| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef _ASM_GENERIC_BUG_H | 
|  | 2 | #define _ASM_GENERIC_BUG_H | 
|  | 3 |  | 
|  | 4 | #include <linux/compiler.h> | 
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 |  | 
| Matt Mackall | c8538a7 | 2005-05-01 08:59:01 -0700 | [diff] [blame] | 6 | #ifdef CONFIG_BUG | 
| Jeremy Fitzhardinge | 7664c5a | 2006-12-08 02:36:19 -0800 | [diff] [blame] | 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 |  | 
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | #ifndef HAVE_ARCH_BUG | 
|  | 24 | #define BUG() do { \ | 
| Harvey Harrison | d5c003b | 2008-10-15 22:01:24 -0700 | [diff] [blame] | 25 | printk("BUG: failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); \ | 
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | panic("BUG!"); \ | 
|  | 27 | } while (0) | 
|  | 28 | #endif | 
|  | 29 |  | 
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #ifndef HAVE_ARCH_BUG_ON | 
| Alexey Dobriyan | 2a41de4 | 2007-07-17 04:03:56 -0700 | [diff] [blame] | 31 | #define BUG_ON(condition) do { if (unlikely(condition)) BUG(); } while(0) | 
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | #endif | 
|  | 33 |  | 
| Olof Johansson | 3a6a62f | 2008-01-30 13:32:50 +0100 | [diff] [blame] | 34 | #ifndef __WARN | 
| Arjan van de Ven | 79b4cc5 | 2008-01-30 13:32:50 +0100 | [diff] [blame] | 35 | #ifndef __ASSEMBLY__ | 
|  | 36 | extern void warn_on_slowpath(const char *file, const int line); | 
| Arjan van de Ven | a8f18b9 | 2008-07-25 01:45:53 -0700 | [diff] [blame] | 37 | extern void warn_slowpath(const char *file, const int line, | 
|  | 38 | const char *fmt, ...) __attribute__((format(printf, 3, 4))); | 
| Arjan van de Ven | 79b4cc5 | 2008-01-30 13:32:50 +0100 | [diff] [blame] | 39 | #define WANT_WARN_ON_SLOWPATH | 
|  | 40 | #endif | 
|  | 41 | #define __WARN() warn_on_slowpath(__FILE__, __LINE__) | 
| Arjan van de Ven | a8f18b9 | 2008-07-25 01:45:53 -0700 | [diff] [blame] | 42 | #define __WARN_printf(arg...) warn_slowpath(__FILE__, __LINE__, arg) | 
|  | 43 | #else | 
| Arjan van de Ven | f6f286f | 2008-10-20 14:41:03 -0700 | [diff] [blame] | 44 | #define __WARN_printf(arg...) do { printk(arg); __WARN(); } while (0) | 
| Olof Johansson | 3a6a62f | 2008-01-30 13:32:50 +0100 | [diff] [blame] | 45 | #endif | 
|  | 46 |  | 
|  | 47 | #ifndef WARN_ON | 
| Herbert Xu | 684f978 | 2006-09-29 01:59:06 -0700 | [diff] [blame] | 48 | #define WARN_ON(condition) ({						\ | 
| Linus Torvalds | 8d4fbcf | 2007-07-31 21:12:07 -0700 | [diff] [blame] | 49 | int __ret_warn_on = !!(condition);				\ | 
| Olof Johansson | 3a6a62f | 2008-01-30 13:32:50 +0100 | [diff] [blame] | 50 | if (unlikely(__ret_warn_on))					\ | 
|  | 51 | __WARN();						\ | 
| Herbert Xu | 684f978 | 2006-09-29 01:59:06 -0700 | [diff] [blame] | 52 | unlikely(__ret_warn_on);					\ | 
