Commit 3bb5f4ac authored Jan 03, 2019 by Davidlohr Bueso Committed by Linus Torvalds Jan 04, 2019

kernel/locking/mutex.c: remove caller signal_pending branch predictions

This is already done for us internally by the signal machinery.

Link: http://lkml.kernel.org/r/20181116002713.8474-2-dave@stgolabs.net


Signed-off-by: Davidlohr Bueso <dave@stgolabs.net>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 9f132f7e

kernel/locking/mutex.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -987,7 +987,7 @@ __mutex_lock_common(struct mutex *lock, long state, unsigned int subclass,
		* wait_lock. This ensures the lock cancellation is ordered
		* against mutex_unlock() and wake-ups do not go missing.
		*/
		if (unlikely(signal_pending_state(state, current))) {
		if (signal_pending_state(state, current)) {
		ret = -EINTR;
		goto err;
		}

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