m
CONFIG_FB_GEODE_GX1=m
# CONFIG_FB_VIRTUAL is not set
# CONFIG_FB_METRONOME is not set
CONFIG_FB_MB862XX=m
CONFIG_FB_MB862XX_PCI_GDC=y
# CONFIG_FB_BROADSHEET is not set
CONFIG_BACKLIGHT_LCD_SUPPORT=y
# CONFIG_LCD_CLASS_DEVICE is not set
CONFIG_BACKLIGHT_CLASS_DEVICE=y
# CONFIG_BACKLIGHT_GENERIC is not set
# CONFIG_BACKLIGHT_PROGEAR is not set
# CONFIG_BACKLIGHT_MBP_NVIDIA is not set
# CONFIG_BACKLIGHT_SAHARA is not set

#
# Display device support
#
# CONFIG_DISPLAY_SUPPORT is not set

#
# Console display driver support
#
CONFIG_VGA_CONSOLE=y
# CONFIG_VGACON_SOFT_SCROLLBACK is not set
# CONFIG_MDA_CONSOLE is not set
CONFIG_DUMMY_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE=y
# CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY is not set
CONFIG_FRAMEBUFFER_CONSOLE_ROTATION=y
# CONFIG_FONTS is not set
CONFIG_FONT_8x8=y
CONFIG_FONT_8x16=y
# CONFIG_LOGO is not set
CONFIG_SOUND=m
CONFIG_SOUND_OSS_CORE=y
CONFIG_SOUND_OSS_CORE_PRECLAIM=y
CONFIG_SND=m
CONFIG_SND_TIMER=m
CONFIG_SND_PCM=m
CONFIG_SND_HWDEP=m
CONFIG_SND_RAWMIDI=m
CONFIG_SND_JACK=y
CONFIG_SND_SEQUENCER=m
# CONFIG_SND_SEQ_DUMMY is not set
CONFIG_SND_OSSEMUL=y
CONFIG_SND_MIXER_OSS=m
CONFIG_SND_PCM_OSS=m
CONFIG_SND_PCM_OSS_PLUGINS=y
# CONFIG_SND_SEQUENCER_OSS is not set
CONFIG_SND_HRTIMER=m
CONFIG_SND_SEQ_HRTIMER_DEFAULT=y
# CONFIG_SND_DYNAMIC_MINORS is not set
CONFIG_SND_SUPPORT_OLD_API=y
CONFIG_SND_VERBOSE_PROCFS=y
# CONFIG_SND_VERBOSE_PRINTK is not set
# CONFIG_SND_DEBUG is not set
CONFIG_SND_VMASTER=y
CONFIG_SND_DMA_SGBUF=y
CONFIG_SND_RAWMIDI_SEQ=m
CONFIG_SND_OPL3_LIB_SEQ=m
# CONFIG_SND_OPL4_LIB_SEQ is not set
# CONFIG_SND_SBAWE_SEQ is not set
CONFIG_SND_EMU10K1_SEQ=m
CONFIG_SND_MPU401_UART=m
CONFIG_SND_OPL3_LIB=m
CONFIG_SND_VX_LIB=m
CONFIG_SND_AC97_CODEC=m
CONFIG_SND_DRIVERS=y
CONFIG_SND_PCSP=m
CONFIG_SND_DUMMY=m
CONFIG_SND_VIRMIDI=m
# CONFIG_SND_MTPAV is not set
# CONFIG_SND_SERIAL_U16550 is not set
# CONFIG_SND_MPU401 is not set
CONFIG_SND_AC97_POWER_SAVE=y
CONFIG_SND_AC97_POWER_SAVE_DEFAULT=0
CONFIG_SND_SB_COMMON=m
CONFIG_SND_SB16_DSP=m
# CONFIG_SND_ISA is not set
CONFIG_SND_PCI=y
CONFIG_SND_AD1889=m
CONFIG_SND_ALS300=m
CONFIG_SND_ALS4000=m
CONFIG_SND_ALI5451=m
CONFIG_SND_ATIIXP=m
CONFIG_SND_ATIIXP_MODEM=m
CONFIG_SND_AU8810=m
CONFIG_SND_AU8820=m
CONFIG_SND_AU8830=m
# CONFIG_SND_AW2 is not set
CONFIG_SND_AZT3328=m
CONFIG_SND_BT87X=m
# CONFIG_SND_BT87X_OVERCLOCK is not set
CONFIG_SND_CA0106=m
CONFIG_SND_CMIPCI=m
CONFIG_SND_OXYGEN_LIB=m
CONFIG_SND_OXYGEN=m
CONFIG_SND_CS4281=m
CONFIG_SND_CS46XX=m
CONFIG_SND_CS46XX_NEW_DSP=y
CONFIG_SND_CS5530=m
CONFIG_SND_CS5535AUDIO=m
CONFIG_SND_CTXFI=m
CONFIG_SND_DARLA20=m
CONFIG_SND_GINA20=m
CONFIG_SND_LAYLA20=m
CONFIG_SND_DARLA24=m
CONFIG_SND_GINA24=m
CONFIG_SND_LAYLA24=m
CONFIG_SND_MONA=m
CONFIG_SND_MIA=m
CONFIG_SND_ECHO3G=m
CONFIG_SND_INDIGO=m
CONFIG_SND_INDIGOIO=m
CONFIG_SND_INDIGODJ=m
CONFIG_SND_INDIGOIOX=m
CONFIG_SND_INDIGODJX=m
CONFIG_SND_EMU10K1=m
CONFIG_SND_EMU10K1X=m
CONFIG_SND_ENS1370=m
CONFIG_SND_ENS1371=m
CONFIG_SND_ES1938=m
CONFIG_SND_ES1968=m
CONFIG_SND_FM801=m
CONFIG_SND_FM801_TEA575X_BOOL=y
CONFIG_SND_FM801_TEA575X=m
CONFIG_SND_HDA_INTEL=m
CONFIG_SND_HDA_HWDEP=y
CONFIG_SND_HDA_RECONFIG=y
CONFIG_SND_HDA_INPUT_BEEP=y
CONFIG_SND_HDA_INPUT_BEEP_MODE=1
CONFIG_SND_HDA_INPUT_JACK=y
# CONFIG_SND_HDA_PATCH_LOADER is not set
CONFIG_SND_HDA_CODEC_REALTEK=y
CONFIG_SND_HDA_CODEC_ANALOG=y
CONFIG_SND_HDA_CODEC_SIGMATEL=y
CONFIG_SND_HDA_CODEC_VIA=y
CONFIG_SND_HDA_CODEC_ATIHDMI=y
CONFIG_SND_HDA_CODEC_NVHDMI=y
CONFIG_SND_HDA_CODEC_INTELHDMI=y
CONFIG_SND_HDA_ELD=y
CONFIG_SND_HDA_CODEC_CIRRUS=y
CONFIG_SND_HDA_CODEC_CONEXANT=y
CONFIG_SND_HDA_CODEC_CA0110=y
CONFIG_SND_HDA_CODEC_CMEDIA=y
CONFIG_SND_HDA_CODEC_SI3054=y
CONFIG_SND_HDA_GENERIC=y
CONFIG_SND_HDA_POWER_SAVE=y
CONFIG_SND_HDA_POWER_SAVE_DEFAULT=0
CONFIG_SND_HDSP=m
CONFIG_SND_HDSPM=m
CONFIG_SND_HIFIER=m
CONFIG_SND_ICE1712=m
CONFIG_SND_ICE1724=m
CONFIG_SND_INTEL8X0=m
CONFIG_SND_INTEL8X0M=m
CONFIG_SND_KORG1212=m
CONFIG_SND_LX6464ES=m
CONFIG_SND_MAESTRO3=m
CONFIG_SND_MIXART=m
CONFIG_SND_NM256=m
CONFIG_SND_PCXHR=m
CONFIG_SND_RIPTIDE=m
CONFIG_SND_RME32=m
CONFIG_SND_RME96=m
CONFIG_SND_RME9652=m
CONFIG_SND_SIS7019=m
CONFIG_SND_SONICVIBES=m
CONFIG_SND_TRIDENT=m
CONFIG_SND_VIA82XX=m
CONFIG_SND_VIA82XX_MODEM=m
CONFIG_SND_VIRTUOSO=m
CONFIG_SND_VX222=m
CONFIG_SND_YMFPCI=m
# CONFIG_SND_SPI is not set
CONFIG_SND_USB=y
CONFIG_SND_USB_AUDIO=m
CONFIG_SND_USB_USX2Y=m
CONFIG_SND_USB_CAIAQ=m
CONFIG_SND_USB_CAIAQ_INPUT=y
CONFIG_SND_USB_US122L=m
# CONFIG_SND_SOC is not set
# CONFIG_SOUND_PRIME is not set
CONFIG_AC97_BUS=m
CONFIG_HID_SUPPORT=y
CONFIG_HID=m
# CONFIG_HIDRAW is not set

#
# USB Input Devices
#
CONFIG_USB_HID=m
CONFIG_HID_PID=y
# CONFIG_USB_HIDDEV is not set

#
# Special HID drivers
#
CONFIG_HID_A4TECH=m
CONFIG_HID_APPLE=m
CONFIG_HID_BELKIN=m
CONFIG_HID_CHERRY=m
CONFIG_HID_CHICONY=m
CONFIG_HID_CYPRESS=m
CONFIG_HID_DRAGONRISE=m
# CONFIG_DRAGONRISE_FF is not set
CONFIG_HID_EZKEY=m
CONFIG_HID_KYE=m
CONFIG_HID_GYRATION=m
CONFIG_HID_TWINHAN=m
CONFIG_HID_KENSINGTON=m
CONFIG_HID_LOGITECH=m
# CONFIG_LOGITECH_FF is not set
# CONFIG_LOGIRUMBLEPAD2_FF is not set
CONFIG_HID_MICROSOFT=m
CONFIG_HID_MONTEREY=m
CONFIG_HID_NTRIG=m
CONFIG_HID_PANTHERLORD=m
# CONFIG_PANTHERLORD_FF is not set
CONFIG_HID_PETALYNX=m
CONFIG_HID_SAMSUNG=m
CONFIG_HID_SONY=m
CONFIG_HID_SUNPLUS=m
CONFIG_HID_GREENASIA=m
# CONFIG_GREENASIA_FF is not set
CONFIG_HID_SMARTJOYPLUS=m
# CONFIG_SMARTJOYPLUS_FF is not set
CONFIG_HID_TOPSEED=m
CONFIG_HID_THRUSTMASTER=m
# CONFIG_THRUSTMASTER_FF is not set
CONFIG_HID_ZEROPLUS=m
# CONFIG_ZEROPLUS_FF is not set
CONFIG_USB_SUPPORT=y
CONFIG_USB_ARCH_HAS_HCD=y
CONFIG_USB_ARCH_HAS_OHCI=y
CONFIG_USB_ARCH_HAS_EHCI=y
CONFIG_USB=m
# CONFIG_USB_DEBUG is not set
CONFIG_USB_ANNOUNCE_NEW_DEVICES=y

#
# Miscellaneous USB options
#
CONFIG_USB_DEVICEFS=y
# CONFIG_USB_DEVICE_CLASS is not set
# CONFIG_USB_DYNAMIC_MINORS is not set
CONFIG_USB_SUSPEND=y
# CONFIG_USB_OTG is not set
# CONFIG_USB_MON is not set
CONFIG_USB_WUSB=m
# CONFIG_USB_WUSB_CBAF is not set

#
# USB Host Controller Drivers
#
# CONFIG_USB_C67X00_HCD is not set
# CONFIG_USB_XHCI_HCD is not set
CONFIG_USB_EHCI_HCD=m
# CONFIG_USB_EHCI_ROOT_HUB_TT is not set
# CONFIG_USB_EHCI_TT_NEWSCHED is not set
# CONFIG_USB_OXU210HP_HCD is not set
# CONFIG_USB_ISP116X_HCD is not set
# CONFIG_USB_ISP1760_HCD is not set
# CONFIG_USB_ISP1362_HCD is not set
# CONFIG_USB_OHCI_HCD is not set
CONFIG_USB_UHCI_HCD=m
# CONFIG_USB_SL811_HCD is not set
# CONFIG_USB_R8A66597_HCD is not set
# CONFIG_USB_WHCI_HCD is not set
# CONFIG_USB_HWA_HCD is not set

#
# Enable Host or Gadget support to see Inventra options
#

#
# USB Device Class drivers
#
# CONFIG_USB_ACM is not set
# CONFIG_USB_PRINTER is not set
# CONFIG_USB_WDM is not set
# CONFIG_USB_TMC is not set

#
# NOTE: USB_STORAGE depends on SCSI but BLK_DEV_SD may
#

#
# also be needed; see USB_STORAGE Help for more info
#
CONFIG_USB_STORAGE=m
# CONFIG_USB_STORAGE_DEBUG is not set
# CONFIG_USB_STORAGE_DATAFAB is not set
# CONFIG_USB_STORAGE_FREECOM is not set
# CONFIG_USB_STORAGE_ISD200 is not set
# CONFIG_USB_STORAGE_USBAT is not set
# CONFIG_USB_STORAGE_SDDR09 is not set
# CONFIG_USB_STORAGE_SDDR55 is not set
# CONFIG_USB_STORAGE_JUMPSHOT is not set
# CONFIG_USB_STORAGE_ALAUDA is not set
# CONFIG_USB_STORAGE_ONETOUCH is not set
# CONFIG_USB_STORAGE_KARMA is not set
# CONFIG_USB_STORAGE_CYPRESS_ATACB is not set
# CONFIG_USB_LIBUSUAL is not set

#
# USB Imaging devices
#
# CONFIG_USB_MDC800 is not set
# CONFIG_USB_MICROTEK is not set

#
# USB port drivers
#
# CONFIG_USB_SERIAL is not set

#
# USB Miscellaneous drivers
#
# CONFIG_USB_EMI62 is not set
# CONFIG_USB_EMI26 is not set
# CONFIG_USB_ADUTUX is not set
# CONFIG_USB_SEVSEG is not set
# CONFIG_USB_RIO500 is not set
# CONFIG_USB_LEGOTOWER is not set
# CONFIG_USB_LCD is not set
# CONFIG_USB_BERRY_CHARGE is not set
# CONFIG_USB_LED is not set
# CONFIG_USB_CYPRESS_CY7C63 is not set
# CONFIG_USB_CYTHERM is not set
# CONFIG_USB_IDMOUSE is not set
# CONFIG_USB_FTDI_ELAN is not set
CONFIG_USB_APPLEDISPLAY=m
# CONFIG_USB_SISUSBVGA is not set
# CONFIG_USB_LD is not set
# CONFIG_USB_TRANCEVIBRATOR is not set
# CONFIG_USB_IOWARRIOR is not set
# CONFIG_USB_TEST is not set
# CONFIG_USB_ISIGHTFW is not set
# CONFIG_USB_VST is not set
# CONFIG_USB_GADGET is not set

#
# OTG and related infrastructure
#
# CONFIG_NOP_USB_XCEIV is not set
CONFIG_UWB=m
# CONFIG_UWB_HWA is not set
# CONFIG_UWB_WHCI is not set
# CONFIG_UWB_WLP is not set
# CONFIG_MMC is not set
# CONFIG_MEMSTICK is not set
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=m

#
# LED drivers
#
# CONFIG_LEDS_ALIX2 is not set
# CONFIG_LEDS_PCA9532 is not set
# CONFIG_LEDS_LP3944 is not set
# CONFIG_LEDS_CLEVO_MAIL is not set
# CONFIG_LEDS_PCA955X is not set
# CONFIG_LEDS_DAC124S085 is not set
# CONFIG_LEDS_BD2802 is not set
# CONFIG_LEDS_INTEL_SS4200 is not set

#
# LED Triggers
#
CONFIG_LEDS_TRIGGERS=y
# CONFIG_LEDS_TRIGGER_TIMER is not set
# CONFIG_LEDS_TRIGGER_HEARTBEAT is not set
# CONFIG_LEDS_TRIGGER_BACKLIGHT is not set
# CONFIG_LEDS_TRIGGER_DEFAULT_ON is not set

#
# iptables trigger is under Netfilter config (LED target)
#
# CONFIG_ACCESSIBILITY is not set
# CONFIG_INFINIBAND is not set
# CONFIG_EDAC is not set
CONFIG_RTC_LIB=y
CONFIG_RTC_CLASS=y
CONFIG_RTC_HCTOSYS=y
CONFIG_RTC_HCTOSYS_DEVICE="rtc0"
# CONFIG_RTC_DEBUG is not set

#
# RTC interfaces
#
CONFIG_RTC_INTF_SYSFS=y
CONFIG_RTC_INTF_PROC=y
CONFIG_RTC_INTF_DEV=y
# CONFIG_RTC_INTF_DEV_UIE_EMUL is not set
# CONFIG_RTC_DRV_TEST is not set

#
# I2C RTC drivers
#
# CONFIG_RTC_DRV_DS1307 is not set
# CONFIG_RTC_DRV_DS1374 is not set
# CONFIG_RTC_DRV_DS1672 is not set
# CONFIG_RTC_DRV_MAX6900 is not set
# CONFIG_RTC_DRV_RS5C372 is not set
# CONFIG_RTC_DRV_ISL1208 is not set
# CONFIG_RTC_DRV_X1205 is not set
# CONFIG_RTC_DRV_PCF8563 is not set
# CONFIG_RTC_DRV_PCF8583 is not set
# CONFIG_RTC_DRV_M41T80 is not set
# CONFIG_RTC_DRV_BQ32K is not set
# CONFIG_RTC_DRV_S35390A is not set
# CONFIG_RTC_DRV_FM3130 is not set
# CONFIG_RTC_DRV_RX8581 is not set
# CONFIG_RTC_DRV_RX8025 is not set

#
# SPI RTC drivers
#
# CONFIG_RTC_DRV_M41T94 is not set
# CONFIG_RTC_DRV_DS1305 is not set
# CONFIG_RTC_DRV_DS1390 is not set
# CONFIG_RTC_DRV_MAX6902 is not set
# CONFIG_RTC_DRV_R9701 is not set
# CONFIG_RTC_DRV_RS5C348 is not set
# CONFIG_RTC_DRV_DS3234 is not set
# CONFIG_RTC_DRV_PCF2123 is not set

#
# Platform RTC drivers
#
CONFIG_RTC_DRV_CMOS=y
# CONFIG_RTC_DRV_DS1286 is not set
# CONFIG_RTC_DRV_DS1511 is not set
# CONFIG_RTC_DRV_DS1553 is not set
# CONFIG_RTC_DRV_DS1742 is not set
# CONFIG_RTC_DRV_STK17TA8 is not set
# CONFIG_RTC_DRV_M48T86 is not set
# CONFIG_RTC_DRV_M48T35 is not set
# CONFIG_RTC_DRV_M48T59 is not set
# CONFIG_RTC_DRV_MSM6242 is not set
# CONFIG_RTC_DRV_BQ4802 is not set
# CONFIG_RTC_DRV_RP5C01 is not set
# CONFIG_RTC_DRV_V3020 is not set

#
# on-CPU RTC drivers
#
# CONFIG_DMADEVICES is not set
# CONFIG_AUXDISPLAY is not set
# CONFIG_UIO is not set

#
# TI VLYNQ
#
# CONFIG_STAGING is not set
CONFIG_X86_PLATFORM_DEVICES=y
# CONFIG_ACER_WMI is not set
# CONFIG_ACERHDF is not set
# CONFIG_ASUS_LAPTOP is not set
# CONFIG_FUJITSU_LAPTOP is not set
# CONFIG_TC1100_WMI is not set
# CONFIG_MSI_LAPTOP is not set
# CONFIG_PANASONIC_LAPTOP is not set
# CONFIG_COMPAL_LAPTOP is not set
# CONFIG_SONY_LAPTOP is not set
# CONFIG_THINKPAD_ACPI is not set
# CONFIG_INTEL_MENLOW is not set
CONFIG_EEEPC_LAPTOP=m
# CONFIG_ACPI_WMI is not set
# CONFIG_ACPI_ASUS is not set
# CONFIG_TOPSTAR_LAPTOP is not set
# CONFIG_ACPI_TOSHIBA is not set
# CONFIG_TOSHIBA_BT_RFKILL is not set
# CONFIG_ACPI_CMPC is not set

#
# Firmware Drivers
#
# CONFIG_EDD is not set
CONFIG_FIRMWARE_MEMMAP=y
# CONFIG_EFI_VARS is not set
# CONFIG_DELL_RBU is not set
# CONFIG_DCDBAS is not set
CONFIG_DMIID=y
CONFIG_ISCSI_IBFT_FIND=y
CONFIG_ISCSI_IBFT=y

#
# File systems
#
CONFIG_EXT2_FS=m
CONFIG_EXT2_FS_XATTR=y
CONFIG_EXT2_FS_POSIX_ACL=y
CONFIG_EXT2_FS_SECURITY=y
# CONFIG_EXT2_FS_XIP is not set
CONFIG_EXT3_FS=m
CONFIG_EXT3_DEFAULTS_TO_ORDERED=y
CONFIG_EXT3_FS_XATTR=y
CONFIG_EXT3_FS_POSIX_ACL=y
CONFIG_EXT3_FS_SECURITY=y
CONFIG_EXT4_FS=m
CONFIG_EXT4_FS_XATTR=y
CONFIG_EXT4_FS_POSIX_ACL=y
CONFIG_EXT4_FS_SECURITY=y
# CONFIG_EXT4_DEBUG is not set
CONFIG_JBD=m
# CONFIG_JBD_DEBUG is not set
CONFIG_JBD2=m
# CONFIG_JBD2_DEBUG is not set
CONFIG_FS_MBCACHE=m
# CONFIG_REISERFS_FS is not set
# CONFIG_JFS_FS is not set
CONFIG_FS_POSIX_ACL=y
# CONFIG_XFS_FS is not set
CONFIG_GFS2_FS=m
CONFIG_GFS2_FS_LOCKING_DLM=y
# CONFIG_OCFS2_FS is not set
# CONFIG_BTRFS_FS is not set
# CONFIG_NILFS2_FS is not set
CONFIG_FILE_LOCKING=y
CONFIG_FSNOTIFY=y
CONFIG_DNOTIFY=y
CONFIG_INOTIFY=y
CONFIG_INOTIFY_USER=y
CONFIG_QUOTA=y
CONFIG_QUOTA_NETLINK_INTERFACE=y
CONFIG_PRINT_QUOTA_WARNING=y
# CONFIG_QFMT_V1 is not set
# CONFIG_QFMT_V2 is not set
CONFIG_QUOTACTL=y
# CONFIG_AUTOFS_FS is not set
# CONFIG_AUTOFS4_FS is not set
CONFIG_FUSE_FS=m
# CONFIG_CUSE is not set
CONFIG_GENERIC_ACL=y

#
# Caches
#
# CONFIG_FSCACHE is not set

#
# CD-ROM/DVD Filesystems
#
# CONFIG_ISO9660_FS is not set
# CONFIG_UDF_FS is not set

#
# DOS/FAT/NT Filesystems
#
CONFIG_FAT_FS=m
CONFIG_MSDOS_FS=m
CONFIG_VFAT_FS=m
CONFIG_FAT_DEFAULT_CODEPAGE=437
CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1"
# CONFIG_NTFS_FS is not set

#
# Pseudo filesystems
#
CONFIG_PROC_FS=y
CONFIG_PROC_KCORE=y
CONFIG_PROC_SYSCTL=y
CONFIG_PROC_PAGE_MONITOR=y
CONFIG_SYSFS=y
CONFIG_TMPFS=y
CONFIG_TMPFS_POSIX_ACL=y
CONFIG_HUGETLBFS=y
CONFIG_HUGETLB_PAGE=y
CONFIG_CONFIGFS_FS=m
# CONFIG_MISC_FILESYSTEMS is not set
# CONFIG_NETWORK_FILESYSTEMS is not set

#
# Partition Types
#
# CONFIG_PARTITION_ADVANCED is not set
CONFIG_MSDOS_PARTITION=y
CONFIG_NLS=y
CONFIG_NLS_DEFAULT="utf8"
CONFIG_NLS_CODEPAGE_437=y
# CONFIG_NLS_CODEPAGE_737 is not set
# CONFIG_NLS_CODEPAGE_775 is not set
CONFIG_NLS_CODEPAGE_850=y
CONFIG_NLS_CODEPAGE_852=y
# CONFIG_NLS_CODEPAGE_855 is not set
# CONFIG_NLS_CODEPAGE_857 is not set
# CONFIG_NLS_CODEPAGE_860 is not set
# CONFIG_NLS_CODEPAGE_861 is not set
# CONFIG_NLS_CODEPAGE_862 is not set
# CONFIG_NLS_CODEPAGE_863 is not set
# CONFIG_NLS_CODEPAGE_864 is not set
# CONFIG_NLS_CODEPAGE_865 is not set
# CONFIG_NLS_CODEPAGE_866 is not set
# CONFIG_NLS_CODEPAGE_869 is not set
# CONFIG_NLS_CODEPAGE_936 is not set
# CONFIG_NLS_CODEPAGE_950 is not set
# CONFIG_NLS_CODEPAGE_932 is not set
# CONFIG_NLS_CODEPAGE_949 is not set
# CONFIG_NLS_CODEPAGE_874 is not set
# CONFIG_NLS_ISO8859_8 is not set
CONFIG_NLS_CODEPAGE_1250=y
# CONFIG_NLS_CODEPAGE_1251 is not set
# CONFIG_NLS_ASCII is not set
CONFIG_NLS_ISO8859_1=y
# CONFIG_NLS_ISO8859_2 is not set
# CONFIG_NLS_ISO8859_3 is not set
# CONFIG_NLS_ISO8859_4 is not set
# CONFIG_NLS_ISO8859_5 is not set
# CONFIG_NLS_ISO8859_6 is not set
# CONFIG_NLS_ISO8859_7 is not set
# CONFIG_NLS_ISO8859_9 is not set
# CONFIG_NLS_ISO8859_13 is not set
# CONFIG_NLS_ISO8859_14 is not set
# CONFIG_NLS_ISO8859_15 is not set
# CONFIG_NLS_KOI8_R is not set
# CONFIG_NLS_KOI8_U is not set
CONFIG_NLS_UTF8=y
CONFIG_DLM=m
# CONFIG_DLM_DEBUG is not set

#
# Kernel hacking
#
CONFIG_TRACE_IRQFLAGS_SUPPORT=y
CONFIG_PRINTK_TIME=y
CONFIG_ENABLE_WARN_DEPRECATED=y
CONFIG_ENABLE_MUST_CHECK=y
CONFIG_FRAME_WARN=1024
CONFIG_MAGIC_SYSRQ=y
CONFIG_STRIP_ASM_SYMS=y
CONFIG_UNUSED_SYMBOLS=y
CONFIG_DEBUG_FS=y
# CONFIG_HEADERS_CHECK is not set
CONFIG_DEBUG_KERNEL=y
# CONFIG_DEBUG_SHIRQ is not set
CONFIG_DETECT_SOFTLOCKUP=y
# CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC is not set
CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC_VALUE=0
CONFIG_DETECT_HUNG_TASK=y
# CONFIG_BOOTPARAM_HUNG_TASK_PANIC is not set
CONFIG_BOOTPARAM_HUNG_TASK_PANIC_VALUE=0
CONFIG_SCHED_DEBUG=y
# CONFIG_SCHEDSTATS is not set
CONFIG_TIMER_STATS=y
# CONFIG_DEBUG_OBJECTS is not set
# CONFIG_DEBUG_SLAB is not set
# CONFIG_DEBUG_KMEMLEAK is not set
# CONFIG_DEBUG_RT_MUTEXES is not set
# CONFIG_RT_MUTEX_TESTER is not set
# CONFIG_DEBUG_SPINLOCK is not set
# CONFIG_DEBUG_MUTEXES is not set
# CONFIG_DEBUG_LOCK_ALLOC is not set
# CONFIG_PROVE_LOCKING is not set
# CONFIG_LOCK_STAT is not set
# CONFIG_DEBUG_SPINLOCK_SLEEP is not set
# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
CONFIG_STACKTRACE=y
# CONFIG_DEBUG_KOBJECT is not set
# CONFIG_DEBUG_HIGHMEM is not set
CONFIG_DEBUG_BUGVERBOSE=y
# CONFIG_DEBUG_INFO is not set
# CONFIG_DEBUG_VM is not set
# CONFIG_DEBUG_VIRTUAL is not set
# CONFIG_DEBUG_WRITECOUNT is not set
CONFIG_DEBUG_MEMORY_INIT=y
# CONFIG_DEBUG_LIST is not set
# CONFIG_DEBUG_SG is not set
# CONFIG_DEBUG_NOTIFIERS is not set
# CONFIG_DEBUG_CREDENTIALS is not set
CONFIG_ARCH_WANT_FRAME_POINTERS=y
# CONFIG_FRAME_POINTER is not set
# CONFIG_BOOT_PRINTK_DELAY is not set
# CONFIG_RCU_TORTURE_TEST is not set
# CONFIG_RCU_CPU_STALL_DETECTOR is not set
# CONFIG_BACKTRACE_SELF_TEST is not set
# CONFIG_DEBUG_BLOCK_EXT_DEVT is not set
# CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
# CONFIG_FAULT_INJECTION is not set
# CONFIG_LATENCYTOP is not set
CONFIG_SYSCTL_SYSCALL_CHECK=y
# CONFIG_DEBUG_PAGEALLOC is not set
CONFIG_USER_STACKTRACE_SUPPORT=y
CONFIG_NOP_TRACER=y
CONFIG_HAVE_FUNCTION_TRACER=y
CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
CONFIG_HAVE_FUNCTION_GRAPH_FP_TEST=y
CONFIG_HAVE_FUNCTION_TRACE_MCOUNT_TEST=y
CONFIG_HAVE_DYNAMIC_FTRACE=y
CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
CONFIG_RING_BUFFER=y
CONFIG_EVENT_TRACING=y
CONFIG_CONTEXT_SWITCH_TRACER=y
CONFIG_TRACING=y
CONFIG_GENERIC_TRACER=y
CONFIG_TRACING_SUPPORT=y
CONFIG_FTRACE=y
# CONFIG_FUNCTION_TRACER is not set
# CONFIG_IRQSOFF_TRACER is not set
# CONFIG_SYSPROF_TRACER is not set
# CONFIG_SCHED_TRACER is not set
# CONFIG_FTRACE_SYSCALLS is not set
CONFIG_BOOT_TRACER=y
CONFIG_BRANCH_PROFILE_NONE=y
# CONFIG_PROFILE_ANNOTATED_BRANCHES is not set
# CONFIG_PROFILE_ALL_BRANCHES is not set
# CONFIG_POWER_TRACER is not set
# CONFIG_KSYM_TRACER is not set
# CONFIG_STACK_TRACER is not set
# CONFIG_KMEMTRACE is not set
# CONFIG_WORKQUEUE_TRACER is not set
CONFIG_BLK_DEV_IO_TRACE=y
# CONFIG_FTRACE_STARTUP_TEST is not set
# CONFIG_MMIOTRACE is not set
# CONFIG_RING_BUFFER_BENCHMARK is not set
# CONFIG_PROVIDE_OHCI1394_DMA_INIT is not set
# CONFIG_DYNAMIC_DEBUG is not set
# CONFIG_DMA_API_DEBUG is not set
# CONFIG_SAMPLES is not set
CONFIG_HAVE_ARCH_KGDB=y
# CONFIG_KGDB is not set
CONFIG_HAVE_ARCH_KMEMCHECK=y
CONFIG_STRICT_DEVMEM=y
CONFIG_X86_VERBOSE_BOOTUP=y
CONFIG_EARLY_PRINTK=y
# CONFIG_EARLY_PRINTK_DBGP is not set
# CONFIG_DEBUG_STACKOVERFLOW is not set
# CONFIG_DEBUG_STACK_USAGE is not set
# CONFIG_DEBUG_PER_CPU_MAPS is not set
# CONFIG_X86_PTDUMP is not set
CONFIG_DEBUG_RODATA=y
# CONFIG_DEBUG_RODATA_TEST is not set
# CONFIG_DEBUG_NX_TEST is not set
# CONFIG_4KSTACKS is not set
CONFIG_DOUBLEFAULT=y
# CONFIG_IOMMU_STRESS is not set
CONFIG_HAVE_MMIOTRACE_SUPPORT=y
CONFIG_IO_DELAY_TYPE_0X80=0
CONFIG_IO_DELAY_TYPE_0XED=1
CONFIG_IO_DELAY_TYPE_UDELAY=2
CONFIG_IO_DELAY_TYPE_NONE=3
CONFIG_IO_DELAY_0X80=y
# CONFIG_IO_DELAY_0XED is not set
# CONFIG_IO_DELAY_UDELAY is not set
# CONFIG_IO_DELAY_NONE is not set
CONFIG_DEFAULT_IO_DELAY_TYPE=0
# CONFIG_DEBUG_BOOT_PARAMS is not set
# CONFIG_CPA_DEBUG is not set
CONFIG_OPTIMIZE_INLINING=y
# CONFIG_DEBUG_STRICT_USER_COPY_CHECKS is not set

#
# Security options
#
CONFIG_KEYS=y
# CONFIG_KEYS_DEBUG_PROC_KEYS is not set
CONFIG_SECURITY=y
CONFIG_SECURITYFS=y
CONFIG_SECURITY_NETWORK=y
CONFIG_SECURITY_NETWORK_XFRM=y
# CONFIG_SECURITY_PATH is not set
# CONFIG_INTEL_TXT is not set
CONFIG_LSM_MMAP_MIN_ADDR=0
CONFIG_SECURITY_SELINUX=y
CONFIG_SECURITY_SELINUX_BOOTPARAM=y
CONFIG_SECURITY_SELINUX_BOOTPARAM_VALUE=0
CONFIG_SECURITY_SELINUX_DISABLE=y
CONFIG_SECURITY_SELINUX_DEVELOP=y
CONFIG_SECURITY_SELINUX_AVC_STATS=y
CONFIG_SECURITY_SELINUX_CHECKREQPROT_VALUE=1
# CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX is not set
# CONFIG_SECURITY_TOMOYO is not set
# CONFIG_IMA is not set
CONFIG_DEFAULT_SECURITY_SELINUX=y
# CONFIG_DEFAULT_SECURITY_SMACK is not set
# CONFIG_DEFAULT_SECURITY_TOMOYO is not set
# CONFIG_DEFAULT_SECURITY_DAC is not set
CONFIG_DEFAULT_SECURITY="selinux"
CONFIG_CRYPTO=y

#
# Crypto core or helper
#
CONFIG_CRYPTO_ALGAPI=y
CONFIG_CRYPTO_ALGAPI2=y
CONFIG_CRYPTO_AEAD=m
CONFIG_CRYPTO_AEAD2=y
CONFIG_CRYPTO_BLKCIPHER=m
CONFIG_CRYPTO_BLKCIPHER2=y
CONFIG_CRYPTO_HASH=y
CONFIG_CRYPTO_HASH2=y
CONFIG_CRYPTO_RNG2=y
CONFIG_CRYPTO_PCOMP=y
CONFIG_CRYPTO_MANAGER=y
CONFIG_CRYPTO_MANAGER2=y
# CONFIG_CRYPTO_GF128MUL is not set
# CONFIG_CRYPTO_NULL is not set
CONFIG_CRYPTO_WORKQUEUE=y
# CONFIG_CRYPTO_CRYPTD is not set
CONFIG_CRYPTO_AUTHENC=m
# CONFIG_CRYPTO_TEST is not set

#
# Authenticated Encryption with Associated Data
#
# CONFIG_CRYPTO_CCM is not set
# CONFIG_CRYPTO_GCM is not set
# CONFIG_CRYPTO_SEQIV is not set

#
# Block modes
#
CONFIG_CRYPTO_CBC=m
# CONFIG_CRYPTO_CTR is not set
# CONFIG_CRYPTO_CTS is not set
CONFIG_CRYPTO_ECB=m
# CONFIG_CRYPTO_LRW is not set
CONFIG_CRYPTO_PCBC=m
# CONFIG_CRYPTO_XTS is not set

#
# Hash modes
#
CONFIG_CRYPTO_HMAC=m
# CONFIG_CRYPTO_XCBC is not set
# CONFIG_CRYPTO_VMAC is not set

#
# Digest
#
CONFIG_CRYPTO_CRC32C=m
# CONFIG_CRYPTO_CRC32C_INTEL is not set
# CONFIG_CRYPTO_GHASH is not set
# CONFIG_CRYPTO_MD4 is not set
CONFIG_CRYPTO_MD5=y
CONFIG_CRYPTO_MICHAEL_MIC=m
# CONFIG_CRYPTO_RMD128 is not set
# CONFIG_CRYPTO_RMD160 is not set
# CONFIG_CRYPTO_RMD256 is not set
# CONFIG_CRYPTO_RMD320 is not set
CONFIG_CRYPTO_SHA1=m
# CONFIG_CRYPTO_SHA256 is not set
# CONFIG_CRYPTO_SHA512 is not set
# CONFIG_CRYPTO_TGR192 is not set
# CONFIG_CRYPTO_WP512 is not set

#
# Ciphers
#
CONFIG_CRYPTO_AES=m
# CONFIG_CRYPTO_AES_586 is not set
# CONFIG_CRYPTO_ANUBIS is not set
CONFIG_CRYPTO_ARC4=m
# CONFIG_CRYPTO_BLOWFISH is not set
# CONFIG_CRYPTO_CAMELLIA is not set
CONFIG_CRYPTO_CAST5=m
# CONFIG_CRYPTO_CAST6 is not set
CONFIG_CRYPTO_DES=m
CONFIG_CRYPTO_FCRYPT=m
# CONFIG_CRYPTO_KHAZAD is not set
# CONFIG_CRYPTO_SALSA20 is not set
# CONFIG_CRYPTO_SALSA20_586 is not set
# CONFIG_CRYPTO_SEED is not set
# CONFIG_CRYPTO_SERPENT is not set
# CONFIG_CRYPTO_TEA is not set
# CONFIG_CRYPTO_TWOFISH is not set
# CONFIG_CRYPTO_TWOFISH_586 is not set

#
# Compression
#
CONFIG_CRYPTO_DEFLATE=m
# CONFIG_CRYPTO_ZLIB is not set
CONFIG_CRYPTO_LZO=m

#
# Random Number Generation
#
# CONFIG_CRYPTO_ANSI_CPRNG is not set
# CONFIG_CRYPTO_HW is not set
CONFIG_HAVE_KVM=y
# CONFIG_VIRTUALIZATION is not set
CONFIG_BINARY_PRINTF=y

#
# Library routines
#
CONFIG_BITREVERSE=y
CONFIG_GENERIC_FIND_FIRST_BIT=y
CONFIG_GENERIC_FIND_NEXT_BIT=y
CONFIG_GENERIC_FIND_LAST_BIT=y
# CONFIG_CRC_CCITT is not set
CONFIG_CRC16=m
CONFIG_CRC_T10DIF=m
# CONFIG_CRC_ITU_T is not set
CONFIG_CRC32=y
# CONFIG_CRC7 is not set
CONFIG_LIBCRC32C=m
CONFIG_AUDIT_GENERIC=y
CONFIG_ZLIB_INFLATE=y
CONFIG_ZLIB_DEFLATE=m
CONFIG_LZO_COMPRESS=m
CONFIG_LZO_DECOMPRESS=y
CONFIG_DECOMPRESS_GZIP=y
CONFIG_DECOMPRESS_BZIP2=y
CONFIG_DECOMPRESS_LZMA=y
CONFIG_DECOMPRESS_LZO=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT=y
CONFIG_HAS_DMA=y
CONFIG_NLATTR=y

Re: s2disk hang update

[Rafael J. Wysocki]

On Tuesday 02 February 2010, Alan Jenkins wrote:
> On 1/2/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> > On Saturday 02 January 2010, Alan Jenkins wrote:
> > Hi,
> >
> >> I've been suffering from s2disk hangs again.  This time, the hangs
> >> were always before the hibernation image was written out.
> >>
> >> They're still frustratingly random.  I just started trying to work out
> >> whether doubling PAGES_FOR_IO makes them go away, but they went away
> >> on their own again.
> >>
> >> I did manage to capture a backtrace with debug info though.  Here it
> >> is for 2.6.33-rc2.  (It has also happened on rc1).  I was able to get
> >> the line numbers (using gdb, e.g.  "info line
> >> *stop_machine_create+0x27"), having built the kernel with debug info.
> >>
> >> [top of trace lost due to screen height]
> >> ? sync_page	(filemap.c:183)
> >> ? wait_on_page_bit	(filemap.c:506)
> >> ? wake_bit_function	(wait.c:174)
> >> ? shrink_page_list	(vmscan.c:696)
> >> ? __delayacct_blkio_end	(delayacct.c:94)
> >> ? finish_wait	(list.h:142)
> >> ? congestion_wait	(backing-dev.c:761)
> >> ? shrink_inactive_list	(vmscan.c:1193)
> >> ? scsi_request_fn	(spinlock.h:306)
> >> ? blk_run_queue	(blk-core.c:434)
> >> ? shrink_zone	(vmscan.c:1484)
> >> ? do_try_to_free_pages	(vmscan.c:1684)
> >> ? try_to_free_pages	(vmscan.c:1848)
> >> ? isolate_pages_global	(vmscan.c:980)
> >> ? __alloc_pages_nodemask	(page_alloc.c:1702)
> >> ? __get_free_pages	(page_alloc.c:1990)
> >> ? copy_process	(fork.c:237)
> >> ? do_fork	(fork.c:1443)
> >> ? rb_erase
> >> ? __switch_to
> >> ? kthread
> >> ? kernel_thread
> >> ? kthread
> >> ? kernel_thread_helper
> >> ? kthreadd
> >> ? kthreadd
> >> ? kernel_thread_helper
> >>
> >> INFO: task s2disk:2174 blocked for more than 120 seconds
> >
> > This looks like we have run out of memory while creating a new kernel thread
> > and we have blocked on I/O while trying to free some space (quite obviously,
> > because the I/O doesn't work at this point).
> 
> For context, the kernel thread being created here is the stop_machine
> thread.  It is created by disable_nonboot_cpus(), called from
> hibernation_snapshot().  See e.g. this hung task backtrace -
> 
> http://picasaweb.google.com/lh/photo/BkKUwZCrQ2ceBIM9ZOh7Ow?feat=directlink
> 
> > I think it should help if you increase PAGES_FOR_IO, then.
> 
> Ok, it's been happening again on 2.6.33-rc6.  Unfortunately increasing
> PAGES_FOR_IO doesn't help.
> 
> I've been using a test patch to make PAGES_FOR_IO tunable at run time.
>  I get the same hang if I increase it by a factor of 10, to 10240:
> 
> # cd /sys/module/kernel/parameters/
> # ls
> consoleblank  initcall_debug  PAGES_FOR_IO  panic  pause_on_oops  SPARE_PAGES
> # echo 10240 > PAGES_FOR_IO
> # echo 2560 > SPARE_PAGES
> # cat SPARE_PAGES
> 2560
> # cat PAGES_FOR_IO
> 10240
> 
> I also added a debug patch to try and understand the calculations with
> PAGES_FOR_IO in hibernate_preallocate_memory().  I still don't really
> understand them and there could easily be errors in my debug patch,
> but the output is interesting.
> 
> Increasing PAGES_FOR_IO by almost 10000 has the expected effect of
> decreasing "max_size" by the same amount.  However it doesn't appear
> to increase the number of free pages at the critical moment.
> 
> PAGES_FOR_IO = 1024:
> http://picasaweb.google.com/lh/photo/DYQGvB_4hvCvVuxZf2ibxg?feat=directlink
> 
> PAGES_FOR_IO = 10240:
> http://picasaweb.google.com/lh/photo/AIkV_ZBwt22nzN-JdOJCWA?feat=directlink
> 
> 
> You may remember that I was originally able to avoid the hang by
> reverting commit 5f8dcc2.  It doesn't revert cleanly any more.
> However, I tried applying my test&debug patches on top of 5f8dcc2~1
> (just before the commit that triggered the hang).  That kernel
> apparently left ~5000 pages free at hibernation time, v.s. ~1200 when
> testing the same scenario on 2.6.33-rc6.  (As before, the number of
> free pages remained the same if I increased PAGES_FOR_IO to 10240).

I think the hang may be avoided by using this patch
http://patchwork.kernel.org/patch/74740/
but the hibernation will fail instead.

Can you please repeat your experiments with the patch below applied and
report back?

Rafael

---
 kernel/power/snapshot.c |   41 +++++++++++++++++++++++++++++++++++++++--
 1 file changed, 39 insertions(+), 2 deletions(-)

Index: linux-2.6/kernel/power/snapshot.c
===================================================================
--- linux-2.6.orig/kernel/power/snapshot.c
+++ linux-2.6/kernel/power/snapshot.c
@@ -1179,6 +1179,10 @@ static void free_unnecessary_pages(void)
 		to_free_normal -= save_highmem - alloc_highmem;
 	}
 
+	printk(KERN_CONT
+		"Freeing %lu normal and %lu highmem preallocated pages\n",
+		to_free_normal, to_free_highmem);
+
 	memory_bm_position_reset(&copy_bm);
 
 	while (to_free_normal > 0 && to_free_highmem > 0) {
@@ -1300,8 +1304,16 @@ int hibernate_preallocate_memory(void)
 	/* Compute the maximum number of saveable pages to leave in memory. */
 	max_size = (count - (size + PAGES_FOR_IO)) / 2 - 2 * SPARE_PAGES;
 	size = DIV_ROUND_UP(image_size, PAGE_SIZE);
+
+	printk(KERN_CONT "Requested image size: %lu pages\n", size);
+
 	if (size > max_size)
 		size = max_size;
+
+	printk(KERN_CONT
+		"count = %lu, highmem = %lu, max_size = %lu, saveable = %lu\n",
+		count, highmem, max_size, saveable);
+
 	/*
 	 * If the maximum is not less than the current number of saveable pages
 	 * in memory, allocate page frames for the image and we're done.
@@ -1312,10 +1324,14 @@ int hibernate_preallocate_memory(void)
 		goto out;
 	}
 
+	printk(KERN_CONT "Target image size: %lu pages\n", size);
+
 	/* Estimate the minimum size of the image. */
 	pages = minimum_image_size(saveable);
-	if (size < pages)
-		size = min_t(unsigned long, pages, max_size);
+	/* if (size < pages)
+		size = min_t(unsigned long, pages, max_size); */
+
+	printk(KERN_CONT "Minimum image size: %lu pages\n", pages);
 
 	/*
 	 * Let the memory management subsystem know that we're going to need a
@@ -1325,6 +1341,9 @@ int hibernate_preallocate_memory(void)
 	 */
 	shrink_all_memory(saveable - size);
 
+	pages = minimum_image_size(count_data_pages() + count_highmem_pages());
+	printk(KERN_CONT "Minimum image size: %lu pages\n", pages);
+
 	/*
 	 * The number of saveable pages in memory was too high, so apply some
 	 * pressure to decrease it.  First, make room for the largest possible
@@ -1334,17 +1353,35 @@ int hibernate_preallocate_memory(void)
 	 */
 	pages_highmem = preallocate_image_highmem(highmem / 2);
 	alloc = (count - max_size) - pages_highmem;
+
+	printk(KERN_CONT "pages_highmem = %lu, alloc = %lu\n",
+		pages_highmem, alloc);
+
 	pages = preallocate_image_memory(alloc);
 	if (pages < alloc)
 		goto err_out;
+
+	printk(KERN_CONT "pages = %lu\n", pages);
+
 	size = max_size - size;
 	alloc = size;
+
 	size = preallocate_highmem_fraction(size, highmem, count);
+
+	printk(KERN_CONT "alloc_highmem = %lu, alloc = %lu\n", size, alloc);
+
 	pages_highmem += size;
 	alloc -= size;
 	pages += preallocate_image_memory(alloc);
+
+	printk(KERN_CONT "pages = %lu\n", pages);
+
 	pages += pages_highmem;
 
+	printk(KERN_CONT
+		"pages = %lu, pages_highmem = %lu, count - pages = %lu\n",
+		pages, pages_highmem, count - pages);
+
 	/*
 	 * We only need as many page frames for the image as there are saveable
 	 * pages in memory, but we have allocated more.  Release the excessive

Re: s2disk hang update

[Rafael J. Wysocki]

On Tuesday 02 February 2010, Alan Jenkins wrote:
> On 1/2/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> > On Saturday 02 January 2010, Alan Jenkins wrote:
> > Hi,
> >
> >> I've been suffering from s2disk hangs again.  This time, the hangs
> >> were always before the hibernation image was written out.
> >>
> >> They're still frustratingly random.  I just started trying to work out
> >> whether doubling PAGES_FOR_IO makes them go away, but they went away
> >> on their own again.
> >>
> >> I did manage to capture a backtrace with debug info though.  Here it
> >> is for 2.6.33-rc2.  (It has also happened on rc1).  I was able to get
> >> the line numbers (using gdb, e.g.  "info line
> >> *stop_machine_create+0x27"), having built the kernel with debug info.
> >>
> >> [top of trace lost due to screen height]
> >> ? sync_page	(filemap.c:183)
> >> ? wait_on_page_bit	(filemap.c:506)
> >> ? wake_bit_function	(wait.c:174)
> >> ? shrink_page_list	(vmscan.c:696)
> >> ? __delayacct_blkio_end	(delayacct.c:94)
> >> ? finish_wait	(list.h:142)
> >> ? congestion_wait	(backing-dev.c:761)
> >> ? shrink_inactive_list	(vmscan.c:1193)
> >> ? scsi_request_fn	(spinlock.h:306)
> >> ? blk_run_queue	(blk-core.c:434)
> >> ? shrink_zone	(vmscan.c:1484)
> >> ? do_try_to_free_pages	(vmscan.c:1684)
> >> ? try_to_free_pages	(vmscan.c:1848)
> >> ? isolate_pages_global	(vmscan.c:980)
> >> ? __alloc_pages_nodemask	(page_alloc.c:1702)
> >> ? __get_free_pages	(page_alloc.c:1990)
> >> ? copy_process	(fork.c:237)
> >> ? do_fork	(fork.c:1443)
> >> ? rb_erase
> >> ? __switch_to
> >> ? kthread
> >> ? kernel_thread
> >> ? kthread
> >> ? kernel_thread_helper
> >> ? kthreadd
> >> ? kthreadd
> >> ? kernel_thread_helper
> >>
> >> INFO: task s2disk:2174 blocked for more than 120 seconds
> >
> > This looks like we have run out of memory while creating a new kernel thread
> > and we have blocked on I/O while trying to free some space (quite obviously,
> > because the I/O doesn't work at this point).
> 
> For context, the kernel thread being created here is the stop_machine
> thread.  It is created by disable_nonboot_cpus(), called from
> hibernation_snapshot().  See e.g. this hung task backtrace -
> 
> http://picasaweb.google.com/lh/photo/BkKUwZCrQ2ceBIM9ZOh7Ow?feat=directlink
> 
> > I think it should help if you increase PAGES_FOR_IO, then.
> 
> Ok, it's been happening again on 2.6.33-rc6.  Unfortunately increasing
> PAGES_FOR_IO doesn't help.
> 
> I've been using a test patch to make PAGES_FOR_IO tunable at run time.
>  I get the same hang if I increase it by a factor of 10, to 10240:
> 
> # cd /sys/module/kernel/parameters/
> # ls
> consoleblank  initcall_debug  PAGES_FOR_IO  panic  pause_on_oops  SPARE_PAGES
> # echo 10240 > PAGES_FOR_IO
> # echo 2560 > SPARE_PAGES
> # cat SPARE_PAGES
> 2560
> # cat PAGES_FOR_IO
> 10240
> 
> I also added a debug patch to try and understand the calculations with
> PAGES_FOR_IO in hibernate_preallocate_memory().  I still don't really
> understand them and there could easily be errors in my debug patch,
> but the output is interesting.
> 
> Increasing PAGES_FOR_IO by almost 10000 has the expected effect of
> decreasing "max_size" by the same amount.  However it doesn't appear
> to increase the number of free pages at the critical moment.
> 
> PAGES_FOR_IO = 1024:
> http://picasaweb.google.com/lh/photo/DYQGvB_4hvCvVuxZf2ibxg?feat=directlink
> 
> PAGES_FOR_IO = 10240:
> http://picasaweb.google.com/lh/photo/AIkV_ZBwt22nzN-JdOJCWA?feat=directlink
> 
> 
> You may remember that I was originally able to avoid the hang by
> reverting commit 5f8dcc2.  It doesn't revert cleanly any more.
> However, I tried applying my test&debug patches on top of 5f8dcc2~1
> (just before the commit that triggered the hang).  That kernel
> apparently left ~5000 pages free at hibernation time, v.s. ~1200 when
> testing the same scenario on 2.6.33-rc6.  (As before, the number of
> free pages remained the same if I increased PAGES_FOR_IO to 10240).

I think the hang may be avoided by using this patch
http://patchwork.kernel.org/patch/74740/
but the hibernation will fail instead.

Can you please repeat your experiments with the patch below applied and
report back?

Rafael

---
 kernel/power/snapshot.c |   41 +++++++++++++++++++++++++++++++++++++++--
 1 file changed, 39 insertions(+), 2 deletions(-)

Index: linux-2.6/kernel/power/snapshot.c
===================================================================
--- linux-2.6.orig/kernel/power/snapshot.c
+++ linux-2.6/kernel/power/snapshot.c
@@ -1179,6 +1179,10 @@ static void free_unnecessary_pages(void)
 		to_free_normal -= save_highmem - alloc_highmem;
 	}
 
+	printk(KERN_CONT
+		"Freeing %lu normal and %lu highmem preallocated pages\n",
+		to_free_normal, to_free_highmem);
+
 	memory_bm_position_reset(&copy_bm);
 
 	while (to_free_normal > 0 && to_free_highmem > 0) {
@@ -1300,8 +1304,16 @@ int hibernate_preallocate_memory(void)
 	/* Compute the maximum number of saveable pages to leave in memory. */
 	max_size = (count - (size + PAGES_FOR_IO)) / 2 - 2 * SPARE_PAGES;
 	size = DIV_ROUND_UP(image_size, PAGE_SIZE);
+
+	printk(KERN_CONT "Requested image size: %lu pages\n", size);
+
 	if (size > max_size)
 		size = max_size;
+
+	printk(KERN_CONT
+		"count = %lu, highmem = %lu, max_size = %lu, saveable = %lu\n",
+		count, highmem, max_size, saveable);
+
 	/*
 	 * If the maximum is not less than the current number of saveable pages
 	 * in memory, allocate page frames for the image and we're done.
@@ -1312,10 +1324,14 @@ int hibernate_preallocate_memory(void)
 		goto out;
 	}
 
+	printk(KERN_CONT "Target image size: %lu pages\n", size);
+
 	/* Estimate the minimum size of the image. */
 	pages = minimum_image_size(saveable);
-	if (size < pages)
-		size = min_t(unsigned long, pages, max_size);
+	/* if (size < pages)
+		size = min_t(unsigned long, pages, max_size); */
+
+	printk(KERN_CONT "Minimum image size: %lu pages\n", pages);
 
 	/*
 	 * Let the memory management subsystem know that we're going to need a
@@ -1325,6 +1341,9 @@ int hibernate_preallocate_memory(void)
 	 */
 	shrink_all_memory(saveable - size);
 
+	pages = minimum_image_size(count_data_pages() + count_highmem_pages());
+	printk(KERN_CONT "Minimum image size: %lu pages\n", pages);
+
 	/*
 	 * The number of saveable pages in memory was too high, so apply some
 	 * pressure to decrease it.  First, make room for the largest possible
@@ -1334,17 +1353,35 @@ int hibernate_preallocate_memory(void)
 	 */
 	pages_highmem = preallocate_image_highmem(highmem / 2);
 	alloc = (count - max_size) - pages_highmem;
+
+	printk(KERN_CONT "pages_highmem = %lu, alloc = %lu\n",
+		pages_highmem, alloc);
+
 	pages = preallocate_image_memory(alloc);
 	if (pages < alloc)
 		goto err_out;
+
+	printk(KERN_CONT "pages = %lu\n", pages);
+
 	size = max_size - size;
 	alloc = size;
+
 	size = preallocate_highmem_fraction(size, highmem, count);
+
+	printk(KERN_CONT "alloc_highmem = %lu, alloc = %lu\n", size, alloc);
+
 	pages_highmem += size;
 	alloc -= size;
 	pages += preallocate_image_memory(alloc);
+
+	printk(KERN_CONT "pages = %lu\n", pages);
+
 	pages += pages_highmem;
 
+	printk(KERN_CONT
+		"pages = %lu, pages_highmem = %lu, count - pages = %lu\n",
+		pages, pages_highmem, count - pages);
+
 	/*
 	 * We only need as many page frames for the image as there are saveable
 	 * pages in memory, but we have allocated more.  Release the excessive

Re: s2disk hang update

[Alan Jenkins]

[-- Attachment #1: Type: text/plain, Size: 4726 bytes --]

On 2/2/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> On Tuesday 02 February 2010, Alan Jenkins wrote:
>> On 1/2/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> > On Saturday 02 January 2010, Alan Jenkins wrote:
>> > Hi,
>> >
>> >> I've been suffering from s2disk hangs again.  This time, the hangs
>> >> were always before the hibernation image was written out.
>> >>
>> >> They're still frustratingly random.  I just started trying to work out
>> >> whether doubling PAGES_FOR_IO makes them go away, but they went away
>> >> on their own again.
>> >>
>> >> I did manage to capture a backtrace with debug info though.  Here it
>> >> is for 2.6.33-rc2.  (It has also happened on rc1).  I was able to get
>> >> the line numbers (using gdb, e.g.  "info line
>> >> *stop_machine_create+0x27"), having built the kernel with debug info.
>> >>
>> >> [top of trace lost due to screen height]
>> >> ? sync_page	(filemap.c:183)
>> >> ? wait_on_page_bit	(filemap.c:506)
>> >> ? wake_bit_function	(wait.c:174)
>> >> ? shrink_page_list	(vmscan.c:696)
>> >> ? __delayacct_blkio_end	(delayacct.c:94)
>> >> ? finish_wait	(list.h:142)
>> >> ? congestion_wait	(backing-dev.c:761)
>> >> ? shrink_inactive_list	(vmscan.c:1193)
>> >> ? scsi_request_fn	(spinlock.h:306)
>> >> ? blk_run_queue	(blk-core.c:434)
>> >> ? shrink_zone	(vmscan.c:1484)
>> >> ? do_try_to_free_pages	(vmscan.c:1684)
>> >> ? try_to_free_pages	(vmscan.c:1848)
>> >> ? isolate_pages_global	(vmscan.c:980)
>> >> ? __alloc_pages_nodemask	(page_alloc.c:1702)
>> >> ? __get_free_pages	(page_alloc.c:1990)
>> >> ? copy_process	(fork.c:237)
>> >> ? do_fork	(fork.c:1443)
>> >> ? rb_erase
>> >> ? __switch_to
>> >> ? kthread
>> >> ? kernel_thread
>> >> ? kthread
>> >> ? kernel_thread_helper
>> >> ? kthreadd
>> >> ? kthreadd
>> >> ? kernel_thread_helper
>> >>
>> >> INFO: task s2disk:2174 blocked for more than 120 seconds
>> >
>> > This looks like we have run out of memory while creating a new kernel
>> > thread
>> > and we have blocked on I/O while trying to free some space (quite
>> > obviously,
>> > because the I/O doesn't work at this point).
>>
>> For context, the kernel thread being created here is the stop_machine
>> thread.  It is created by disable_nonboot_cpus(), called from
>> hibernation_snapshot().  See e.g. this hung task backtrace -
>>
>> http://picasaweb.google.com/lh/photo/BkKUwZCrQ2ceBIM9ZOh7Ow?feat=directlink
>>
>> > I think it should help if you increase PAGES_FOR_IO, then.
>>
>> Ok, it's been happening again on 2.6.33-rc6.  Unfortunately increasing
>> PAGES_FOR_IO doesn't help.
>>
>> I've been using a test patch to make PAGES_FOR_IO tunable at run time.
>>  I get the same hang if I increase it by a factor of 10, to 10240:
>>
>> # cd /sys/module/kernel/parameters/
>> # ls
>> consoleblank  initcall_debug  PAGES_FOR_IO  panic  pause_on_oops
>> SPARE_PAGES
>> # echo 10240 > PAGES_FOR_IO
>> # echo 2560 > SPARE_PAGES
>> # cat SPARE_PAGES
>> 2560
>> # cat PAGES_FOR_IO
>> 10240
>>
>> I also added a debug patch to try and understand the calculations with
>> PAGES_FOR_IO in hibernate_preallocate_memory().  I still don't really
>> understand them and there could easily be errors in my debug patch,
>> but the output is interesting.
>>
>> Increasing PAGES_FOR_IO by almost 10000 has the expected effect of
>> decreasing "max_size" by the same amount.  However it doesn't appear
>> to increase the number of free pages at the critical moment.
>>
>> PAGES_FOR_IO = 1024:
>> http://picasaweb.google.com/lh/photo/DYQGvB_4hvCvVuxZf2ibxg?feat=directlink
>>
>> PAGES_FOR_IO = 10240:
>> http://picasaweb.google.com/lh/photo/AIkV_ZBwt22nzN-JdOJCWA?feat=directlink
>>
>>
>> You may remember that I was originally able to avoid the hang by
>> reverting commit 5f8dcc2.  It doesn't revert cleanly any more.
>> However, I tried applying my test&debug patches on top of 5f8dcc2~1
>> (just before the commit that triggered the hang).  That kernel
>> apparently left ~5000 pages free at hibernation time, v.s. ~1200 when
>> testing the same scenario on 2.6.33-rc6.  (As before, the number of
>> free pages remained the same if I increased PAGES_FOR_IO to 10240).
>
> I think the hang may be avoided by using this patch
> http://patchwork.kernel.org/patch/74740/
> but the hibernation will fail instead.
>
> Can you please repeat your experiments with the patch below applied and
> report back?
>
> Rafael

It causes hibernation to succeed <grin>.

I've attached a dmesg from a successful hibernation with both patches
applied.  And for comparison, a screenshot from a hung hibernation
without the fix, but with the debug patch you sent me.

[In both cases I tested directly on top of v2.6.33-rc6, i.e. no
changes to PAGES_FOR_IO or anything else].

