Messages in this thread Patch in this message | | | From | Alex Shi <> | Subject | [PATCH 3/3] rtmutex: remove unnecessary adjust prio | Date | Thu, 25 May 2017 13:26:34 +0800 |
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We don't need to adjust prio before new pi_waiter adding. The prio only need update after pi_waiter change or task priority change.
Signed-off-by: Alex Shi <alex.shi@linaro.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Sebastian Siewior <bigeasy@linutronix.de> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Juri Lelli <juri.lelli@arm.com> Cc: Thomas Gleixner <tglx@linutronix.de> To: linux-kernel@vger.kernel.org To: Ingo Molnar <mingo@redhat.com> To: Peter Zijlstra <peterz@infradead.org> --- kernel/locking/rtmutex.c | 1 - 1 file changed, 1 deletion(-)
diff --git a/kernel/locking/rtmutex.c b/kernel/locking/rtmutex.c index b955094..b659ba0 100644 --- a/kernel/locking/rtmutex.c +++ b/kernel/locking/rtmutex.c @@ -963,7 +963,6 @@ static int task_blocks_on_rt_mutex(struct rt_mutex *lock, return -EDEADLK; raw_spin_lock(&task->pi_lock); - rt_mutex_adjust_prio(task); waiter->task = task; waiter->lock = lock; waiter->prio = task->prio; -- 1.9.1
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