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