Many thanks!
Alan

[-- Attachment #2: dmesg.txt --]
[-- Type: text/plain, Size: 41556 bytes --]

[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Linux version 2.6.33-rc6eeepc-00001-gd37a207-dirty (alan@alan-desktop) (gcc version 4.4.1 (Ubuntu 4.4.1-4ubuntu9) ) #50 SMP Wed Feb 3 10:25:31 GMT 2010
[    0.000000] BIOS-provided physical RAM map:
[    0.000000]  BIOS-e820: 0000000000000000 - 000000000009fc00 (usable)
[    0.000000]  BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved)
[    0.000000]  BIOS-e820: 00000000000e4000 - 0000000000100000 (reserved)
[    0.000000]  BIOS-e820: 0000000000100000 - 000000001f780000 (usable)
[    0.000000]  BIOS-e820: 000000001f780000 - 000000001f790000 (ACPI data)
[    0.000000]  BIOS-e820: 000000001f790000 - 000000001f7d0000 (ACPI NVS)
[    0.000000]  BIOS-e820: 000000001f7d0000 - 000000001f7de000 (reserved)
[    0.000000]  BIOS-e820: 000000001f7e0000 - 000000001f800000 (reserved)
[    0.000000]  BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
[    0.000000]  BIOS-e820: 00000000fff80000 - 0000000100000000 (reserved)
[    0.000000] Notice: NX (Execute Disable) protection cannot be enabled: non-PAE kernel!
[    0.000000] DMI present.
[    0.000000] AMI BIOS detected: BIOS may corrupt low RAM, working around it.
[    0.000000] e820 update range: 0000000000000000 - 0000000000010000 (usable) ==> (reserved)
[    0.000000] last_pfn = 0x1f780 max_arch_pfn = 0x100000
[    0.000000] MTRR default type: uncachable
[    0.000000] MTRR fixed ranges enabled:
[    0.000000]   00000-9FFFF write-back
[    0.000000]   A0000-DFFFF uncachable
[    0.000000]   E0000-EFFFF write-through
[    0.000000]   F0000-FFFFF write-protect
[    0.000000] MTRR variable ranges enabled:
[    0.000000]   0 base 000000000 mask FE0000000 write-back
[    0.000000]   1 base 01F800000 mask FFF800000 uncachable
[    0.000000]   2 disabled
[    0.000000]   3 disabled
[    0.000000]   4 disabled
[    0.000000]   5 disabled
[    0.000000]   6 disabled
[    0.000000]   7 disabled
[    0.000000] PAT not supported by CPU.
[    0.000000] initial memory mapped : 0 - 01800000
[    0.000000] found SMP MP-table at [c00ff780] ff780
[    0.000000] init_memory_mapping: 0000000000000000-000000001f780000
[    0.000000]  0000000000 - 0000400000 page 4k
[    0.000000]  0000400000 - 001f400000 page 2M
[    0.000000]  001f400000 - 001f780000 page 4k
[    0.000000] kernel direct mapping tables up to 1f780000 @ 15000-1b000
[    0.000000] RAMDISK: 17710000 - 179df578
[    0.000000] ACPI: RSDP 000fbe50 00014 (v00 ACPIAM)
[    0.000000] ACPI: RSDT 1f780000 00034 (v01 A M I  OEMRSDT  03000911 MSFT 00000097)
[    0.000000] ACPI: FACP 1f780200 00081 (v01 A M I  OEMFACP  03000911 MSFT 00000097)
[    0.000000] ACPI: DSDT 1f780400 06069 (v01  A0797 A0797000 00000000 INTL 20060113)
[    0.000000] ACPI: FACS 1f790000 00040
[    0.000000] ACPI: APIC 1f780390 00068 (v01 A M I  OEMAPIC  03000911 MSFT 00000097)
[    0.000000] ACPI: OEMB 1f790040 00046 (v01 A M I  AMI_OEM  03000911 MSFT 00000097)
[    0.000000] ACPI: MCFG 1f786470 0003C (v01 A M I  OEMMCFG  03000911 MSFT 00000097)
[    0.000000] ACPI: Local APIC address 0xfee00000
[    0.000000] 0MB HIGHMEM available.
[    0.000000] 503MB LOWMEM available.
[    0.000000]   mapped low ram: 0 - 1f780000
[    0.000000]   low ram: 0 - 1f780000
[    0.000000]   node 0 low ram: 00000000 - 1f780000
[    0.000000]   node 0 bootmap 00017000 - 0001aef0
[    0.000000] (14 early reservations) ==> bootmem [0000000000 - 001f780000]
[    0.000000]   #0 [0000000000 - 0000001000]   BIOS data page ==> [0000000000 - 0000001000]
[    0.000000]   #1 [0000001000 - 0000002000]    EX TRAMPOLINE ==> [0000001000 - 0000002000]
[    0.000000]   #2 [0001000000 - 00014aa244]    TEXT DATA BSS ==> [0001000000 - 00014aa244]
[    0.000000]   #3 [0017710000 - 00179df578]          RAMDISK ==> [0017710000 - 00179df578]
[    0.000000]   #4 [00014ab000 - 00014b11f4]              BRK ==> [00014ab000 - 00014b11f4]
[    0.000000]   #5 [00000ff790 - 0000100000]    BIOS reserved ==> [00000ff790 - 0000100000]
[    0.000000]   #6 [00000ff780 - 00000ff790]     MP-table mpf ==> [00000ff780 - 00000ff790]
[    0.000000]   #7 [000009fc00 - 00000f0ee0]    BIOS reserved ==> [000009fc00 - 00000f0ee0]
[    0.000000]   #8 [00000f1028 - 00000ff780]    BIOS reserved ==> [00000f1028 - 00000ff780]
[    0.000000]   #9 [00000f0ee0 - 00000f1028]     MP-table mpc ==> [00000f0ee0 - 00000f1028]
[    0.000000]   #10 [0000010000 - 0000011000]       TRAMPOLINE ==> [0000010000 - 0000011000]
[    0.000000]   #11 [0000011000 - 0000015000]      ACPI WAKEUP ==> [0000011000 - 0000015000]
[    0.000000]   #12 [0000015000 - 0000017000]          PGTABLE ==> [0000015000 - 0000017000]
[    0.000000]   #13 [0000017000 - 000001b000]          BOOTMAP ==> [0000017000 - 000001b000]
[    0.000000] Zone PFN ranges:
[    0.000000]   DMA      0x00000010 -> 0x00001000
[    0.000000]   Normal   0x00001000 -> 0x0001f780
[    0.000000]   HighMem  0x0001f780 -> 0x0001f780
[    0.000000] Movable zone start PFN for each node
[    0.000000] early_node_map[2] active PFN ranges
[    0.000000]     0: 0x00000010 -> 0x0000009f
[    0.000000]     0: 0x00000100 -> 0x0001f780
[    0.000000] On node 0 totalpages: 128783
[    0.000000] free_area_init_node: node 0, pgdat c139d3c0, node_mem_map c14b3200
[    0.000000]   DMA zone: 32 pages used for memmap
[    0.000000]   DMA zone: 0 pages reserved
[    0.000000]   DMA zone: 3951 pages, LIFO batch:0
[    0.000000]   Normal zone: 975 pages used for memmap
[    0.000000]   Normal zone: 123825 pages, LIFO batch:31
[    0.000000] Using APIC driver default
[    0.000000] ACPI: PM-Timer IO Port: 0x808
[    0.000000] ACPI: Local APIC address 0xfee00000
[    0.000000] ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled)
[    0.000000] ACPI: IOAPIC (id[0x01] address[0xfec00000] gsi_base[0])
[    0.000000] IOAPIC[0]: apic_id 1, version 32, address 0xfec00000, GSI 0-23
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[    0.000000] ACPI: IRQ0 used by override.
[    0.000000] ACPI: IRQ2 used by override.
[    0.000000] ACPI: IRQ9 used by override.
[    0.000000] Enabling APIC mode:  Flat.  Using 1 I/O APICs
[    0.000000] Using ACPI (MADT) for SMP configuration information
[    0.000000] SMP: Allowing 1 CPUs, 0 hotplug CPUs
[    0.000000] nr_irqs_gsi: 24
[    0.000000] PM: Registered nosave memory: 000000000009f000 - 00000000000a0000
[    0.000000] PM: Registered nosave memory: 00000000000a0000 - 00000000000e4000
[    0.000000] PM: Registered nosave memory: 00000000000e4000 - 0000000000100000
[    0.000000] Allocating PCI resources starting at 1f800000 (gap: 1f800000:df600000)
[    0.000000] setup_percpu: NR_CPUS:32 nr_cpumask_bits:32 nr_cpu_ids:1 nr_node_ids:1
[    0.000000] PERCPU: Embedded 13 pages/cpu @c1c00000 s31000 r0 d22248 u4194304
[    0.000000] pcpu-alloc: s31000 r0 d22248 u4194304 alloc=1*4194304
[    0.000000] pcpu-alloc: [0] 0 
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 127776
[    0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-2.6.33-rc6eeepc-00001-gd37a207-dirty root=/dev/sda2 ro rootfstype=ext4 no_console_suspend i915.modeset=1 resume=/dev/sda2 resume_offset=188416
[    0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes)
[    0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
[    0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
[    0.000000] Enabling fast FPU save and restore... done.
[    0.000000] Enabling unmasked SIMD FPU exception support... done.
[    0.000000] Initializing CPU#0
[    0.000000] Initializing HighMem for node 0 (00000000:00000000)
[    0.000000] Memory: 502560k/515584k available (2389k kernel code, 12216k reserved, 1352k data, 344k init, 0k highmem)
[    0.000000] virtual kernel memory layout:
[    0.000000]     fixmap  : 0xffd57000 - 0xfffff000   (2720 kB)
[    0.000000]     pkmap   : 0xff400000 - 0xff800000   (4096 kB)
[    0.000000]     vmalloc : 0xdff80000 - 0xff3fe000   ( 500 MB)
[    0.000000]     lowmem  : 0xc0000000 - 0xdf780000   ( 503 MB)
[    0.000000]       .init : 0xc13a8000 - 0xc13fe000   ( 344 kB)
[    0.000000]       .data : 0xc12556a3 - 0xc13a776c   (1352 kB)
[    0.000000]       .text : 0xc1000000 - 0xc12556a3   (2389 kB)
[    0.000000] Checking if this processor honours the WP bit even in supervisor mode...Ok.
[    0.000000] Hierarchical RCU implementation.
[    0.000000] NR_IRQS:1280
[    0.000000] Console: colour VGA+ 80x25
[    0.000000] console [tty0] enabled
[    0.000000] Fast TSC calibration using PIT
[    0.000000] Detected 630.104 MHz processor.
[    0.008010] Calibrating delay loop (skipped), value calculated using timer frequency.. 1260.20 BogoMIPS (lpj=2520416)
[    0.012105] Security Framework initialized
[    0.012211] SELinux:  Disabled at boot.
[    0.012334] Mount-cache hash table entries: 512
[    0.012751] Initializing cgroup subsys ns
[    0.012849] Initializing cgroup subsys cpuacct
[    0.012949] Initializing cgroup subsys devices
[    0.013045] Initializing cgroup subsys freezer
[    0.013140] Initializing cgroup subsys net_cls
[    0.013303] mce: CPU supports 5 MCE banks
[    0.013412] CPU0: Thermal monitoring enabled (TM1)
[    0.013528] Performance Events: p6 PMU driver.
[    0.013691] ... version:                0
[    0.013784] ... bit width:              32
[    0.013878] ... generic registers:      2
[    0.013970] ... value mask:             00000000ffffffff
[    0.014069] ... max period:             000000007fffffff
[    0.014167] ... fixed-purpose events:   0
[    0.014259] ... event mask:             0000000000000003
[    0.014363] Checking 'hlt' instruction... OK.
[    0.028815] SMP alternatives: switching to UP code
[    0.034674] Freeing SMP alternatives: 11k freed
[    0.034781] ACPI: Core revision 20091214
[    0.064698] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1
[    0.106993] CPU0: Intel(R) Celeron(R) M processor          900MHz stepping 08
[    0.108000] APIC calibration not consistent with PM-Timer: 136ms instead of 100ms
[    0.108000] APIC delta adjusted to PM-Timer: 437544 (595094)
[    0.108000] Brought up 1 CPUs
[    0.108000] Total of 1 processors activated (1260.20 BogoMIPS).
[    0.108000] NET: Registered protocol family 16
[    0.108000] ACPI: bus type pci registered
[    0.108000] PCI: MMCONFIG for domain 0000 [bus 00-ff] at [mem 0xe0000000-0xefffffff] (base 0xe0000000)
[    0.108000] PCI: not using MMCONFIG
[    0.108000] PCI: PCI BIOS revision 3.00 entry at 0xf0031, last bus=5
[    0.108000] PCI: Using configuration type 1 for base access
[    0.109026] bio: create slab <bio-0> at 0
[    0.113575] ACPI: EC: Look up EC in DSDT
[    0.118729] ACPI: Executed 1 blocks of module-level executable AML code
[    0.140584] ACPI: Interpreter enabled
[    0.140712] ACPI: (supports S0 S3 S4 S5)
[    0.141052] ACPI: Using IOAPIC for interrupt routing
[    0.141313] PCI: MMCONFIG for domain 0000 [bus 00-ff] at [mem 0xe0000000-0xefffffff] (base 0xe0000000)
[    0.149074] PCI: MMCONFIG at [mem 0xe0000000-0xefffffff] reserved in ACPI motherboard resources
[    0.149218] PCI: Using MMCONFIG for extended config space
[    0.167902] ACPI: EC: GPE = 0x18, I/O: command/status = 0x66, data = 0x62
[    0.168736] ACPI: No dock devices found.
[    0.169334] ACPI: PCI Root Bridge [PCI0] (0000:00)
[    0.169515] pci_root PNP0A08:00: ignoring host bridge windows from ACPI; boot with "pci=use_crs" to use them
[    0.170550] pci_root PNP0A08:00: host bridge window [io  0x0000-0x0cf7] (ignored)
[    0.170560] pci_root PNP0A08:00: host bridge window [io  0x0d00-0xffff] (ignored)
[    0.170570] pci_root PNP0A08:00: host bridge window [mem 0x000a0000-0x000bffff] (ignored)
[    0.170580] pci_root PNP0A08:00: host bridge window [mem 0x000d0000-0x000dffff] (ignored)
[    0.170589] pci_root PNP0A08:00: host bridge window [mem 0x1f810000-0xffffffff] (ignored)
[    0.170723] pci 0000:00:02.0: reg 10: [mem 0xf7f00000-0xf7f7ffff]
[    0.170737] pci 0000:00:02.0: reg 14: [io  0xec00-0xec07]
[    0.170750] pci 0000:00:02.0: reg 18: [mem 0xd0000000-0xdfffffff pref]
[    0.170763] pci 0000:00:02.0: reg 1c: [mem 0xf7ec0000-0xf7efffff]
[    0.170834] pci 0000:00:02.1: reg 10: [mem 0xf7f80000-0xf7ffffff]
[    0.170977] pci 0000:00:1b.0: reg 10: [mem 0xf7eb8000-0xf7ebbfff 64bit]
[    0.171047] pci 0000:00:1b.0: PME# supported from D0 D3hot D3cold
[    0.171058] pci 0000:00:1b.0: PME# disabled
[    0.171170] pci 0000:00:1c.0: PME# supported from D0 D3hot D3cold
[    0.171180] pci 0000:00:1c.0: PME# disabled
[    0.171293] pci 0000:00:1c.1: PME# supported from D0 D3hot D3cold
[    0.171302] pci 0000:00:1c.1: PME# disabled
[    0.171416] pci 0000:00:1c.2: PME# supported from D0 D3hot D3cold
[    0.171425] pci 0000:00:1c.2: PME# disabled
[    0.171506] pci 0000:00:1d.0: reg 20: [io  0xe400-0xe41f]
[    0.171588] pci 0000:00:1d.1: reg 20: [io  0xe480-0xe49f]
[    0.171668] pci 0000:00:1d.2: reg 20: [io  0xe800-0xe81f]
[    0.171749] pci 0000:00:1d.3: reg 20: [io  0xe880-0xe89f]
[    0.171829] pci 0000:00:1d.7: reg 10: [mem 0xf7eb7c00-0xf7eb7fff]
[    0.171908] pci 0000:00:1d.7: PME# supported from D0 D3hot D3cold
[    0.171918] pci 0000:00:1d.7: PME# disabled
[    0.172141] pci 0000:00:1f.0: Force enabled HPET at 0xfed00000
[    0.172160] pci 0000:00:1f.0: quirk: [io  0x0800-0x087f] claimed by ICH6 ACPI/GPIO/TCO
[    0.172305] pci 0000:00:1f.0: quirk: [io  0x0480-0x04bf] claimed by ICH6 GPIO
[    0.172414] pci 0000:00:1f.0: LPC Generic IO decode 1 PIO at 0380-03ff
[    0.172565] pci 0000:00:1f.2: reg 10: [io  0x0000-0x0007]
[    0.172579] pci 0000:00:1f.2: reg 14: [io  0x0000-0x0003]
[    0.172593] pci 0000:00:1f.2: reg 18: [io  0x0000-0x0007]
[    0.172606] pci 0000:00:1f.2: reg 1c: [io  0x0000-0x0003]
[    0.172620] pci 0000:00:1f.2: reg 20: [io  0xffa0-0xffaf]
[    0.172662] pci 0000:00:1f.2: PME# supported from D3hot
[    0.172672] pci 0000:00:1f.2: PME# disabled
[    0.172741] pci 0000:00:1f.3: reg 20: [io  0x0400-0x041f]
[    0.172841] pci 0000:00:1c.0: PCI bridge to [bus 04-04]
[    0.173018] pci 0000:03:00.0: reg 10: [mem 0xfbfc0000-0xfbffffff 64bit]
[    0.173067] pci 0000:03:00.0: reg 30: [mem 0xfbfa0000-0xfbfbffff pref]
[    0.173123] pci 0000:03:00.0: PME# supported from D3hot D3cold
[    0.173133] pci 0000:03:00.0: PME# disabled
[    0.173210] pci 0000:00:1c.1: PCI bridge to [bus 03-03]
[    0.173316] pci 0000:00:1c.1:   bridge window [mem 0xfbf00000-0xfbffffff]
[    0.173394] pci 0000:01:00.0: reg 10: [mem 0xfbef0000-0xfbefffff 64bit]
[    0.173562] pci 0000:00:1c.2: PCI bridge to [bus 01-02]
[    0.173666] pci 0000:00:1c.2:   bridge window [mem 0xf8000000-0xfbefffff]
[    0.173682] pci 0000:00:1c.2:   bridge window [mem 0xf0000000-0xf6ffffff 64bit pref]
[    0.173758] pci 0000:00:1e.0: PCI bridge to [bus 05-05] (subtractive decode)
[    0.173901] pci_bus 0000:00: on NUMA node 0
[    0.173922] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
[    0.174451] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P3._PRT]
[    0.174638] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P5._PRT]
[    0.174800] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P6._PRT]
[    0.194578] ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 *5 6 7 10 11 12 14 15)
[    0.195594] ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 7 10 *11 12 14 15)
[    0.196584] ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 6 7 *10 11 12 14 15)
[    0.197582] ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 *7 10 11 12 14 15)
[    0.200368] ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 7 10 11 12 14 15) *0, disabled.
[    0.204886] ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 7 10 11 12 14 15) *0, disabled.
[    0.206009] ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 6 7 10 11 12 14 15) *0, disabled.
[    0.207126] ACPI: PCI Interrupt Link [LNKH] (IRQs *3 4 5 6 7 10 11 12 14 15)
[    0.208071] vgaarb: device added: PCI:0000:00:02.0,decodes=io+mem,owns=io+mem,locks=none
[    0.208228] vgaarb: loaded
[    0.208634] SCSI subsystem initialized
[    0.208875] libata version 3.00 loaded.
[    0.209050] PCI: Using ACPI for IRQ routing
[    0.209208] PCI: pci_cache_line_size set to 64 bytes
[    0.209944] hpet clockevent registered
[    0.209954] HPET: 3 timers in total, 0 timers will be used for per-cpu timer
[    0.210070] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0
[    0.210347] hpet0: 3 comparators, 64-bit 14.318180 MHz counter
[    0.216026] Switching to clocksource tsc
[    0.220095] pnp: PnP ACPI init
[    0.220238] ACPI: bus type pnp registered
[    0.226616] pnp: PnP ACPI: found 13 devices
[    0.226714] ACPI: ACPI bus type pnp unregistered
[    0.226815] PnPBIOS: Disabled by ACPI PNP
[    0.226943] system 00:01: [mem 0xfed13000-0xfed19fff] has been reserved
[    0.227066] system 00:08: [io  0x0380-0x0383] has been reserved
[    0.227170] system 00:08: [io  0x04d0-0x04d1] has been reserved
[    0.227273] system 00:08: [io  0x0800-0x087f] has been reserved
[    0.227377] system 00:08: [io  0x0480-0x04bf] has been reserved
[    0.227481] system 00:08: [mem 0xfed1c000-0xfed1ffff] has been reserved
[    0.227598] system 00:08: [mem 0xfed20000-0xfed8ffff] has been reserved
[    0.227705] system 00:08: [mem 0xfff00000-0xffffffff] could not be reserved
[    0.227839] system 00:09: [mem 0xfec00000-0xfec00fff] could not be reserved
[    0.227948] system 00:09: [mem 0xfee00000-0xfee00fff] has been reserved
[    0.228061] system 00:0a: [mem 0xe0000000-0xefffffff] has been reserved
[    0.228173] system 00:0b: [mem 0xe0000000-0xefffffff] has been reserved
[    0.228288] system 00:0c: [mem 0x00000000-0x0009ffff] could not be reserved
[    0.228396] system 00:0c: [mem 0x000c0000-0x000cffff] could not be reserved
[    0.228506] system 00:0c: [mem 0x000e0000-0x000fffff] could not be reserved
[    0.228615] system 00:0c: [mem 0x00100000-0x1f7fffff] could not be reserved
[    0.263698] pci 0000:00:1c.0: BAR 14: assigned [mem 0x20000000-0x201fffff]
[    0.263833] pci 0000:00:1c.0: BAR 15: assigned [mem 0x20200000-0x203fffff 64bit pref]
[    0.263974] pci 0000:00:1c.1: BAR 15: assigned [mem 0x20400000-0x205fffff 64bit pref]
[    0.264115] pci 0000:00:1c.0: BAR 13: assigned [io  0x1000-0x1fff]
[    0.264220] pci 0000:00:1c.1: BAR 13: assigned [io  0x2000-0x2fff]
[    0.264325] pci 0000:00:1c.2: BAR 13: assigned [io  0x3000-0x3fff]
[    0.264428] pci 0000:00:1c.0: PCI bridge to [bus 04-04]
[    0.264529] pci 0000:00:1c.0:   bridge window [io  0x1000-0x1fff]
[    0.264638] pci 0000:00:1c.0:   bridge window [mem 0x20000000-0x201fffff]
[    0.264748] pci 0000:00:1c.0:   bridge window [mem 0x20200000-0x203fffff 64bit pref]
[    0.264891] pci 0000:00:1c.1: PCI bridge to [bus 03-03]
[    0.264991] pci 0000:00:1c.1:   bridge window [io  0x2000-0x2fff]
[    0.265100] pci 0000:00:1c.1:   bridge window [mem 0xfbf00000-0xfbffffff]
[    0.265209] pci 0000:00:1c.1:   bridge window [mem 0x20400000-0x205fffff 64bit pref]
[    0.265352] pci 0000:00:1c.2: PCI bridge to [bus 01-02]
[    0.265452] pci 0000:00:1c.2:   bridge window [io  0x3000-0x3fff]
[    0.265560] pci 0000:00:1c.2:   bridge window [mem 0xf8000000-0xfbefffff]
[    0.265669] pci 0000:00:1c.2:   bridge window [mem 0xf0000000-0xf6ffffff 64bit pref]
[    0.265812] pci 0000:00:1e.0: PCI bridge to [bus 05-05]
[    0.265910] pci 0000:00:1e.0:   bridge window [io  disabled]
[    0.266014] pci 0000:00:1e.0:   bridge window [mem disabled]
[    0.266116] pci 0000:00:1e.0:   bridge window [mem pref disabled]
[    0.266242] pci 0000:00:1c.0: enabling device (0104 -> 0107)
[    0.266358] pci 0000:00:1c.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[    0.266467] pci 0000:00:1c.0: setting latency timer to 64
[    0.266483] pci 0000:00:1c.1: enabling device (0106 -> 0107)
[    0.266588] pci 0000:00:1c.1: PCI INT B -> GSI 17 (level, low) -> IRQ 17
[    0.266695] pci 0000:00:1c.1: setting latency timer to 64
[    0.266711] pci 0000:00:1c.2: enabling device (0106 -> 0107)
[    0.266816] pci 0000:00:1c.2: PCI INT C -> GSI 18 (level, low) -> IRQ 18
[    0.266922] pci 0000:00:1c.2: setting latency timer to 64
[    0.266936] pci 0000:00:1e.0: setting latency timer to 64
[    0.266947] pci_bus 0000:00: resource 0 [io  0x0000-0xffff]
[    0.266956] pci_bus 0000:00: resource 1 [mem 0x00000000-0xffffffff]
[    0.266965] pci_bus 0000:04: resource 0 [io  0x1000-0x1fff]
[    0.266974] pci_bus 0000:04: resource 1 [mem 0x20000000-0x201fffff]
[    0.266983] pci_bus 0000:04: resource 2 [mem 0x20200000-0x203fffff 64bit pref]
[    0.266993] pci_bus 0000:03: resource 0 [io  0x2000-0x2fff]
[    0.267001] pci_bus 0000:03: resource 1 [mem 0xfbf00000-0xfbffffff]
[    0.267010] pci_bus 0000:03: resource 2 [mem 0x20400000-0x205fffff 64bit pref]
[    0.267020] pci_bus 0000:01: resource 0 [io  0x3000-0x3fff]
[    0.267028] pci_bus 0000:01: resource 1 [mem 0xf8000000-0xfbefffff]
[    0.267037] pci_bus 0000:01: resource 2 [mem 0xf0000000-0xf6ffffff 64bit pref]
[    0.267047] pci_bus 0000:05: resource 3 [io  0x0000-0xffff]
[    0.267055] pci_bus 0000:05: resource 4 [mem 0x00000000-0xffffffff]
[    0.267177] NET: Registered protocol family 2
[    0.267440] IP route cache hash table entries: 4096 (order: 2, 16384 bytes)
[    0.268156] TCP established hash table entries: 16384 (order: 5, 131072 bytes)
[    0.268559] TCP bind hash table entries: 16384 (order: 5, 131072 bytes)
[    0.268922] TCP: Hash tables configured (established 16384 bind 16384)
[    0.269026] TCP reno registered
[    0.269119] UDP hash table entries: 256 (order: 1, 8192 bytes)
[    0.269239] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
[    0.269595] NET: Registered protocol family 1
[    0.269734] pci 0000:00:02.0: Boot video device
[    0.269918] PCI: CLS 16 bytes, default 64
[    0.270059] Unpacking initramfs...
[    0.562540] Freeing initrd memory: 2877k freed
[    0.568362] audit: initializing netlink socket (disabled)
[    0.568506] type=2000 audit(1265194685.567:1): initialized
[    0.569073] HugeTLB registered 4 MB page size, pre-allocated 0 pages
[    0.569436] VFS: Disk quotas dquot_6.5.2
[    0.569601] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[    0.569879] msgmni has been set to 987
[    0.570434] alg: No test for stdrng (krng)
[    0.570628] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 253)
[    0.570768] io scheduler noop registered
[    0.570860] io scheduler deadline registered
[    0.570983] io scheduler cfq registered (default)
[    0.571291] pcieport 0000:00:1c.0: setting latency timer to 64
[    0.571365] pcieport 0000:00:1c.0: irq 24 for MSI/MSI-X
[    0.571555] pcieport 0000:00:1c.1: setting latency timer to 64
[    0.571614] pcieport 0000:00:1c.1: irq 25 for MSI/MSI-X
[    0.571827] pcieport 0000:00:1c.2: setting latency timer to 64
[    0.571885] pcieport 0000:00:1c.2: irq 26 for MSI/MSI-X
[    0.572350] isapnp: Scanning for PnP cards...
[    0.926185] isapnp: No Plug & Play device found
[    0.929540] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[    0.930761] PNP: PS/2 Controller [PNP0303:PS2K,PNP0f13:PS2M] at 0x60,0x64 irq 1,12
[    0.950681] serio: i8042 KBD port at 0x60,0x64 irq 1
[    0.950793] serio: i8042 AUX port at 0x60,0x64 irq 12
[    0.951144] mice: PS/2 mouse device common for all mice
[    0.952026] rtc_cmos 00:03: RTC can wake from S4
[    0.952227] rtc_cmos 00:03: rtc core: registered rtc_cmos as rtc0
[    0.952364] rtc0: alarms up to one month, 114 bytes nvram, hpet irqs
[    0.952499] cpuidle: using governor ladder
[    0.952592] cpuidle: using governor menu
[    0.952689] No iBFT detected.
[    0.953440] TCP cubic registered
[    0.953623] NET: Registered protocol family 10
[    0.954707] lo: Disabled Privacy Extensions
[    0.955432] Mobile IPv6
[    0.955520] NET: Registered protocol family 17
[    0.955655] Using IPI No-Shortcut mode
[    0.971264] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input0
[    0.982615] registered taskstats version 1
[    0.983212] rtc_cmos 00:03: setting system clock to 2010-02-03 10:58:07 UTC (1265194687)
[    0.983486] Freeing unused kernel memory: 344k freed
[    0.984088] Write protecting the kernel text: 2392k
[    0.984234] Write protecting the kernel read-only data: 956k
[    1.067477] ata_piix 0000:00:1f.2: version 2.13
[    1.067536] ata_piix 0000:00:1f.2: PCI INT B -> GSI 19 (level, low) -> IRQ 19
[    1.067682] ata_piix 0000:00:1f.2: MAP [ P0 P2 IDE IDE ]
[    1.068070] ata_piix 0000:00:1f.2: setting latency timer to 64
[    1.068267] scsi0 : ata_piix
[    1.068625] scsi1 : ata_piix
[    1.074712] ata1: SATA max UDMA/133 cmd 0x1f0 ctl 0x3f6 bmdma 0xffa0 irq 14
[    1.074822] ata2: PATA max UDMA/100 cmd 0x170 ctl 0x376 bmdma 0xffa8 irq 15
[    1.244375] ata2.00: CFA: SILICONMOTION SM223AC, , max UDMA/66
[    1.244483] ata2.00: 7815024 sectors, multi 0: LBA 
[    1.260316] ata2.00: configured for UDMA/66
[    1.260715] scsi 1:0:0:0: Direct-Access     ATA      SILICONMOTION SM n/a  PQ: 0 ANSI: 5
[    1.322406] thermal LNXTHERM:01: registered as thermal_zone0
[    1.322567] ACPI: Thermal Zone [TZ00] (52 C)
[    1.782601] sd 1:0:0:0: [sda] 7815024 512-byte logical blocks: (4.00 GB/3.72 GiB)
[    1.782895] sd 1:0:0:0: [sda] Write Protect is off
[    1.782994] sd 1:0:0:0: [sda] Mode Sense: 00 3a 00 00
[    1.783064] sd 1:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[    1.783589]  sda: sda1 sda2
[    1.785813] sd 1:0:0:0: [sda] Attached SCSI disk
[    1.889816] PM: Starting manual resume from disk
[    2.012842] EXT4-fs (sda2): mounted filesystem without journal
[    2.585879] udev: starting version 150
[    3.081396] Atheros(R) L2 Ethernet Driver - version 2.2.3
[    3.081505] Copyright (c) 2007 Atheros Corporation.
[    3.081674] atl2 0000:03:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[    3.081797] atl2 0000:03:00.0: setting latency timer to 64
[    3.092582] input: Lid Switch as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0D:00/input/input1
[    3.131617] ACPI: Lid Switch [LID]
[    3.131932] input: Sleep Button as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0E:00/input/input2
[    3.132159] ACPI: Sleep Button [SLPB]
[    3.132411] input: Power Button as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0C:00/input/input3
[    3.132555] ACPI: Power Button [PWRB]
[    3.132799] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input4
[    3.132938] ACPI: Power Button [PWRF]
[    3.250748] Linux agpgart interface v0.103
[    3.392738] usbcore: registered new interface driver usbfs
[    3.414244] ACPI: AC Adapter [AC0] (on-line)
[    3.418546] pci_hotplug: PCI Hot Plug PCI Core version: 0.5
[    3.448308] ACPI: Battery Slot [BAT0] (battery absent)
[    3.460284] usbcore: registered new interface driver hub
[    3.463246] usbcore: registered new device driver usb
[    3.481342] Marking TSC unstable due to TSC halts in idle
[    3.505328] Switching to clocksource hpet
[    3.549645] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    3.549855] ehci_hcd 0000:00:1d.7: PCI INT A -> GSI 23 (level, low) -> IRQ 23
[    3.550022] ehci_hcd 0000:00:1d.7: setting latency timer to 64
[    3.550032] ehci_hcd 0000:00:1d.7: EHCI Host Controller
[    3.550195] ehci_hcd 0000:00:1d.7: new USB bus registered, assigned bus number 1
[    3.550392] ehci_hcd 0000:00:1d.7: debug port 1
[    3.554375] ehci_hcd 0000:00:1d.7: cache line size of 16 is not supported
[    3.611792] ehci_hcd 0000:00:1d.7: irq 23, io mem 0xf7eb7c00
[    3.653027] ehci_hcd 0000:00:1d.7: USB 2.0 started, EHCI 1.00
[    3.653225] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[    3.653332] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    3.653467] usb usb1: Product: EHCI Host Controller
[    3.653564] usb usb1: Manufacturer: Linux 2.6.33-rc6eeepc-00001-gd37a207-dirty ehci_hcd
[    3.653702] usb usb1: SerialNumber: 0000:00:1d.7
[    3.654422] hub 1-0:1.0: USB hub found
[    3.654530] hub 1-0:1.0: 8 ports detected
[    3.654813] agpgart-intel 0000:00:00.0: Intel 915GM Chipset
[    3.655351] agpgart-intel 0000:00:00.0: detected 7932K stolen memory
[    3.679343] input: Video Bus as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input5
[    3.679736] ACPI: Video Device [VGA] (multi-head: yes  rom: no  post: no)
[    3.683218] agpgart-intel 0000:00:00.0: AGP aperture is 256M @ 0xd0000000
[    3.701484] uhci_hcd: USB Universal Host Controller Interface driver
[    3.701746] uhci_hcd 0000:00:1d.0: PCI INT A -> GSI 23 (level, low) -> IRQ 23
[    3.701872] uhci_hcd 0000:00:1d.0: setting latency timer to 64
[    3.701881] uhci_hcd 0000:00:1d.0: UHCI Host Controller
[    3.702013] uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 2
[    3.745282] uhci_hcd 0000:00:1d.0: irq 23, io base 0x0000e400
[    3.745505] usb usb2: New USB device found, idVendor=1d6b, idProduct=0001
[    3.745613] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    3.745776] usb usb2: Product: UHCI Host Controller
[    3.745960] usb usb2: Manufacturer: Linux 2.6.33-rc6eeepc-00001-gd37a207-dirty uhci_hcd
[    3.746100] usb usb2: SerialNumber: 0000:00:1d.0
[    3.747794] hub 2-0:1.0: USB hub found
[    3.747904] hub 2-0:1.0: 2 ports detected
[    3.748230] uhci_hcd 0000:00:1d.1: PCI INT B -> GSI 19 (level, low) -> IRQ 19
[    3.748354] uhci_hcd 0000:00:1d.1: setting latency timer to 64
[    3.748364] uhci_hcd 0000:00:1d.1: UHCI Host Controller
[    3.748479] uhci_hcd 0000:00:1d.1: new USB bus registered, assigned bus number 3
[    3.748679] uhci_hcd 0000:00:1d.1: irq 19, io base 0x0000e480
[    3.748865] usb usb3: New USB device found, idVendor=1d6b, idProduct=0001
[    3.748971] usb usb3: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    3.749105] usb usb3: Product: UHCI Host Controller
[    3.749201] usb usb3: Manufacturer: Linux 2.6.33-rc6eeepc-00001-gd37a207-dirty uhci_hcd
[    3.749339] usb usb3: SerialNumber: 0000:00:1d.1
[    3.759079] hub 3-0:1.0: USB hub found
[    3.759200] hub 3-0:1.0: 2 ports detected
[    3.759451] uhci_hcd 0000:00:1d.2: PCI INT C -> GSI 18 (level, low) -> IRQ 18
[    3.759575] uhci_hcd 0000:00:1d.2: setting latency timer to 64
[    3.759584] uhci_hcd 0000:00:1d.2: UHCI Host Controller
[    3.759701] uhci_hcd 0000:00:1d.2: new USB bus registered, assigned bus number 4
[    3.759902] uhci_hcd 0000:00:1d.2: irq 18, io base 0x0000e800
[    3.760156] usb usb4: New USB device found, idVendor=1d6b, idProduct=0001
[    3.760265] usb usb4: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    3.760400] usb usb4: Product: UHCI Host Controller
[    3.760496] usb usb4: Manufacturer: Linux 2.6.33-rc6eeepc-00001-gd37a207-dirty uhci_hcd
[    3.760652] usb usb4: SerialNumber: 0000:00:1d.2
[    3.773611] hub 4-0:1.0: USB hub found
[    3.773734] hub 4-0:1.0: 2 ports detected
[    3.773990] uhci_hcd 0000:00:1d.3: PCI INT D -> GSI 16 (level, low) -> IRQ 16
[    3.774112] uhci_hcd 0000:00:1d.3: setting latency timer to 64
[    3.774124] uhci_hcd 0000:00:1d.3: UHCI Host Controller
[    3.774239] uhci_hcd 0000:00:1d.3: new USB bus registered, assigned bus number 5
[    3.774444] uhci_hcd 0000:00:1d.3: irq 16, io base 0x0000e880
[    3.774637] usb usb5: New USB device found, idVendor=1d6b, idProduct=0001
[    3.774743] usb usb5: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    3.774881] usb usb5: Product: UHCI Host Controller
[    3.774977] usb usb5: Manufacturer: Linux 2.6.33-rc6eeepc-00001-gd37a207-dirty uhci_hcd
[    3.775116] usb usb5: SerialNumber: 0000:00:1d.3
[    3.775796] hub 5-0:1.0: USB hub found
[    3.775913] hub 5-0:1.0: 2 ports detected
[    3.816072] cfg80211: Using static regulatory domain info
[    3.816186] cfg80211: Regulatory domain: 00
[    3.816280]     (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[    3.816422]     (2402000 KHz - 2472000 KHz @ 40000 KHz), (600 mBi, 2000 mBm)
[    3.816531]     (2457000 KHz - 2482000 KHz @ 20000 KHz), (600 mBi, 2000 mBm)
[    3.816639]     (2474000 KHz - 2494000 KHz @ 20000 KHz), (600 mBi, 2000 mBm)
[    3.816748]     (5170000 KHz - 5250000 KHz @ 40000 KHz), (600 mBi, 2000 mBm)
[    3.816856]     (5735000 KHz - 5835000 KHz @ 40000 KHz), (600 mBi, 2000 mBm)
[    3.817859] cfg80211: Calling CRDA to update world regulatory domain
[    3.964097] usb 1-5: new high speed USB device using ehci_hcd and address 2
[    3.977857] eeepc_laptop: Eee PC Hotkey Driver
[    3.977967] eeepc_laptop: model 701 does not officially support setting cpu speed
[    3.978104] eeepc_laptop: cpufv disabled to avoid instability
[    3.978244] eeepc_laptop: Hotkey init flags 0x41
[    3.979868] eeepc_laptop: TYPE (2000000) not reported by BIOS, enabling anyway
[    4.025389] eeepc_laptop: Get control methods supported: 0x2101711
[    4.043076] input: Asus EeePC extra buttons as /devices/platform/eeepc/input/input6
[    4.096822] ath5k 0000:01:00.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18
[    4.096953] ath5k 0000:01:00.0: setting latency timer to 64
[    4.097042] ath5k 0000:01:00.0: registered as 'phy0'
[    4.554482] usb 1-5: New USB device found, idVendor=0951, idProduct=1606
[    4.554603] usb 1-5: New USB device strings: Mfr=1, Product=2, SerialNumber=4
[    4.554713] usb 1-5: Product: UB6225
[    4.554808] usb 1-5: Manufacturer: ENE
[    4.554902] usb 1-5: SerialNumber: 146030377350
[    4.632207] Initializing USB Mass Storage driver...
[    4.635302] scsi2 : usb-storage 1-5:1.0
[    4.640843] usbcore: registered new interface driver usb-storage
[    4.640953] USB Mass Storage support registered.
[    4.698521] usb 1-8: new high speed USB device using ehci_hcd and address 3
[    4.709122] ath: EEPROM regdomain: 0x60
[    4.709131] ath: EEPROM indicates we should expect a direct regpair map
[    4.709145] ath: Country alpha2 being used: 00
[    4.709150] ath: Regpair used: 0x60
[    4.868635] usb 1-8: New USB device found, idVendor=eb1a, idProduct=2761
[    4.868756] usb 1-8: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[    4.908115] HDA Intel 0000:00:1b.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[    4.908376] HDA Intel 0000:00:1b.0: irq 27 for MSI/MSI-X
[    4.908436] HDA Intel 0000:00:1b.0: setting latency timer to 64
[    4.951909] Linux video capture interface: v2.00
[    4.978939] uvcvideo: Found UVC 1.00 device <unnamed> (eb1a:2761)
[    5.022812] input: HDA Digital PCBeep as /devices/pci0000:00/0000:00:1b.0/input/input7
[    5.099207] Synaptics Touchpad, model: 1, fw: 6.5, id: 0x1c0b1, caps: 0xa04751/0xa00000
[    5.177528] input: SynPS/2 Synaptics TouchPad as /devices/platform/i8042/serio1/input/input8
[    5.298565] phy0: Selected rate control algorithm 'minstrel'
[    5.300694] Registered led device: ath5k-phy0::rx
[    5.300961] Registered led device: ath5k-phy0::tx
[    5.301068] ath5k phy0: Atheros AR2425 chip found (MAC: 0xe2, PHY: 0x70)
[    5.437918] input: UVC Camera (eb1a:2761) as /devices/pci0000:00/0000:00:1d.7/usb1/1-8/1-8:1.0/input/input9
[    5.438210] usbcore: registered new interface driver uvcvideo
[    5.438312] USB Video Class driver (v0.1.0)
[    6.223725] loop: module loaded
[    6.733776] Adding 358392k swap on /swapfile.  Priority:-1 extents:48 across:1567744k 
[    9.063985] fuse init (API version 7.13)
[    9.640903] scsi 2:0:0:0: Direct-Access     USB2.0   CardReader SD0   0100 PQ: 0 ANSI: 0
[   10.018854] sd 2:0:0:0: [sdb] 15660032 512-byte logical blocks: (8.01 GB/7.46 GiB)
[   10.019584] sd 2:0:0:0: [sdb] Write Protect is off
[   10.019685] sd 2:0:0:0: [sdb] Mode Sense: 03 00 00 00
[   10.019693] sd 2:0:0:0: [sdb] Assuming drive cache: write through
[   10.023706] sd 2:0:0:0: [sdb] Assuming drive cache: write through
[   10.023824]  sdb: sdb1
[   10.030114] sd 2:0:0:0: [sdb] Assuming drive cache: write through
[   10.030230] sd 2:0:0:0: [sdb] Attached SCSI removable disk
[   14.173849] atl2 0000:03:00.0: irq 28 for MSI/MSI-X
[   14.174122] ADDRCONF(NETDEV_UP): eth0: link is not ready
[   14.204447] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[   14.379066] atl2: eth0 NIC Link is Up<100 Mbps Full Duplex>
[   14.379286] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[   15.413243] [drm] Initialized drm 1.1.0 20060810
[   15.508270] i915 0000:00:02.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[   15.508290] i915 0000:00:02.0: setting latency timer to 64
[   15.530891] [drm] set up 7M of stolen space
[   15.572380] [drm] initialized overlay support
[   16.383650] Console: switching to colour frame buffer device 100x30
[   16.383679] fb0: inteldrmfb frame buffer device
[   16.383685] registered panic notifier
[   16.383708] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0
[   16.494772] render error detected, EIR: 0x00000010
[   16.494785] page table error
[   16.494790]   PGTBL_ER: 0x00000010
[   16.494799] [drm:i915_handle_error] *ERROR* EIR stuck: 0x00000010, masking
[   16.494832] render error detected, EIR: 0x00000010
[   16.494837] page table error
[   16.494842]   PGTBL_ER: 0x00000010
[   24.472089] eth0: no IPv6 routers present
[  116.062393] Syncing filesystems ... done.
[  116.070778] Freezing user space processes ... (elapsed 0.01 seconds) done.
[  116.084184] Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.
[  116.100338] PM: Preallocating image memory... Requested image size: 89598 pages
[  116.133873] count = 127220, highmem = 0, max_size = 62579, saveable = 103519
[  116.134032] Target image size: 62579 pages
[  116.134130] Minimum image size: 27245 pages
[  116.555223] Minimum image size: 27429 pages
[  116.555344] pages_highmem = 0, alloc = 64641
[  116.916302] pages = 64641
[  116.916380] alloc_highmem = 0, alloc = 0
[  116.916474] pages = 64641
[  116.916540] pages = 64641, pages_highmem = 0, count - pages = 62579
[  116.943942] Freeing 1708 normal and 0 highmem preallocated pages
[  116.944142] done (allocated 64641 pages)
[  116.944242] PM: Allocated 258564 kbytes in 0.84 seconds (307.81 MB/s)
[  117.148419] ACPI handle has no context!
[  117.148532] atl2 0000:03:00.0: PCI INT A disabled
[  117.148647] ACPI handle has no context!
[  117.164253] ata_piix 0000:00:1f.2: PCI INT B disabled
[  117.164432] HDA Intel 0000:00:1b.0: PCI INT A disabled
[  117.187346] PM: freeze of devices complete after 242.679 msecs
[  117.188401] PM: late freeze of devices complete after 0.896 msecs
[  117.588356] Disabling non-boot CPUs ...
[  117.588719] PM: Creating hibernation image: 
[  117.592004] PM: Need to copy 62462 pages
[  117.592004] Force enabled HPET at resume
[  117.592004] HDA Intel 0000:00:1b.0: restoring config space at offset 0x1 (was 0x100006, writing 0x100002)
[  117.592454] ata_piix 0000:00:1f.2: restoring config space at offset 0x1 (was 0x2b00001, writing 0x2b00005)
[  117.598890] PM: early restore of devices complete after 10.234 msecs
[  117.675508] i915 0000:00:02.0: setting latency timer to 64
[  118.120057] render error detected, EIR: 0x00000010
[  118.123095] page table error
[  118.124043]   PGTBL_ER: 0x00000010
[  118.124043] [drm:i915_handle_error] *ERROR* EIR stuck: 0x00000010, masking
[  118.124043] render error detected, EIR: 0x00000010
[  118.124043] page table error
[  118.124043]   PGTBL_ER: 0x00000010
[  118.703190] HDA Intel 0000:00:1b.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[  118.706432] HDA Intel 0000:00:1b.0: setting latency timer to 64
[  118.709876] HDA Intel 0000:00:1b.0: irq 27 for MSI/MSI-X
[  118.713120] uhci_hcd 0000:00:1d.0: setting latency timer to 64
[  118.716339] usb usb2: root hub lost power or was reset
[  118.719520] uhci_hcd 0000:00:1d.1: setting latency timer to 64
[  118.722704] usb usb3: root hub lost power or was reset
[  118.725889] uhci_hcd 0000:00:1d.2: setting latency timer to 64
[  118.729129] usb usb4: root hub lost power or was reset
[  118.732362] uhci_hcd 0000:00:1d.3: setting latency timer to 64
[  118.735607] usb usb5: root hub lost power or was reset
[  118.738853] ehci_hcd 0000:00:1d.7: setting latency timer to 64
[  118.742089] usb usb1: root hub lost power or was reset
[  118.749170] ehci_hcd 0000:00:1d.7: cache line size of 16 is not supported
[  118.752464] pci 0000:00:1e.0: setting latency timer to 64
[  118.755762] ata_piix 0000:00:1f.2: PCI INT B -> GSI 19 (level, low) -> IRQ 19
[  118.759155] ata_piix 0000:00:1f.2: setting latency timer to 64
[  118.770268] atl2 0000:03:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[  118.773555] atl2 0000:03:00.0: setting latency timer to 64
[  118.790590] sd 1:0:0:0: [sda] Starting disk
[  118.940434] ata2.00: ACPI cmd ef/03:44:00:00:00:a0 (SET FEATURES) filtered out
[  118.943543] ata2.00: ACPI cmd ef/03:0c:00:00:00:a0 (SET FEATURES) filtered out
[  118.960374] ata2.00: configured for UDMA/66
[  119.308054] usb 1-5: reset high speed USB device using ehci_hcd and address 2
[  119.445151] PM: restore of devices complete after 1791.491 msecs
[  119.461021] Restarting tasks ... done.
[  119.572288] usb 1-8: reset high speed USB device using ehci_hcd and address 3
[  120.892151] atl2 0000:03:00.0: irq 28 for MSI/MSI-X
[  120.892402] ADDRCONF(NETDEV_UP): eth0: link is not ready
[  120.908471] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[  122.423156] atl2: eth0 NIC Link is Up<100 Mbps Full Duplex>
[  122.423288] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[  133.096086] eth0: no IPv6 routers present

[-- Attachment #3: DSCF1256-4x.jpeg --]
[-- Type: image/jpeg, Size: 82133 bytes --]

Re: s2disk hang update

[Alan Jenkins]

Alan Jenkins wrote:
> On 2/2/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>   
>> On Tuesday 02 February 2010, Alan Jenkins wrote:
>>     
>>> On 1/2/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>>>       
>>>> On Saturday 02 January 2010, Alan Jenkins wrote:
>>>> Hi,
>>>>
>>>>         
>>>>> I've been suffering from s2disk hangs again.  This time, the hangs
>>>>> were always before the hibernation image was written out.
>>>>>
>>>>> They're still frustratingly random.  I just started trying to work out
>>>>> whether doubling PAGES_FOR_IO makes them go away, but they went away
>>>>> on their own again.
>>>>>
>>>>> I did manage to capture a backtrace with debug info though.  Here it
>>>>> is for 2.6.33-rc2.  (It has also happened on rc1).  I was able to get
>>>>> the line numbers (using gdb, e.g.  "info line
>>>>> *stop_machine_create+0x27"), having built the kernel with debug info.
>>>>>
>>>>> [top of trace lost due to screen height]
>>>>> ? sync_page	(filemap.c:183)
>>>>> ? wait_on_page_bit	(filemap.c:506)
>>>>> ? wake_bit_function	(wait.c:174)
>>>>> ? shrink_page_list	(vmscan.c:696)
>>>>> ? __delayacct_blkio_end	(delayacct.c:94)
>>>>> ? finish_wait	(list.h:142)
>>>>> ? congestion_wait	(backing-dev.c:761)
>>>>> ? shrink_inactive_list	(vmscan.c:1193)
>>>>> ? scsi_request_fn	(spinlock.h:306)
>>>>> ? blk_run_queue	(blk-core.c:434)
>>>>> ? shrink_zone	(vmscan.c:1484)
>>>>> ? do_try_to_free_pages	(vmscan.c:1684)
>>>>> ? try_to_free_pages	(vmscan.c:1848)
>>>>> ? isolate_pages_global	(vmscan.c:980)
>>>>> ? __alloc_pages_nodemask	(page_alloc.c:1702)
>>>>> ? __get_free_pages	(page_alloc.c:1990)
>>>>> ? copy_process	(fork.c:237)
>>>>> ? do_fork	(fork.c:1443)
>>>>> ? rb_erase
>>>>> ? __switch_to
>>>>> ? kthread
>>>>> ? kernel_thread
>>>>> ? kthread
>>>>> ? kernel_thread_helper
>>>>> ? kthreadd
>>>>> ? kthreadd
>>>>> ? kernel_thread_helper
>>>>>
>>>>> INFO: task s2disk:2174 blocked for more than 120 seconds
>>>>>           
>>>> This looks like we have run out of memory while creating a new kernel
>>>> thread
>>>> and we have blocked on I/O while trying to free some space (quite
>>>> obviously,
>>>> because the I/O doesn't work at this point).
>>>>         
>>> For context, the kernel thread being created here is the stop_machine
>>> thread.  It is created by disable_nonboot_cpus(), called from
>>> hibernation_snapshot().  See e.g. this hung task backtrace -
>>>
>>> http://picasaweb.google.com/lh/photo/BkKUwZCrQ2ceBIM9ZOh7Ow?feat=directlink
>>>
>>>       
>>>> I think it should help if you increase PAGES_FOR_IO, then.
>>>>         
>>> Ok, it's been happening again on 2.6.33-rc6.  Unfortunately increasing
>>> PAGES_FOR_IO doesn't help.
>>>
>>> I've been using a test patch to make PAGES_FOR_IO tunable at run time.
>>>  I get the same hang if I increase it by a factor of 10, to 10240:
>>>
>>> # cd /sys/module/kernel/parameters/
>>> # ls
>>> consoleblank  initcall_debug  PAGES_FOR_IO  panic  pause_on_oops
>>> SPARE_PAGES
>>> # echo 10240 > PAGES_FOR_IO
>>> # echo 2560 > SPARE_PAGES
>>> # cat SPARE_PAGES
>>> 2560
>>> # cat PAGES_FOR_IO
>>> 10240
>>>
>>> I also added a debug patch to try and understand the calculations with
>>> PAGES_FOR_IO in hibernate_preallocate_memory().  I still don't really
>>> understand them and there could easily be errors in my debug patch,
>>> but the output is interesting.
>>>
>>> Increasing PAGES_FOR_IO by almost 10000 has the expected effect of
>>> decreasing "max_size" by the same amount.  However it doesn't appear
>>> to increase the number of free pages at the critical moment.
>>>
>>> PAGES_FOR_IO = 1024:
>>> http://picasaweb.google.com/lh/photo/DYQGvB_4hvCvVuxZf2ibxg?feat=directlink
>>>
>>> PAGES_FOR_IO = 10240:
>>> http://picasaweb.google.com/lh/photo/AIkV_ZBwt22nzN-JdOJCWA?feat=directlink
>>>
>>>
>>> You may remember that I was originally able to avoid the hang by
>>> reverting commit 5f8dcc2.  It doesn't revert cleanly any more.
>>> However, I tried applying my test&debug patches on top of 5f8dcc2~1
>>> (just before the commit that triggered the hang).  That kernel
>>> apparently left ~5000 pages free at hibernation time, v.s. ~1200 when
>>> testing the same scenario on 2.6.33-rc6.  (As before, the number of
>>> free pages remained the same if I increased PAGES_FOR_IO to 10240).
>>>       
>> I think the hang may be avoided by using this patch
>> http://patchwork.kernel.org/patch/74740/
>> but the hibernation will fail instead.
>>
>> Can you please repeat your experiments with the patch below applied and
>> report back?
>>
>> Rafael
>>     
>
> It causes hibernation to succeed <grin>.
>   

Perhaps I spoke too soon.  I see the same hang if I run too many 
applications.  The first hibernation fails with "not enough swap" as 
expected, but the second or third attempt hangs (with the same backtrace 
as before).

The patch definitely helps though.  Without the patch, I see a hang the 
first time I try to hibernate with too many applications running.

Regards
Alan

Re: s2disk hang update

[Alan Jenkins]

Alan Jenkins wrote:
> On 2/2/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
>   
>> On Tuesday 02 February 2010, Alan Jenkins wrote:
>>     
>>> On 1/2/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
>>>       
>>>> On Saturday 02 January 2010, Alan Jenkins wrote:
>>>> Hi,
>>>>
>>>>         
>>>>> I've been suffering from s2disk hangs again.  This time, the hangs
>>>>> were always before the hibernation image was written out.
>>>>>
>>>>> They're still frustratingly random.  I just started trying to work out
>>>>> whether doubling PAGES_FOR_IO makes them go away, but they went away
>>>>> on their own again.
>>>>>
>>>>> I did manage to capture a backtrace with debug info though.  Here it
>>>>> is for 2.6.33-rc2.  (It has also happened on rc1).  I was able to get
>>>>> the line numbers (using gdb, e.g.  "info line
>>>>> *stop_machine_create+0x27"), having built the kernel with debug info.
>>>>>
>>>>> [top of trace lost due to screen height]
>>>>> ? sync_page	(filemap.c:183)
>>>>> ? wait_on_page_bit	(filemap.c:506)
>>>>> ? wake_bit_function	(wait.c:174)
>>>>> ? shrink_page_list	(vmscan.c:696)
>>>>> ? __delayacct_blkio_end	(delayacct.c:94)
>>>>> ? finish_wait	(list.h:142)
>>>>> ? congestion_wait	(backing-dev.c:761)
>>>>> ? shrink_inactive_list	(vmscan.c:1193)
>>>>> ? scsi_request_fn	(spinlock.h:306)
>>>>> ? blk_run_queue	(blk-core.c:434)
>>>>> ? shrink_zone	(vmscan.c:1484)
>>>>> ? do_try_to_free_pages	(vmscan.c:1684)
>>>>> ? try_to_free_pages	(vmscan.c:1848)
>>>>> ? isolate_pages_global	(vmscan.c:980)
>>>>> ? __alloc_pages_nodemask	(page_alloc.c:1702)
>>>>> ? __get_free_pages	(page_alloc.c:1990)
>>>>> ? copy_process	(fork.c:237)
>>>>> ? do_fork	(fork.c:1443)
>>>>> ? rb_erase
>>>>> ? __switch_to
>>>>> ? kthread
>>>>> ? kernel_thread
>>>>> ? kthread
>>>>> ? kernel_thread_helper
>>>>> ? kthreadd
>>>>> ? kthreadd
>>>>> ? kernel_thread_helper
>>>>>
>>>>> INFO: task s2disk:2174 blocked for more than 120 seconds
>>>>>           
>>>> This looks like we have run out of memory while creating a new kernel
>>>> thread
>>>> and we have blocked on I/O while trying to free some space (quite
>>>> obviously,
>>>> because the I/O doesn't work at this point).
>>>>         
>>> For context, the kernel thread being created here is the stop_machine
>>> thread.  It is created by disable_nonboot_cpus(), called from
>>> hibernation_snapshot().  See e.g. this hung task backtrace -
>>>
>>> http://picasaweb.google.com/lh/photo/BkKUwZCrQ2ceBIM9ZOh7Ow?feat=directlink
>>>
>>>       
>>>> I think it should help if you increase PAGES_FOR_IO, then.
>>>>         
>>> Ok, it's been happening again on 2.6.33-rc6.  Unfortunately increasing
>>> PAGES_FOR_IO doesn't help.
>>>
>>> I've been using a test patch to make PAGES_FOR_IO tunable at run time.
>>>  I get the same hang if I increase it by a factor of 10, to 10240:
>>>
>>> # cd /sys/module/kernel/parameters/
>>> # ls
>>> consoleblank  initcall_debug  PAGES_FOR_IO  panic  pause_on_oops
>>> SPARE_PAGES
>>> # echo 10240 > PAGES_FOR_IO
>>> # echo 2560 > SPARE_PAGES
>>> # cat SPARE_PAGES
>>> 2560
>>> # cat PAGES_FOR_IO
>>> 10240
>>>
>>> I also added a debug patch to try and understand the calculations with
>>> PAGES_FOR_IO in hibernate_preallocate_memory().  I still don't really
>>> understand them and there could easily be errors in my debug patch,
>>> but the output is interesting.
>>>
>>> Increasing PAGES_FOR_IO by almost 10000 has the expected effect of
>>> decreasing "max_size" by the same amount.  However it doesn't appear
>>> to increase the number of free pages at the critical moment.
>>>
>>> PAGES_FOR_IO = 1024:
>>> http://picasaweb.google.com/lh/photo/DYQGvB_4hvCvVuxZf2ibxg?feat=directlink
>>>
>>> PAGES_FOR_IO = 10240:
>>> http://picasaweb.google.com/lh/photo/AIkV_ZBwt22nzN-JdOJCWA?feat=directlink
>>>
>>>
>>> You may remember that I was originally able to avoid the hang by
>>> reverting commit 5f8dcc2.  It doesn't revert cleanly any more.
>>> However, I tried applying my test&debug patches on top of 5f8dcc2~1
>>> (just before the commit that triggered the hang).  That kernel
>>> apparently left ~5000 pages free at hibernation time, v.s. ~1200 when
>>> testing the same scenario on 2.6.33-rc6.  (As before, the number of
>>> free pages remained the same if I increased PAGES_FOR_IO to 10240).
>>>       
>> I think the hang may be avoided by using this patch
>> http://patchwork.kernel.org/patch/74740/
>> but the hibernation will fail instead.
>>
>> Can you please repeat your experiments with the patch below applied and
>> report back?
>>
>> Rafael
>>     
>
> It causes hibernation to succeed <grin>.
>   

Perhaps I spoke too soon.  I see the same hang if I run too many 
applications.  The first hibernation fails with "not enough swap" as 
expected, but the second or third attempt hangs (with the same backtrace 
as before).

The patch definitely helps though.  Without the patch, I see a hang the 
first time I try to hibernate with too many applications running.

Regards
Alan

Re: s2disk hang update

[Rafael J. Wysocki]

On Tuesday 09 February 2010, Alan Jenkins wrote:
> Alan Jenkins wrote:
> > On 2/2/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >   
> >> On Tuesday 02 February 2010, Alan Jenkins wrote:
> >>     
> >>> On 1/2/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >>>       
> >>>> On Saturday 02 January 2010, Alan Jenkins wrote:
> >>>> Hi,
> >>>>
> >>>>         
> >>>>> I've been suffering from s2disk hangs again.  This time, the hangs
> >>>>> were always before the hibernation image was written out.
> >>>>>
> >>>>> They're still frustratingly random.  I just started trying to work out
> >>>>> whether doubling PAGES_FOR_IO makes them go away, but they went away
> >>>>> on their own again.
> >>>>>
> >>>>> I did manage to capture a backtrace with debug info though.  Here it
> >>>>> is for 2.6.33-rc2.  (It has also happened on rc1).  I was able to get
> >>>>> the line numbers (using gdb, e.g.  "info line
> >>>>> *stop_machine_create+0x27"), having built the kernel with debug info.
> >>>>>
> >>>>> [top of trace lost due to screen height]
> >>>>> ? sync_page	(filemap.c:183)
> >>>>> ? wait_on_page_bit	(filemap.c:506)
> >>>>> ? wake_bit_function	(wait.c:174)
> >>>>> ? shrink_page_list	(vmscan.c:696)
> >>>>> ? __delayacct_blkio_end	(delayacct.c:94)
> >>>>> ? finish_wait	(list.h:142)
> >>>>> ? congestion_wait	(backing-dev.c:761)
> >>>>> ? shrink_inactive_list	(vmscan.c:1193)
> >>>>> ? scsi_request_fn	(spinlock.h:306)
> >>>>> ? blk_run_queue	(blk-core.c:434)
> >>>>> ? shrink_zone	(vmscan.c:1484)
> >>>>> ? do_try_to_free_pages	(vmscan.c:1684)
> >>>>> ? try_to_free_pages	(vmscan.c:1848)
> >>>>> ? isolate_pages_global	(vmscan.c:980)
> >>>>> ? __alloc_pages_nodemask	(page_alloc.c:1702)
> >>>>> ? __get_free_pages	(page_alloc.c:1990)
> >>>>> ? copy_process	(fork.c:237)
> >>>>> ? do_fork	(fork.c:1443)
> >>>>> ? rb_erase
> >>>>> ? __switch_to
> >>>>> ? kthread
> >>>>> ? kernel_thread
> >>>>> ? kthread
> >>>>> ? kernel_thread_helper
> >>>>> ? kthreadd
> >>>>> ? kthreadd
> >>>>> ? kernel_thread_helper
> >>>>>
> >>>>> INFO: task s2disk:2174 blocked for more than 120 seconds
> >>>>>           
> >>>> This looks like we have run out of memory while creating a new kernel
> >>>> thread
> >>>> and we have blocked on I/O while trying to free some space (quite
> >>>> obviously,
> >>>> because the I/O doesn't work at this point).
> >>>>         
> >>> For context, the kernel thread being created here is the stop_machine
> >>> thread.  It is created by disable_nonboot_cpus(), called from
> >>> hibernation_snapshot().  See e.g. this hung task backtrace -
> >>>
> >>> http://picasaweb.google.com/lh/photo/BkKUwZCrQ2ceBIM9ZOh7Ow?feat=directlink
> >>>
> >>>       
> >>>> I think it should help if you increase PAGES_FOR_IO, then.
> >>>>         
> >>> Ok, it's been happening again on 2.6.33-rc6.  Unfortunately increasing
> >>> PAGES_FOR_IO doesn't help.
> >>>
> >>> I've been using a test patch to make PAGES_FOR_IO tunable at run time.
> >>>  I get the same hang if I increase it by a factor of 10, to 10240:
> >>>
> >>> # cd /sys/module/kernel/parameters/
> >>> # ls
> >>> consoleblank  initcall_debug  PAGES_FOR_IO  panic  pause_on_oops
> >>> SPARE_PAGES
> >>> # echo 10240 > PAGES_FOR_IO
> >>> # echo 2560 > SPARE_PAGES
> >>> # cat SPARE_PAGES
> >>> 2560
> >>> # cat PAGES_FOR_IO
> >>> 10240
> >>>
> >>> I also added a debug patch to try and understand the calculations with
> >>> PAGES_FOR_IO in hibernate_preallocate_memory().  I still don't really
> >>> understand them and there could easily be errors in my debug patch,
> >>> but the output is interesting.
> >>>
> >>> Increasing PAGES_FOR_IO by almost 10000 has the expected effect of
> >>> decreasing "max_size" by the same amount.  However it doesn't appear
> >>> to increase the number of free pages at the critical moment.
> >>>
> >>> PAGES_FOR_IO = 1024:
> >>> http://picasaweb.google.com/lh/photo/DYQGvB_4hvCvVuxZf2ibxg?feat=directlink
> >>>
> >>> PAGES_FOR_IO = 10240:
> >>> http://picasaweb.google.com/lh/photo/AIkV_ZBwt22nzN-JdOJCWA?feat=directlink
> >>>
> >>>
> >>> You may remember that I was originally able to avoid the hang by
> >>> reverting commit 5f8dcc2.  It doesn't revert cleanly any more.
> >>> However, I tried applying my test&debug patches on top of 5f8dcc2~1
> >>> (just before the commit that triggered the hang).  That kernel
> >>> apparently left ~5000 pages free at hibernation time, v.s. ~1200 when
> >>> testing the same scenario on 2.6.33-rc6.  (As before, the number of
> >>> free pages remained the same if I increased PAGES_FOR_IO to 10240).
> >>>       
> >> I think the hang may be avoided by using this patch
> >> http://patchwork.kernel.org/patch/74740/
> >> but the hibernation will fail instead.
> >>
> >> Can you please repeat your experiments with the patch below applied and
> >> report back?
> >>
> >> Rafael
> >>     
> >
> > It causes hibernation to succeed <grin>.
> >   
> 
> Perhaps I spoke too soon.  I see the same hang if I run too many 
> applications.  The first hibernation fails with "not enough swap" as 
> expected, but the second or third attempt hangs (with the same backtrace 
> as before).
> 
> The patch definitely helps though.  Without the patch, I see a hang the 
> first time I try to hibernate with too many applications running.

Well, I have an idea.

Can you try to apply the appended patch in addition and see if that helps?

Rafael

---
 kernel/power/snapshot.c |   11 +++++++++++
 1 file changed, 11 insertions(+)

Index: linux-2.6/kernel/power/snapshot.c
===================================================================
--- linux-2.6.orig/kernel/power/snapshot.c
+++ linux-2.6/kernel/power/snapshot.c
@@ -1179,6 +1179,17 @@ static void free_unnecessary_pages(void)
 		to_free_normal -= save_highmem - alloc_highmem;
 	}
 
+	/*
+	 * After we have preallocated memory for the image there may be too
+	 * little memory for other things done later down the road, like
+	 * starting new kernel threads for disabling nonboot CPUs.  Try to
+	 * mitigate this by reducing the number of pages that we're going to
+	 * keep preallocated by 20%.
+	 */
+	to_free_normal += (alloc_normal - to_free_normal) / 5;
+	if (to_free_normal > alloc_normal)
+		to_free_normal = alloc_normal;
+
 	memory_bm_position_reset(&copy_bm);
 
 	while (to_free_normal > 0 && to_free_highmem > 0) {

Re: s2disk hang update

[Rafael J. Wysocki]

On Tuesday 09 February 2010, Alan Jenkins wrote:
> Alan Jenkins wrote:
> > On 2/2/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> >   
> >> On Tuesday 02 February 2010, Alan Jenkins wrote:
> >>     
> >>> On 1/2/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> >>>       
> >>>> On Saturday 02 January 2010, Alan Jenkins wrote:
> >>>> Hi,
> >>>>
> >>>>         
> >>>>> I've been suffering from s2disk hangs again.  This time, the hangs
> >>>>> were always before the hibernation image was written out.
> >>>>>
> >>>>> They're still frustratingly random.  I just started trying to work out
> >>>>> whether doubling PAGES_FOR_IO makes them go away, but they went away
> >>>>> on their own again.
> >>>>>
> >>>>> I did manage to capture a backtrace with debug info though.  Here it
> >>>>> is for 2.6.33-rc2.  (It has also happened on rc1).  I was able to get
> >>>>> the line numbers (using gdb, e.g.  "info line
> >>>>> *stop_machine_create+0x27"), having built the kernel with debug info.
> >>>>>
> >>>>> [top of trace lost due to screen height]
> >>>>> ? sync_page	(filemap.c:183)
> >>>>> ? wait_on_page_bit	(filemap.c:506)
> >>>>> ? wake_bit_function	(wait.c:174)
> >>>>> ? shrink_page_list	(vmscan.c:696)
> >>>>> ? __delayacct_blkio_end	(delayacct.c:94)
> >>>>> ? finish_wait	(list.h:142)
> >>>>> ? congestion_wait	(backing-dev.c:761)
> >>>>> ? shrink_inactive_list	(vmscan.c:1193)
> >>>>> ? scsi_request_fn	(spinlock.h:306)
> >>>>> ? blk_run_queue	(blk-core.c:434)
> >>>>> ? shrink_zone	(vmscan.c:1484)
> >>>>> ? do_try_to_free_pages	(vmscan.c:1684)
> >>>>> ? try_to_free_pages	(vmscan.c:1848)
> >>>>> ? isolate_pages_global	(vmscan.c:980)
> >>>>> ? __alloc_pages_nodemask	(page_alloc.c:1702)
> >>>>> ? __get_free_pages	(page_alloc.c:1990)
> >>>>> ? copy_process	(fork.c:237)
> >>>>> ? do_fork	(fork.c:1443)
> >>>>> ? rb_erase
> >>>>> ? __switch_to
> >>>>> ? kthread
> >>>>> ? kernel_thread
> >>>>> ? kthread
> >>>>> ? kernel_thread_helper
> >>>>> ? kthreadd
> >>>>> ? kthreadd
> >>>>> ? kernel_thread_helper
> >>>>>
> >>>>> INFO: task s2disk:2174 blocked for more than 120 seconds
> >>>>>           
> >>>> This looks like we have run out of memory while creating a new kernel
> >>>> thread
> >>>> and we have blocked on I/O while trying to free some space (quite
> >>>> obviously,
> >>>> because the I/O doesn't work at this point).
> >>>>         
> >>> For context, the kernel thread being created here is the stop_machine
> >>> thread.  It is created by disable_nonboot_cpus(), called from
> >>> hibernation_snapshot().  See e.g. this hung task backtrace -
> >>>
> >>> http://picasaweb.google.com/lh/photo/BkKUwZCrQ2ceBIM9ZOh7Ow?feat=directlink
> >>>
> >>>       
> >>>> I think it should help if you increase PAGES_FOR_IO, then.
> >>>>         
> >>> Ok, it's been happening again on 2.6.33-rc6.  Unfortunately increasing
> >>> PAGES_FOR_IO doesn't help.
> >>>
> >>> I've been using a test patch to make PAGES_FOR_IO tunable at run time.
> >>>  I get the same hang if I increase it by a factor of 10, to 10240:
> >>>
> >>> # cd /sys/module/kernel/parameters/
> >>> # ls
> >>> consoleblank  initcall_debug  PAGES_FOR_IO  panic  pause_on_oops
> >>> SPARE_PAGES
> >>> # echo 10240 > PAGES_FOR_IO
> >>> # echo 2560 > SPARE_PAGES
> >>> # cat SPARE_PAGES
> >>> 2560
> >>> # cat PAGES_FOR_IO
> >>> 10240
> >>>
> >>> I also added a debug patch to try and understand the calculations with
> >>> PAGES_FOR_IO in hibernate_preallocate_memory().  I still don't really
> >>> understand them and there could easily be errors in my debug patch,
> >>> but the output is interesting.
> >>>
> >>> Increasing PAGES_FOR_IO by almost 10000 has the expected effect of
> >>> decreasing "max_size" by the same amount.  However it doesn't appear
> >>> to increase the number of free pages at the critical moment.
> >>>
> >>> PAGES_FOR_IO = 1024:
> >>> http://picasaweb.google.com/lh/photo/DYQGvB_4hvCvVuxZf2ibxg?feat=directlink
> >>>
> >>> PAGES_FOR_IO = 10240:
> >>> http://picasaweb.google.com/lh/photo/AIkV_ZBwt22nzN-JdOJCWA?feat=directlink
> >>>
> >>>
> >>> You may remember that I was originally able to avoid the hang by
> >>> reverting commit 5f8dcc2.  It doesn't revert cleanly any more.
> >>> However, I tried applying my test&debug patches on top of 5f8dcc2~1
> >>> (just before the commit that triggered the hang).  That kernel
> >>> apparently left ~5000 pages free at hibernation time, v.s. ~1200 when
> >>> testing the same scenario on 2.6.33-rc6.  (As before, the number of
> >>> free pages remained the same if I increased PAGES_FOR_IO to 10240).
> >>>       
> >> I think the hang may be avoided by using this patch
> >> http://patchwork.kernel.org/patch/74740/
> >> but the hibernation will fail instead.
> >>
> >> Can you please repeat your experiments with the patch below applied and
> >> report back?
> >>
> >> Rafael
> >>     
> >
> > It causes hibernation to succeed <grin>.
> >   
> 
> Perhaps I spoke too soon.  I see the same hang if I run too many 
> applications.  The first hibernation fails with "not enough swap" as 
> expected, but the second or third attempt hangs (with the same backtrace 
> as before).
> 
> The patch definitely helps though.  Without the patch, I see a hang the 
> first time I try to hibernate with too many applications running.

Well, I have an idea.

Can you try to apply the appended patch in addition and see if that helps?

Rafael

---
 kernel/power/snapshot.c |   11 +++++++++++
 1 file changed, 11 insertions(+)

Index: linux-2.6/kernel/power/snapshot.c
===================================================================
--- linux-2.6.orig/kernel/power/snapshot.c
+++ linux-2.6/kernel/power/snapshot.c
@@ -1179,6 +1179,17 @@ static void free_unnecessary_pages(void)
 		to_free_normal -= save_highmem - alloc_highmem;
 	}
 
+	/*
+	 * After we have preallocated memory for the image there may be too
+	 * little memory for other things done later down the road, like
+	 * starting new kernel threads for disabling nonboot CPUs.  Try to
+	 * mitigate this by reducing the number of pages that we're going to
+	 * keep preallocated by 20%.
+	 */
+	to_free_normal += (alloc_normal - to_free_normal) / 5;
+	if (to_free_normal > alloc_normal)
+		to_free_normal = alloc_normal;
+
 	memory_bm_position_reset(&copy_bm);
 
 	while (to_free_normal > 0 && to_free_highmem > 0) {

Re: s2disk hang update

[Alan Jenkins]

On 2/15/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> On Tuesday 09 February 2010, Alan Jenkins wrote:
>> Perhaps I spoke too soon.  I see the same hang if I run too many
>> applications.  The first hibernation fails with "not enough swap" as
>> expected, but the second or third attempt hangs (with the same backtrace
>> as before).
>>
>> The patch definitely helps though.  Without the patch, I see a hang the
>> first time I try to hibernate with too many applications running.
>
> Well, I have an idea.
>
> Can you try to apply the appended patch in addition and see if that helps?
>
> Rafael

It doesn't seem to help.

Thanks
Alan

Re: s2disk hang update

[Alan Jenkins]

On 2/15/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> On Tuesday 09 February 2010, Alan Jenkins wrote:
>> Perhaps I spoke too soon.  I see the same hang if I run too many
>> applications.  The first hibernation fails with "not enough swap" as
>> expected, but the second or third attempt hangs (with the same backtrace
>> as before).
>>
>> The patch definitely helps though.  Without the patch, I see a hang the
>> first time I try to hibernate with too many applications running.
>
> Well, I have an idea.
>
> Can you try to apply the appended patch in addition and see if that helps?
>
> Rafael

It doesn't seem to help.

Thanks
Alan

Re: s2disk hang update

[Alan Jenkins]

[-- Attachment #1: Type: text/plain, Size: 1414 bytes --]

On 2/16/10, Alan Jenkins <sourcejedi.lkml@googlemail.com> wrote:
> On 2/15/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> On Tuesday 09 February 2010, Alan Jenkins wrote:
>>> Perhaps I spoke too soon.  I see the same hang if I run too many
>>> applications.  The first hibernation fails with "not enough swap" as
>>> expected, but the second or third attempt hangs (with the same backtrace
>>> as before).
>>>
>>> The patch definitely helps though.  Without the patch, I see a hang the
>>> first time I try to hibernate with too many applications running.
>>
>> Well, I have an idea.
>>
>> Can you try to apply the appended patch in addition and see if that
>> helps?
>>
>> Rafael
>
> It doesn't seem to help.

To be clear: It doesn't stop the hang when I hibernate with too many
applications.

It does stop the same hang in a different case though.

1. boot with init=/bin/bash
2. run s2disk
3. cancel the s2disk
4. repeat steps 2&3

With the patch, I can run 10s of iterations, with no hang.
Without the patch, it soon hangs, (in disable_nonboot_cpus(), as always).

That's what happens on 2.6.33-rc7.  On 2.6.30, there is no problem.
On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an allocation
failure after a couple of iterations ("kthreadd: page allocation
failure. order:1, mode:0xd0").  It looks like it might be the same
stop_machine thread allocation failure that causes the hang.

