On 08/04/2011 02:42 AM, Peter Zijlstra wrote:
On Wed, 2011-08-03 at 23:34 -0700, Fernando Lopez-Lezcano wrote:
[ 117.026009] [<ffffffff814ef322>] _raw_spin_lock+0x45/0x79
[ 117.026009] [<ffffffff8107b6f1>] ? __run_posix_cpu_timers+0x8f/0x353
[ 117.026009] [<ffffffff8107b6f1>] __run_posix_cpu_timers+0x8f/0x353
I think its this one, could you confirm?
If this was later part of rt8 then yes, Tracey was able to boot on
fc15/x86_64 with no further problems (3.0.1 + rt8). I was also able to
boot rt8 this morning in my fc15 test laptop with no bugs or oops so
far... still testing but looks promising.
Thanks again!
-- Fernando
---
Index: linux-2.6/kernel/posix-cpu-timers.c
===================================================================
--- linux-2.6.orig/kernel/posix-cpu-timers.c
+++ linux-2.6/kernel/posix-cpu-timers.c
@@ -1288,10 +1288,11 @@ static inline int fastpath_timer_check(s
sig = tsk->signal;
if (sig->cputimer.running) {
struct task_cputime group_sample;
+ unsigned long flags;
- raw_spin_lock(&sig->cputimer.lock);
+ raw_spin_lock_irqsave(&sig->cputimer.lock, flags);
group_sample = sig->cputimer.cputime;
- raw_spin_unlock(&sig->cputimer.lock);
+ raw_spin_unlock_irqrestore(&sig->cputimer.lock, flags);
if (task_cputime_expired(&group_sample,&sig->cputime_expires))
return 1;
--
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