We don't need to adjust prio before new pi_waiter adding. The prio only need update after pi_waiter change or task normal_prio change.
Signed-off-by: Alex Shi alex.shi@linaro.org 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 e12dce4..55fc7fb 100644 --- a/kernel/locking/rtmutex.c +++ b/kernel/locking/rtmutex.c @@ -973,7 +973,6 @@ 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;