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[mirror_ubuntu-bionic-kernel.git] / include / asm-generic / bug.h
1 #ifndef _ASM_GENERIC_BUG_H
2 #define _ASM_GENERIC_BUG_H
3
4 #include <linux/compiler.h>
5
6 #ifdef CONFIG_BUG
7 #ifndef HAVE_ARCH_BUG
8 #define BUG() do { \
9 printk("BUG: failure at %s:%d/%s()!\n", __FILE__, __LINE__, __FUNCTION__); \
10 panic("BUG!"); \
11 } while (0)
12 #endif
13
14 #ifndef HAVE_ARCH_BUG_ON
15 #define BUG_ON(condition) do { if (unlikely((condition)!=0)) BUG(); } while(0)
16 #endif
17
18 #ifndef HAVE_ARCH_WARN_ON
19 #define WARN_ON(condition) ({ \
20 typeof(condition) __ret_warn_on = (condition); \
21 if (unlikely(__ret_warn_on)) { \
22 printk("BUG: warning at %s:%d/%s()\n", __FILE__, \
23 __LINE__, __FUNCTION__); \
24 dump_stack(); \
25 } \
26 unlikely(__ret_warn_on); \
27 })
28 #endif
29
30 #else /* !CONFIG_BUG */
31 #ifndef HAVE_ARCH_BUG
32 #define BUG()
33 #endif
34
35 #ifndef HAVE_ARCH_BUG_ON
36 #define BUG_ON(condition) do { if (condition) ; } while(0)
37 #endif
38
39 #ifndef HAVE_ARCH_WARN_ON
40 #define WARN_ON(condition) unlikely((condition))
41 #endif
42 #endif
43
44 #define WARN_ON_ONCE(condition) ({ \
45 static int __warn_once = 1; \
46 typeof(condition) __ret_warn_once = (condition);\
47 \
48 if (likely(__warn_once)) \
49 if (WARN_ON(__ret_warn_once)) \
50 __warn_once = 0; \
51 unlikely(__ret_warn_once); \
52 })
53
54 #ifdef CONFIG_SMP
55 # define WARN_ON_SMP(x) WARN_ON(x)
56 #else
57 # define WARN_ON_SMP(x) do { } while (0)
58 #endif
59
60 #endif