Regards
Alan

[-- Attachment #2: graceful-allocation-failure.txt --]
[-- Type: text/plain, Size: 30282 bytes --]

[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Linux version 2.6.31eeepc (alan@alan-desktop-karmic) (gcc version 4.4.1 (Ubuntu 4.4.1-4ubuntu8) ) #48 SMP Tue Dec 1 14:37:15 GMT 2009
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[    0.000000]   AMD AuthenticAMD
[    0.000000]   NSC Geode by NSC
[    0.000000]   Cyrix CyrixInstead
[    0.000000]   Centaur CentaurHauls
[    0.000000]   Transmeta GenuineTMx86
[    0.000000]   Transmeta TransmetaCPU
[    0.000000]   UMC UMC UMC UMC
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[    0.000000]  BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved)
[    0.000000]  BIOS-e820: 00000000000e4000 - 0000000000100000 (reserved)
[    0.000000]  BIOS-e820: 0000000000100000 - 000000001f780000 (usable)
[    0.000000]  BIOS-e820: 000000001f780000 - 000000001f790000 (ACPI data)
[    0.000000]  BIOS-e820: 000000001f790000 - 000000001f7d0000 (ACPI NVS)
[    0.000000]  BIOS-e820: 000000001f7d0000 - 000000001f7de000 (reserved)
[    0.000000]  BIOS-e820: 000000001f7e0000 - 000000001f800000 (reserved)
[    0.000000]  BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
[    0.000000]  BIOS-e820: 00000000fff80000 - 0000000100000000 (reserved)
[    0.000000] DMI present.
[    0.000000] AMI BIOS detected: BIOS may corrupt low RAM, working around it.
[    0.000000] e820 update range: 0000000000000000 - 0000000000010000 (usable) ==> (reserved)
[    0.000000] last_pfn = 0x1f780 max_arch_pfn = 0x100000
[    0.000000] MTRR default type: uncachable
[    0.000000] MTRR fixed ranges enabled:
[    0.000000]   00000-9FFFF write-back
[    0.000000]   A0000-DFFFF uncachable
[    0.000000]   E0000-EFFFF write-through
[    0.000000]   F0000-FFFFF write-protect
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[    0.000000]   1 base 01F800000 mask FFF800000 uncachable
[    0.000000]   2 disabled
[    0.000000]   3 disabled
[    0.000000]   4 disabled
[    0.000000]   5 disabled
[    0.000000]   6 disabled
[    0.000000]   7 disabled
[    0.000000] PAT not supported by CPU.
[    0.000000] initial memory mapped : 0 - 01800000
[    0.000000] init_memory_mapping: 0000000000000000-000000001f780000
[    0.000000]  0000000000 - 0000400000 page 4k
[    0.000000]  0000400000 - 001f400000 page 2M
[    0.000000]  001f400000 - 001f780000 page 4k
[    0.000000] kernel direct mapping tables up to 1f780000 @ 10000-16000
[    0.000000] RAMDISK: 176f6000 - 179df1f6
[    0.000000] ACPI: RSDP 000fbe50 00014 (v00 ACPIAM)
[    0.000000] ACPI: RSDT 1f780000 00034 (v01 A M I  OEMRSDT  03000911 MSFT 00000097)
[    0.000000] ACPI: FACP 1f780200 00081 (v01 A M I  OEMFACP  03000911 MSFT 00000097)
[    0.000000] ACPI: DSDT 1f780400 06069 (v01  A0797 A0797000 00000000 INTL 20060113)
[    0.000000] ACPI: FACS 1f790000 00040
[    0.000000] ACPI: APIC 1f780390 00068 (v01 A M I  OEMAPIC  03000911 MSFT 00000097)
[    0.000000] ACPI: OEMB 1f790040 00046 (v01 A M I  AMI_OEM  03000911 MSFT 00000097)
[    0.000000] ACPI: MCFG 1f786470 0003C (v01 A M I  OEMMCFG  03000911 MSFT 00000097)
[    0.000000] ACPI: Local APIC address 0xfee00000
[    0.000000] 0MB HIGHMEM available.
[    0.000000] 503MB LOWMEM available.
[    0.000000]   mapped low ram: 0 - 1f780000
[    0.000000]   low ram: 0 - 1f780000
[    0.000000]   node 0 low ram: 00000000 - 1f780000
[    0.000000]   node 0 bootmap 00012000 - 00015ef0
[    0.000000] (9 early reservations) ==> bootmem [0000000000 - 001f780000]
[    0.000000]   #0 [0000000000 - 0000001000]   BIOS data page ==> [0000000000 - 0000001000]
[    0.000000]   #1 [0000001000 - 0000002000]    EX TRAMPOLINE ==> [0000001000 - 0000002000]
[    0.000000]   #2 [0000006000 - 0000007000]       TRAMPOLINE ==> [0000006000 - 0000007000]
[    0.000000]   #3 [0001000000 - 00014a5f90]    TEXT DATA BSS ==> [0001000000 - 00014a5f90]
[    0.000000]   #4 [00176f6000 - 00179df1f6]          RAMDISK ==> [00176f6000 - 00179df1f6]
[    0.000000]   #5 [000009fc00 - 0000100000]    BIOS reserved ==> [000009fc00 - 0000100000]
[    0.000000]   #6 [00014a6000 - 00014ac1f4]              BRK ==> [00014a6000 - 00014ac1f4]
[    0.000000]   #7 [0000010000 - 0000012000]          PGTABLE ==> [0000010000 - 0000012000]
[    0.000000]   #8 [0000012000 - 0000016000]          BOOTMAP ==> [0000012000 - 0000016000]
[    0.000000] found SMP MP-table at [c00ff780] ff780
[    0.000000] Zone PFN ranges:
[    0.000000]   DMA      0x00000010 -> 0x00001000
[    0.000000]   Normal   0x00001000 -> 0x0001f780
[    0.000000]   HighMem  0x0001f780 -> 0x0001f780
[    0.000000] Movable zone start PFN for each node
[    0.000000] early_node_map[2] active PFN ranges
[    0.000000]     0: 0x00000010 -> 0x0000009f
[    0.000000]     0: 0x00000100 -> 0x0001f780
[    0.000000] On node 0 totalpages: 128783
[    0.000000] free_area_init_node: node 0, pgdat c1396960, node_mem_map c14ae200
[    0.000000]   DMA zone: 32 pages used for memmap
[    0.000000]   DMA zone: 0 pages reserved
[    0.000000]   DMA zone: 3951 pages, LIFO batch:0
[    0.000000]   Normal zone: 975 pages used for memmap
[    0.000000]   Normal zone: 123825 pages, LIFO batch:31
[    0.000000] Using APIC driver default
[    0.000000] ACPI: PM-Timer IO Port: 0x808
[    0.000000] ACPI: Local APIC address 0xfee00000
[    0.000000] ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled)
[    0.000000] ACPI: IOAPIC (id[0x01] address[0xfec00000] gsi_base[0])
[    0.000000] IOAPIC[0]: apic_id 1, version 32, address 0xfec00000, GSI 0-23
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[    0.000000] ACPI: IRQ0 used by override.
[    0.000000] ACPI: IRQ2 used by override.
[    0.000000] ACPI: IRQ9 used by override.
[    0.000000] Enabling APIC mode:  Flat.  Using 1 I/O APICs
[    0.000000] Using ACPI (MADT) for SMP configuration information
[    0.000000] SMP: Allowing 1 CPUs, 0 hotplug CPUs
[    0.000000] nr_irqs_gsi: 24
[    0.000000] PM: Registered nosave memory: 000000000009f000 - 00000000000a0000
[    0.000000] PM: Registered nosave memory: 00000000000a0000 - 00000000000e4000
[    0.000000] PM: Registered nosave memory: 00000000000e4000 - 0000000000100000
[    0.000000] Allocating PCI resources starting at 1f800000 (gap: 1f800000:df600000)
[    0.000000] Booting paravirtualized kernel on bare hardware
[    0.000000] NR_CPUS:32 nr_cpumask_bits:32 nr_cpu_ids:1 nr_node_ids:1
[    0.000000] PERCPU: Embedded 13 pages/cpu @c1c00000 s32088 r0 d21160 u4194304
[    0.000000] pcpu-alloc: s32088 r0 d21160 u4194304 alloc=1*4194304
[    0.000000] pcpu-alloc: [0] 0 
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[    0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-2.6.31eeepc root=/dev/sda2 ro rootfstype=ext4 no_console_suspend i915.modeset=1 resume=/dev/sda2 resume_offset=188416 init=/bin/bash
[    0.000000] Unknown boot option `i915.modeset=1': ignoring
[    0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes)
[    0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
[    0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
[    0.000000] Enabling fast FPU save and restore... done.
[    0.000000] Enabling unmasked SIMD FPU exception support... done.
[    0.000000] Initializing CPU#0
[    0.000000] Initializing HighMem for node 0 (00000000:00000000)
[    0.000000] Memory: 502436k/515584k available (2390k kernel code, 12296k reserved, 1319k data, 356k init, 0k highmem)
[    0.000000] virtual kernel memory layout:
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[    0.000000]     pkmap   : 0xff400000 - 0xff800000   (4096 kB)
[    0.000000]     vmalloc : 0xdff80000 - 0xff3fe000   ( 500 MB)
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[    0.000000]       .init : 0xc13a0000 - 0xc13f9000   ( 356 kB)
[    0.000000]       .data : 0xc1255afe - 0xc139fa68   (1319 kB)
[    0.000000]       .text : 0xc1000000 - 0xc1255afe   (2390 kB)
[    0.000000] Checking if this processor honours the WP bit even in supervisor mode...Ok.
[    0.000000] Hierarchical RCU implementation.
[    0.000000] NR_IRQS:1280
[    0.000000] Console: colour VGA+ 80x25
[    0.000000] console [tty0] enabled
[    0.000000] Fast TSC calibration using PIT
[    0.000000] Detected 630.015 MHz processor.
[    0.004010] Calibrating delay loop (skipped), value calculated using timer frequency.. 1260.03 BogoMIPS (lpj=2520060)
[    0.008114] Security Framework initialized
[    0.008220] SELinux:  Disabled at boot.
[    0.008348] Mount-cache hash table entries: 512
[    0.008760] Initializing cgroup subsys ns
[    0.008860] Initializing cgroup subsys cpuacct
[    0.008961] Initializing cgroup subsys devices
[    0.009058] Initializing cgroup subsys freezer
[    0.009153] Initializing cgroup subsys net_cls
[    0.009303] CPU: L1 I cache: 32K, L1 D cache: 32K
[    0.009446] CPU: L2 cache: 512K
[    0.009542] mce: CPU supports 5 MCE banks
[    0.009651] CPU0: Thermal monitoring enabled (TM1)
[    0.009764] Performance Events: p6 PMU driver.
[    0.009931] ... version:                0
[    0.010024] ... bit width:              32
[    0.010118] ... generic registers:      2
[    0.010211] ... value mask:             00000000ffffffff
[    0.010310] ... max period:             000000007fffffff
[    0.010408] ... fixed-purpose events:   0
[    0.010502] ... event mask:             0000000000000003
[    0.010608] Checking 'hlt' instruction... OK.
[    0.024948] SMP alternatives: switching to UP code
[    0.035538] Freeing SMP alternatives: 12k freed
[    0.035655] ACPI: Core revision 20090521
[    0.060707] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1
[    0.102319] CPU0: Intel(R) Celeron(R) M processor          900MHz stepping 08
[    0.104001] APIC calibration not consistent with PM-Timer: 136ms instead of 100ms
[    0.104001] APIC delta adjusted to PM-Timer: 437545 (595095)
[    0.104001] Brought up 1 CPUs
[    0.104001] Total of 1 processors activated (1260.03 BogoMIPS).
[    0.104001] CPU0 attaching NULL sched-domain.
[    0.104001] regulator: core version 0.5
[    0.104001] NET: Registered protocol family 16
[    0.104001] ACPI: bus type pci registered
[    0.104001] PCI: MCFG configuration 0: base e0000000 segment 0 buses 0 - 255
[    0.104001] PCI: Not using MMCONFIG.
[    0.104001] PCI: PCI BIOS revision 3.00 entry at 0xf0031, last bus=5
[    0.104001] PCI: Using configuration type 1 for base access
[    0.105290] bio: create slab <bio-0> at 0
[    0.107289] ACPI: EC: Look up EC in DSDT
[    0.128761] ACPI: Interpreter enabled
[    0.128881] ACPI: (supports S0 S1 S3 S4 S5)
[    0.129262] ACPI: Using IOAPIC for interrupt routing
[    0.129500] PCI: MCFG configuration 0: base e0000000 segment 0 buses 0 - 255
[    0.135742] PCI: MCFG area at e0000000 reserved in ACPI motherboard resources
[    0.135852] PCI: Using MMCONFIG for extended config space
[    0.149580] ACPI: EC: GPE = 0x18, I/O: command/status = 0x66, data = 0x62
[    0.149689] ACPI: EC: driver started in poll mode
[    0.150277] ACPI: No dock devices found.
[    0.150782] ACPI: PCI Root Bridge [PCI0] (0000:00)
[    0.151088] pci 0000:00:02.0: reg 10 32bit mmio: [0xf7f00000-0xf7f7ffff]
[    0.151103] pci 0000:00:02.0: reg 14 io port: [0xec00-0xec07]
[    0.151117] pci 0000:00:02.0: reg 18 32bit mmio pref: [0xd0000000-0xdfffffff]
[    0.151131] pci 0000:00:02.0: reg 1c 32bit mmio: [0xf7ec0000-0xf7efffff]
[    0.151206] pci 0000:00:02.1: reg 10 32bit mmio: [0xf7f80000-0xf7ffffff]
[    0.151357] pci 0000:00:1b.0: reg 10 64bit mmio: [0xf7eb8000-0xf7ebbfff]
[    0.151428] pci 0000:00:1b.0: PME# supported from D0 D3hot D3cold
[    0.151536] pci 0000:00:1b.0: PME# disabled
[    0.151732] pci 0000:00:1c.0: PME# supported from D0 D3hot D3cold
[    0.151837] pci 0000:00:1c.0: PME# disabled
[    0.152049] pci 0000:00:1c.1: PME# supported from D0 D3hot D3cold
[    0.152156] pci 0000:00:1c.1: PME# disabled
[    0.152355] pci 0000:00:1c.2: PME# supported from D0 D3hot D3cold
[    0.152460] pci 0000:00:1c.2: PME# disabled
[    0.152630] pci 0000:00:1d.0: reg 20 io port: [0xe400-0xe41f]
[    0.152714] pci 0000:00:1d.1: reg 20 io port: [0xe480-0xe49f]
[    0.152797] pci 0000:00:1d.2: reg 20 io port: [0xe800-0xe81f]
[    0.152880] pci 0000:00:1d.3: reg 20 io port: [0xe880-0xe89f]
[    0.152968] pci 0000:00:1d.7: reg 10 32bit mmio: [0xf7eb7c00-0xf7eb7fff]
[    0.153048] pci 0000:00:1d.7: PME# supported from D0 D3hot D3cold
[    0.153154] pci 0000:00:1d.7: PME# disabled
[    0.153427] pci 0000:00:1f.0: Force enabled HPET at 0xfed00000
[    0.153448] pci 0000:00:1f.0: quirk: region 0800-087f claimed by ICH6 ACPI/GPIO/TCO
[    0.153589] pci 0000:00:1f.0: quirk: region 0480-04bf claimed by ICH6 GPIO
[    0.153698] pci 0000:00:1f.0: LPC Generic IO decode 1 PIO at 0380-03ff
[    0.153856] pci 0000:00:1f.2: reg 10 io port: [0x00-0x07]
[    0.153870] pci 0000:00:1f.2: reg 14 io port: [0x00-0x03]
[    0.153884] pci 0000:00:1f.2: reg 18 io port: [0x00-0x07]
[    0.153898] pci 0000:00:1f.2: reg 1c io port: [0x00-0x03]
[    0.153913] pci 0000:00:1f.2: reg 20 io port: [0xffa0-0xffaf]
[    0.153955] pci 0000:00:1f.2: PME# supported from D3hot
[    0.154057] pci 0000:00:1f.2: PME# disabled
[    0.154217] pci 0000:00:1f.3: reg 20 io port: [0x400-0x41f]
[    0.154409] pci 0000:03:00.0: reg 10 64bit mmio: [0xfbfc0000-0xfbffffff]
[    0.154459] pci 0000:03:00.0: reg 30 32bit mmio pref: [0xfbfa0000-0xfbfbffff]
[    0.154516] pci 0000:03:00.0: PME# supported from D3hot D3cold
[    0.156011] pci 0000:03:00.0: PME# disabled
[    0.156180] pci 0000:00:1c.1: bridge 32bit mmio: [0xfbf00000-0xfbffffff]
[    0.156271] pci 0000:01:00.0: reg 10 64bit mmio: [0xfbef0000-0xfbefffff]
[    0.156446] pci 0000:00:1c.2: bridge 32bit mmio: [0xf8000000-0xfbefffff]
[    0.156461] pci 0000:00:1c.2: bridge 64bit mmio pref: [0xf0000000-0xf6ffffff]
[    0.156536] pci 0000:00:1e.0: transparent bridge
[    0.156670] pci_bus 0000:00: on NUMA node 0
[    0.156692] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
[    0.157130] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P3._PRT]
[    0.157287] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P5._PRT]
[    0.157427] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P6._PRT]
[    0.169807] ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 *5 6 7 10 11 12 14 15)
[    0.170792] ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 7 10 *11 12 14 15)
[    0.171762] ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 6 7 *10 11 12 14 15)
[    0.172727] ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 *7 10 11 12 14 15)
[    0.173695] ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 7 10 11 12 14 15) *0, disabled.
[    0.174791] ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 7 10 11 12 14 15) *0, disabled.
[    0.175889] ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 6 7 10 11 12 14 15) *0, disabled.
[    0.176994] ACPI: PCI Interrupt Link [LNKH] (IRQs *3 4 5 6 7 10 11 12 14 15)
[    0.177907] vgaarb: device added: PCI:0000:00:02.0,decodes=io+mem,owns=io+mem,locks=none
[    0.178069] vgaarb: loaded
[    0.178497] SCSI subsystem initialized
[    0.178735] libata version 3.00 loaded.
[    0.178908] PCI: Using ACPI for IRQ routing
[    0.179757] hpet clockevent registered
[    0.179767] HPET: 3 timers in total, 0 timers will be used for per-cpu timer
[    0.179882] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0
[    0.180181] hpet0: 3 comparators, 64-bit 14.318180 MHz counter
[    0.184027] Switching to clocksource tsc
[    0.187552] pnp: PnP ACPI init
[    0.187701] ACPI: bus type pnp registered
[    0.192924] pnp: PnP ACPI: found 13 devices
[    0.193021] ACPI: ACPI bus type pnp unregistered
[    0.193123] PnPBIOS: Disabled by ACPI PNP
[    0.193278] system 00:01: iomem range 0xfed13000-0xfed19fff has been reserved
[    0.193407] system 00:08: ioport range 0x380-0x383 has been reserved
[    0.193514] system 00:08: ioport range 0x4d0-0x4d1 has been reserved
[    0.193620] system 00:08: ioport range 0x800-0x87f has been reserved
[    0.193727] system 00:08: ioport range 0x480-0x4bf has been reserved
[    0.193835] system 00:08: iomem range 0xfed1c000-0xfed1ffff has been reserved
[    0.193945] system 00:08: iomem range 0xfed20000-0xfed8ffff has been reserved
[    0.194056] system 00:08: iomem range 0xfff00000-0xffffffff could not be reserved
[    0.194203] system 00:09: iomem range 0xfec00000-0xfec00fff could not be reserved
[    0.194343] system 00:09: iomem range 0xfee00000-0xfee00fff has been reserved
[    0.194462] system 00:0a: iomem range 0xe0000000-0xefffffff has been reserved
[    0.194579] system 00:0b: iomem range 0xe0000000-0xefffffff has been reserved
[    0.194695] system 00:0c: iomem range 0x0-0x9ffff could not be reserved
[    0.194803] system 00:0c: iomem range 0xc0000-0xcffff could not be reserved
[    0.194914] system 00:0c: iomem range 0xe0000-0xfffff could not be reserved
[    0.195024] system 00:0c: iomem range 0x100000-0x1f7fffff could not be reserved
[    0.231261] pci 0000:00:1c.0: PCI bridge, secondary bus 0000:04
[    0.231369] pci 0000:00:1c.0:   IO window: 0x1000-0x1fff
[    0.231474] pci 0000:00:1c.0:   MEM window: 0x20000000-0x201fffff
[    0.231581] pci 0000:00:1c.0:   PREFETCH window: 0x00000020200000-0x000000203fffff
[    0.231726] pci 0000:00:1c.1: PCI bridge, secondary bus 0000:03
[    0.231842] pci 0000:00:1c.1:   IO window: 0x2000-0x2fff
[    0.231947] pci 0000:00:1c.1:   MEM window: 0xfbf00000-0xfbffffff
[    0.232054] pci 0000:00:1c.1:   PREFETCH window: 0x00000020400000-0x000000205fffff
[    0.232198] pci 0000:00:1c.2: PCI bridge, secondary bus 0000:01
[    0.232303] pci 0000:00:1c.2:   IO window: 0x3000-0x3fff
[    0.232408] pci 0000:00:1c.2:   MEM window: 0xf8000000-0xfbefffff
[    0.232515] pci 0000:00:1c.2:   PREFETCH window: 0x000000f0000000-0x000000f6ffffff
[    0.232659] pci 0000:00:1e.0: PCI bridge, secondary bus 0000:05
[    0.232761] pci 0000:00:1e.0:   IO window: disabled
[    0.232864] pci 0000:00:1e.0:   MEM window: disabled
[    0.232964] pci 0000:00:1e.0:   PREFETCH window: disabled
[    0.233082] pci 0000:00:1c.0: enabling device (0104 -> 0107)
[    0.233201] pci 0000:00:1c.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[    0.233311] pci 0000:00:1c.0: setting latency timer to 64
[    0.233327] pci 0000:00:1c.1: enabling device (0106 -> 0107)
[    0.233434] pci 0000:00:1c.1: PCI INT B -> GSI 17 (level, low) -> IRQ 17
[    0.233542] pci 0000:00:1c.1: setting latency timer to 64
[    0.233557] pci 0000:00:1c.2: enabling device (0106 -> 0107)
[    0.233665] pci 0000:00:1c.2: PCI INT C -> GSI 18 (level, low) -> IRQ 18
[    0.233774] pci 0000:00:1c.2: setting latency timer to 64
[    0.233788] pci 0000:00:1e.0: setting latency timer to 64
[    0.233801] pci_bus 0000:00: resource 0 io:  [0x00-0xffff]
[    0.233810] pci_bus 0000:00: resource 1 mem: [0x000000-0xffffffff]
[    0.233820] pci_bus 0000:04: resource 0 io:  [0x1000-0x1fff]
[    0.233829] pci_bus 0000:04: resource 1 mem: [0x20000000-0x201fffff]
[    0.233838] pci_bus 0000:04: resource 2 pref mem [0x20200000-0x203fffff]
[    0.233848] pci_bus 0000:03: resource 0 io:  [0x2000-0x2fff]
[    0.233857] pci_bus 0000:03: resource 1 mem: [0xfbf00000-0xfbffffff]
[    0.233866] pci_bus 0000:03: resource 2 pref mem [0x20400000-0x205fffff]
[    0.233876] pci_bus 0000:01: resource 0 io:  [0x3000-0x3fff]
[    0.233885] pci_bus 0000:01: resource 1 mem: [0xf8000000-0xfbefffff]
[    0.233894] pci_bus 0000:01: resource 2 pref mem [0xf0000000-0xf6ffffff]
[    0.233904] pci_bus 0000:05: resource 3 io:  [0x00-0xffff]
[    0.233913] pci_bus 0000:05: resource 4 mem: [0x000000-0xffffffff]
[    0.234068] NET: Registered protocol family 2
[    0.234411] IP route cache hash table entries: 4096 (order: 2, 16384 bytes)
[    0.235326] TCP established hash table entries: 16384 (order: 5, 131072 bytes)
[    0.235726] TCP bind hash table entries: 16384 (order: 5, 131072 bytes)
[    0.236111] TCP: Hash tables configured (established 16384 bind 16384)
[    0.236217] TCP reno registered
[    0.236581] NET: Registered protocol family 1
[    0.236831] Unpacking initramfs...
[    0.487945] Freeing initrd memory: 2980k freed
[    0.493850] audit: initializing netlink socket (disabled)
[    0.494001] type=2000 audit(1266331887.491:1): initialized
[    0.494513] HugeTLB registered 4 MB page size, pre-allocated 0 pages
[    0.494853] VFS: Disk quotas dquot_6.5.2
[    0.495040] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[    0.495352] msgmni has been set to 987
[    0.495949] alg: No test for stdrng (krng)
[    0.496140] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 253)
[    0.496280] io scheduler noop registered
[    0.496374] io scheduler anticipatory registered
[    0.496470] io scheduler deadline registered
[    0.496601] io scheduler cfq registered (default)
[    0.496733] pci 0000:00:02.0: Boot video device
[    0.497135] pcieport-driver 0000:00:1c.0: irq 24 for MSI/MSI-X
[    0.497155] pcieport-driver 0000:00:1c.0: setting latency timer to 64
[    0.497400] pcieport-driver 0000:00:1c.1: irq 25 for MSI/MSI-X
[    0.497417] pcieport-driver 0000:00:1c.1: setting latency timer to 64
[    0.497651] pcieport-driver 0000:00:1c.2: irq 26 for MSI/MSI-X
[    0.497667] pcieport-driver 0000:00:1c.2: setting latency timer to 64
[    0.498101] isapnp: Scanning for PnP cards...
[    0.851963] isapnp: No Plug & Play device found
[    0.855293] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[    0.856555] PNP: PS/2 Controller [PNP0303:PS2K,PNP0f13:PS2M] at 0x60,0x64 irq 1,12
[    0.877617] serio: i8042 KBD port at 0x60,0x64 irq 1
[    0.877727] serio: i8042 AUX port at 0x60,0x64 irq 12
[    0.878071] mice: PS/2 mouse device common for all mice
[    0.878930] rtc_cmos 00:03: RTC can wake from S4
[    0.879121] rtc_cmos 00:03: rtc core: registered rtc_cmos as rtc0
[    0.879260] rtc0: alarms up to one month, 114 bytes nvram, hpet irqs
[    0.879396] cpuidle: using governor ladder
[    0.879490] cpuidle: using governor menu
[    0.879589] No iBFT detected.
[    0.880694] TCP cubic registered
[    0.880872] NET: Registered protocol family 10
[    0.882240] lo: Disabled Privacy Extensions
[    0.883269] Mobile IPv6
[    0.883360] NET: Registered protocol family 17
[    0.883500] Using IPI No-Shortcut mode
[    0.898223] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input0
[    0.917824] registered taskstats version 1
[    0.918510] rtc_cmos 00:03: setting system clock to 2010-02-16 14:51:28 UTC (1266331888)
[    0.918806] Freeing unused kernel memory: 356k freed
[    0.919389] Write protecting the kernel text: 2392k
[    0.919536] Write protecting the kernel read-only data: 928k
[    1.003758] ata_piix 0000:00:1f.2: version 2.13
[    1.003815] ata_piix 0000:00:1f.2: PCI INT B -> GSI 19 (level, low) -> IRQ 19
[    1.003986] ata_piix 0000:00:1f.2: MAP [ P0 P2 IDE IDE ]
[    1.004358] ata_piix 0000:00:1f.2: setting latency timer to 64
[    1.004540] scsi0 : ata_piix
[    1.004886] scsi1 : ata_piix
[    1.009412] ata1: SATA max UDMA/133 cmd 0x1f0 ctl 0x3f6 bmdma 0xffa0 irq 14
[    1.009523] ata2: PATA max UDMA/100 cmd 0x170 ctl 0x376 bmdma 0xffa8 irq 15
[    1.103840] Switched to high resolution mode on CPU 0
[    1.180377] ata2.00: CFA: SILICONMOTION SM223AC, , max UDMA/66
[    1.180483] ata2.00: 7815024 sectors, multi 0: LBA 
[    1.196318] ata2.00: configured for UDMA/66
[    1.196698] scsi 1:0:0:0: Direct-Access     ATA      SILICONMOTION SM n/a  PQ: 0 ANSI: 5
[    1.249334] ACPI: EC: non-query interrupt received, switching to interrupt mode
[    1.269516] thermal LNXTHERM:01: registered as thermal_zone0
[    1.269638] ACPI: Thermal Zone [TZ00] (52 C)
[    1.624225] sd 1:0:0:0: [sda] 7815024 512-byte logical blocks: (4.00 GB/3.72 GiB)
[    1.624505] sd 1:0:0:0: [sda] Write Protect is off
[    1.624606] sd 1:0:0:0: [sda] Mode Sense: 00 3a 00 00
[    1.624682] sd 1:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[    1.625201]  sda: sda1 sda2
[    1.627406] sd 1:0:0:0: [sda] Attached SCSI disk
[    1.726773] PM: Starting manual resume from disk
[    1.830772] EXT4-fs (sda2): delayed allocation enabled
[    1.830974] EXT4-fs: file extents enabled
[    1.831247] EXT4-fs: mballoc enabled
[    1.831377] EXT4-fs (sda2): mounted filesystem without journal
[   33.244766] EXT4-fs (sda2): warning: mounting unchecked fs, running e2fsck is recommended
[   33.246093] EXT4-fs (sda2): no journal
[   66.496623] Adding 358392k swap on /swapfile.  Priority:-1 extents:48 across:1567744k 
[   68.432097] Syncing filesystems ... done.
[   68.436096] Freezing user space processes ... (elapsed 0.00 seconds) done.
[   68.436299] Freezing remaining freezable tasks ... (elapsed 0.00 seconds) done.
[   68.436696] PM: Preallocating image memory... done (allocated 122032 pages)
[   68.693244] PM: Allocated 488128 kbytes in 0.25 seconds (1952.51 MB/s)
[   68.693835] ata_piix 0000:00:1f.2: PCI INT B disabled
[   68.695106] Disabling non-boot CPUs ...
[   68.695379] PM: Creating hibernation image: 
[   68.696008] PM: Need to copy 5137 pages
[   68.696008] PM: Hibernation image created (5137 pages copied)
[   68.696008] CPU0: Thermal LVT vector (0xfa) already installed
[   68.696008] Force enabled HPET at resume
[   68.703403] pci 0000:00:1e.0: setting latency timer to 64
[   68.703526] ata_piix 0000:00:1f.2: restoring config space at offset 0x1 (was 0x2b00001, writing 0x2b00005)
[   68.703638] ata_piix 0000:00:1f.2: PCI INT B -> GSI 19 (level, low) -> IRQ 19
[   68.703721] ata_piix 0000:00:1f.2: setting latency timer to 64
[   68.710309] sd 1:0:0:0: [sda] Starting disk
[   68.876379] ata2.00: ACPI cmd ef/03:44:00:00:00:a0 (SET FEATURES) filtered out
[   68.876465] ata2.00: ACPI cmd ef/03:0c:00:00:00:a0 (SET FEATURES) filtered out
[   68.892319] ata2.00: configured for UDMA/66
[   68.978249] Restarting tasks ... done.
[   70.404093] Syncing filesystems ... done.
[   70.408090] Freezing user space processes ... (elapsed 0.00 seconds) done.
[   70.408300] Freezing remaining freezable tasks ... (elapsed 0.00 seconds) done.
[   70.408689] PM: Preallocating image memory... done (allocated 123273 pages)
[   71.325465] PM: Allocated 493092 kbytes in 0.91 seconds (541.85 MB/s)
[   71.326053] ata_piix 0000:00:1f.2: PCI INT B disabled
[   71.327436] kthreadd: page allocation failure. order:1, mode:0xd0
[   71.327519] Pid: 2, comm: kthreadd Not tainted 2.6.31eeepc #48
[   71.327592] Call Trace:
[   71.327671]  [<c10848f4>] ? __alloc_pages_nodemask+0x423/0x490
[   71.327755]  [<c103fb65>] ? kthread+0x0/0x64
[   71.327826]  [<c108496d>] ? __get_free_pages+0xc/0x17
[   71.327904]  [<c102d74f>] ? copy_process+0x99/0xf35
[   71.327978]  [<c103fb65>] ? kthread+0x0/0x64
[   71.328084]  [<c102e71f>] ? do_fork+0x134/0x297
[   71.328158]  [<c1001e00>] ? __switch_to+0x6f/0xe2
[   71.328231]  [<c103fb65>] ? kthread+0x0/0x64
[   71.328301]  [<c1001d89>] ? kernel_thread+0x7a/0x82
[   71.328374]  [<c103fb65>] ? kthread+0x0/0x64
[   71.328447]  [<c1003be0>] ? kernel_thread_helper+0x0/0x10
[   71.328523]  [<c103fb36>] ? kthreadd+0x8a/0xb9
[   71.328593]  [<c103faac>] ? kthreadd+0x0/0xb9
[   71.328665]  [<c1003be7>] ? kernel_thread_helper+0x7/0x10
[   71.328765] Mem-Info:
[   71.328851] DMA per-cpu:
[   71.328939] CPU    0: hi:    0, btch:   1 usd:   0
[   71.329036] Normal per-cpu:
[   71.329127] CPU    0: hi:  186, btch:  31 usd:   0
[   71.329236] active_anon:0 inactive_anon:0 isolated_anon:0
[   71.329240]  active_file:0 inactive_file:10 isolated_file:0
[   71.329244]  unevictable:1058 dirty:0 writeback:0 unstable:0 buffer:10
[   71.329249]  free:1267 slab_reclaimable:189 slab_unreclaimable:430
[   71.329253]  mapped:931 shmem:0 pagetables:9 bounce:0
[   71.329745] DMA free:2012kB min:88kB low:108kB high:132kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15804kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
[   71.330118] lowmem_reserve[]: 0 483 483 483
[   71.330454] Normal free:3056kB min:2764kB low:3452kB high:4144kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:40kB unevictable:4232kB isolated(anon):0kB isolated(file):0kB present:495300kB mlocked:4232kB dirty:0kB writeback:0kB mapped:3724kB shmem:0kB slab_reclaimable:756kB slab_unreclaimable:1720kB kernel_stack:232kB pagetables:36kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
[   71.330835] lowmem_reserve[]: 0 0 0 0
[   71.331154] DMA: 1*4kB 1*8kB 1*16kB 0*32kB 1*64kB 1*128kB 1*256kB 1*512kB 1*1024kB 0*2048kB 0*4096kB = 2012kB
[   71.331854] Normal: 26*4kB 9*8kB 4*16kB 0*32kB 0*64kB 0*128kB 1*256kB 1*512kB 0*1024kB 1*2048kB 0*4096kB = 3056kB
[   71.332569] 940 total pagecache pages
[   71.332661] 0 pages in swap cache
[   71.332752] Swap cache stats: add 91, delete 91, find 0/0
[   71.332851] Free swap  = 358028kB
[   71.332941] Total swap = 358392kB
[   71.338499] 128880 pages RAM
[   71.338591] 0 pages HighMem
[   71.338679] 2332 pages reserved
[   71.338767] 1079 pages shared
[   71.338855] 124261 pages non-shared
[   71.433571] pci 0000:00:1e.0: setting latency timer to 64
[   71.433731] ata_piix 0000:00:1f.2: restoring config space at offset 0x1 (was 0x2b00001, writing 0x2b00005)
[   71.433903] ata_piix 0000:00:1f.2: PCI INT B -> GSI 19 (level, low) -> IRQ 19
[   71.434013] ata_piix 0000:00:1f.2: setting latency timer to 64
[   71.440327] sd 1:0:0:0: [sda] Starting disk
[   71.612382] ata2.00: ACPI cmd ef/03:44:00:00:00:a0 (SET FEATURES) filtered out
[   71.612526] ata2.00: ACPI cmd ef/03:0c:00:00:00:a0 (SET FEATURES) filtered out
[   71.628319] ata2.00: configured for UDMA/66
[   71.629042] Restarting tasks ... done.

[-- Attachment #3: Type: text/plain, Size: 0 bytes --]

Re: s2disk hang update

[Alan Jenkins]

[-- Attachment #1: Type: text/plain, Size: 1414 bytes --]

On 2/16/10, Alan Jenkins <sourcejedi.lkml@googlemail.com> wrote:
> On 2/15/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> On Tuesday 09 February 2010, Alan Jenkins wrote:
>>> Perhaps I spoke too soon.  I see the same hang if I run too many
>>> applications.  The first hibernation fails with "not enough swap" as
>>> expected, but the second or third attempt hangs (with the same backtrace
>>> as before).
>>>
>>> The patch definitely helps though.  Without the patch, I see a hang the
>>> first time I try to hibernate with too many applications running.
>>
>> Well, I have an idea.
>>
>> Can you try to apply the appended patch in addition and see if that
>> helps?
>>
>> Rafael
>
> It doesn't seem to help.

To be clear: It doesn't stop the hang when I hibernate with too many
applications.

It does stop the same hang in a different case though.

1. boot with init=/bin/bash
2. run s2disk
3. cancel the s2disk
4. repeat steps 2&3

With the patch, I can run 10s of iterations, with no hang.
Without the patch, it soon hangs, (in disable_nonboot_cpus(), as always).

That's what happens on 2.6.33-rc7.  On 2.6.30, there is no problem.
On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an allocation
failure after a couple of iterations ("kthreadd: page allocation
failure. order:1, mode:0xd0").  It looks like it might be the same
stop_machine thread allocation failure that causes the hang.

Regards
Alan

[-- Attachment #2: graceful-allocation-failure.txt --]
[-- Type: text/plain, Size: 30282 bytes --]

[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Linux version 2.6.31eeepc (alan@alan-desktop-karmic) (gcc version 4.4.1 (Ubuntu 4.4.1-4ubuntu8) ) #48 SMP Tue Dec 1 14:37:15 GMT 2009
[    0.000000] KERNEL supported cpus:
[    0.000000]   Intel GenuineIntel
[    0.000000]   AMD AuthenticAMD
[    0.000000]   NSC Geode by NSC
[    0.000000]   Cyrix CyrixInstead
[    0.000000]   Centaur CentaurHauls
[    0.000000]   Transmeta GenuineTMx86
[    0.000000]   Transmeta TransmetaCPU
[    0.000000]   UMC UMC UMC UMC
[    0.000000] BIOS-provided physical RAM map:
[    0.000000]  BIOS-e820: 0000000000000000 - 000000000009fc00 (usable)
[    0.000000]  BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved)
[    0.000000]  BIOS-e820: 00000000000e4000 - 0000000000100000 (reserved)
[    0.000000]  BIOS-e820: 0000000000100000 - 000000001f780000 (usable)
[    0.000000]  BIOS-e820: 000000001f780000 - 000000001f790000 (ACPI data)
[    0.000000]  BIOS-e820: 000000001f790000 - 000000001f7d0000 (ACPI NVS)
[    0.000000]  BIOS-e820: 000000001f7d0000 - 000000001f7de000 (reserved)
[    0.000000]  BIOS-e820: 000000001f7e0000 - 000000001f800000 (reserved)
[    0.000000]  BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
[    0.000000]  BIOS-e820: 00000000fff80000 - 0000000100000000 (reserved)
[    0.000000] DMI present.
[    0.000000] AMI BIOS detected: BIOS may corrupt low RAM, working around it.
[    0.000000] e820 update range: 0000000000000000 - 0000000000010000 (usable) ==> (reserved)
[    0.000000] last_pfn = 0x1f780 max_arch_pfn = 0x100000
[    0.000000] MTRR default type: uncachable
[    0.000000] MTRR fixed ranges enabled:
[    0.000000]   00000-9FFFF write-back
[    0.000000]   A0000-DFFFF uncachable
[    0.000000]   E0000-EFFFF write-through
[    0.000000]   F0000-FFFFF write-protect
[    0.000000] MTRR variable ranges enabled:
[    0.000000]   0 base 000000000 mask FE0000000 write-back
[    0.000000]   1 base 01F800000 mask FFF800000 uncachable
[    0.000000]   2 disabled
[    0.000000]   3 disabled
[    0.000000]   4 disabled
[    0.000000]   5 disabled
[    0.000000]   6 disabled
[    0.000000]   7 disabled
[    0.000000] PAT not supported by CPU.
[    0.000000] initial memory mapped : 0 - 01800000
[    0.000000] init_memory_mapping: 0000000000000000-000000001f780000
[    0.000000]  0000000000 - 0000400000 page 4k
[    0.000000]  0000400000 - 001f400000 page 2M
[    0.000000]  001f400000 - 001f780000 page 4k
[    0.000000] kernel direct mapping tables up to 1f780000 @ 10000-16000
[    0.000000] RAMDISK: 176f6000 - 179df1f6
[    0.000000] ACPI: RSDP 000fbe50 00014 (v00 ACPIAM)
[    0.000000] ACPI: RSDT 1f780000 00034 (v01 A M I  OEMRSDT  03000911 MSFT 00000097)
[    0.000000] ACPI: FACP 1f780200 00081 (v01 A M I  OEMFACP  03000911 MSFT 00000097)
[    0.000000] ACPI: DSDT 1f780400 06069 (v01  A0797 A0797000 00000000 INTL 20060113)
[    0.000000] ACPI: FACS 1f790000 00040
[    0.000000] ACPI: APIC 1f780390 00068 (v01 A M I  OEMAPIC  03000911 MSFT 00000097)
[    0.000000] ACPI: OEMB 1f790040 00046 (v01 A M I  AMI_OEM  03000911 MSFT 00000097)
[    0.000000] ACPI: MCFG 1f786470 0003C (v01 A M I  OEMMCFG  03000911 MSFT 00000097)
[    0.000000] ACPI: Local APIC address 0xfee00000
[    0.000000] 0MB HIGHMEM available.
[    0.000000] 503MB LOWMEM available.
[    0.000000]   mapped low ram: 0 - 1f780000
[    0.000000]   low ram: 0 - 1f780000
[    0.000000]   node 0 low ram: 00000000 - 1f780000
[    0.000000]   node 0 bootmap 00012000 - 00015ef0
[    0.000000] (9 early reservations) ==> bootmem [0000000000 - 001f780000]
[    0.000000]   #0 [0000000000 - 0000001000]   BIOS data page ==> [0000000000 - 0000001000]
[    0.000000]   #1 [0000001000 - 0000002000]    EX TRAMPOLINE ==> [0000001000 - 0000002000]
[    0.000000]   #2 [0000006000 - 0000007000]       TRAMPOLINE ==> [0000006000 - 0000007000]
[    0.000000]   #3 [0001000000 - 00014a5f90]    TEXT DATA BSS ==> [0001000000 - 00014a5f90]
[    0.000000]   #4 [00176f6000 - 00179df1f6]          RAMDISK ==> [00176f6000 - 00179df1f6]
[    0.000000]   #5 [000009fc00 - 0000100000]    BIOS reserved ==> [000009fc00 - 0000100000]
[    0.000000]   #6 [00014a6000 - 00014ac1f4]              BRK ==> [00014a6000 - 00014ac1f4]
[    0.000000]   #7 [0000010000 - 0000012000]          PGTABLE ==> [0000010000 - 0000012000]
[    0.000000]   #8 [0000012000 - 0000016000]          BOOTMAP ==> [0000012000 - 0000016000]
[    0.000000] found SMP MP-table at [c00ff780] ff780
[    0.000000] Zone PFN ranges:
[    0.000000]   DMA      0x00000010 -> 0x00001000
[    0.000000]   Normal   0x00001000 -> 0x0001f780
[    0.000000]   HighMem  0x0001f780 -> 0x0001f780
[    0.000000] Movable zone start PFN for each node
[    0.000000] early_node_map[2] active PFN ranges
[    0.000000]     0: 0x00000010 -> 0x0000009f
[    0.000000]     0: 0x00000100 -> 0x0001f780
[    0.000000] On node 0 totalpages: 128783
[    0.000000] free_area_init_node: node 0, pgdat c1396960, node_mem_map c14ae200
[    0.000000]   DMA zone: 32 pages used for memmap
[    0.000000]   DMA zone: 0 pages reserved
[    0.000000]   DMA zone: 3951 pages, LIFO batch:0
[    0.000000]   Normal zone: 975 pages used for memmap
[    0.000000]   Normal zone: 123825 pages, LIFO batch:31
[    0.000000] Using APIC driver default
[    0.000000] ACPI: PM-Timer IO Port: 0x808
[    0.000000] ACPI: Local APIC address 0xfee00000
[    0.000000] ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled)
[    0.000000] ACPI: IOAPIC (id[0x01] address[0xfec00000] gsi_base[0])
[    0.000000] IOAPIC[0]: apic_id 1, version 32, address 0xfec00000, GSI 0-23
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[    0.000000] ACPI: IRQ0 used by override.
[    0.000000] ACPI: IRQ2 used by override.
[    0.000000] ACPI: IRQ9 used by override.
[    0.000000] Enabling APIC mode:  Flat.  Using 1 I/O APICs
[    0.000000] Using ACPI (MADT) for SMP configuration information
[    0.000000] SMP: Allowing 1 CPUs, 0 hotplug CPUs
[    0.000000] nr_irqs_gsi: 24
[    0.000000] PM: Registered nosave memory: 000000000009f000 - 00000000000a0000
[    0.000000] PM: Registered nosave memory: 00000000000a0000 - 00000000000e4000
[    0.000000] PM: Registered nosave memory: 00000000000e4000 - 0000000000100000
[    0.000000] Allocating PCI resources starting at 1f800000 (gap: 1f800000:df600000)
[    0.000000] Booting paravirtualized kernel on bare hardware
[    0.000000] NR_CPUS:32 nr_cpumask_bits:32 nr_cpu_ids:1 nr_node_ids:1
[    0.000000] PERCPU: Embedded 13 pages/cpu @c1c00000 s32088 r0 d21160 u4194304
[    0.000000] pcpu-alloc: s32088 r0 d21160 u4194304 alloc=1*4194304
[    0.000000] pcpu-alloc: [0] 0 
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 127776
[    0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-2.6.31eeepc root=/dev/sda2 ro rootfstype=ext4 no_console_suspend i915.modeset=1 resume=/dev/sda2 resume_offset=188416 init=/bin/bash
[    0.000000] Unknown boot option `i915.modeset=1': ignoring
[    0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes)
[    0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
[    0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
[    0.000000] Enabling fast FPU save and restore... done.
[    0.000000] Enabling unmasked SIMD FPU exception support... done.
[    0.000000] Initializing CPU#0
[    0.000000] Initializing HighMem for node 0 (00000000:00000000)
[    0.000000] Memory: 502436k/515584k available (2390k kernel code, 12296k reserved, 1319k data, 356k init, 0k highmem)
[    0.000000] virtual kernel memory layout:
[    0.000000]     fixmap  : 0xffd56000 - 0xfffff000   (2724 kB)
[    0.000000]     pkmap   : 0xff400000 - 0xff800000   (4096 kB)
[    0.000000]     vmalloc : 0xdff80000 - 0xff3fe000   ( 500 MB)
[    0.000000]     lowmem  : 0xc0000000 - 0xdf780000   ( 503 MB)
[    0.000000]       .init : 0xc13a0000 - 0xc13f9000   ( 356 kB)
[    0.000000]       .data : 0xc1255afe - 0xc139fa68   (1319 kB)
[    0.000000]       .text : 0xc1000000 - 0xc1255afe   (2390 kB)
[    0.000000] Checking if this processor honours the WP bit even in supervisor mode...Ok.
[    0.000000] Hierarchical RCU implementation.
[    0.000000] NR_IRQS:1280
[    0.000000] Console: colour VGA+ 80x25
[    0.000000] console [tty0] enabled
[    0.000000] Fast TSC calibration using PIT
[    0.000000] Detected 630.015 MHz processor.
[    0.004010] Calibrating delay loop (skipped), value calculated using timer frequency.. 1260.03 BogoMIPS (lpj=2520060)
[    0.008114] Security Framework initialized
[    0.008220] SELinux:  Disabled at boot.
[    0.008348] Mount-cache hash table entries: 512
[    0.008760] Initializing cgroup subsys ns
[    0.008860] Initializing cgroup subsys cpuacct
[    0.008961] Initializing cgroup subsys devices
[    0.009058] Initializing cgroup subsys freezer
[    0.009153] Initializing cgroup subsys net_cls
[    0.009303] CPU: L1 I cache: 32K, L1 D cache: 32K
[    0.009446] CPU: L2 cache: 512K
[    0.009542] mce: CPU supports 5 MCE banks
[    0.009651] CPU0: Thermal monitoring enabled (TM1)
[    0.009764] Performance Events: p6 PMU driver.
[    0.009931] ... version:                0
[    0.010024] ... bit width:              32
[    0.010118] ... generic registers:      2
[    0.010211] ... value mask:             00000000ffffffff
[    0.010310] ... max period:             000000007fffffff
[    0.010408] ... fixed-purpose events:   0
[    0.010502] ... event mask:             0000000000000003
[    0.010608] Checking 'hlt' instruction... OK.
[    0.024948] SMP alternatives: switching to UP code
[    0.035538] Freeing SMP alternatives: 12k freed
[    0.035655] ACPI: Core revision 20090521
[    0.060707] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1
[    0.102319] CPU0: Intel(R) Celeron(R) M processor          900MHz stepping 08
[    0.104001] APIC calibration not consistent with PM-Timer: 136ms instead of 100ms
[    0.104001] APIC delta adjusted to PM-Timer: 437545 (595095)
[    0.104001] Brought up 1 CPUs
[    0.104001] Total of 1 processors activated (1260.03 BogoMIPS).
[    0.104001] CPU0 attaching NULL sched-domain.
[    0.104001] regulator: core version 0.5
[    0.104001] NET: Registered protocol family 16
[    0.104001] ACPI: bus type pci registered
[    0.104001] PCI: MCFG configuration 0: base e0000000 segment 0 buses 0 - 255
[    0.104001] PCI: Not using MMCONFIG.
[    0.104001] PCI: PCI BIOS revision 3.00 entry at 0xf0031, last bus=5
[    0.104001] PCI: Using configuration type 1 for base access
[    0.105290] bio: create slab <bio-0> at 0
[    0.107289] ACPI: EC: Look up EC in DSDT
[    0.128761] ACPI: Interpreter enabled
[    0.128881] ACPI: (supports S0 S1 S3 S4 S5)
[    0.129262] ACPI: Using IOAPIC for interrupt routing
[    0.129500] PCI: MCFG configuration 0: base e0000000 segment 0 buses 0 - 255
[    0.135742] PCI: MCFG area at e0000000 reserved in ACPI motherboard resources
[    0.135852] PCI: Using MMCONFIG for extended config space
[    0.149580] ACPI: EC: GPE = 0x18, I/O: command/status = 0x66, data = 0x62
[    0.149689] ACPI: EC: driver started in poll mode
[    0.150277] ACPI: No dock devices found.
[    0.150782] ACPI: PCI Root Bridge [PCI0] (0000:00)
[    0.151088] pci 0000:00:02.0: reg 10 32bit mmio: [0xf7f00000-0xf7f7ffff]
[    0.151103] pci 0000:00:02.0: reg 14 io port: [0xec00-0xec07]
[    0.151117] pci 0000:00:02.0: reg 18 32bit mmio pref: [0xd0000000-0xdfffffff]
[    0.151131] pci 0000:00:02.0: reg 1c 32bit mmio: [0xf7ec0000-0xf7efffff]
[    0.151206] pci 0000:00:02.1: reg 10 32bit mmio: [0xf7f80000-0xf7ffffff]
[    0.151357] pci 0000:00:1b.0: reg 10 64bit mmio: [0xf7eb8000-0xf7ebbfff]
[    0.151428] pci 0000:00:1b.0: PME# supported from D0 D3hot D3cold
[    0.151536] pci 0000:00:1b.0: PME# disabled
[    0.151732] pci 0000:00:1c.0: PME# supported from D0 D3hot D3cold
[    0.151837] pci 0000:00:1c.0: PME# disabled
[    0.152049] pci 0000:00:1c.1: PME# supported from D0 D3hot D3cold
[    0.152156] pci 0000:00:1c.1: PME# disabled
[    0.152355] pci 0000:00:1c.2: PME# supported from D0 D3hot D3cold
[    0.152460] pci 0000:00:1c.2: PME# disabled
[    0.152630] pci 0000:00:1d.0: reg 20 io port: [0xe400-0xe41f]
[    0.152714] pci 0000:00:1d.1: reg 20 io port: [0xe480-0xe49f]
[    0.152797] pci 0000:00:1d.2: reg 20 io port: [0xe800-0xe81f]
[    0.152880] pci 0000:00:1d.3: reg 20 io port: [0xe880-0xe89f]
[    0.152968] pci 0000:00:1d.7: reg 10 32bit mmio: [0xf7eb7c00-0xf7eb7fff]
[    0.153048] pci 0000:00:1d.7: PME# supported from D0 D3hot D3cold
[    0.153154] pci 0000:00:1d.7: PME# disabled
[    0.153427] pci 0000:00:1f.0: Force enabled HPET at 0xfed00000
[    0.153448] pci 0000:00:1f.0: quirk: region 0800-087f claimed by ICH6 ACPI/GPIO/TCO
[    0.153589] pci 0000:00:1f.0: quirk: region 0480-04bf claimed by ICH6 GPIO
[    0.153698] pci 0000:00:1f.0: LPC Generic IO decode 1 PIO at 0380-03ff
[    0.153856] pci 0000:00:1f.2: reg 10 io port: [0x00-0x07]
[    0.153870] pci 0000:00:1f.2: reg 14 io port: [0x00-0x03]
[    0.153884] pci 0000:00:1f.2: reg 18 io port: [0x00-0x07]
[    0.153898] pci 0000:00:1f.2: reg 1c io port: [0x00-0x03]
[    0.153913] pci 0000:00:1f.2: reg 20 io port: [0xffa0-0xffaf]
[    0.153955] pci 0000:00:1f.2: PME# supported from D3hot
[    0.154057] pci 0000:00:1f.2: PME# disabled
[    0.154217] pci 0000:00:1f.3: reg 20 io port: [0x400-0x41f]
[    0.154409] pci 0000:03:00.0: reg 10 64bit mmio: [0xfbfc0000-0xfbffffff]
[    0.154459] pci 0000:03:00.0: reg 30 32bit mmio pref: [0xfbfa0000-0xfbfbffff]
[    0.154516] pci 0000:03:00.0: PME# supported from D3hot D3cold
[    0.156011] pci 0000:03:00.0: PME# disabled
[    0.156180] pci 0000:00:1c.1: bridge 32bit mmio: [0xfbf00000-0xfbffffff]
[    0.156271] pci 0000:01:00.0: reg 10 64bit mmio: [0xfbef0000-0xfbefffff]
[    0.156446] pci 0000:00:1c.2: bridge 32bit mmio: [0xf8000000-0xfbefffff]
[    0.156461] pci 0000:00:1c.2: bridge 64bit mmio pref: [0xf0000000-0xf6ffffff]
[    0.156536] pci 0000:00:1e.0: transparent bridge
[    0.156670] pci_bus 0000:00: on NUMA node 0
[    0.156692] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
[    0.157130] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P3._PRT]
[    0.157287] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P5._PRT]
[    0.157427] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P6._PRT]
[    0.169807] ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 *5 6 7 10 11 12 14 15)
[    0.170792] ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 7 10 *11 12 14 15)
[    0.171762] ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 6 7 *10 11 12 14 15)
[    0.172727] ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 *7 10 11 12 14 15)
[    0.173695] ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 7 10 11 12 14 15) *0, disabled.
[    0.174791] ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 7 10 11 12 14 15) *0, disabled.
[    0.175889] ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 6 7 10 11 12 14 15) *0, disabled.
[    0.176994] ACPI: PCI Interrupt Link [LNKH] (IRQs *3 4 5 6 7 10 11 12 14 15)
[    0.177907] vgaarb: device added: PCI:0000:00:02.0,decodes=io+mem,owns=io+mem,locks=none
[    0.178069] vgaarb: loaded
[    0.178497] SCSI subsystem initialized
[    0.178735] libata version 3.00 loaded.
[    0.178908] PCI: Using ACPI for IRQ routing
[    0.179757] hpet clockevent registered
[    0.179767] HPET: 3 timers in total, 0 timers will be used for per-cpu timer
[    0.179882] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0
[    0.180181] hpet0: 3 comparators, 64-bit 14.318180 MHz counter
[    0.184027] Switching to clocksource tsc
[    0.187552] pnp: PnP ACPI init
[    0.187701] ACPI: bus type pnp registered
[    0.192924] pnp: PnP ACPI: found 13 devices
[    0.193021] ACPI: ACPI bus type pnp unregistered
[    0.193123] PnPBIOS: Disabled by ACPI PNP
[    0.193278] system 00:01: iomem range 0xfed13000-0xfed19fff has been reserved
[    0.193407] system 00:08: ioport range 0x380-0x383 has been reserved
[    0.193514] system 00:08: ioport range 0x4d0-0x4d1 has been reserved
[    0.193620] system 00:08: ioport range 0x800-0x87f has been reserved
[    0.193727] system 00:08: ioport range 0x480-0x4bf has been reserved
[    0.193835] system 00:08: iomem range 0xfed1c000-0xfed1ffff has been reserved
[    0.193945] system 00:08: iomem range 0xfed20000-0xfed8ffff has been reserved
[    0.194056] system 00:08: iomem range 0xfff00000-0xffffffff could not be reserved
[    0.194203] system 00:09: iomem range 0xfec00000-0xfec00fff could not be reserved
[    0.194343] system 00:09: iomem range 0xfee00000-0xfee00fff has been reserved
[    0.194462] system 00:0a: iomem range 0xe0000000-0xefffffff has been reserved
[    0.194579] system 00:0b: iomem range 0xe0000000-0xefffffff has been reserved
[    0.194695] system 00:0c: iomem range 0x0-0x9ffff could not be reserved
[    0.194803] system 00:0c: iomem range 0xc0000-0xcffff could not be reserved
[    0.194914] system 00:0c: iomem range 0xe0000-0xfffff could not be reserved
[    0.195024] system 00:0c: iomem range 0x100000-0x1f7fffff could not be reserved
[    0.231261] pci 0000:00:1c.0: PCI bridge, secondary bus 0000:04
[    0.231369] pci 0000:00:1c.0:   IO window: 0x1000-0x1fff
[    0.231474] pci 0000:00:1c.0:   MEM window: 0x20000000-0x201fffff
[    0.231581] pci 0000:00:1c.0:   PREFETCH window: 0x00000020200000-0x000000203fffff
[    0.231726] pci 0000:00:1c.1: PCI bridge, secondary bus 0000:03
[    0.231842] pci 0000:00:1c.1:   IO window: 0x2000-0x2fff
[    0.231947] pci 0000:00:1c.1:   MEM window: 0xfbf00000-0xfbffffff
[    0.232054] pci 0000:00:1c.1:   PREFETCH window: 0x00000020400000-0x000000205fffff
[    0.232198] pci 0000:00:1c.2: PCI bridge, secondary bus 0000:01
[    0.232303] pci 0000:00:1c.2:   IO window: 0x3000-0x3fff
[    0.232408] pci 0000:00:1c.2:   MEM window: 0xf8000000-0xfbefffff
[    0.232515] pci 0000:00:1c.2:   PREFETCH window: 0x000000f0000000-0x000000f6ffffff
[    0.232659] pci 0000:00:1e.0: PCI bridge, secondary bus 0000:05
[    0.232761] pci 0000:00:1e.0:   IO window: disabled
[    0.232864] pci 0000:00:1e.0:   MEM window: disabled
[    0.232964] pci 0000:00:1e.0:   PREFETCH window: disabled
[    0.233082] pci 0000:00:1c.0: enabling device (0104 -> 0107)
[    0.233201] pci 0000:00:1c.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[    0.233311] pci 0000:00:1c.0: setting latency timer to 64
[    0.233327] pci 0000:00:1c.1: enabling device (0106 -> 0107)
[    0.233434] pci 0000:00:1c.1: PCI INT B -> GSI 17 (level, low) -> IRQ 17
[    0.233542] pci 0000:00:1c.1: setting latency timer to 64
[    0.233557] pci 0000:00:1c.2: enabling device (0106 -> 0107)
[    0.233665] pci 0000:00:1c.2: PCI INT C -> GSI 18 (level, low) -> IRQ 18
[    0.233774] pci 0000:00:1c.2: setting latency timer to 64
[    0.233788] pci 0000:00:1e.0: setting latency timer to 64
[    0.233801] pci_bus 0000:00: resource 0 io:  [0x00-0xffff]
[    0.233810] pci_bus 0000:00: resource 1 mem: [0x000000-0xffffffff]
[    0.233820] pci_bus 0000:04: resource 0 io:  [0x1000-0x1fff]
[    0.233829] pci_bus 0000:04: resource 1 mem: [0x20000000-0x201fffff]
[    0.233838] pci_bus 0000:04: resource 2 pref mem [0x20200000-0x203fffff]
[    0.233848] pci_bus 0000:03: resource 0 io:  [0x2000-0x2fff]
[    0.233857] pci_bus 0000:03: resource 1 mem: [0xfbf00000-0xfbffffff]
[    0.233866] pci_bus 0000:03: resource 2 pref mem [0x20400000-0x205fffff]
[    0.233876] pci_bus 0000:01: resource 0 io:  [0x3000-0x3fff]
[    0.233885] pci_bus 0000:01: resource 1 mem: [0xf8000000-0xfbefffff]
[    0.233894] pci_bus 0000:01: resource 2 pref mem [0xf0000000-0xf6ffffff]
[    0.233904] pci_bus 0000:05: resource 3 io:  [0x00-0xffff]
[    0.233913] pci_bus 0000:05: resource 4 mem: [0x000000-0xffffffff]
[    0.234068] NET: Registered protocol family 2
[    0.234411] IP route cache hash table entries: 4096 (order: 2, 16384 bytes)
[    0.235326] TCP established hash table entries: 16384 (order: 5, 131072 bytes)
[    0.235726] TCP bind hash table entries: 16384 (order: 5, 131072 bytes)
[    0.236111] TCP: Hash tables configured (established 16384 bind 16384)
[    0.236217] TCP reno registered
[    0.236581] NET: Registered protocol family 1
[    0.236831] Unpacking initramfs...
[    0.487945] Freeing initrd memory: 2980k freed
[    0.493850] audit: initializing netlink socket (disabled)
[    0.494001] type=2000 audit(1266331887.491:1): initialized
[    0.494513] HugeTLB registered 4 MB page size, pre-allocated 0 pages
[    0.494853] VFS: Disk quotas dquot_6.5.2
[    0.495040] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[    0.495352] msgmni has been set to 987
[    0.495949] alg: No test for stdrng (krng)
[    0.496140] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 253)
[    0.496280] io scheduler noop registered
[    0.496374] io scheduler anticipatory registered
[    0.496470] io scheduler deadline registered
[    0.496601] io scheduler cfq registered (default)
[    0.496733] pci 0000:00:02.0: Boot video device
[    0.497135] pcieport-driver 0000:00:1c.0: irq 24 for MSI/MSI-X
[    0.497155] pcieport-driver 0000:00:1c.0: setting latency timer to 64
[    0.497400] pcieport-driver 0000:00:1c.1: irq 25 for MSI/MSI-X
[    0.497417] pcieport-driver 0000:00:1c.1: setting latency timer to 64
[    0.497651] pcieport-driver 0000:00:1c.2: irq 26 for MSI/MSI-X
[    0.497667] pcieport-driver 0000:00:1c.2: setting latency timer to 64
[    0.498101] isapnp: Scanning for PnP cards...
[    0.851963] isapnp: No Plug & Play device found
[    0.855293] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[    0.856555] PNP: PS/2 Controller [PNP0303:PS2K,PNP0f13:PS2M] at 0x60,0x64 irq 1,12
[    0.877617] serio: i8042 KBD port at 0x60,0x64 irq 1
[    0.877727] serio: i8042 AUX port at 0x60,0x64 irq 12
[    0.878071] mice: PS/2 mouse device common for all mice
[    0.878930] rtc_cmos 00:03: RTC can wake from S4
[    0.879121] rtc_cmos 00:03: rtc core: registered rtc_cmos as rtc0
[    0.879260] rtc0: alarms up to one month, 114 bytes nvram, hpet irqs
[    0.879396] cpuidle: using governor ladder
[    0.879490] cpuidle: using governor menu
[    0.879589] No iBFT detected.
[    0.880694] TCP cubic registered
[    0.880872] NET: Registered protocol family 10
[    0.882240] lo: Disabled Privacy Extensions
[    0.883269] Mobile IPv6
[    0.883360] NET: Registered protocol family 17
[    0.883500] Using IPI No-Shortcut mode
[    0.898223] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input0
[    0.917824] registered taskstats version 1
[    0.918510] rtc_cmos 00:03: setting system clock to 2010-02-16 14:51:28 UTC (1266331888)
[    0.918806] Freeing unused kernel memory: 356k freed
[    0.919389] Write protecting the kernel text: 2392k
[    0.919536] Write protecting the kernel read-only data: 928k
[    1.003758] ata_piix 0000:00:1f.2: version 2.13
[    1.003815] ata_piix 0000:00:1f.2: PCI INT B -> GSI 19 (level, low) -> IRQ 19
[    1.003986] ata_piix 0000:00:1f.2: MAP [ P0 P2 IDE IDE ]
[    1.004358] ata_piix 0000:00:1f.2: setting latency timer to 64
[    1.004540] scsi0 : ata_piix
[    1.004886] scsi1 : ata_piix
[    1.009412] ata1: SATA max UDMA/133 cmd 0x1f0 ctl 0x3f6 bmdma 0xffa0 irq 14
[    1.009523] ata2: PATA max UDMA/100 cmd 0x170 ctl 0x376 bmdma 0xffa8 irq 15
[    1.103840] Switched to high resolution mode on CPU 0
[    1.180377] ata2.00: CFA: SILICONMOTION SM223AC, , max UDMA/66
[    1.180483] ata2.00: 7815024 sectors, multi 0: LBA 
[    1.196318] ata2.00: configured for UDMA/66
[    1.196698] scsi 1:0:0:0: Direct-Access     ATA      SILICONMOTION SM n/a  PQ: 0 ANSI: 5
[    1.249334] ACPI: EC: non-query interrupt received, switching to interrupt mode
[    1.269516] thermal LNXTHERM:01: registered as thermal_zone0
[    1.269638] ACPI: Thermal Zone [TZ00] (52 C)
[    1.624225] sd 1:0:0:0: [sda] 7815024 512-byte logical blocks: (4.00 GB/3.72 GiB)
[    1.624505] sd 1:0:0:0: [sda] Write Protect is off
[    1.624606] sd 1:0:0:0: [sda] Mode Sense: 00 3a 00 00
[    1.624682] sd 1:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[    1.625201]  sda: sda1 sda2
[    1.627406] sd 1:0:0:0: [sda] Attached SCSI disk
[    1.726773] PM: Starting manual resume from disk
[    1.830772] EXT4-fs (sda2): delayed allocation enabled
[    1.830974] EXT4-fs: file extents enabled
[    1.831247] EXT4-fs: mballoc enabled
[    1.831377] EXT4-fs (sda2): mounted filesystem without journal
[   33.244766] EXT4-fs (sda2): warning: mounting unchecked fs, running e2fsck is recommended
[   33.246093] EXT4-fs (sda2): no journal
[   66.496623] Adding 358392k swap on /swapfile.  Priority:-1 extents:48 across:1567744k 
[   68.432097] Syncing filesystems ... done.
[   68.436096] Freezing user space processes ... (elapsed 0.00 seconds) done.
[   68.436299] Freezing remaining freezable tasks ... (elapsed 0.00 seconds) done.
[   68.436696] PM: Preallocating image memory... done (allocated 122032 pages)
[   68.693244] PM: Allocated 488128 kbytes in 0.25 seconds (1952.51 MB/s)
[   68.693835] ata_piix 0000:00:1f.2: PCI INT B disabled
[   68.695106] Disabling non-boot CPUs ...
[   68.695379] PM: Creating hibernation image: 
[   68.696008] PM: Need to copy 5137 pages
[   68.696008] PM: Hibernation image created (5137 pages copied)
[   68.696008] CPU0: Thermal LVT vector (0xfa) already installed
[   68.696008] Force enabled HPET at resume
[   68.703403] pci 0000:00:1e.0: setting latency timer to 64
[   68.703526] ata_piix 0000:00:1f.2: restoring config space at offset 0x1 (was 0x2b00001, writing 0x2b00005)
[   68.703638] ata_piix 0000:00:1f.2: PCI INT B -> GSI 19 (level, low) -> IRQ 19
[   68.703721] ata_piix 0000:00:1f.2: setting latency timer to 64
[   68.710309] sd 1:0:0:0: [sda] Starting disk
[   68.876379] ata2.00: ACPI cmd ef/03:44:00:00:00:a0 (SET FEATURES) filtered out
[   68.876465] ata2.00: ACPI cmd ef/03:0c:00:00:00:a0 (SET FEATURES) filtered out
[   68.892319] ata2.00: configured for UDMA/66
[   68.978249] Restarting tasks ... done.
[   70.404093] Syncing filesystems ... done.
[   70.408090] Freezing user space processes ... (elapsed 0.00 seconds) done.
[   70.408300] Freezing remaining freezable tasks ... (elapsed 0.00 seconds) done.
[   70.408689] PM: Preallocating image memory... done (allocated 123273 pages)
[   71.325465] PM: Allocated 493092 kbytes in 0.91 seconds (541.85 MB/s)
[   71.326053] ata_piix 0000:00:1f.2: PCI INT B disabled
[   71.327436] kthreadd: page allocation failure. order:1, mode:0xd0
[   71.327519] Pid: 2, comm: kthreadd Not tainted 2.6.31eeepc #48
[   71.327592] Call Trace:
[   71.327671]  [<c10848f4>] ? __alloc_pages_nodemask+0x423/0x490
[   71.327755]  [<c103fb65>] ? kthread+0x0/0x64
[   71.327826]  [<c108496d>] ? __get_free_pages+0xc/0x17
[   71.327904]  [<c102d74f>] ? copy_process+0x99/0xf35
[   71.327978]  [<c103fb65>] ? kthread+0x0/0x64
[   71.328084]  [<c102e71f>] ? do_fork+0x134/0x297
[   71.328158]  [<c1001e00>] ? __switch_to+0x6f/0xe2
[   71.328231]  [<c103fb65>] ? kthread+0x0/0x64
[   71.328301]  [<c1001d89>] ? kernel_thread+0x7a/0x82
[   71.328374]  [<c103fb65>] ? kthread+0x0/0x64
[   71.328447]  [<c1003be0>] ? kernel_thread_helper+0x0/0x10
[   71.328523]  [<c103fb36>] ? kthreadd+0x8a/0xb9
[   71.328593]  [<c103faac>] ? kthreadd+0x0/0xb9
[   71.328665]  [<c1003be7>] ? kernel_thread_helper+0x7/0x10
[   71.328765] Mem-Info:
[   71.328851] DMA per-cpu:
[   71.328939] CPU    0: hi:    0, btch:   1 usd:   0
[   71.329036] Normal per-cpu:
[   71.329127] CPU    0: hi:  186, btch:  31 usd:   0
[   71.329236] active_anon:0 inactive_anon:0 isolated_anon:0
[   71.329240]  active_file:0 inactive_file:10 isolated_file:0
[   71.329244]  unevictable:1058 dirty:0 writeback:0 unstable:0 buffer:10
[   71.329249]  free:1267 slab_reclaimable:189 slab_unreclaimable:430
[   71.329253]  mapped:931 shmem:0 pagetables:9 bounce:0
[   71.329745] DMA free:2012kB min:88kB low:108kB high:132kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15804kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
[   71.330118] lowmem_reserve[]: 0 483 483 483
[   71.330454] Normal free:3056kB min:2764kB low:3452kB high:4144kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:40kB unevictable:4232kB isolated(anon):0kB isolated(file):0kB present:495300kB mlocked:4232kB dirty:0kB writeback:0kB mapped:3724kB shmem:0kB slab_reclaimable:756kB slab_unreclaimable:1720kB kernel_stack:232kB pagetables:36kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
[   71.330835] lowmem_reserve[]: 0 0 0 0
[   71.331154] DMA: 1*4kB 1*8kB 1*16kB 0*32kB 1*64kB 1*128kB 1*256kB 1*512kB 1*1024kB 0*2048kB 0*4096kB = 2012kB
[   71.331854] Normal: 26*4kB 9*8kB 4*16kB 0*32kB 0*64kB 0*128kB 1*256kB 1*512kB 0*1024kB 1*2048kB 0*4096kB = 3056kB
[   71.332569] 940 total pagecache pages
[   71.332661] 0 pages in swap cache
[   71.332752] Swap cache stats: add 91, delete 91, find 0/0
[   71.332851] Free swap  = 358028kB
[   71.332941] Total swap = 358392kB
[   71.338499] 128880 pages RAM
[   71.338591] 0 pages HighMem
[   71.338679] 2332 pages reserved
[   71.338767] 1079 pages shared
[   71.338855] 124261 pages non-shared
[   71.433571] pci 0000:00:1e.0: setting latency timer to 64
[   71.433731] ata_piix 0000:00:1f.2: restoring config space at offset 0x1 (was 0x2b00001, writing 0x2b00005)
[   71.433903] ata_piix 0000:00:1f.2: PCI INT B -> GSI 19 (level, low) -> IRQ 19
[   71.434013] ata_piix 0000:00:1f.2: setting latency timer to 64
[   71.440327] sd 1:0:0:0: [sda] Starting disk
[   71.612382] ata2.00: ACPI cmd ef/03:44:00:00:00:a0 (SET FEATURES) filtered out
[   71.612526] ata2.00: ACPI cmd ef/03:0c:00:00:00:a0 (SET FEATURES) filtered out
[   71.628319] ata2.00: configured for UDMA/66
[   71.629042] Restarting tasks ... done.

Re: s2disk hang update

[Alan Jenkins]

[-- Attachment #1: Type: text/plain, Size: 1460 bytes --]

On 2/16/10, Alan Jenkins <sourcejedi.lkml-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org> wrote:
> On 2/15/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
>> On Tuesday 09 February 2010, Alan Jenkins wrote:
>>> Perhaps I spoke too soon.  I see the same hang if I run too many
>>> applications.  The first hibernation fails with "not enough swap" as
>>> expected, but the second or third attempt hangs (with the same backtrace
>>> as before).
>>>
>>> The patch definitely helps though.  Without the patch, I see a hang the
>>> first time I try to hibernate with too many applications running.
>>
>> Well, I have an idea.
>>
>> Can you try to apply the appended patch in addition and see if that
>> helps?
>>
>> Rafael
>
> It doesn't seem to help.

