X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=kernel%2Fsmp.c;h=300d29391e07416d73177c752ecca4afee21d3dd;hb=25528213fe9f75f4e286f08d35a73ca2bb634a50;hp=d903c02223afbaa2776b2610f00ae3def7de442e;hpb=3bea6a4c7895fc94965a219a8da9bcf753667901;p=deliverable%2Flinux.git

diff --git a/kernel/smp.c b/kernel/smp.c
index d903c02223af..300d29391e07 100644
--- a/kernel/smp.c
+++ b/kernel/smp.c
@@ -105,13 +105,12 @@ void __init call_function_init(void)
  * previous function call. For multi-cpu calls its even more interesting
  * as we'll have to ensure no other cpu is observing our csd.
  */
-static void csd_lock_wait(struct call_single_data *csd)
+static __always_inline void csd_lock_wait(struct call_single_data *csd)
 {
-	while (smp_load_acquire(&csd->flags) & CSD_FLAG_LOCK)
-		cpu_relax();
+	smp_cond_acquire(!(csd->flags & CSD_FLAG_LOCK));
 }
 
-static void csd_lock(struct call_single_data *csd)
+static __always_inline void csd_lock(struct call_single_data *csd)
 {
 	csd_lock_wait(csd);
 	csd->flags |= CSD_FLAG_LOCK;
@@ -124,7 +123,7 @@ static void csd_lock(struct call_single_data *csd)
 	smp_wmb();
 }
 
-static void csd_unlock(struct call_single_data *csd)
+static __always_inline void csd_unlock(struct call_single_data *csd)
 {
 	WARN_ON(!(csd->flags & CSD_FLAG_LOCK));