* [PATCH RT 0/5] Linux 4.1.35-rt41-rc1
@ 2016-10-30 16:46 Steven Rostedt
2016-10-30 16:46 ` [PATCH RT 1/5] ftrace: Fix trace header alignment Steven Rostedt
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: Steven Rostedt @ 2016-10-30 16:46 UTC (permalink / raw)
To: linux-kernel, linux-rt-users
Cc: Thomas Gleixner, Carsten Emde, Sebastian Andrzej Siewior,
John Kacur, Paul Gortmaker
Dear RT Folks,
This is the RT stable review cycle of patch 4.1.35-rt41-rc1.
Please scream at me if I messed something up. Please test the patches too.
The -rc release will be uploaded to kernel.org and will be deleted when
the final release is out. This is just a review release (or release candidate).
The pre-releases will not be pushed to the git repository, only the
final release is.
If all goes well, this patch will be converted to the next main release
on 11/2/2016.
Enjoy,
-- Steve
To build 4.1.35-rt41-rc1 directly, the following patches should be applied:
http://www.kernel.org/pub/linux/kernel/v4.x/linux-4.1.tar.xz
http://www.kernel.org/pub/linux/kernel/v4.x/patch-4.1.35.xz
http://www.kernel.org/pub/linux/kernel/projects/rt/4.1/patch-4.1.35-rt41-rc1.patch.xz
You can also build from 4.1.35-rt40 by applying the incremental patch:
http://www.kernel.org/pub/linux/kernel/projects/rt/4.1/incr/patch-4.1.35-rt40-rt41-rc1.patch.xz
Changes from 4.1.35-rt40:
---
Mike Galbraith (1):
ftrace: Fix trace header alignment
Sebastian Andrzej Siewior (3):
zsmalloc: turn that get_cpu_light() into a local_lock()
x86/apic: get rid of "warning: 'acpi_ioapic_lock' defined but not used"
kbuild: add -fno-PIE
Steven Rostedt (Red Hat) (1):
Linux 4.1.35-rt41-rc1
----
Makefile | 2 +-
arch/x86/kernel/acpi/boot.c | 2 ++
kernel/trace/trace.c | 32 ++++++++++++++++----------------
localversion-rt | 2 +-
mm/zsmalloc.c | 6 ++++--
5 files changed, 24 insertions(+), 20 deletions(-)
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH RT 1/5] ftrace: Fix trace header alignment
2016-10-30 16:46 [PATCH RT 0/5] Linux 4.1.35-rt41-rc1 Steven Rostedt
@ 2016-10-30 16:46 ` Steven Rostedt
2016-10-30 16:46 ` [PATCH RT 2/5] zsmalloc: turn that get_cpu_light() into a local_lock() Steven Rostedt
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: Steven Rostedt @ 2016-10-30 16:46 UTC (permalink / raw)
To: linux-kernel, linux-rt-users
Cc: Thomas Gleixner, Carsten Emde, Sebastian Andrzej Siewior,
John Kacur, Paul Gortmaker, stable-rt, Mike Galbraith
[-- Attachment #1: 0001-ftrace-Fix-trace-header-alignment.patch --]
[-- Type: text/plain, Size: 3299 bytes --]
4.1.35-rt41-rc1 stable review patch.
If anyone has any objections, please let me know.
------------------
From: Mike Galbraith <umgwanakikbuti@gmail.com>
Line up helper arrows to the right column.
