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posix-timers: Convert abuses of BUG_ON to WARN_ON 

The posix cpu timers code makes a heavy use of BUG_ON()
but none of these concern fatal issues that require
to stop the machine. So let's just warn the user when
some internal state slips out of our hands.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Kosaki Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Frederic Weisbecker 2013-10-11 17:58:08 +02:00
parent e73d84e33f
commit 531f64fd6f
1 changed files with 5 additions and 5 deletions
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10
kernel/posix-cpu-timers.c
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@ -395,7 +395,7 @@ static int posix_cpu_timer_del(struct k_itimer *timer)
* We raced with the reaping of the task.
* The deletion should have cleared us off the list.
*/
BUG_ON(!list_empty(&timer->it.cpu.entry));
WARN_ON_ONCE(!list_empty(&timer->it.cpu.entry));
} else {
if (timer->it.cpu.firing)
ret = TIMER_RETRY;
@ -640,7 +640,7 @@ static int posix_cpu_timer_set(struct k_itimer *timer, int timer_flags,
/*
* Disarm any old timer after extracting its expiry time.
*/
BUG_ON(!irqs_disabled());
WARN_ON_ONCE(!irqs_disabled());
ret = 0;
old_incr = timer->it.cpu.incr;
@ -1061,7 +1061,7 @@ void posix_cpu_timer_schedule(struct k_itimer *timer)
/*
* Now re-arm for the new expiry time.
*/
BUG_ON(!irqs_disabled());
WARN_ON_ONCE(!irqs_disabled());
arm_timer(timer);
unlock_task_sighand(p, &flags);
@ -1150,7 +1150,7 @@ void run_posix_cpu_timers(struct task_struct *tsk)
struct k_itimer *timer, *next;
unsigned long flags;
BUG_ON(!irqs_disabled());
WARN_ON_ONCE(!irqs_disabled());
/*
* The fast path checks that there are no expired thread or thread
@ -1217,7 +1217,7 @@ void set_process_cpu_timer(struct task_struct *tsk, unsigned int clock_idx,
{
unsigned long long now;
BUG_ON(clock_idx == CPUCLOCK_SCHED);
WARN_ON_ONCE(clock_idx == CPUCLOCK_SCHED);
cpu_timer_sample_group(clock_idx, tsk, &now);
if (oldval) {