linux-kernel - [PATCH 1/6] locking/mutex: Remove caller signal

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Message-Id: <20181116002713.8474-2-dave@stgolabs.net>
Date:   Thu, 15 Nov 2018 16:27:08 -0800
From:   Davidlohr Bueso <dave@...olabs.net>
To:     akpm@...ux-foundation.org
Cc:     dave@...olabs.net, linux-kernel@...r.kernel.org,
        peterz@...radead.org, mingo@...nel.org
Subject: [PATCH 1/6] locking/mutex: Remove caller signal_pending branch predictions

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

Cc: peterz@...radead.org
Cc: mingo@...nel.org
Signed-off-by: Davidlohr Bueso <dave@...olabs.net>
---
 kernel/locking/mutex.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/locking/mutex.c b/kernel/locking/mutex.c
index 3f8a35104285..db578783dd36 100644
--- a/kernel/locking/mutex.c
+++ b/kernel/locking/mutex.c
@@ -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;
 		}
-- 
2.16.4