* [ANNOUNCE] 3.4-rc2-rt1
@ 2012-04-10 14:46 Thomas Gleixner
2012-04-10 14:58 ` Arnd Bergmann
` (2 more replies)
0 siblings, 3 replies; 7+ messages in thread
From: Thomas Gleixner @ 2012-04-10 14:46 UTC (permalink / raw)
To: LKML; +Cc: linux-rt-users
Dear RT Folks,
I'm pleased to announce the 3.4-rc2-rt1 release.
This is a straight forward update of the 3.2 series to 3.4-rc2. It's
slightly smaller than the 3.2 series. I hope to stabilize it fast so I
can concentrate on shuffling more parts of RT into 3.5.
The RT patch against 3.4-rc2-rt1 can be found here:
http://www.kernel.org/pub/linux/kernel/projects/rt/3.4/patch-3.4-rc2-rt1.patch.xz
The split quilt queue is available at:
http://www.kernel.org/pub/linux/kernel/projects/rt/3.4/patches-3.4-rc2-rt1.tar.xz
Enjoy,
tglx
---
Index: linux-3.2/fs/autofs4/autofs_i.h
===================================================================
--- linux-3.2.orig/fs/autofs4/autofs_i.h
+++ linux-3.2/fs/autofs4/autofs_i.h
@@ -34,6 +34,7 @@
#include <linux/sched.h>
#include <linux/mount.h>
#include <linux/namei.h>
+#include <linux/delay.h>
#include <asm/current.h>
#include <asm/uaccess.h>
Index: linux-3.2/fs/autofs4/expire.c
===================================================================
--- linux-3.2.orig/fs/autofs4/expire.c
+++ linux-3.2/fs/autofs4/expire.c
@@ -170,7 +170,7 @@ again:
parent = p->d_parent;
if (!seq_spin_trylock(&parent->d_lock)) {
seq_spin_unlock(&p->d_lock);
- cpu_relax();
+ cpu_chill();
goto relock;
}
seq_spin_unlock(&p->d_lock);
Index: linux-3.2/fs/dcache.c
===================================================================
--- linux-3.2.orig/fs/dcache.c
+++ linux-3.2/fs/dcache.c
@@ -37,6 +37,7 @@
#include <linux/rculist_bl.h>
#include <linux/prefetch.h>
#include <linux/ratelimit.h>
+#include <linux/delay.h>
#include "internal.h"
/*
@@ -410,7 +411,7 @@ static inline struct dentry *dentry_kill
if (inode && !spin_trylock(&inode->i_lock)) {
relock:
seq_spin_unlock(&dentry->d_lock);
- cpu_relax();
+ cpu_chill();
return dentry; /* try again with same dentry */
}
if (IS_ROOT(dentry))
@@ -796,7 +797,7 @@ relock:
if (!seq_spin_trylock(&dentry->d_lock)) {
spin_unlock(&dcache_lru_lock);
- cpu_relax();
+ cpu_chill();
goto relock;
}
@@ -1974,7 +1975,7 @@ again:
if (dentry->d_count == 1) {
if (inode && !spin_trylock(&inode->i_lock)) {
seq_spin_unlock(&dentry->d_lock);
- cpu_relax();
+ cpu_chill();
goto again;
}
dentry->d_flags &= ~DCACHE_CANT_MOUNT;
Index: linux-3.2/fs/namespace.c
===================================================================
--- linux-3.2.orig/fs/namespace.c
+++ linux-3.2/fs/namespace.c
@@ -31,6 +31,7 @@
#include <linux/idr.h>
#include <linux/fs_struct.h>
#include <linux/fsnotify.h>
+#include <linux/delay.h>
#include <asm/uaccess.h>
#include <asm/unistd.h>
#include "pnode.h"
@@ -346,7 +347,7 @@ int mnt_want_write(struct vfsmount *mnt)
*/
while (mnt->mnt_flags & MNT_WRITE_HOLD) {
preempt_enable();
- cpu_relax();
+ cpu_chill();
preempt_disable();
}
/*
Index: linux-3.2/include/linux/preempt.h
===================================================================
--- linux-3.2.orig/include/linux/preempt.h
+++ linux-3.2/include/linux/preempt.h
@@ -56,8 +56,10 @@ do { \
#ifndef CONFIG_PREEMPT_RT_BASE
# define preempt_enable_no_resched() __preempt_enable_no_resched()
+# define preempt_check_resched_rt() do { } while (0)
#else
# define preempt_enable_no_resched() preempt_enable()
+# define preempt_check_resched_rt() preempt_check_resched()
#endif
#define preempt_enable() \
Index: linux-3.2/kernel/irq/manage.c
===================================================================
--- linux-3.2.orig/kernel/irq/manage.c
+++ linux-3.2/kernel/irq/manage.c
@@ -995,6 +995,11 @@ __setup_irq(unsigned int irq, struct irq
/* add new interrupt at end of irq queue */
do {
+ /*
+ * Or all existing action->thread_mask bits,
+ * so we can find the next zero bit for this
+ * new action.
