[PATCH] del_timer_sync(): add cpu_relax()

Relax the CPU in the del_timer_sync() busywait loop.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/kernel/timer.c b/kernel/timer.c
index 2a87430a58d4..acfa557e685b 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -374,6 +374,7 @@ int del_timer_sync(struct timer_list *timer)
                 int ret = try_to_del_timer_sync(timer);
                 if (ret >= 0)
                         return ret;
+                cpu_relax();
         }
 }