Cc: stable-rt@vger.kernel.org
Signed-off-by: Mike Galbraith <umgwanakikbuti@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
[bigeasy: fixup function tracer header]
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
kernel/trace/trace.c | 32 ++++++++++++++++----------------
1 file changed, 16 insertions(+), 16 deletions(-)
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index af8b5e5469bf..9c5e5f8e61f5 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -2562,17 +2562,17 @@ get_total_entries(struct trace_buffer *buf,
static void print_lat_help_header(struct seq_file *m)
{
- seq_puts(m, "# _--------=> CPU# \n"
- "# / _-------=> irqs-off \n"
- "# | / _------=> need-resched \n"
- "# || / _-----=> need-resched_lazy \n"
- "# ||| / _----=> hardirq/softirq \n"
- "# |||| / _---=> preempt-depth \n"
- "# ||||| / _--=> preempt-lazy-depth\n"
- "# |||||| / _-=> migrate-disable \n"
- "# ||||||| / delay \n"
- "# cmd pid |||||||| time | caller \n"
- "# \\ / |||||||| \\ | / \n");
+ seq_puts(m, "# _--------=> CPU# \n"
+ "# / _-------=> irqs-off \n"
+ "# | / _------=> need-resched \n"
+ "# || / _-----=> need-resched_lazy \n"
+ "# ||| / _----=> hardirq/softirq \n"
+ "# |||| / _---=> preempt-depth \n"
+ "# ||||| / _--=> preempt-lazy-depth\n"
+ "# |||||| / _-=> migrate-disable \n"
+ "# ||||||| / delay \n"
+ "# cmd pid |||||||| time | caller \n"
+ "# \\ / |||||||| \\ | / \n");
}
static void print_event_info(struct trace_buffer *buf, struct seq_file *m)
@@ -2601,11 +2601,11 @@ static void print_func_help_header_irq(struct trace_buffer *buf, struct seq_file
"# |/ _-----=> need-resched_lazy\n"
"# || / _---=> hardirq/softirq\n"
"# ||| / _--=> preempt-depth\n"
- "# |||| /_--=> preempt-lazy-depth\n"
- "# ||||| _-=> migrate-disable \n"
- "# ||||| / delay\n"
- "# TASK-PID CPU# |||||| TIMESTAMP FUNCTION\n"
- "# | | | |||||| | |\n");
+ "# |||| / _-=> preempt-lazy-depth\n"
+ "# ||||| / _-=> migrate-disable \n"
+ "# |||||| / delay\n"
+ "# TASK-PID CPU# ||||||| TIMESTAMP FUNCTION\n"
+ "# | | | ||||||| | |\n");
}
void
--
2.9.3
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH RT 2/5] zsmalloc: turn that get_cpu_light() into a local_lock()
2016-10-30 16:46 [PATCH RT 0/5] Linux 4.1.35-rt41-rc1 Steven Rostedt
2016-10-30 16:46 ` [PATCH RT 1/5] ftrace: Fix trace header alignment Steven Rostedt
@ 2016-10-30 16:46 ` Steven Rostedt
2016-10-30 16:46 ` [PATCH RT 3/5] x86/apic: get rid of "warning: acpi_ioapic_lock defined but not used" Steven Rostedt
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: Steven Rostedt @ 2016-10-30 16:46 UTC (permalink / raw)
To: linux-kernel, linux-rt-users
Cc: Thomas Gleixner, Carsten Emde, Sebastian Andrzej Siewior,
John Kacur, Paul Gortmaker, stable-rt
[-- Attachment #1: 0002-zsmalloc-turn-that-get_cpu_light-into-a-local_lock.patch --]
[-- Type: text/plain, Size: 1838 bytes --]
4.1.35-rt41-rc1 stable review patch.
If anyone has any objections, please let me know.
------------------
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We might get preempted, grab the same ressource again and then corrupt
the memory.
Cc: stable-rt@vger.kernel.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
mm/zsmalloc.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index e819dffd142c..873d9bdb94fd 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -68,6 +68,7 @@
#include <linux/debugfs.h>
#include <linux/zsmalloc.h>
#include <linux/zpool.h>
+#include <linux/locallock.h>
/*
* This must be power of 2 and greater than of equal to sizeof(link_free).
