Pileus Git - ~andy/linux/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 #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_slowpath(const char *file, const int line,
  45                 const char *fmt, ...) __attribute__((format(printf, 3, 4)));
  46 #define WANT_WARN_ON_SLOWPATH
  47 #endif
  48 #define __WARN()                warn_slowpath(__FILE__, __LINE__, NULL)
  49 #define __WARN_printf(arg...)   warn_slowpath(__FILE__, __LINE__, arg)
  50 #else
  51 #define __WARN_printf(arg...)   do { printk(arg); __WARN(); } while (0)
  52 #endif
  53
  54 #ifndef WARN_ON
  55 #define WARN_ON(condition) ({                                           \
  56         int __ret_warn_on = !!(condition);                              \
  57         if (unlikely(__ret_warn_on))                                    \
  58                 __WARN();                                               \
  59         unlikely(__ret_warn_on);                                        \
  60 })
  61 #endif
  62
  63 #ifndef WARN
  64 #define WARN(condition, format...) ({                                           \
  65         int __ret_warn_on = !!(condition);                              \
  66         if (unlikely(__ret_warn_on))                                    \
  67                 __WARN_printf(format);                                  \
  68         unlikely(__ret_warn_on);                                        \
  69 })
  70 #endif
  71
  72 #else /* !CONFIG_BUG */
  73 #ifndef HAVE_ARCH_BUG
  74 #define BUG()
  75 #endif
  76
  77 #ifndef HAVE_ARCH_BUG_ON
  78 #define BUG_ON(condition) do { if (condition) ; } while(0)
  79 #endif
  80
  81 #ifndef HAVE_ARCH_WARN_ON
  82 #define WARN_ON(condition) ({                                           \
  83         int __ret_warn_on = !!(condition);                              \
  84         unlikely(__ret_warn_on);                                        \
  85 })
  86 #endif
  87
  88 #ifndef WARN
  89 #define WARN(condition, format...) ({                                   \
  90         int __ret_warn_on = !!(condition);                              \
  91         unlikely(__ret_warn_on);                                        \
  92 })
  93 #endif
  94
  95 #endif
  96
  97 #define WARN_ON_ONCE(condition) ({                              \
  98         static int __warned;                                    \
  99         int __ret_warn_once = !!(condition);                    \
 100                                                                 \
 101         if (unlikely(__ret_warn_once))                          \
 102                 if (WARN_ON(!__warned))                         \
 103                         __warned = 1;                           \
 104         unlikely(__ret_warn_once);                              \
 105 })
 106
 107 #define WARN_ONCE(condition, format...) ({                      \
 108         static int __warned;                                    \
 109         int __ret_warn_once = !!(condition);                    \
 110                                                                 \
 111         if (unlikely(__ret_warn_once))                          \
 112                 if (WARN(!__warned, format))                    \
 113                         __warned = 1;                           \
 114         unlikely(__ret_warn_once);                              \
 115 })
 116
 117 #define WARN_ON_RATELIMIT(condition, state)                     \
 118                 WARN_ON((condition) && __ratelimit(state))
 119
 120 #ifdef CONFIG_SMP
 121 # define WARN_ON_SMP(x)                 WARN_ON(x)
 122 #else
 123 # define WARN_ON_SMP(x)                 do { } while (0)
 124 #endif
 125
 126 #endif