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debug: introduce __WARN()

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Introduce __WARN() in the generic case, so the generic WARN_ON()
can use arch-specific code for when the condition is true.

Signed-off-by: Olof Johansson <olof@lixom.net>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Olof Johansson 2008-01-30 13:32:50 +01:00 committed by Ingo Molnar
parent f315decbd0
commit 3a6a62f96f
1 changed files with 11 additions and 6 deletions
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17
include/asm-generic/bug.h
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@ -31,14 +31,19 @@ struct bug_entry {
#define BUG_ON(condition) do { if (unlikely(condition)) BUG(); } while(0)
#endif
#ifndef HAVE_ARCH_WARN_ON
#ifndef __WARN
#define __WARN() do { \
printk("WARNING: at %s:%d %s()\n", __FILE__, \
__LINE__, __FUNCTION__); \
dump_stack(); \
} while (0)
#endif
#ifndef WARN_ON
#define WARN_ON(condition) ({ \
int __ret_warn_on = !!(condition); \
if (unlikely(__ret_warn_on)) { \
printk("WARNING: at %s:%d %s()\n", __FILE__, \
__LINE__, __FUNCTION__); \
dump_stack(); \
} \
if (unlikely(__ret_warn_on)) \
__WARN(); \
unlikely(__ret_warn_on); \
})
#endif