To be clear: It doesn't stop the hang when I hibernate with too many
applications.

It does stop the same hang in a different case though.

1. boot with init=/bin/bash
2. run s2disk
3. cancel the s2disk
4. repeat steps 2&3

With the patch, I can run 10s of iterations, with no hang.
Without the patch, it soon hangs, (in disable_nonboot_cpus(), as always).

That's what happens on 2.6.33-rc7.  On 2.6.30, there is no problem.
On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an allocation
failure after a couple of iterations ("kthreadd: page allocation
failure. order:1, mode:0xd0").  It looks like it might be the same
stop_machine thread allocation failure that causes the hang.

Regards
Alan

[-- Attachment #2: graceful-allocation-failure.txt --]
[-- Type: text/plain, Size: 30282 bytes --]

[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Linux version 2.6.31eeepc (alan@alan-desktop-karmic) (gcc version 4.4.1 (Ubuntu 4.4.1-4ubuntu8) ) #48 SMP Tue Dec 1 14:37:15 GMT 2009
[    0.000000] KERNEL supported cpus:
[    0.000000]   Intel GenuineIntel
[    0.000000]   AMD AuthenticAMD
[    0.000000]   NSC Geode by NSC
[    0.000000]   Cyrix CyrixInstead
[    0.000000]   Centaur CentaurHauls
[    0.000000]   Transmeta GenuineTMx86
[    0.000000]   Transmeta TransmetaCPU
[    0.000000]   UMC UMC UMC UMC
[    0.000000] BIOS-provided physical RAM map:
[    0.000000]  BIOS-e820: 0000000000000000 - 000000000009fc00 (usable)
[    0.000000]  BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved)
[    0.000000]  BIOS-e820: 00000000000e4000 - 0000000000100000 (reserved)
[    0.000000]  BIOS-e820: 0000000000100000 - 000000001f780000 (usable)
[    0.000000]  BIOS-e820: 000000001f780000 - 000000001f790000 (ACPI data)
[    0.000000]  BIOS-e820: 000000001f790000 - 000000001f7d0000 (ACPI NVS)
[    0.000000]  BIOS-e820: 000000001f7d0000 - 000000001f7de000 (reserved)
[    0.000000]  BIOS-e820: 000000001f7e0000 - 000000001f800000 (reserved)
[    0.000000]  BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
[    0.000000]  BIOS-e820: 00000000fff80000 - 0000000100000000 (reserved)
[    0.000000] DMI present.
[    0.000000] AMI BIOS detected: BIOS may corrupt low RAM, working around it.
[    0.000000] e820 update range: 0000000000000000 - 0000000000010000 (usable) ==> (reserved)
[    0.000000] last_pfn = 0x1f780 max_arch_pfn = 0x100000
[    0.000000] MTRR default type: uncachable
[    0.000000] MTRR fixed ranges enabled:
[    0.000000]   00000-9FFFF write-back
[    0.000000]   A0000-DFFFF uncachable
[    0.000000]   E0000-EFFFF write-through
[    0.000000]   F0000-FFFFF write-protect
[    0.000000] MTRR variable ranges enabled:
[    0.000000]   0 base 000000000 mask FE0000000 write-back
[    0.000000]   1 base 01F800000 mask FFF800000 uncachable
[    0.000000]   2 disabled
[    0.000000]   3 disabled
[    0.000000]   4 disabled
[    0.000000]   5 disabled
[    0.000000]   6 disabled
[    0.000000]   7 disabled
[    0.000000] PAT not supported by CPU.
[    0.000000] initial memory mapped : 0 - 01800000
[    0.000000] init_memory_mapping: 0000000000000000-000000001f780000
[    0.000000]  0000000000 - 0000400000 page 4k
[    0.000000]  0000400000 - 001f400000 page 2M
[    0.000000]  001f400000 - 001f780000 page 4k
[    0.000000] kernel direct mapping tables up to 1f780000 @ 10000-16000
[    0.000000] RAMDISK: 176f6000 - 179df1f6
[    0.000000] ACPI: RSDP 000fbe50 00014 (v00 ACPIAM)
[    0.000000] ACPI: RSDT 1f780000 00034 (v01 A M I  OEMRSDT  03000911 MSFT 00000097)
[    0.000000] ACPI: FACP 1f780200 00081 (v01 A M I  OEMFACP  03000911 MSFT 00000097)
[    0.000000] ACPI: DSDT 1f780400 06069 (v01  A0797 A0797000 00000000 INTL 20060113)
[    0.000000] ACPI: FACS 1f790000 00040
[    0.000000] ACPI: APIC 1f780390 00068 (v01 A M I  OEMAPIC  03000911 MSFT 00000097)
[    0.000000] ACPI: OEMB 1f790040 00046 (v01 A M I  AMI_OEM  03000911 MSFT 00000097)
[    0.000000] ACPI: MCFG 1f786470 0003C (v01 A M I  OEMMCFG  03000911 MSFT 00000097)
[    0.000000] ACPI: Local APIC address 0xfee00000
[    0.000000] 0MB HIGHMEM available.
[    0.000000] 503MB LOWMEM available.
[    0.000000]   mapped low ram: 0 - 1f780000
[    0.000000]   low ram: 0 - 1f780000
[    0.000000]   node 0 low ram: 00000000 - 1f780000
[    0.000000]   node 0 bootmap 00012000 - 00015ef0
[    0.000000] (9 early reservations) ==> bootmem [0000000000 - 001f780000]
[    0.000000]   #0 [0000000000 - 0000001000]   BIOS data page ==> [0000000000 - 0000001000]
[    0.000000]   #1 [0000001000 - 0000002000]    EX TRAMPOLINE ==> [0000001000 - 0000002000]
[    0.000000]   #2 [0000006000 - 0000007000]       TRAMPOLINE ==> [0000006000 - 0000007000]
[    0.000000]   #3 [0001000000 - 00014a5f90]    TEXT DATA BSS ==> [0001000000 - 00014a5f90]
[    0.000000]   #4 [00176f6000 - 00179df1f6]          RAMDISK ==> [00176f6000 - 00179df1f6]
[    0.000000]   #5 [000009fc00 - 0000100000]    BIOS reserved ==> [000009fc00 - 0000100000]
[    0.000000]   #6 [00014a6000 - 00014ac1f4]              BRK ==> [00014a6000 - 00014ac1f4]
[    0.000000]   #7 [0000010000 - 0000012000]          PGTABLE ==> [0000010000 - 0000012000]
[    0.000000]   #8 [0000012000 - 0000016000]          BOOTMAP ==> [0000012000 - 0000016000]
[    0.000000] found SMP MP-table at [c00ff780] ff780
[    0.000000] Zone PFN ranges:
[    0.000000]   DMA      0x00000010 -> 0x00001000
[    0.000000]   Normal   0x00001000 -> 0x0001f780
[    0.000000]   HighMem  0x0001f780 -> 0x0001f780
[    0.000000] Movable zone start PFN for each node
[    0.000000] early_node_map[2] active PFN ranges
[    0.000000]     0: 0x00000010 -> 0x0000009f
[    0.000000]     0: 0x00000100 -> 0x0001f780
[    0.000000] On node 0 totalpages: 128783
[    0.000000] free_area_init_node: node 0, pgdat c1396960, node_mem_map c14ae200
[    0.000000]   DMA zone: 32 pages used for memmap
[    0.000000]   DMA zone: 0 pages reserved
[    0.000000]   DMA zone: 3951 pages, LIFO batch:0
[    0.000000]   Normal zone: 975 pages used for memmap
[    0.000000]   Normal zone: 123825 pages, LIFO batch:31
[    0.000000] Using APIC driver default
[    0.000000] ACPI: PM-Timer IO Port: 0x808
[    0.000000] ACPI: Local APIC address 0xfee00000
[    0.000000] ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled)
[    0.000000] ACPI: IOAPIC (id[0x01] address[0xfec00000] gsi_base[0])
[    0.000000] IOAPIC[0]: apic_id 1, version 32, address 0xfec00000, GSI 0-23
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[    0.000000] ACPI: IRQ0 used by override.
[    0.000000] ACPI: IRQ2 used by override.
[    0.000000] ACPI: IRQ9 used by override.
[    0.000000] Enabling APIC mode:  Flat.  Using 1 I/O APICs
[    0.000000] Using ACPI (MADT) for SMP configuration information
[    0.000000] SMP: Allowing 1 CPUs, 0 hotplug CPUs
[    0.000000] nr_irqs_gsi: 24
[    0.000000] PM: Registered nosave memory: 000000000009f000 - 00000000000a0000
[    0.000000] PM: Registered nosave memory: 00000000000a0000 - 00000000000e4000
[    0.000000] PM: Registered nosave memory: 00000000000e4000 - 0000000000100000
[    0.000000] Allocating PCI resources starting at 1f800000 (gap: 1f800000:df600000)
[    0.000000] Booting paravirtualized kernel on bare hardware
[    0.000000] NR_CPUS:32 nr_cpumask_bits:32 nr_cpu_ids:1 nr_node_ids:1
[    0.000000] PERCPU: Embedded 13 pages/cpu @c1c00000 s32088 r0 d21160 u4194304
[    0.000000] pcpu-alloc: s32088 r0 d21160 u4194304 alloc=1*4194304
[    0.000000] pcpu-alloc: [0] 0 
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 127776
[    0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-2.6.31eeepc root=/dev/sda2 ro rootfstype=ext4 no_console_suspend i915.modeset=1 resume=/dev/sda2 resume_offset=188416 init=/bin/bash
[    0.000000] Unknown boot option `i915.modeset=1': ignoring
[    0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes)
[    0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
[    0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
[    0.000000] Enabling fast FPU save and restore... done.
[    0.000000] Enabling unmasked SIMD FPU exception support... done.
[    0.000000] Initializing CPU#0
[    0.000000] Initializing HighMem for node 0 (00000000:00000000)
[    0.000000] Memory: 502436k/515584k available (2390k kernel code, 12296k reserved, 1319k data, 356k init, 0k highmem)
[    0.000000] virtual kernel memory layout:
[    0.000000]     fixmap  : 0xffd56000 - 0xfffff000   (2724 kB)
[    0.000000]     pkmap   : 0xff400000 - 0xff800000   (4096 kB)
[    0.000000]     vmalloc : 0xdff80000 - 0xff3fe000   ( 500 MB)
[    0.000000]     lowmem  : 0xc0000000 - 0xdf780000   ( 503 MB)
[    0.000000]       .init : 0xc13a0000 - 0xc13f9000   ( 356 kB)
[    0.000000]       .data : 0xc1255afe - 0xc139fa68   (1319 kB)
[    0.000000]       .text : 0xc1000000 - 0xc1255afe   (2390 kB)
[    0.000000] Checking if this processor honours the WP bit even in supervisor mode...Ok.
[    0.000000] Hierarchical RCU implementation.
[    0.000000] NR_IRQS:1280
[    0.000000] Console: colour VGA+ 80x25
[    0.000000] console [tty0] enabled
[    0.000000] Fast TSC calibration using PIT
[    0.000000] Detected 630.015 MHz processor.
[    0.004010] Calibrating delay loop (skipped), value calculated using timer frequency.. 1260.03 BogoMIPS (lpj=2520060)
[    0.008114] Security Framework initialized
[    0.008220] SELinux:  Disabled at boot.
[    0.008348] Mount-cache hash table entries: 512
[    0.008760] Initializing cgroup subsys ns
[    0.008860] Initializing cgroup subsys cpuacct
[    0.008961] Initializing cgroup subsys devices
[    0.009058] Initializing cgroup subsys freezer
[    0.009153] Initializing cgroup subsys net_cls
[    0.009303] CPU: L1 I cache: 32K, L1 D cache: 32K
[    0.009446] CPU: L2 cache: 512K
[    0.009542] mce: CPU supports 5 MCE banks
[    0.009651] CPU0: Thermal monitoring enabled (TM1)
[    0.009764] Performance Events: p6 PMU driver.
[    0.009931] ... version:                0
[    0.010024] ... bit width:              32
[    0.010118] ... generic registers:      2
[    0.010211] ... value mask:             00000000ffffffff
[    0.010310] ... max period:             000000007fffffff
[    0.010408] ... fixed-purpose events:   0
[    0.010502] ... event mask:             0000000000000003
[    0.010608] Checking 'hlt' instruction... OK.
[    0.024948] SMP alternatives: switching to UP code
[    0.035538] Freeing SMP alternatives: 12k freed
[    0.035655] ACPI: Core revision 20090521
[    0.060707] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1
[    0.102319] CPU0: Intel(R) Celeron(R) M processor          900MHz stepping 08
[    0.104001] APIC calibration not consistent with PM-Timer: 136ms instead of 100ms
[    0.104001] APIC delta adjusted to PM-Timer: 437545 (595095)
[    0.104001] Brought up 1 CPUs
[    0.104001] Total of 1 processors activated (1260.03 BogoMIPS).
[    0.104001] CPU0 attaching NULL sched-domain.
[    0.104001] regulator: core version 0.5
[    0.104001] NET: Registered protocol family 16
[    0.104001] ACPI: bus type pci registered
[    0.104001] PCI: MCFG configuration 0: base e0000000 segment 0 buses 0 - 255
[    0.104001] PCI: Not using MMCONFIG.
[    0.104001] PCI: PCI BIOS revision 3.00 entry at 0xf0031, last bus=5
[    0.104001] PCI: Using configuration type 1 for base access
[    0.105290] bio: create slab <bio-0> at 0
[    0.107289] ACPI: EC: Look up EC in DSDT
[    0.128761] ACPI: Interpreter enabled
[    0.128881] ACPI: (supports S0 S1 S3 S4 S5)
[    0.129262] ACPI: Using IOAPIC for interrupt routing
[    0.129500] PCI: MCFG configuration 0: base e0000000 segment 0 buses 0 - 255
[    0.135742] PCI: MCFG area at e0000000 reserved in ACPI motherboard resources
[    0.135852] PCI: Using MMCONFIG for extended config space
[    0.149580] ACPI: EC: GPE = 0x18, I/O: command/status = 0x66, data = 0x62
[    0.149689] ACPI: EC: driver started in poll mode
[    0.150277] ACPI: No dock devices found.
[    0.150782] ACPI: PCI Root Bridge [PCI0] (0000:00)
[    0.151088] pci 0000:00:02.0: reg 10 32bit mmio: [0xf7f00000-0xf7f7ffff]
[    0.151103] pci 0000:00:02.0: reg 14 io port: [0xec00-0xec07]
[    0.151117] pci 0000:00:02.0: reg 18 32bit mmio pref: [0xd0000000-0xdfffffff]
[    0.151131] pci 0000:00:02.0: reg 1c 32bit mmio: [0xf7ec0000-0xf7efffff]
[    0.151206] pci 0000:00:02.1: reg 10 32bit mmio: [0xf7f80000-0xf7ffffff]
[    0.151357] pci 0000:00:1b.0: reg 10 64bit mmio: [0xf7eb8000-0xf7ebbfff]
[    0.151428] pci 0000:00:1b.0: PME# supported from D0 D3hot D3cold
[    0.151536] pci 0000:00:1b.0: PME# disabled
[    0.151732] pci 0000:00:1c.0: PME# supported from D0 D3hot D3cold
[    0.151837] pci 0000:00:1c.0: PME# disabled
[    0.152049] pci 0000:00:1c.1: PME# supported from D0 D3hot D3cold
[    0.152156] pci 0000:00:1c.1: PME# disabled
[    0.152355] pci 0000:00:1c.2: PME# supported from D0 D3hot D3cold
[    0.152460] pci 0000:00:1c.2: PME# disabled
[    0.152630] pci 0000:00:1d.0: reg 20 io port: [0xe400-0xe41f]
[    0.152714] pci 0000:00:1d.1: reg 20 io port: [0xe480-0xe49f]
[    0.152797] pci 0000:00:1d.2: reg 20 io port: [0xe800-0xe81f]
[    0.152880] pci 0000:00:1d.3: reg 20 io port: [0xe880-0xe89f]
[    0.152968] pci 0000:00:1d.7: reg 10 32bit mmio: [0xf7eb7c00-0xf7eb7fff]
[    0.153048] pci 0000:00:1d.7: PME# supported from D0 D3hot D3cold
[    0.153154] pci 0000:00:1d.7: PME# disabled
[    0.153427] pci 0000:00:1f.0: Force enabled HPET at 0xfed00000
[    0.153448] pci 0000:00:1f.0: quirk: region 0800-087f claimed by ICH6 ACPI/GPIO/TCO
[    0.153589] pci 0000:00:1f.0: quirk: region 0480-04bf claimed by ICH6 GPIO
[    0.153698] pci 0000:00:1f.0: LPC Generic IO decode 1 PIO at 0380-03ff
[    0.153856] pci 0000:00:1f.2: reg 10 io port: [0x00-0x07]
[    0.153870] pci 0000:00:1f.2: reg 14 io port: [0x00-0x03]
[    0.153884] pci 0000:00:1f.2: reg 18 io port: [0x00-0x07]
[    0.153898] pci 0000:00:1f.2: reg 1c io port: [0x00-0x03]
[    0.153913] pci 0000:00:1f.2: reg 20 io port: [0xffa0-0xffaf]
[    0.153955] pci 0000:00:1f.2: PME# supported from D3hot
[    0.154057] pci 0000:00:1f.2: PME# disabled
[    0.154217] pci 0000:00:1f.3: reg 20 io port: [0x400-0x41f]
[    0.154409] pci 0000:03:00.0: reg 10 64bit mmio: [0xfbfc0000-0xfbffffff]
[    0.154459] pci 0000:03:00.0: reg 30 32bit mmio pref: [0xfbfa0000-0xfbfbffff]
[    0.154516] pci 0000:03:00.0: PME# supported from D3hot D3cold
[    0.156011] pci 0000:03:00.0: PME# disabled
[    0.156180] pci 0000:00:1c.1: bridge 32bit mmio: [0xfbf00000-0xfbffffff]
[    0.156271] pci 0000:01:00.0: reg 10 64bit mmio: [0xfbef0000-0xfbefffff]
[    0.156446] pci 0000:00:1c.2: bridge 32bit mmio: [0xf8000000-0xfbefffff]
[    0.156461] pci 0000:00:1c.2: bridge 64bit mmio pref: [0xf0000000-0xf6ffffff]
[    0.156536] pci 0000:00:1e.0: transparent bridge
[    0.156670] pci_bus 0000:00: on NUMA node 0
[    0.156692] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
[    0.157130] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P3._PRT]
[    0.157287] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P5._PRT]
[    0.157427] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P6._PRT]
[    0.169807] ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 *5 6 7 10 11 12 14 15)
[    0.170792] ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 7 10 *11 12 14 15)
[    0.171762] ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 6 7 *10 11 12 14 15)
[    0.172727] ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 *7 10 11 12 14 15)
[    0.173695] ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 7 10 11 12 14 15) *0, disabled.
[    0.174791] ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 7 10 11 12 14 15) *0, disabled.
[    0.175889] ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 6 7 10 11 12 14 15) *0, disabled.
[    0.176994] ACPI: PCI Interrupt Link [LNKH] (IRQs *3 4 5 6 7 10 11 12 14 15)
[    0.177907] vgaarb: device added: PCI:0000:00:02.0,decodes=io+mem,owns=io+mem,locks=none
[    0.178069] vgaarb: loaded
[    0.178497] SCSI subsystem initialized
[    0.178735] libata version 3.00 loaded.
[    0.178908] PCI: Using ACPI for IRQ routing
[    0.179757] hpet clockevent registered
[    0.179767] HPET: 3 timers in total, 0 timers will be used for per-cpu timer
[    0.179882] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0
[    0.180181] hpet0: 3 comparators, 64-bit 14.318180 MHz counter
[    0.184027] Switching to clocksource tsc
[    0.187552] pnp: PnP ACPI init
[    0.187701] ACPI: bus type pnp registered
[    0.192924] pnp: PnP ACPI: found 13 devices
[    0.193021] ACPI: ACPI bus type pnp unregistered
[    0.193123] PnPBIOS: Disabled by ACPI PNP
[    0.193278] system 00:01: iomem range 0xfed13000-0xfed19fff has been reserved
[    0.193407] system 00:08: ioport range 0x380-0x383 has been reserved
[    0.193514] system 00:08: ioport range 0x4d0-0x4d1 has been reserved
[    0.193620] system 00:08: ioport range 0x800-0x87f has been reserved
[    0.193727] system 00:08: ioport range 0x480-0x4bf has been reserved
[    0.193835] system 00:08: iomem range 0xfed1c000-0xfed1ffff has been reserved
[    0.193945] system 00:08: iomem range 0xfed20000-0xfed8ffff has been reserved
[    0.194056] system 00:08: iomem range 0xfff00000-0xffffffff could not be reserved
[    0.194203] system 00:09: iomem range 0xfec00000-0xfec00fff could not be reserved
[    0.194343] system 00:09: iomem range 0xfee00000-0xfee00fff has been reserved
[    0.194462] system 00:0a: iomem range 0xe0000000-0xefffffff has been reserved
[    0.194579] system 00:0b: iomem range 0xe0000000-0xefffffff has been reserved
[    0.194695] system 00:0c: iomem range 0x0-0x9ffff could not be reserved
[    0.194803] system 00:0c: iomem range 0xc0000-0xcffff could not be reserved
[    0.194914] system 00:0c: iomem range 0xe0000-0xfffff could not be reserved
[    0.195024] system 00:0c: iomem range 0x100000-0x1f7fffff could not be reserved
[    0.231261] pci 0000:00:1c.0: PCI bridge, secondary bus 0000:04
[    0.231369] pci 0000:00:1c.0:   IO window: 0x1000-0x1fff
[    0.231474] pci 0000:00:1c.0:   MEM window: 0x20000000-0x201fffff
[    0.231581] pci 0000:00:1c.0:   PREFETCH window: 0x00000020200000-0x000000203fffff
[    0.231726] pci 0000:00:1c.1: PCI bridge, secondary bus 0000:03
[    0.231842] pci 0000:00:1c.1:   IO window: 0x2000-0x2fff
[    0.231947] pci 0000:00:1c.1:   MEM window: 0xfbf00000-0xfbffffff
[    0.232054] pci 0000:00:1c.1:   PREFETCH window: 0x00000020400000-0x000000205fffff
[    0.232198] pci 0000:00:1c.2: PCI bridge, secondary bus 0000:01
[    0.232303] pci 0000:00:1c.2:   IO window: 0x3000-0x3fff
[    0.232408] pci 0000:00:1c.2:   MEM window: 0xf8000000-0xfbefffff
[    0.232515] pci 0000:00:1c.2:   PREFETCH window: 0x000000f0000000-0x000000f6ffffff
[    0.232659] pci 0000:00:1e.0: PCI bridge, secondary bus 0000:05
[    0.232761] pci 0000:00:1e.0:   IO window: disabled
[    0.232864] pci 0000:00:1e.0:   MEM window: disabled
[    0.232964] pci 0000:00:1e.0:   PREFETCH window: disabled
[    0.233082] pci 0000:00:1c.0: enabling device (0104 -> 0107)
[    0.233201] pci 0000:00:1c.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[    0.233311] pci 0000:00:1c.0: setting latency timer to 64
[    0.233327] pci 0000:00:1c.1: enabling device (0106 -> 0107)
[    0.233434] pci 0000:00:1c.1: PCI INT B -> GSI 17 (level, low) -> IRQ 17
[    0.233542] pci 0000:00:1c.1: setting latency timer to 64
[    0.233557] pci 0000:00:1c.2: enabling device (0106 -> 0107)
[    0.233665] pci 0000:00:1c.2: PCI INT C -> GSI 18 (level, low) -> IRQ 18
[    0.233774] pci 0000:00:1c.2: setting latency timer to 64
[    0.233788] pci 0000:00:1e.0: setting latency timer to 64
[    0.233801] pci_bus 0000:00: resource 0 io:  [0x00-0xffff]
[    0.233810] pci_bus 0000:00: resource 1 mem: [0x000000-0xffffffff]
[    0.233820] pci_bus 0000:04: resource 0 io:  [0x1000-0x1fff]
[    0.233829] pci_bus 0000:04: resource 1 mem: [0x20000000-0x201fffff]
[    0.233838] pci_bus 0000:04: resource 2 pref mem [0x20200000-0x203fffff]
[    0.233848] pci_bus 0000:03: resource 0 io:  [0x2000-0x2fff]
[    0.233857] pci_bus 0000:03: resource 1 mem: [0xfbf00000-0xfbffffff]
[    0.233866] pci_bus 0000:03: resource 2 pref mem [0x20400000-0x205fffff]
[    0.233876] pci_bus 0000:01: resource 0 io:  [0x3000-0x3fff]
[    0.233885] pci_bus 0000:01: resource 1 mem: [0xf8000000-0xfbefffff]
[    0.233894] pci_bus 0000:01: resource 2 pref mem [0xf0000000-0xf6ffffff]
[    0.233904] pci_bus 0000:05: resource 3 io:  [0x00-0xffff]
[    0.233913] pci_bus 0000:05: resource 4 mem: [0x000000-0xffffffff]
[    0.234068] NET: Registered protocol family 2
[    0.234411] IP route cache hash table entries: 4096 (order: 2, 16384 bytes)
[    0.235326] TCP established hash table entries: 16384 (order: 5, 131072 bytes)
[    0.235726] TCP bind hash table entries: 16384 (order: 5, 131072 bytes)
[    0.236111] TCP: Hash tables configured (established 16384 bind 16384)
[    0.236217] TCP reno registered
[    0.236581] NET: Registered protocol family 1
[    0.236831] Unpacking initramfs...
[    0.487945] Freeing initrd memory: 2980k freed
[    0.493850] audit: initializing netlink socket (disabled)
[    0.494001] type=2000 audit(1266331887.491:1): initialized
[    0.494513] HugeTLB registered 4 MB page size, pre-allocated 0 pages
[    0.494853] VFS: Disk quotas dquot_6.5.2
[    0.495040] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[    0.495352] msgmni has been set to 987
[    0.495949] alg: No test for stdrng (krng)
[    0.496140] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 253)
[    0.496280] io scheduler noop registered
[    0.496374] io scheduler anticipatory registered
[    0.496470] io scheduler deadline registered
[    0.496601] io scheduler cfq registered (default)
[    0.496733] pci 0000:00:02.0: Boot video device
[    0.497135] pcieport-driver 0000:00:1c.0: irq 24 for MSI/MSI-X
[    0.497155] pcieport-driver 0000:00:1c.0: setting latency timer to 64
[    0.497400] pcieport-driver 0000:00:1c.1: irq 25 for MSI/MSI-X
[    0.497417] pcieport-driver 0000:00:1c.1: setting latency timer to 64
[    0.497651] pcieport-driver 0000:00:1c.2: irq 26 for MSI/MSI-X
[    0.497667] pcieport-driver 0000:00:1c.2: setting latency timer to 64
[    0.498101] isapnp: Scanning for PnP cards...
[    0.851963] isapnp: No Plug & Play device found
[    0.855293] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[    0.856555] PNP: PS/2 Controller [PNP0303:PS2K,PNP0f13:PS2M] at 0x60,0x64 irq 1,12
[    0.877617] serio: i8042 KBD port at 0x60,0x64 irq 1
[    0.877727] serio: i8042 AUX port at 0x60,0x64 irq 12
[    0.878071] mice: PS/2 mouse device common for all mice
[    0.878930] rtc_cmos 00:03: RTC can wake from S4
[    0.879121] rtc_cmos 00:03: rtc core: registered rtc_cmos as rtc0
[    0.879260] rtc0: alarms up to one month, 114 bytes nvram, hpet irqs
[    0.879396] cpuidle: using governor ladder
[    0.879490] cpuidle: using governor menu
[    0.879589] No iBFT detected.
[    0.880694] TCP cubic registered
[    0.880872] NET: Registered protocol family 10
[    0.882240] lo: Disabled Privacy Extensions
[    0.883269] Mobile IPv6
[    0.883360] NET: Registered protocol family 17
[    0.883500] Using IPI No-Shortcut mode
[    0.898223] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input0
[    0.917824] registered taskstats version 1
[    0.918510] rtc_cmos 00:03: setting system clock to 2010-02-16 14:51:28 UTC (1266331888)
[    0.918806] Freeing unused kernel memory: 356k freed
[    0.919389] Write protecting the kernel text: 2392k
[    0.919536] Write protecting the kernel read-only data: 928k
[    1.003758] ata_piix 0000:00:1f.2: version 2.13
[    1.003815] ata_piix 0000:00:1f.2: PCI INT B -> GSI 19 (level, low) -> IRQ 19
[    1.003986] ata_piix 0000:00:1f.2: MAP [ P0 P2 IDE IDE ]
[    1.004358] ata_piix 0000:00:1f.2: setting latency timer to 64
[    1.004540] scsi0 : ata_piix
[    1.004886] scsi1 : ata_piix
[    1.009412] ata1: SATA max UDMA/133 cmd 0x1f0 ctl 0x3f6 bmdma 0xffa0 irq 14
[    1.009523] ata2: PATA max UDMA/100 cmd 0x170 ctl 0x376 bmdma 0xffa8 irq 15
[    1.103840] Switched to high resolution mode on CPU 0
[    1.180377] ata2.00: CFA: SILICONMOTION SM223AC, , max UDMA/66
[    1.180483] ata2.00: 7815024 sectors, multi 0: LBA 
[    1.196318] ata2.00: configured for UDMA/66
[    1.196698] scsi 1:0:0:0: Direct-Access     ATA      SILICONMOTION SM n/a  PQ: 0 ANSI: 5
[    1.249334] ACPI: EC: non-query interrupt received, switching to interrupt mode
[    1.269516] thermal LNXTHERM:01: registered as thermal_zone0
[    1.269638] ACPI: Thermal Zone [TZ00] (52 C)
[    1.624225] sd 1:0:0:0: [sda] 7815024 512-byte logical blocks: (4.00 GB/3.72 GiB)
[    1.624505] sd 1:0:0:0: [sda] Write Protect is off
[    1.624606] sd 1:0:0:0: [sda] Mode Sense: 00 3a 00 00
[    1.624682] sd 1:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[    1.625201]  sda: sda1 sda2
[    1.627406] sd 1:0:0:0: [sda] Attached SCSI disk
[    1.726773] PM: Starting manual resume from disk
[    1.830772] EXT4-fs (sda2): delayed allocation enabled
[    1.830974] EXT4-fs: file extents enabled
[    1.831247] EXT4-fs: mballoc enabled
[    1.831377] EXT4-fs (sda2): mounted filesystem without journal
[   33.244766] EXT4-fs (sda2): warning: mounting unchecked fs, running e2fsck is recommended
[   33.246093] EXT4-fs (sda2): no journal
[   66.496623] Adding 358392k swap on /swapfile.  Priority:-1 extents:48 across:1567744k 
[   68.432097] Syncing filesystems ... done.
[   68.436096] Freezing user space processes ... (elapsed 0.00 seconds) done.
[   68.436299] Freezing remaining freezable tasks ... (elapsed 0.00 seconds) done.
[   68.436696] PM: Preallocating image memory... done (allocated 122032 pages)
[   68.693244] PM: Allocated 488128 kbytes in 0.25 seconds (1952.51 MB/s)
[   68.693835] ata_piix 0000:00:1f.2: PCI INT B disabled
[   68.695106] Disabling non-boot CPUs ...
[   68.695379] PM: Creating hibernation image: 
[   68.696008] PM: Need to copy 5137 pages
[   68.696008] PM: Hibernation image created (5137 pages copied)
[   68.696008] CPU0: Thermal LVT vector (0xfa) already installed
[   68.696008] Force enabled HPET at resume
[   68.703403] pci 0000:00:1e.0: setting latency timer to 64
[   68.703526] ata_piix 0000:00:1f.2: restoring config space at offset 0x1 (was 0x2b00001, writing 0x2b00005)
[   68.703638] ata_piix 0000:00:1f.2: PCI INT B -> GSI 19 (level, low) -> IRQ 19
[   68.703721] ata_piix 0000:00:1f.2: setting latency timer to 64
[   68.710309] sd 1:0:0:0: [sda] Starting disk
[   68.876379] ata2.00: ACPI cmd ef/03:44:00:00:00:a0 (SET FEATURES) filtered out
[   68.876465] ata2.00: ACPI cmd ef/03:0c:00:00:00:a0 (SET FEATURES) filtered out
[   68.892319] ata2.00: configured for UDMA/66
[   68.978249] Restarting tasks ... done.
[   70.404093] Syncing filesystems ... done.
[   70.408090] Freezing user space processes ... (elapsed 0.00 seconds) done.
[   70.408300] Freezing remaining freezable tasks ... (elapsed 0.00 seconds) done.
[   70.408689] PM: Preallocating image memory... done (allocated 123273 pages)
[   71.325465] PM: Allocated 493092 kbytes in 0.91 seconds (541.85 MB/s)
[   71.326053] ata_piix 0000:00:1f.2: PCI INT B disabled
[   71.327436] kthreadd: page allocation failure. order:1, mode:0xd0
[   71.327519] Pid: 2, comm: kthreadd Not tainted 2.6.31eeepc #48
[   71.327592] Call Trace:
[   71.327671]  [<c10848f4>] ? __alloc_pages_nodemask+0x423/0x490
[   71.327755]  [<c103fb65>] ? kthread+0x0/0x64
[   71.327826]  [<c108496d>] ? __get_free_pages+0xc/0x17
[   71.327904]  [<c102d74f>] ? copy_process+0x99/0xf35
[   71.327978]  [<c103fb65>] ? kthread+0x0/0x64
[   71.328084]  [<c102e71f>] ? do_fork+0x134/0x297
[   71.328158]  [<c1001e00>] ? __switch_to+0x6f/0xe2
[   71.328231]  [<c103fb65>] ? kthread+0x0/0x64
[   71.328301]  [<c1001d89>] ? kernel_thread+0x7a/0x82
[   71.328374]  [<c103fb65>] ? kthread+0x0/0x64
[   71.328447]  [<c1003be0>] ? kernel_thread_helper+0x0/0x10
[   71.328523]  [<c103fb36>] ? kthreadd+0x8a/0xb9
[   71.328593]  [<c103faac>] ? kthreadd+0x0/0xb9
[   71.328665]  [<c1003be7>] ? kernel_thread_helper+0x7/0x10
[   71.328765] Mem-Info:
[   71.328851] DMA per-cpu:
[   71.328939] CPU    0: hi:    0, btch:   1 usd:   0
[   71.329036] Normal per-cpu:
[   71.329127] CPU    0: hi:  186, btch:  31 usd:   0
[   71.329236] active_anon:0 inactive_anon:0 isolated_anon:0
[   71.329240]  active_file:0 inactive_file:10 isolated_file:0
[   71.329244]  unevictable:1058 dirty:0 writeback:0 unstable:0 buffer:10
[   71.329249]  free:1267 slab_reclaimable:189 slab_unreclaimable:430
[   71.329253]  mapped:931 shmem:0 pagetables:9 bounce:0
[   71.329745] DMA free:2012kB min:88kB low:108kB high:132kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15804kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
[   71.330118] lowmem_reserve[]: 0 483 483 483
[   71.330454] Normal free:3056kB min:2764kB low:3452kB high:4144kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:40kB unevictable:4232kB isolated(anon):0kB isolated(file):0kB present:495300kB mlocked:4232kB dirty:0kB writeback:0kB mapped:3724kB shmem:0kB slab_reclaimable:756kB slab_unreclaimable:1720kB kernel_stack:232kB pagetables:36kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
[   71.330835] lowmem_reserve[]: 0 0 0 0
[   71.331154] DMA: 1*4kB 1*8kB 1*16kB 0*32kB 1*64kB 1*128kB 1*256kB 1*512kB 1*1024kB 0*2048kB 0*4096kB = 2012kB
[   71.331854] Normal: 26*4kB 9*8kB 4*16kB 0*32kB 0*64kB 0*128kB 1*256kB 1*512kB 0*1024kB 1*2048kB 0*4096kB = 3056kB
[   71.332569] 940 total pagecache pages
[   71.332661] 0 pages in swap cache
[   71.332752] Swap cache stats: add 91, delete 91, find 0/0
[   71.332851] Free swap  = 358028kB
[   71.332941] Total swap = 358392kB
[   71.338499] 128880 pages RAM
[   71.338591] 0 pages HighMem
[   71.338679] 2332 pages reserved
[   71.338767] 1079 pages shared
[   71.338855] 124261 pages non-shared
[   71.433571] pci 0000:00:1e.0: setting latency timer to 64
[   71.433731] ata_piix 0000:00:1f.2: restoring config space at offset 0x1 (was 0x2b00001, writing 0x2b00005)
[   71.433903] ata_piix 0000:00:1f.2: PCI INT B -> GSI 19 (level, low) -> IRQ 19
[   71.434013] ata_piix 0000:00:1f.2: setting latency timer to 64
[   71.440327] sd 1:0:0:0: [sda] Starting disk
[   71.612382] ata2.00: ACPI cmd ef/03:44:00:00:00:a0 (SET FEATURES) filtered out
[   71.612526] ata2.00: ACPI cmd ef/03:0c:00:00:00:a0 (SET FEATURES) filtered out
[   71.628319] ata2.00: configured for UDMA/66
[   71.629042] Restarting tasks ... done.

Re: s2disk hang update

[Rafael J. Wysocki]

On Tuesday 16 February 2010, Alan Jenkins wrote:
> On 2/16/10, Alan Jenkins <sourcejedi.lkml@googlemail.com> wrote:
> > On 2/15/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >> On Tuesday 09 February 2010, Alan Jenkins wrote:
> >>> Perhaps I spoke too soon.  I see the same hang if I run too many
> >>> applications.  The first hibernation fails with "not enough swap" as
> >>> expected, but the second or third attempt hangs (with the same backtrace
> >>> as before).
> >>>
> >>> The patch definitely helps though.  Without the patch, I see a hang the
> >>> first time I try to hibernate with too many applications running.
> >>
> >> Well, I have an idea.
> >>
> >> Can you try to apply the appended patch in addition and see if that
> >> helps?
> >>
> >> Rafael
> >
> > It doesn't seem to help.
> 
> To be clear: It doesn't stop the hang when I hibernate with too many
> applications.
> 
> It does stop the same hang in a different case though.
> 
> 1. boot with init=/bin/bash
> 2. run s2disk
> 3. cancel the s2disk
> 4. repeat steps 2&3
> 
> With the patch, I can run 10s of iterations, with no hang.
> Without the patch, it soon hangs, (in disable_nonboot_cpus(), as always).
> 
> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no problem.
> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an allocation
> failure after a couple of iterations ("kthreadd: page allocation
> failure. order:1, mode:0xd0").  It looks like it might be the same
> stop_machine thread allocation failure that causes the hang.

Have you tested it alone or on top of the previous one?  If you've tested it
alone, please apply the appended one in addition to it and retest.

Rafael

---
From: Rafael J. Wysocki <rjw@sisk.pl>
Subject: MM / PM: Force GFP_NOIO during suspend/hibernation and resume (rev. 3)

There are quite a few GFP_KERNEL memory allocations made during
suspend/hibernation and resume that may cause the system to hang,
because the I/O operations they depend on cannot be completed due to
the underlying devices being suspended.

Avoid this problem by clearing the __GFP_IO and __GFP_FS bits in
gfp_allowed_mask before suspend/hibernation and restoring the
original values of these bits in gfp_allowed_mask durig the
subsequent resume.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Reported-by: Maxim Levitsky <maximlevitsky@gmail.com>
---
 include/linux/gfp.h      |    7 +++----
 init/main.c              |    2 +-
 kernel/power/hibernate.c |    9 +++++++++
 kernel/power/suspend.c   |    3 +++
 mm/page_alloc.c          |   26 ++++++++++++++++++++++++++
 5 files changed, 42 insertions(+), 5 deletions(-)

Index: linux-2.6/include/linux/gfp.h
===================================================================
--- linux-2.6.orig/include/linux/gfp.h
+++ linux-2.6/include/linux/gfp.h
@@ -83,6 +83,7 @@ struct vm_area_struct;
 #define GFP_HIGHUSER_MOVABLE	(__GFP_WAIT | __GFP_IO | __GFP_FS | \
 				 __GFP_HARDWALL | __GFP_HIGHMEM | \
 				 __GFP_MOVABLE)
+#define GFP_IOFS	(__GFP_IO | __GFP_FS)
 
 #ifdef CONFIG_NUMA
 #define GFP_THISNODE	(__GFP_THISNODE | __GFP_NOWARN | __GFP_NORETRY)
@@ -337,9 +338,7 @@ void drain_local_pages(void *dummy);
 
 extern gfp_t gfp_allowed_mask;
 
-static inline void set_gfp_allowed_mask(gfp_t mask)
-{
-	gfp_allowed_mask = mask;
-}
+extern void set_gfp_allowed_mask(gfp_t mask);
+extern gfp_t clear_gfp_allowed_mask(gfp_t mask);
 
 #endif /* __LINUX_GFP_H */
Index: linux-2.6/init/main.c
===================================================================
--- linux-2.6.orig/init/main.c
+++ linux-2.6/init/main.c
@@ -601,7 +601,7 @@ asmlinkage void __init start_kernel(void
 	local_irq_enable();
 
 	/* Interrupts are enabled now so all GFP allocations are safe. */
-	set_gfp_allowed_mask(__GFP_BITS_MASK);
+	gfp_allowed_mask = __GFP_BITS_MASK;
 
 	kmem_cache_init_late();
 
Index: linux-2.6/mm/page_alloc.c
===================================================================
--- linux-2.6.orig/mm/page_alloc.c
+++ linux-2.6/mm/page_alloc.c
@@ -76,6 +76,32 @@ unsigned long totalreserve_pages __read_
 int percpu_pagelist_fraction;
 gfp_t gfp_allowed_mask __read_mostly = GFP_BOOT_MASK;
 
+#ifdef CONFIG_PM_SLEEP
+/*
+ * The following functions are used by the suspend/hibernate code to temporarily
+ * change gfp_allowed_mask in order to avoid using I/O during memory allocations
+ * while devices are suspended.  To avoid races with the suspend/hibernate code,
+ * they should always be called with pm_mutex held (gfp_allowed_mask also should
+ * only be modified with pm_mutex held, unless the suspend/hibernate code is
+ * guaranteed not to run in parallel with that modification).
+ */
+
+void set_gfp_allowed_mask(gfp_t mask)
+{
+	WARN_ON(!mutex_is_locked(&pm_mutex));
+	gfp_allowed_mask = mask;
+}
+
+gfp_t clear_gfp_allowed_mask(gfp_t mask)
+{
+	gfp_t ret = gfp_allowed_mask;
+
+	WARN_ON(!mutex_is_locked(&pm_mutex));
+	gfp_allowed_mask &= ~mask;
+	return ret;
+}
+#endif /* CONFIG_PM_SLEEP */
+
 #ifdef CONFIG_HUGETLB_PAGE_SIZE_VARIABLE
 int pageblock_order __read_mostly;
 #endif
Index: linux-2.6/kernel/power/hibernate.c
===================================================================
--- linux-2.6.orig/kernel/power/hibernate.c
+++ linux-2.6/kernel/power/hibernate.c
@@ -323,6 +323,7 @@ static int create_image(int platform_mod
 int hibernation_snapshot(int platform_mode)
 {
 	int error;
+	gfp_t saved_mask;
 
 	error = platform_begin(platform_mode);
 	if (error)
@@ -334,6 +335,7 @@ int hibernation_snapshot(int platform_mo
 		goto Close;
 
 	suspend_console();
+	saved_mask = clear_gfp_allowed_mask(GFP_IOFS);
 	error = dpm_suspend_start(PMSG_FREEZE);
 	if (error)
 		goto Recover_platform;
@@ -351,6 +353,7 @@ int hibernation_snapshot(int platform_mo
 
 	dpm_resume_end(in_suspend ?
 		(error ? PMSG_RECOVER : PMSG_THAW) : PMSG_RESTORE);
+	set_gfp_allowed_mask(saved_mask);
 	resume_console();
  Close:
 	platform_end(platform_mode);
@@ -445,14 +448,17 @@ static int resume_target_kernel(bool pla
 int hibernation_restore(int platform_mode)
 {
 	int error;
+	gfp_t saved_mask;
 
 	pm_prepare_console();
 	suspend_console();
+	saved_mask = clear_gfp_allowed_mask(GFP_IOFS);
 	error = dpm_suspend_start(PMSG_QUIESCE);
 	if (!error) {
 		error = resume_target_kernel(platform_mode);
 		dpm_resume_end(PMSG_RECOVER);
 	}
+	set_gfp_allowed_mask(saved_mask);
 	resume_console();
 	pm_restore_console();
 	return error;
@@ -466,6 +472,7 @@ int hibernation_restore(int platform_mod
 int hibernation_platform_enter(void)
 {
 	int error;
+	gfp_t saved_mask;
 
 	if (!hibernation_ops)
 		return -ENOSYS;
@@ -481,6 +488,7 @@ int hibernation_platform_enter(void)
 
 	entering_platform_hibernation = true;
 	suspend_console();
+	saved_mask = clear_gfp_allowed_mask(GFP_IOFS);
 	error = dpm_suspend_start(PMSG_HIBERNATE);
 	if (error) {
 		if (hibernation_ops->recover)
@@ -518,6 +526,7 @@ int hibernation_platform_enter(void)
  Resume_devices:
 	entering_platform_hibernation = false;
 	dpm_resume_end(PMSG_RESTORE);
+	set_gfp_allowed_mask(saved_mask);
 	resume_console();
 
  Close:
Index: linux-2.6/kernel/power/suspend.c
===================================================================
--- linux-2.6.orig/kernel/power/suspend.c
+++ linux-2.6/kernel/power/suspend.c
@@ -198,6 +198,7 @@ static int suspend_enter(suspend_state_t
 int suspend_devices_and_enter(suspend_state_t state)
 {
 	int error;
+	gfp_t saved_mask;
 
 	if (!suspend_ops)
 		return -ENOSYS;
@@ -208,6 +209,7 @@ int suspend_devices_and_enter(suspend_st
 			goto Close;
 	}
 	suspend_console();
+	saved_mask = clear_gfp_allowed_mask(GFP_IOFS);
 	suspend_test_start();
 	error = dpm_suspend_start(PMSG_SUSPEND);
 	if (error) {
@@ -224,6 +226,7 @@ int suspend_devices_and_enter(suspend_st
 	suspend_test_start();
 	dpm_resume_end(PMSG_RESUME);
 	suspend_test_finish("resume devices");
+	set_gfp_allowed_mask(saved_mask);
 	resume_console();
  Close:
 	if (suspend_ops->end)

Re: s2disk hang update

[Rafael J. Wysocki]

On Tuesday 16 February 2010, Alan Jenkins wrote:
> On 2/16/10, Alan Jenkins <sourcejedi.lkml@googlemail.com> wrote:
> > On 2/15/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >> On Tuesday 09 February 2010, Alan Jenkins wrote:
> >>> Perhaps I spoke too soon.  I see the same hang if I run too many
> >>> applications.  The first hibernation fails with "not enough swap" as
> >>> expected, but the second or third attempt hangs (with the same backtrace
> >>> as before).
> >>>
> >>> The patch definitely helps though.  Without the patch, I see a hang the
> >>> first time I try to hibernate with too many applications running.
> >>
> >> Well, I have an idea.
> >>
> >> Can you try to apply the appended patch in addition and see if that
> >> helps?
> >>
> >> Rafael
> >
> > It doesn't seem to help.
> 
> To be clear: It doesn't stop the hang when I hibernate with too many
> applications.
> 
> It does stop the same hang in a different case though.
> 
> 1. boot with init=/bin/bash
> 2. run s2disk
> 3. cancel the s2disk
> 4. repeat steps 2&3
> 
> With the patch, I can run 10s of iterations, with no hang.
> Without the patch, it soon hangs, (in disable_nonboot_cpus(), as always).
> 
> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no problem.
> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an allocation
> failure after a couple of iterations ("kthreadd: page allocation
> failure. order:1, mode:0xd0").  It looks like it might be the same
> stop_machine thread allocation failure that causes the hang.

Have you tested it alone or on top of the previous one?  If you've tested it
alone, please apply the appended one in addition to it and retest.

Rafael

---
From: Rafael J. Wysocki <rjw@sisk.pl>
Subject: MM / PM: Force GFP_NOIO during suspend/hibernation and resume (rev. 3)

There are quite a few GFP_KERNEL memory allocations made during
suspend/hibernation and resume that may cause the system to hang,
because the I/O operations they depend on cannot be completed due to
the underlying devices being suspended.

Avoid this problem by clearing the __GFP_IO and __GFP_FS bits in
gfp_allowed_mask before suspend/hibernation and restoring the
original values of these bits in gfp_allowed_mask durig the
subsequent resume.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Reported-by: Maxim Levitsky <maximlevitsky@gmail.com>
---
 include/linux/gfp.h      |    7 +++----
 init/main.c              |    2 +-
 kernel/power/hibernate.c |    9 +++++++++
 kernel/power/suspend.c   |    3 +++
 mm/page_alloc.c          |   26 ++++++++++++++++++++++++++
 5 files changed, 42 insertions(+), 5 deletions(-)

Index: linux-2.6/include/linux/gfp.h
===================================================================
--- linux-2.6.orig/include/linux/gfp.h
+++ linux-2.6/include/linux/gfp.h
@@ -83,6 +83,7 @@ struct vm_area_struct;
 #define GFP_HIGHUSER_MOVABLE	(__GFP_WAIT | __GFP_IO | __GFP_FS | \
 				 __GFP_HARDWALL | __GFP_HIGHMEM | \
 				 __GFP_MOVABLE)
+#define GFP_IOFS	(__GFP_IO | __GFP_FS)
 
 #ifdef CONFIG_NUMA
 #define GFP_THISNODE	(__GFP_THISNODE | __GFP_NOWARN | __GFP_NORETRY)
@@ -337,9 +338,7 @@ void drain_local_pages(void *dummy);
 
 extern gfp_t gfp_allowed_mask;
 
-static inline void set_gfp_allowed_mask(gfp_t mask)
-{
-	gfp_allowed_mask = mask;
-}
+extern void set_gfp_allowed_mask(gfp_t mask);
+extern gfp_t clear_gfp_allowed_mask(gfp_t mask);
 
 #endif /* __LINUX_GFP_H */
Index: linux-2.6/init/main.c
===================================================================
--- linux-2.6.orig/init/main.c
+++ linux-2.6/init/main.c
@@ -601,7 +601,7 @@ asmlinkage void __init start_kernel(void
 	local_irq_enable();
 
 	/* Interrupts are enabled now so all GFP allocations are safe. */
-	set_gfp_allowed_mask(__GFP_BITS_MASK);
+	gfp_allowed_mask = __GFP_BITS_MASK;
 
 	kmem_cache_init_late();
 
Index: linux-2.6/mm/page_alloc.c
===================================================================
--- linux-2.6.orig/mm/page_alloc.c
+++ linux-2.6/mm/page_alloc.c
@@ -76,6 +76,32 @@ unsigned long totalreserve_pages __read_
 int percpu_pagelist_fraction;
 gfp_t gfp_allowed_mask __read_mostly = GFP_BOOT_MASK;
 
+#ifdef CONFIG_PM_SLEEP
+/*
+ * The following functions are used by the suspend/hibernate code to temporarily
+ * change gfp_allowed_mask in order to avoid using I/O during memory allocations
+ * while devices are suspended.  To avoid races with the suspend/hibernate code,
+ * they should always be called with pm_mutex held (gfp_allowed_mask also should
+ * only be modified with pm_mutex held, unless the suspend/hibernate code is
+ * guaranteed not to run in parallel with that modification).
+ */
+
+void set_gfp_allowed_mask(gfp_t mask)
+{
+	WARN_ON(!mutex_is_locked(&pm_mutex));
+	gfp_allowed_mask = mask;
+}
+
+gfp_t clear_gfp_allowed_mask(gfp_t mask)
+{
+	gfp_t ret = gfp_allowed_mask;
+
+	WARN_ON(!mutex_is_locked(&pm_mutex));
+	gfp_allowed_mask &= ~mask;
+	return ret;
+}
+#endif /* CONFIG_PM_SLEEP */
+
 #ifdef CONFIG_HUGETLB_PAGE_SIZE_VARIABLE
 int pageblock_order __read_mostly;
 #endif
Index: linux-2.6/kernel/power/hibernate.c
===================================================================
--- linux-2.6.orig/kernel/power/hibernate.c
+++ linux-2.6/kernel/power/hibernate.c
@@ -323,6 +323,7 @@ static int create_image(int platform_mod
 int hibernation_snapshot(int platform_mode)
 {
 	int error;
+	gfp_t saved_mask;
 
 	error = platform_begin(platform_mode);
 	if (error)
@@ -334,6 +335,7 @@ int hibernation_snapshot(int platform_mo
 		goto Close;
 
 	suspend_console();
+	saved_mask = clear_gfp_allowed_mask(GFP_IOFS);
 	error = dpm_suspend_start(PMSG_FREEZE);
 	if (error)
 		goto Recover_platform;
@@ -351,6 +353,7 @@ int hibernation_snapshot(int platform_mo
 
 	dpm_resume_end(in_suspend ?
 		(error ? PMSG_RECOVER : PMSG_THAW) : PMSG_RESTORE);
+	set_gfp_allowed_mask(saved_mask);
 	resume_console();
  Close:
 	platform_end(platform_mode);
@@ -445,14 +448,17 @@ static int resume_target_kernel(bool pla
 int hibernation_restore(int platform_mode)
 {
 	int error;
+	gfp_t saved_mask;
 
 	pm_prepare_console();
 	suspend_console();
+	saved_mask = clear_gfp_allowed_mask(GFP_IOFS);
 	error = dpm_suspend_start(PMSG_QUIESCE);
 	if (!error) {
 		error = resume_target_kernel(platform_mode);
 		dpm_resume_end(PMSG_RECOVER);
 	}
+	set_gfp_allowed_mask(saved_mask);
 	resume_console();
 	pm_restore_console();
 	return error;
@@ -466,6 +472,7 @@ int hibernation_restore(int platform_mod
 int hibernation_platform_enter(void)
 {
 	int error;
+	gfp_t saved_mask;
 
 	if (!hibernation_ops)
 		return -ENOSYS;
@@ -481,6 +488,7 @@ int hibernation_platform_enter(void)
 
 	entering_platform_hibernation = true;
 	suspend_console();
+	saved_mask = clear_gfp_allowed_mask(GFP_IOFS);
 	error = dpm_suspend_start(PMSG_HIBERNATE);
 	if (error) {
 		if (hibernation_ops->recover)
@@ -518,6 +526,7 @@ int hibernation_platform_enter(void)
  Resume_devices:
 	entering_platform_hibernation = false;
 	dpm_resume_end(PMSG_RESTORE);
+	set_gfp_allowed_mask(saved_mask);
 	resume_console();
 
  Close:
Index: linux-2.6/kernel/power/suspend.c
===================================================================
--- linux-2.6.orig/kernel/power/suspend.c
+++ linux-2.6/kernel/power/suspend.c
@@ -198,6 +198,7 @@ static int suspend_enter(suspend_state_t
 int suspend_devices_and_enter(suspend_state_t state)
 {
 	int error;
+	gfp_t saved_mask;
 
 	if (!suspend_ops)
 		return -ENOSYS;
@@ -208,6 +209,7 @@ int suspend_devices_and_enter(suspend_st
 			goto Close;
 	}
 	suspend_console();
+	saved_mask = clear_gfp_allowed_mask(GFP_IOFS);
 	suspend_test_start();
 	error = dpm_suspend_start(PMSG_SUSPEND);
 	if (error) {
@@ -224,6 +226,7 @@ int suspend_devices_and_enter(suspend_st
 	suspend_test_start();
 	dpm_resume_end(PMSG_RESUME);
 	suspend_test_finish("resume devices");
+	set_gfp_allowed_mask(saved_mask);
 	resume_console();
  Close:
 	if (suspend_ops->end)

Re: s2disk hang update

[Rafael J. Wysocki]

On Tuesday 16 February 2010, Alan Jenkins wrote:
> On 2/16/10, Alan Jenkins <sourcejedi.lkml-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org> wrote:
> > On 2/15/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> >> On Tuesday 09 February 2010, Alan Jenkins wrote:
> >>> Perhaps I spoke too soon.  I see the same hang if I run too many
> >>> applications.  The first hibernation fails with "not enough swap" as
> >>> expected, but the second or third attempt hangs (with the same backtrace
> >>> as before).
> >>>
> >>> The patch definitely helps though.  Without the patch, I see a hang the
> >>> first time I try to hibernate with too many applications running.
> >>
> >> Well, I have an idea.
> >>
> >> Can you try to apply the appended patch in addition and see if that
> >> helps?
> >>
> >> Rafael
> >
> > It doesn't seem to help.
> 
> To be clear: It doesn't stop the hang when I hibernate with too many
> applications.
> 
> It does stop the same hang in a different case though.
> 
> 1. boot with init=/bin/bash
> 2. run s2disk
> 3. cancel the s2disk
> 4. repeat steps 2&3
> 
> With the patch, I can run 10s of iterations, with no hang.
> Without the patch, it soon hangs, (in disable_nonboot_cpus(), as always).
> 
> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no problem.
> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an allocation
> failure after a couple of iterations ("kthreadd: page allocation
> failure. order:1, mode:0xd0").  It looks like it might be the same
> stop_machine thread allocation failure that causes the hang.

Have you tested it alone or on top of the previous one?  If you've tested it
alone, please apply the appended one in addition to it and retest.

Rafael

---
From: Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org>
Subject: MM / PM: Force GFP_NOIO during suspend/hibernation and resume (rev. 3)

There are quite a few GFP_KERNEL memory allocations made during
suspend/hibernation and resume that may cause the system to hang,
because the I/O operations they depend on cannot be completed due to
the underlying devices being suspended.

Avoid this problem by clearing the __GFP_IO and __GFP_FS bits in
gfp_allowed_mask before suspend/hibernation and restoring the
original values of these bits in gfp_allowed_mask durig the
subsequent resume.

Signed-off-by: Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org>
Reported-by: Maxim Levitsky <maximlevitsky-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
---
 include/linux/gfp.h      |    7 +++----
 init/main.c              |    2 +-
 kernel/power/hibernate.c |    9 +++++++++
 kernel/power/suspend.c   |    3 +++
 mm/page_alloc.c          |   26 ++++++++++++++++++++++++++
 5 files changed, 42 insertions(+), 5 deletions(-)

Index: linux-2.6/include/linux/gfp.h
===================================================================
--- linux-2.6.orig/include/linux/gfp.h
+++ linux-2.6/include/linux/gfp.h
@@ -83,6 +83,7 @@ struct vm_area_struct;
 #define GFP_HIGHUSER_MOVABLE	(__GFP_WAIT | __GFP_IO | __GFP_FS | \
 				 __GFP_HARDWALL | __GFP_HIGHMEM | \
 				 __GFP_MOVABLE)
+#define GFP_IOFS	(__GFP_IO | __GFP_FS)
 
 #ifdef CONFIG_NUMA
 #define GFP_THISNODE	(__GFP_THISNODE | __GFP_NOWARN | __GFP_NORETRY)
@@ -337,9 +338,7 @@ void drain_local_pages(void *dummy);
 
 extern gfp_t gfp_allowed_mask;
 
-static inline void set_gfp_allowed_mask(gfp_t mask)
-{
-	gfp_allowed_mask = mask;
-}
+extern void set_gfp_allowed_mask(gfp_t mask);
+extern gfp_t clear_gfp_allowed_mask(gfp_t mask);
 
 #endif /* __LINUX_GFP_H */
Index: linux-2.6/init/main.c
===================================================================
--- linux-2.6.orig/init/main.c
+++ linux-2.6/init/main.c
@@ -601,7 +601,7 @@ asmlinkage void __init start_kernel(void
 	local_irq_enable();
 
 	/* Interrupts are enabled now so all GFP allocations are safe. */
-	set_gfp_allowed_mask(__GFP_BITS_MASK);
+	gfp_allowed_mask = __GFP_BITS_MASK;
 
 	kmem_cache_init_late();
 
Index: linux-2.6/mm/page_alloc.c
===================================================================
--- linux-2.6.orig/mm/page_alloc.c
+++ linux-2.6/mm/page_alloc.c
@@ -76,6 +76,32 @@ unsigned long totalreserve_pages __read_
 int percpu_pagelist_fraction;
 gfp_t gfp_allowed_mask __read_mostly = GFP_BOOT_MASK;
 
+#ifdef CONFIG_PM_SLEEP
+/*
+ * The following functions are used by the suspend/hibernate code to temporarily
+ * change gfp_allowed_mask in order to avoid using I/O during memory allocations
+ * while devices are suspended.  To avoid races with the suspend/hibernate code,
+ * they should always be called with pm_mutex held (gfp_allowed_mask also should
+ * only be modified with pm_mutex held, unless the suspend/hibernate code is
+ * guaranteed not to run in parallel with that modification).
+ */
+
+void set_gfp_allowed_mask(gfp_t mask)
+{
+	WARN_ON(!mutex_is_locked(&pm_mutex));
+	gfp_allowed_mask = mask;
+}
+
+gfp_t clear_gfp_allowed_mask(gfp_t mask)
+{
+	gfp_t ret = gfp_allowed_mask;
+
+	WARN_ON(!mutex_is_locked(&pm_mutex));
+	gfp_allowed_mask &= ~mask;
+	return ret;
+}
+#endif /* CONFIG_PM_SLEEP */
+
 #ifdef CONFIG_HUGETLB_PAGE_SIZE_VARIABLE
 int pageblock_order __read_mostly;
 #endif
Index: linux-2.6/kernel/power/hibernate.c
===================================================================
--- linux-2.6.orig/kernel/power/hibernate.c
+++ linux-2.6/kernel/power/hibernate.c
@@ -323,6 +323,7 @@ static int create_image(int platform_mod
 int hibernation_snapshot(int platform_mode)
 {
 	int error;
+	gfp_t saved_mask;
 
 	error = platform_begin(platform_mode);
 	if (error)
@@ -334,6 +335,7 @@ int hibernation_snapshot(int platform_mo
 		goto Close;
 
 	suspend_console();
+	saved_mask = clear_gfp_allowed_mask(GFP_IOFS);
 	error = dpm_suspend_start(PMSG_FREEZE);
 	if (error)
 		goto Recover_platform;
@@ -351,6 +353,7 @@ int hibernation_snapshot(int platform_mo
 
 	dpm_resume_end(in_suspend ?
 		(error ? PMSG_RECOVER : PMSG_THAW) : PMSG_RESTORE);
+	set_gfp_allowed_mask(saved_mask);
 	resume_console();
  Close:
 	platform_end(platform_mode);
@@ -445,14 +448,17 @@ static int resume_target_kernel(bool pla
 int hibernation_restore(int platform_mode)
 {
 	int error;
+	gfp_t saved_mask;
 
 	pm_prepare_console();
 	suspend_console();
+	saved_mask = clear_gfp_allowed_mask(GFP_IOFS);
 	error = dpm_suspend_start(PMSG_QUIESCE);
 	if (!error) {
 		error = resume_target_kernel(platform_mode);
 		dpm_resume_end(PMSG_RECOVER);
 	}
+	set_gfp_allowed_mask(saved_mask);
 	resume_console();
 	pm_restore_console();
 	return error;
@@ -466,6 +472,7 @@ int hibernation_restore(int platform_mod
 int hibernation_platform_enter(void)
 {
 	int error;
+	gfp_t saved_mask;
 
 	if (!hibernation_ops)
 		return -ENOSYS;
@@ -481,6 +488,7 @@ int hibernation_platform_enter(void)
 
 	entering_platform_hibernation = true;
 	suspend_console();
+	saved_mask = clear_gfp_allowed_mask(GFP_IOFS);
 	error = dpm_suspend_start(PMSG_HIBERNATE);
 	if (error) {
 		if (hibernation_ops->recover)
@@ -518,6 +526,7 @@ int hibernation_platform_enter(void)
  Resume_devices:
 	entering_platform_hibernation = false;
 	dpm_resume_end(PMSG_RESTORE);
+	set_gfp_allowed_mask(saved_mask);
 	resume_console();
 
  Close:
Index: linux-2.6/kernel/power/suspend.c
===================================================================
--- linux-2.6.orig/kernel/power/suspend.c
+++ linux-2.6/kernel/power/suspend.c
@@ -198,6 +198,7 @@ static int suspend_enter(suspend_state_t
 int suspend_devices_and_enter(suspend_state_t state)
 {
 	int error;
+	gfp_t saved_mask;
 
 	if (!suspend_ops)
 		return -ENOSYS;
@@ -208,6 +209,7 @@ int suspend_devices_and_enter(suspend_st
 			goto Close;
 	}
 	suspend_console();
+	saved_mask = clear_gfp_allowed_mask(GFP_IOFS);
 	suspend_test_start();
 	error = dpm_suspend_start(PMSG_SUSPEND);
 	if (error) {
@@ -224,6 +226,7 @@ int suspend_devices_and_enter(suspend_st
 	suspend_test_start();
 	dpm_resume_end(PMSG_RESUME);
 	suspend_test_finish("resume devices");
+	set_gfp_allowed_mask(saved_mask);
 	resume_console();
  Close:
 	if (suspend_ops->end)

Re: s2disk hang update

[Alan Jenkins]

On 2/16/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> On Tuesday 16 February 2010, Alan Jenkins wrote:
>> On 2/16/10, Alan Jenkins <sourcejedi.lkml@googlemail.com> wrote:
>> > On 2/15/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> >> On Tuesday 09 February 2010, Alan Jenkins wrote:
>> >>> Perhaps I spoke too soon.  I see the same hang if I run too many
>> >>> applications.  The first hibernation fails with "not enough swap" as
>> >>> expected, but the second or third attempt hangs (with the same
>> >>> backtrace
>> >>> as before).
>> >>>
>> >>> The patch definitely helps though.  Without the patch, I see a hang
>> >>> the
>> >>> first time I try to hibernate with too many applications running.
>> >>
>> >> Well, I have an idea.
>> >>
>> >> Can you try to apply the appended patch in addition and see if that
>> >> helps?
>> >>
>> >> Rafael
>> >
>> > It doesn't seem to help.
>>
>> To be clear: It doesn't stop the hang when I hibernate with too many
>> applications.
>>
>> It does stop the same hang in a different case though.
>>
>> 1. boot with init=/bin/bash
>> 2. run s2disk
>> 3. cancel the s2disk
>> 4. repeat steps 2&3
>>
>> With the patch, I can run 10s of iterations, with no hang.
>> Without the patch, it soon hangs, (in disable_nonboot_cpus(), as always).
>>
>> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no problem.
>> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an allocation
>> failure after a couple of iterations ("kthreadd: page allocation
>> failure. order:1, mode:0xd0").  It looks like it might be the same
>> stop_machine thread allocation failure that causes the hang.
>
> Have you tested it alone or on top of the previous one?  If you've tested it
> alone, please apply the appended one in addition to it and retest.
>
> Rafael

I did test with both patches applied together -

1. [Update] MM / PM: Force GFP_NOIO during suspend/hibernation and resume
2. "reducing the number of pages that we're going to keep preallocated by 20%"

Alan

Re: s2disk hang update

[Alan Jenkins]

On 2/16/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> On Tuesday 16 February 2010, Alan Jenkins wrote:
>> On 2/16/10, Alan Jenkins <sourcejedi.lkml@googlemail.com> wrote:
>> > On 2/15/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> >> On Tuesday 09 February 2010, Alan Jenkins wrote:
>> >>> Perhaps I spoke too soon.  I see the same hang if I run too many
>> >>> applications.  The first hibernation fails with "not enough swap" as
>> >>> expected, but the second or third attempt hangs (with the same
>> >>> backtrace
>> >>> as before).
>> >>>
>> >>> The patch definitely helps though.  Without the patch, I see a hang
>> >>> the
>> >>> first time I try to hibernate with too many applications running.
>> >>
>> >> Well, I have an idea.
>> >>
>> >> Can you try to apply the appended patch in addition and see if that
>> >> helps?
>> >>
>> >> Rafael
>> >
>> > It doesn't seem to help.
>>
>> To be clear: It doesn't stop the hang when I hibernate with too many
>> applications.
>>
>> It does stop the same hang in a different case though.
>>
>> 1. boot with init=/bin/bash
>> 2. run s2disk
>> 3. cancel the s2disk
>> 4. repeat steps 2&3
>>
>> With the patch, I can run 10s of iterations, with no hang.
>> Without the patch, it soon hangs, (in disable_nonboot_cpus(), as always).
>>
>> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no problem.
>> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an allocation
>> failure after a couple of iterations ("kthreadd: page allocation
>> failure. order:1, mode:0xd0").  It looks like it might be the same
>> stop_machine thread allocation failure that causes the hang.
>
> Have you tested it alone or on top of the previous one?  If you've tested it
> alone, please apply the appended one in addition to it and retest.
>
> Rafael

I did test with both patches applied together -

1. [Update] MM / PM: Force GFP_NOIO during suspend/hibernation and resume
2. "reducing the number of pages that we're going to keep preallocated by 20%"

Alan

Re: s2disk hang update

[Alan Jenkins]

On 2/16/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> On Tuesday 16 February 2010, Alan Jenkins wrote:
>> On 2/16/10, Alan Jenkins <sourcejedi.lkml-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org> wrote:
>> > On 2/15/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
>> >> On Tuesday 09 February 2010, Alan Jenkins wrote:
>> >>> Perhaps I spoke too soon.  I see the same hang if I run too many
>> >>> applications.  The first hibernation fails with "not enough swap" as
>> >>> expected, but the second or third attempt hangs (with the same
>> >>> backtrace
>> >>> as before).
>> >>>
>> >>> The patch definitely helps though.  Without the patch, I see a hang
>> >>> the
>> >>> first time I try to hibernate with too many applications running.
>> >>
>> >> Well, I have an idea.
>> >>
>> >> Can you try to apply the appended patch in addition and see if that
>> >> helps?
>> >>
>> >> Rafael
>> >
>> > It doesn't seem to help.
>>
>> To be clear: It doesn't stop the hang when I hibernate with too many
>> applications.
>>
>> It does stop the same hang in a different case though.
>>
>> 1. boot with init=/bin/bash
>> 2. run s2disk
>> 3. cancel the s2disk
>> 4. repeat steps 2&3
>>
>> With the patch, I can run 10s of iterations, with no hang.
>> Without the patch, it soon hangs, (in disable_nonboot_cpus(), as always).
>>
>> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no problem.
>> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an allocation
>> failure after a couple of iterations ("kthreadd: page allocation
>> failure. order:1, mode:0xd0").  It looks like it might be the same
>> stop_machine thread allocation failure that causes the hang.
>
> Have you tested it alone or on top of the previous one?  If you've tested it
> alone, please apply the appended one in addition to it and retest.
>
> Rafael

I did test with both patches applied together -

1. [Update] MM / PM: Force GFP_NOIO during suspend/hibernation and resume
2. "reducing the number of pages that we're going to keep preallocated by 20%"

Alan

Re: s2disk hang update

[Rafael J. Wysocki]

On Wednesday 17 February 2010, Alan Jenkins wrote:
> On 2/16/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> > On Tuesday 16 February 2010, Alan Jenkins wrote:
> >> On 2/16/10, Alan Jenkins <sourcejedi.lkml@googlemail.com> wrote:
> >> > On 2/15/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >> >> On Tuesday 09 February 2010, Alan Jenkins wrote:
> >> >>> Perhaps I spoke too soon.  I see the same hang if I run too many
> >> >>> applications.  The first hibernation fails with "not enough swap" as
> >> >>> expected, but the second or third attempt hangs (with the same
> >> >>> backtrace
> >> >>> as before).
> >> >>>
> >> >>> The patch definitely helps though.  Without the patch, I see a hang
> >> >>> the
> >> >>> first time I try to hibernate with too many applications running.
> >> >>
> >> >> Well, I have an idea.
> >> >>
> >> >> Can you try to apply the appended patch in addition and see if that
> >> >> helps?
> >> >>
> >> >> Rafael
> >> >
> >> > It doesn't seem to help.
> >>
> >> To be clear: It doesn't stop the hang when I hibernate with too many
> >> applications.
> >>
> >> It does stop the same hang in a different case though.
> >>
> >> 1. boot with init=/bin/bash
> >> 2. run s2disk
> >> 3. cancel the s2disk
> >> 4. repeat steps 2&3
> >>
> >> With the patch, I can run 10s of iterations, with no hang.
> >> Without the patch, it soon hangs, (in disable_nonboot_cpus(), as always).
> >>
> >> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no problem.
> >> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an allocation
> >> failure after a couple of iterations ("kthreadd: page allocation
> >> failure. order:1, mode:0xd0").  It looks like it might be the same
> >> stop_machine thread allocation failure that causes the hang.
> >
> > Have you tested it alone or on top of the previous one?  If you've tested it
> > alone, please apply the appended one in addition to it and retest.
> >
> > Rafael
> 
> I did test with both patches applied together -
> 
> 1. [Update] MM / PM: Force GFP_NOIO during suspend/hibernation and resume
> 2. "reducing the number of pages that we're going to keep preallocated by 20%"

In that case you can try to reduce the number of preallocated pages even more,
ie. change "/ 5" to "/ 2" (for example) in the second patch.

