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__, __FUNCTION__); \
  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_on_slowpath(const char *file, const int line);
  37 #define WANT_WARN_ON_SLOWPATH
  38 #endif
  39 #define __WARN() warn_on_slowpath(__FILE__, __LINE__)
  40 #endif
  41
  42 #ifndef WARN_ON
  43 #define WARN_ON(condition) ({                                           \
  44         int __ret_warn_on = !!(condition);                              \
  45         if (unlikely(__ret_warn_on))                                    \
  46                 __WARN();                                               \
  47         unlikely(__ret_warn_on);                                        \
  48 })
  49 #endif
  50
  51 #else /* !CONFIG_BUG */
  52 #ifndef HAVE_ARCH_BUG
  53 #define BUG()
  54 #endif
  55
  56 #ifndef HAVE_ARCH_BUG_ON
  57 #define BUG_ON(condition) do { if (condition) ; } while(0)
  58 #endif
  59
  60 #ifndef HAVE_ARCH_WARN_ON
  61 #define WARN_ON(condition) ({                                           \
  62         int __ret_warn_on = !!(condition);                              \
  63         unlikely(__ret_warn_on);                                        \
  64 })
  65 #endif
  66 #endif
  67
  68 #define WARN_ON_ONCE(condition) ({                              \
  69         static int __warned;                                    \
  70         int __ret_warn_once = !!(condition);                    \
  71                                                                 \
  72         if (unlikely(__ret_warn_once))                          \
  73                 if (WARN_ON(!__warned))                         \
  74                         __warned = 1;                           \
  75         unlikely(__ret_warn_once);                              \
  76 })
  77
  78 #ifdef CONFIG_SMP
  79 # define WARN_ON_SMP(x)                 WARN_ON(x)
  80 #else
  81 # define WARN_ON_SMP(x)                 do { } while (0)
  82 #endif
  83
  84 #endif