Messages in this thread Patch in this message | | | Date | Mon, 29 May 2006 23:23:28 +0200 | From | Ingo Molnar <> | Subject | [patch 05/61] lock validator: introduce WARN_ON_ONCE(cond) |
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From: Ingo Molnar <mingo@elte.hu>
add WARN_ON_ONCE(cond) to print once-per-bootup messages.
Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> --- include/asm-generic/bug.h | 13 +++++++++++++ 1 file changed, 13 insertions(+)
Index: linux/include/asm-generic/bug.h =================================================================== --- linux.orig/include/asm-generic/bug.h +++ linux/include/asm-generic/bug.h @@ -44,4 +44,17 @@ # define WARN_ON_SMP(x) do { } while (0) #endif +#define WARN_ON_ONCE(condition) \ +({ \ + static int __warn_once = 1; \ + int __ret = 0; \ + \ + if (unlikely(__warn_once && (condition))) { \ + __warn_once = 0; \ + WARN_ON(1); \ + __ret = 1; \ + } \ + __ret; \ +}) + #endif - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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