+ */
thread_mask |= old->thread_mask;
old_ptr = &old->next;
old = *old_ptr;
@@ -1003,14 +1008,41 @@ __setup_irq(unsigned int irq, struct irq
}
/*
- * Setup the thread mask for this irqaction. Unlikely to have
- * 32 resp 64 irqs sharing one line, but who knows.
+ * Setup the thread mask for this irqaction for ONESHOT. For
+ * !ONESHOT irqs the thread mask is 0 so we can avoid a
+ * conditional in irq_wake_thread().
*/
- if (new->flags & IRQF_ONESHOT && thread_mask == ~0UL) {
- ret = -EBUSY;
- goto out_mask;
+ if (new->flags & IRQF_ONESHOT) {
+ /*
+ * Unlikely to have 32 resp 64 irqs sharing one line,
+ * but who knows.
+ */
+ if (thread_mask == ~0UL) {
+ ret = -EBUSY;
+ goto out_mask;
+ }
+ /*
+ * The thread_mask for the action is or'ed to
+ * desc->thread_active to indicate that the
+ * IRQF_ONESHOT thread handler has been woken, but not
+ * yet finished. The bit is cleared when a thread
+ * completes. When all threads of a shared interrupt
+ * line have completed desc->threads_active becomes
+ * zero and the interrupt line is unmasked. See
+ * handle.c:irq_wake_thread() for further information.
+ *
+ * If no thread is woken by primary (hard irq context)
+ * interrupt handlers, then desc->threads_active is
+ * also checked for zero to unmask the irq line in the
+ * affected hard irq flow handlers
+ * (handle_[fasteoi|level]_irq).
+ *
+ * The new action gets the first zero bit of
+ * thread_mask assigned. See the loop above which or's
+ * all existing action->thread_mask bits.
+ */
+ new->thread_mask = 1 << ffz(thread_mask);
}
- new->thread_mask = 1 << ffz(thread_mask);
if (!shared) {
init_waitqueue_head(&desc->wait_for_threads);
Index: linux-3.2/localversion-rt
===================================================================
--- linux-3.2.orig/localversion-rt
+++ linux-3.2/localversion-rt
@@ -1 +1 @@
--rt16
+-rt17
Index: linux-3.2/net/core/dev.c
===================================================================
--- linux-3.2.orig/net/core/dev.c
+++ linux-3.2/net/core/dev.c
@@ -1779,6 +1779,7 @@ static inline void __netif_reschedule(st
sd->output_queue_tailp = &q->next_sched;
raise_softirq_irqoff(NET_TX_SOFTIRQ);
local_irq_restore(flags);
+ preempt_check_resched_rt();
}
void __netif_schedule(struct Qdisc *q)
@@ -1800,6 +1801,7 @@ void dev_kfree_skb_irq(struct sk_buff *s
sd->completion_queue = skb;
raise_softirq_irqoff(NET_TX_SOFTIRQ);
local_irq_restore(flags);
+ preempt_check_resched_rt();
}
}
EXPORT_SYMBOL(dev_kfree_skb_irq);
@@ -2969,6 +2971,7 @@ enqueue:
rps_unlock(sd);
local_irq_restore(flags);
+ preempt_check_resched_rt();
atomic_long_inc(&skb->dev->rx_dropped);
kfree_skb(skb);
@@ -3789,6 +3792,7 @@ static void net_rps_action_and_irq_enabl
} else
#endif
local_irq_enable();
+ preempt_check_resched_rt();
}
static int process_backlog(struct napi_struct *napi, int quota)
@@ -3861,6 +3865,7 @@ void __napi_schedule(struct napi_struct
local_irq_save(flags);
____napi_schedule(&__get_cpu_var(softnet_data), n);
local_irq_restore(flags);
+ preempt_check_resched_rt();
}
EXPORT_SYMBOL(__napi_schedule);
@@ -6401,6 +6406,7 @@ static int dev_cpu_callback(struct notif
raise_softirq_irqoff(NET_TX_SOFTIRQ);
local_irq_enable();
+ preempt_check_resched_rt();
/* Process offline CPU's input_pkt_queue */
while ((skb = __skb_dequeue(&oldsd->process_queue))) {
Index: linux-3.2/block/blk-iopoll.c
===================================================================
--- linux-3.2.orig/block/blk-iopoll.c
+++ linux-3.2/block/blk-iopoll.c
@@ -38,6 +38,7 @@ void blk_iopoll_sched(struct blk_iopoll
list_add_tail(&iop->list, &__get_cpu_var(blk_cpu_iopoll));
__raise_softirq_irqoff(BLOCK_IOPOLL_SOFTIRQ);
local_irq_restore(flags);
