V4L/DVB (10094): Add tw9910 driver
[linux-2.6.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
8 #ifdef CONFIG_GENERIC_BUG
9 #ifndef __ASSEMBLY__
10 struct bug_entry {
11 #ifndef CONFIG_GENERIC_BUG_RELATIVE_POINTERS
12         unsigned long   bug_addr;
13 #else
14         signed int      bug_addr_disp;
15 #endif
16 #ifdef CONFIG_DEBUG_BUGVERBOSE
17 #ifndef CONFIG_GENERIC_BUG_RELATIVE_POINTERS
18         const char      *file;
19 #else
20         signed int      file_disp;
21 #endif
22         unsigned short  line;
23 #endif
24         unsigned short  flags;
25 };
26 #endif          /* __ASSEMBLY__ */
27
28 #define BUGFLAG_WARNING (1<<0)
29 #endif  /* CONFIG_GENERIC_BUG */
30
31 #ifndef HAVE_ARCH_BUG
32 #define BUG() do { \
33         printk("BUG: failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); \
34         panic("BUG!"); \
35 } while (0)
36 #endif
37
38 #ifndef HAVE_ARCH_BUG_ON
39 #define BUG_ON(condition) do { if (unlikely(condition)) BUG(); } while(0)
40 #endif
41
42 #ifndef __WARN
43 #ifndef __ASSEMBLY__
44 extern void warn_on_slowpath(const char *file, const int line);
45 extern void warn_slowpath(const char *file, const int line,
46                 const char *fmt, ...) __attribute__((format(printf, 3, 4)));
47 #define WANT_WARN_ON_SLOWPATH
48 #endif
49 #define __WARN() warn_on_slowpath(__FILE__, __LINE__)
50 #define __WARN_printf(arg...) warn_slowpath(__FILE__, __LINE__, arg)
51 #else
52 #define __WARN_printf(arg...) do { printk(arg); __WARN(); } while (0)
53 #endif
54
55 #ifndef WARN_ON
56 #define WARN_ON(condition) ({                                           \
57         int __ret_warn_on = !!(condition);                              \
58         if (unlikely(__ret_warn_on))                                    \
59                 __WARN();                                               \
60         unlikely(__ret_warn_on);                                        \
61 })
62 #endif
63
64 #ifndef WARN
65 #define WARN(condition, format...) ({                                           \
66         int __ret_warn_on = !!(condition);                              \
67         if (unlikely(__ret_warn_on))                                    \
68                 __WARN_printf(format);                                  \
69         unlikely(__ret_warn_on);                                        \
70 })
71 #endif
72
73 #else /* !CONFIG_BUG */
74 #ifndef HAVE_ARCH_BUG
75 #define BUG()
76 #endif
77
78 #ifndef HAVE_ARCH_BUG_ON
79 #define BUG_ON(condition) do { if (condition) ; } while(0)
80 #endif
81
82 #ifndef HAVE_ARCH_WARN_ON
83 #define WARN_ON(condition) ({                                           \
84         int __ret_warn_on = !!(condition);                              \
85         unlikely(__ret_warn_on);                                        \
86 })
87 #endif
88
89 #ifndef WARN
90 #define WARN(condition, format...) ({                                   \
91         int __ret_warn_on = !!(condition);                              \
92         unlikely(__ret_warn_on);                                        \
93 })
94 #endif
95
96 #endif
97
98 #define WARN_ON_ONCE(condition) ({                              \
99         static int __warned;                                    \
100         int __ret_warn_once = !!(condition);                    \
101                                                                 \
102         if (unlikely(__ret_warn_once))                          \
103                 if (WARN_ON(!__warned))                         \
104                         __warned = 1;                           \
105         unlikely(__ret_warn_once);                              \
106 })
107
108 #define WARN_ONCE(condition, format...) ({                      \
109         static int __warned;                                    \
110         int __ret_warn_once = !!(condition);                    \
111                                                                 \
112         if (unlikely(__ret_warn_once))                          \
113                 if (WARN(!__warned, format))                    \
114                         __warned = 1;                           \
115         unlikely(__ret_warn_once);                              \
116 })
117
118 #define WARN_ON_RATELIMIT(condition, state)                     \
119                 WARN_ON((condition) && __ratelimit(state))
120
121 #ifdef CONFIG_SMP
122 # define WARN_ON_SMP(x)                 WARN_ON(x)
123 #else
124 # define WARN_ON_SMP(x)                 do { } while (0)
125 #endif
126
127 #endif