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authorakpm@osdl.org <akpm@osdl.org>2005-05-01 08:58:47 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-05-01 08:58:47 -0700
commitd59dd4620fb8d6422555a9e2b82a707718e68327 (patch)
tree78205657d24efcaa3f8314064951ac3814ed95a7 /kernel/kthread.c
parent0d8d4d42f2d00eb65262b49f4edd4cf7ef4eb6fc (diff)
downloadlwn-d59dd4620fb8d6422555a9e2b82a707718e68327.tar.gz
lwn-d59dd4620fb8d6422555a9e2b82a707718e68327.zip
[PATCH] use smp_mb/wmb/rmb where possible
Replace a number of memory barriers with smp_ variants. This means we won't take the unnecessary hit on UP machines. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel/kthread.c')
-rw-r--r--kernel/kthread.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/kthread.c b/kernel/kthread.c
index e377e2244103..f50f174e92da 100644
--- a/kernel/kthread.c
+++ b/kernel/kthread.c
@@ -174,7 +174,7 @@ int kthread_stop(struct task_struct *k)
/* Must init completion *before* thread sees kthread_stop_info.k */
init_completion(&kthread_stop_info.done);
- wmb();
+ smp_wmb();
/* Now set kthread_should_stop() to true, and wake it up. */
kthread_stop_info.k = k;