+ preempt_check_resched_rt();
}
EXPORT_SYMBOL(blk_iopoll_sched);
@@ -135,6 +136,7 @@ static void blk_iopoll_softirq(struct so
__raise_softirq_irqoff(BLOCK_IOPOLL_SOFTIRQ);
local_irq_enable();
+ preempt_check_resched_rt();
}
/**
@@ -204,6 +206,7 @@ static int __cpuinit blk_iopoll_cpu_noti
&__get_cpu_var(blk_cpu_iopoll));
__raise_softirq_irqoff(BLOCK_IOPOLL_SOFTIRQ);
local_irq_enable();
+ preempt_check_resched_rt();
}
return NOTIFY_OK;
Index: linux-3.2/block/blk-softirq.c
===================================================================
--- linux-3.2.orig/block/blk-softirq.c
+++ linux-3.2/block/blk-softirq.c
@@ -50,6 +50,7 @@ static void trigger_softirq(void *data)
raise_softirq_irqoff(BLOCK_SOFTIRQ);
local_irq_restore(flags);
+ preempt_check_resched_rt();
}
/*
@@ -92,6 +93,7 @@ static int __cpuinit blk_cpu_notify(stru
&__get_cpu_var(blk_cpu_done));
raise_softirq_irqoff(BLOCK_SOFTIRQ);
local_irq_enable();
+ preempt_check_resched_rt();
}
return NOTIFY_OK;
@@ -150,6 +152,7 @@ do_local:
goto do_local;
local_irq_restore(flags);
+ preempt_check_resched_rt();
}
/**
Index: linux-3.2/include/linux/delay.h
===================================================================
--- linux-3.2.orig/include/linux/delay.h
+++ linux-3.2/include/linux/delay.h
@@ -52,4 +52,10 @@ static inline void ssleep(unsigned int s
msleep(seconds * 1000);
}
+#ifdef CONFIG_PREEMPT_RT_FULL
+# define cpu_chill() msleep(1)
+#else
+# define cpu_chill() cpu_relax()
+#endif
+
#endif /* defined(_LINUX_DELAY_H) */
Index: linux-3.2/net/packet/af_packet.c
===================================================================
--- linux-3.2.orig/net/packet/af_packet.c
+++ linux-3.2/net/packet/af_packet.c
@@ -89,6 +89,7 @@
#include <linux/virtio_net.h>
#include <linux/errqueue.h>
#include <linux/net_tstamp.h>
+#include <linux/delay.h>
#ifdef CONFIG_INET
#include <net/inet_common.h>
@@ -673,7 +674,7 @@ static void prb_retire_rx_blk_timer_expi
if (BLOCK_NUM_PKTS(pbd)) {
while (atomic_read(&pkc->blk_fill_in_prog)) {
/* Waiting for skb_copy_bits to finish... */
- cpu_relax();
+ cpu_chill();
}
}
@@ -928,7 +929,7 @@ static void prb_retire_current_block(str
if (!(status & TP_STATUS_BLK_TMO)) {
while (atomic_read(&pkc->blk_fill_in_prog)) {
/* Waiting for skb_copy_bits to finish... */
- cpu_relax();
+ cpu_chill();
}
}
prb_close_block(pkc, pbd, po, status);
Index: linux-3.2/net/rds/ib_rdma.c
===================================================================
--- linux-3.2.orig/net/rds/ib_rdma.c
+++ linux-3.2/net/rds/ib_rdma.c
@@ -34,6 +34,7 @@
#include <linux/slab.h>
#include <linux/rculist.h>
#include <linux/llist.h>
+#include <linux/delay.h>
#include "rds.h"
#include "ib.h"
@@ -286,7 +287,7 @@ static inline void wait_clean_list_grace
for_each_online_cpu(cpu) {
flag = &per_cpu(clean_list_grace, cpu);
while (test_bit(CLEAN_LIST_BUSY_BIT, flag))
- cpu_relax();
+ cpu_chill();
}
}
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [ANNOUNCE] 3.4-rc2-rt1
2012-04-10 14:46 [ANNOUNCE] 3.4-rc2-rt1 Thomas Gleixner
@ 2012-04-10 14:58 ` Arnd Bergmann
2012-04-10 15:02 ` Thomas Gleixner
2012-04-10 23:47 ` Frank Rowand
2012-04-11 2:23 ` Frank Rowand
2 siblings, 1 reply; 7+ messages in thread
From: Arnd Bergmann @ 2012-04-10 14:58 UTC (permalink / raw)
To: Thomas Gleixner; +Cc: LKML, linux-rt-users
On Tuesday 10 April 2012, Thomas Gleixner wrote:
> Dear RT Folks,
>
> I'm pleased to announce the 3.4-rc2-rt1 release.
>
> This is a straight forward update of the 3.2 series to 3.4-rc2. It's
> slightly smaller than the 3.2 series. I hope to stabilize it fast so I
> can concentrate on shuffling more parts of RT into 3.5.
