The patch titled
Subject: ipc/sem: explicitly inline check_restart
has been added to the -mm tree. Its filename is
ipc-sem-explicitly-inline-check_restart.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/ipc-sem-explicitly-inline-check_restart.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/ipc-sem-explicitly-inline-check_restart.patch
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------------------------------------------------------
From: Davidlohr Bueso <dave@xxxxxxxxxxxx>
Subject: 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.
Link: http://lkml.kernel.org/r/1474225896-10066-5-git-send-email-dave@xxxxxxxxxxxx
Signed-off-by: Davidlohr Bueso <dbueso@xxxxxxx>
Cc: Manfred Spraul <manfred@xxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
ipc/sem.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN ipc/sem.c~ipc-sem-explicitly-inline-check_restart ipc/sem.c
--- a/ipc/sem.c~ipc-sem-explicitly-inline-check_restart
+++ a/ipc/sem.c
@@ -788,7 +788,7 @@ static void unlink_queue(struct sem_arra
* 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))
_
Patches currently in -mm which might be from dave@xxxxxxxxxxxx are
ipc-sem-do-not-call-wake_sem_queue_do-prematurely.patch
ipc-sem-rework-task-wakeups.patch
ipc-sem-optimize-perform_atomic_semop.patch
ipc-sem-explicitly-inline-check_restart.patch
ipc-sem-use-proper-list-api-for-pending_list-wakeups.patch
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