linux-kernel - [PATCH 4/5] ipc/sem: explicitly inline check

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Date:   Sun, 18 Sep 2016 12:11:35 -0700
From:   Davidlohr Bueso <dave@...olabs.net>
To:     akpm@...ux-foundation.org
Cc:     manfred@...orfullife.com, dave@...olabs.net,
        linux-kernel@...r.kernel.org, Davidlohr Bueso <dbueso@...e.de>
Subject: [PATCH 4/5] ipc/sem: explicitly inline check_restart

The compiler already does this, but make it explicit. This helper
is really small and also used in update_queue's main loop, which is
O(N^2) scanning. Inline and avoid the function overhead.

Signed-off-by: Davidlohr Bueso <dbueso@...e.de>
---
 ipc/sem.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ipc/sem.c b/ipc/sem.c
index e868b5933ff8..89adba51e85f 100644
--- a/ipc/sem.c
+++ b/ipc/sem.c
@@ -771,7 +771,7 @@ static void unlink_queue(struct sem_array *sma, struct sem_queue *q)
  * modified the array.
  * Note that wait-for-zero operations are handled without restart.
  */
-static int check_restart(struct sem_array *sma, struct sem_queue *q)
+static inline int check_restart(struct sem_array *sma, struct sem_queue *q)
 {
 	/* pending complex alter operations are too difficult to analyse */
 	if (!list_empty(&sma->pending_alter))
-- 
2.6.6