>
> The RT patch against 3.4-rc2-rt1 can be found here:
>
> http://www.kernel.org/pub/linux/kernel/projects/rt/3.4/patch-3.4-rc2-rt1.patch.xz
>
>
> The split quilt queue is available at:
>
> http://www.kernel.org/pub/linux/kernel/projects/rt/3.4/patches-3.4-rc2-rt1.tar.xz
>
> Enjoy,
>
> tglx
> ---
> Index: linux-3.2/fs/autofs4/autofs_i.h
> ===================================================================
> --- linux-3.2.orig/fs/autofs4/autofs_i.h
> +++ linux-3.2/fs/autofs4/autofs_i.h
I guess the patch you attached here with this diffstat
block/blk-iopoll.c | 3 +++
block/blk-softirq.c | 3 +++
fs/autofs4/autofs_i.h | 1 +
fs/autofs4/expire.c | 2 +-
fs/dcache.c | 7 ++++---
fs/namespace.c | 3 ++-
include/linux/delay.h | 6 ++++++
include/linux/preempt.h | 2 ++
kernel/irq/manage.c | 44 ++++++++++++++++++++++++++++++++++++++------
localversion-rt | 2 +-
net/core/dev.c | 6 ++++++
net/packet/af_packet.c | 5 +++--
net/rds/ib_rdma.c | 3 ++-
13 files changed, 72 insertions(+), 15 deletions(-)
is not the one you describe above but the one for the 3.2.14-rt24 release,
right? Otherwise it would be considerably smaller compared to 3.2-rt, not
just a bit ;-)
Arnd
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [ANNOUNCE] 3.4-rc2-rt1
2012-04-10 14:58 ` Arnd Bergmann
@ 2012-04-10 15:02 ` Thomas Gleixner
0 siblings, 0 replies; 7+ messages in thread
From: Thomas Gleixner @ 2012-04-10 15:02 UTC (permalink / raw)
To: Arnd Bergmann; +Cc: LKML, linux-rt-users
On Tue, 10 Apr 2012, Arnd Bergmann wrote:
> On Tuesday 10 April 2012, Thomas Gleixner wrote:
> net/rds/ib_rdma.c | 3 ++-
> 13 files changed, 72 insertions(+), 15 deletions(-)
>
> is not the one you describe above but the one for the 3.2.14-rt24 release,
> right? Otherwise it would be considerably smaller compared to 3.2-rt, not
> just a bit ;-)
Someone should forbit copy and paste, really. :)
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [ANNOUNCE] 3.4-rc2-rt1
2012-04-10 14:46 [ANNOUNCE] 3.4-rc2-rt1 Thomas Gleixner
2012-04-10 14:58 ` Arnd Bergmann
@ 2012-04-10 23:47 ` Frank Rowand
2012-04-10 23:51 ` Frank Rowand
2012-04-11 2:23 ` Frank Rowand
2 siblings, 1 reply; 7+ messages in thread
From: Frank Rowand @ 2012-04-10 23:47 UTC (permalink / raw)
To: Thomas Gleixner; +Cc: LKML, linux-rt-users
On 04/10/12 07:46, Thomas Gleixner wrote:
> Dear RT Folks,
>
> I'm pleased to announce the 3.4-rc2-rt1 release.
>
> This is a straight forward update of the 3.2 series to 3.4-rc2. It's
> slightly smaller than the 3.2 series. I hope to stabilize it fast so I
> can concentrate on shuffling more parts of RT into 3.5.
Compile on the ARM panda fails because commit 615399c8 removed the defines of:
cpu_online_map
cpu_possible_map
These defines are used by posix-timers-thread-posix-cpu-timers-on-rt.patch
kernel/posix-cpu-timers.c: In function 'posix_cpu_thread_call':
kernel/posix-cpu-timers.c:1487: error: 'cpu_online_map' undeclared (first use in this function)
kernel/posix-cpu-timers.c:1487: error: (Each undeclared identifier is reported only once
kernel/posix-cpu-timers.c:1487: error: for each function it appears in.)
kernel/posix-cpu-timers.c: In function 'posix_cpu_thread_init':
kernel/posix-cpu-timers.c:1515: error: 'cpu_possible_map' undeclared (first use in this function)
This patch is a temporary workaround, putting back two of the defines removed
by commit 615399c8.
Signed-off-by: Frank Rowand <frank.rowand@am.sony.com>
---
include/linux/cpumask.h | 4 4 + 0 - 0 !
1 file changed, 4 insertions(+)
Index: b/include/linux/cpumask.h
===================================================================
--- a/include/linux/cpumask.h
+++ b/include/linux/cpumask.h
@@ -764,6 +764,10 @@ static inline const struct cpumask *get_
*
*/
#ifndef CONFIG_DISABLE_OBSOLETE_CPUMASK_FUNCTIONS
+/* These strip const, as traditionally they weren't const. */
+#define cpu_possible_map (*(cpumask_t *)cpu_possible_mask)
+#define cpu_online_map (*(cpumask_t *)cpu_online_mask)
+
#define cpumask_of_cpu(cpu) (*get_cpu_mask(cpu))
#define CPU_MASK_LAST_WORD BITMAP_LAST_WORD_MASK(NR_CPUS)
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [ANNOUNCE] 3.4-rc2-rt1
2012-04-10 23:47 ` Frank Rowand
@ 2012-04-10 23:51 ` Frank Rowand
2012-04-11 9:25 ` Thomas Gleixner
0 siblings, 1 reply; 7+ messages in thread
From: Frank Rowand @ 2012-04-10 23:51 UTC (permalink / raw)
To: Thomas Gleixner; +Cc: LKML, linux-rt-users
On 04/10/12 16:47, Frank Rowand wrote:
> On 04/10/12 07:46, Thomas Gleixner wrote:
>> Dear RT Folks,
>>
>> I'm pleased to announce the 3.4-rc2-rt1 release.
