aboutsummaryrefslogtreecommitdiff
path: root/include/asm-generic/bug.h
blob: 8ceab7bcd8b4f229f45536f8208e5394c99e9695 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
#ifndef _ASM_GENERIC_BUG_H
#define _ASM_GENERIC_BUG_H

#include <linux/compiler.h>

#ifdef CONFIG_BUG
#ifndef HAVE_ARCH_BUG
#define BUG() do { \
	printk("BUG: failure at %s:%d/%s()!\n", __FILE__, __LINE__, __FUNCTION__); \
	panic("BUG!"); \
} while (0)
#endif

#ifndef HAVE_ARCH_BUG_ON
#define BUG_ON(condition) do { if (unlikely((condition)!=0)) BUG(); } while(0)
#endif

#ifndef HAVE_ARCH_WARN_ON
#define WARN_ON(condition) do { \
	if (unlikely((condition)!=0)) { \
		printk("BUG: warning at %s:%d/%s()\n", __FILE__, __LINE__, __FUNCTION__); \
		dump_stack(); \
	} \
} while (0)
#endif

#else /* !CONFIG_BUG */
#ifndef HAVE_ARCH_BUG
#define BUG()
#endif

#ifndef HAVE_ARCH_BUG_ON
#define BUG_ON(condition) do { if (condition) ; } while(0)
#endif

#ifndef HAVE_ARCH_WARN_ON
#define WARN_ON(condition) do { if (condition) ; } while(0)
#endif
#endif

#define WARN_ON_ONCE(condition)				\
({							\
	static int __warn_once = 1;			\
	int __ret = 0;					\
							\
	if (unlikely((condition) && __warn_once)) {	\
		__warn_once = 0;			\
		WARN_ON(1);				\
		__ret = 1;				\
	}						\
	__ret;						\
})

#ifdef CONFIG_SMP
# define WARN_ON_SMP(x)			WARN_ON(x)
#else
# define WARN_ON_SMP(x)			do { } while (0)
#endif

#endif