Re: [ANNOUNCE] 3.0-rt6

Fernando Lopez-Lezcano
2011-08-04T19:05:15Z

Was going to try this but it appears it is in rt7, trying to build rt7
fails with:

ERROR: "of_find_property" [drivers/tty/serial/of_serial.ko] undefined!
ERROR: "of_find_property" [drivers/hwmon/ltc4245.ko] undefined!

-- Fernando

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?
>
> ---
> 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;
>