>>
>> This is a straight forward update of the 3.2 series to 3.4-rc2. It's
>> slightly smaller than the 3.2 series. I hope to stabilize it fast so I
>> can concentrate on shuffling more parts of RT into 3.5.
>
>
> Compile on the ARM panda fails because commit 615399c8 removed the defines of:
>
> cpu_online_map
> cpu_possible_map
>
> These defines are used by posix-timers-thread-posix-cpu-timers-on-rt.patch
>
>
> kernel/posix-cpu-timers.c: In function 'posix_cpu_thread_call':
> kernel/posix-cpu-timers.c:1487: error: 'cpu_online_map' undeclared (first use in this function)
> kernel/posix-cpu-timers.c:1487: error: (Each undeclared identifier is reported only once
> kernel/posix-cpu-timers.c:1487: error: for each function it appears in.)
> kernel/posix-cpu-timers.c: In function 'posix_cpu_thread_init':
> kernel/posix-cpu-timers.c:1515: error: 'cpu_possible_map' undeclared (first use in this function)
>
>
> This patch is a temporary workaround, putting back two of the defines removed
> by commit 615399c8.
< snip >
After applying this patch, the ARM panda boots, but with a lock warning.
This is for SMP, CONFIG_PREEMPT_RT_FULL.
I have not even read through the warning message yet, but am sharing it
here:
[ 0.183959] CPU1: Booted secondary processor
[ 0.253540] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
[ 0.253601] CPU1: Unknown IPI message 0x1
[ 0.253723]
[ 0.253723] =========================================================
[ 0.253723] [ INFO: possible irq lock inversion dependency detected ]
[ 0.253753] 3.4.0-rc2-rt1 #2 Not tainted
[ 0.253753] ---------------------------------------------------------
[ 0.253753] swapper/0/1 just changed the state of lock:
[ 0.253753] (wakeupgen_lock.lock.wait_lock){+.....}, at: [<c0460670>] rt_spin_lock_slowlock+0x2c/0x284
[ 0.253784] but this lock was taken by another, HARDIRQ-safe lock in the past:
[ 0.253814] (&irq_desc_lock_class){-.....}
[ 0.253814]
[ 0.253814] and interrupts could create inverse lock ordering between them.
[ 0.253814]
[ 0.253814]
[ 0.253814] other info that might help us debug this:
[ 0.253814] Chain exists of:
[ 0.253845] &irq_desc_lock_class --> irq_controller_lock --> wakeupgen_lock.lock.wait_lock
[ 0.253845]
[ 0.253845] Possible interrupt unsafe locking scenario:
[ 0.253845]
[ 0.253845] CPU0 CPU1
[ 0.253845] ---- ----
[ 0.253845] lock(wakeupgen_lock.lock.wait_lock);
[ 0.253875] local_irq_disable();
[ 0.253875] lock(&irq_desc_lock_class);
[ 0.253875] lock(irq_controller_lock);
[ 0.253875] <Interrupt>
[ 0.253875] lock(&irq_desc_lock_class);
[ 0.253906]
[ 0.253906] *** DEADLOCK ***
[ 0.253906]
[ 0.253906] 2 locks held by swapper/0/1:
[ 0.253906] #0: (cpu_add_remove_lock){+.+.+.}, at: [<c045be90>] cpu_up+0x3c/0x94
[ 0.253936] #1: (cpu_hotplug.lock){+.+.+.}, at: [<c0041314>] cpu_hotplug_begin+0x24/0x50
[ 0.253936]
[ 0.253967] the shortest dependencies between 2nd lock and 1st lock:
[ 0.253967] -> (&irq_desc_lock_class){-.....} ops: 758 {
[ 0.253967] IN-HARDIRQ-W at:
[ 0.253997] [<c008e390>] __lock_acquire+0x8a4/0x1cf0
[ 0.254028] [<c008f8dc>] lock_acquire+0x100/0x120
[ 0.254028] [<c0461280>] _raw_spin_lock+0x3c/0x4c
[ 0.254028] [<c00a2414>] handle_fasteoi_irq+0x14/0x144
