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watchdog: Drop FIFO policy in exit path 

When the watchdog thread exits it runs through the exit path with FIFO
priority. There is no point in doing so. Switch back to SCHED_NORMAL
before exiting.

Cc: Don Zickus <dzickus@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/alpine.LFD.2.02.1109121337461.2723@ionos
Signed-off-by: Ingo Molnar <mingo@elte.hu>
hifive-unleashed-5.1
Thomas Gleixner 2011-09-12 13:40:05 +02:00 committed by Ingo Molnar
parent 51887c8230
commit cba9bd22a5
1 changed files with 3 additions and 2 deletions
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5
kernel/watchdog.c
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@ -321,7 +321,7 @@ static enum hrtimer_restart watchdog_timer_fn(struct hrtimer *hrtimer)
*/
static int watchdog(void *unused)
{
static struct sched_param param = { .sched_priority = MAX_RT_PRIO-1 };
struct sched_param param = { .sched_priority = MAX_RT_PRIO-1 };
struct hrtimer *hrtimer = &__raw_get_cpu_var(watchdog_hrtimer);
sched_setscheduler(current, SCHED_FIFO, &param);
@ -350,7 +350,8 @@ static int watchdog(void *unused)
set_current_state(TASK_INTERRUPTIBLE);
}
__set_current_state(TASK_RUNNING);
param.sched_priority = 0;
sched_setscheduler(current, SCHED_NORMAL, &param);
return 0;
}