Rafael

Re: s2disk hang update

[Rafael J. Wysocki]

On Wednesday 17 February 2010, Alan Jenkins wrote:
> On 2/16/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> > On Tuesday 16 February 2010, Alan Jenkins wrote:
> >> On 2/16/10, Alan Jenkins <sourcejedi.lkml-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org> wrote:
> >> > On 2/15/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> >> >> On Tuesday 09 February 2010, Alan Jenkins wrote:
> >> >>> Perhaps I spoke too soon.  I see the same hang if I run too many
> >> >>> applications.  The first hibernation fails with "not enough swap" as
> >> >>> expected, but the second or third attempt hangs (with the same
> >> >>> backtrace
> >> >>> as before).
> >> >>>
> >> >>> The patch definitely helps though.  Without the patch, I see a hang
> >> >>> the
> >> >>> first time I try to hibernate with too many applications running.
> >> >>
> >> >> Well, I have an idea.
> >> >>
> >> >> Can you try to apply the appended patch in addition and see if that
> >> >> helps?
> >> >>
> >> >> Rafael
> >> >
> >> > It doesn't seem to help.
> >>
> >> To be clear: It doesn't stop the hang when I hibernate with too many
> >> applications.
> >>
> >> It does stop the same hang in a different case though.
> >>
> >> 1. boot with init=/bin/bash
> >> 2. run s2disk
> >> 3. cancel the s2disk
> >> 4. repeat steps 2&3
> >>
> >> With the patch, I can run 10s of iterations, with no hang.
> >> Without the patch, it soon hangs, (in disable_nonboot_cpus(), as always).
> >>
> >> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no problem.
> >> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an allocation
> >> failure after a couple of iterations ("kthreadd: page allocation
> >> failure. order:1, mode:0xd0").  It looks like it might be the same
> >> stop_machine thread allocation failure that causes the hang.
> >
> > Have you tested it alone or on top of the previous one?  If you've tested it
> > alone, please apply the appended one in addition to it and retest.
> >
> > Rafael
> 
> I did test with both patches applied together -
> 
> 1. [Update] MM / PM: Force GFP_NOIO during suspend/hibernation and resume
> 2. "reducing the number of pages that we're going to keep preallocated by 20%"

In that case you can try to reduce the number of preallocated pages even more,
ie. change "/ 5" to "/ 2" (for example) in the second patch.

Rafael

Re: s2disk hang update

[Alan Jenkins]

On 2/17/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> On Wednesday 17 February 2010, Alan Jenkins wrote:
>> On 2/16/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> > On Tuesday 16 February 2010, Alan Jenkins wrote:
>> >> On 2/16/10, Alan Jenkins <sourcejedi.lkml@googlemail.com> wrote:
>> >> > On 2/15/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> >> >> On Tuesday 09 February 2010, Alan Jenkins wrote:
>> >> >>> Perhaps I spoke too soon.  I see the same hang if I run too many
>> >> >>> applications.  The first hibernation fails with "not enough swap"
>> >> >>> as
>> >> >>> expected, but the second or third attempt hangs (with the same
>> >> >>> backtrace
>> >> >>> as before).
>> >> >>>
>> >> >>> The patch definitely helps though.  Without the patch, I see a hang
>> >> >>> the
>> >> >>> first time I try to hibernate with too many applications running.
>> >> >>
>> >> >> Well, I have an idea.
>> >> >>
>> >> >> Can you try to apply the appended patch in addition and see if that
>> >> >> helps?
>> >> >>
>> >> >> Rafael
>> >> >
>> >> > It doesn't seem to help.
>> >>
>> >> To be clear: It doesn't stop the hang when I hibernate with too many
>> >> applications.
>> >>
>> >> It does stop the same hang in a different case though.
>> >>
>> >> 1. boot with init=/bin/bash
>> >> 2. run s2disk
>> >> 3. cancel the s2disk
>> >> 4. repeat steps 2&3
>> >>
>> >> With the patch, I can run 10s of iterations, with no hang.
>> >> Without the patch, it soon hangs, (in disable_nonboot_cpus(), as
>> >> always).
>> >>
>> >> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no problem.
>> >> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an allocation
>> >> failure after a couple of iterations ("kthreadd: page allocation
>> >> failure. order:1, mode:0xd0").  It looks like it might be the same
>> >> stop_machine thread allocation failure that causes the hang.
>> >
>> > Have you tested it alone or on top of the previous one?  If you've
>> > tested it
>> > alone, please apply the appended one in addition to it and retest.
>> >
>> > Rafael
>>
>> I did test with both patches applied together -
>>
>> 1. [Update] MM / PM: Force GFP_NOIO during suspend/hibernation and resume
>> 2. "reducing the number of pages that we're going to keep preallocated by
>> 20%"
>
> In that case you can try to reduce the number of preallocated pages even
> more,
> ie. change "/ 5" to "/ 2" (for example) in the second patch.

It still hangs if I try to hibernate a couple of times with too many
applications.

Alan

Re: s2disk hang update

[Alan Jenkins]

On 2/17/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> On Wednesday 17 February 2010, Alan Jenkins wrote:
>> On 2/16/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> > On Tuesday 16 February 2010, Alan Jenkins wrote:
>> >> On 2/16/10, Alan Jenkins <sourcejedi.lkml@googlemail.com> wrote:
>> >> > On 2/15/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> >> >> On Tuesday 09 February 2010, Alan Jenkins wrote:
>> >> >>> Perhaps I spoke too soon.  I see the same hang if I run too many
>> >> >>> applications.  The first hibernation fails with "not enough swap"
>> >> >>> as
>> >> >>> expected, but the second or third attempt hangs (with the same
>> >> >>> backtrace
>> >> >>> as before).
>> >> >>>
>> >> >>> The patch definitely helps though.  Without the patch, I see a hang
>> >> >>> the
>> >> >>> first time I try to hibernate with too many applications running.
>> >> >>
>> >> >> Well, I have an idea.
>> >> >>
>> >> >> Can you try to apply the appended patch in addition and see if that
>> >> >> helps?
>> >> >>
>> >> >> Rafael
>> >> >
>> >> > It doesn't seem to help.
>> >>
>> >> To be clear: It doesn't stop the hang when I hibernate with too many
>> >> applications.
>> >>
>> >> It does stop the same hang in a different case though.
>> >>
>> >> 1. boot with init=/bin/bash
>> >> 2. run s2disk
>> >> 3. cancel the s2disk
>> >> 4. repeat steps 2&3
>> >>
>> >> With the patch, I can run 10s of iterations, with no hang.
>> >> Without the patch, it soon hangs, (in disable_nonboot_cpus(), as
>> >> always).
>> >>
>> >> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no problem.
>> >> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an allocation
>> >> failure after a couple of iterations ("kthreadd: page allocation
>> >> failure. order:1, mode:0xd0").  It looks like it might be the same
>> >> stop_machine thread allocation failure that causes the hang.
>> >
>> > Have you tested it alone or on top of the previous one?  If you've
>> > tested it
>> > alone, please apply the appended one in addition to it and retest.
>> >
>> > Rafael
>>
>> I did test with both patches applied together -
>>
>> 1. [Update] MM / PM: Force GFP_NOIO during suspend/hibernation and resume
>> 2. "reducing the number of pages that we're going to keep preallocated by
>> 20%"
>
> In that case you can try to reduce the number of preallocated pages even
> more,
> ie. change "/ 5" to "/ 2" (for example) in the second patch.

It still hangs if I try to hibernate a couple of times with too many
applications.

Alan

Re: s2disk hang update

[Alan Jenkins]

On 2/17/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> On Wednesday 17 February 2010, Alan Jenkins wrote:
>> On 2/16/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
>> > On Tuesday 16 February 2010, Alan Jenkins wrote:
>> >> On 2/16/10, Alan Jenkins <sourcejedi.lkml-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org> wrote:
>> >> > On 2/15/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
>> >> >> On Tuesday 09 February 2010, Alan Jenkins wrote:
>> >> >>> Perhaps I spoke too soon.  I see the same hang if I run too many
>> >> >>> applications.  The first hibernation fails with "not enough swap"
>> >> >>> as
>> >> >>> expected, but the second or third attempt hangs (with the same
>> >> >>> backtrace
>> >> >>> as before).
>> >> >>>
>> >> >>> The patch definitely helps though.  Without the patch, I see a hang
>> >> >>> the
>> >> >>> first time I try to hibernate with too many applications running.
>> >> >>
>> >> >> Well, I have an idea.
>> >> >>
>> >> >> Can you try to apply the appended patch in addition and see if that
>> >> >> helps?
>> >> >>
>> >> >> Rafael
>> >> >
>> >> > It doesn't seem to help.
>> >>
>> >> To be clear: It doesn't stop the hang when I hibernate with too many
>> >> applications.
>> >>
>> >> It does stop the same hang in a different case though.
>> >>
>> >> 1. boot with init=/bin/bash
>> >> 2. run s2disk
>> >> 3. cancel the s2disk
>> >> 4. repeat steps 2&3
>> >>
>> >> With the patch, I can run 10s of iterations, with no hang.
>> >> Without the patch, it soon hangs, (in disable_nonboot_cpus(), as
>> >> always).
>> >>
>> >> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no problem.
>> >> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an allocation
>> >> failure after a couple of iterations ("kthreadd: page allocation
>> >> failure. order:1, mode:0xd0").  It looks like it might be the same
>> >> stop_machine thread allocation failure that causes the hang.
>> >
>> > Have you tested it alone or on top of the previous one?  If you've
>> > tested it
>> > alone, please apply the appended one in addition to it and retest.
>> >
>> > Rafael
>>
>> I did test with both patches applied together -
>>
>> 1. [Update] MM / PM: Force GFP_NOIO during suspend/hibernation and resume
>> 2. "reducing the number of pages that we're going to keep preallocated by
>> 20%"
>
> In that case you can try to reduce the number of preallocated pages even
> more,
> ie. change "/ 5" to "/ 2" (for example) in the second patch.

It still hangs if I try to hibernate a couple of times with too many
applications.

Alan

Re: s2disk hang update

[Rafael J. Wysocki]

On Thursday 18 February 2010, Alan Jenkins wrote:
> On 2/17/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> > On Wednesday 17 February 2010, Alan Jenkins wrote:
> >> On 2/16/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >> > On Tuesday 16 February 2010, Alan Jenkins wrote:
> >> >> On 2/16/10, Alan Jenkins <sourcejedi.lkml@googlemail.com> wrote:
> >> >> > On 2/15/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >> >> >> On Tuesday 09 February 2010, Alan Jenkins wrote:
> >> >> >>> Perhaps I spoke too soon.  I see the same hang if I run too many
> >> >> >>> applications.  The first hibernation fails with "not enough swap"
> >> >> >>> as
> >> >> >>> expected, but the second or third attempt hangs (with the same
> >> >> >>> backtrace
> >> >> >>> as before).
> >> >> >>>
> >> >> >>> The patch definitely helps though.  Without the patch, I see a hang
> >> >> >>> the
> >> >> >>> first time I try to hibernate with too many applications running.
> >> >> >>
> >> >> >> Well, I have an idea.
> >> >> >>
> >> >> >> Can you try to apply the appended patch in addition and see if that
> >> >> >> helps?
> >> >> >>
> >> >> >> Rafael
> >> >> >
> >> >> > It doesn't seem to help.
> >> >>
> >> >> To be clear: It doesn't stop the hang when I hibernate with too many
> >> >> applications.
> >> >>
> >> >> It does stop the same hang in a different case though.
> >> >>
> >> >> 1. boot with init=/bin/bash
> >> >> 2. run s2disk
> >> >> 3. cancel the s2disk
> >> >> 4. repeat steps 2&3
> >> >>
> >> >> With the patch, I can run 10s of iterations, with no hang.
> >> >> Without the patch, it soon hangs, (in disable_nonboot_cpus(), as
> >> >> always).
> >> >>
> >> >> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no problem.
> >> >> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an allocation
> >> >> failure after a couple of iterations ("kthreadd: page allocation
> >> >> failure. order:1, mode:0xd0").  It looks like it might be the same
> >> >> stop_machine thread allocation failure that causes the hang.
> >> >
> >> > Have you tested it alone or on top of the previous one?  If you've
> >> > tested it
> >> > alone, please apply the appended one in addition to it and retest.
> >> >
> >> > Rafael
> >>
> >> I did test with both patches applied together -
> >>
> >> 1. [Update] MM / PM: Force GFP_NOIO during suspend/hibernation and resume
> >> 2. "reducing the number of pages that we're going to keep preallocated by
> >> 20%"
> >
> > In that case you can try to reduce the number of preallocated pages even
> > more,
> > ie. change "/ 5" to "/ 2" (for example) in the second patch.
> 
> It still hangs if I try to hibernate a couple of times with too many
> applications.

Hmm.  I guess I asked that before, but is this a 32-bit or 64-bit system and
how much RAM is there in the box?

Rafael

Re: s2disk hang update

[Rafael J. Wysocki]

On Thursday 18 February 2010, Alan Jenkins wrote:
> On 2/17/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> > On Wednesday 17 February 2010, Alan Jenkins wrote:
> >> On 2/16/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> >> > On Tuesday 16 February 2010, Alan Jenkins wrote:
> >> >> On 2/16/10, Alan Jenkins <sourcejedi.lkml-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org> wrote:
> >> >> > On 2/15/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> >> >> >> On Tuesday 09 February 2010, Alan Jenkins wrote:
> >> >> >>> Perhaps I spoke too soon.  I see the same hang if I run too many
> >> >> >>> applications.  The first hibernation fails with "not enough swap"
> >> >> >>> as
> >> >> >>> expected, but the second or third attempt hangs (with the same
> >> >> >>> backtrace
> >> >> >>> as before).
> >> >> >>>
> >> >> >>> The patch definitely helps though.  Without the patch, I see a hang
> >> >> >>> the
> >> >> >>> first time I try to hibernate with too many applications running.
> >> >> >>
> >> >> >> Well, I have an idea.
> >> >> >>
> >> >> >> Can you try to apply the appended patch in addition and see if that
> >> >> >> helps?
> >> >> >>
> >> >> >> Rafael
> >> >> >
> >> >> > It doesn't seem to help.
> >> >>
> >> >> To be clear: It doesn't stop the hang when I hibernate with too many
> >> >> applications.
> >> >>
> >> >> It does stop the same hang in a different case though.
> >> >>
> >> >> 1. boot with init=/bin/bash
> >> >> 2. run s2disk
> >> >> 3. cancel the s2disk
> >> >> 4. repeat steps 2&3
> >> >>
> >> >> With the patch, I can run 10s of iterations, with no hang.
> >> >> Without the patch, it soon hangs, (in disable_nonboot_cpus(), as
> >> >> always).
> >> >>
> >> >> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no problem.
> >> >> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an allocation
> >> >> failure after a couple of iterations ("kthreadd: page allocation
> >> >> failure. order:1, mode:0xd0").  It looks like it might be the same
> >> >> stop_machine thread allocation failure that causes the hang.
> >> >
> >> > Have you tested it alone or on top of the previous one?  If you've
> >> > tested it
> >> > alone, please apply the appended one in addition to it and retest.
> >> >
> >> > Rafael
> >>
> >> I did test with both patches applied together -
> >>
> >> 1. [Update] MM / PM: Force GFP_NOIO during suspend/hibernation and resume
> >> 2. "reducing the number of pages that we're going to keep preallocated by
> >> 20%"
> >
> > In that case you can try to reduce the number of preallocated pages even
> > more,
> > ie. change "/ 5" to "/ 2" (for example) in the second patch.
> 
> It still hangs if I try to hibernate a couple of times with too many
> applications.

Hmm.  I guess I asked that before, but is this a 32-bit or 64-bit system and
how much RAM is there in the box?

Rafael

Re: s2disk hang update

[Alan Jenkins]

On 2/18/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> On Thursday 18 February 2010, Alan Jenkins wrote:
>> On 2/17/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> > On Wednesday 17 February 2010, Alan Jenkins wrote:
>> >> On 2/16/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> >> > On Tuesday 16 February 2010, Alan Jenkins wrote:
>> >> >> On 2/16/10, Alan Jenkins <sourcejedi.lkml@googlemail.com> wrote:
>> >> >> > On 2/15/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> >> >> >> On Tuesday 09 February 2010, Alan Jenkins wrote:
>> >> >> >>> Perhaps I spoke too soon.  I see the same hang if I run too many
>> >> >> >>> applications.  The first hibernation fails with "not enough
>> >> >> >>> swap"
>> >> >> >>> as
>> >> >> >>> expected, but the second or third attempt hangs (with the same
>> >> >> >>> backtrace
>> >> >> >>> as before).
>> >> >> >>>
>> >> >> >>> The patch definitely helps though.  Without the patch, I see a
>> >> >> >>> hang
>> >> >> >>> the
>> >> >> >>> first time I try to hibernate with too many applications
>> >> >> >>> running.
>> >> >> >>
>> >> >> >> Well, I have an idea.
>> >> >> >>
>> >> >> >> Can you try to apply the appended patch in addition and see if
>> >> >> >> that
>> >> >> >> helps?
>> >> >> >>
>> >> >> >> Rafael
>> >> >> >
>> >> >> > It doesn't seem to help.
>> >> >>
>> >> >> To be clear: It doesn't stop the hang when I hibernate with too many
>> >> >> applications.
>> >> >>
>> >> >> It does stop the same hang in a different case though.
>> >> >>
>> >> >> 1. boot with init=/bin/bash
>> >> >> 2. run s2disk
>> >> >> 3. cancel the s2disk
>> >> >> 4. repeat steps 2&3
>> >> >>
>> >> >> With the patch, I can run 10s of iterations, with no hang.
>> >> >> Without the patch, it soon hangs, (in disable_nonboot_cpus(), as
>> >> >> always).
>> >> >>
>> >> >> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no problem.
>> >> >> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an
>> >> >> allocation
>> >> >> failure after a couple of iterations ("kthreadd: page allocation
>> >> >> failure. order:1, mode:0xd0").  It looks like it might be the same
>> >> >> stop_machine thread allocation failure that causes the hang.
>> >> >
>> >> > Have you tested it alone or on top of the previous one?  If you've
>> >> > tested it
>> >> > alone, please apply the appended one in addition to it and retest.
>> >> >
>> >> > Rafael
>> >>
>> >> I did test with both patches applied together -
>> >>
>> >> 1. [Update] MM / PM: Force GFP_NOIO during suspend/hibernation and
>> >> resume
>> >> 2. "reducing the number of pages that we're going to keep preallocated
>> >> by
>> >> 20%"
>> >
>> > In that case you can try to reduce the number of preallocated pages even
>> > more,
>> > ie. change "/ 5" to "/ 2" (for example) in the second patch.
>>
>> It still hangs if I try to hibernate a couple of times with too many
>> applications.
>
> Hmm.  I guess I asked that before, but is this a 32-bit or 64-bit system and
> how much RAM is there in the box?
>
> Rafael

EeePC 701.  32 bit.  512Mb RAM.  350Mb swap file, on a "first-gen" SSD.

Alan

Re: s2disk hang update

[Alan Jenkins]

On 2/18/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> On Thursday 18 February 2010, Alan Jenkins wrote:
>> On 2/17/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> > On Wednesday 17 February 2010, Alan Jenkins wrote:
>> >> On 2/16/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> >> > On Tuesday 16 February 2010, Alan Jenkins wrote:
>> >> >> On 2/16/10, Alan Jenkins <sourcejedi.lkml@googlemail.com> wrote:
>> >> >> > On 2/15/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> >> >> >> On Tuesday 09 February 2010, Alan Jenkins wrote:
>> >> >> >>> Perhaps I spoke too soon.  I see the same hang if I run too many
>> >> >> >>> applications.  The first hibernation fails with "not enough
>> >> >> >>> swap"
>> >> >> >>> as
>> >> >> >>> expected, but the second or third attempt hangs (with the same
>> >> >> >>> backtrace
>> >> >> >>> as before).
>> >> >> >>>
>> >> >> >>> The patch definitely helps though.  Without the patch, I see a
>> >> >> >>> hang
>> >> >> >>> the
>> >> >> >>> first time I try to hibernate with too many applications
>> >> >> >>> running.
>> >> >> >>
>> >> >> >> Well, I have an idea.
>> >> >> >>
>> >> >> >> Can you try to apply the appended patch in addition and see if
>> >> >> >> that
>> >> >> >> helps?
>> >> >> >>
>> >> >> >> Rafael
>> >> >> >
>> >> >> > It doesn't seem to help.
>> >> >>
>> >> >> To be clear: It doesn't stop the hang when I hibernate with too many
>> >> >> applications.
>> >> >>
>> >> >> It does stop the same hang in a different case though.
>> >> >>
>> >> >> 1. boot with init=/bin/bash
>> >> >> 2. run s2disk
>> >> >> 3. cancel the s2disk
>> >> >> 4. repeat steps 2&3
>> >> >>
>> >> >> With the patch, I can run 10s of iterations, with no hang.
>> >> >> Without the patch, it soon hangs, (in disable_nonboot_cpus(), as
>> >> >> always).
>> >> >>
>> >> >> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no problem.
>> >> >> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an
>> >> >> allocation
>> >> >> failure after a couple of iterations ("kthreadd: page allocation
>> >> >> failure. order:1, mode:0xd0").  It looks like it might be the same
>> >> >> stop_machine thread allocation failure that causes the hang.
>> >> >
>> >> > Have you tested it alone or on top of the previous one?  If you've
>> >> > tested it
>> >> > alone, please apply the appended one in addition to it and retest.
>> >> >
>> >> > Rafael
>> >>
>> >> I did test with both patches applied together -
>> >>
>> >> 1. [Update] MM / PM: Force GFP_NOIO during suspend/hibernation and
>> >> resume
>> >> 2. "reducing the number of pages that we're going to keep preallocated
>> >> by
>> >> 20%"
>> >
>> > In that case you can try to reduce the number of preallocated pages even
>> > more,
>> > ie. change "/ 5" to "/ 2" (for example) in the second patch.
>>
>> It still hangs if I try to hibernate a couple of times with too many
>> applications.
>
> Hmm.  I guess I asked that before, but is this a 32-bit or 64-bit system and
> how much RAM is there in the box?
>
> Rafael

EeePC 701.  32 bit.  512Mb RAM.  350Mb swap file, on a "first-gen" SSD.

Alan

Re: s2disk hang update

[Alan Jenkins]

On 2/18/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> On Thursday 18 February 2010, Alan Jenkins wrote:
>> On 2/17/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
>> > On Wednesday 17 February 2010, Alan Jenkins wrote:
>> >> On 2/16/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
>> >> > On Tuesday 16 February 2010, Alan Jenkins wrote:
>> >> >> On 2/16/10, Alan Jenkins <sourcejedi.lkml-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org> wrote:
>> >> >> > On 2/15/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
>> >> >> >> On Tuesday 09 February 2010, Alan Jenkins wrote:
>> >> >> >>> Perhaps I spoke too soon.  I see the same hang if I run too many
>> >> >> >>> applications.  The first hibernation fails with "not enough
>> >> >> >>> swap"
>> >> >> >>> as
>> >> >> >>> expected, but the second or third attempt hangs (with the same
>> >> >> >>> backtrace
>> >> >> >>> as before).
>> >> >> >>>
>> >> >> >>> The patch definitely helps though.  Without the patch, I see a
>> >> >> >>> hang
>> >> >> >>> the
>> >> >> >>> first time I try to hibernate with too many applications
>> >> >> >>> running.
>> >> >> >>
>> >> >> >> Well, I have an idea.
>> >> >> >>
>> >> >> >> Can you try to apply the appended patch in addition and see if
>> >> >> >> that
>> >> >> >> helps?
>> >> >> >>
>> >> >> >> Rafael
>> >> >> >
>> >> >> > It doesn't seem to help.
>> >> >>
>> >> >> To be clear: It doesn't stop the hang when I hibernate with too many
>> >> >> applications.
>> >> >>
>> >> >> It does stop the same hang in a different case though.
>> >> >>
>> >> >> 1. boot with init=/bin/bash
>> >> >> 2. run s2disk
>> >> >> 3. cancel the s2disk
>> >> >> 4. repeat steps 2&3
>> >> >>
>> >> >> With the patch, I can run 10s of iterations, with no hang.
>> >> >> Without the patch, it soon hangs, (in disable_nonboot_cpus(), as
>> >> >> always).
>> >> >>
>> >> >> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no problem.
>> >> >> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an
>> >> >> allocation
>> >> >> failure after a couple of iterations ("kthreadd: page allocation
>> >> >> failure. order:1, mode:0xd0").  It looks like it might be the same
>> >> >> stop_machine thread allocation failure that causes the hang.
>> >> >
>> >> > Have you tested it alone or on top of the previous one?  If you've
>> >> > tested it
>> >> > alone, please apply the appended one in addition to it and retest.
>> >> >
>> >> > Rafael
>> >>
>> >> I did test with both patches applied together -
>> >>
>> >> 1. [Update] MM / PM: Force GFP_NOIO during suspend/hibernation and
>> >> resume
>> >> 2. "reducing the number of pages that we're going to keep preallocated
>> >> by
>> >> 20%"
>> >
>> > In that case you can try to reduce the number of preallocated pages even
>> > more,
>> > ie. change "/ 5" to "/ 2" (for example) in the second patch.
>>
>> It still hangs if I try to hibernate a couple of times with too many
>> applications.
>
> Hmm.  I guess I asked that before, but is this a 32-bit or 64-bit system and
> how much RAM is there in the box?
>
> Rafael

EeePC 701.  32 bit.  512Mb RAM.  350Mb swap file, on a "first-gen" SSD.

Alan

Re: s2disk hang update

[Rafael J. Wysocki]

On Friday 19 February 2010, Alan Jenkins wrote:
> On 2/18/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> > On Thursday 18 February 2010, Alan Jenkins wrote:
> >> On 2/17/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >> > On Wednesday 17 February 2010, Alan Jenkins wrote:
> >> >> On 2/16/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >> >> > On Tuesday 16 February 2010, Alan Jenkins wrote:
> >> >> >> On 2/16/10, Alan Jenkins <sourcejedi.lkml@googlemail.com> wrote:
> >> >> >> > On 2/15/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >> >> >> >> On Tuesday 09 February 2010, Alan Jenkins wrote:
> >> >> >> >>> Perhaps I spoke too soon.  I see the same hang if I run too many
> >> >> >> >>> applications.  The first hibernation fails with "not enough
> >> >> >> >>> swap"
> >> >> >> >>> as
> >> >> >> >>> expected, but the second or third attempt hangs (with the same
> >> >> >> >>> backtrace
> >> >> >> >>> as before).
> >> >> >> >>>
> >> >> >> >>> The patch definitely helps though.  Without the patch, I see a
> >> >> >> >>> hang
> >> >> >> >>> the
> >> >> >> >>> first time I try to hibernate with too many applications
> >> >> >> >>> running.
> >> >> >> >>
> >> >> >> >> Well, I have an idea.
> >> >> >> >>
> >> >> >> >> Can you try to apply the appended patch in addition and see if
> >> >> >> >> that
> >> >> >> >> helps?
> >> >> >> >>
> >> >> >> >> Rafael
> >> >> >> >
> >> >> >> > It doesn't seem to help.
> >> >> >>
> >> >> >> To be clear: It doesn't stop the hang when I hibernate with too many
> >> >> >> applications.
> >> >> >>
> >> >> >> It does stop the same hang in a different case though.
> >> >> >>
> >> >> >> 1. boot with init=/bin/bash
> >> >> >> 2. run s2disk
> >> >> >> 3. cancel the s2disk
> >> >> >> 4. repeat steps 2&3
> >> >> >>
> >> >> >> With the patch, I can run 10s of iterations, with no hang.
> >> >> >> Without the patch, it soon hangs, (in disable_nonboot_cpus(), as
> >> >> >> always).
> >> >> >>
> >> >> >> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no problem.
> >> >> >> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an
> >> >> >> allocation
> >> >> >> failure after a couple of iterations ("kthreadd: page allocation
> >> >> >> failure. order:1, mode:0xd0").  It looks like it might be the same
> >> >> >> stop_machine thread allocation failure that causes the hang.
> >> >> >
> >> >> > Have you tested it alone or on top of the previous one?  If you've
> >> >> > tested it
> >> >> > alone, please apply the appended one in addition to it and retest.
> >> >> >
> >> >> > Rafael
> >> >>
> >> >> I did test with both patches applied together -
> >> >>
> >> >> 1. [Update] MM / PM: Force GFP_NOIO during suspend/hibernation and
> >> >> resume
> >> >> 2. "reducing the number of pages that we're going to keep preallocated
> >> >> by
> >> >> 20%"
> >> >
> >> > In that case you can try to reduce the number of preallocated pages even
> >> > more,
> >> > ie. change "/ 5" to "/ 2" (for example) in the second patch.
> >>
> >> It still hangs if I try to hibernate a couple of times with too many
> >> applications.
> >
> > Hmm.  I guess I asked that before, but is this a 32-bit or 64-bit system and
> > how much RAM is there in the box?
> >
> > Rafael
> 
> EeePC 701.  32 bit.  512Mb RAM.  350Mb swap file, on a "first-gen" SSD.

Hmm.  I'd try to make  free_unnecessary_pages() free all of the preallocated
pages and see what happens.

Rafael

Re: s2disk hang update

[Alan Jenkins]

[-- Attachment #1: Type: text/plain, Size: 4346 bytes --]

Rafael J. Wysocki wrote:
> On Friday 19 February 2010, Alan Jenkins wrote:
>   
>> On 2/18/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>>     
>>> On Thursday 18 February 2010, Alan Jenkins wrote:
>>>       
>>>> On 2/17/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>>>>         
>>>>> On Wednesday 17 February 2010, Alan Jenkins wrote:
>>>>>           
>>>>>> On 2/16/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>>>>>>             
>>>>>>> On Tuesday 16 February 2010, Alan Jenkins wrote:
>>>>>>>               
>>>>>>>> On 2/16/10, Alan Jenkins <sourcejedi.lkml@googlemail.com> wrote:
>>>>>>>>                 
>>>>>>>>> On 2/15/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>>>>>>>>>                   
>>>>>>>>>> On Tuesday 09 February 2010, Alan Jenkins wrote:
>>>>>>>>>>                     
>>>>>>>>>>> Perhaps I spoke too soon.  I see the same hang if I run too many
>>>>>>>>>>> applications.  The first hibernation fails with "not enough
>>>>>>>>>>> swap"
>>>>>>>>>>> as
>>>>>>>>>>> expected, but the second or third attempt hangs (with the same
>>>>>>>>>>> backtrace
>>>>>>>>>>> as before).
>>>>>>>>>>>
>>>>>>>>>>> The patch definitely helps though.  Without the patch, I see a
>>>>>>>>>>> hang
>>>>>>>>>>> the
>>>>>>>>>>> first time I try to hibernate with too many applications
>>>>>>>>>>> running.
>>>>>>>>>>>                       
>>>>>>>>>> Well, I have an idea.
>>>>>>>>>>
>>>>>>>>>> Can you try to apply the appended patch in addition and see if
>>>>>>>>>> that
>>>>>>>>>> helps?
>>>>>>>>>>
>>>>>>>>>> Rafael
>>>>>>>>>>                     
>>>>>>>>> It doesn't seem to help.
>>>>>>>>>                   
>>>>>>>> To be clear: It doesn't stop the hang when I hibernate with too many
>>>>>>>> applications.
>>>>>>>>
>>>>>>>> It does stop the same hang in a different case though.
>>>>>>>>
>>>>>>>> 1. boot with init=/bin/bash
>>>>>>>> 2. run s2disk
>>>>>>>> 3. cancel the s2disk
>>>>>>>> 4. repeat steps 2&3
>>>>>>>>
>>>>>>>> With the patch, I can run 10s of iterations, with no hang.
>>>>>>>> Without the patch, it soon hangs, (in disable_nonboot_cpus(), as
>>>>>>>> always).
>>>>>>>>
>>>>>>>> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no problem.
>>>>>>>> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an
>>>>>>>> allocation
>>>>>>>> failure after a couple of iterations ("kthreadd: page allocation
>>>>>>>> failure. order:1, mode:0xd0").  It looks like it might be the same
>>>>>>>> stop_machine thread allocation failure that causes the hang.
>>>>>>>>                 
>>>>>>> Have you tested it alone or on top of the previous one?  If you've
>>>>>>> tested it
>>>>>>> alone, please apply the appended one in addition to it and retest.
>>>>>>>
>>>>>>> Rafael
>>>>>>>               
>>>>>> I did test with both patches applied together -
>>>>>>
>>>>>> 1. [Update] MM / PM: Force GFP_NOIO during suspend/hibernation and
>>>>>> resume
>>>>>> 2. "reducing the number of pages that we're going to keep preallocated
>>>>>> by
>>>>>> 20%"
>>>>>>             
>>>>> In that case you can try to reduce the number of preallocated pages even
>>>>> more,
>>>>> ie. change "/ 5" to "/ 2" (for example) in the second patch.
>>>>>           
>>>> It still hangs if I try to hibernate a couple of times with too many
>>>> applications.
>>>>         
>>> Hmm.  I guess I asked that before, but is this a 32-bit or 64-bit system and
>>> how much RAM is there in the box?
>>>
>>> Rafael
>>>       
>> EeePC 701.  32 bit.  512Mb RAM.  350Mb swap file, on a "first-gen" SSD.
>>     
>
> Hmm.  I'd try to make  free_unnecessary_pages() free all of the preallocated
> pages and see what happens.
>   

It still hangs in hibernation_snapshot() / disable_nonboot_cpus().  
After apparently freeing over 400Mb / 100,000 pages of preallocated ram.



There is a change which I missed before.  When I applied your first 
patch ("Force GFP_NOIO during suspend" etc.), it did change the hung 
task backtraces a bit.  I don't know if it tells us anything.

Without the patch, there were two backtraces.  The first backtrace 
suggested a problem allocating pages for a kernel thread (at 
copy_process() / try_to_free_pages()).  The second showed that this 
problem was blocking s2disk (at hibernation_snapshot() / 
disable_nonboot_cpus() / stop_machine_create()). 

With the GFP_NOIO patch, I see only the s2disk backtrace.


Thanks
Alan

[-- Attachment #2: free-all-prealloc.patch --]
[-- Type: text/x-diff, Size: 575 bytes --]

diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
index 36cb168..970930a 100644
--- a/kernel/power/snapshot.c
+++ b/kernel/power/snapshot.c
@@ -1179,6 +1179,12 @@ static void free_unnecessary_pages(void)
 		to_free_normal -= save_highmem - alloc_highmem;
 	}
 
+	to_free_normal = alloc_normal;
+	printk(KERN_ERR "Freeing all %d preallocated pages\n",
+			to_free_normal);
+	printk(KERN_ERR "(and %d highmem pages, out of %d)\n",
+			alloc_highmem, to_free_highmem);
+
 	memory_bm_position_reset(&copy_bm);
 
 	while (to_free_normal > 0 && to_free_highmem > 0) {

Re: s2disk hang update

[Alan Jenkins]

[-- Attachment #1: Type: text/plain, Size: 4455 bytes --]

Rafael J. Wysocki wrote:
> On Friday 19 February 2010, Alan Jenkins wrote:
>   
>> On 2/18/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
>>     
>>> On Thursday 18 February 2010, Alan Jenkins wrote:
>>>       
>>>> On 2/17/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
>>>>         
>>>>> On Wednesday 17 February 2010, Alan Jenkins wrote:
>>>>>           
>>>>>> On 2/16/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
>>>>>>             
>>>>>>> On Tuesday 16 February 2010, Alan Jenkins wrote:
>>>>>>>               
>>>>>>>> On 2/16/10, Alan Jenkins <sourcejedi.lkml-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org> wrote:
>>>>>>>>                 
>>>>>>>>> On 2/15/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
>>>>>>>>>                   
>>>>>>>>>> On Tuesday 09 February 2010, Alan Jenkins wrote:
>>>>>>>>>>                     
>>>>>>>>>>> Perhaps I spoke too soon.  I see the same hang if I run too many
>>>>>>>>>>> applications.  The first hibernation fails with "not enough
>>>>>>>>>>> swap"
>>>>>>>>>>> as
>>>>>>>>>>> expected, but the second or third attempt hangs (with the same
>>>>>>>>>>> backtrace
>>>>>>>>>>> as before).
>>>>>>>>>>>
>>>>>>>>>>> The patch definitely helps though.  Without the patch, I see a
>>>>>>>>>>> hang
>>>>>>>>>>> the
>>>>>>>>>>> first time I try to hibernate with too many applications
>>>>>>>>>>> running.
>>>>>>>>>>>                       
>>>>>>>>>> Well, I have an idea.
>>>>>>>>>>
>>>>>>>>>> Can you try to apply the appended patch in addition and see if
>>>>>>>>>> that
>>>>>>>>>> helps?
>>>>>>>>>>
>>>>>>>>>> Rafael
>>>>>>>>>>                     
>>>>>>>>> It doesn't seem to help.
>>>>>>>>>                   
>>>>>>>> To be clear: It doesn't stop the hang when I hibernate with too many
>>>>>>>> applications.
>>>>>>>>
>>>>>>>> It does stop the same hang in a different case though.
>>>>>>>>
>>>>>>>> 1. boot with init=/bin/bash
>>>>>>>> 2. run s2disk
>>>>>>>> 3. cancel the s2disk
>>>>>>>> 4. repeat steps 2&3
>>>>>>>>
>>>>>>>> With the patch, I can run 10s of iterations, with no hang.
>>>>>>>> Without the patch, it soon hangs, (in disable_nonboot_cpus(), as
>>>>>>>> always).
>>>>>>>>
>>>>>>>> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no problem.
>>>>>>>> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an
>>>>>>>> allocation
>>>>>>>> failure after a couple of iterations ("kthreadd: page allocation
>>>>>>>> failure. order:1, mode:0xd0").  It looks like it might be the same
>>>>>>>> stop_machine thread allocation failure that causes the hang.
>>>>>>>>                 
>>>>>>> Have you tested it alone or on top of the previous one?  If you've
>>>>>>> tested it
>>>>>>> alone, please apply the appended one in addition to it and retest.
>>>>>>>
>>>>>>> Rafael
>>>>>>>               
>>>>>> I did test with both patches applied together -
>>>>>>
>>>>>> 1. [Update] MM / PM: Force GFP_NOIO during suspend/hibernation and
>>>>>> resume
>>>>>> 2. "reducing the number of pages that we're going to keep preallocated
>>>>>> by
>>>>>> 20%"
>>>>>>             
>>>>> In that case you can try to reduce the number of preallocated pages even
>>>>> more,
>>>>> ie. change "/ 5" to "/ 2" (for example) in the second patch.
>>>>>           
>>>> It still hangs if I try to hibernate a couple of times with too many
>>>> applications.
>>>>         
>>> Hmm.  I guess I asked that before, but is this a 32-bit or 64-bit system and
>>> how much RAM is there in the box?
>>>
>>> Rafael
>>>       
>> EeePC 701.  32 bit.  512Mb RAM.  350Mb swap file, on a "first-gen" SSD.
>>     
>
> Hmm.  I'd try to make  free_unnecessary_pages() free all of the preallocated
> pages and see what happens.
>   

It still hangs in hibernation_snapshot() / disable_nonboot_cpus().  
After apparently freeing over 400Mb / 100,000 pages of preallocated ram.



There is a change which I missed before.  When I applied your first 
patch ("Force GFP_NOIO during suspend" etc.), it did change the hung 
task backtraces a bit.  I don't know if it tells us anything.

Without the patch, there were two backtraces.  The first backtrace 
suggested a problem allocating pages for a kernel thread (at 
copy_process() / try_to_free_pages()).  The second showed that this 
problem was blocking s2disk (at hibernation_snapshot() / 
disable_nonboot_cpus() / stop_machine_create()). 

With the GFP_NOIO patch, I see only the s2disk backtrace.


Thanks
Alan

[-- Attachment #2: free-all-prealloc.patch --]
[-- Type: text/x-diff, Size: 575 bytes --]

diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
index 36cb168..970930a 100644
--- a/kernel/power/snapshot.c
+++ b/kernel/power/snapshot.c
@@ -1179,6 +1179,12 @@ static void free_unnecessary_pages(void)
 		to_free_normal -= save_highmem - alloc_highmem;
 	}
 
+	to_free_normal = alloc_normal;
+	printk(KERN_ERR "Freeing all %d preallocated pages\n",
+			to_free_normal);
+	printk(KERN_ERR "(and %d highmem pages, out of %d)\n",
+			alloc_highmem, to_free_highmem);
+
 	memory_bm_position_reset(&copy_bm);
 
 	while (to_free_normal > 0 && to_free_highmem > 0) {

Re: s2disk hang update

[Rafael J. Wysocki]

On Monday 22 February 2010, Alan Jenkins wrote:
> Rafael J. Wysocki wrote:
> > On Friday 19 February 2010, Alan Jenkins wrote:
> >   
> >> On 2/18/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >>     
> >>> On Thursday 18 February 2010, Alan Jenkins wrote:
> >>>       
> >>>> On 2/17/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >>>>         
> >>>>> On Wednesday 17 February 2010, Alan Jenkins wrote:
> >>>>>           
> >>>>>> On 2/16/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >>>>>>             
> >>>>>>> On Tuesday 16 February 2010, Alan Jenkins wrote:
> >>>>>>>               
> >>>>>>>> On 2/16/10, Alan Jenkins <sourcejedi.lkml@googlemail.com> wrote:
> >>>>>>>>                 
> >>>>>>>>> On 2/15/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >>>>>>>>>                   
> >>>>>>>>>> On Tuesday 09 February 2010, Alan Jenkins wrote:
> >>>>>>>>>>                     
> >>>>>>>>>>> Perhaps I spoke too soon.  I see the same hang if I run too many
> >>>>>>>>>>> applications.  The first hibernation fails with "not enough
> >>>>>>>>>>> swap"
> >>>>>>>>>>> as
> >>>>>>>>>>> expected, but the second or third attempt hangs (with the same
> >>>>>>>>>>> backtrace
> >>>>>>>>>>> as before).
> >>>>>>>>>>>
> >>>>>>>>>>> The patch definitely helps though.  Without the patch, I see a
> >>>>>>>>>>> hang
> >>>>>>>>>>> the
> >>>>>>>>>>> first time I try to hibernate with too many applications
> >>>>>>>>>>> running.
> >>>>>>>>>>>                       
> >>>>>>>>>> Well, I have an idea.
> >>>>>>>>>>
> >>>>>>>>>> Can you try to apply the appended patch in addition and see if
> >>>>>>>>>> that
> >>>>>>>>>> helps?
> >>>>>>>>>>
> >>>>>>>>>> Rafael
> >>>>>>>>>>                     
> >>>>>>>>> It doesn't seem to help.
> >>>>>>>>>                   
> >>>>>>>> To be clear: It doesn't stop the hang when I hibernate with too many
> >>>>>>>> applications.
> >>>>>>>>
> >>>>>>>> It does stop the same hang in a different case though.
> >>>>>>>>
> >>>>>>>> 1. boot with init=/bin/bash
> >>>>>>>> 2. run s2disk
> >>>>>>>> 3. cancel the s2disk
> >>>>>>>> 4. repeat steps 2&3
> >>>>>>>>
> >>>>>>>> With the patch, I can run 10s of iterations, with no hang.
> >>>>>>>> Without the patch, it soon hangs, (in disable_nonboot_cpus(), as
> >>>>>>>> always).
> >>>>>>>>
> >>>>>>>> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no problem.
> >>>>>>>> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an
> >>>>>>>> allocation
> >>>>>>>> failure after a couple of iterations ("kthreadd: page allocation
> >>>>>>>> failure. order:1, mode:0xd0").  It looks like it might be the same
> >>>>>>>> stop_machine thread allocation failure that causes the hang.
> >>>>>>>>                 
> >>>>>>> Have you tested it alone or on top of the previous one?  If you've
> >>>>>>> tested it
> >>>>>>> alone, please apply the appended one in addition to it and retest.
> >>>>>>>
> >>>>>>> Rafael
> >>>>>>>               
> >>>>>> I did test with both patches applied together -
> >>>>>>
> >>>>>> 1. [Update] MM / PM: Force GFP_NOIO during suspend/hibernation and
> >>>>>> resume
> >>>>>> 2. "reducing the number of pages that we're going to keep preallocated
> >>>>>> by
> >>>>>> 20%"
> >>>>>>             
> >>>>> In that case you can try to reduce the number of preallocated pages even
> >>>>> more,
> >>>>> ie. change "/ 5" to "/ 2" (for example) in the second patch.
> >>>>>           
> >>>> It still hangs if I try to hibernate a couple of times with too many
> >>>> applications.
> >>>>         
> >>> Hmm.  I guess I asked that before, but is this a 32-bit or 64-bit system and
> >>> how much RAM is there in the box?
> >>>
> >>> Rafael
> >>>       
> >> EeePC 701.  32 bit.  512Mb RAM.  350Mb swap file, on a "first-gen" SSD.
> >>     
> >
> > Hmm.  I'd try to make  free_unnecessary_pages() free all of the preallocated
> > pages and see what happens.
> >   
> 
> It still hangs in hibernation_snapshot() / disable_nonboot_cpus().  
> After apparently freeing over 400Mb / 100,000 pages of preallocated ram.
> 
> 
> 
> There is a change which I missed before.  When I applied your first 
> patch ("Force GFP_NOIO during suspend" etc.), it did change the hung 
> task backtraces a bit.  I don't know if it tells us anything.
> 
> Without the patch, there were two backtraces.  The first backtrace 
> suggested a problem allocating pages for a kernel thread (at 
> copy_process() / try_to_free_pages()).  The second showed that this 
> problem was blocking s2disk (at hibernation_snapshot() / 
> disable_nonboot_cpus() / stop_machine_create()). 
> 
> With the GFP_NOIO patch, I see only the s2disk backtrace.

Can you please post this backtrace?

Rafael

Re: s2disk hang update

[Rafael J. Wysocki]

On Monday 22 February 2010, Alan Jenkins wrote:
> Rafael J. Wysocki wrote:
> > On Friday 19 February 2010, Alan Jenkins wrote:
> >   
> >> On 2/18/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> >>     
> >>> On Thursday 18 February 2010, Alan Jenkins wrote:
> >>>       
> >>>> On 2/17/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> >>>>         
> >>>>> On Wednesday 17 February 2010, Alan Jenkins wrote:
> >>>>>           
> >>>>>> On 2/16/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> >>>>>>             
> >>>>>>> On Tuesday 16 February 2010, Alan Jenkins wrote:
> >>>>>>>               
> >>>>>>>> On 2/16/10, Alan Jenkins <sourcejedi.lkml-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org> wrote:
> >>>>>>>>                 
> >>>>>>>>> On 2/15/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> >>>>>>>>>                   
> >>>>>>>>>> On Tuesday 09 February 2010, Alan Jenkins wrote:
> >>>>>>>>>>                     
> >>>>>>>>>>> Perhaps I spoke too soon.  I see the same hang if I run too many
> >>>>>>>>>>> applications.  The first hibernation fails with "not enough
> >>>>>>>>>>> swap"
> >>>>>>>>>>> as
> >>>>>>>>>>> expected, but the second or third attempt hangs (with the same
> >>>>>>>>>>> backtrace
> >>>>>>>>>>> as before).
> >>>>>>>>>>>
> >>>>>>>>>>> The patch definitely helps though.  Without the patch, I see a
> >>>>>>>>>>> hang
> >>>>>>>>>>> the
> >>>>>>>>>>> first time I try to hibernate with too many applications
> >>>>>>>>>>> running.
> >>>>>>>>>>>                       
> >>>>>>>>>> Well, I have an idea.
> >>>>>>>>>>
> >>>>>>>>>> Can you try to apply the appended patch in addition and see if
> >>>>>>>>>> that
> >>>>>>>>>> helps?
> >>>>>>>>>>
> >>>>>>>>>> Rafael
> >>>>>>>>>>                     
> >>>>>>>>> It doesn't seem to help.
> >>>>>>>>>                   
> >>>>>>>> To be clear: It doesn't stop the hang when I hibernate with too many
> >>>>>>>> applications.
> >>>>>>>>
> >>>>>>>> It does stop the same hang in a different case though.
> >>>>>>>>
> >>>>>>>> 1. boot with init=/bin/bash
> >>>>>>>> 2. run s2disk
> >>>>>>>> 3. cancel the s2disk
> >>>>>>>> 4. repeat steps 2&3
> >>>>>>>>
> >>>>>>>> With the patch, I can run 10s of iterations, with no hang.
> >>>>>>>> Without the patch, it soon hangs, (in disable_nonboot_cpus(), as
> >>>>>>>> always).
> >>>>>>>>
> >>>>>>>> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no problem.
> >>>>>>>> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an
> >>>>>>>> allocation
> >>>>>>>> failure after a couple of iterations ("kthreadd: page allocation
> >>>>>>>> failure. order:1, mode:0xd0").  It looks like it might be the same
> >>>>>>>> stop_machine thread allocation failure that causes the hang.
> >>>>>>>>                 
> >>>>>>> Have you tested it alone or on top of the previous one?  If you've
> >>>>>>> tested it
> >>>>>>> alone, please apply the appended one in addition to it and retest.
> >>>>>>>
> >>>>>>> Rafael
> >>>>>>>               
> >>>>>> I did test with both patches applied together -
> >>>>>>
> >>>>>> 1. [Update] MM / PM: Force GFP_NOIO during suspend/hibernation and
> >>>>>> resume
> >>>>>> 2. "reducing the number of pages that we're going to keep preallocated
> >>>>>> by
> >>>>>> 20%"
> >>>>>>             
> >>>>> In that case you can try to reduce the number of preallocated pages even
> >>>>> more,
> >>>>> ie. change "/ 5" to "/ 2" (for example) in the second patch.
> >>>>>           
> >>>> It still hangs if I try to hibernate a couple of times with too many
> >>>> applications.
> >>>>         
> >>> Hmm.  I guess I asked that before, but is this a 32-bit or 64-bit system and
> >>> how much RAM is there in the box?
> >>>
> >>> Rafael
> >>>       
> >> EeePC 701.  32 bit.  512Mb RAM.  350Mb swap file, on a "first-gen" SSD.
> >>     
> >
> > Hmm.  I'd try to make  free_unnecessary_pages() free all of the preallocated
> > pages and see what happens.
> >   
> 
> It still hangs in hibernation_snapshot() / disable_nonboot_cpus().  
> After apparently freeing over 400Mb / 100,000 pages of preallocated ram.
> 
> 
> 
> There is a change which I missed before.  When I applied your first 
> patch ("Force GFP_NOIO during suspend" etc.), it did change the hung 
> task backtraces a bit.  I don't know if it tells us anything.
> 
> Without the patch, there were two backtraces.  The first backtrace 
> suggested a problem allocating pages for a kernel thread (at 
> copy_process() / try_to_free_pages()).  The second showed that this 
> problem was blocking s2disk (at hibernation_snapshot() / 
> disable_nonboot_cpus() / stop_machine_create()). 
> 
> With the GFP_NOIO patch, I see only the s2disk backtrace.

Can you please post this backtrace?

Rafael

Re: s2disk hang update

[Alan Jenkins]

On 2/22/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> On Monday 22 February 2010, Alan Jenkins wrote:
>> Rafael J. Wysocki wrote:
>> > On Friday 19 February 2010, Alan Jenkins wrote:
>> >
>> >> On 2/18/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> >>
>> >>> On Thursday 18 February 2010, Alan Jenkins wrote:
>> >>>
>> >>>> On 2/17/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> >>>>
>> >>>>> On Wednesday 17 February 2010, Alan Jenkins wrote:
>> >>>>>
>> >>>>>> On 2/16/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> >>>>>>
>> >>>>>>> On Tuesday 16 February 2010, Alan Jenkins wrote:
>> >>>>>>>
>> >>>>>>>> On 2/16/10, Alan Jenkins <sourcejedi.lkml@googlemail.com> wrote:
>> >>>>>>>>
>> >>>>>>>>> On 2/15/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> >>>>>>>>>
>> >>>>>>>>>> On Tuesday 09 February 2010, Alan Jenkins wrote:
>> >>>>>>>>>>
>> >>>>>>>>>>> Perhaps I spoke too soon.  I see the same hang if I run too
>> >>>>>>>>>>> many
>> >>>>>>>>>>> applications.  The first hibernation fails with "not enough
>> >>>>>>>>>>> swap"
>> >>>>>>>>>>> as
>> >>>>>>>>>>> expected, but the second or third attempt hangs (with the same
>> >>>>>>>>>>> backtrace
>> >>>>>>>>>>> as before).
>> >>>>>>>>>>>
>> >>>>>>>>>>> The patch definitely helps though.  Without the patch, I see a
>> >>>>>>>>>>> hang
>> >>>>>>>>>>> the
>> >>>>>>>>>>> first time I try to hibernate with too many applications
>> >>>>>>>>>>> running.
>> >>>>>>>>>>>
>> >>>>>>>>>> Well, I have an idea.
>> >>>>>>>>>>
>> >>>>>>>>>> Can you try to apply the appended patch in addition and see if
>> >>>>>>>>>> that
>> >>>>>>>>>> helps?
>> >>>>>>>>>>
>> >>>>>>>>>> Rafael
>> >>>>>>>>>>
>> >>>>>>>>> It doesn't seem to help.
>> >>>>>>>>>
>> >>>>>>>> To be clear: It doesn't stop the hang when I hibernate with too
>> >>>>>>>> many
>> >>>>>>>> applications.
>> >>>>>>>>
>> >>>>>>>> It does stop the same hang in a different case though.
>> >>>>>>>>
>> >>>>>>>> 1. boot with init=/bin/bash
>> >>>>>>>> 2. run s2disk
>> >>>>>>>> 3. cancel the s2disk
>> >>>>>>>> 4. repeat steps 2&3
>> >>>>>>>>
>> >>>>>>>> With the patch, I can run 10s of iterations, with no hang.
>> >>>>>>>> Without the patch, it soon hangs, (in disable_nonboot_cpus(), as
>> >>>>>>>> always).
>> >>>>>>>>
>> >>>>>>>> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no
>> >>>>>>>> problem.
>> >>>>>>>> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an
>> >>>>>>>> allocation
>> >>>>>>>> failure after a couple of iterations ("kthreadd: page allocation
>> >>>>>>>> failure. order:1, mode:0xd0").  It looks like it might be the
>> >>>>>>>> same
>> >>>>>>>> stop_machine thread allocation failure that causes the hang.
>> >>>>>>>>
>> >>>>>>> Have you tested it alone or on top of the previous one?  If you've
>> >>>>>>> tested it
>> >>>>>>> alone, please apply the appended one in addition to it and retest.
>> >>>>>>>
>> >>>>>>> Rafael
>> >>>>>>>
>> >>>>>> I did test with both patches applied together -
>> >>>>>>
>> >>>>>> 1. [Update] MM / PM: Force GFP_NOIO during suspend/hibernation and
>> >>>>>> resume
>> >>>>>> 2. "reducing the number of pages that we're going to keep
>> >>>>>> preallocated
>> >>>>>> by
>> >>>>>> 20%"
>> >>>>>>
>> >>>>> In that case you can try to reduce the number of preallocated pages
>> >>>>> even
>> >>>>> more,
>> >>>>> ie. change "/ 5" to "/ 2" (for example) in the second patch.
>> >>>>>
>> >>>> It still hangs if I try to hibernate a couple of times with too many
>> >>>> applications.
>> >>>>
>> >>> Hmm.  I guess I asked that before, but is this a 32-bit or 64-bit
>> >>> system and
>> >>> how much RAM is there in the box?
>> >>>
>> >>> Rafael
>> >>>
>> >> EeePC 701.  32 bit.  512Mb RAM.  350Mb swap file, on a "first-gen" SSD.
>> >>
>> >
>> > Hmm.  I'd try to make  free_unnecessary_pages() free all of the
>> > preallocated
>> > pages and see what happens.
>> >
>>
>> It still hangs in hibernation_snapshot() / disable_nonboot_cpus().
>> After apparently freeing over 400Mb / 100,000 pages of preallocated ram.
>>
>>
>>
>> There is a change which I missed before.  When I applied your first
>> patch ("Force GFP_NOIO during suspend" etc.), it did change the hung
>> task backtraces a bit.  I don't know if it tells us anything.
>>
>> Without the patch, there were two backtraces.  The first backtrace
>> suggested a problem allocating pages for a kernel thread (at
>> copy_process() / try_to_free_pages()).  The second showed that this
>> problem was blocking s2disk (at hibernation_snapshot() /
>> disable_nonboot_cpus() / stop_machine_create()).
>>
>> With the GFP_NOIO patch, I see only the s2disk backtrace.
>
> Can you please post this backtrace?

Sure.  It's rather like the one I posted before, except

a) it only shows the one hung task (s2disk)
b) this time I had lockdep enabled
c) this time most of the lines don't have question marks.


Kernel verson:
- mainline v2.6.33-rc8-164-gaea187c, with the one patch "Force GFP_NOIO..."

Image:
http://picasaweb.google.com/lh/photo/f9KRZT2l9wCmVt-Jdggd9g?feat=directlink


INFO: task s2disk:1916 blocked for more than 120 seconds
 ...
 Call Trace:
 ? _raw_spin_unlock
 schedule_timeout+0x22	(timer.c:1366)
 ? mark_held_locks
 ? _raw_spin_unlock_irq
 ? trace_hardirqs_on_caller
 ? trace_hardirqs_on
 wait_for_common+0xb8	(sched.c:5844)
 ? default_wake_function
 wait_for_completion+0x12	(sched.c:5879)
 kthread_create+0x75	(kthread.c:133)
 ? worker_thread+0x0
 create_workqueue_thread+0x38	(workqueue.c:921)
 ? worker_thread+0x0
 __create_workqueue_key+0x156	(workqueue.c:1006)
 stop_machine_create+0x32	(stop_machine.c:121)
 disable_nonboot_cpus+0xe	(cpu.c:370)
 hibernation_snapshot+0x94	(hibernate.c:266)
 snapshot_ioctl+0x21b	(user.c:256)
 ...
 sys_ioctl+0x41 (ioctl.c:624)


Thanks
Alan

Re: s2disk hang update

[Alan Jenkins]

On 2/22/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> On Monday 22 February 2010, Alan Jenkins wrote:
>> Rafael J. Wysocki wrote:
>> > On Friday 19 February 2010, Alan Jenkins wrote:
>> >
>> >> On 2/18/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
>> >>
>> >>> On Thursday 18 February 2010, Alan Jenkins wrote:
>> >>>
>> >>>> On 2/17/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
>> >>>>
>> >>>>> On Wednesday 17 February 2010, Alan Jenkins wrote:
>> >>>>>
>> >>>>>> On 2/16/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
>> >>>>>>
>> >>>>>>> On Tuesday 16 February 2010, Alan Jenkins wrote:
>> >>>>>>>
>> >>>>>>>> On 2/16/10, Alan Jenkins <sourcejedi.lkml-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org> wrote:
>> >>>>>>>>
>> >>>>>>>>> On 2/15/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
>> >>>>>>>>>
>> >>>>>>>>>> On Tuesday 09 February 2010, Alan Jenkins wrote:
>> >>>>>>>>>>
>> >>>>>>>>>>> Perhaps I spoke too soon.  I see the same hang if I run too
>> >>>>>>>>>>> many
>> >>>>>>>>>>> applications.  The first hibernation fails with "not enough
>> >>>>>>>>>>> swap"
>> >>>>>>>>>>> as
>> >>>>>>>>>>> expected, but the second or third attempt hangs (with the same
>> >>>>>>>>>>> backtrace
>> >>>>>>>>>>> as before).
>> >>>>>>>>>>>
>> >>>>>>>>>>> The patch definitely helps though.  Without the patch, I see a
>> >>>>>>>>>>> hang
>> >>>>>>>>>>> the
>> >>>>>>>>>>> first time I try to hibernate with too many applications
>> >>>>>>>>>>> running.
>> >>>>>>>>>>>
>> >>>>>>>>>> Well, I have an idea.
>> >>>>>>>>>>
>> >>>>>>>>>> Can you try to apply the appended patch in addition and see if
>> >>>>>>>>>> that
>> >>>>>>>>>> helps?
>> >>>>>>>>>>
>> >>>>>>>>>> Rafael
>> >>>>>>>>>>
>> >>>>>>>>> It doesn't seem to help.
>> >>>>>>>>>
>> >>>>>>>> To be clear: It doesn't stop the hang when I hibernate with too
>> >>>>>>>> many
>> >>>>>>>> applications.
>> >>>>>>>>
>> >>>>>>>> It does stop the same hang in a different case though.
>> >>>>>>>>
>> >>>>>>>> 1. boot with init=/bin/bash
>> >>>>>>>> 2. run s2disk
>> >>>>>>>> 3. cancel the s2disk
>> >>>>>>>> 4. repeat steps 2&3
>> >>>>>>>>
>> >>>>>>>> With the patch, I can run 10s of iterations, with no hang.
>> >>>>>>>> Without the patch, it soon hangs, (in disable_nonboot_cpus(), as
>> >>>>>>>> always).
>> >>>>>>>>
>> >>>>>>>> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no
>> >>>>>>>> problem.
>> >>>>>>>> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an
>> >>>>>>>> allocation
>> >>>>>>>> failure after a couple of iterations ("kthreadd: page allocation
>> >>>>>>>> failure. order:1, mode:0xd0").  It looks like it might be the
>> >>>>>>>> same
>> >>>>>>>> stop_machine thread allocation failure that causes the hang.
>> >>>>>>>>
>> >>>>>>> Have you tested it alone or on top of the previous one?  If you've
>> >>>>>>> tested it
>> >>>>>>> alone, please apply the appended one in addition to it and retest.
>> >>>>>>>
>> >>>>>>> Rafael
>> >>>>>>>
>> >>>>>> I did test with both patches applied together -
>> >>>>>>
>> >>>>>> 1. [Update] MM / PM: Force GFP_NOIO during suspend/hibernation and
>> >>>>>> resume
>> >>>>>> 2. "reducing the number of pages that we're going to keep
>> >>>>>> preallocated
>> >>>>>> by
>> >>>>>> 20%"
>> >>>>>>
>> >>>>> In that case you can try to reduce the number of preallocated pages
>> >>>>> even
>> >>>>> more,
>> >>>>> ie. change "/ 5" to "/ 2" (for example) in the second patch.
>> >>>>>
>> >>>> It still hangs if I try to hibernate a couple of times with too many
>> >>>> applications.
>> >>>>
>> >>> Hmm.  I guess I asked that before, but is this a 32-bit or 64-bit
>> >>> system and
>> >>> how much RAM is there in the box?
>> >>>
>> >>> Rafael
>> >>>
>> >> EeePC 701.  32 bit.  512Mb RAM.  350Mb swap file, on a "first-gen" SSD.
>> >>
>> >
>> > Hmm.  I'd try to make  free_unnecessary_pages() free all of the
>> > preallocated
>> > pages and see what happens.
>> >
>>
>> It still hangs in hibernation_snapshot() / disable_nonboot_cpus().
>> After apparently freeing over 400Mb / 100,000 pages of preallocated ram.
>>
>>
>>
>> There is a change which I missed before.  When I applied your first
>> patch ("Force GFP_NOIO during suspend" etc.), it did change the hung
>> task backtraces a bit.  I don't know if it tells us anything.
>>
>> Without the patch, there were two backtraces.  The first backtrace
>> suggested a problem allocating pages for a kernel thread (at
>> copy_process() / try_to_free_pages()).  The second showed that this
>> problem was blocking s2disk (at hibernation_snapshot() /
>> disable_nonboot_cpus() / stop_machine_create()).
>>
>> With the GFP_NOIO patch, I see only the s2disk backtrace.
>
> Can you please post this backtrace?

Sure.  It's rather like the one I posted before, except

a) it only shows the one hung task (s2disk)
b) this time I had lockdep enabled
c) this time most of the lines don't have question marks.


Kernel verson:
- mainline v2.6.33-rc8-164-gaea187c, with the one patch "Force GFP_NOIO..."

Image:
http://picasaweb.google.com/lh/photo/f9KRZT2l9wCmVt-Jdggd9g?feat=directlink


INFO: task s2disk:1916 blocked for more than 120 seconds
 ...
 Call Trace:
 ? _raw_spin_unlock
 schedule_timeout+0x22	(timer.c:1366)
 ? mark_held_locks
 ? _raw_spin_unlock_irq
 ? trace_hardirqs_on_caller
 ? trace_hardirqs_on
 wait_for_common+0xb8	(sched.c:5844)
 ? default_wake_function
 wait_for_completion+0x12	(sched.c:5879)
 kthread_create+0x75	(kthread.c:133)
 ? worker_thread+0x0
 create_workqueue_thread+0x38	(workqueue.c:921)
 ? worker_thread+0x0
 __create_workqueue_key+0x156	(workqueue.c:1006)
 stop_machine_create+0x32	(stop_machine.c:121)
 disable_nonboot_cpus+0xe	(cpu.c:370)
 hibernation_snapshot+0x94	(hibernate.c:266)
 snapshot_ioctl+0x21b	(user.c:256)
 ...
 sys_ioctl+0x41 (ioctl.c:624)


Thanks
Alan

Re: s2disk hang update

[Rafael J. Wysocki]

On Tuesday 23 February 2010, Alan Jenkins wrote:
> On 2/22/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> > On Monday 22 February 2010, Alan Jenkins wrote:
> >> Rafael J. Wysocki wrote:
> >> > On Friday 19 February 2010, Alan Jenkins wrote:
> >> >
> >> >> On 2/18/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >> >>
> >> >>> On Thursday 18 February 2010, Alan Jenkins wrote:
> >> >>>
> >> >>>> On 2/17/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >> >>>>
> >> >>>>> On Wednesday 17 February 2010, Alan Jenkins wrote:
> >> >>>>>
> >> >>>>>> On 2/16/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >> >>>>>>
> >> >>>>>>> On Tuesday 16 February 2010, Alan Jenkins wrote:
> >> >>>>>>>
> >> >>>>>>>> On 2/16/10, Alan Jenkins <sourcejedi.lkml@googlemail.com> wrote:
> >> >>>>>>>>
> >> >>>>>>>>> On 2/15/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >> >>>>>>>>>
> >> >>>>>>>>>> On Tuesday 09 February 2010, Alan Jenkins wrote:
> >> >>>>>>>>>>
> >> >>>>>>>>>>> Perhaps I spoke too soon.  I see the same hang if I run too
> >> >>>>>>>>>>> many
> >> >>>>>>>>>>> applications.  The first hibernation fails with "not enough
> >> >>>>>>>>>>> swap"
> >> >>>>>>>>>>> as
> >> >>>>>>>>>>> expected, but the second or third attempt hangs (with the same
> >> >>>>>>>>>>> backtrace
> >> >>>>>>>>>>> as before).
> >> >>>>>>>>>>>
> >> >>>>>>>>>>> The patch definitely helps though.  Without the patch, I see a
> >> >>>>>>>>>>> hang
> >> >>>>>>>>>>> the
> >> >>>>>>>>>>> first time I try to hibernate with too many applications
> >> >>>>>>>>>>> running.
> >> >>>>>>>>>>>
> >> >>>>>>>>>> Well, I have an idea.
> >> >>>>>>>>>>
> >> >>>>>>>>>> Can you try to apply the appended patch in addition and see if
> >> >>>>>>>>>> that
> >> >>>>>>>>>> helps?
> >> >>>>>>>>>>
> >> >>>>>>>>>> Rafael
> >> >>>>>>>>>>
> >> >>>>>>>>> It doesn't seem to help.
> >> >>>>>>>>>
> >> >>>>>>>> To be clear: It doesn't stop the hang when I hibernate with too
> >> >>>>>>>> many
> >> >>>>>>>> applications.
> >> >>>>>>>>
> >> >>>>>>>> It does stop the same hang in a different case though.
> >> >>>>>>>>
> >> >>>>>>>> 1. boot with init=/bin/bash
> >> >>>>>>>> 2. run s2disk
> >> >>>>>>>> 3. cancel the s2disk
> >> >>>>>>>> 4. repeat steps 2&3
> >> >>>>>>>>
> >> >>>>>>>> With the patch, I can run 10s of iterations, with no hang.
> >> >>>>>>>> Without the patch, it soon hangs, (in disable_nonboot_cpus(), as
> >> >>>>>>>> always).
> >> >>>>>>>>
> >> >>>>>>>> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no
> >> >>>>>>>> problem.
> >> >>>>>>>> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an
> >> >>>>>>>> allocation
> >> >>>>>>>> failure after a couple of iterations ("kthreadd: page allocation
> >> >>>>>>>> failure. order:1, mode:0xd0").  It looks like it might be the
> >> >>>>>>>> same
> >> >>>>>>>> stop_machine thread allocation failure that causes the hang.
> >> >>>>>>>>
> >> >>>>>>> Have you tested it alone or on top of the previous one?  If you've
> >> >>>>>>> tested it
> >> >>>>>>> alone, please apply the appended one in addition to it and retest.
> >> >>>>>>>
> >> >>>>>>> Rafael
> >> >>>>>>>
> >> >>>>>> I did test with both patches applied together -
> >> >>>>>>
> >> >>>>>> 1. [Update] MM / PM: Force GFP_NOIO during suspend/hibernation and
> >> >>>>>> resume
> >> >>>>>> 2. "reducing the number of pages that we're going to keep
> >> >>>>>> preallocated
> >> >>>>>> by
> >> >>>>>> 20%"
> >> >>>>>>
> >> >>>>> In that case you can try to reduce the number of preallocated pages
> >> >>>>> even
> >> >>>>> more,
> >> >>>>> ie. change "/ 5" to "/ 2" (for example) in the second patch.
> >> >>>>>
> >> >>>> It still hangs if I try to hibernate a couple of times with too many
> >> >>>> applications.
> >> >>>>
> >> >>> Hmm.  I guess I asked that before, but is this a 32-bit or 64-bit
> >> >>> system and
> >> >>> how much RAM is there in the box?
> >> >>>
> >> >>> Rafael
> >> >>>
> >> >> EeePC 701.  32 bit.  512Mb RAM.  350Mb swap file, on a "first-gen" SSD.
> >> >>
> >> >
> >> > Hmm.  I'd try to make  free_unnecessary_pages() free all of the
> >> > preallocated
> >> > pages and see what happens.
> >> >
> >>
> >> It still hangs in hibernation_snapshot() / disable_nonboot_cpus().
> >> After apparently freeing over 400Mb / 100,000 pages of preallocated ram.
> >>
> >>
> >>
> >> There is a change which I missed before.  When I applied your first
> >> patch ("Force GFP_NOIO during suspend" etc.), it did change the hung
> >> task backtraces a bit.  I don't know if it tells us anything.
> >>
> >> Without the patch, there were two backtraces.  The first backtrace
> >> suggested a problem allocating pages for a kernel thread (at
> >> copy_process() / try_to_free_pages()).  The second showed that this
> >> problem was blocking s2disk (at hibernation_snapshot() /
> >> disable_nonboot_cpus() / stop_machine_create()).
> >>
> >> With the GFP_NOIO patch, I see only the s2disk backtrace.
> >
> > Can you please post this backtrace?
> 
> Sure.  It's rather like the one I posted before, except
> 
> a) it only shows the one hung task (s2disk)
> b) this time I had lockdep enabled
> c) this time most of the lines don't have question marks.