[ 0.254058] [<c009ef88>] generic_handle_irq+0x30/0x4c
[ 0.254089] [<c0015080>] handle_IRQ+0x48/0xa8
[ 0.254119] [<c0008494>] gic_handle_irq+0x30/0x70
[ 0.254119] [<c04617a4>] __irq_svc+0x44/0x7c
[ 0.254119] [<c045b070>] calibrate_delay+0x168/0x290
[ 0.254150] [<c06198d4>] start_kernel+0x258/0x340
[ 0.254180] [<80008044>] 0x80008044
[ 0.254180] INITIAL USE at:
[ 0.254180] [<c008df28>] __lock_acquire+0x43c/0x1cf0
[ 0.254211] [<c008f8dc>] lock_acquire+0x100/0x120
[ 0.254211] [<c046138c>] _raw_spin_lock_irqsave+0x48/0x5c
[ 0.254211] [<c009f200>] __irq_get_desc_lock+0x78/0xa4
[ 0.254241] [<c00a1f0c>] irq_modify_status+0x20/0xb4
[ 0.254241] [<c009f33c>] irq_set_percpu_devid+0x6c/0x88
[ 0.254241] [<c0022578>] gic_irq_domain_map+0x58/0x88
[ 0.254272] [<c00a455c>] irq_domain_add_legacy+0x104/0x144
[ 0.254302] [<c0620f2c>] gic_init_bases+0xb8/0x2bc
[ 0.254302] [<c0625c3c>] gic_init_irq+0x5c/0x7c
[ 0.254333] [<c061c8b8>] init_IRQ+0x18/0x24
[ 0.254333] [<c0619804>] start_kernel+0x188/0x340
[ 0.254333] [<80008044>] 0x80008044
[ 0.254364] }
[ 0.254364] ... key at: [<c0c2bb88>] irq_desc_lock_class+0x0/0x8
[ 0.254364] ... acquired at:
[ 0.254364] [<c008f8dc>] lock_acquire+0x100/0x120
[ 0.254394] [<c0461280>] _raw_spin_lock+0x3c/0x4c
[ 0.254394] [<c00223ac>] gic_unmask_irq+0x18/0x6c
[ 0.254394] [<c00a1ce8>] irq_enable+0x40/0x50
[ 0.254425] [<c00a2908>] irq_startup+0x64/0x68
[ 0.254425] [<c00a0a98>] __setup_irq+0x3e0/0x434
[ 0.254425] [<c00a0e24>] setup_irq+0x44/0x84
[ 0.254425] [<c0623cbc>] omap2_gp_clockevent_init+0x1d0/0x360
[ 0.254455] [<c0623e60>] omap4_timer_init+0x14/0x64
[ 0.254455] [<c061db5c>] time_init+0x24/0x38
[ 0.254455] [<c061981c>] start_kernel+0x1a0/0x340
[ 0.254486] [<80008044>] 0x80008044
[ 0.254486]
[ 0.254486] -> (irq_controller_lock){......} ops: 4 {
[ 0.254486] INITIAL USE at:
[ 0.254486] [<c008df28>] __lock_acquire+0x43c/0x1cf0
[ 0.254516] [<c008f8dc>] lock_acquire+0x100/0x120
[ 0.254516] [<c0461280>] _raw_spin_lock+0x3c/0x4c
[ 0.254516] [<c00223ac>] gic_unmask_irq+0x18/0x6c
[ 0.254547] [<c00a1ce8>] irq_enable+0x40/0x50
[ 0.254547] [<c00a2908>] irq_startup+0x64/0x68
[ 0.254547] [<c00a0a98>] __setup_irq+0x3e0/0x434
[ 0.254577] [<c00a0e24>] setup_irq+0x44/0x84
[ 0.254577] [<c0623cbc>] omap2_gp_clockevent_init+0x1d0/0x360
[ 0.254577] [<c0623e60>] omap4_timer_init+0x14/0x64
[ 0.254608] [<c061db5c>] time_init+0x24/0x38
[ 0.254608] [<c061981c>] start_kernel+0x1a0/0x340
[ 0.254608] [<80008044>] 0x80008044
[ 0.254638] }
[ 0.254638] ... key at: [<c069ed64>] irq_controller_lock+0x14/0x24
[ 0.254669] ... acquired at:
[ 0.254669] [<c008f8dc>] lock_acquire+0x100/0x120
[ 0.254669] [<c0461280>] _raw_spin_lock+0x3c/0x4c
[ 0.254669] [<c0460670>] rt_spin_lock_slowlock+0x2c/0x284
[ 0.254699] [<c04609d8>] rt_spin_lock+0x18/0x40
[ 0.254699] [<c0028948>] wakeupgen_unmask+0x14/0x8c
[ 0.254699] [<c00223c4>] gic_unmask_irq+0x30/0x6c
[ 0.254730] [<c00a1ce8>] irq_enable+0x40/0x50
[ 0.254730] [<c00a2908>] irq_startup+0x64/0x68
[ 0.254730] [<c00a0a98>] __setup_irq+0x3e0/0x434
[ 0.254730] [<c00a0e24>] setup_irq+0x44/0x84
[ 0.254760] [<c0623cbc>] omap2_gp_clockevent_init+0x1d0/0x360
[ 0.254760] [<c0623e60>] omap4_timer_init+0x14/0x64
[ 0.254760] [<c061db5c>] time_init+0x24/0x38
