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bug.h: move runtime BUG/WARN macros into <linux/bug.h>

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Collect runtime BUG/WARN into a self-contained header <linux/bug.h>
to make these macros easier to use.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Masahiro Yamada 2017-09-16 14:10:45 +09:00 • committed by Tom Rini
parent 059a48096c
commit 0a70fb4c1c
4 changed files with 29 additions and 24 deletions
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28
include/linux/bug.h
View file

@ -1,6 +1,34 @@
#ifndef _LINUX_BUG_H
#define _LINUX_BUG_H
#include <vsprintf.h> /* for panic() */
#include <linux/build_bug.h>
#include <linux/compiler.h>
#include <linux/printk.h>
#define BUG() do { \
printk("BUG at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); \
panic("BUG!"); \
} while (0)
#define BUG_ON(condition) do { if (unlikely(condition)) BUG(); } while (0)
#define WARN_ON(condition) ({ \
int __ret_warn_on = !!(condition); \
if (unlikely(__ret_warn_on)) \
printk("WARNING at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); \
unlikely(__ret_warn_on); \
})
#define WARN_ON_ONCE(condition) ({ \
static bool __warned; \
int __ret_warn_once = !!(condition); \
\
if (unlikely(__ret_warn_once && !__warned)) { \
__warned = true; \
WARN_ON(1); \
} \
unlikely(__ret_warn_once); \
})
#endif /* _LINUX_BUG_H */