Well, it still looks like we're waiting for create_workqueue_thread() to
return, which probably is trying to allocate memory for the thread
structure.

My guess is that the preallocated memory pages freed by
free_unnecessary_pages() go into a place from where they cannot be taken for
subsequent NOIO allocations.  I have no idea why that happens though.

To test that theory you can try to change GFP_IOFS to GFP_KERNEL in the
calls to clear_gfp_allowed_mask() in kernel/power/hibernate.c (and in
kernel/power/suspend.c for completness).

Rafael

Re: s2disk hang update

[Rafael J. Wysocki]

On Tuesday 23 February 2010, Alan Jenkins wrote:
> On 2/22/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> > On Monday 22 February 2010, Alan Jenkins wrote:
> >> Rafael J. Wysocki wrote:
> >> > On Friday 19 February 2010, Alan Jenkins wrote:
> >> >
> >> >> On 2/18/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >> >>
> >> >>> On Thursday 18 February 2010, Alan Jenkins wrote:
> >> >>>
> >> >>>> On 2/17/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >> >>>>
> >> >>>>> On Wednesday 17 February 2010, Alan Jenkins wrote:
> >> >>>>>
> >> >>>>>> On 2/16/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >> >>>>>>
> >> >>>>>>> On Tuesday 16 February 2010, Alan Jenkins wrote:
> >> >>>>>>>
> >> >>>>>>>> On 2/16/10, Alan Jenkins <sourcejedi.lkml@googlemail.com> wrote:
> >> >>>>>>>>
> >> >>>>>>>>> On 2/15/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >> >>>>>>>>>
> >> >>>>>>>>>> On Tuesday 09 February 2010, Alan Jenkins wrote:
> >> >>>>>>>>>>
> >> >>>>>>>>>>> Perhaps I spoke too soon.  I see the same hang if I run too
> >> >>>>>>>>>>> many
> >> >>>>>>>>>>> applications.  The first hibernation fails with "not enough
> >> >>>>>>>>>>> swap"
> >> >>>>>>>>>>> as
> >> >>>>>>>>>>> expected, but the second or third attempt hangs (with the same
> >> >>>>>>>>>>> backtrace
> >> >>>>>>>>>>> as before).
> >> >>>>>>>>>>>
> >> >>>>>>>>>>> The patch definitely helps though.  Without the patch, I see a
> >> >>>>>>>>>>> hang
> >> >>>>>>>>>>> the
> >> >>>>>>>>>>> first time I try to hibernate with too many applications
> >> >>>>>>>>>>> running.
> >> >>>>>>>>>>>
> >> >>>>>>>>>> Well, I have an idea.
> >> >>>>>>>>>>
> >> >>>>>>>>>> Can you try to apply the appended patch in addition and see if
> >> >>>>>>>>>> that
> >> >>>>>>>>>> helps?
> >> >>>>>>>>>>
> >> >>>>>>>>>> Rafael
> >> >>>>>>>>>>
> >> >>>>>>>>> It doesn't seem to help.
> >> >>>>>>>>>
> >> >>>>>>>> To be clear: It doesn't stop the hang when I hibernate with too
> >> >>>>>>>> many
> >> >>>>>>>> applications.
> >> >>>>>>>>
> >> >>>>>>>> It does stop the same hang in a different case though.
> >> >>>>>>>>
> >> >>>>>>>> 1. boot with init=/bin/bash
> >> >>>>>>>> 2. run s2disk
> >> >>>>>>>> 3. cancel the s2disk
> >> >>>>>>>> 4. repeat steps 2&3
> >> >>>>>>>>
> >> >>>>>>>> With the patch, I can run 10s of iterations, with no hang.
> >> >>>>>>>> Without the patch, it soon hangs, (in disable_nonboot_cpus(), as
> >> >>>>>>>> always).
> >> >>>>>>>>
> >> >>>>>>>> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no
> >> >>>>>>>> problem.
> >> >>>>>>>> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an
> >> >>>>>>>> allocation
> >> >>>>>>>> failure after a couple of iterations ("kthreadd: page allocation
> >> >>>>>>>> failure. order:1, mode:0xd0").  It looks like it might be the
> >> >>>>>>>> same
> >> >>>>>>>> stop_machine thread allocation failure that causes the hang.
> >> >>>>>>>>
> >> >>>>>>> Have you tested it alone or on top of the previous one?  If you've
> >> >>>>>>> tested it
> >> >>>>>>> alone, please apply the appended one in addition to it and retest.
> >> >>>>>>>
> >> >>>>>>> Rafael
> >> >>>>>>>
> >> >>>>>> I did test with both patches applied together -
> >> >>>>>>
> >> >>>>>> 1. [Update] MM / PM: Force GFP_NOIO during suspend/hibernation and
> >> >>>>>> resume
> >> >>>>>> 2. "reducing the number of pages that we're going to keep
> >> >>>>>> preallocated
> >> >>>>>> by
> >> >>>>>> 20%"
> >> >>>>>>
> >> >>>>> In that case you can try to reduce the number of preallocated pages
> >> >>>>> even
> >> >>>>> more,
> >> >>>>> ie. change "/ 5" to "/ 2" (for example) in the second patch.
> >> >>>>>
> >> >>>> It still hangs if I try to hibernate a couple of times with too many
> >> >>>> applications.
> >> >>>>
> >> >>> Hmm.  I guess I asked that before, but is this a 32-bit or 64-bit
> >> >>> system and
> >> >>> how much RAM is there in the box?
> >> >>>
> >> >>> Rafael
> >> >>>
> >> >> EeePC 701.  32 bit.  512Mb RAM.  350Mb swap file, on a "first-gen" SSD.
> >> >>
> >> >
> >> > Hmm.  I'd try to make  free_unnecessary_pages() free all of the
> >> > preallocated
> >> > pages and see what happens.
> >> >
> >>
> >> It still hangs in hibernation_snapshot() / disable_nonboot_cpus().
> >> After apparently freeing over 400Mb / 100,000 pages of preallocated ram.
> >>
> >>
> >>
> >> There is a change which I missed before.  When I applied your first
> >> patch ("Force GFP_NOIO during suspend" etc.), it did change the hung
> >> task backtraces a bit.  I don't know if it tells us anything.
> >>
> >> Without the patch, there were two backtraces.  The first backtrace
> >> suggested a problem allocating pages for a kernel thread (at
> >> copy_process() / try_to_free_pages()).  The second showed that this
> >> problem was blocking s2disk (at hibernation_snapshot() /
> >> disable_nonboot_cpus() / stop_machine_create()).
> >>
> >> With the GFP_NOIO patch, I see only the s2disk backtrace.
> >
> > Can you please post this backtrace?
> 
> Sure.  It's rather like the one I posted before, except
> 
> a) it only shows the one hung task (s2disk)
> b) this time I had lockdep enabled
> c) this time most of the lines don't have question marks.

Well, it still looks like we're waiting for create_workqueue_thread() to
return, which probably is trying to allocate memory for the thread
structure.

My guess is that the preallocated memory pages freed by
free_unnecessary_pages() go into a place from where they cannot be taken for
subsequent NOIO allocations.  I have no idea why that happens though.

To test that theory you can try to change GFP_IOFS to GFP_KERNEL in the
calls to clear_gfp_allowed_mask() in kernel/power/hibernate.c (and in
kernel/power/suspend.c for completness).

Rafael

Re: s2disk hang update

[Rafael J. Wysocki]

On Tuesday 23 February 2010, Alan Jenkins wrote:
> On 2/22/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> > On Monday 22 February 2010, Alan Jenkins wrote:
> >> Rafael J. Wysocki wrote:
> >> > On Friday 19 February 2010, Alan Jenkins wrote:
> >> >
> >> >> On 2/18/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> >> >>
> >> >>> On Thursday 18 February 2010, Alan Jenkins wrote:
> >> >>>
> >> >>>> On 2/17/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> >> >>>>
> >> >>>>> On Wednesday 17 February 2010, Alan Jenkins wrote:
> >> >>>>>
> >> >>>>>> On 2/16/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> >> >>>>>>
> >> >>>>>>> On Tuesday 16 February 2010, Alan Jenkins wrote:
> >> >>>>>>>
> >> >>>>>>>> On 2/16/10, Alan Jenkins <sourcejedi.lkml-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org> wrote:
> >> >>>>>>>>
> >> >>>>>>>>> On 2/15/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> >> >>>>>>>>>
> >> >>>>>>>>>> On Tuesday 09 February 2010, Alan Jenkins wrote:
> >> >>>>>>>>>>
> >> >>>>>>>>>>> Perhaps I spoke too soon.  I see the same hang if I run too
> >> >>>>>>>>>>> many
> >> >>>>>>>>>>> applications.  The first hibernation fails with "not enough
> >> >>>>>>>>>>> swap"
> >> >>>>>>>>>>> as
> >> >>>>>>>>>>> expected, but the second or third attempt hangs (with the same
> >> >>>>>>>>>>> backtrace
> >> >>>>>>>>>>> as before).
> >> >>>>>>>>>>>
> >> >>>>>>>>>>> The patch definitely helps though.  Without the patch, I see a
> >> >>>>>>>>>>> hang
> >> >>>>>>>>>>> the
> >> >>>>>>>>>>> first time I try to hibernate with too many applications
> >> >>>>>>>>>>> running.
> >> >>>>>>>>>>>
> >> >>>>>>>>>> Well, I have an idea.
> >> >>>>>>>>>>
> >> >>>>>>>>>> Can you try to apply the appended patch in addition and see if
> >> >>>>>>>>>> that
> >> >>>>>>>>>> helps?
> >> >>>>>>>>>>
> >> >>>>>>>>>> Rafael
> >> >>>>>>>>>>
> >> >>>>>>>>> It doesn't seem to help.
> >> >>>>>>>>>
> >> >>>>>>>> To be clear: It doesn't stop the hang when I hibernate with too
> >> >>>>>>>> many
> >> >>>>>>>> applications.
> >> >>>>>>>>
> >> >>>>>>>> It does stop the same hang in a different case though.
> >> >>>>>>>>
> >> >>>>>>>> 1. boot with init=/bin/bash
> >> >>>>>>>> 2. run s2disk
> >> >>>>>>>> 3. cancel the s2disk
> >> >>>>>>>> 4. repeat steps 2&3
> >> >>>>>>>>
> >> >>>>>>>> With the patch, I can run 10s of iterations, with no hang.
> >> >>>>>>>> Without the patch, it soon hangs, (in disable_nonboot_cpus(), as
> >> >>>>>>>> always).
> >> >>>>>>>>
> >> >>>>>>>> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no
> >> >>>>>>>> problem.
> >> >>>>>>>> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an
> >> >>>>>>>> allocation
> >> >>>>>>>> failure after a couple of iterations ("kthreadd: page allocation
> >> >>>>>>>> failure. order:1, mode:0xd0").  It looks like it might be the
> >> >>>>>>>> same
> >> >>>>>>>> stop_machine thread allocation failure that causes the hang.
> >> >>>>>>>>
> >> >>>>>>> Have you tested it alone or on top of the previous one?  If you've
> >> >>>>>>> tested it
> >> >>>>>>> alone, please apply the appended one in addition to it and retest.
> >> >>>>>>>
> >> >>>>>>> Rafael
> >> >>>>>>>
> >> >>>>>> I did test with both patches applied together -
> >> >>>>>>
> >> >>>>>> 1. [Update] MM / PM: Force GFP_NOIO during suspend/hibernation and
> >> >>>>>> resume
> >> >>>>>> 2. "reducing the number of pages that we're going to keep
> >> >>>>>> preallocated
> >> >>>>>> by
> >> >>>>>> 20%"
> >> >>>>>>
> >> >>>>> In that case you can try to reduce the number of preallocated pages
> >> >>>>> even
> >> >>>>> more,
> >> >>>>> ie. change "/ 5" to "/ 2" (for example) in the second patch.
> >> >>>>>
> >> >>>> It still hangs if I try to hibernate a couple of times with too many
> >> >>>> applications.
> >> >>>>
> >> >>> Hmm.  I guess I asked that before, but is this a 32-bit or 64-bit
> >> >>> system and
> >> >>> how much RAM is there in the box?
> >> >>>
> >> >>> Rafael
> >> >>>
> >> >> EeePC 701.  32 bit.  512Mb RAM.  350Mb swap file, on a "first-gen" SSD.
> >> >>
> >> >
> >> > Hmm.  I'd try to make  free_unnecessary_pages() free all of the
> >> > preallocated
> >> > pages and see what happens.
> >> >
> >>
> >> It still hangs in hibernation_snapshot() / disable_nonboot_cpus().
> >> After apparently freeing over 400Mb / 100,000 pages of preallocated ram.
> >>
> >>
> >>
> >> There is a change which I missed before.  When I applied your first
> >> patch ("Force GFP_NOIO during suspend" etc.), it did change the hung
> >> task backtraces a bit.  I don't know if it tells us anything.
> >>
> >> Without the patch, there were two backtraces.  The first backtrace
> >> suggested a problem allocating pages for a kernel thread (at
> >> copy_process() / try_to_free_pages()).  The second showed that this
> >> problem was blocking s2disk (at hibernation_snapshot() /
> >> disable_nonboot_cpus() / stop_machine_create()).
> >>
> >> With the GFP_NOIO patch, I see only the s2disk backtrace.
> >
> > Can you please post this backtrace?
> 
> Sure.  It's rather like the one I posted before, except
> 
> a) it only shows the one hung task (s2disk)
> b) this time I had lockdep enabled
> c) this time most of the lines don't have question marks.

Well, it still looks like we're waiting for create_workqueue_thread() to
return, which probably is trying to allocate memory for the thread
structure.

My guess is that the preallocated memory pages freed by
free_unnecessary_pages() go into a place from where they cannot be taken for
subsequent NOIO allocations.  I have no idea why that happens though.

To test that theory you can try to change GFP_IOFS to GFP_KERNEL in the
calls to clear_gfp_allowed_mask() in kernel/power/hibernate.c (and in
kernel/power/suspend.c for completness).

Rafael

Re: s2disk hang update

[Rafael J. Wysocki]

On Tuesday 23 February 2010, Alan Jenkins wrote:
> On 2/22/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> > On Monday 22 February 2010, Alan Jenkins wrote:
> >> Rafael J. Wysocki wrote:
> >> > On Friday 19 February 2010, Alan Jenkins wrote:
> >> >
> >> >> On 2/18/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >> >>
> >> >>> On Thursday 18 February 2010, Alan Jenkins wrote:
> >> >>>
> >> >>>> On 2/17/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >> >>>>
> >> >>>>> On Wednesday 17 February 2010, Alan Jenkins wrote:
> >> >>>>>
> >> >>>>>> On 2/16/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >> >>>>>>
> >> >>>>>>> On Tuesday 16 February 2010, Alan Jenkins wrote:
> >> >>>>>>>
> >> >>>>>>>> On 2/16/10, Alan Jenkins <sourcejedi.lkml@googlemail.com> wrote:
> >> >>>>>>>>
> >> >>>>>>>>> On 2/15/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >> >>>>>>>>>
> >> >>>>>>>>>> On Tuesday 09 February 2010, Alan Jenkins wrote:
> >> >>>>>>>>>>
> >> >>>>>>>>>>> Perhaps I spoke too soon.  I see the same hang if I run too
> >> >>>>>>>>>>> many
> >> >>>>>>>>>>> applications.  The first hibernation fails with "not enough
> >> >>>>>>>>>>> swap"
> >> >>>>>>>>>>> as
> >> >>>>>>>>>>> expected, but the second or third attempt hangs (with the same
> >> >>>>>>>>>>> backtrace
> >> >>>>>>>>>>> as before).
> >> >>>>>>>>>>>
> >> >>>>>>>>>>> The patch definitely helps though.  Without the patch, I see a
> >> >>>>>>>>>>> hang
> >> >>>>>>>>>>> the
> >> >>>>>>>>>>> first time I try to hibernate with too many applications
> >> >>>>>>>>>>> running.
> >> >>>>>>>>>>>
> >> >>>>>>>>>> Well, I have an idea.
> >> >>>>>>>>>>
> >> >>>>>>>>>> Can you try to apply the appended patch in addition and see if
> >> >>>>>>>>>> that
> >> >>>>>>>>>> helps?
> >> >>>>>>>>>>
> >> >>>>>>>>>> Rafael
> >> >>>>>>>>>>
> >> >>>>>>>>> It doesn't seem to help.
> >> >>>>>>>>>
> >> >>>>>>>> To be clear: It doesn't stop the hang when I hibernate with too
> >> >>>>>>>> many
> >> >>>>>>>> applications.
> >> >>>>>>>>
> >> >>>>>>>> It does stop the same hang in a different case though.
> >> >>>>>>>>
> >> >>>>>>>> 1. boot with init=/bin/bash
> >> >>>>>>>> 2. run s2disk
> >> >>>>>>>> 3. cancel the s2disk
> >> >>>>>>>> 4. repeat steps 2&3
> >> >>>>>>>>
> >> >>>>>>>> With the patch, I can run 10s of iterations, with no hang.
> >> >>>>>>>> Without the patch, it soon hangs, (in disable_nonboot_cpus(), as
> >> >>>>>>>> always).
> >> >>>>>>>>
> >> >>>>>>>> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no
> >> >>>>>>>> problem.
> >> >>>>>>>> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an
> >> >>>>>>>> allocation
> >> >>>>>>>> failure after a couple of iterations ("kthreadd: page allocation
> >> >>>>>>>> failure. order:1, mode:0xd0").  It looks like it might be the
> >> >>>>>>>> same
> >> >>>>>>>> stop_machine thread allocation failure that causes the hang.
> >> >>>>>>>>
> >> >>>>>>> Have you tested it alone or on top of the previous one?  If you've
> >> >>>>>>> tested it
> >> >>>>>>> alone, please apply the appended one in addition to it and retest.
> >> >>>>>>>
> >> >>>>>>> Rafael
> >> >>>>>>>
> >> >>>>>> I did test with both patches applied together -
> >> >>>>>>
> >> >>>>>> 1. [Update] MM / PM: Force GFP_NOIO during suspend/hibernation and
> >> >>>>>> resume
> >> >>>>>> 2. "reducing the number of pages that we're going to keep
> >> >>>>>> preallocated
> >> >>>>>> by
> >> >>>>>> 20%"
> >> >>>>>>
> >> >>>>> In that case you can try to reduce the number of preallocated pages
> >> >>>>> even
> >> >>>>> more,
> >> >>>>> ie. change "/ 5" to "/ 2" (for example) in the second patch.
> >> >>>>>
> >> >>>> It still hangs if I try to hibernate a couple of times with too many
> >> >>>> applications.
> >> >>>>
> >> >>> Hmm.  I guess I asked that before, but is this a 32-bit or 64-bit
> >> >>> system and
> >> >>> how much RAM is there in the box?
> >> >>>
> >> >>> Rafael
> >> >>>
> >> >> EeePC 701.  32 bit.  512Mb RAM.  350Mb swap file, on a "first-gen" SSD.
> >> >>
> >> >
> >> > Hmm.  I'd try to make  free_unnecessary_pages() free all of the
> >> > preallocated
> >> > pages and see what happens.
> >> >
> >>
> >> It still hangs in hibernation_snapshot() / disable_nonboot_cpus().
> >> After apparently freeing over 400Mb / 100,000 pages of preallocated ram.
> >>
> >>
> >>
> >> There is a change which I missed before.  When I applied your first
> >> patch ("Force GFP_NOIO during suspend" etc.), it did change the hung
> >> task backtraces a bit.  I don't know if it tells us anything.
> >>
> >> Without the patch, there were two backtraces.  The first backtrace
> >> suggested a problem allocating pages for a kernel thread (at
> >> copy_process() / try_to_free_pages()).  The second showed that this
> >> problem was blocking s2disk (at hibernation_snapshot() /
> >> disable_nonboot_cpus() / stop_machine_create()).
> >>
> >> With the GFP_NOIO patch, I see only the s2disk backtrace.
> >
> > Can you please post this backtrace?
> 
> Sure.  It's rather like the one I posted before, except
> 
> a) it only shows the one hung task (s2disk)
> b) this time I had lockdep enabled
> c) this time most of the lines don't have question marks.

Well, it still looks like we're waiting for create_workqueue_thread() to
return, which probably is trying to allocate memory for the thread
structure.

My guess is that the preallocated memory pages freed by
free_unnecessary_pages() go into a place from where they cannot be taken for
subsequent NOIO allocations.  I have no idea why that happens though.

To test that theory you can try to change GFP_IOFS to GFP_KERNEL in the
calls to clear_gfp_allowed_mask() in kernel/power/hibernate.c (and in
kernel/power/suspend.c for completness).

Rafael

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Re: s2disk hang update

[KAMEZAWA Hiroyuki]

On Tue, 23 Feb 2010 22:13:56 +0100
"Rafael J. Wysocki" <rjw@sisk.pl> wrote:

> Well, it still looks like we're waiting for create_workqueue_thread() to
> return, which probably is trying to allocate memory for the thread
> structure.
> 
> My guess is that the preallocated memory pages freed by
> free_unnecessary_pages() go into a place from where they cannot be taken for
> subsequent NOIO allocations.  I have no idea why that happens though.
> 
> To test that theory you can try to change GFP_IOFS to GFP_KERNEL in the
> calls to clear_gfp_allowed_mask() in kernel/power/hibernate.c (and in
> kernel/power/suspend.c for completness).
> 

If allocation of kernel threads for stop_machine_run() is the problem,

What happens when
1. use CONIFG_4KSTACK
or
2. make use of stop_machine_create(), stop_machine_destroy().
   A new interface added by this commit.
  http://git.kernel.org/?p=linux/kernel/git/torvalds/  linux-2.6.git;a=commit;h=9ea09af3bd3090e8349ca2899ca2011bd94cda85
   You can do no-fail stop_machine_run().

Thanks,
-Kame

Re: s2disk hang update

[KAMEZAWA Hiroyuki]

On Tue, 23 Feb 2010 22:13:56 +0100
"Rafael J. Wysocki" <rjw@sisk.pl> wrote:

> Well, it still looks like we're waiting for create_workqueue_thread() to
> return, which probably is trying to allocate memory for the thread
> structure.
> 
> My guess is that the preallocated memory pages freed by
> free_unnecessary_pages() go into a place from where they cannot be taken for
> subsequent NOIO allocations.  I have no idea why that happens though.
> 
> To test that theory you can try to change GFP_IOFS to GFP_KERNEL in the
> calls to clear_gfp_allowed_mask() in kernel/power/hibernate.c (and in
> kernel/power/suspend.c for completness).
> 

If allocation of kernel threads for stop_machine_run() is the problem,

What happens when
1. use CONIFG_4KSTACK
or
2. make use of stop_machine_create(), stop_machine_destroy().
   A new interface added by this commit.
  http://git.kernel.org/?p=linux/kernel/git/torvalds/  linux-2.6.git;a=commit;h=9ea09af3bd3090e8349ca2899ca2011bd94cda85
   You can do no-fail stop_machine_run().

Thanks,
-Kame

Re: s2disk hang update

[KAMEZAWA Hiroyuki]

On Tue, 23 Feb 2010 22:13:56 +0100
"Rafael J. Wysocki" <rjw-KKrjLPT3xs0@public.gmane.org> wrote:

> Well, it still looks like we're waiting for create_workqueue_thread() to
> return, which probably is trying to allocate memory for the thread
> structure.
> 
> My guess is that the preallocated memory pages freed by
> free_unnecessary_pages() go into a place from where they cannot be taken for
> subsequent NOIO allocations.  I have no idea why that happens though.
> 
> To test that theory you can try to change GFP_IOFS to GFP_KERNEL in the
> calls to clear_gfp_allowed_mask() in kernel/power/hibernate.c (and in
> kernel/power/suspend.c for completness).
> 

If allocation of kernel threads for stop_machine_run() is the problem,

What happens when
1. use CONIFG_4KSTACK
or
2. make use of stop_machine_create(), stop_machine_destroy().
   A new interface added by this commit.
  http://git.kernel.org/?p=linux/kernel/git/torvalds/  linux-2.6.git;a=commit;h=9ea09af3bd3090e8349ca2899ca2011bd94cda85
   You can do no-fail stop_machine_run().

Thanks,
-Kame

Re: s2disk hang update

[KAMEZAWA Hiroyuki]

On Tue, 23 Feb 2010 22:13:56 +0100
"Rafael J. Wysocki" <rjw@sisk.pl> wrote:

> Well, it still looks like we're waiting for create_workqueue_thread() to
> return, which probably is trying to allocate memory for the thread
> structure.
> 
> My guess is that the preallocated memory pages freed by
> free_unnecessary_pages() go into a place from where they cannot be taken for
> subsequent NOIO allocations.  I have no idea why that happens though.
> 
> To test that theory you can try to change GFP_IOFS to GFP_KERNEL in the
> calls to clear_gfp_allowed_mask() in kernel/power/hibernate.c (and in
> kernel/power/suspend.c for completness).
> 

If allocation of kernel threads for stop_machine_run() is the problem,

What happens when
1. use CONIFG_4KSTACK
or
2. make use of stop_machine_create(), stop_machine_destroy().
   A new interface added by this commit.
  http://git.kernel.org/?p=linux/kernel/git/torvalds/  linux-2.6.git;a=commit;h=9ea09af3bd3090e8349ca2899ca2011bd94cda85
   You can do no-fail stop_machine_run().

Thanks,
-Kame

--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
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Re: s2disk hang update

[Alan Jenkins]

On 2/24/10, KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> wrote:
> On Tue, 23 Feb 2010 22:13:56 +0100
> "Rafael J. Wysocki" <rjw@sisk.pl> wrote:
>
>> Well, it still looks like we're waiting for create_workqueue_thread() to
>> return, which probably is trying to allocate memory for the thread
>> structure.
>>
>> My guess is that the preallocated memory pages freed by
>> free_unnecessary_pages() go into a place from where they cannot be taken
>> for
>> subsequent NOIO allocations.  I have no idea why that happens though.
>>
>> To test that theory you can try to change GFP_IOFS to GFP_KERNEL in the
>> calls to clear_gfp_allowed_mask() in kernel/power/hibernate.c (and in
>> kernel/power/suspend.c for completness).
>>
>
> If allocation of kernel threads for stop_machine_run() is the problem,
>
> What happens when
> 1. use CONIFG_4KSTACK

Interesting question.  4KSTACK doesn't stop it though; it hangs in the
same place.

> or
> 2. make use of stop_machine_create(), stop_machine_destroy().
>    A new interface added by this commit.
>   http://git.kernel.org/?p=linux/kernel/git/torvalds/
> linux-2.6.git;a=commit;h=9ea09af3bd3090e8349ca2899ca2011bd94cda85
>    You can do no-fail stop_machine_run().
>
> Thanks,
> -Kame

Since this is a uni-processor machine that would make it a single 4K
allocation.  AIUI this is supposed to be ok.  The hibernation code
tries to make sure there is over 1000x that much free RAM (ish), in
anticipation of this sort of requirement.

There appear to be some deficiencies in the way this allowance works,
which have recently been exposed.  And unfortunately the allocation
hangs instead of failing, so we're in unclean shutdown territory.

I have three test scenarios at the moment.  I've tested two patches
which appear to fix the common cases, but there's still a third test
scenario to figure out.  (Repeated hibernation attempts with
insufficient swap - encountered during real-world use, believe it or
not).

Alan

Re: s2disk hang update

[Alan Jenkins]

On 2/24/10, KAMEZAWA Hiroyuki <kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org> wrote:
> On Tue, 23 Feb 2010 22:13:56 +0100
> "Rafael J. Wysocki" <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
>
>> Well, it still looks like we're waiting for create_workqueue_thread() to
>> return, which probably is trying to allocate memory for the thread
>> structure.
>>
>> My guess is that the preallocated memory pages freed by
>> free_unnecessary_pages() go into a place from where they cannot be taken
>> for
>> subsequent NOIO allocations.  I have no idea why that happens though.
>>
>> To test that theory you can try to change GFP_IOFS to GFP_KERNEL in the
>> calls to clear_gfp_allowed_mask() in kernel/power/hibernate.c (and in
>> kernel/power/suspend.c for completness).
>>
>
> If allocation of kernel threads for stop_machine_run() is the problem,
>
> What happens when
> 1. use CONIFG_4KSTACK

Interesting question.  4KSTACK doesn't stop it though; it hangs in the
same place.

> or
> 2. make use of stop_machine_create(), stop_machine_destroy().
>    A new interface added by this commit.
>   http://git.kernel.org/?p=linux/kernel/git/torvalds/
> linux-2.6.git;a=commit;h=9ea09af3bd3090e8349ca2899ca2011bd94cda85
>    You can do no-fail stop_machine_run().
>
> Thanks,
> -Kame

Since this is a uni-processor machine that would make it a single 4K
allocation.  AIUI this is supposed to be ok.  The hibernation code
tries to make sure there is over 1000x that much free RAM (ish), in
anticipation of this sort of requirement.

There appear to be some deficiencies in the way this allowance works,
which have recently been exposed.  And unfortunately the allocation
hangs instead of failing, so we're in unclean shutdown territory.

I have three test scenarios at the moment.  I've tested two patches
which appear to fix the common cases, but there's still a third test
scenario to figure out.  (Repeated hibernation attempts with
insufficient swap - encountered during real-world use, believe it or
not).

Alan

Re: s2disk hang update

[Alan Jenkins]

On 2/24/10, KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> wrote:
> On Tue, 23 Feb 2010 22:13:56 +0100
> "Rafael J. Wysocki" <rjw@sisk.pl> wrote:
>
>> Well, it still looks like we're waiting for create_workqueue_thread() to
>> return, which probably is trying to allocate memory for the thread
>> structure.
>>
>> My guess is that the preallocated memory pages freed by
>> free_unnecessary_pages() go into a place from where they cannot be taken
>> for
>> subsequent NOIO allocations.  I have no idea why that happens though.
>>
>> To test that theory you can try to change GFP_IOFS to GFP_KERNEL in the
>> calls to clear_gfp_allowed_mask() in kernel/power/hibernate.c (and in
>> kernel/power/suspend.c for completness).
>>
>
> If allocation of kernel threads for stop_machine_run() is the problem,
>
> What happens when
> 1. use CONIFG_4KSTACK

Interesting question.  4KSTACK doesn't stop it though; it hangs in the
same place.

> or
> 2. make use of stop_machine_create(), stop_machine_destroy().
>    A new interface added by this commit.
>   http://git.kernel.org/?p=linux/kernel/git/torvalds/
> linux-2.6.git;a=commit;h=9ea09af3bd3090e8349ca2899ca2011bd94cda85
>    You can do no-fail stop_machine_run().
>
> Thanks,
> -Kame

Since this is a uni-processor machine that would make it a single 4K
allocation.  AIUI this is supposed to be ok.  The hibernation code
tries to make sure there is over 1000x that much free RAM (ish), in
anticipation of this sort of requirement.

There appear to be some deficiencies in the way this allowance works,
which have recently been exposed.  And unfortunately the allocation
hangs instead of failing, so we're in unclean shutdown territory.

I have three test scenarios at the moment.  I've tested two patches
which appear to fix the common cases, but there's still a third test
scenario to figure out.  (Repeated hibernation attempts with
insufficient swap - encountered during real-world use, believe it or
not).

Alan

--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org.  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>

Re: s2disk hang update

[Alan Jenkins]

On 2/24/10, KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> wrote:
> On Tue, 23 Feb 2010 22:13:56 +0100
> "Rafael J. Wysocki" <rjw@sisk.pl> wrote:
>
>> Well, it still looks like we're waiting for create_workqueue_thread() to
>> return, which probably is trying to allocate memory for the thread
>> structure.
>>
>> My guess is that the preallocated memory pages freed by
>> free_unnecessary_pages() go into a place from where they cannot be taken
>> for
>> subsequent NOIO allocations.  I have no idea why that happens though.
>>
>> To test that theory you can try to change GFP_IOFS to GFP_KERNEL in the
>> calls to clear_gfp_allowed_mask() in kernel/power/hibernate.c (and in
>> kernel/power/suspend.c for completness).
>>
>
> If allocation of kernel threads for stop_machine_run() is the problem,
>
> What happens when
> 1. use CONIFG_4KSTACK

Interesting question.  4KSTACK doesn't stop it though; it hangs in the
same place.

> or
> 2. make use of stop_machine_create(), stop_machine_destroy().
>    A new interface added by this commit.
>   http://git.kernel.org/?p=linux/kernel/git/torvalds/
> linux-2.6.git;a=commit;h=9ea09af3bd3090e8349ca2899ca2011bd94cda85
>    You can do no-fail stop_machine_run().
>
> Thanks,
> -Kame

Since this is a uni-processor machine that would make it a single 4K
allocation.  AIUI this is supposed to be ok.  The hibernation code
tries to make sure there is over 1000x that much free RAM (ish), in
anticipation of this sort of requirement.

There appear to be some deficiencies in the way this allowance works,
which have recently been exposed.  And unfortunately the allocation
hangs instead of failing, so we're in unclean shutdown territory.

I have three test scenarios at the moment.  I've tested two patches
which appear to fix the common cases, but there's still a third test
scenario to figure out.  (Repeated hibernation attempts with
insufficient swap - encountered during real-world use, believe it or
not).

Alan

Re: s2disk hang update

[Rafael J. Wysocki]

On Wednesday 24 February 2010, KAMEZAWA Hiroyuki wrote:
> On Tue, 23 Feb 2010 22:13:56 +0100
> "Rafael J. Wysocki" <rjw@sisk.pl> wrote:
> 
> > Well, it still looks like we're waiting for create_workqueue_thread() to
> > return, which probably is trying to allocate memory for the thread
> > structure.
> > 
> > My guess is that the preallocated memory pages freed by
> > free_unnecessary_pages() go into a place from where they cannot be taken for
> > subsequent NOIO allocations.  I have no idea why that happens though.
> > 
> > To test that theory you can try to change GFP_IOFS to GFP_KERNEL in the
> > calls to clear_gfp_allowed_mask() in kernel/power/hibernate.c (and in
> > kernel/power/suspend.c for completness).
> > 
> 
> If allocation of kernel threads for stop_machine_run() is the problem,
> 
> What happens when
> 1. use CONIFG_4KSTACK
> or
> 2. make use of stop_machine_create(), stop_machine_destroy().
>    A new interface added by this commit.
>   http://git.kernel.org/?p=linux/kernel/git/torvalds/  linux-2.6.git;a=commit;h=9ea09af3bd3090e8349ca2899ca2011bd94cda85
>    You can do no-fail stop_machine_run().

Well, that would probably help in this particular case, but the root cause
seems to be that the (theoretically) freed memory cannot be used for NOIO
allocations for some reason, which is shown by the Alan's testing.

Generally speaking, we use __free_page() to release some pages preallocated
for the hibernation image, but the memory subsystem refuses to use these
pages for NOIO allocations made later.  However, it evidently is able to use
them is __GFP_WAIT is unset in the mask.

Is this behavior intentional?

Rafael

Re: s2disk hang update

[Rafael J. Wysocki]

On Wednesday 24 February 2010, KAMEZAWA Hiroyuki wrote:
> On Tue, 23 Feb 2010 22:13:56 +0100
> "Rafael J. Wysocki" <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> 
> > Well, it still looks like we're waiting for create_workqueue_thread() to
> > return, which probably is trying to allocate memory for the thread
> > structure.
> > 
> > My guess is that the preallocated memory pages freed by
> > free_unnecessary_pages() go into a place from where they cannot be taken for
> > subsequent NOIO allocations.  I have no idea why that happens though.
> > 
> > To test that theory you can try to change GFP_IOFS to GFP_KERNEL in the
> > calls to clear_gfp_allowed_mask() in kernel/power/hibernate.c (and in
> > kernel/power/suspend.c for completness).
> > 
> 
> If allocation of kernel threads for stop_machine_run() is the problem,
> 
> What happens when
> 1. use CONIFG_4KSTACK
> or
> 2. make use of stop_machine_create(), stop_machine_destroy().
>    A new interface added by this commit.
>   http://git.kernel.org/?p=linux/kernel/git/torvalds/  linux-2.6.git;a=commit;h=9ea09af3bd3090e8349ca2899ca2011bd94cda85
>    You can do no-fail stop_machine_run().

Well, that would probably help in this particular case, but the root cause
seems to be that the (theoretically) freed memory cannot be used for NOIO
allocations for some reason, which is shown by the Alan's testing.

Generally speaking, we use __free_page() to release some pages preallocated
for the hibernation image, but the memory subsystem refuses to use these
pages for NOIO allocations made later.  However, it evidently is able to use
them is __GFP_WAIT is unset in the mask.

Is this behavior intentional?

Rafael

Re: s2disk hang update

[Rafael J. Wysocki]

On Wednesday 24 February 2010, KAMEZAWA Hiroyuki wrote:
> On Tue, 23 Feb 2010 22:13:56 +0100
> "Rafael J. Wysocki" <rjw@sisk.pl> wrote:
> 
> > Well, it still looks like we're waiting for create_workqueue_thread() to
> > return, which probably is trying to allocate memory for the thread
> > structure.
> > 
> > My guess is that the preallocated memory pages freed by
> > free_unnecessary_pages() go into a place from where they cannot be taken for
> > subsequent NOIO allocations.  I have no idea why that happens though.
> > 
> > To test that theory you can try to change GFP_IOFS to GFP_KERNEL in the
> > calls to clear_gfp_allowed_mask() in kernel/power/hibernate.c (and in
> > kernel/power/suspend.c for completness).
> > 
> 
> If allocation of kernel threads for stop_machine_run() is the problem,
> 
> What happens when
> 1. use CONIFG_4KSTACK
> or
> 2. make use of stop_machine_create(), stop_machine_destroy().
>    A new interface added by this commit.
>   http://git.kernel.org/?p=linux/kernel/git/torvalds/  linux-2.6.git;a=commit;h=9ea09af3bd3090e8349ca2899ca2011bd94cda85
>    You can do no-fail stop_machine_run().

Well, that would probably help in this particular case, but the root cause
seems to be that the (theoretically) freed memory cannot be used for NOIO
allocations for some reason, which is shown by the Alan's testing.

Generally speaking, we use __free_page() to release some pages preallocated
for the hibernation image, but the memory subsystem refuses to use these
pages for NOIO allocations made later.  However, it evidently is able to use
them is __GFP_WAIT is unset in the mask.

Is this behavior intentional?

Rafael

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Re: s2disk hang update

[Rafael J. Wysocki]

On Wednesday 24 February 2010, KAMEZAWA Hiroyuki wrote:
> On Tue, 23 Feb 2010 22:13:56 +0100
> "Rafael J. Wysocki" <rjw@sisk.pl> wrote:
> 
> > Well, it still looks like we're waiting for create_workqueue_thread() to
> > return, which probably is trying to allocate memory for the thread
> > structure.
> > 
> > My guess is that the preallocated memory pages freed by
> > free_unnecessary_pages() go into a place from where they cannot be taken for
> > subsequent NOIO allocations.  I have no idea why that happens though.
> > 
> > To test that theory you can try to change GFP_IOFS to GFP_KERNEL in the
> > calls to clear_gfp_allowed_mask() in kernel/power/hibernate.c (and in
> > kernel/power/suspend.c for completness).
> > 
> 
> If allocation of kernel threads for stop_machine_run() is the problem,
> 
> What happens when
> 1. use CONIFG_4KSTACK
> or
> 2. make use of stop_machine_create(), stop_machine_destroy().
>    A new interface added by this commit.
>   http://git.kernel.org/?p=linux/kernel/git/torvalds/  linux-2.6.git;a=commit;h=9ea09af3bd3090e8349ca2899ca2011bd94cda85
>    You can do no-fail stop_machine_run().

Well, that would probably help in this particular case, but the root cause
seems to be that the (theoretically) freed memory cannot be used for NOIO
allocations for some reason, which is shown by the Alan's testing.

Generally speaking, we use __free_page() to release some pages preallocated
for the hibernation image, but the memory subsystem refuses to use these
pages for NOIO allocations made later.  However, it evidently is able to use
them is __GFP_WAIT is unset in the mask.

Is this behavior intentional?

Rafael

Re: s2disk hang update

[Alan Jenkins]

[-- Attachment #1: Type: text/plain, Size: 8534 bytes --]

On 2/23/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> On Tuesday 23 February 2010, Alan Jenkins wrote:
>> On 2/22/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> > On Monday 22 February 2010, Alan Jenkins wrote:
>> >> Rafael J. Wysocki wrote:
>> >> > On Friday 19 February 2010, Alan Jenkins wrote:
>> >> >
>> >> >> On 2/18/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> >> >>
>> >> >>> On Thursday 18 February 2010, Alan Jenkins wrote:
>> >> >>>
>> >> >>>> On 2/17/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> >> >>>>
>> >> >>>>> On Wednesday 17 February 2010, Alan Jenkins wrote:
>> >> >>>>>
>> >> >>>>>> On 2/16/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> >> >>>>>>
>> >> >>>>>>> On Tuesday 16 February 2010, Alan Jenkins wrote:
>> >> >>>>>>>
>> >> >>>>>>>> On 2/16/10, Alan Jenkins <sourcejedi.lkml@googlemail.com>
>> >> >>>>>>>> wrote:
>> >> >>>>>>>>
>> >> >>>>>>>>> On 2/15/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> >> >>>>>>>>>
>> >> >>>>>>>>>> On Tuesday 09 February 2010, Alan Jenkins wrote:
>> >> >>>>>>>>>>
>> >> >>>>>>>>>>> Perhaps I spoke too soon.  I see the same hang if I run too
>> >> >>>>>>>>>>> many
>> >> >>>>>>>>>>> applications.  The first hibernation fails with "not enough
>> >> >>>>>>>>>>> swap"
>> >> >>>>>>>>>>> as
>> >> >>>>>>>>>>> expected, but the second or third attempt hangs (with the
>> >> >>>>>>>>>>> same
>> >> >>>>>>>>>>> backtrace
>> >> >>>>>>>>>>> as before).
>> >> >>>>>>>>>>>
>> >> >>>>>>>>>>> The patch definitely helps though.  Without the patch, I
>> >> >>>>>>>>>>> see a
>> >> >>>>>>>>>>> hang
>> >> >>>>>>>>>>> the
>> >> >>>>>>>>>>> first time I try to hibernate with too many applications
>> >> >>>>>>>>>>> running.
>> >> >>>>>>>>>>>
>> >> >>>>>>>>>> Well, I have an idea.
>> >> >>>>>>>>>>
>> >> >>>>>>>>>> Can you try to apply the appended patch in addition and see
>> >> >>>>>>>>>> if
>> >> >>>>>>>>>> that
>> >> >>>>>>>>>> helps?
>> >> >>>>>>>>>>
>> >> >>>>>>>>>> Rafael
>> >> >>>>>>>>>>
>> >> >>>>>>>>> It doesn't seem to help.
>> >> >>>>>>>>>
>> >> >>>>>>>> To be clear: It doesn't stop the hang when I hibernate with
>> >> >>>>>>>> too
>> >> >>>>>>>> many
>> >> >>>>>>>> applications.
>> >> >>>>>>>>
>> >> >>>>>>>> It does stop the same hang in a different case though.
>> >> >>>>>>>>
>> >> >>>>>>>> 1. boot with init=/bin/bash
>> >> >>>>>>>> 2. run s2disk
>> >> >>>>>>>> 3. cancel the s2disk
>> >> >>>>>>>> 4. repeat steps 2&3
>> >> >>>>>>>>
>> >> >>>>>>>> With the patch, I can run 10s of iterations, with no hang.
>> >> >>>>>>>> Without the patch, it soon hangs, (in disable_nonboot_cpus(),
>> >> >>>>>>>> as
>> >> >>>>>>>> always).
>> >> >>>>>>>>
>> >> >>>>>>>> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no
>> >> >>>>>>>> problem.
>> >> >>>>>>>> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an
>> >> >>>>>>>> allocation
>> >> >>>>>>>> failure after a couple of iterations ("kthreadd: page
>> >> >>>>>>>> allocation
>> >> >>>>>>>> failure. order:1, mode:0xd0").  It looks like it might be the
>> >> >>>>>>>> same
>> >> >>>>>>>> stop_machine thread allocation failure that causes the hang.
>> >> >>>>>>>>
>> >> >>>>>>> Have you tested it alone or on top of the previous one?  If
>> >> >>>>>>> you've
>> >> >>>>>>> tested it
>> >> >>>>>>> alone, please apply the appended one in addition to it and
>> >> >>>>>>> retest.
>> >> >>>>>>>
>> >> >>>>>>> Rafael
>> >> >>>>>>>
>> >> >>>>>> I did test with both patches applied together -
>> >> >>>>>>
>> >> >>>>>> 1. [Update] MM / PM: Force GFP_NOIO during suspend/hibernation
>> >> >>>>>> and
>> >> >>>>>> resume
>> >> >>>>>> 2. "reducing the number of pages that we're going to keep
>> >> >>>>>> preallocated
>> >> >>>>>> by
>> >> >>>>>> 20%"
>> >> >>>>>>
>> >> >>>>> In that case you can try to reduce the number of preallocated
>> >> >>>>> pages
>> >> >>>>> even
>> >> >>>>> more,
>> >> >>>>> ie. change "/ 5" to "/ 2" (for example) in the second patch.
>> >> >>>>>
>> >> >>>> It still hangs if I try to hibernate a couple of times with too
>> >> >>>> many
>> >> >>>> applications.
>> >> >>>>
>> >> >>> Hmm.  I guess I asked that before, but is this a 32-bit or 64-bit
>> >> >>> system and
>> >> >>> how much RAM is there in the box?
>> >> >>>
>> >> >>> Rafael
>> >> >>>
>> >> >> EeePC 701.  32 bit.  512Mb RAM.  350Mb swap file, on a "first-gen"
>> >> >> SSD.
>> >> >>
>> >> >
>> >> > Hmm.  I'd try to make  free_unnecessary_pages() free all of the
>> >> > preallocated
>> >> > pages and see what happens.
>> >> >
>> >>
>> >> It still hangs in hibernation_snapshot() / disable_nonboot_cpus().
>> >> After apparently freeing over 400Mb / 100,000 pages of preallocated
>> >> ram.
>> >>
>> >>
>> >>
>> >> There is a change which I missed before.  When I applied your first
>> >> patch ("Force GFP_NOIO during suspend" etc.), it did change the hung
>> >> task backtraces a bit.  I don't know if it tells us anything.
>> >>
>> >> Without the patch, there were two backtraces.  The first backtrace
>> >> suggested a problem allocating pages for a kernel thread (at
>> >> copy_process() / try_to_free_pages()).  The second showed that this
>> >> problem was blocking s2disk (at hibernation_snapshot() /
>> >> disable_nonboot_cpus() / stop_machine_create()).
>> >>
>> >> With the GFP_NOIO patch, I see only the s2disk backtrace.
>> >
>> > Can you please post this backtrace?
>>
>> Sure.  It's rather like the one I posted before, except
>>
>> a) it only shows the one hung task (s2disk)
>> b) this time I had lockdep enabled
>> c) this time most of the lines don't have question marks.
>
> Well, it still looks like we're waiting for create_workqueue_thread() to
> return, which probably is trying to allocate memory for the thread
> structure.
>
> My guess is that the preallocated memory pages freed by
> free_unnecessary_pages() go into a place from where they cannot be taken for
> subsequent NOIO allocations.  I have no idea why that happens though.
>
> To test that theory you can try to change GFP_IOFS to GFP_KERNEL in the
> calls to clear_gfp_allowed_mask() in kernel/power/hibernate.c (and in
> kernel/power/suspend.c for completness).

Effectively forcing GFP_NOWAIT, so the allocation should fail instead
of hanging?

It seems to stop the hang, but I don't see any other difference - the
hibernation process isn't stopped earlier, and I don't get any new
kernel messages about allocation failures.  I wonder if it's because
GFP_NOWAIT triggers ALLOC_HARDER.

I have other evidence which argues for your theory:

[ successful s2disk, with forced NOIO (but not NOWAIT), and test code
as attached ]

 Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.
 1280 GFP_NOWAIT allocations of order 0 are possible
 640 GFP_NOWAIT allocations of order 1 are possible
 320 GFP_NOWAIT allocations of order 2 are possible

[ note - 1280 pages is the maximum test allocation used here.  The
test code is only accurate when talking about smaller numbers of free
pages ]

 1280 GFP_KERNEL allocations of order 0 are possible
 640 GFP_KERNEL allocations of order 1 are possible
 320 GFP_KERNEL allocations of order 2 are possible

 PM: Preallocating image memory...
 212 GFP_NOWAIT allocations of order 0 are possible
 102 GFP_NOWAIT allocations of order 1 are possible
 50 GFP_NOWAIT allocations of order 2 are possible

 Freeing all 90083 preallocated pages
 (and 0 highmem pages, out of 0)
 190 GFP_NOWAIT allocations of order 0 are possible
 102 GFP_NOWAIT allocations of order 1 are possible
 50 GFP_NOWAIT allocations of order 2 are possible
 1280 GFP_KERNEL allocations of order 0 are possible
 640 GFP_KERNEL allocations of order 1 are possible
 320 GFP_KERNEL allocations of order 2 are possible
 done (allocated 90083 pages)

It looks like you're right and the freed pages are not accessible with
GFP_NOWAIT for some reason.

I also tried a number of test runs with too many applications, and saw this:

Freeing all 104006 preallocated pages ...
65 GFP_NOWAIT allocations of order 0 ...
18 GFP_NOWAIT allocations of order 1 ...
9 GFP_NOWAIT allocations of order 2 ...
0 GFP_KERNEL allocations of order 0 are possible
...
Disabling nonboot cpus ...
...
PM: Hibernation image created
Force enabled HPET at resume
PM: early thaw of devices complete after ... msecs

<hang, no backtrace visible even after 120 seconds>

I'm not bothered by the new hang; the test code will inevitably have
some side effects.  I'm not sure why GFP_KERNEL allocations would fail
in this scenario though...  perhaps the difference is that we've
swapped out the entire userspace so GFP_IO doesn't help.

Regards
Alan

[-- Attachment #2: check-free.patch --]
[-- Type: text/x-patch, Size: 2446 bytes --]

diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c
index da5288e..2e245d9 100644
--- a/kernel/power/hibernate.c
+++ b/kernel/power/hibernate.c
@@ -262,6 +262,7 @@ static int create_image(int platform_mode)
 	if (error || hibernation_test(TEST_PLATFORM))
 		goto Platform_finish;
 
+	check_free(GFP_NOWAIT);
 	error = disable_nonboot_cpus();
 	if (error || hibernation_test(TEST_CPUS)
 	    || hibernation_testmode(HIBERNATION_TEST))
diff --git a/kernel/power/power.h b/kernel/power/power.h
index 46c5a26..d2178dc 100644
--- a/kernel/power/power.h
+++ b/kernel/power/power.h
@@ -236,3 +236,53 @@ static inline void suspend_thaw_processes(void)
 {
 }
 #endif
+
+/* An empirical check on the number of free pages */
+static inline int check_free_pages(gfp_t gfp_flags, const char *gfp_name, int order)
+{
+	int ret;
+	int count = 0;
+	void *first = NULL;
+	void **p = &first;
+	unsigned long page;
+
+	/* Allocate free pages into a linked list, headed by "first" */
+	while(count < ((PAGES_FOR_IO + SPARE_PAGES) >> order)) {
+		page = __get_free_pages(gfp_flags|__GFP_NOWARN, order);
+		if (!page)
+			break;
+		*p = (void *)page;
+		p = (void **)page;
+		count++;
+	}
+	*p = NULL;
+
+	ret = count;
+	printk(KERN_INFO
+		"%d %s allocations of order %d are possible\n",
+		count, gfp_name, order);
+
+	/* Free the pages again */
+	p = first;
+	while(p) {
+		page = (unsigned long) p;
+		p = *p;
+		free_pages(page, order);
+		count--;
+	}
+	BUG_ON(count != 0);
+
+	return ret;
+}
+
+static inline void __check_free(gfp_t gfp_flags, const char *gfp_name)
+{
+	int order;
+
+	for (order = 0; order < 3; order++)
+		if (check_free_pages(gfp_flags, gfp_name, order) <= 0)
+			break;
+}
+
+#define check_free(flags) __check_free(flags, #flags)
+
diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
index 36cb168..605b7b7 100644
--- a/kernel/power/snapshot.c
+++ b/kernel/power/snapshot.c
@@ -1261,6 +1261,8 @@ int hibernate_preallocate_memory(void)
 	struct timeval start, stop;
 	int error;
 
+	check_free(GFP_NOWAIT);
+	check_free(GFP_KERNEL);
 	printk(KERN_INFO "PM: Preallocating image memory... ");
 	do_gettimeofday(&start);
 
@@ -1350,7 +1352,10 @@ int hibernate_preallocate_memory(void)
 	 * pages in memory, but we have allocated more.  Release the excessive
 	 * ones now.
 	 */
+	check_free(GFP_NOWAIT);
 	free_unnecessary_pages();
+	check_free(GFP_NOWAIT);
+	check_free(GFP_KERNEL);
 
  out:
 	do_gettimeofday(&stop);

[-- Attachment #3: Type: text/plain, Size: 0 bytes --]

Re: s2disk hang update

[Alan Jenkins]

[-- Attachment #1: Type: text/plain, Size: 8534 bytes --]

On 2/23/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> On Tuesday 23 February 2010, Alan Jenkins wrote:
>> On 2/22/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> > On Monday 22 February 2010, Alan Jenkins wrote:
>> >> Rafael J. Wysocki wrote:
>> >> > On Friday 19 February 2010, Alan Jenkins wrote:
>> >> >
>> >> >> On 2/18/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> >> >>
>> >> >>> On Thursday 18 February 2010, Alan Jenkins wrote:
>> >> >>>
>> >> >>>> On 2/17/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> >> >>>>
>> >> >>>>> On Wednesday 17 February 2010, Alan Jenkins wrote:
>> >> >>>>>
>> >> >>>>>> On 2/16/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> >> >>>>>>
>> >> >>>>>>> On Tuesday 16 February 2010, Alan Jenkins wrote:
>> >> >>>>>>>
>> >> >>>>>>>> On 2/16/10, Alan Jenkins <sourcejedi.lkml@googlemail.com>
>> >> >>>>>>>> wrote:
>> >> >>>>>>>>
>> >> >>>>>>>>> On 2/15/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> >> >>>>>>>>>
>> >> >>>>>>>>>> On Tuesday 09 February 2010, Alan Jenkins wrote:
>> >> >>>>>>>>>>
>> >> >>>>>>>>>>> Perhaps I spoke too soon.  I see the same hang if I run too
>> >> >>>>>>>>>>> many
>> >> >>>>>>>>>>> applications.  The first hibernation fails with "not enough
>> >> >>>>>>>>>>> swap"
>> >> >>>>>>>>>>> as
>> >> >>>>>>>>>>> expected, but the second or third attempt hangs (with the
>> >> >>>>>>>>>>> same
>> >> >>>>>>>>>>> backtrace
>> >> >>>>>>>>>>> as before).
>> >> >>>>>>>>>>>
>> >> >>>>>>>>>>> The patch definitely helps though.  Without the patch, I
>> >> >>>>>>>>>>> see a
>> >> >>>>>>>>>>> hang
>> >> >>>>>>>>>>> the
>> >> >>>>>>>>>>> first time I try to hibernate with too many applications
>> >> >>>>>>>>>>> running.
>> >> >>>>>>>>>>>
>> >> >>>>>>>>>> Well, I have an idea.
>> >> >>>>>>>>>>
>> >> >>>>>>>>>> Can you try to apply the appended patch in addition and see
>> >> >>>>>>>>>> if
>> >> >>>>>>>>>> that
>> >> >>>>>>>>>> helps?
>> >> >>>>>>>>>>
>> >> >>>>>>>>>> Rafael
>> >> >>>>>>>>>>
>> >> >>>>>>>>> It doesn't seem to help.
>> >> >>>>>>>>>
>> >> >>>>>>>> To be clear: It doesn't stop the hang when I hibernate with
>> >> >>>>>>>> too
>> >> >>>>>>>> many
>> >> >>>>>>>> applications.
>> >> >>>>>>>>
>> >> >>>>>>>> It does stop the same hang in a different case though.
>> >> >>>>>>>>
>> >> >>>>>>>> 1. boot with init=/bin/bash
>> >> >>>>>>>> 2. run s2disk
>> >> >>>>>>>> 3. cancel the s2disk
>> >> >>>>>>>> 4. repeat steps 2&3
>> >> >>>>>>>>
>> >> >>>>>>>> With the patch, I can run 10s of iterations, with no hang.
>> >> >>>>>>>> Without the patch, it soon hangs, (in disable_nonboot_cpus(),
>> >> >>>>>>>> as
>> >> >>>>>>>> always).
>> >> >>>>>>>>
>> >> >>>>>>>> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no
>> >> >>>>>>>> problem.
>> >> >>>>>>>> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an
>> >> >>>>>>>> allocation
>> >> >>>>>>>> failure after a couple of iterations ("kthreadd: page
>> >> >>>>>>>> allocation
>> >> >>>>>>>> failure. order:1, mode:0xd0").  It looks like it might be the
>> >> >>>>>>>> same
>> >> >>>>>>>> stop_machine thread allocation failure that causes the hang.
>> >> >>>>>>>>
>> >> >>>>>>> Have you tested it alone or on top of the previous one?  If
>> >> >>>>>>> you've
>> >> >>>>>>> tested it
>> >> >>>>>>> alone, please apply the appended one in addition to it and
>> >> >>>>>>> retest.
>> >> >>>>>>>
>> >> >>>>>>> Rafael
>> >> >>>>>>>
>> >> >>>>>> I did test with both patches applied together -
>> >> >>>>>>
>> >> >>>>>> 1. [Update] MM / PM: Force GFP_NOIO during suspend/hibernation
>> >> >>>>>> and
>> >> >>>>>> resume
>> >> >>>>>> 2. "reducing the number of pages that we're going to keep
>> >> >>>>>> preallocated
>> >> >>>>>> by
>> >> >>>>>> 20%"
>> >> >>>>>>
>> >> >>>>> In that case you can try to reduce the number of preallocated
>> >> >>>>> pages
>> >> >>>>> even
>> >> >>>>> more,
>> >> >>>>> ie. change "/ 5" to "/ 2" (for example) in the second patch.
>> >> >>>>>
>> >> >>>> It still hangs if I try to hibernate a couple of times with too
>> >> >>>> many
>> >> >>>> applications.
>> >> >>>>
>> >> >>> Hmm.  I guess I asked that before, but is this a 32-bit or 64-bit
>> >> >>> system and
>> >> >>> how much RAM is there in the box?
>> >> >>>
>> >> >>> Rafael
>> >> >>>
>> >> >> EeePC 701.  32 bit.  512Mb RAM.  350Mb swap file, on a "first-gen"
>> >> >> SSD.
>> >> >>
>> >> >
>> >> > Hmm.  I'd try to make  free_unnecessary_pages() free all of the
>> >> > preallocated
>> >> > pages and see what happens.
>> >> >
>> >>
>> >> It still hangs in hibernation_snapshot() / disable_nonboot_cpus().
>> >> After apparently freeing over 400Mb / 100,000 pages of preallocated
>> >> ram.
>> >>
>> >>
>> >>
>> >> There is a change which I missed before.  When I applied your first
>> >> patch ("Force GFP_NOIO during suspend" etc.), it did change the hung
>> >> task backtraces a bit.  I don't know if it tells us anything.
>> >>
>> >> Without the patch, there were two backtraces.  The first backtrace
>> >> suggested a problem allocating pages for a kernel thread (at
>> >> copy_process() / try_to_free_pages()).  The second showed that this
>> >> problem was blocking s2disk (at hibernation_snapshot() /
>> >> disable_nonboot_cpus() / stop_machine_create()).
>> >>
>> >> With the GFP_NOIO patch, I see only the s2disk backtrace.
>> >
>> > Can you please post this backtrace?
>>
>> Sure.  It's rather like the one I posted before, except
>>
>> a) it only shows the one hung task (s2disk)
>> b) this time I had lockdep enabled
>> c) this time most of the lines don't have question marks.
>
> Well, it still looks like we're waiting for create_workqueue_thread() to
> return, which probably is trying to allocate memory for the thread
> structure.
>
> My guess is that the preallocated memory pages freed by
> free_unnecessary_pages() go into a place from where they cannot be taken for
> subsequent NOIO allocations.  I have no idea why that happens though.
>
> To test that theory you can try to change GFP_IOFS to GFP_KERNEL in the
> calls to clear_gfp_allowed_mask() in kernel/power/hibernate.c (and in
> kernel/power/suspend.c for completness).

Effectively forcing GFP_NOWAIT, so the allocation should fail instead
of hanging?

It seems to stop the hang, but I don't see any other difference - the
hibernation process isn't stopped earlier, and I don't get any new
kernel messages about allocation failures.  I wonder if it's because
GFP_NOWAIT triggers ALLOC_HARDER.

I have other evidence which argues for your theory:

[ successful s2disk, with forced NOIO (but not NOWAIT), and test code
as attached ]

 Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.
 1280 GFP_NOWAIT allocations of order 0 are possible
 640 GFP_NOWAIT allocations of order 1 are possible
 320 GFP_NOWAIT allocations of order 2 are possible

[ note - 1280 pages is the maximum test allocation used here.  The
test code is only accurate when talking about smaller numbers of free
pages ]

 1280 GFP_KERNEL allocations of order 0 are possible
 640 GFP_KERNEL allocations of order 1 are possible
 320 GFP_KERNEL allocations of order 2 are possible

 PM: Preallocating image memory...
 212 GFP_NOWAIT allocations of order 0 are possible
 102 GFP_NOWAIT allocations of order 1 are possible
 50 GFP_NOWAIT allocations of order 2 are possible

 Freeing all 90083 preallocated pages
 (and 0 highmem pages, out of 0)
 190 GFP_NOWAIT allocations of order 0 are possible
 102 GFP_NOWAIT allocations of order 1 are possible
 50 GFP_NOWAIT allocations of order 2 are possible
 1280 GFP_KERNEL allocations of order 0 are possible
 640 GFP_KERNEL allocations of order 1 are possible
 320 GFP_KERNEL allocations of order 2 are possible
 done (allocated 90083 pages)

It looks like you're right and the freed pages are not accessible with
GFP_NOWAIT for some reason.

I also tried a number of test runs with too many applications, and saw this:

Freeing all 104006 preallocated pages ...
65 GFP_NOWAIT allocations of order 0 ...
18 GFP_NOWAIT allocations of order 1 ...
9 GFP_NOWAIT allocations of order 2 ...
0 GFP_KERNEL allocations of order 0 are possible
...
Disabling nonboot cpus ...
...
PM: Hibernation image created
Force enabled HPET at resume
PM: early thaw of devices complete after ... msecs

<hang, no backtrace visible even after 120 seconds>

I'm not bothered by the new hang; the test code will inevitably have
some side effects.  I'm not sure why GFP_KERNEL allocations would fail
in this scenario though...  perhaps the difference is that we've
swapped out the entire userspace so GFP_IO doesn't help.

Regards
Alan

[-- Attachment #2: check-free.patch --]
[-- Type: text/x-patch, Size: 2446 bytes --]

diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c
index da5288e..2e245d9 100644
--- a/kernel/power/hibernate.c
+++ b/kernel/power/hibernate.c
@@ -262,6 +262,7 @@ static int create_image(int platform_mode)
 	if (error || hibernation_test(TEST_PLATFORM))
 		goto Platform_finish;
 
+	check_free(GFP_NOWAIT);
 	error = disable_nonboot_cpus();
 	if (error || hibernation_test(TEST_CPUS)
 	    || hibernation_testmode(HIBERNATION_TEST))
diff --git a/kernel/power/power.h b/kernel/power/power.h
index 46c5a26..d2178dc 100644
--- a/kernel/power/power.h
+++ b/kernel/power/power.h
@@ -236,3 +236,53 @@ static inline void suspend_thaw_processes(void)
 {
 }
 #endif
+
+/* An empirical check on the number of free pages */
+static inline int check_free_pages(gfp_t gfp_flags, const char *gfp_name, int order)
+{
+	int ret;
+	int count = 0;
+	void *first = NULL;
+	void **p = &first;
+	unsigned long page;
+
+	/* Allocate free pages into a linked list, headed by "first" */
+	while(count < ((PAGES_FOR_IO + SPARE_PAGES) >> order)) {
+		page = __get_free_pages(gfp_flags|__GFP_NOWARN, order);
+		if (!page)
+			break;
+		*p = (void *)page;
+		p = (void **)page;
+		count++;
+	}
+	*p = NULL;
+
+	ret = count;
+	printk(KERN_INFO
+		"%d %s allocations of order %d are possible\n",
+		count, gfp_name, order);
+
+	/* Free the pages again */
+	p = first;
+	while(p) {
+		page = (unsigned long) p;
+		p = *p;
+		free_pages(page, order);
+		count--;
+	}
+	BUG_ON(count != 0);
+
+	return ret;
+}
+
+static inline void __check_free(gfp_t gfp_flags, const char *gfp_name)
+{
+	int order;
+
+	for (order = 0; order < 3; order++)
+		if (check_free_pages(gfp_flags, gfp_name, order) <= 0)
+			break;
+}
+
+#define check_free(flags) __check_free(flags, #flags)
+
diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
index 36cb168..605b7b7 100644
--- a/kernel/power/snapshot.c
+++ b/kernel/power/snapshot.c
@@ -1261,6 +1261,8 @@ int hibernate_preallocate_memory(void)
 	struct timeval start, stop;
 	int error;
 
+	check_free(GFP_NOWAIT);
+	check_free(GFP_KERNEL);
 	printk(KERN_INFO "PM: Preallocating image memory... ");
 	do_gettimeofday(&start);
 
@@ -1350,7 +1352,10 @@ int hibernate_preallocate_memory(void)
 	 * pages in memory, but we have allocated more.  Release the excessive
 	 * ones now.
 	 */
+	check_free(GFP_NOWAIT);
 	free_unnecessary_pages();
+	check_free(GFP_NOWAIT);
+	check_free(GFP_KERNEL);
 
  out:
 	do_gettimeofday(&stop);

Re: s2disk hang update

[Rafael J. Wysocki]

On Wednesday 24 February 2010, Alan Jenkins wrote:
> On 2/23/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
...
> > My guess is that the preallocated memory pages freed by
> > free_unnecessary_pages() go into a place from where they cannot be taken for
> > subsequent NOIO allocations.  I have no idea why that happens though.
> >
> > To test that theory you can try to change GFP_IOFS to GFP_KERNEL in the
> > calls to clear_gfp_allowed_mask() in kernel/power/hibernate.c (and in
> > kernel/power/suspend.c for completness).
> 
> Effectively forcing GFP_NOWAIT, so the allocation should fail instead
> of hanging?
> 
> It seems to stop the hang, but I don't see any other difference - the
> hibernation process isn't stopped earlier, and I don't get any new
> kernel messages about allocation failures.  I wonder if it's because
> GFP_NOWAIT triggers ALLOC_HARDER.
> 
> I have other evidence which argues for your theory:
> 
> [ successful s2disk, with forced NOIO (but not NOWAIT), and test code
> as attached ]
> 
>  Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.
>  1280 GFP_NOWAIT allocations of order 0 are possible
>  640 GFP_NOWAIT allocations of order 1 are possible
>  320 GFP_NOWAIT allocations of order 2 are possible
> 
> [ note - 1280 pages is the maximum test allocation used here.  The
> test code is only accurate when talking about smaller numbers of free
> pages ]
> 
>  1280 GFP_KERNEL allocations of order 0 are possible
>  640 GFP_KERNEL allocations of order 1 are possible
>  320 GFP_KERNEL allocations of order 2 are possible
> 
>  PM: Preallocating image memory...
>  212 GFP_NOWAIT allocations of order 0 are possible
>  102 GFP_NOWAIT allocations of order 1 are possible
>  50 GFP_NOWAIT allocations of order 2 are possible
> 
>  Freeing all 90083 preallocated pages
>  (and 0 highmem pages, out of 0)
>  190 GFP_NOWAIT allocations of order 0 are possible
>  102 GFP_NOWAIT allocations of order 1 are possible
>  50 GFP_NOWAIT allocations of order 2 are possible
>  1280 GFP_KERNEL allocations of order 0 are possible
>  640 GFP_KERNEL allocations of order 1 are possible
>  320 GFP_KERNEL allocations of order 2 are possible
>  done (allocated 90083 pages)
> 
> It looks like you're right and the freed pages are not accessible with
> GFP_NOWAIT for some reason.

I'd expect this, really.  There only is a limited number of pages you can
allocate with GFP_NOWAIT.

> I also tried a number of test runs with too many applications, and saw this:
> 
> Freeing all 104006 preallocated pages ...
> 65 GFP_NOWAIT allocations of order 0 ...
> 18 GFP_NOWAIT allocations of order 1 ...
> 9 GFP_NOWAIT allocations of order 2 ...
> 0 GFP_KERNEL allocations of order 0 are possible
> ...

Now that's interesting.  We've just freed 104006 pages and we can't allocate
any, so where did all of these freed pages go, actually?

OK, I think I see what the problem is.  Quite embarassing, actually ...

Can you check if the patch below helps?

Rafael

---
 kernel/power/snapshot.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6/kernel/power/snapshot.c
===================================================================
--- linux-2.6.orig/kernel/power/snapshot.c
+++ linux-2.6/kernel/power/snapshot.c
@@ -1181,7 +1181,7 @@ static void free_unnecessary_pages(void)
 
 	memory_bm_position_reset(&copy_bm);
 
-	while (to_free_normal > 0 && to_free_highmem > 0) {
+	while (to_free_normal > 0 || to_free_highmem > 0) {
 		unsigned long pfn = memory_bm_next_pfn(&copy_bm);
 		struct page *page = pfn_to_page(pfn);
 

Re: s2disk hang update

[Rafael J. Wysocki]

On Wednesday 24 February 2010, Alan Jenkins wrote:
> On 2/23/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
...
> > My guess is that the preallocated memory pages freed by
> > free_unnecessary_pages() go into a place from where they cannot be taken for
> > subsequent NOIO allocations.  I have no idea why that happens though.
> >
> > To test that theory you can try to change GFP_IOFS to GFP_KERNEL in the
> > calls to clear_gfp_allowed_mask() in kernel/power/hibernate.c (and in
> > kernel/power/suspend.c for completness).
> 
> Effectively forcing GFP_NOWAIT, so the allocation should fail instead
> of hanging?
> 
> It seems to stop the hang, but I don't see any other difference - the
> hibernation process isn't stopped earlier, and I don't get any new
> kernel messages about allocation failures.  I wonder if it's because
> GFP_NOWAIT triggers ALLOC_HARDER.
> 
> I have other evidence which argues for your theory:
> 
> [ successful s2disk, with forced NOIO (but not NOWAIT), and test code
> as attached ]
> 
>  Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.
>  1280 GFP_NOWAIT allocations of order 0 are possible
>  640 GFP_NOWAIT allocations of order 1 are possible
>  320 GFP_NOWAIT allocations of order 2 are possible
> 
> [ note - 1280 pages is the maximum test allocation used here.  The
> test code is only accurate when talking about smaller numbers of free
> pages ]
> 
>  1280 GFP_KERNEL allocations of order 0 are possible
>  640 GFP_KERNEL allocations of order 1 are possible
>  320 GFP_KERNEL allocations of order 2 are possible
> 
>  PM: Preallocating image memory...
>  212 GFP_NOWAIT allocations of order 0 are possible
>  102 GFP_NOWAIT allocations of order 1 are possible
>  50 GFP_NOWAIT allocations of order 2 are possible
> 
>  Freeing all 90083 preallocated pages
>  (and 0 highmem pages, out of 0)
>  190 GFP_NOWAIT allocations of order 0 are possible
>  102 GFP_NOWAIT allocations of order 1 are possible
>  50 GFP_NOWAIT allocations of order 2 are possible
>  1280 GFP_KERNEL allocations of order 0 are possible
>  640 GFP_KERNEL allocations of order 1 are possible
>  320 GFP_KERNEL allocations of order 2 are possible
>  done (allocated 90083 pages)
> 
> It looks like you're right and the freed pages are not accessible with
> GFP_NOWAIT for some reason.