[ 0.254791] [<c061981c>] start_kernel+0x1a0/0x340
[ 0.254791] [<80008044>] 0x80008044
[ 0.254791]
[ 0.254791] -> (wakeupgen_lock.lock.wait_lock){+.....} ops: 7 {
[ 0.254821] HARDIRQ-ON-W at:
[ 0.254821] [<c008e1fc>] __lock_acquire+0x710/0x1cf0
[ 0.254821] [<c008f8dc>] lock_acquire+0x100/0x120
[ 0.254821] [<c0461280>] _raw_spin_lock+0x3c/0x4c
[ 0.254852] [<c0460670>] rt_spin_lock_slowlock+0x2c/0x284
[ 0.254852] [<c04609d8>] rt_spin_lock+0x18/0x40
[ 0.254852] [<c00286c4>] wakeupgen_irqmask_all+0x18/0x10c
[ 0.254882] [<c045bb20>] irq_cpu_hotplug_notify+0x38/0x3c
[ 0.254882] [<c04634a4>] notifier_call_chain+0x4c/0x8c
[ 0.254913] [<c045be30>] _cpu_up+0x128/0x14c
[ 0.254913] [<c045bed0>] cpu_up+0x7c/0x94
[ 0.254913] [<c0632eec>] smp_init+0x88/0xc4
[ 0.254943] [<c061927c>] kernel_init+0x68/0x1d0
[ 0.254943] [<c0015170>] kernel_thread_exit+0x0/0x8
[ 0.254974] INITIAL USE at:
[ 0.254974] [<c008df28>] __lock_acquire+0x43c/0x1cf0
[ 0.254974] [<c008f8dc>] lock_acquire+0x100/0x120
[ 0.255004] [<c0461280>] _raw_spin_lock+0x3c/0x4c
[ 0.255004] [<c0460670>] rt_spin_lock_slowlock+0x2c/0x284
[ 0.255004] [<c04609d8>] rt_spin_lock+0x18/0x40
[ 0.255035] [<c0028948>] wakeupgen_unmask+0x14/0x8c
[ 0.255035] [<c00223c4>] gic_unmask_irq+0x30/0x6c
[ 0.255065] [<c00a1ce8>] irq_enable+0x40/0x50
[ 0.255065] [<c00a2908>] irq_startup+0x64/0x68
[ 0.255065] [<c00a0a98>] __setup_irq+0x3e0/0x434
[ 0.255065] [<c00a0e24>] setup_irq+0x44/0x84
[ 0.255096] [<c0623cbc>] omap2_gp_clockevent_init+0x1d0/0x360
[ 0.255096] [<c0623e60>] omap4_timer_init+0x14/0x64
[ 0.255126] [<c061db5c>] time_init+0x24/0x38
[ 0.255126] [<c061981c>] start_kernel+0x1a0/0x340
[ 0.255126] [<80008044>] 0x80008044
[ 0.255126] }
[ 0.255157] ... key at: [<c0670114>] wakeupgen_lock+0x14/0x80
[ 0.255157] ... acquired at:
[ 0.255187] [<c008d174>] check_usage_backwards+0xa4/0x104
[ 0.255187] [<c008c144>] mark_lock+0x26c/0x680
[ 0.255187] [<c008e1fc>] __lock_acquire+0x710/0x1cf0
[ 0.255187] [<c008f8dc>] lock_acquire+0x100/0x120
[ 0.255218] [<c0461280>] _raw_spin_lock+0x3c/0x4c
[ 0.255218] [<c0460670>] rt_spin_lock_slowlock+0x2c/0x284
[ 0.255218] [<c04609d8>] rt_spin_lock+0x18/0x40
[ 0.255249] [<c00286c4>] wakeupgen_irqmask_all+0x18/0x10c
[ 0.255249] [<c045bb20>] irq_cpu_hotplug_notify+0x38/0x3c
[ 0.255249] [<c04634a4>] notifier_call_chain+0x4c/0x8c
[ 0.255249] [<c045be30>] _cpu_up+0x128/0x14c
[ 0.255279] [<c045bed0>] cpu_up+0x7c/0x94
[ 0.255279] [<c0632eec>] smp_init+0x88/0xc4
[ 0.255279] [<c061927c>] kernel_init+0x68/0x1d0
[ 0.255310] [<c0015170>] kernel_thread_exit+0x0/0x8
[ 0.255310]
[ 0.255310]
[ 0.255310] stack backtrace:
[ 0.255340] [<c001b674>] (unwind_backtrace+0x0/0xf0) from [<c008cf4c>] (print_irq_inversion_bug+0x190/0x210)
[ 0.255371] [<c008cf4c>] (print_irq_inversion_bug+0x190/0x210) from [<c008d174>] (check_usage_backwards+0xa4/
0x104)
[ 0.255371] [<c008d174>] (check_usage_backwards+0xa4/0x104) from [<c008c144>] (mark_lock+0x26c/0x680)
[ 0.255401] [<c008c144>] (mark_lock+0x26c/0x680) from [<c008e1fc>] (__lock_acquire+0x710/0x1cf0)
[ 0.255401] [<c008e1fc>] (__lock_acquire+0x710/0x1cf0) from [<c008f8dc>] (lock_acquire+0x100/0x120)
[ 0.255401] [<c008f8dc>] (lock_acquire+0x100/0x120) from [<c0461280>] (_raw_spin_lock+0x3c/0x4c)
