[PATCH] pi-futex: introduce WARN_ON_SMP

Introduce a new WARN_ON variant: WARN_ON_SMP(cond).

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/include/asm-generic/bug.h b/include/asm-generic/bug.h
index 845cb67ad8ea..8ceab7bcd8b4 100644
--- a/include/asm-generic/bug.h
+++ b/include/asm-generic/bug.h
@@ -51,4 +51,10 @@
         __ret;                                          \
 })
 
+#ifdef CONFIG_SMP
+# define WARN_ON_SMP(x)                 WARN_ON(x)
+#else
+# define WARN_ON_SMP(x)                 do { } while (0)
+#endif
+
 #endif