I'd expect this, really.  There only is a limited number of pages you can
allocate with GFP_NOWAIT.

> I also tried a number of test runs with too many applications, and saw this:
> 
> Freeing all 104006 preallocated pages ...
> 65 GFP_NOWAIT allocations of order 0 ...
> 18 GFP_NOWAIT allocations of order 1 ...
> 9 GFP_NOWAIT allocations of order 2 ...
> 0 GFP_KERNEL allocations of order 0 are possible
> ...

Now that's interesting.  We've just freed 104006 pages and we can't allocate
any, so where did all of these freed pages go, actually?

OK, I think I see what the problem is.  Quite embarassing, actually ...

Can you check if the patch below helps?

Rafael

---
 kernel/power/snapshot.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6/kernel/power/snapshot.c
===================================================================
--- linux-2.6.orig/kernel/power/snapshot.c
+++ linux-2.6/kernel/power/snapshot.c
@@ -1181,7 +1181,7 @@ static void free_unnecessary_pages(void)
 
 	memory_bm_position_reset(&copy_bm);
 
-	while (to_free_normal > 0 && to_free_highmem > 0) {
+	while (to_free_normal > 0 || to_free_highmem > 0) {
 		unsigned long pfn = memory_bm_next_pfn(&copy_bm);
 		struct page *page = pfn_to_page(pfn);
 

Re: s2disk hang update

[Rafael J. Wysocki]

On Wednesday 24 February 2010, Alan Jenkins wrote:
> On 2/23/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
...
> > My guess is that the preallocated memory pages freed by
> > free_unnecessary_pages() go into a place from where they cannot be taken for
> > subsequent NOIO allocations.  I have no idea why that happens though.
> >
> > To test that theory you can try to change GFP_IOFS to GFP_KERNEL in the
> > calls to clear_gfp_allowed_mask() in kernel/power/hibernate.c (and in
> > kernel/power/suspend.c for completness).
> 
> Effectively forcing GFP_NOWAIT, so the allocation should fail instead
> of hanging?
> 
> It seems to stop the hang, but I don't see any other difference - the
> hibernation process isn't stopped earlier, and I don't get any new
> kernel messages about allocation failures.  I wonder if it's because
> GFP_NOWAIT triggers ALLOC_HARDER.
> 
> I have other evidence which argues for your theory:
> 
> [ successful s2disk, with forced NOIO (but not NOWAIT), and test code
> as attached ]
> 
>  Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.
>  1280 GFP_NOWAIT allocations of order 0 are possible
>  640 GFP_NOWAIT allocations of order 1 are possible
>  320 GFP_NOWAIT allocations of order 2 are possible
> 
> [ note - 1280 pages is the maximum test allocation used here.  The
> test code is only accurate when talking about smaller numbers of free
> pages ]
> 
>  1280 GFP_KERNEL allocations of order 0 are possible
>  640 GFP_KERNEL allocations of order 1 are possible
>  320 GFP_KERNEL allocations of order 2 are possible
> 
>  PM: Preallocating image memory...
>  212 GFP_NOWAIT allocations of order 0 are possible
>  102 GFP_NOWAIT allocations of order 1 are possible
>  50 GFP_NOWAIT allocations of order 2 are possible
> 
>  Freeing all 90083 preallocated pages
>  (and 0 highmem pages, out of 0)
>  190 GFP_NOWAIT allocations of order 0 are possible
>  102 GFP_NOWAIT allocations of order 1 are possible
>  50 GFP_NOWAIT allocations of order 2 are possible
>  1280 GFP_KERNEL allocations of order 0 are possible
>  640 GFP_KERNEL allocations of order 1 are possible
>  320 GFP_KERNEL allocations of order 2 are possible
>  done (allocated 90083 pages)
> 
> It looks like you're right and the freed pages are not accessible with
> GFP_NOWAIT for some reason.

I'd expect this, really.  There only is a limited number of pages you can
allocate with GFP_NOWAIT.

> I also tried a number of test runs with too many applications, and saw this:
> 
> Freeing all 104006 preallocated pages ...
> 65 GFP_NOWAIT allocations of order 0 ...
> 18 GFP_NOWAIT allocations of order 1 ...
> 9 GFP_NOWAIT allocations of order 2 ...
> 0 GFP_KERNEL allocations of order 0 are possible
> ...

Now that's interesting.  We've just freed 104006 pages and we can't allocate
any, so where did all of these freed pages go, actually?

OK, I think I see what the problem is.  Quite embarassing, actually ...

Can you check if the patch below helps?

Rafael

---
 kernel/power/snapshot.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6/kernel/power/snapshot.c
===================================================================
--- linux-2.6.orig/kernel/power/snapshot.c
+++ linux-2.6/kernel/power/snapshot.c
@@ -1181,7 +1181,7 @@ static void free_unnecessary_pages(void)
 
 	memory_bm_position_reset(&copy_bm);
 
-	while (to_free_normal > 0 && to_free_highmem > 0) {
+	while (to_free_normal > 0 || to_free_highmem > 0) {
 		unsigned long pfn = memory_bm_next_pfn(&copy_bm);
 		struct page *page = pfn_to_page(pfn);
 

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Re: s2disk hang update

[Alan Jenkins]

On 2/24/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> On Wednesday 24 February 2010, Alan Jenkins wrote:
>> On 2/23/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> ...
>> > My guess is that the preallocated memory pages freed by
>> > free_unnecessary_pages() go into a place from where they cannot be taken
>> > for
>> > subsequent NOIO allocations.  I have no idea why that happens though.
>> >
>> > To test that theory you can try to change GFP_IOFS to GFP_KERNEL in the
>> > calls to clear_gfp_allowed_mask() in kernel/power/hibernate.c (and in
>> > kernel/power/suspend.c for completness).
>>
>> Effectively forcing GFP_NOWAIT, so the allocation should fail instead
>> of hanging?
>>
>> It seems to stop the hang, but I don't see any other difference - the
>> hibernation process isn't stopped earlier, and I don't get any new
>> kernel messages about allocation failures.  I wonder if it's because
>> GFP_NOWAIT triggers ALLOC_HARDER.
>>
>> I have other evidence which argues for your theory:
>>
>> [ successful s2disk, with forced NOIO (but not NOWAIT), and test code
>> as attached ]
>>
>>  Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.
>>  1280 GFP_NOWAIT allocations of order 0 are possible
>>  640 GFP_NOWAIT allocations of order 1 are possible
>>  320 GFP_NOWAIT allocations of order 2 are possible
>>
>> [ note - 1280 pages is the maximum test allocation used here.  The
>> test code is only accurate when talking about smaller numbers of free
>> pages ]
>>
>>  1280 GFP_KERNEL allocations of order 0 are possible
>>  640 GFP_KERNEL allocations of order 1 are possible
>>  320 GFP_KERNEL allocations of order 2 are possible
>>
>>  PM: Preallocating image memory...
>>  212 GFP_NOWAIT allocations of order 0 are possible
>>  102 GFP_NOWAIT allocations of order 1 are possible
>>  50 GFP_NOWAIT allocations of order 2 are possible
>>
>>  Freeing all 90083 preallocated pages
>>  (and 0 highmem pages, out of 0)
>>  190 GFP_NOWAIT allocations of order 0 are possible
>>  102 GFP_NOWAIT allocations of order 1 are possible
>>  50 GFP_NOWAIT allocations of order 2 are possible
>>  1280 GFP_KERNEL allocations of order 0 are possible
>>  640 GFP_KERNEL allocations of order 1 are possible
>>  320 GFP_KERNEL allocations of order 2 are possible
>>  done (allocated 90083 pages)
>>
>> It looks like you're right and the freed pages are not accessible with
>> GFP_NOWAIT for some reason.
>
> I'd expect this, really.  There only is a limited number of pages you can
> allocate with GFP_NOWAIT.
>
>> I also tried a number of test runs with too many applications, and saw
>> this:
>>
>> Freeing all 104006 preallocated pages ...
>> 65 GFP_NOWAIT allocations of order 0 ...
>> 18 GFP_NOWAIT allocations of order 1 ...
>> 9 GFP_NOWAIT allocations of order 2 ...
>> 0 GFP_KERNEL allocations of order 0 are possible
>> ...
>
> Now that's interesting.  We've just freed 104006 pages and we can't allocate
> any, so where did all of these freed pages go, actually?
>
> OK, I think I see what the problem is.  Quite embarassing, actually ...
>
> Can you check if the patch below helps?
>
> Rafael

> -	while (to_free_normal > 0 && to_free_highmem > 0) {
> +	while (to_free_normal > 0 || to_free_highmem > 0) {


Yes, that seems to do it.  No more hangs so far (and I can still
reproduce the hang with too many applications if I un-apply the
patch).

I did see a non-fatal allocation failure though, so I'm still not sure
that the current implementation is strictly correct.

This is without the patch to increase "to_free_normal".  If I get the
allocation failure again, should I try testing the "free 20% extra"
patch?

Many thanks
Alan

Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.
PM: Preallocating image memory...
events/0: page allocation failure. order:0, mode:0xd0
Pid: 6, comm: events/0 Not tainted 2.6.33-rc8eeepc-00165-gecdaf98-dirty #101
Call Trace:
? printk+0xf/0x18
__alloc_pages_nodemask+0x46a/0x4dd
cache_alloc_refill+0x250/0x42d
kmem_cache_alloc+0x70/0xee
acpi_ps_alloc_op+0x4a/0x84
acpi_ps_create_scope_op+0xd/0x1c
acpi_ps_execute_method+0xed/0x29c
acpi_ns_evaluate+0x13b/0x241
acpi_evaluate_object+0x11c/0x243
? trace_hardirqs_on_caller+0x100/0x121
acpi_evaluate_integer+0x30/0x9c
acpi_thermal_get_temperature+0x2d/0x6a [thermal]
thermal_get_temp+0x1d/0x33 [thermal]
thermal_zone_device_update+0x29/0x1ce [thermal_sys]
? worker_thread+0x14b/0x250
thermal_zone_device_check+0xd/0xf [thermal_sys]
worker_thread+0x18d/0x250
? worker_thread+0x14b/0x250
? thermal_zone_device_check+0x0/0xf [thermal_sys]
? autoremove_wake_function+0x0/0x2f
? worker_thread+0x0/0x250
kthread+0x6a/0x6f
? kthread+0x0/0x6f
kernel_thread_helper+0x6/0x1a
Mem-Info:
DMA per-cpu:
CPU    0: hi:    0, btch:   1 usd:   0
Normal per-cpu:
CPU    0: hi:  186, btch:  31 usd: 192
active_anon:4987 inactive_anon:5012 isolated_anon:0
 active_file:34 inactive_file:86 isolated_file:0
 unevictable:1042 dirty:0 writeback:0 unstable:0
 free:1188 slab_reclaimable:1510 slab_unreclaimable:2338
 mapped:1975 shmem:7985 pagetables:894 bounce:0
DMA free:2016kB min:88kB low:108kB high:132kB active_anon:0kB
inactive_anon:12kB active_file:8kB inactive_file:0kB unevictable:40kB
isolated(anon):0kB isolated(file):0kB present:15804kB mlocked:40kB
dirty:0kB writeback:0kB mapped:48kB shmem:0kB slab_reclaimable:8kB
slab_unreclaimable:4kB kernel_stack:0kB pagetables:8kB unstable:0kB
bounce:0kB writeback_tmp:0kB pages_scanned:3 all_unreclaimable? no
lowmem_reserve[]: 0 483 483 483
Normal free:2736kB min:2764kB low:3452kB high:4144kB
active_anon:19948kB inactive_anon:20036kB active_file:128kB
inactive_file:344kB unevictable:4128kB isolated(anon):0kB
isolated(file):0kB present:495300kB mlocked:4128kB dirty:0kB
writeback:0kB mapped:7852kB shmem:31940kB slab_reclaimable:6032kB
slab_unreclaimable:9348kB kernel_stack:920kB pagetables:3568kB
unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:20672
all_unreclaimable? no
lowmem_reserve[]: 0 0 0 0
DMA: 0*4kB 0*8kB 0*16kB 1*32kB 1*64kB 1*128kB 1*256kB 1*512kB 1*1024kB
0*2048kB 0*4096kB = 2016kB
Normal: 684*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB
0*1024kB 0*2048kB 0*4096kB = 2736kB
9036 total pagecache pages
0 pages in swap cache
Swap cache stats: add 132152, delete 132152, find 22472/27086
Free swap  = 63644kB
Total swap = 358392kB
128880 pages RAM
0 pages HighMem
3743 pages reserved
20404 pages shared
116286 pages non-shared
hda-intel: IRQ timing workaround is activated for card #0. Suggest a
bigger bdl_pos_adj.
Thermal: failed to read out thermal zone 0
done (allocated 105868 pages)
PM: Allocated 423472 kbytes in 25.48 seconds (16.61 MB/s)
atl2 0000:03:00.0: PCI INT A disabled
ata_piix 0000:00:1f.2: PCI INT B disabled
HDA Intel 0000:00:1b.0: PCI INT A disabled
PM: freeze of devices complete after 163.921 msecs
PM: late freeze of devices complete after 2.951 msecs
Disabling non-boot CPUs ...

Re: s2disk hang update

[Alan Jenkins]

On 2/24/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> On Wednesday 24 February 2010, Alan Jenkins wrote:
>> On 2/23/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> ...
>> > My guess is that the preallocated memory pages freed by
>> > free_unnecessary_pages() go into a place from where they cannot be taken
>> > for
>> > subsequent NOIO allocations.  I have no idea why that happens though.
>> >
>> > To test that theory you can try to change GFP_IOFS to GFP_KERNEL in the
>> > calls to clear_gfp_allowed_mask() in kernel/power/hibernate.c (and in
>> > kernel/power/suspend.c for completness).
>>
>> Effectively forcing GFP_NOWAIT, so the allocation should fail instead
>> of hanging?
>>
>> It seems to stop the hang, but I don't see any other difference - the
>> hibernation process isn't stopped earlier, and I don't get any new
>> kernel messages about allocation failures.  I wonder if it's because
>> GFP_NOWAIT triggers ALLOC_HARDER.
>>
>> I have other evidence which argues for your theory:
>>
>> [ successful s2disk, with forced NOIO (but not NOWAIT), and test code
>> as attached ]
>>
>>  Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.
>>  1280 GFP_NOWAIT allocations of order 0 are possible
>>  640 GFP_NOWAIT allocations of order 1 are possible
>>  320 GFP_NOWAIT allocations of order 2 are possible
>>
>> [ note - 1280 pages is the maximum test allocation used here.  The
>> test code is only accurate when talking about smaller numbers of free
>> pages ]
>>
>>  1280 GFP_KERNEL allocations of order 0 are possible
>>  640 GFP_KERNEL allocations of order 1 are possible
>>  320 GFP_KERNEL allocations of order 2 are possible
>>
>>  PM: Preallocating image memory...
>>  212 GFP_NOWAIT allocations of order 0 are possible
>>  102 GFP_NOWAIT allocations of order 1 are possible
>>  50 GFP_NOWAIT allocations of order 2 are possible
>>
>>  Freeing all 90083 preallocated pages
>>  (and 0 highmem pages, out of 0)
>>  190 GFP_NOWAIT allocations of order 0 are possible
>>  102 GFP_NOWAIT allocations of order 1 are possible
>>  50 GFP_NOWAIT allocations of order 2 are possible
>>  1280 GFP_KERNEL allocations of order 0 are possible
>>  640 GFP_KERNEL allocations of order 1 are possible
>>  320 GFP_KERNEL allocations of order 2 are possible
>>  done (allocated 90083 pages)
>>
>> It looks like you're right and the freed pages are not accessible with
>> GFP_NOWAIT for some reason.
>
> I'd expect this, really.  There only is a limited number of pages you can
> allocate with GFP_NOWAIT.
>
>> I also tried a number of test runs with too many applications, and saw
>> this:
>>
>> Freeing all 104006 preallocated pages ...
>> 65 GFP_NOWAIT allocations of order 0 ...
>> 18 GFP_NOWAIT allocations of order 1 ...
>> 9 GFP_NOWAIT allocations of order 2 ...
>> 0 GFP_KERNEL allocations of order 0 are possible
>> ...
>
> Now that's interesting.  We've just freed 104006 pages and we can't allocate
> any, so where did all of these freed pages go, actually?
>
> OK, I think I see what the problem is.  Quite embarassing, actually ...
>
> Can you check if the patch below helps?
>
> Rafael

> -	while (to_free_normal > 0 && to_free_highmem > 0) {
> +	while (to_free_normal > 0 || to_free_highmem > 0) {


Yes, that seems to do it.  No more hangs so far (and I can still
reproduce the hang with too many applications if I un-apply the
patch).

I did see a non-fatal allocation failure though, so I'm still not sure
that the current implementation is strictly correct.

This is without the patch to increase "to_free_normal".  If I get the
allocation failure again, should I try testing the "free 20% extra"
patch?

Many thanks
Alan

Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.
PM: Preallocating image memory...
events/0: page allocation failure. order:0, mode:0xd0
Pid: 6, comm: events/0 Not tainted 2.6.33-rc8eeepc-00165-gecdaf98-dirty #101
Call Trace:
? printk+0xf/0x18
__alloc_pages_nodemask+0x46a/0x4dd
cache_alloc_refill+0x250/0x42d
kmem_cache_alloc+0x70/0xee
acpi_ps_alloc_op+0x4a/0x84
acpi_ps_create_scope_op+0xd/0x1c
acpi_ps_execute_method+0xed/0x29c
acpi_ns_evaluate+0x13b/0x241
acpi_evaluate_object+0x11c/0x243
? trace_hardirqs_on_caller+0x100/0x121
acpi_evaluate_integer+0x30/0x9c
acpi_thermal_get_temperature+0x2d/0x6a [thermal]
thermal_get_temp+0x1d/0x33 [thermal]
thermal_zone_device_update+0x29/0x1ce [thermal_sys]
? worker_thread+0x14b/0x250
thermal_zone_device_check+0xd/0xf [thermal_sys]
worker_thread+0x18d/0x250
? worker_thread+0x14b/0x250
? thermal_zone_device_check+0x0/0xf [thermal_sys]
? autoremove_wake_function+0x0/0x2f
? worker_thread+0x0/0x250
kthread+0x6a/0x6f
? kthread+0x0/0x6f
kernel_thread_helper+0x6/0x1a
Mem-Info:
DMA per-cpu:
CPU    0: hi:    0, btch:   1 usd:   0
Normal per-cpu:
CPU    0: hi:  186, btch:  31 usd: 192
active_anon:4987 inactive_anon:5012 isolated_anon:0
 active_file:34 inactive_file:86 isolated_file:0
 unevictable:1042 dirty:0 writeback:0 unstable:0
 free:1188 slab_reclaimable:1510 slab_unreclaimable:2338
 mapped:1975 shmem:7985 pagetables:894 bounce:0
DMA free:2016kB min:88kB low:108kB high:132kB active_anon:0kB
inactive_anon:12kB active_file:8kB inactive_file:0kB unevictable:40kB
isolated(anon):0kB isolated(file):0kB present:15804kB mlocked:40kB
dirty:0kB writeback:0kB mapped:48kB shmem:0kB slab_reclaimable:8kB
slab_unreclaimable:4kB kernel_stack:0kB pagetables:8kB unstable:0kB
bounce:0kB writeback_tmp:0kB pages_scanned:3 all_unreclaimable? no
lowmem_reserve[]: 0 483 483 483
Normal free:2736kB min:2764kB low:3452kB high:4144kB
active_anon:19948kB inactive_anon:20036kB active_file:128kB
inactive_file:344kB unevictable:4128kB isolated(anon):0kB
isolated(file):0kB present:495300kB mlocked:4128kB dirty:0kB
writeback:0kB mapped:7852kB shmem:31940kB slab_reclaimable:6032kB
slab_unreclaimable:9348kB kernel_stack:920kB pagetables:3568kB
unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:20672
all_unreclaimable? no
lowmem_reserve[]: 0 0 0 0
DMA: 0*4kB 0*8kB 0*16kB 1*32kB 1*64kB 1*128kB 1*256kB 1*512kB 1*1024kB
0*2048kB 0*4096kB = 2016kB
Normal: 684*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB
0*1024kB 0*2048kB 0*4096kB = 2736kB
9036 total pagecache pages
0 pages in swap cache
Swap cache stats: add 132152, delete 132152, find 22472/27086
Free swap  = 63644kB
Total swap = 358392kB
128880 pages RAM
0 pages HighMem
3743 pages reserved
20404 pages shared
116286 pages non-shared
hda-intel: IRQ timing workaround is activated for card #0. Suggest a
bigger bdl_pos_adj.
Thermal: failed to read out thermal zone 0
done (allocated 105868 pages)
PM: Allocated 423472 kbytes in 25.48 seconds (16.61 MB/s)
atl2 0000:03:00.0: PCI INT A disabled
ata_piix 0000:00:1f.2: PCI INT B disabled
HDA Intel 0000:00:1b.0: PCI INT A disabled
PM: freeze of devices complete after 163.921 msecs
PM: late freeze of devices complete after 2.951 msecs
Disabling non-boot CPUs ...

Re: s2disk hang update

[Alan Jenkins]

On 2/24/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> On Wednesday 24 February 2010, Alan Jenkins wrote:
>> On 2/23/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> ...
>> > My guess is that the preallocated memory pages freed by
>> > free_unnecessary_pages() go into a place from where they cannot be taken
>> > for
>> > subsequent NOIO allocations.  I have no idea why that happens though.
>> >
>> > To test that theory you can try to change GFP_IOFS to GFP_KERNEL in the
>> > calls to clear_gfp_allowed_mask() in kernel/power/hibernate.c (and in
>> > kernel/power/suspend.c for completness).
>>
>> Effectively forcing GFP_NOWAIT, so the allocation should fail instead
>> of hanging?
>>
>> It seems to stop the hang, but I don't see any other difference - the
>> hibernation process isn't stopped earlier, and I don't get any new
>> kernel messages about allocation failures.  I wonder if it's because
>> GFP_NOWAIT triggers ALLOC_HARDER.
>>
>> I have other evidence which argues for your theory:
>>
>> [ successful s2disk, with forced NOIO (but not NOWAIT), and test code
>> as attached ]
>>
>>  Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.
>>  1280 GFP_NOWAIT allocations of order 0 are possible
>>  640 GFP_NOWAIT allocations of order 1 are possible
>>  320 GFP_NOWAIT allocations of order 2 are possible
>>
>> [ note - 1280 pages is the maximum test allocation used here.  The
>> test code is only accurate when talking about smaller numbers of free
>> pages ]
>>
>>  1280 GFP_KERNEL allocations of order 0 are possible
>>  640 GFP_KERNEL allocations of order 1 are possible
>>  320 GFP_KERNEL allocations of order 2 are possible
>>
>>  PM: Preallocating image memory...
>>  212 GFP_NOWAIT allocations of order 0 are possible
>>  102 GFP_NOWAIT allocations of order 1 are possible
>>  50 GFP_NOWAIT allocations of order 2 are possible
>>
>>  Freeing all 90083 preallocated pages
>>  (and 0 highmem pages, out of 0)
>>  190 GFP_NOWAIT allocations of order 0 are possible
>>  102 GFP_NOWAIT allocations of order 1 are possible
>>  50 GFP_NOWAIT allocations of order 2 are possible
>>  1280 GFP_KERNEL allocations of order 0 are possible
>>  640 GFP_KERNEL allocations of order 1 are possible
>>  320 GFP_KERNEL allocations of order 2 are possible
>>  done (allocated 90083 pages)
>>
>> It looks like you're right and the freed pages are not accessible with
>> GFP_NOWAIT for some reason.
>
> I'd expect this, really.  There only is a limited number of pages you can
> allocate with GFP_NOWAIT.
>
>> I also tried a number of test runs with too many applications, and saw
>> this:
>>
>> Freeing all 104006 preallocated pages ...
>> 65 GFP_NOWAIT allocations of order 0 ...
>> 18 GFP_NOWAIT allocations of order 1 ...
>> 9 GFP_NOWAIT allocations of order 2 ...
>> 0 GFP_KERNEL allocations of order 0 are possible
>> ...
>
> Now that's interesting.  We've just freed 104006 pages and we can't allocate
> any, so where did all of these freed pages go, actually?
>
> OK, I think I see what the problem is.  Quite embarassing, actually ...
>
> Can you check if the patch below helps?
>
> Rafael

> -	while (to_free_normal > 0 && to_free_highmem > 0) {
> +	while (to_free_normal > 0 || to_free_highmem > 0) {


Yes, that seems to do it.  No more hangs so far (and I can still
reproduce the hang with too many applications if I un-apply the
patch).

I did see a non-fatal allocation failure though, so I'm still not sure
that the current implementation is strictly correct.

This is without the patch to increase "to_free_normal".  If I get the
allocation failure again, should I try testing the "free 20% extra"
patch?

Many thanks
Alan

Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.
PM: Preallocating image memory...
events/0: page allocation failure. order:0, mode:0xd0
Pid: 6, comm: events/0 Not tainted 2.6.33-rc8eeepc-00165-gecdaf98-dirty #101
Call Trace:
? printk+0xf/0x18
__alloc_pages_nodemask+0x46a/0x4dd
cache_alloc_refill+0x250/0x42d
kmem_cache_alloc+0x70/0xee
acpi_ps_alloc_op+0x4a/0x84
acpi_ps_create_scope_op+0xd/0x1c
acpi_ps_execute_method+0xed/0x29c
acpi_ns_evaluate+0x13b/0x241
acpi_evaluate_object+0x11c/0x243
? trace_hardirqs_on_caller+0x100/0x121
acpi_evaluate_integer+0x30/0x9c
acpi_thermal_get_temperature+0x2d/0x6a [thermal]
thermal_get_temp+0x1d/0x33 [thermal]
thermal_zone_device_update+0x29/0x1ce [thermal_sys]
? worker_thread+0x14b/0x250
thermal_zone_device_check+0xd/0xf [thermal_sys]
worker_thread+0x18d/0x250
? worker_thread+0x14b/0x250
? thermal_zone_device_check+0x0/0xf [thermal_sys]
? autoremove_wake_function+0x0/0x2f
? worker_thread+0x0/0x250
kthread+0x6a/0x6f
? kthread+0x0/0x6f
kernel_thread_helper+0x6/0x1a
Mem-Info:
DMA per-cpu:
CPU    0: hi:    0, btch:   1 usd:   0
Normal per-cpu:
CPU    0: hi:  186, btch:  31 usd: 192
active_anon:4987 inactive_anon:5012 isolated_anon:0
 active_file:34 inactive_file:86 isolated_file:0
 unevictable:1042 dirty:0 writeback:0 unstable:0
 free:1188 slab_reclaimable:1510 slab_unreclaimable:2338
 mapped:1975 shmem:7985 pagetables:894 bounce:0
DMA free:2016kB min:88kB low:108kB high:132kB active_anon:0kB
inactive_anon:12kB active_file:8kB inactive_file:0kB unevictable:40kB
isolated(anon):0kB isolated(file):0kB present:15804kB mlocked:40kB
dirty:0kB writeback:0kB mapped:48kB shmem:0kB slab_reclaimable:8kB
slab_unreclaimable:4kB kernel_stack:0kB pagetables:8kB unstable:0kB
bounce:0kB writeback_tmp:0kB pages_scanned:3 all_unreclaimable? no
lowmem_reserve[]: 0 483 483 483
Normal free:2736kB min:2764kB low:3452kB high:4144kB
active_anon:19948kB inactive_anon:20036kB active_file:128kB
inactive_file:344kB unevictable:4128kB isolated(anon):0kB
isolated(file):0kB present:495300kB mlocked:4128kB dirty:0kB
writeback:0kB mapped:7852kB shmem:31940kB slab_reclaimable:6032kB
slab_unreclaimable:9348kB kernel_stack:920kB pagetables:3568kB
unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:20672
all_unreclaimable? no
lowmem_reserve[]: 0 0 0 0
DMA: 0*4kB 0*8kB 0*16kB 1*32kB 1*64kB 1*128kB 1*256kB 1*512kB 1*1024kB
0*2048kB 0*4096kB = 2016kB
Normal: 684*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB
0*1024kB 0*2048kB 0*4096kB = 2736kB
9036 total pagecache pages
0 pages in swap cache
Swap cache stats: add 132152, delete 132152, find 22472/27086
Free swap  = 63644kB
Total swap = 358392kB
128880 pages RAM
0 pages HighMem
3743 pages reserved
20404 pages shared
116286 pages non-shared
hda-intel: IRQ timing workaround is activated for card #0. Suggest a
bigger bdl_pos_adj.
Thermal: failed to read out thermal zone 0
done (allocated 105868 pages)
PM: Allocated 423472 kbytes in 25.48 seconds (16.61 MB/s)
atl2 0000:03:00.0: PCI INT A disabled
ata_piix 0000:00:1f.2: PCI INT B disabled
HDA Intel 0000:00:1b.0: PCI INT A disabled
PM: freeze of devices complete after 163.921 msecs
PM: late freeze of devices complete after 2.951 msecs
Disabling non-boot CPUs ...

--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org.  For more info on Linux MM,
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Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>

Re: s2disk hang update

[Rafael J. Wysocki]

On Thursday 25 February 2010, Alan Jenkins wrote:
> On 2/24/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> > On Wednesday 24 February 2010, Alan Jenkins wrote:
...
> 
> > -	while (to_free_normal > 0 && to_free_highmem > 0) {
> > +	while (to_free_normal > 0 || to_free_highmem > 0) {
> 
> Yes, that seems to do it.  No more hangs so far (and I can still
> reproduce the hang with too many applications if I un-apply the
> patch).

OK, great.  Is this with or without the NOIO-enforcing patch?

> I did see a non-fatal allocation failure though, so I'm still not sure
> that the current implementation is strictly correct.
> 
> This is without the patch to increase "to_free_normal".  If I get the
> allocation failure again, should I try testing the "free 20% extra"
> patch?

Either that or try to increase SPARE_PAGES.  That should actually work with
the last patch applied. :-)

Rafael

Re: s2disk hang update

[Rafael J. Wysocki]

On Thursday 25 February 2010, Alan Jenkins wrote:
> On 2/24/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> > On Wednesday 24 February 2010, Alan Jenkins wrote:
...
> 
> > -	while (to_free_normal > 0 && to_free_highmem > 0) {
> > +	while (to_free_normal > 0 || to_free_highmem > 0) {
> 
> Yes, that seems to do it.  No more hangs so far (and I can still
> reproduce the hang with too many applications if I un-apply the
> patch).

OK, great.  Is this with or without the NOIO-enforcing patch?

> I did see a non-fatal allocation failure though, so I'm still not sure
> that the current implementation is strictly correct.
> 
> This is without the patch to increase "to_free_normal".  If I get the
> allocation failure again, should I try testing the "free 20% extra"
> patch?

Either that or try to increase SPARE_PAGES.  That should actually work with
the last patch applied. :-)

Rafael

Re: s2disk hang update

[Rafael J. Wysocki]

On Thursday 25 February 2010, Alan Jenkins wrote:
> On 2/24/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> > On Wednesday 24 February 2010, Alan Jenkins wrote:
...
> 
> > -	while (to_free_normal > 0 && to_free_highmem > 0) {
> > +	while (to_free_normal > 0 || to_free_highmem > 0) {
> 
> Yes, that seems to do it.  No more hangs so far (and I can still
> reproduce the hang with too many applications if I un-apply the
> patch).

OK, great.  Is this with or without the NOIO-enforcing patch?

> I did see a non-fatal allocation failure though, so I'm still not sure
> that the current implementation is strictly correct.
> 
> This is without the patch to increase "to_free_normal".  If I get the
> allocation failure again, should I try testing the "free 20% extra"
> patch?

Either that or try to increase SPARE_PAGES.  That should actually work with
the last patch applied. :-)

Rafael

Re: s2disk hang update

[Rafael J. Wysocki]

On Thursday 25 February 2010, Alan Jenkins wrote:
> On 2/24/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> > On Wednesday 24 February 2010, Alan Jenkins wrote:
...
> 
> > -	while (to_free_normal > 0 && to_free_highmem > 0) {
> > +	while (to_free_normal > 0 || to_free_highmem > 0) {
> 
> Yes, that seems to do it.  No more hangs so far (and I can still
> reproduce the hang with too many applications if I un-apply the
> patch).

OK, great.  Is this with or without the NOIO-enforcing patch?

> I did see a non-fatal allocation failure though, so I'm still not sure
> that the current implementation is strictly correct.
> 
> This is without the patch to increase "to_free_normal".  If I get the
> allocation failure again, should I try testing the "free 20% extra"
> patch?

Either that or try to increase SPARE_PAGES.  That should actually work with
the last patch applied. :-)

Rafael

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To unsubscribe, send a message with 'unsubscribe linux-mm' in
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Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>

Re: s2disk hang update

[Alan Jenkins]

On 2/25/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> On Thursday 25 February 2010, Alan Jenkins wrote:
>> On 2/24/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> > On Wednesday 24 February 2010, Alan Jenkins wrote:
> ...
>>
>> > -	while (to_free_normal > 0 && to_free_highmem > 0) {
>> > +	while (to_free_normal > 0 || to_free_highmem > 0) {
>>
>> Yes, that seems to do it.  No more hangs so far (and I can still
>> reproduce the hang with too many applications if I un-apply the
>> patch).
>
> OK, great.  Is this with or without the NOIO-enforcing patch?

With.

>> I did see a non-fatal allocation failure though, so I'm still not sure
>> that the current implementation is strictly correct.
>>
>> This is without the patch to increase "to_free_normal".  If I get the
>> allocation failure again, should I try testing the "free 20% extra"
>> patch?
>
> Either that or try to increase SPARE_PAGES.  That should actually work with
> the last patch applied. :-)
>
> Rafael

<grin>, OK.

Re: s2disk hang update

[Alan Jenkins]

On 2/25/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> On Thursday 25 February 2010, Alan Jenkins wrote:
>> On 2/24/10, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
>> > On Wednesday 24 February 2010, Alan Jenkins wrote:
> ...
>>
>> > -	while (to_free_normal > 0 && to_free_highmem > 0) {
>> > +	while (to_free_normal > 0 || to_free_highmem > 0) {
>>
>> Yes, that seems to do it.  No more hangs so far (and I can still
>> reproduce the hang with too many applications if I un-apply the
>> patch).
>
> OK, great.  Is this with or without the NOIO-enforcing patch?

With.

>> I did see a non-fatal allocation failure though, so I'm still not sure
>> that the current implementation is strictly correct.
>>
>> This is without the patch to increase "to_free_normal".  If I get the
>> allocation failure again, should I try testing the "free 20% extra"
>> patch?
>
> Either that or try to increase SPARE_PAGES.  That should actually work with
> the last patch applied. :-)
>
> Rafael

<grin>, OK.

Re: s2disk hang update

[Alan Jenkins]

On 2/25/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> On Thursday 25 February 2010, Alan Jenkins wrote:
>> On 2/24/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> > On Wednesday 24 February 2010, Alan Jenkins wrote:
> ...
>>
>> > -	while (to_free_normal > 0 && to_free_highmem > 0) {
>> > +	while (to_free_normal > 0 || to_free_highmem > 0) {
>>
>> Yes, that seems to do it.  No more hangs so far (and I can still
>> reproduce the hang with too many applications if I un-apply the
>> patch).
>
> OK, great.  Is this with or without the NOIO-enforcing patch?

With.

>> I did see a non-fatal allocation failure though, so I'm still not sure
>> that the current implementation is strictly correct.
>>
>> This is without the patch to increase "to_free_normal".  If I get the
>> allocation failure again, should I try testing the "free 20% extra"
>> patch?
>
> Either that or try to increase SPARE_PAGES.  That should actually work with
> the last patch applied. :-)
>
> Rafael

<grin>, OK.

--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
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see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>

Re: s2disk hang update

[Alan Jenkins]

On 2/25/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> On Thursday 25 February 2010, Alan Jenkins wrote:
>> On 2/24/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> > On Wednesday 24 February 2010, Alan Jenkins wrote:
> ...
>>
>> > -	while (to_free_normal > 0 && to_free_highmem > 0) {
>> > +	while (to_free_normal > 0 || to_free_highmem > 0) {
>>
>> Yes, that seems to do it.  No more hangs so far (and I can still
>> reproduce the hang with too many applications if I un-apply the
>> patch).
>
> OK, great.  Is this with or without the NOIO-enforcing patch?

With.

>> I did see a non-fatal allocation failure though, so I'm still not sure
>> that the current implementation is strictly correct.
>>
>> This is without the patch to increase "to_free_normal".  If I get the
>> allocation failure again, should I try testing the "free 20% extra"
>> patch?
>
> Either that or try to increase SPARE_PAGES.  That should actually work with
> the last patch applied. :-)
>
> Rafael

<grin>, OK.

Re: s2disk hang update

[Alan Jenkins]

On 2/24/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> On Wednesday 24 February 2010, Alan Jenkins wrote:
>> On 2/23/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> ...
>> > My guess is that the preallocated memory pages freed by
>> > free_unnecessary_pages() go into a place from where they cannot be taken
>> > for
>> > subsequent NOIO allocations.  I have no idea why that happens though.
>> >
>> > To test that theory you can try to change GFP_IOFS to GFP_KERNEL in the
>> > calls to clear_gfp_allowed_mask() in kernel/power/hibernate.c (and in
>> > kernel/power/suspend.c for completness).
>>
>> Effectively forcing GFP_NOWAIT, so the allocation should fail instead
>> of hanging?
>>
>> It seems to stop the hang, but I don't see any other difference - the
>> hibernation process isn't stopped earlier, and I don't get any new
>> kernel messages about allocation failures.  I wonder if it's because
>> GFP_NOWAIT triggers ALLOC_HARDER.
>>
>> I have other evidence which argues for your theory:
>>
>> [ successful s2disk, with forced NOIO (but not NOWAIT), and test code
>> as attached ]
>>
>>  Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.
>>  1280 GFP_NOWAIT allocations of order 0 are possible
>>  640 GFP_NOWAIT allocations of order 1 are possible
>>  320 GFP_NOWAIT allocations of order 2 are possible
>>
>> [ note - 1280 pages is the maximum test allocation used here.  The
>> test code is only accurate when talking about smaller numbers of free
>> pages ]
>>
>>  1280 GFP_KERNEL allocations of order 0 are possible
>>  640 GFP_KERNEL allocations of order 1 are possible
>>  320 GFP_KERNEL allocations of order 2 are possible
>>
>>  PM: Preallocating image memory...
>>  212 GFP_NOWAIT allocations of order 0 are possible
>>  102 GFP_NOWAIT allocations of order 1 are possible
>>  50 GFP_NOWAIT allocations of order 2 are possible
>>
>>  Freeing all 90083 preallocated pages
>>  (and 0 highmem pages, out of 0)
>>  190 GFP_NOWAIT allocations of order 0 are possible
>>  102 GFP_NOWAIT allocations of order 1 are possible
>>  50 GFP_NOWAIT allocations of order 2 are possible
>>  1280 GFP_KERNEL allocations of order 0 are possible
>>  640 GFP_KERNEL allocations of order 1 are possible
>>  320 GFP_KERNEL allocations of order 2 are possible
>>  done (allocated 90083 pages)
>>
>> It looks like you're right and the freed pages are not accessible with
>> GFP_NOWAIT for some reason.
>
> I'd expect this, really.  There only is a limited number of pages you can
> allocate with GFP_NOWAIT.
>
>> I also tried a number of test runs with too many applications, and saw
>> this:
>>
>> Freeing all 104006 preallocated pages ...
>> 65 GFP_NOWAIT allocations of order 0 ...
>> 18 GFP_NOWAIT allocations of order 1 ...
>> 9 GFP_NOWAIT allocations of order 2 ...
>> 0 GFP_KERNEL allocations of order 0 are possible
>> ...
>
> Now that's interesting.  We've just freed 104006 pages and we can't allocate
> any, so where did all of these freed pages go, actually?
>
> OK, I think I see what the problem is.  Quite embarassing, actually ...
>
> Can you check if the patch below helps?
>
> Rafael

> -	while (to_free_normal > 0 && to_free_highmem > 0) {
> +	while (to_free_normal > 0 || to_free_highmem > 0) {


Yes, that seems to do it.  No more hangs so far (and I can still
reproduce the hang with too many applications if I un-apply the
patch).

I did see a non-fatal allocation failure though, so I'm still not sure
that the current implementation is strictly correct.

This is without the patch to increase "to_free_normal".  If I get the
allocation failure again, should I try testing the "free 20% extra"
patch?

Many thanks
Alan

Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.
PM: Preallocating image memory...
events/0: page allocation failure. order:0, mode:0xd0
Pid: 6, comm: events/0 Not tainted 2.6.33-rc8eeepc-00165-gecdaf98-dirty #101
Call Trace:
? printk+0xf/0x18
__alloc_pages_nodemask+0x46a/0x4dd
cache_alloc_refill+0x250/0x42d
kmem_cache_alloc+0x70/0xee
acpi_ps_alloc_op+0x4a/0x84
acpi_ps_create_scope_op+0xd/0x1c
acpi_ps_execute_method+0xed/0x29c
acpi_ns_evaluate+0x13b/0x241
acpi_evaluate_object+0x11c/0x243
? trace_hardirqs_on_caller+0x100/0x121
acpi_evaluate_integer+0x30/0x9c
acpi_thermal_get_temperature+0x2d/0x6a [thermal]
thermal_get_temp+0x1d/0x33 [thermal]
thermal_zone_device_update+0x29/0x1ce [thermal_sys]
? worker_thread+0x14b/0x250
thermal_zone_device_check+0xd/0xf [thermal_sys]
worker_thread+0x18d/0x250
? worker_thread+0x14b/0x250
? thermal_zone_device_check+0x0/0xf [thermal_sys]
? autoremove_wake_function+0x0/0x2f
? worker_thread+0x0/0x250
kthread+0x6a/0x6f
? kthread+0x0/0x6f
kernel_thread_helper+0x6/0x1a
Mem-Info:
DMA per-cpu:
CPU    0: hi:    0, btch:   1 usd:   0
Normal per-cpu:
CPU    0: hi:  186, btch:  31 usd: 192
active_anon:4987 inactive_anon:5012 isolated_anon:0
 active_file:34 inactive_file:86 isolated_file:0
 unevictable:1042 dirty:0 writeback:0 unstable:0
 free:1188 slab_reclaimable:1510 slab_unreclaimable:2338
 mapped:1975 shmem:7985 pagetables:894 bounce:0
DMA free:2016kB min:88kB low:108kB high:132kB active_anon:0kB
inactive_anon:12kB active_file:8kB inactive_file:0kB unevictable:40kB
isolated(anon):0kB isolated(file):0kB present:15804kB mlocked:40kB
dirty:0kB writeback:0kB mapped:48kB shmem:0kB slab_reclaimable:8kB
slab_unreclaimable:4kB kernel_stack:0kB pagetables:8kB unstable:0kB
bounce:0kB writeback_tmp:0kB pages_scanned:3 all_unreclaimable? no
lowmem_reserve[]: 0 483 483 483
Normal free:2736kB min:2764kB low:3452kB high:4144kB
active_anon:19948kB inactive_anon:20036kB active_file:128kB
inactive_file:344kB unevictable:4128kB isolated(anon):0kB
isolated(file):0kB present:495300kB mlocked:4128kB dirty:0kB
writeback:0kB mapped:7852kB shmem:31940kB slab_reclaimable:6032kB
slab_unreclaimable:9348kB kernel_stack:920kB pagetables:3568kB
unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:20672
all_unreclaimable? no
lowmem_reserve[]: 0 0 0 0
DMA: 0*4kB 0*8kB 0*16kB 1*32kB 1*64kB 1*128kB 1*256kB 1*512kB 1*1024kB
0*2048kB 0*4096kB = 2016kB
Normal: 684*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB
0*1024kB 0*2048kB 0*4096kB = 2736kB
9036 total pagecache pages
0 pages in swap cache
Swap cache stats: add 132152, delete 132152, find 22472/27086
Free swap  = 63644kB
Total swap = 358392kB
128880 pages RAM
0 pages HighMem
3743 pages reserved
20404 pages shared
116286 pages non-shared
hda-intel: IRQ timing workaround is activated for card #0. Suggest a
bigger bdl_pos_adj.
Thermal: failed to read out thermal zone 0
done (allocated 105868 pages)
PM: Allocated 423472 kbytes in 25.48 seconds (16.61 MB/s)
atl2 0000:03:00.0: PCI INT A disabled
ata_piix 0000:00:1f.2: PCI INT B disabled
HDA Intel 0000:00:1b.0: PCI INT A disabled
PM: freeze of devices complete after 163.921 msecs
PM: late freeze of devices complete after 2.951 msecs
Disabling non-boot CPUs ...

Re: s2disk hang update

[Rafael J. Wysocki]

On Wednesday 24 February 2010, Alan Jenkins wrote:
> On 2/23/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
...
> > My guess is that the preallocated memory pages freed by
> > free_unnecessary_pages() go into a place from where they cannot be taken for
> > subsequent NOIO allocations.  I have no idea why that happens though.
> >
> > To test that theory you can try to change GFP_IOFS to GFP_KERNEL in the
> > calls to clear_gfp_allowed_mask() in kernel/power/hibernate.c (and in
> > kernel/power/suspend.c for completness).
> 
> Effectively forcing GFP_NOWAIT, so the allocation should fail instead
> of hanging?
> 
> It seems to stop the hang, but I don't see any other difference - the
> hibernation process isn't stopped earlier, and I don't get any new
> kernel messages about allocation failures.  I wonder if it's because
> GFP_NOWAIT triggers ALLOC_HARDER.
> 
> I have other evidence which argues for your theory:
> 
> [ successful s2disk, with forced NOIO (but not NOWAIT), and test code
> as attached ]
> 
>  Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.
>  1280 GFP_NOWAIT allocations of order 0 are possible
>  640 GFP_NOWAIT allocations of order 1 are possible
>  320 GFP_NOWAIT allocations of order 2 are possible
> 
> [ note - 1280 pages is the maximum test allocation used here.  The
> test code is only accurate when talking about smaller numbers of free
> pages ]
> 
>  1280 GFP_KERNEL allocations of order 0 are possible
>  640 GFP_KERNEL allocations of order 1 are possible
>  320 GFP_KERNEL allocations of order 2 are possible
> 
>  PM: Preallocating image memory...
>  212 GFP_NOWAIT allocations of order 0 are possible
>  102 GFP_NOWAIT allocations of order 1 are possible
>  50 GFP_NOWAIT allocations of order 2 are possible
> 
>  Freeing all 90083 preallocated pages
>  (and 0 highmem pages, out of 0)
>  190 GFP_NOWAIT allocations of order 0 are possible
>  102 GFP_NOWAIT allocations of order 1 are possible
>  50 GFP_NOWAIT allocations of order 2 are possible
>  1280 GFP_KERNEL allocations of order 0 are possible
>  640 GFP_KERNEL allocations of order 1 are possible
>  320 GFP_KERNEL allocations of order 2 are possible
>  done (allocated 90083 pages)
> 
> It looks like you're right and the freed pages are not accessible with
> GFP_NOWAIT for some reason.

I'd expect this, really.  There only is a limited number of pages you can
allocate with GFP_NOWAIT.

> I also tried a number of test runs with too many applications, and saw this:
> 
> Freeing all 104006 preallocated pages ...
> 65 GFP_NOWAIT allocations of order 0 ...
> 18 GFP_NOWAIT allocations of order 1 ...
> 9 GFP_NOWAIT allocations of order 2 ...
> 0 GFP_KERNEL allocations of order 0 are possible
> ...

Now that's interesting.  We've just freed 104006 pages and we can't allocate
any, so where did all of these freed pages go, actually?

OK, I think I see what the problem is.  Quite embarassing, actually ...

Can you check if the patch below helps?

Rafael

---
 kernel/power/snapshot.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6/kernel/power/snapshot.c
===================================================================
--- linux-2.6.orig/kernel/power/snapshot.c
+++ linux-2.6/kernel/power/snapshot.c
@@ -1181,7 +1181,7 @@ static void free_unnecessary_pages(void)
 
 	memory_bm_position_reset(&copy_bm);
 
-	while (to_free_normal > 0 && to_free_highmem > 0) {
+	while (to_free_normal > 0 || to_free_highmem > 0) {
 		unsigned long pfn = memory_bm_next_pfn(&copy_bm);
 		struct page *page = pfn_to_page(pfn);
 

Re: s2disk hang update

[Alan Jenkins]

On 2/22/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> On Monday 22 February 2010, Alan Jenkins wrote:
>> Rafael J. Wysocki wrote:
>> > On Friday 19 February 2010, Alan Jenkins wrote:
>> >
>> >> On 2/18/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> >>
>> >>> On Thursday 18 February 2010, Alan Jenkins wrote:
>> >>>
>> >>>> On 2/17/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> >>>>
>> >>>>> On Wednesday 17 February 2010, Alan Jenkins wrote:
>> >>>>>
>> >>>>>> On 2/16/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> >>>>>>
>> >>>>>>> On Tuesday 16 February 2010, Alan Jenkins wrote:
>> >>>>>>>
>> >>>>>>>> On 2/16/10, Alan Jenkins <sourcejedi.lkml@googlemail.com> wrote:
>> >>>>>>>>
>> >>>>>>>>> On 2/15/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> >>>>>>>>>
>> >>>>>>>>>> On Tuesday 09 February 2010, Alan Jenkins wrote:
>> >>>>>>>>>>
>> >>>>>>>>>>> Perhaps I spoke too soon.  I see the same hang if I run too
>> >>>>>>>>>>> many
>> >>>>>>>>>>> applications.  The first hibernation fails with "not enough
>> >>>>>>>>>>> swap"
>> >>>>>>>>>>> as
>> >>>>>>>>>>> expected, but the second or third attempt hangs (with the same
>> >>>>>>>>>>> backtrace
>> >>>>>>>>>>> as before).
>> >>>>>>>>>>>
>> >>>>>>>>>>> The patch definitely helps though.  Without the patch, I see a
>> >>>>>>>>>>> hang
>> >>>>>>>>>>> the
>> >>>>>>>>>>> first time I try to hibernate with too many applications
>> >>>>>>>>>>> running.
>> >>>>>>>>>>>
>> >>>>>>>>>> Well, I have an idea.
>> >>>>>>>>>>
>> >>>>>>>>>> Can you try to apply the appended patch in addition and see if
>> >>>>>>>>>> that
>> >>>>>>>>>> helps?
>> >>>>>>>>>>
>> >>>>>>>>>> Rafael
>> >>>>>>>>>>
>> >>>>>>>>> It doesn't seem to help.
>> >>>>>>>>>
>> >>>>>>>> To be clear: It doesn't stop the hang when I hibernate with too
>> >>>>>>>> many
>> >>>>>>>> applications.
>> >>>>>>>>
>> >>>>>>>> It does stop the same hang in a different case though.
>> >>>>>>>>
>> >>>>>>>> 1. boot with init=/bin/bash
>> >>>>>>>> 2. run s2disk
>> >>>>>>>> 3. cancel the s2disk
>> >>>>>>>> 4. repeat steps 2&3
>> >>>>>>>>
>> >>>>>>>> With the patch, I can run 10s of iterations, with no hang.
>> >>>>>>>> Without the patch, it soon hangs, (in disable_nonboot_cpus(), as
>> >>>>>>>> always).
>> >>>>>>>>
>> >>>>>>>> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no
>> >>>>>>>> problem.
>> >>>>>>>> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an
>> >>>>>>>> allocation
>> >>>>>>>> failure after a couple of iterations ("kthreadd: page allocation
>> >>>>>>>> failure. order:1, mode:0xd0").  It looks like it might be the
>> >>>>>>>> same
>> >>>>>>>> stop_machine thread allocation failure that causes the hang.
>> >>>>>>>>
>> >>>>>>> Have you tested it alone or on top of the previous one?  If you've
>> >>>>>>> tested it
>> >>>>>>> alone, please apply the appended one in addition to it and retest.
>> >>>>>>>
>> >>>>>>> Rafael
>> >>>>>>>
>> >>>>>> I did test with both patches applied together -
>> >>>>>>
>> >>>>>> 1. [Update] MM / PM: Force GFP_NOIO during suspend/hibernation and
>> >>>>>> resume
>> >>>>>> 2. "reducing the number of pages that we're going to keep
>> >>>>>> preallocated
>> >>>>>> by
>> >>>>>> 20%"
>> >>>>>>
>> >>>>> In that case you can try to reduce the number of preallocated pages
>> >>>>> even
>> >>>>> more,
>> >>>>> ie. change "/ 5" to "/ 2" (for example) in the second patch.
>> >>>>>
>> >>>> It still hangs if I try to hibernate a couple of times with too many
>> >>>> applications.
>> >>>>
>> >>> Hmm.  I guess I asked that before, but is this a 32-bit or 64-bit
>> >>> system and
>> >>> how much RAM is there in the box?
>> >>>
>> >>> Rafael
>> >>>
>> >> EeePC 701.  32 bit.  512Mb RAM.  350Mb swap file, on a "first-gen" SSD.
>> >>
>> >
>> > Hmm.  I'd try to make  free_unnecessary_pages() free all of the
>> > preallocated
>> > pages and see what happens.
>> >
>>
>> It still hangs in hibernation_snapshot() / disable_nonboot_cpus().
>> After apparently freeing over 400Mb / 100,000 pages of preallocated ram.
>>
>>
>>
>> There is a change which I missed before.  When I applied your first
>> patch ("Force GFP_NOIO during suspend" etc.), it did change the hung
>> task backtraces a bit.  I don't know if it tells us anything.
>>
>> Without the patch, there were two backtraces.  The first backtrace
>> suggested a problem allocating pages for a kernel thread (at
>> copy_process() / try_to_free_pages()).  The second showed that this
>> problem was blocking s2disk (at hibernation_snapshot() /
>> disable_nonboot_cpus() / stop_machine_create()).
>>
>> With the GFP_NOIO patch, I see only the s2disk backtrace.
>
> Can you please post this backtrace?

Sure.  It's rather like the one I posted before, except

a) it only shows the one hung task (s2disk)
b) this time I had lockdep enabled
c) this time most of the lines don't have question marks.


Kernel verson:
- mainline v2.6.33-rc8-164-gaea187c, with the one patch "Force GFP_NOIO..."

Image:
http://picasaweb.google.com/lh/photo/f9KRZT2l9wCmVt-Jdggd9g?feat=directlink


INFO: task s2disk:1916 blocked for more than 120 seconds
 ...
 Call Trace:
 ? _raw_spin_unlock
 schedule_timeout+0x22	(timer.c:1366)
 ? mark_held_locks
 ? _raw_spin_unlock_irq
 ? trace_hardirqs_on_caller
 ? trace_hardirqs_on
 wait_for_common+0xb8	(sched.c:5844)
 ? default_wake_function
 wait_for_completion+0x12	(sched.c:5879)
 kthread_create+0x75	(kthread.c:133)
 ? worker_thread+0x0
 create_workqueue_thread+0x38	(workqueue.c:921)
 ? worker_thread+0x0
 __create_workqueue_key+0x156	(workqueue.c:1006)
 stop_machine_create+0x32	(stop_machine.c:121)
 disable_nonboot_cpus+0xe	(cpu.c:370)
 hibernation_snapshot+0x94	(hibernate.c:266)
 snapshot_ioctl+0x21b	(user.c:256)
 ...
 sys_ioctl+0x41 (ioctl.c:624)


Thanks
Alan

Re: s2disk hang update

[Rafael J. Wysocki]

On Monday 22 February 2010, Alan Jenkins wrote:
> Rafael J. Wysocki wrote:
> > On Friday 19 February 2010, Alan Jenkins wrote:
> >   
> >> On 2/18/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >>     
> >>> On Thursday 18 February 2010, Alan Jenkins wrote:
> >>>       
> >>>> On 2/17/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >>>>         
> >>>>> On Wednesday 17 February 2010, Alan Jenkins wrote:
> >>>>>           
> >>>>>> On 2/16/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >>>>>>             
> >>>>>>> On Tuesday 16 February 2010, Alan Jenkins wrote:
> >>>>>>>               
> >>>>>>>> On 2/16/10, Alan Jenkins <sourcejedi.lkml@googlemail.com> wrote:
> >>>>>>>>                 
> >>>>>>>>> On 2/15/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >>>>>>>>>                   
> >>>>>>>>>> On Tuesday 09 February 2010, Alan Jenkins wrote:
> >>>>>>>>>>                     
> >>>>>>>>>>> Perhaps I spoke too soon.  I see the same hang if I run too many
> >>>>>>>>>>> applications.  The first hibernation fails with "not enough
> >>>>>>>>>>> swap"
> >>>>>>>>>>> as
> >>>>>>>>>>> expected, but the second or third attempt hangs (with the same
> >>>>>>>>>>> backtrace
> >>>>>>>>>>> as before).
> >>>>>>>>>>>
> >>>>>>>>>>> The patch definitely helps though.  Without the patch, I see a
> >>>>>>>>>>> hang
> >>>>>>>>>>> the
> >>>>>>>>>>> first time I try to hibernate with too many applications
> >>>>>>>>>>> running.
> >>>>>>>>>>>                       
> >>>>>>>>>> Well, I have an idea.
> >>>>>>>>>>
> >>>>>>>>>> Can you try to apply the appended patch in addition and see if
> >>>>>>>>>> that
> >>>>>>>>>> helps?
> >>>>>>>>>>
> >>>>>>>>>> Rafael
> >>>>>>>>>>                     
> >>>>>>>>> It doesn't seem to help.
> >>>>>>>>>                   
> >>>>>>>> To be clear: It doesn't stop the hang when I hibernate with too many
> >>>>>>>> applications.
> >>>>>>>>
> >>>>>>>> It does stop the same hang in a different case though.
> >>>>>>>>
> >>>>>>>> 1. boot with init=/bin/bash
> >>>>>>>> 2. run s2disk
> >>>>>>>> 3. cancel the s2disk
> >>>>>>>> 4. repeat steps 2&3
> >>>>>>>>
> >>>>>>>> With the patch, I can run 10s of iterations, with no hang.
> >>>>>>>> Without the patch, it soon hangs, (in disable_nonboot_cpus(), as
> >>>>>>>> always).
> >>>>>>>>
> >>>>>>>> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no problem.
> >>>>>>>> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an
> >>>>>>>> allocation
> >>>>>>>> failure after a couple of iterations ("kthreadd: page allocation
> >>>>>>>> failure. order:1, mode:0xd0").  It looks like it might be the same
> >>>>>>>> stop_machine thread allocation failure that causes the hang.
> >>>>>>>>                 
> >>>>>>> Have you tested it alone or on top of the previous one?  If you've
> >>>>>>> tested it
> >>>>>>> alone, please apply the appended one in addition to it and retest.
> >>>>>>>
> >>>>>>> Rafael
> >>>>>>>               
> >>>>>> I did test with both patches applied together -
> >>>>>>
> >>>>>> 1. [Update] MM / PM: Force GFP_NOIO during suspend/hibernation and
> >>>>>> resume
> >>>>>> 2. "reducing the number of pages that we're going to keep preallocated
> >>>>>> by
> >>>>>> 20%"
> >>>>>>             
> >>>>> In that case you can try to reduce the number of preallocated pages even
> >>>>> more,
> >>>>> ie. change "/ 5" to "/ 2" (for example) in the second patch.
> >>>>>           
> >>>> It still hangs if I try to hibernate a couple of times with too many
> >>>> applications.
> >>>>         
> >>> Hmm.  I guess I asked that before, but is this a 32-bit or 64-bit system and
> >>> how much RAM is there in the box?
> >>>
> >>> Rafael
> >>>       
> >> EeePC 701.  32 bit.  512Mb RAM.  350Mb swap file, on a "first-gen" SSD.
> >>     
> >
> > Hmm.  I'd try to make  free_unnecessary_pages() free all of the preallocated
> > pages and see what happens.
> >   
> 
> It still hangs in hibernation_snapshot() / disable_nonboot_cpus().  
> After apparently freeing over 400Mb / 100,000 pages of preallocated ram.
> 
> 
> 
> There is a change which I missed before.  When I applied your first 
> patch ("Force GFP_NOIO during suspend" etc.), it did change the hung 
> task backtraces a bit.  I don't know if it tells us anything.
> 
> Without the patch, there were two backtraces.  The first backtrace 
> suggested a problem allocating pages for a kernel thread (at 
> copy_process() / try_to_free_pages()).  The second showed that this 
> problem was blocking s2disk (at hibernation_snapshot() / 
> disable_nonboot_cpus() / stop_machine_create()). 
> 
> With the GFP_NOIO patch, I see only the s2disk backtrace.

Can you please post this backtrace?

Rafael

Re: s2disk hang update

[Alan Jenkins]

[-- Attachment #1: Type: text/plain, Size: 4346 bytes --]

Rafael J. Wysocki wrote:
> On Friday 19 February 2010, Alan Jenkins wrote:
>   
>> On 2/18/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>>     
>>> On Thursday 18 February 2010, Alan Jenkins wrote:
>>>       
>>>> On 2/17/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>>>>         
>>>>> On Wednesday 17 February 2010, Alan Jenkins wrote:
>>>>>           
>>>>>> On 2/16/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>>>>>>             
>>>>>>> On Tuesday 16 February 2010, Alan Jenkins wrote:
>>>>>>>               
>>>>>>>> On 2/16/10, Alan Jenkins <sourcejedi.lkml@googlemail.com> wrote:
>>>>>>>>                 
>>>>>>>>> On 2/15/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>>>>>>>>>                   
>>>>>>>>>> On Tuesday 09 February 2010, Alan Jenkins wrote:
>>>>>>>>>>                     
>>>>>>>>>>> Perhaps I spoke too soon.  I see the same hang if I run too many
>>>>>>>>>>> applications.  The first hibernation fails with "not enough
>>>>>>>>>>> swap"
>>>>>>>>>>> as
>>>>>>>>>>> expected, but the second or third attempt hangs (with the same
>>>>>>>>>>> backtrace
>>>>>>>>>>> as before).
>>>>>>>>>>>
>>>>>>>>>>> The patch definitely helps though.  Without the patch, I see a
>>>>>>>>>>> hang
>>>>>>>>>>> the
>>>>>>>>>>> first time I try to hibernate with too many applications
>>>>>>>>>>> running.
>>>>>>>>>>>                       
>>>>>>>>>> Well, I have an idea.
>>>>>>>>>>
>>>>>>>>>> Can you try to apply the appended patch in addition and see if
>>>>>>>>>> that
>>>>>>>>>> helps?
>>>>>>>>>>
>>>>>>>>>> Rafael
>>>>>>>>>>                     
>>>>>>>>> It doesn't seem to help.
>>>>>>>>>                   
>>>>>>>> To be clear: It doesn't stop the hang when I hibernate with too many
>>>>>>>> applications.
>>>>>>>>
>>>>>>>> It does stop the same hang in a different case though.
>>>>>>>>
>>>>>>>> 1. boot with init=/bin/bash
>>>>>>>> 2. run s2disk
>>>>>>>> 3. cancel the s2disk
>>>>>>>> 4. repeat steps 2&3
>>>>>>>>
>>>>>>>> With the patch, I can run 10s of iterations, with no hang.
>>>>>>>> Without the patch, it soon hangs, (in disable_nonboot_cpus(), as
>>>>>>>> always).
>>>>>>>>
>>>>>>>> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no problem.
>>>>>>>> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an
>>>>>>>> allocation
>>>>>>>> failure after a couple of iterations ("kthreadd: page allocation
>>>>>>>> failure. order:1, mode:0xd0").  It looks like it might be the same
>>>>>>>> stop_machine thread allocation failure that causes the hang.
>>>>>>>>                 
>>>>>>> Have you tested it alone or on top of the previous one?  If you've
>>>>>>> tested it
>>>>>>> alone, please apply the appended one in addition to it and retest.
>>>>>>>
>>>>>>> Rafael
>>>>>>>               
>>>>>> I did test with both patches applied together -
>>>>>>
>>>>>> 1. [Update] MM / PM: Force GFP_NOIO during suspend/hibernation and
>>>>>> resume
>>>>>> 2. "reducing the number of pages that we're going to keep preallocated
>>>>>> by
>>>>>> 20%"
>>>>>>             
>>>>> In that case you can try to reduce the number of preallocated pages even
>>>>> more,
>>>>> ie. change "/ 5" to "/ 2" (for example) in the second patch.
>>>>>           
>>>> It still hangs if I try to hibernate a couple of times with too many
>>>> applications.
>>>>         
>>> Hmm.  I guess I asked that before, but is this a 32-bit or 64-bit system and
>>> how much RAM is there in the box?
>>>
>>> Rafael
>>>       
>> EeePC 701.  32 bit.  512Mb RAM.  350Mb swap file, on a "first-gen" SSD.
>>     
>
> Hmm.  I'd try to make  free_unnecessary_pages() free all of the preallocated
> pages and see what happens.
>   

It still hangs in hibernation_snapshot() / disable_nonboot_cpus().  
After apparently freeing over 400Mb / 100,000 pages of preallocated ram.



There is a change which I missed before.  When I applied your first 
patch ("Force GFP_NOIO during suspend" etc.), it did change the hung 
task backtraces a bit.  I don't know if it tells us anything.

Without the patch, there were two backtraces.  The first backtrace 
suggested a problem allocating pages for a kernel thread (at 
copy_process() / try_to_free_pages()).  The second showed that this 
problem was blocking s2disk (at hibernation_snapshot() / 
disable_nonboot_cpus() / stop_machine_create()). 

With the GFP_NOIO patch, I see only the s2disk backtrace.


Thanks
Alan

[-- Attachment #2: free-all-prealloc.patch --]
[-- Type: text/x-diff, Size: 575 bytes --]

diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
index 36cb168..970930a 100644
--- a/kernel/power/snapshot.c
+++ b/kernel/power/snapshot.c
@@ -1179,6 +1179,12 @@ static void free_unnecessary_pages(void)
 		to_free_normal -= save_highmem - alloc_highmem;
 	}
 
+	to_free_normal = alloc_normal;
+	printk(KERN_ERR "Freeing all %d preallocated pages\n",
+			to_free_normal);
+	printk(KERN_ERR "(and %d highmem pages, out of %d)\n",
+			alloc_highmem, to_free_highmem);
+
 	memory_bm_position_reset(&copy_bm);
 
 	while (to_free_normal > 0 && to_free_highmem > 0) {

[-- Attachment #3: Type: text/plain, Size: 0 bytes --]

Re: s2disk hang update

[Rafael J. Wysocki]

On Thursday 18 February 2010, Alan Jenkins wrote:
> On 2/17/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> > On Wednesday 17 February 2010, Alan Jenkins wrote:
> >> On 2/16/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >> > On Tuesday 16 February 2010, Alan Jenkins wrote:
> >> >> On 2/16/10, Alan Jenkins <sourcejedi.lkml@googlemail.com> wrote:
> >> >> > On 2/15/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >> >> >> On Tuesday 09 February 2010, Alan Jenkins wrote:
> >> >> >>> Perhaps I spoke too soon.  I see the same hang if I run too many
> >> >> >>> applications.  The first hibernation fails with "not enough swap"
> >> >> >>> as
> >> >> >>> expected, but the second or third attempt hangs (with the same
> >> >> >>> backtrace
> >> >> >>> as before).
> >> >> >>>
> >> >> >>> The patch definitely helps though.  Without the patch, I see a hang
> >> >> >>> the
> >> >> >>> first time I try to hibernate with too many applications running.
> >> >> >>
> >> >> >> Well, I have an idea.
> >> >> >>
> >> >> >> Can you try to apply the appended patch in addition and see if that
> >> >> >> helps?
> >> >> >>
> >> >> >> Rafael
> >> >> >
> >> >> > It doesn't seem to help.
> >> >>
> >> >> To be clear: It doesn't stop the hang when I hibernate with too many
> >> >> applications.
> >> >>
> >> >> It does stop the same hang in a different case though.
> >> >>
> >> >> 1. boot with init=/bin/bash
> >> >> 2. run s2disk
> >> >> 3. cancel the s2disk
> >> >> 4. repeat steps 2&3
> >> >>
> >> >> With the patch, I can run 10s of iterations, with no hang.
> >> >> Without the patch, it soon hangs, (in disable_nonboot_cpus(), as
> >> >> always).
> >> >>
> >> >> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no problem.
> >> >> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an allocation
> >> >> failure after a couple of iterations ("kthreadd: page allocation
> >> >> failure. order:1, mode:0xd0").  It looks like it might be the same
> >> >> stop_machine thread allocation failure that causes the hang.
> >> >
> >> > Have you tested it alone or on top of the previous one?  If you've
> >> > tested it
> >> > alone, please apply the appended one in addition to it and retest.
> >> >
> >> > Rafael
> >>
> >> I did test with both patches applied together -
> >>
> >> 1. [Update] MM / PM: Force GFP_NOIO during suspend/hibernation and resume
> >> 2. "reducing the number of pages that we're going to keep preallocated by
> >> 20%"
> >
> > In that case you can try to reduce the number of preallocated pages even
> > more,
> > ie. change "/ 5" to "/ 2" (for example) in the second patch.
> 
> It still hangs if I try to hibernate a couple of times with too many
> applications.

Hmm.  I guess I asked that before, but is this a 32-bit or 64-bit system and
how much RAM is there in the box?

Rafael

Re: s2disk hang update

[Rafael J. Wysocki]

On Wednesday 17 February 2010, Alan Jenkins wrote:
> On 2/16/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> > On Tuesday 16 February 2010, Alan Jenkins wrote:
> >> On 2/16/10, Alan Jenkins <sourcejedi.lkml@googlemail.com> wrote:
> >> > On 2/15/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >> >> On Tuesday 09 February 2010, Alan Jenkins wrote:
> >> >>> Perhaps I spoke too soon.  I see the same hang if I run too many
> >> >>> applications.  The first hibernation fails with "not enough swap" as
> >> >>> expected, but the second or third attempt hangs (with the same
> >> >>> backtrace
> >> >>> as before).
> >> >>>
> >> >>> The patch definitely helps though.  Without the patch, I see a hang
> >> >>> the
> >> >>> first time I try to hibernate with too many applications running.
> >> >>
> >> >> Well, I have an idea.
> >> >>
> >> >> Can you try to apply the appended patch in addition and see if that
> >> >> helps?
> >> >>
> >> >> Rafael
> >> >
> >> > It doesn't seem to help.
> >>
> >> To be clear: It doesn't stop the hang when I hibernate with too many
> >> applications.
> >>
> >> It does stop the same hang in a different case though.
> >>
> >> 1. boot with init=/bin/bash
> >> 2. run s2disk
> >> 3. cancel the s2disk
> >> 4. repeat steps 2&3
> >>
> >> With the patch, I can run 10s of iterations, with no hang.
> >> Without the patch, it soon hangs, (in disable_nonboot_cpus(), as always).
> >>
> >> That's what happens on 2.6.33-rc7.  On 2.6.30, there is no problem.
> >> On 2.6.31 and 2.6.32 I don't get a hang, but dmesg shows an allocation
> >> failure after a couple of iterations ("kthreadd: page allocation
> >> failure. order:1, mode:0xd0").  It looks like it might be the same
> >> stop_machine thread allocation failure that causes the hang.
> >
> > Have you tested it alone or on top of the previous one?  If you've tested it
> > alone, please apply the appended one in addition to it and retest.
> >
> > Rafael
> 
> I did test with both patches applied together -
> 
> 1. [Update] MM / PM: Force GFP_NOIO during suspend/hibernation and resume
> 2. "reducing the number of pages that we're going to keep preallocated by 20%"

In that case you can try to reduce the number of preallocated pages even more,
ie. change "/ 5" to "/ 2" (for example) in the second patch.