[ 0.255432] [<c0461280>] (_raw_spin_lock+0x3c/0x4c) from [<c0460670>] (rt_spin_lock_slowlock+0x2c/0x284)
[ 0.255432] [<c0460670>] (rt_spin_lock_slowlock+0x2c/0x284) from [<c04609d8>] (rt_spin_lock+0x18/0x40)
[ 0.255462] [<c04609d8>] (rt_spin_lock+0x18/0x40) from [<c00286c4>] (wakeupgen_irqmask_all+0x18/0x10c)
[ 0.255462] [<c00286c4>] (wakeupgen_irqmask_all+0x18/0x10c) from [<c045bb20>] (irq_cpu_hotplug_notify+0x38/0x
3c)
[ 0.255493] [<c045bb20>] (irq_cpu_hotplug_notify+0x38/0x3c) from [<c04634a4>] (notifier_call_chain+0x4c/0x8c)
[ 0.255493] [<c04634a4>] (notifier_call_chain+0x4c/0x8c) from [<c045be30>] (_cpu_up+0x128/0x14c)
[ 0.255523] [<c045be30>] (_cpu_up+0x128/0x14c) from [<c045bed0>] (cpu_up+0x7c/0x94)
[ 0.255523] [<c045bed0>] (cpu_up+0x7c/0x94) from [<c0632eec>] (smp_init+0x88/0xc4)
[ 0.255554] [<c0632eec>] (smp_init+0x88/0xc4) from [<c061927c>] (kernel_init+0x68/0x1d0)
[ 0.255554] [<c061927c>] (kernel_init+0x68/0x1d0) from [<c0015170>] (kernel_thread_exit+0x0/0x8)
[ 0.255584] Brought up 2 CPUs
[ 0.255584] SMP: Total of 2 processors activated (4022.78 BogoMIPS).
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [ANNOUNCE] 3.4-rc2-rt1
2012-04-10 14:46 [ANNOUNCE] 3.4-rc2-rt1 Thomas Gleixner
2012-04-10 14:58 ` Arnd Bergmann
2012-04-10 23:47 ` Frank Rowand
@ 2012-04-11 2:23 ` Frank Rowand
2 siblings, 0 replies; 7+ messages in thread
From: Frank Rowand @ 2012-04-11 2:23 UTC (permalink / raw)
To: Thomas Gleixner; +Cc: LKML, linux-rt-users
On 04/10/12 07:46, Thomas Gleixner wrote:
> Dear RT Folks,
>
> I'm pleased to announce the 3.4-rc2-rt1 release.
>
> This is a straight forward update of the 3.2 series to 3.4-rc2. It's
> slightly smaller than the 3.2 series. I hope to stabilize it fast so I
> can concentrate on shuffling more parts of RT into 3.5.
3.4-rc2-rt1 builds and boots on some ARM boards (PandaBoard, Realview) for:
- SMP, PREEMPT_RT_FULL
- SMP, PREEMPT_NONE
- UP, PREEMPT_RT_FULL
- UP, PREEMPT_NONE
Patch was required to compile (see earlier in this email thread).
Second patch required to resolve NULL pointer dereference on boot
of Realview. Patch sent to lkml (https://lkml.org/lkml/2012/4/10/518).
PandaBoard SMP, PREEMPT_RT_FULL has a lock warning on boot (reported
earlier in this thread).
-Frank
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [ANNOUNCE] 3.4-rc2-rt1
2012-04-10 23:51 ` Frank Rowand
@ 2012-04-11 9:25 ` Thomas Gleixner
0 siblings, 0 replies; 7+ messages in thread
From: Thomas Gleixner @ 2012-04-11 9:25 UTC (permalink / raw)
To: Frank Rowand; +Cc: LKML, linux-rt-users
On Tue, 10 Apr 2012, Frank Rowand wrote:
> [ 0.253845] CPU0 CPU1
> [ 0.253845] ---- ----
> [ 0.253845] lock(wakeupgen_lock.lock.wait_lock);
wakeupgen_lock wants to be raw. I'll fix it for -rt2
Thanks,
tglx
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2012-04-11 9:25 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2012-04-10 14:46 [ANNOUNCE] 3.4-rc2-rt1 Thomas Gleixner
2012-04-10 14:58 ` Arnd Bergmann
2012-04-10 15:02 ` Thomas Gleixner
2012-04-10 23:47 ` Frank Rowand
2012-04-10 23:51 ` Frank Rowand
2012-04-11 9:25 ` Thomas Gleixner
2012-04-11 2:23 ` Frank Rowand
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