Re: [patch] warn-on-once.patch

[Ingo Molnar <mingo@elte.hu>]

* Ingo Molnar <mingo@elte.hu> wrote:

> - introduce WARN_ON_ONCE(cond)

replacement patch below - fixed bug found by Thomas Gleixner. (I've 
updated the gtod-B11-cleanup.tar.gz patchqueue with both this fix and 
the x64 fix.)

	Ingo

 include/asm-generic/bug.h |   10 ++++++++++
 1 files changed, 10 insertions(+)

Index: linux/include/asm-generic/bug.h
===================================================================
--- linux.orig/include/asm-generic/bug.h
+++ linux/include/asm-generic/bug.h
@@ -39,4 +39,14 @@
 #endif
 #endif
 
+#define WARN_ON_ONCE(condition)		\
+do {					\
+	static int warn_once = 1;	\
+					\
+	if (warn_once && (condition)) {	\
+		warn_once = 0;		\
+		WARN_ON(1);		\
+	}				\
+} while (0);
+
 #endif