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)!=0)) BUG(); } while(0)
  32 #endif
  33
  34 #ifndef HAVE_ARCH_WARN_ON
  35 #define WARN_ON(condition) ({                                           \
  36         typeof(condition) __ret_warn_on = (condition);                  \
  37         if (unlikely(__ret_warn_on)) {                                  \
  38                 printk("WARNING at %s:%d %s()\n", __FILE__,     \
  39                         __LINE__, __FUNCTION__);                        \
  40                 dump_stack();                                           \
  41         }                                                               \
  42         unlikely(__ret_warn_on);                                        \
  43 })
  44 #endif
  45
  46 #else /* !CONFIG_BUG */
  47 #ifndef HAVE_ARCH_BUG
  48 #define BUG()
  49 #endif
  50
  51 #ifndef HAVE_ARCH_BUG_ON
  52 #define BUG_ON(condition) do { if (condition) ; } while(0)
  53 #endif
  54
  55 #ifndef HAVE_ARCH_WARN_ON
  56 #define WARN_ON(condition) ({                                           \
  57         typeof(condition) __ret_warn_on = (condition);                  \
  58         unlikely(__ret_warn_on);                                        \
  59 })
  60 #endif
  61 #endif
  62
  63 #define WARN_ON_ONCE(condition) ({                              \
  64         static int __warned;                                    \
  65         typeof(condition) __ret_warn_once = (condition);        \
  66                                                                 \
  67         if (unlikely(__ret_warn_once))                          \
  68                 if (WARN_ON(!__warned))                         \
  69                         __warned = 1;                           \
  70         unlikely(__ret_warn_once);                              \
  71 })
  72
  73 #ifdef CONFIG_SMP
  74 # define WARN_ON_SMP(x)                 WARN_ON(x)
  75 #else
  76 # define WARN_ON_SMP(x)                 do { } while (0)
  77 #endif
  78
  79 #endif