@@ -398,6 +399,7 @@ static unsigned int get_maxobj_per_zspage(int size, int pages_per_zspage)
/* per-cpu VM mapping areas for zspage accesses that cross page boundaries */
static DEFINE_PER_CPU(struct mapping_area, zs_map_area);
+static DEFINE_LOCAL_IRQ_LOCK(zs_map_area_lock);
static int is_first_page(struct page *page)
{
@@ -1289,7 +1291,7 @@ void *zs_map_object(struct zs_pool *pool, unsigned long handle,
class = pool->size_class[class_idx];
off = obj_idx_to_offset(page, obj_idx, class->size);
- area = per_cpu_ptr(&zs_map_area, get_cpu_light());
+ area = &get_locked_var(zs_map_area_lock, zs_map_area);
area->vm_mm = mm;
if (off + class->size <= PAGE_SIZE) {
/* this object is contained entirely within a page */
@@ -1342,7 +1344,7 @@ void zs_unmap_object(struct zs_pool *pool, unsigned long handle)
__zs_unmap_object(area, pages, off, class->size);
}
- put_cpu_light();
+ put_locked_var(zs_map_area_lock, zs_map_area);
unpin_tag(handle);
}
EXPORT_SYMBOL_GPL(zs_unmap_object);
--
2.9.3
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH RT 3/5] x86/apic: get rid of "warning: acpi_ioapic_lock defined but not used"
2016-10-30 16:46 [PATCH RT 0/5] Linux 4.1.35-rt41-rc1 Steven Rostedt
2016-10-30 16:46 ` [PATCH RT 1/5] ftrace: Fix trace header alignment Steven Rostedt
2016-10-30 16:46 ` [PATCH RT 2/5] zsmalloc: turn that get_cpu_light() into a local_lock() Steven Rostedt
@ 2016-10-30 16:46 ` Steven Rostedt
2016-10-30 16:46 ` [PATCH RT 4/5] kbuild: add -fno-PIE Steven Rostedt
2016-10-30 16:46 ` [PATCH RT 5/5] Linux 4.1.35-rt41-rc1 Steven Rostedt
4 siblings, 0 replies; 6+ messages in thread
From: Steven Rostedt @ 2016-10-30 16:46 UTC (permalink / raw)
To: linux-kernel, linux-rt-users
Cc: Thomas Gleixner, Carsten Emde, Sebastian Andrzej Siewior,
John Kacur, Paul Gortmaker, kbuild test robot
[-- Attachment #1: 0003-x86-apic-get-rid-of-warning-acpi_ioapic_lock-defined.patch --]
[-- Type: text/plain, Size: 1921 bytes --]
4.1.35-rt41-rc1 stable review patch.
If anyone has any objections, please let me know.
------------------
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
kbuild test robot reported this against the -RT tree:
| In file included from include/linux/mutex.h:30:0,
| from include/linux/notifier.h:13,
| from include/linux/memory_hotplug.h:6,
| from include/linux/mmzone.h:777,
| from include/linux/gfp.h:5,
| from include/linux/slab.h:14,
| from include/linux/resource_ext.h:19,
| from include/linux/acpi.h:26,
| from arch/x86/kernel/acpi/boot.c:27:
|>> arch/x86/kernel/acpi/boot.c:90:21: warning: 'acpi_ioapic_lock' defined but not used [-Wunused-variable]
| static DEFINE_MUTEX(acpi_ioapic_lock);
| ^
| include/linux/mutex_rt.h:27:15: note: in definition of macro 'DEFINE_MUTEX'
| struct mutex mutexname = __MUTEX_INITIALIZER(mutexname)
^~~~~~~~~
which is also true (as in non-used) for !RT but the compiler does not
emit a warning.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
arch/x86/kernel/acpi/boot.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 07bea80223f6..cb66b0ea2d68 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -87,7 +87,9 @@ static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
* ->ioapic_mutex
* ->ioapic_lock
*/
+#ifdef CONFIG_X86_IO_APIC
static DEFINE_MUTEX(acpi_ioapic_lock);
+#endif
/* --------------------------------------------------------------------------
Boot-time Configuration
--
2.9.3
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH RT 4/5] kbuild: add -fno-PIE
2016-10-30 16:46 [PATCH RT 0/5] Linux 4.1.35-rt41-rc1 Steven Rostedt
` (2 preceding siblings ...)
