diff options
author | Ingo Molnar <mingo@elte.hu> | 2006-06-25 08:48:09 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-25 13:01:11 -0400 |
commit | 74bb6a09b2e1e69d91eb6069eb4a7f0c06b84812 (patch) | |
tree | f55af6ec05bd7f547abf4cf9384e94570076d8c3 /include/asm-generic/bug.h | |
parent | 69755652c92106855b4b096b7c2935b59e6252c6 (diff) |
[PATCH] introduce WARN_ON_ONCE(cond)
Add WARN_ON_ONCE(cond) to print once-per-bootup messages.
[rostedt@goodmis.org: improve code generation]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-generic/bug.h')
-rw-r--r-- | include/asm-generic/bug.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/asm-generic/bug.h b/include/asm-generic/bug.h index 0cd9711895f..845cb67ad8e 100644 --- a/include/asm-generic/bug.h +++ b/include/asm-generic/bug.h | |||
@@ -38,4 +38,17 @@ | |||
38 | #endif | 38 | #endif |
39 | #endif | 39 | #endif |
40 | 40 | ||
41 | #define WARN_ON_ONCE(condition) \ | ||
42 | ({ \ | ||
43 | static int __warn_once = 1; \ | ||
44 | int __ret = 0; \ | ||
45 | \ | ||
46 | if (unlikely((condition) && __warn_once)) { \ | ||
47 | __warn_once = 0; \ | ||
48 | WARN_ON(1); \ | ||
49 | __ret = 1; \ | ||
50 | } \ | ||
51 | __ret; \ | ||
52 | }) | ||
53 | |||
41 | #endif | 54 | #endif |