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rtmutex: Remove bogus hrtimer_active() check 

The check for hrtimer_active() after starting the timer is
pointless. If the timer is inactive it has expired already and
therefor the task pointer is already NULL.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Preeti U Murthy <preeti@linux.vnet.ibm.com>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Link: http://lkml.kernel.org/r/20150414203503.081830481@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner 2015-04-14 21:09:15 +00:00
parent 2e4b0d3fe8
commit ccdd92c17e
1 changed files with 1 additions and 4 deletions
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5
kernel/locking/rtmutex.c
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@ -1180,11 +1180,8 @@ rt_mutex_slowlock(struct rt_mutex *lock, int state,
set_current_state(state);
/* Setup the timer, when timeout != NULL */
if (unlikely(timeout)) {
if (unlikely(timeout))
hrtimer_start_expires(&timeout->timer, HRTIMER_MODE_ABS);
if (!hrtimer_active(&timeout->timer))
timeout->task = NULL;
}
ret = task_blocks_on_rt_mutex(lock, &waiter, current, chwalk);