2016-10-30 16:46 ` [PATCH RT 3/5] x86/apic: get rid of "warning: acpi_ioapic_lock defined but not used" Steven Rostedt
@ 2016-10-30 16:46 ` Steven Rostedt
2016-10-30 16:46 ` [PATCH RT 5/5] Linux 4.1.35-rt41-rc1 Steven Rostedt
4 siblings, 0 replies; 6+ messages in thread
From: Steven Rostedt @ 2016-10-30 16:46 UTC (permalink / raw)
To: linux-kernel, linux-rt-users
Cc: Thomas Gleixner, Carsten Emde, Sebastian Andrzej Siewior,
John Kacur, Paul Gortmaker
[-- Attachment #1: 0004-kbuild-add-fno-PIE.patch --]
[-- Type: text/plain, Size: 970 bytes --]
4.1.35-rt41-rc1 stable review patch.
If anyone has any objections, please let me know.
------------------
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Debian started to build the gcc with -fPIE by default so the kernel
build ends before it starts properly with:
|kernel/bounds.c:1:0: error: code model kernel does not support PIC mode
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/Makefile b/Makefile
index 21f657f2c4e6..384ef0e05826 100644
--- a/Makefile
+++ b/Makefile
@@ -400,7 +400,7 @@ KBUILD_CPPFLAGS := -D__KERNEL__
KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
-fno-strict-aliasing -fno-common \
-Werror-implicit-function-declaration \
- -Wno-format-security \
+ -Wno-format-security -fno-PIE \
-std=gnu89
KBUILD_AFLAGS_KERNEL :=
--
2.9.3
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH RT 5/5] Linux 4.1.35-rt41-rc1
2016-10-30 16:46 [PATCH RT 0/5] Linux 4.1.35-rt41-rc1 Steven Rostedt
` (3 preceding siblings ...)
2016-10-30 16:46 ` [PATCH RT 4/5] kbuild: add -fno-PIE Steven Rostedt
@ 2016-10-30 16:46 ` Steven Rostedt
4 siblings, 0 replies; 6+ messages in thread
From: Steven Rostedt @ 2016-10-30 16:46 UTC (permalink / raw)
To: linux-kernel, linux-rt-users
Cc: Thomas Gleixner, Carsten Emde, Sebastian Andrzej Siewior,
John Kacur, Paul Gortmaker
[-- Attachment #1: 0005-Linux-4.1.35-rt41-rc1.patch --]
[-- Type: text/plain, Size: 411 bytes --]
4.1.35-rt41-rc1 stable review patch.
If anyone has any objections, please let me know.
------------------
From: "Steven Rostedt (Red Hat)" <rostedt@goodmis.org>
---
localversion-rt | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/localversion-rt b/localversion-rt
index 2af6c89aee6d..ad263cec032a 100644
--- a/localversion-rt
+++ b/localversion-rt
@@ -1 +1 @@
--rt40
+-rt41-rc1
--
2.9.3
^ permalink raw reply related [flat|nested] 6+ messages in thread
end of thread, other threads:[~2016-10-30 16:48 UTC | newest]
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2016-10-30 16:46 [PATCH RT 0/5] Linux 4.1.35-rt41-rc1 Steven Rostedt
2016-10-30 16:46 ` [PATCH RT 1/5] ftrace: Fix trace header alignment Steven Rostedt
2016-10-30 16:46 ` [PATCH RT 2/5] zsmalloc: turn that get_cpu_light() into a local_lock() Steven Rostedt
2016-10-30 16:46 ` [PATCH RT 3/5] x86/apic: get rid of "warning: acpi_ioapic_lock defined but not used" Steven Rostedt
2016-10-30 16:46 ` [PATCH RT 4/5] kbuild: add -fno-PIE Steven Rostedt
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