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Groups > linux.kernel > #1628321

[PATCH v2 3/3] rtmutex: remove unnecessary adjust prio

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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>
To: linux-kernel@vger.kernel.org
To: Ingo Molnar <mingo@redhat.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
---
 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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[PATCH v2 1/3] rtmutex: update rt-mutex-design Alex Shi <alex.shi@linaro.org> - 2017-04-21 16:20 +0200
  [PATCH v2 3/3] rtmutex: remove unnecessary adjust prio Alex Shi <alex.shi@linaro.org> - 2017-04-21 16:20 +0200
  Re: [PATCH v2 1/3] rtmutex: update rt-mutex-design Peter Zijlstra <peterz@infradead.org> - 2017-04-21 19:10 +0200
    Re: [PATCH v2 1/3] rtmutex: update rt-mutex-design Alex Shi <alex.shi@linaro.org> - 2017-04-24 15:50 +0200
  Re: [PATCH v2 1/3] rtmutex: update rt-mutex-design Mathieu Poirier <mathieu.poirier@linaro.org> - 2017-04-21 21:00 +0200
    Re: [PATCH v2 1/3] rtmutex: update rt-mutex-design Alex Shi <alex.shi@linaro.org> - 2017-04-24 15:50 +0200

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