Rafael

Re: s2disk hang update

[Alan Jenkins]

On 2/15/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> On Tuesday 09 February 2010, Alan Jenkins wrote:
>> Perhaps I spoke too soon.  I see the same hang if I run too many
>> applications.  The first hibernation fails with "not enough swap" as
>> expected, but the second or third attempt hangs (with the same backtrace
>> as before).
>>
>> The patch definitely helps though.  Without the patch, I see a hang the
>> first time I try to hibernate with too many applications running.
>
> Well, I have an idea.
>
> Can you try to apply the appended patch in addition and see if that helps?
>
> Rafael

It doesn't seem to help.

Thanks
Alan

Re: s2disk hang update

[Rafael J. Wysocki]

On Tuesday 09 February 2010, Alan Jenkins wrote:
> Alan Jenkins wrote:
> > On 2/2/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >   
> >> On Tuesday 02 February 2010, Alan Jenkins wrote:
> >>     
> >>> On 1/2/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >>>       
> >>>> On Saturday 02 January 2010, Alan Jenkins wrote:
> >>>> Hi,
> >>>>
> >>>>         
> >>>>> I've been suffering from s2disk hangs again.  This time, the hangs
> >>>>> were always before the hibernation image was written out.
> >>>>>
> >>>>> They're still frustratingly random.  I just started trying to work out
> >>>>> whether doubling PAGES_FOR_IO makes them go away, but they went away
> >>>>> on their own again.
> >>>>>
> >>>>> I did manage to capture a backtrace with debug info though.  Here it
> >>>>> is for 2.6.33-rc2.  (It has also happened on rc1).  I was able to get
> >>>>> the line numbers (using gdb, e.g.  "info line
> >>>>> *stop_machine_create+0x27"), having built the kernel with debug info.
> >>>>>
> >>>>> [top of trace lost due to screen height]
> >>>>> ? sync_page	(filemap.c:183)
> >>>>> ? wait_on_page_bit	(filemap.c:506)
> >>>>> ? wake_bit_function	(wait.c:174)
> >>>>> ? shrink_page_list	(vmscan.c:696)
> >>>>> ? __delayacct_blkio_end	(delayacct.c:94)
> >>>>> ? finish_wait	(list.h:142)
> >>>>> ? congestion_wait	(backing-dev.c:761)
> >>>>> ? shrink_inactive_list	(vmscan.c:1193)
> >>>>> ? scsi_request_fn	(spinlock.h:306)
> >>>>> ? blk_run_queue	(blk-core.c:434)
> >>>>> ? shrink_zone	(vmscan.c:1484)
> >>>>> ? do_try_to_free_pages	(vmscan.c:1684)
> >>>>> ? try_to_free_pages	(vmscan.c:1848)
> >>>>> ? isolate_pages_global	(vmscan.c:980)
> >>>>> ? __alloc_pages_nodemask	(page_alloc.c:1702)
> >>>>> ? __get_free_pages	(page_alloc.c:1990)
> >>>>> ? copy_process	(fork.c:237)
> >>>>> ? do_fork	(fork.c:1443)
> >>>>> ? rb_erase
> >>>>> ? __switch_to
> >>>>> ? kthread
> >>>>> ? kernel_thread
> >>>>> ? kthread
> >>>>> ? kernel_thread_helper
> >>>>> ? kthreadd
> >>>>> ? kthreadd
> >>>>> ? kernel_thread_helper
> >>>>>
> >>>>> INFO: task s2disk:2174 blocked for more than 120 seconds
> >>>>>           
> >>>> This looks like we have run out of memory while creating a new kernel
> >>>> thread
> >>>> and we have blocked on I/O while trying to free some space (quite
> >>>> obviously,
> >>>> because the I/O doesn't work at this point).
> >>>>         
> >>> For context, the kernel thread being created here is the stop_machine
> >>> thread.  It is created by disable_nonboot_cpus(), called from
> >>> hibernation_snapshot().  See e.g. this hung task backtrace -
> >>>
> >>> http://picasaweb.google.com/lh/photo/BkKUwZCrQ2ceBIM9ZOh7Ow?feat=directlink
> >>>
> >>>       
> >>>> I think it should help if you increase PAGES_FOR_IO, then.
> >>>>         
> >>> Ok, it's been happening again on 2.6.33-rc6.  Unfortunately increasing
> >>> PAGES_FOR_IO doesn't help.
> >>>
> >>> I've been using a test patch to make PAGES_FOR_IO tunable at run time.
> >>>  I get the same hang if I increase it by a factor of 10, to 10240:
> >>>
> >>> # cd /sys/module/kernel/parameters/
> >>> # ls
> >>> consoleblank  initcall_debug  PAGES_FOR_IO  panic  pause_on_oops
> >>> SPARE_PAGES
> >>> # echo 10240 > PAGES_FOR_IO
> >>> # echo 2560 > SPARE_PAGES
> >>> # cat SPARE_PAGES
> >>> 2560
> >>> # cat PAGES_FOR_IO
> >>> 10240
> >>>
> >>> I also added a debug patch to try and understand the calculations with
> >>> PAGES_FOR_IO in hibernate_preallocate_memory().  I still don't really
> >>> understand them and there could easily be errors in my debug patch,
> >>> but the output is interesting.
> >>>
> >>> Increasing PAGES_FOR_IO by almost 10000 has the expected effect of
> >>> decreasing "max_size" by the same amount.  However it doesn't appear
> >>> to increase the number of free pages at the critical moment.
> >>>
> >>> PAGES_FOR_IO = 1024:
> >>> http://picasaweb.google.com/lh/photo/DYQGvB_4hvCvVuxZf2ibxg?feat=directlink
> >>>
> >>> PAGES_FOR_IO = 10240:
> >>> http://picasaweb.google.com/lh/photo/AIkV_ZBwt22nzN-JdOJCWA?feat=directlink
> >>>
> >>>
> >>> You may remember that I was originally able to avoid the hang by
> >>> reverting commit 5f8dcc2.  It doesn't revert cleanly any more.
> >>> However, I tried applying my test&debug patches on top of 5f8dcc2~1
> >>> (just before the commit that triggered the hang).  That kernel
> >>> apparently left ~5000 pages free at hibernation time, v.s. ~1200 when
> >>> testing the same scenario on 2.6.33-rc6.  (As before, the number of
> >>> free pages remained the same if I increased PAGES_FOR_IO to 10240).
> >>>       
> >> I think the hang may be avoided by using this patch
> >> http://patchwork.kernel.org/patch/74740/
> >> but the hibernation will fail instead.
> >>
> >> Can you please repeat your experiments with the patch below applied and
> >> report back?
> >>
> >> Rafael
> >>     
> >
> > It causes hibernation to succeed <grin>.
> >   
> 
> Perhaps I spoke too soon.  I see the same hang if I run too many 
> applications.  The first hibernation fails with "not enough swap" as 
> expected, but the second or third attempt hangs (with the same backtrace 
> as before).
> 
> The patch definitely helps though.  Without the patch, I see a hang the 
> first time I try to hibernate with too many applications running.

Well, I have an idea.

Can you try to apply the appended patch in addition and see if that helps?

Rafael

---
 kernel/power/snapshot.c |   11 +++++++++++
 1 file changed, 11 insertions(+)

Index: linux-2.6/kernel/power/snapshot.c
===================================================================
--- linux-2.6.orig/kernel/power/snapshot.c
+++ linux-2.6/kernel/power/snapshot.c
@@ -1179,6 +1179,17 @@ static void free_unnecessary_pages(void)
 		to_free_normal -= save_highmem - alloc_highmem;
 	}
 
+	/*
+	 * After we have preallocated memory for the image there may be too
+	 * little memory for other things done later down the road, like
+	 * starting new kernel threads for disabling nonboot CPUs.  Try to
+	 * mitigate this by reducing the number of pages that we're going to
+	 * keep preallocated by 20%.
+	 */
+	to_free_normal += (alloc_normal - to_free_normal) / 5;
+	if (to_free_normal > alloc_normal)
+		to_free_normal = alloc_normal;
+
 	memory_bm_position_reset(&copy_bm);
 
 	while (to_free_normal > 0 && to_free_highmem > 0) {

Re: s2disk hang update

[Alan Jenkins]

Alan Jenkins wrote:
> On 2/2/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>   
>> On Tuesday 02 February 2010, Alan Jenkins wrote:
>>     
>>> On 1/2/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>>>       
>>>> On Saturday 02 January 2010, Alan Jenkins wrote:
>>>> Hi,
>>>>
>>>>         
>>>>> I've been suffering from s2disk hangs again.  This time, the hangs
>>>>> were always before the hibernation image was written out.
>>>>>
>>>>> They're still frustratingly random.  I just started trying to work out
>>>>> whether doubling PAGES_FOR_IO makes them go away, but they went away
>>>>> on their own again.
>>>>>
>>>>> I did manage to capture a backtrace with debug info though.  Here it
>>>>> is for 2.6.33-rc2.  (It has also happened on rc1).  I was able to get
>>>>> the line numbers (using gdb, e.g.  "info line
>>>>> *stop_machine_create+0x27"), having built the kernel with debug info.
>>>>>
>>>>> [top of trace lost due to screen height]
>>>>> ? sync_page	(filemap.c:183)
>>>>> ? wait_on_page_bit	(filemap.c:506)
>>>>> ? wake_bit_function	(wait.c:174)
>>>>> ? shrink_page_list	(vmscan.c:696)
>>>>> ? __delayacct_blkio_end	(delayacct.c:94)
>>>>> ? finish_wait	(list.h:142)
>>>>> ? congestion_wait	(backing-dev.c:761)
>>>>> ? shrink_inactive_list	(vmscan.c:1193)
>>>>> ? scsi_request_fn	(spinlock.h:306)
>>>>> ? blk_run_queue	(blk-core.c:434)
>>>>> ? shrink_zone	(vmscan.c:1484)
>>>>> ? do_try_to_free_pages	(vmscan.c:1684)
>>>>> ? try_to_free_pages	(vmscan.c:1848)
>>>>> ? isolate_pages_global	(vmscan.c:980)
>>>>> ? __alloc_pages_nodemask	(page_alloc.c:1702)
>>>>> ? __get_free_pages	(page_alloc.c:1990)
>>>>> ? copy_process	(fork.c:237)
>>>>> ? do_fork	(fork.c:1443)
>>>>> ? rb_erase
>>>>> ? __switch_to
>>>>> ? kthread
>>>>> ? kernel_thread
>>>>> ? kthread
>>>>> ? kernel_thread_helper
>>>>> ? kthreadd
>>>>> ? kthreadd
>>>>> ? kernel_thread_helper
>>>>>
>>>>> INFO: task s2disk:2174 blocked for more than 120 seconds
>>>>>           
>>>> This looks like we have run out of memory while creating a new kernel
>>>> thread
>>>> and we have blocked on I/O while trying to free some space (quite
>>>> obviously,
>>>> because the I/O doesn't work at this point).
>>>>         
>>> For context, the kernel thread being created here is the stop_machine
>>> thread.  It is created by disable_nonboot_cpus(), called from
>>> hibernation_snapshot().  See e.g. this hung task backtrace -
>>>
>>> http://picasaweb.google.com/lh/photo/BkKUwZCrQ2ceBIM9ZOh7Ow?feat=directlink
>>>
>>>       
>>>> I think it should help if you increase PAGES_FOR_IO, then.
>>>>         
>>> Ok, it's been happening again on 2.6.33-rc6.  Unfortunately increasing
>>> PAGES_FOR_IO doesn't help.
>>>
>>> I've been using a test patch to make PAGES_FOR_IO tunable at run time.
>>>  I get the same hang if I increase it by a factor of 10, to 10240:
>>>
>>> # cd /sys/module/kernel/parameters/
>>> # ls
>>> consoleblank  initcall_debug  PAGES_FOR_IO  panic  pause_on_oops
>>> SPARE_PAGES
>>> # echo 10240 > PAGES_FOR_IO
>>> # echo 2560 > SPARE_PAGES
>>> # cat SPARE_PAGES
>>> 2560
>>> # cat PAGES_FOR_IO
>>> 10240
>>>
>>> I also added a debug patch to try and understand the calculations with
>>> PAGES_FOR_IO in hibernate_preallocate_memory().  I still don't really
>>> understand them and there could easily be errors in my debug patch,
>>> but the output is interesting.
>>>
>>> Increasing PAGES_FOR_IO by almost 10000 has the expected effect of
>>> decreasing "max_size" by the same amount.  However it doesn't appear
>>> to increase the number of free pages at the critical moment.
>>>
>>> PAGES_FOR_IO = 1024:
>>> http://picasaweb.google.com/lh/photo/DYQGvB_4hvCvVuxZf2ibxg?feat=directlink
>>>
>>> PAGES_FOR_IO = 10240:
>>> http://picasaweb.google.com/lh/photo/AIkV_ZBwt22nzN-JdOJCWA?feat=directlink
>>>
>>>
>>> You may remember that I was originally able to avoid the hang by
>>> reverting commit 5f8dcc2.  It doesn't revert cleanly any more.
>>> However, I tried applying my test&debug patches on top of 5f8dcc2~1
>>> (just before the commit that triggered the hang).  That kernel
>>> apparently left ~5000 pages free at hibernation time, v.s. ~1200 when
>>> testing the same scenario on 2.6.33-rc6.  (As before, the number of
>>> free pages remained the same if I increased PAGES_FOR_IO to 10240).
>>>       
>> I think the hang may be avoided by using this patch
>> http://patchwork.kernel.org/patch/74740/
>> but the hibernation will fail instead.
>>
>> Can you please repeat your experiments with the patch below applied and
>> report back?
>>
>> Rafael
>>     
>
> It causes hibernation to succeed <grin>.
>   

Perhaps I spoke too soon.  I see the same hang if I run too many 
applications.  The first hibernation fails with "not enough swap" as 
expected, but the second or third attempt hangs (with the same backtrace 
as before).

The patch definitely helps though.  Without the patch, I see a hang the 
first time I try to hibernate with too many applications running.

Regards
Alan

Re: s2disk hang update

[Alan Jenkins]

[-- Attachment #1: Type: text/plain, Size: 4726 bytes --]

On 2/2/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> On Tuesday 02 February 2010, Alan Jenkins wrote:
>> On 1/2/10, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> > On Saturday 02 January 2010, Alan Jenkins wrote:
>> > Hi,
>> >
>> >> I've been suffering from s2disk hangs again.  This time, the hangs
>> >> were always before the hibernation image was written out.
>> >>
>> >> They're still frustratingly random.  I just started trying to work out
>> >> whether doubling PAGES_FOR_IO makes them go away, but they went away
>> >> on their own again.
>> >>
>> >> I did manage to capture a backtrace with debug info though.  Here it
>> >> is for 2.6.33-rc2.  (It has also happened on rc1).  I was able to get
>> >> the line numbers (using gdb, e.g.  "info line
>> >> *stop_machine_create+0x27"), having built the kernel with debug info.
>> >>
>> >> [top of trace lost due to screen height]
>> >> ? sync_page	(filemap.c:183)
>> >> ? wait_on_page_bit	(filemap.c:506)
>> >> ? wake_bit_function	(wait.c:174)
>> >> ? shrink_page_list	(vmscan.c:696)
>> >> ? __delayacct_blkio_end	(delayacct.c:94)
>> >> ? finish_wait	(list.h:142)
>> >> ? congestion_wait	(backing-dev.c:761)
>> >> ? shrink_inactive_list	(vmscan.c:1193)
>> >> ? scsi_request_fn	(spinlock.h:306)
>> >> ? blk_run_queue	(blk-core.c:434)
>> >> ? shrink_zone	(vmscan.c:1484)
>> >> ? do_try_to_free_pages	(vmscan.c:1684)
>> >> ? try_to_free_pages	(vmscan.c:1848)
>> >> ? isolate_pages_global	(vmscan.c:980)
>> >> ? __alloc_pages_nodemask	(page_alloc.c:1702)
>> >> ? __get_free_pages	(page_alloc.c:1990)
>> >> ? copy_process	(fork.c:237)
>> >> ? do_fork	(fork.c:1443)
>> >> ? rb_erase
>> >> ? __switch_to
>> >> ? kthread
>> >> ? kernel_thread
>> >> ? kthread
>> >> ? kernel_thread_helper
>> >> ? kthreadd
>> >> ? kthreadd
>> >> ? kernel_thread_helper
>> >>
>> >> INFO: task s2disk:2174 blocked for more than 120 seconds
>> >
>> > This looks like we have run out of memory while creating a new kernel
>> > thread
>> > and we have blocked on I/O while trying to free some space (quite
>> > obviously,
>> > because the I/O doesn't work at this point).
>>
>> For context, the kernel thread being created here is the stop_machine
>> thread.  It is created by disable_nonboot_cpus(), called from
>> hibernation_snapshot().  See e.g. this hung task backtrace -
>>
>> http://picasaweb.google.com/lh/photo/BkKUwZCrQ2ceBIM9ZOh7Ow?feat=directlink
>>
>> > I think it should help if you increase PAGES_FOR_IO, then.
>>
>> Ok, it's been happening again on 2.6.33-rc6.  Unfortunately increasing
>> PAGES_FOR_IO doesn't help.
>>
>> I've been using a test patch to make PAGES_FOR_IO tunable at run time.
>>  I get the same hang if I increase it by a factor of 10, to 10240:
>>
>> # cd /sys/module/kernel/parameters/
>> # ls
>> consoleblank  initcall_debug  PAGES_FOR_IO  panic  pause_on_oops
>> SPARE_PAGES
>> # echo 10240 > PAGES_FOR_IO
>> # echo 2560 > SPARE_PAGES
>> # cat SPARE_PAGES
>> 2560
>> # cat PAGES_FOR_IO
>> 10240
>>
>> I also added a debug patch to try and understand the calculations with
>> PAGES_FOR_IO in hibernate_preallocate_memory().  I still don't really
>> understand them and there could easily be errors in my debug patch,
>> but the output is interesting.
>>
>> Increasing PAGES_FOR_IO by almost 10000 has the expected effect of
>> decreasing "max_size" by the same amount.  However it doesn't appear
>> to increase the number of free pages at the critical moment.
>>
>> PAGES_FOR_IO = 1024:
>> http://picasaweb.google.com/lh/photo/DYQGvB_4hvCvVuxZf2ibxg?feat=directlink
>>
>> PAGES_FOR_IO = 10240:
>> http://picasaweb.google.com/lh/photo/AIkV_ZBwt22nzN-JdOJCWA?feat=directlink
>>
>>
>> You may remember that I was originally able to avoid the hang by
>> reverting commit 5f8dcc2.  It doesn't revert cleanly any more.
>> However, I tried applying my test&debug patches on top of 5f8dcc2~1
>> (just before the commit that triggered the hang).  That kernel
>> apparently left ~5000 pages free at hibernation time, v.s. ~1200 when
>> testing the same scenario on 2.6.33-rc6.  (As before, the number of
>> free pages remained the same if I increased PAGES_FOR_IO to 10240).
>
> I think the hang may be avoided by using this patch
> http://patchwork.kernel.org/patch/74740/
> but the hibernation will fail instead.
>
> Can you please repeat your experiments with the patch below applied and
> report back?
>
> Rafael

It causes hibernation to succeed <grin>.

I've attached a dmesg from a successful hibernation with both patches
applied.  And for comparison, a screenshot from a hung hibernation
without the fix, but with the debug patch you sent me.

[In both cases I tested directly on top of v2.6.33-rc6, i.e. no
changes to PAGES_FOR_IO or anything else].

Many thanks!
Alan

[-- Attachment #2: dmesg.txt --]
[-- Type: text/plain, Size: 41556 bytes --]

[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Linux version 2.6.33-rc6eeepc-00001-gd37a207-dirty (alan@alan-desktop) (gcc version 4.4.1 (Ubuntu 4.4.1-4ubuntu9) ) #50 SMP Wed Feb 3 10:25:31 GMT 2010
[    0.000000] BIOS-provided physical RAM map:
[    0.000000]  BIOS-e820: 0000000000000000 - 000000000009fc00 (usable)
[    0.000000]  BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved)
[    0.000000]  BIOS-e820: 00000000000e4000 - 0000000000100000 (reserved)
[    0.000000]  BIOS-e820: 0000000000100000 - 000000001f780000 (usable)
[    0.000000]  BIOS-e820: 000000001f780000 - 000000001f790000 (ACPI data)
[    0.000000]  BIOS-e820: 000000001f790000 - 000000001f7d0000 (ACPI NVS)
[    0.000000]  BIOS-e820: 000000001f7d0000 - 000000001f7de000 (reserved)
[    0.000000]  BIOS-e820: 000000001f7e0000 - 000000001f800000 (reserved)
[    0.000000]  BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
[    0.000000]  BIOS-e820: 00000000fff80000 - 0000000100000000 (reserved)
[    0.000000] Notice: NX (Execute Disable) protection cannot be enabled: non-PAE kernel!
[    0.000000] DMI present.
[    0.000000] AMI BIOS detected: BIOS may corrupt low RAM, working around it.
[    0.000000] e820 update range: 0000000000000000 - 0000000000010000 (usable) ==> (reserved)
[    0.000000] last_pfn = 0x1f780 max_arch_pfn = 0x100000
[    0.000000] MTRR default type: uncachable
[    0.000000] MTRR fixed ranges enabled:
[    0.000000]   00000-9FFFF write-back
[    0.000000]   A0000-DFFFF uncachable
[    0.000000]   E0000-EFFFF write-through
[    0.000000]   F0000-FFFFF write-protect
[    0.000000] MTRR variable ranges enabled:
[    0.000000]   0 base 000000000 mask FE0000000 write-back
[    0.000000]   1 base 01F800000 mask FFF800000 uncachable
[    0.000000]   2 disabled
[    0.000000]   3 disabled
[    0.000000]   4 disabled
[    0.000000]   5 disabled
[    0.000000]   6 disabled
[    0.000000]   7 disabled
[    0.000000] PAT not supported by CPU.
[    0.000000] initial memory mapped : 0 - 01800000
[    0.000000] found SMP MP-table at [c00ff780] ff780
[    0.000000] init_memory_mapping: 0000000000000000-000000001f780000
[    0.000000]  0000000000 - 0000400000 page 4k
[    0.000000]  0000400000 - 001f400000 page 2M
[    0.000000]  001f400000 - 001f780000 page 4k
[    0.000000] kernel direct mapping tables up to 1f780000 @ 15000-1b000
[    0.000000] RAMDISK: 17710000 - 179df578
[    0.000000] ACPI: RSDP 000fbe50 00014 (v00 ACPIAM)
[    0.000000] ACPI: RSDT 1f780000 00034 (v01 A M I  OEMRSDT  03000911 MSFT 00000097)
[    0.000000] ACPI: FACP 1f780200 00081 (v01 A M I  OEMFACP  03000911 MSFT 00000097)
[    0.000000] ACPI: DSDT 1f780400 06069 (v01  A0797 A0797000 00000000 INTL 20060113)
[    0.000000] ACPI: FACS 1f790000 00040
[    0.000000] ACPI: APIC 1f780390 00068 (v01 A M I  OEMAPIC  03000911 MSFT 00000097)
[    0.000000] ACPI: OEMB 1f790040 00046 (v01 A M I  AMI_OEM  03000911 MSFT 00000097)
[    0.000000] ACPI: MCFG 1f786470 0003C (v01 A M I  OEMMCFG  03000911 MSFT 00000097)
[    0.000000] ACPI: Local APIC address 0xfee00000
[    0.000000] 0MB HIGHMEM available.
[    0.000000] 503MB LOWMEM available.
[    0.000000]   mapped low ram: 0 - 1f780000
[    0.000000]   low ram: 0 - 1f780000
[    0.000000]   node 0 low ram: 00000000 - 1f780000
[    0.000000]   node 0 bootmap 00017000 - 0001aef0
[    0.000000] (14 early reservations) ==> bootmem [0000000000 - 001f780000]
[    0.000000]   #0 [0000000000 - 0000001000]   BIOS data page ==> [0000000000 - 0000001000]
[    0.000000]   #1 [0000001000 - 0000002000]    EX TRAMPOLINE ==> [0000001000 - 0000002000]
[    0.000000]   #2 [0001000000 - 00014aa244]    TEXT DATA BSS ==> [0001000000 - 00014aa244]
[    0.000000]   #3 [0017710000 - 00179df578]          RAMDISK ==> [0017710000 - 00179df578]
[    0.000000]   #4 [00014ab000 - 00014b11f4]              BRK ==> [00014ab000 - 00014b11f4]
[    0.000000]   #5 [00000ff790 - 0000100000]    BIOS reserved ==> [00000ff790 - 0000100000]
[    0.000000]   #6 [00000ff780 - 00000ff790]     MP-table mpf ==> [00000ff780 - 00000ff790]
[    0.000000]   #7 [000009fc00 - 00000f0ee0]    BIOS reserved ==> [000009fc00 - 00000f0ee0]
[    0.000000]   #8 [00000f1028 - 00000ff780]    BIOS reserved ==> [00000f1028 - 00000ff780]
[    0.000000]   #9 [00000f0ee0 - 00000f1028]     MP-table mpc ==> [00000f0ee0 - 00000f1028]
[    0.000000]   #10 [0000010000 - 0000011000]       TRAMPOLINE ==> [0000010000 - 0000011000]
[    0.000000]   #11 [0000011000 - 0000015000]      ACPI WAKEUP ==> [0000011000 - 0000015000]
[    0.000000]   #12 [0000015000 - 0000017000]          PGTABLE ==> [0000015000 - 0000017000]
[    0.000000]   #13 [0000017000 - 000001b000]          BOOTMAP ==> [0000017000 - 000001b000]
[    0.000000] Zone PFN ranges:
[    0.000000]   DMA      0x00000010 -> 0x00001000
[    0.000000]   Normal   0x00001000 -> 0x0001f780
[    0.000000]   HighMem  0x0001f780 -> 0x0001f780
[    0.000000] Movable zone start PFN for each node
[    0.000000] early_node_map[2] active PFN ranges
[    0.000000]     0: 0x00000010 -> 0x0000009f
[    0.000000]     0: 0x00000100 -> 0x0001f780
[    0.000000] On node 0 totalpages: 128783
[    0.000000] free_area_init_node: node 0, pgdat c139d3c0, node_mem_map c14b3200
[    0.000000]   DMA zone: 32 pages used for memmap
[    0.000000]   DMA zone: 0 pages reserved
[    0.000000]   DMA zone: 3951 pages, LIFO batch:0
[    0.000000]   Normal zone: 975 pages used for memmap
[    0.000000]   Normal zone: 123825 pages, LIFO batch:31
[    0.000000] Using APIC driver default
[    0.000000] ACPI: PM-Timer IO Port: 0x808
[    0.000000] ACPI: Local APIC address 0xfee00000
[    0.000000] ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled)
[    0.000000] ACPI: IOAPIC (id[0x01] address[0xfec00000] gsi_base[0])
[    0.000000] IOAPIC[0]: apic_id 1, version 32, address 0xfec00000, GSI 0-23
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[    0.000000] ACPI: IRQ0 used by override.
[    0.000000] ACPI: IRQ2 used by override.
[    0.000000] ACPI: IRQ9 used by override.
[    0.000000] Enabling APIC mode:  Flat.  Using 1 I/O APICs
[    0.000000] Using ACPI (MADT) for SMP configuration information
[    0.000000] SMP: Allowing 1 CPUs, 0 hotplug CPUs
[    0.000000] nr_irqs_gsi: 24
[    0.000000] PM: Registered nosave memory: 000000000009f000 - 00000000000a0000
[    0.000000] PM: Registered nosave memory: 00000000000a0000 - 00000000000e4000
[    0.000000] PM: Registered nosave memory: 00000000000e4000 - 0000000000100000
[    0.000000] Allocating PCI resources starting at 1f800000 (gap: 1f800000:df600000)
[    0.000000] setup_percpu: NR_CPUS:32 nr_cpumask_bits:32 nr_cpu_ids:1 nr_node_ids:1
[    0.000000] PERCPU: Embedded 13 pages/cpu @c1c00000 s31000 r0 d22248 u4194304
[    0.000000] pcpu-alloc: s31000 r0 d22248 u4194304 alloc=1*4194304
[    0.000000] pcpu-alloc: [0] 0 
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 127776
[    0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-2.6.33-rc6eeepc-00001-gd37a207-dirty root=/dev/sda2 ro rootfstype=ext4 no_console_suspend i915.modeset=1 resume=/dev/sda2 resume_offset=188416
[    0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes)
[    0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
[    0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
[    0.000000] Enabling fast FPU save and restore... done.
[    0.000000] Enabling unmasked SIMD FPU exception support... done.
[    0.000000] Initializing CPU#0
[    0.000000] Initializing HighMem for node 0 (00000000:00000000)
[    0.000000] Memory: 502560k/515584k available (2389k kernel code, 12216k reserved, 1352k data, 344k init, 0k highmem)
[    0.000000] virtual kernel memory layout:
[    0.000000]     fixmap  : 0xffd57000 - 0xfffff000   (2720 kB)
[    0.000000]     pkmap   : 0xff400000 - 0xff800000   (4096 kB)
[    0.000000]     vmalloc : 0xdff80000 - 0xff3fe000   ( 500 MB)
[    0.000000]     lowmem  : 0xc0000000 - 0xdf780000   ( 503 MB)
[    0.000000]       .init : 0xc13a8000 - 0xc13fe000   ( 344 kB)
[    0.000000]       .data : 0xc12556a3 - 0xc13a776c   (1352 kB)
[    0.000000]       .text : 0xc1000000 - 0xc12556a3   (2389 kB)
[    0.000000] Checking if this processor honours the WP bit even in supervisor mode...Ok.
[    0.000000] Hierarchical RCU implementation.
[    0.000000] NR_IRQS:1280
[    0.000000] Console: colour VGA+ 80x25
[    0.000000] console [tty0] enabled
[    0.000000] Fast TSC calibration using PIT
[    0.000000] Detected 630.104 MHz processor.
[    0.008010] Calibrating delay loop (skipped), value calculated using timer frequency.. 1260.20 BogoMIPS (lpj=2520416)
[    0.012105] Security Framework initialized
[    0.012211] SELinux:  Disabled at boot.
[    0.012334] Mount-cache hash table entries: 512
[    0.012751] Initializing cgroup subsys ns
[    0.012849] Initializing cgroup subsys cpuacct
[    0.012949] Initializing cgroup subsys devices
[    0.013045] Initializing cgroup subsys freezer
[    0.013140] Initializing cgroup subsys net_cls
[    0.013303] mce: CPU supports 5 MCE banks
[    0.013412] CPU0: Thermal monitoring enabled (TM1)
[    0.013528] Performance Events: p6 PMU driver.
[    0.013691] ... version:                0
[    0.013784] ... bit width:              32
[    0.013878] ... generic registers:      2
[    0.013970] ... value mask:             00000000ffffffff
[    0.014069] ... max period:             000000007fffffff
[    0.014167] ... fixed-purpose events:   0
[    0.014259] ... event mask:             0000000000000003
[    0.014363] Checking 'hlt' instruction... OK.
[    0.028815] SMP alternatives: switching to UP code
[    0.034674] Freeing SMP alternatives: 11k freed
[    0.034781] ACPI: Core revision 20091214
[    0.064698] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1
[    0.106993] CPU0: Intel(R) Celeron(R) M processor          900MHz stepping 08
[    0.108000] APIC calibration not consistent with PM-Timer: 136ms instead of 100ms
[    0.108000] APIC delta adjusted to PM-Timer: 437544 (595094)
[    0.108000] Brought up 1 CPUs
[    0.108000] Total of 1 processors activated (1260.20 BogoMIPS).
[    0.108000] NET: Registered protocol family 16
[    0.108000] ACPI: bus type pci registered
[    0.108000] PCI: MMCONFIG for domain 0000 [bus 00-ff] at [mem 0xe0000000-0xefffffff] (base 0xe0000000)
[    0.108000] PCI: not using MMCONFIG
[    0.108000] PCI: PCI BIOS revision 3.00 entry at 0xf0031, last bus=5
[    0.108000] PCI: Using configuration type 1 for base access
[    0.109026] bio: create slab <bio-0> at 0
[    0.113575] ACPI: EC: Look up EC in DSDT
[    0.118729] ACPI: Executed 1 blocks of module-level executable AML code
[    0.140584] ACPI: Interpreter enabled
[    0.140712] ACPI: (supports S0 S3 S4 S5)
[    0.141052] ACPI: Using IOAPIC for interrupt routing
[    0.141313] PCI: MMCONFIG for domain 0000 [bus 00-ff] at [mem 0xe0000000-0xefffffff] (base 0xe0000000)
[    0.149074] PCI: MMCONFIG at [mem 0xe0000000-0xefffffff] reserved in ACPI motherboard resources
[    0.149218] PCI: Using MMCONFIG for extended config space
[    0.167902] ACPI: EC: GPE = 0x18, I/O: command/status = 0x66, data = 0x62
[    0.168736] ACPI: No dock devices found.
[    0.169334] ACPI: PCI Root Bridge [PCI0] (0000:00)
[    0.169515] pci_root PNP0A08:00: ignoring host bridge windows from ACPI; boot with "pci=use_crs" to use them
[    0.170550] pci_root PNP0A08:00: host bridge window [io  0x0000-0x0cf7] (ignored)
[    0.170560] pci_root PNP0A08:00: host bridge window [io  0x0d00-0xffff] (ignored)
[    0.170570] pci_root PNP0A08:00: host bridge window [mem 0x000a0000-0x000bffff] (ignored)
[    0.170580] pci_root PNP0A08:00: host bridge window [mem 0x000d0000-0x000dffff] (ignored)
[    0.170589] pci_root PNP0A08:00: host bridge window [mem 0x1f810000-0xffffffff] (ignored)
[    0.170723] pci 0000:00:02.0: reg 10: [mem 0xf7f00000-0xf7f7ffff]
[    0.170737] pci 0000:00:02.0: reg 14: [io  0xec00-0xec07]
[    0.170750] pci 0000:00:02.0: reg 18: [mem 0xd0000000-0xdfffffff pref]
[    0.170763] pci 0000:00:02.0: reg 1c: [mem 0xf7ec0000-0xf7efffff]
[    0.170834] pci 0000:00:02.1: reg 10: [mem 0xf7f80000-0xf7ffffff]
[    0.170977] pci 0000:00:1b.0: reg 10: [mem 0xf7eb8000-0xf7ebbfff 64bit]
[    0.171047] pci 0000:00:1b.0: PME# supported from D0 D3hot D3cold
[    0.171058] pci 0000:00:1b.0: PME# disabled
[    0.171170] pci 0000:00:1c.0: PME# supported from D0 D3hot D3cold
[    0.171180] pci 0000:00:1c.0: PME# disabled
[    0.171293] pci 0000:00:1c.1: PME# supported from D0 D3hot D3cold
[    0.171302] pci 0000:00:1c.1: PME# disabled
[    0.171416] pci 0000:00:1c.2: PME# supported from D0 D3hot D3cold
[    0.171425] pci 0000:00:1c.2: PME# disabled
[    0.171506] pci 0000:00:1d.0: reg 20: [io  0xe400-0xe41f]
[    0.171588] pci 0000:00:1d.1: reg 20: [io  0xe480-0xe49f]
[    0.171668] pci 0000:00:1d.2: reg 20: [io  0xe800-0xe81f]
[    0.171749] pci 0000:00:1d.3: reg 20: [io  0xe880-0xe89f]
[    0.171829] pci 0000:00:1d.7: reg 10: [mem 0xf7eb7c00-0xf7eb7fff]
[    0.171908] pci 0000:00:1d.7: PME# supported from D0 D3hot D3cold
[    0.171918] pci 0000:00:1d.7: PME# disabled
[    0.172141] pci 0000:00:1f.0: Force enabled HPET at 0xfed00000
[    0.172160] pci 0000:00:1f.0: quirk: [io  0x0800-0x087f] claimed by ICH6 ACPI/GPIO/TCO
[    0.172305] pci 0000:00:1f.0: quirk: [io  0x0480-0x04bf] claimed by ICH6 GPIO
[    0.172414] pci 0000:00:1f.0: LPC Generic IO decode 1 PIO at 0380-03ff
[    0.172565] pci 0000:00:1f.2: reg 10: [io  0x0000-0x0007]
[    0.172579] pci 0000:00:1f.2: reg 14: [io  0x0000-0x0003]
[    0.172593] pci 0000:00:1f.2: reg 18: [io  0x0000-0x0007]
[    0.172606] pci 0000:00:1f.2: reg 1c: [io  0x0000-0x0003]
[    0.172620] pci 0000:00:1f.2: reg 20: [io  0xffa0-0xffaf]
[    0.172662] pci 0000:00:1f.2: PME# supported from D3hot
[    0.172672] pci 0000:00:1f.2: PME# disabled
[    0.172741] pci 0000:00:1f.3: reg 20: [io  0x0400-0x041f]
[    0.172841] pci 0000:00:1c.0: PCI bridge to [bus 04-04]
[    0.173018] pci 0000:03:00.0: reg 10: [mem 0xfbfc0000-0xfbffffff 64bit]
[    0.173067] pci 0000:03:00.0: reg 30: [mem 0xfbfa0000-0xfbfbffff pref]
[    0.173123] pci 0000:03:00.0: PME# supported from D3hot D3cold
[    0.173133] pci 0000:03:00.0: PME# disabled
[    0.173210] pci 0000:00:1c.1: PCI bridge to [bus 03-03]
[    0.173316] pci 0000:00:1c.1:   bridge window [mem 0xfbf00000-0xfbffffff]
[    0.173394] pci 0000:01:00.0: reg 10: [mem 0xfbef0000-0xfbefffff 64bit]
[    0.173562] pci 0000:00:1c.2: PCI bridge to [bus 01-02]
[    0.173666] pci 0000:00:1c.2:   bridge window [mem 0xf8000000-0xfbefffff]
[    0.173682] pci 0000:00:1c.2:   bridge window [mem 0xf0000000-0xf6ffffff 64bit pref]
[    0.173758] pci 0000:00:1e.0: PCI bridge to [bus 05-05] (subtractive decode)
[    0.173901] pci_bus 0000:00: on NUMA node 0
[    0.173922] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
[    0.174451] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P3._PRT]
[    0.174638] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P5._PRT]
[    0.174800] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P6._PRT]
[    0.194578] ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 *5 6 7 10 11 12 14 15)
[    0.195594] ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 7 10 *11 12 14 15)
[    0.196584] ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 6 7 *10 11 12 14 15)
[    0.197582] ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 *7 10 11 12 14 15)
[    0.200368] ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 7 10 11 12 14 15) *0, disabled.
[    0.204886] ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 7 10 11 12 14 15) *0, disabled.
[    0.206009] ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 6 7 10 11 12 14 15) *0, disabled.
[    0.207126] ACPI: PCI Interrupt Link [LNKH] (IRQs *3 4 5 6 7 10 11 12 14 15)
[    0.208071] vgaarb: device added: PCI:0000:00:02.0,decodes=io+mem,owns=io+mem,locks=none
[    0.208228] vgaarb: loaded
[    0.208634] SCSI subsystem initialized
[    0.208875] libata version 3.00 loaded.
[    0.209050] PCI: Using ACPI for IRQ routing
[    0.209208] PCI: pci_cache_line_size set to 64 bytes
[    0.209944] hpet clockevent registered
[    0.209954] HPET: 3 timers in total, 0 timers will be used for per-cpu timer
[    0.210070] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0
[    0.210347] hpet0: 3 comparators, 64-bit 14.318180 MHz counter
[    0.216026] Switching to clocksource tsc
[    0.220095] pnp: PnP ACPI init
[    0.220238] ACPI: bus type pnp registered
[    0.226616] pnp: PnP ACPI: found 13 devices
[    0.226714] ACPI: ACPI bus type pnp unregistered
[    0.226815] PnPBIOS: Disabled by ACPI PNP
[    0.226943] system 00:01: [mem 0xfed13000-0xfed19fff] has been reserved
[    0.227066] system 00:08: [io  0x0380-0x0383] has been reserved
[    0.227170] system 00:08: [io  0x04d0-0x04d1] has been reserved
[    0.227273] system 00:08: [io  0x0800-0x087f] has been reserved
[    0.227377] system 00:08: [io  0x0480-0x04bf] has been reserved
[    0.227481] system 00:08: [mem 0xfed1c000-0xfed1ffff] has been reserved
[    0.227598] system 00:08: [mem 0xfed20000-0xfed8ffff] has been reserved
[    0.227705] system 00:08: [mem 0xfff00000-0xffffffff] could not be reserved
[    0.227839] system 00:09: [mem 0xfec00000-0xfec00fff] could not be reserved
[    0.227948] system 00:09: [mem 0xfee00000-0xfee00fff] has been reserved
[    0.228061] system 00:0a: [mem 0xe0000000-0xefffffff] has been reserved
[    0.228173] system 00:0b: [mem 0xe0000000-0xefffffff] has been reserved
[    0.228288] system 00:0c: [mem 0x00000000-0x0009ffff] could not be reserved
[    0.228396] system 00:0c: [mem 0x000c0000-0x000cffff] could not be reserved
[    0.228506] system 00:0c: [mem 0x000e0000-0x000fffff] could not be reserved
[    0.228615] system 00:0c: [mem 0x00100000-0x1f7fffff] could not be reserved
[    0.263698] pci 0000:00:1c.0: BAR 14: assigned [mem 0x20000000-0x201fffff]
[    0.263833] pci 0000:00:1c.0: BAR 15: assigned [mem 0x20200000-0x203fffff 64bit pref]
[    0.263974] pci 0000:00:1c.1: BAR 15: assigned [mem 0x20400000-0x205fffff 64bit pref]
[    0.264115] pci 0000:00:1c.0: BAR 13: assigned [io  0x1000-0x1fff]
[    0.264220] pci 0000:00:1c.1: BAR 13: assigned [io  0x2000-0x2fff]
[    0.264325] pci 0000:00:1c.2: BAR 13: assigned [io  0x3000-0x3fff]
[    0.264428] pci 0000:00:1c.0: PCI bridge to [bus 04-04]
[    0.264529] pci 0000:00:1c.0:   bridge window [io  0x1000-0x1fff]
[    0.264638] pci 0000:00:1c.0:   bridge window [mem 0x20000000-0x201fffff]
[    0.264748] pci 0000:00:1c.0:   bridge window [mem 0x20200000-0x203fffff 64bit pref]
[    0.264891] pci 0000:00:1c.1: PCI bridge to [bus 03-03]
[    0.264991] pci 0000:00:1c.1:   bridge window [io  0x2000-0x2fff]
[    0.265100] pci 0000:00:1c.1:   bridge window [mem 0xfbf00000-0xfbffffff]
[    0.265209] pci 0000:00:1c.1:   bridge window [mem 0x20400000-0x205fffff 64bit pref]
[    0.265352] pci 0000:00:1c.2: PCI bridge to [bus 01-02]
[    0.265452] pci 0000:00:1c.2:   bridge window [io  0x3000-0x3fff]
[    0.265560] pci 0000:00:1c.2:   bridge window [mem 0xf8000000-0xfbefffff]
[    0.265669] pci 0000:00:1c.2:   bridge window [mem 0xf0000000-0xf6ffffff 64bit pref]
[    0.265812] pci 0000:00:1e.0: PCI bridge to [bus 05-05]
[    0.265910] pci 0000:00:1e.0:   bridge window [io  disabled]
[    0.266014] pci 0000:00:1e.0:   bridge window [mem disabled]
[    0.266116] pci 0000:00:1e.0:   bridge window [mem pref disabled]
[    0.266242] pci 0000:00:1c.0: enabling device (0104 -> 0107)
[    0.266358] pci 0000:00:1c.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[    0.266467] pci 0000:00:1c.0: setting latency timer to 64
[    0.266483] pci 0000:00:1c.1: enabling device (0106 -> 0107)
[    0.266588] pci 0000:00:1c.1: PCI INT B -> GSI 17 (level, low) -> IRQ 17
[    0.266695] pci 0000:00:1c.1: setting latency timer to 64
[    0.266711] pci 0000:00:1c.2: enabling device (0106 -> 0107)
[    0.266816] pci 0000:00:1c.2: PCI INT C -> GSI 18 (level, low) -> IRQ 18
[    0.266922] pci 0000:00:1c.2: setting latency timer to 64
[    0.266936] pci 0000:00:1e.0: setting latency timer to 64
[    0.266947] pci_bus 0000:00: resource 0 [io  0x0000-0xffff]
[    0.266956] pci_bus 0000:00: resource 1 [mem 0x00000000-0xffffffff]
[    0.266965] pci_bus 0000:04: resource 0 [io  0x1000-0x1fff]
[    0.266974] pci_bus 0000:04: resource 1 [mem 0x20000000-0x201fffff]
[    0.266983] pci_bus 0000:04: resource 2 [mem 0x20200000-0x203fffff 64bit pref]
[    0.266993] pci_bus 0000:03: resource 0 [io  0x2000-0x2fff]
[    0.267001] pci_bus 0000:03: resource 1 [mem 0xfbf00000-0xfbffffff]
[    0.267010] pci_bus 0000:03: resource 2 [mem 0x20400000-0x205fffff 64bit pref]
[    0.267020] pci_bus 0000:01: resource 0 [io  0x3000-0x3fff]
[    0.267028] pci_bus 0000:01: resource 1 [mem 0xf8000000-0xfbefffff]
[    0.267037] pci_bus 0000:01: resource 2 [mem 0xf0000000-0xf6ffffff 64bit pref]
[    0.267047] pci_bus 0000:05: resource 3 [io  0x0000-0xffff]
[    0.267055] pci_bus 0000:05: resource 4 [mem 0x00000000-0xffffffff]
[    0.267177] NET: Registered protocol family 2
[    0.267440] IP route cache hash table entries: 4096 (order: 2, 16384 bytes)
[    0.268156] TCP established hash table entries: 16384 (order: 5, 131072 bytes)
[    0.268559] TCP bind hash table entries: 16384 (order: 5, 131072 bytes)
[    0.268922] TCP: Hash tables configured (established 16384 bind 16384)
[    0.269026] TCP reno registered
[    0.269119] UDP hash table entries: 256 (order: 1, 8192 bytes)
[    0.269239] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
[    0.269595] NET: Registered protocol family 1
[    0.269734] pci 0000:00:02.0: Boot video device
[    0.269918] PCI: CLS 16 bytes, default 64
[    0.270059] Unpacking initramfs...
[    0.562540] Freeing initrd memory: 2877k freed
[    0.568362] audit: initializing netlink socket (disabled)
[    0.568506] type=2000 audit(1265194685.567:1): initialized
[    0.569073] HugeTLB registered 4 MB page size, pre-allocated 0 pages
[    0.569436] VFS: Disk quotas dquot_6.5.2
[    0.569601] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[    0.569879] msgmni has been set to 987
[    0.570434] alg: No test for stdrng (krng)
[    0.570628] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 253)
[    0.570768] io scheduler noop registered
[    0.570860] io scheduler deadline registered
[    0.570983] io scheduler cfq registered (default)
[    0.571291] pcieport 0000:00:1c.0: setting latency timer to 64
[    0.571365] pcieport 0000:00:1c.0: irq 24 for MSI/MSI-X
[    0.571555] pcieport 0000:00:1c.1: setting latency timer to 64
[    0.571614] pcieport 0000:00:1c.1: irq 25 for MSI/MSI-X
[    0.571827] pcieport 0000:00:1c.2: setting latency timer to 64
[    0.571885] pcieport 0000:00:1c.2: irq 26 for MSI/MSI-X
[    0.572350] isapnp: Scanning for PnP cards...
[    0.926185] isapnp: No Plug & Play device found
[    0.929540] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[    0.930761] PNP: PS/2 Controller [PNP0303:PS2K,PNP0f13:PS2M] at 0x60,0x64 irq 1,12
[    0.950681] serio: i8042 KBD port at 0x60,0x64 irq 1
[    0.950793] serio: i8042 AUX port at 0x60,0x64 irq 12
[    0.951144] mice: PS/2 mouse device common for all mice
[    0.952026] rtc_cmos 00:03: RTC can wake from S4
[    0.952227] rtc_cmos 00:03: rtc core: registered rtc_cmos as rtc0
[    0.952364] rtc0: alarms up to one month, 114 bytes nvram, hpet irqs
[    0.952499] cpuidle: using governor ladder
[    0.952592] cpuidle: using governor menu
[    0.952689] No iBFT detected.
[    0.953440] TCP cubic registered
[    0.953623] NET: Registered protocol family 10
[    0.954707] lo: Disabled Privacy Extensions
[    0.955432] Mobile IPv6
[    0.955520] NET: Registered protocol family 17
[    0.955655] Using IPI No-Shortcut mode
[    0.971264] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input0
[    0.982615] registered taskstats version 1
[    0.983212] rtc_cmos 00:03: setting system clock to 2010-02-03 10:58:07 UTC (1265194687)
[    0.983486] Freeing unused kernel memory: 344k freed
[    0.984088] Write protecting the kernel text: 2392k
[    0.984234] Write protecting the kernel read-only data: 956k
[    1.067477] ata_piix 0000:00:1f.2: version 2.13
[    1.067536] ata_piix 0000:00:1f.2: PCI INT B -> GSI 19 (level, low) -> IRQ 19
[    1.067682] ata_piix 0000:00:1f.2: MAP [ P0 P2 IDE IDE ]
[    1.068070] ata_piix 0000:00:1f.2: setting latency timer to 64
[    1.068267] scsi0 : ata_piix
[    1.068625] scsi1 : ata_piix
[    1.074712] ata1: SATA max UDMA/133 cmd 0x1f0 ctl 0x3f6 bmdma 0xffa0 irq 14
[    1.074822] ata2: PATA max UDMA/100 cmd 0x170 ctl 0x376 bmdma 0xffa8 irq 15
[    1.244375] ata2.00: CFA: SILICONMOTION SM223AC, , max UDMA/66
[    1.244483] ata2.00: 7815024 sectors, multi 0: LBA 
[    1.260316] ata2.00: configured for UDMA/66
[    1.260715] scsi 1:0:0:0: Direct-Access     ATA      SILICONMOTION SM n/a  PQ: 0 ANSI: 5
[    1.322406] thermal LNXTHERM:01: registered as thermal_zone0
[    1.322567] ACPI: Thermal Zone [TZ00] (52 C)
[    1.782601] sd 1:0:0:0: [sda] 7815024 512-byte logical blocks: (4.00 GB/3.72 GiB)
[    1.782895] sd 1:0:0:0: [sda] Write Protect is off
[    1.782994] sd 1:0:0:0: [sda] Mode Sense: 00 3a 00 00
[    1.783064] sd 1:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[    1.783589]  sda: sda1 sda2
[    1.785813] sd 1:0:0:0: [sda] Attached SCSI disk
[    1.889816] PM: Starting manual resume from disk
[    2.012842] EXT4-fs (sda2): mounted filesystem without journal
[    2.585879] udev: starting version 150
[    3.081396] Atheros(R) L2 Ethernet Driver - version 2.2.3
[    3.081505] Copyright (c) 2007 Atheros Corporation.
[    3.081674] atl2 0000:03:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[    3.081797] atl2 0000:03:00.0: setting latency timer to 64
[    3.092582] input: Lid Switch as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0D:00/input/input1
[    3.131617] ACPI: Lid Switch [LID]
[    3.131932] input: Sleep Button as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0E:00/input/input2
[    3.132159] ACPI: Sleep Button [SLPB]
[    3.132411] input: Power Button as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0C:00/input/input3
[    3.132555] ACPI: Power Button [PWRB]
[    3.132799] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input4
[    3.132938] ACPI: Power Button [PWRF]
[    3.250748] Linux agpgart interface v0.103
[    3.392738] usbcore: registered new interface driver usbfs
[    3.414244] ACPI: AC Adapter [AC0] (on-line)
[    3.418546] pci_hotplug: PCI Hot Plug PCI Core version: 0.5
[    3.448308] ACPI: Battery Slot [BAT0] (battery absent)
[    3.460284] usbcore: registered new interface driver hub
[    3.463246] usbcore: registered new device driver usb
[    3.481342] Marking TSC unstable due to TSC halts in idle
[    3.505328] Switching to clocksource hpet
[    3.549645] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    3.549855] ehci_hcd 0000:00:1d.7: PCI INT A -> GSI 23 (level, low) -> IRQ 23
[    3.550022] ehci_hcd 0000:00:1d.7: setting latency timer to 64
[    3.550032] ehci_hcd 0000:00:1d.7: EHCI Host Controller
[    3.550195] ehci_hcd 0000:00:1d.7: new USB bus registered, assigned bus number 1
[    3.550392] ehci_hcd 0000:00:1d.7: debug port 1
[    3.554375] ehci_hcd 0000:00:1d.7: cache line size of 16 is not supported
[    3.611792] ehci_hcd 0000:00:1d.7: irq 23, io mem 0xf7eb7c00
[    3.653027] ehci_hcd 0000:00:1d.7: USB 2.0 started, EHCI 1.00
[    3.653225] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[    3.653332] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    3.653467] usb usb1: Product: EHCI Host Controller
[    3.653564] usb usb1: Manufacturer: Linux 2.6.33-rc6eeepc-00001-gd37a207-dirty ehci_hcd
[    3.653702] usb usb1: SerialNumber: 0000:00:1d.7
[    3.654422] hub 1-0:1.0: USB hub found
[    3.654530] hub 1-0:1.0: 8 ports detected
[    3.654813] agpgart-intel 0000:00:00.0: Intel 915GM Chipset
[    3.655351] agpgart-intel 0000:00:00.0: detected 7932K stolen memory
[    3.679343] input: Video Bus as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input5
[    3.679736] ACPI: Video Device [VGA] (multi-head: yes  rom: no  post: no)
[    3.683218] agpgart-intel 0000:00:00.0: AGP aperture is 256M @ 0xd0000000
[    3.701484] uhci_hcd: USB Universal Host Controller Interface driver
[    3.701746] uhci_hcd 0000:00:1d.0: PCI INT A -> GSI 23 (level, low) -> IRQ 23
[    3.701872] uhci_hcd 0000:00:1d.0: setting latency timer to 64
[    3.701881] uhci_hcd 0000:00:1d.0: UHCI Host Controller
[    3.702013] uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 2
[    3.745282] uhci_hcd 0000:00:1d.0: irq 23, io base 0x0000e400
[    3.745505] usb usb2: New USB device found, idVendor=1d6b, idProduct=0001
[    3.745613] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    3.745776] usb usb2: Product: UHCI Host Controller
[    3.745960] usb usb2: Manufacturer: Linux 2.6.33-rc6eeepc-00001-gd37a207-dirty uhci_hcd
[    3.746100] usb usb2: SerialNumber: 0000:00:1d.0
[    3.747794] hub 2-0:1.0: USB hub found
[    3.747904] hub 2-0:1.0: 2 ports detected
[    3.748230] uhci_hcd 0000:00:1d.1: PCI INT B -> GSI 19 (level, low) -> IRQ 19
[    3.748354] uhci_hcd 0000:00:1d.1: setting latency timer to 64
[    3.748364] uhci_hcd 0000:00:1d.1: UHCI Host Controller
[    3.748479] uhci_hcd 0000:00:1d.1: new USB bus registered, assigned bus number 3
[    3.748679] uhci_hcd 0000:00:1d.1: irq 19, io base 0x0000e480
[    3.748865] usb usb3: New USB device found, idVendor=1d6b, idProduct=0001
[    3.748971] usb usb3: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    3.749105] usb usb3: Product: UHCI Host Controller
[    3.749201] usb usb3: Manufacturer: Linux 2.6.33-rc6eeepc-00001-gd37a207-dirty uhci_hcd
[    3.749339] usb usb3: SerialNumber: 0000:00:1d.1
[    3.759079] hub 3-0:1.0: USB hub found
[    3.759200] hub 3-0:1.0: 2 ports detected
[    3.759451] uhci_hcd 0000:00:1d.2: PCI INT C -> GSI 18 (level, low) -> IRQ 18
[    3.759575] uhci_hcd 0000:00:1d.2: setting latency timer to 64
[    3.759584] uhci_hcd 0000:00:1d.2: UHCI Host Controller
[    3.759701] uhci_hcd 0000:00:1d.2: new USB bus registered, assigned bus number 4
[    3.759902] uhci_hcd 0000:00:1d.2: irq 18, io base 0x0000e800
[    3.760156] usb usb4: New USB device found, idVendor=1d6b, idProduct=0001
[    3.760265] usb usb4: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    3.760400] usb usb4: Product: UHCI Host Controller
[    3.760496] usb usb4: Manufacturer: Linux 2.6.33-rc6eeepc-00001-gd37a207-dirty uhci_hcd
[    3.760652] usb usb4: SerialNumber: 0000:00:1d.2
[    3.773611] hub 4-0:1.0: USB hub found
[    3.773734] hub 4-0:1.0: 2 ports detected
[    3.773990] uhci_hcd 0000:00:1d.3: PCI INT D -> GSI 16 (level, low) -> IRQ 16
[    3.774112] uhci_hcd 0000:00:1d.3: setting latency timer to 64
[    3.774124] uhci_hcd 0000:00:1d.3: UHCI Host Controller
[    3.774239] uhci_hcd 0000:00:1d.3: new USB bus registered, assigned bus number 5
[    3.774444] uhci_hcd 0000:00:1d.3: irq 16, io base 0x0000e880
[    3.774637] usb usb5: New USB device found, idVendor=1d6b, idProduct=0001
[    3.774743] usb usb5: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    3.774881] usb usb5: Product: UHCI Host Controller
[    3.774977] usb usb5: Manufacturer: Linux 2.6.33-rc6eeepc-00001-gd37a207-dirty uhci_hcd
[    3.775116] usb usb5: SerialNumber: 0000:00:1d.3
[    3.775796] hub 5-0:1.0: USB hub found
[    3.775913] hub 5-0:1.0: 2 ports detected
[    3.816072] cfg80211: Using static regulatory domain info
[    3.816186] cfg80211: Regulatory domain: 00
[    3.816280]     (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[    3.816422]     (2402000 KHz - 2472000 KHz @ 40000 KHz), (600 mBi, 2000 mBm)
[    3.816531]     (2457000 KHz - 2482000 KHz @ 20000 KHz), (600 mBi, 2000 mBm)
[    3.816639]     (2474000 KHz - 2494000 KHz @ 20000 KHz), (600 mBi, 2000 mBm)
[    3.816748]     (5170000 KHz - 5250000 KHz @ 40000 KHz), (600 mBi, 2000 mBm)
[    3.816856]     (5735000 KHz - 5835000 KHz @ 40000 KHz), (600 mBi, 2000 mBm)
[    3.817859] cfg80211: Calling CRDA to update world regulatory domain
[    3.964097] usb 1-5: new high speed USB device using ehci_hcd and address 2
[    3.977857] eeepc_laptop: Eee PC Hotkey Driver
[    3.977967] eeepc_laptop: model 701 does not officially support setting cpu speed
[    3.978104] eeepc_laptop: cpufv disabled to avoid instability
[    3.978244] eeepc_laptop: Hotkey init flags 0x41
[    3.979868] eeepc_laptop: TYPE (2000000) not reported by BIOS, enabling anyway
[    4.025389] eeepc_laptop: Get control methods supported: 0x2101711
[    4.043076] input: Asus EeePC extra buttons as /devices/platform/eeepc/input/input6
[    4.096822] ath5k 0000:01:00.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18
[    4.096953] ath5k 0000:01:00.0: setting latency timer to 64
[    4.097042] ath5k 0000:01:00.0: registered as 'phy0'
[    4.554482] usb 1-5: New USB device found, idVendor=0951, idProduct=1606
[    4.554603] usb 1-5: New USB device strings: Mfr=1, Product=2, SerialNumber=4
[    4.554713] usb 1-5: Product: UB6225
[    4.554808] usb 1-5: Manufacturer: ENE
[    4.554902] usb 1-5: SerialNumber: 146030377350
[    4.632207] Initializing USB Mass Storage driver...
[    4.635302] scsi2 : usb-storage 1-5:1.0
[    4.640843] usbcore: registered new interface driver usb-storage
[    4.640953] USB Mass Storage support registered.
[    4.698521] usb 1-8: new high speed USB device using ehci_hcd and address 3
[    4.709122] ath: EEPROM regdomain: 0x60
[    4.709131] ath: EEPROM indicates we should expect a direct regpair map
[    4.709145] ath: Country alpha2 being used: 00
[    4.709150] ath: Regpair used: 0x60
[    4.868635] usb 1-8: New USB device found, idVendor=eb1a, idProduct=2761
[    4.868756] usb 1-8: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[    4.908115] HDA Intel 0000:00:1b.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[    4.908376] HDA Intel 0000:00:1b.0: irq 27 for MSI/MSI-X
[    4.908436] HDA Intel 0000:00:1b.0: setting latency timer to 64
[    4.951909] Linux video capture interface: v2.00
[    4.978939] uvcvideo: Found UVC 1.00 device <unnamed> (eb1a:2761)
[    5.022812] input: HDA Digital PCBeep as /devices/pci0000:00/0000:00:1b.0/input/input7
[    5.099207] Synaptics Touchpad, model: 1, fw: 6.5, id: 0x1c0b1, caps: 0xa04751/0xa00000
[    5.177528] input: SynPS/2 Synaptics TouchPad as /devices/platform/i8042/serio1/input/input8
[    5.298565] phy0: Selected rate control algorithm 'minstrel'
[    5.300694] Registered led device: ath5k-phy0::rx
[    5.300961] Registered led device: ath5k-phy0::tx
[    5.301068] ath5k phy0: Atheros AR2425 chip found (MAC: 0xe2, PHY: 0x70)
[    5.437918] input: UVC Camera (eb1a:2761) as /devices/pci0000:00/0000:00:1d.7/usb1/1-8/1-8:1.0/input/input9
[    5.438210] usbcore: registered new interface driver uvcvideo
[    5.438312] USB Video Class driver (v0.1.0)
[    6.223725] loop: module loaded
[    6.733776] Adding 358392k swap on /swapfile.  Priority:-1 extents:48 across:1567744k 
[    9.063985] fuse init (API version 7.13)
[    9.640903] scsi 2:0:0:0: Direct-Access     USB2.0   CardReader SD0   0100 PQ: 0 ANSI: 0
[   10.018854] sd 2:0:0:0: [sdb] 15660032 512-byte logical blocks: (8.01 GB/7.46 GiB)
[   10.019584] sd 2:0:0:0: [sdb] Write Protect is off
[   10.019685] sd 2:0:0:0: [sdb] Mode Sense: 03 00 00 00
[   10.019693] sd 2:0:0:0: [sdb] Assuming drive cache: write through
[   10.023706] sd 2:0:0:0: [sdb] Assuming drive cache: write through
[   10.023824]  sdb: sdb1
[   10.030114] sd 2:0:0:0: [sdb] Assuming drive cache: write through
[   10.030230] sd 2:0:0:0: [sdb] Attached SCSI removable disk
[   14.173849] atl2 0000:03:00.0: irq 28 for MSI/MSI-X
[   14.174122] ADDRCONF(NETDEV_UP): eth0: link is not ready
[   14.204447] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[   14.379066] atl2: eth0 NIC Link is Up<100 Mbps Full Duplex>
[   14.379286] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[   15.413243] [drm] Initialized drm 1.1.0 20060810
[   15.508270] i915 0000:00:02.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[   15.508290] i915 0000:00:02.0: setting latency timer to 64
[   15.530891] [drm] set up 7M of stolen space
[   15.572380] [drm] initialized overlay support
[   16.383650] Console: switching to colour frame buffer device 100x30
[   16.383679] fb0: inteldrmfb frame buffer device
[   16.383685] registered panic notifier
[   16.383708] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0
[   16.494772] render error detected, EIR: 0x00000010
[   16.494785] page table error
[   16.494790]   PGTBL_ER: 0x00000010
[   16.494799] [drm:i915_handle_error] *ERROR* EIR stuck: 0x00000010, masking
[   16.494832] render error detected, EIR: 0x00000010
[   16.494837] page table error
[   16.494842]   PGTBL_ER: 0x00000010
[   24.472089] eth0: no IPv6 routers present
[  116.062393] Syncing filesystems ... done.
[  116.070778] Freezing user space processes ... (elapsed 0.01 seconds) done.
[  116.084184] Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.
[  116.100338] PM: Preallocating image memory... Requested image size: 89598 pages
[  116.133873] count = 127220, highmem = 0, max_size = 62579, saveable = 103519
[  116.134032] Target image size: 62579 pages
[  116.134130] Minimum image size: 27245 pages
[  116.555223] Minimum image size: 27429 pages
[  116.555344] pages_highmem = 0, alloc = 64641
[  116.916302] pages = 64641
[  116.916380] alloc_highmem = 0, alloc = 0
[  116.916474] pages = 64641
[  116.916540] pages = 64641, pages_highmem = 0, count - pages = 62579
[  116.943942] Freeing 1708 normal and 0 highmem preallocated pages
[  116.944142] done (allocated 64641 pages)
[  116.944242] PM: Allocated 258564 kbytes in 0.84 seconds (307.81 MB/s)
[  117.148419] ACPI handle has no context!
[  117.148532] atl2 0000:03:00.0: PCI INT A disabled
[  117.148647] ACPI handle has no context!
[  117.164253] ata_piix 0000:00:1f.2: PCI INT B disabled
[  117.164432] HDA Intel 0000:00:1b.0: PCI INT A disabled
[  117.187346] PM: freeze of devices complete after 242.679 msecs
[  117.188401] PM: late freeze of devices complete after 0.896 msecs
[  117.588356] Disabling non-boot CPUs ...
[  117.588719] PM: Creating hibernation image: 
[  117.592004] PM: Need to copy 62462 pages
[  117.592004] Force enabled HPET at resume
[  117.592004] HDA Intel 0000:00:1b.0: restoring config space at offset 0x1 (was 0x100006, writing 0x100002)
[  117.592454] ata_piix 0000:00:1f.2: restoring config space at offset 0x1 (was 0x2b00001, writing 0x2b00005)
[  117.598890] PM: early restore of devices complete after 10.234 msecs
[  117.675508] i915 0000:00:02.0: setting latency timer to 64
[  118.120057] render error detected, EIR: 0x00000010
[  118.123095] page table error
[  118.124043]   PGTBL_ER: 0x00000010
[  118.124043] [drm:i915_handle_error] *ERROR* EIR stuck: 0x00000010, masking
[  118.124043] render error detected, EIR: 0x00000010
[  118.124043] page table error
[  118.124043]   PGTBL_ER: 0x00000010
[  118.703190] HDA Intel 0000:00:1b.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[  118.706432] HDA Intel 0000:00:1b.0: setting latency timer to 64
[  118.709876] HDA Intel 0000:00:1b.0: irq 27 for MSI/MSI-X
[  118.713120] uhci_hcd 0000:00:1d.0: setting latency timer to 64
[  118.716339] usb usb2: root hub lost power or was reset
[  118.719520] uhci_hcd 0000:00:1d.1: setting latency timer to 64
[  118.722704] usb usb3: root hub lost power or was reset
[  118.725889] uhci_hcd 0000:00:1d.2: setting latency timer to 64
[  118.729129] usb usb4: root hub lost power or was reset
[  118.732362] uhci_hcd 0000:00:1d.3: setting latency timer to 64
[  118.735607] usb usb5: root hub lost power or was reset
[  118.738853] ehci_hcd 0000:00:1d.7: setting latency timer to 64
[  118.742089] usb usb1: root hub lost power or was reset
[  118.749170] ehci_hcd 0000:00:1d.7: cache line size of 16 is not supported
[  118.752464] pci 0000:00:1e.0: setting latency timer to 64
[  118.755762] ata_piix 0000:00:1f.2: PCI INT B -> GSI 19 (level, low) -> IRQ 19
[  118.759155] ata_piix 0000:00:1f.2: setting latency timer to 64
[  118.770268] atl2 0000:03:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[  118.773555] atl2 0000:03:00.0: setting latency timer to 64
[  118.790590] sd 1:0:0:0: [sda] Starting disk
[  118.940434] ata2.00: ACPI cmd ef/03:44:00:00:00:a0 (SET FEATURES) filtered out
[  118.943543] ata2.00: ACPI cmd ef/03:0c:00:00:00:a0 (SET FEATURES) filtered out
[  118.960374] ata2.00: configured for UDMA/66
[  119.308054] usb 1-5: reset high speed USB device using ehci_hcd and address 2
[  119.445151] PM: restore of devices complete after 1791.491 msecs
[  119.461021] Restarting tasks ... done.
[  119.572288] usb 1-8: reset high speed USB device using ehci_hcd and address 3
[  120.892151] atl2 0000:03:00.0: irq 28 for MSI/MSI-X
[  120.892402] ADDRCONF(NETDEV_UP): eth0: link is not ready
[  120.908471] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[  122.423156] atl2: eth0 NIC Link is Up<100 Mbps Full Duplex>
[  122.423288] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[  133.096086] eth0: no IPv6 routers present

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s2disk hang update

[Alan Jenkins]

Hi,

I've been suffering from s2disk hangs again.  This time, the hangs
were always before the hibernation image was written out.

They're still frustratingly random.  I just started trying to work out
whether doubling PAGES_FOR_IO makes them go away, but they went away
on their own again.

I did manage to capture a backtrace with debug info though.  Here it
is for 2.6.33-rc2.  (It has also happened on rc1).  I was able to get
the line numbers (using gdb, e.g.  "info line
*stop_machine_create+0x27"), having built the kernel with debug info.

[top of trace lost due to screen height]
? sync_page	(filemap.c:183)
? wait_on_page_bit	(filemap.c:506)
? wake_bit_function	(wait.c:174)
? shrink_page_list	(vmscan.c:696)
? __delayacct_blkio_end	(delayacct.c:94)
? finish_wait	(list.h:142)
? congestion_wait	(backing-dev.c:761)
? shrink_inactive_list	(vmscan.c:1193)
? scsi_request_fn	(spinlock.h:306)
? blk_run_queue	(blk-core.c:434)
? shrink_zone	(vmscan.c:1484)
? do_try_to_free_pages	(vmscan.c:1684)
? try_to_free_pages	(vmscan.c:1848)
? isolate_pages_global	(vmscan.c:980)
? __alloc_pages_nodemask	(page_alloc.c:1702)
? __get_free_pages	(page_alloc.c:1990)
? copy_process	(fork.c:237)
? do_fork	(fork.c:1443)
? rb_erase
? __switch_to
? kthread
? kernel_thread
? kthread
? kernel_thread_helper
? kthreadd
? kthreadd
? kernel_thread_helper

INFO: task s2disk:2174 blocked for more than 120 seconds
...
Call Trace:
? __switch_to
? schedule_timeout
? check_preempt_wakeup
? wait_for_common
? default_wake_function
? kthread_create:133
? worker_thread
? schedule
? create_workqueue_thread
? worker_thread
? __create_workqueue_key (workqueue.c:1006)
? stop_machine_create (stop_machine.c:121)
? disable_nonboot_cpus (cpu.c:370)
? hibernation_snapshot
? snapshot_ioctl
...
? sys_ioctl


Thanks for everything
Alan