|  | 53 | }) | 
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | #endif | 
|  | 55 |  | 
| Arjan van de Ven | a8f18b9 | 2008-07-25 01:45:53 -0700 | [diff] [blame] | 56 | #ifndef WARN | 
|  | 57 | #define WARN(condition, format...) ({						\ | 
|  | 58 | int __ret_warn_on = !!(condition);				\ | 
|  | 59 | if (unlikely(__ret_warn_on))					\ | 
|  | 60 | __WARN_printf(format);					\ | 
|  | 61 | unlikely(__ret_warn_on);					\ | 
|  | 62 | }) | 
|  | 63 | #endif | 
|  | 64 |  | 
| Matt Mackall | c8538a7 | 2005-05-01 08:59:01 -0700 | [diff] [blame] | 65 | #else /* !CONFIG_BUG */ | 
|  | 66 | #ifndef HAVE_ARCH_BUG | 
|  | 67 | #define BUG() | 
|  | 68 | #endif | 
|  | 69 |  | 
| Matt Mackall | c8538a7 | 2005-05-01 08:59:01 -0700 | [diff] [blame] | 70 | #ifndef HAVE_ARCH_BUG_ON | 
|  | 71 | #define BUG_ON(condition) do { if (condition) ; } while(0) | 
|  | 72 | #endif | 
|  | 73 |  | 
|  | 74 | #ifndef HAVE_ARCH_WARN_ON | 
| Ralf Baechle | 8c7c7c9 | 2006-10-19 23:28:34 -0700 | [diff] [blame] | 75 | #define WARN_ON(condition) ({						\ | 
| Linus Torvalds | 8d4fbcf | 2007-07-31 21:12:07 -0700 | [diff] [blame] | 76 | int __ret_warn_on = !!(condition);				\ | 
| Ralf Baechle | 8c7c7c9 | 2006-10-19 23:28:34 -0700 | [diff] [blame] | 77 | unlikely(__ret_warn_on);					\ | 
|  | 78 | }) | 
| Matt Mackall | c8538a7 | 2005-05-01 08:59:01 -0700 | [diff] [blame] | 79 | #endif | 
| Arjan van de Ven | a8f18b9 | 2008-07-25 01:45:53 -0700 | [diff] [blame] | 80 |  | 
|  | 81 | #ifndef WARN | 
|  | 82 | #define WARN(condition, format...) ({					\ | 
|  | 83 | int __ret_warn_on = !!(condition);				\ | 
|  | 84 | unlikely(__ret_warn_on);					\ | 
|  | 85 | }) | 
|  | 86 | #endif | 
|  | 87 |  | 
| Matt Mackall | c8538a7 | 2005-05-01 08:59:01 -0700 | [diff] [blame] | 88 | #endif | 
|  | 89 |  | 
| Andrew Morton | d69a892 | 2006-10-06 00:43:49 -0700 | [diff] [blame] | 90 | #define WARN_ON_ONCE(condition)	({				\ | 
|  | 91 | static int __warned;					\ | 
| Linus Torvalds | 8d4fbcf | 2007-07-31 21:12:07 -0700 | [diff] [blame] | 92 | int __ret_warn_once = !!(condition);			\ | 
| Andrew Morton | d69a892 | 2006-10-06 00:43:49 -0700 | [diff] [blame] | 93 | \ | 
|  | 94 | if (unlikely(__ret_warn_once))				\ | 
|  | 95 | if (WARN_ON(!__warned)) 			\ | 
|  | 96 | __warned = 1;				\ | 
|  | 97 | unlikely(__ret_warn_once);				\ | 
| Ingo Molnar | 74bb6a0 | 2006-06-25 05:48:09 -0700 | [diff] [blame] | 98 | }) | 
|  | 99 |  | 
| Arjan van de Ven | 45e9c0d | 2008-09-15 16:43:18 -0700 | [diff] [blame] | 100 | #define WARN_ONCE(condition, format...)	({			\ | 
|  | 101 | static int __warned;					\ | 
|  | 102 | int __ret_warn_once = !!(condition);			\ | 
|  | 103 | \ | 
|  | 104 | if (unlikely(__ret_warn_once))				\ | 
|  | 105 | if (WARN(!__warned, format)) 			\ | 
|  | 106 | __warned = 1;				\ | 
|  | 107 | unlikely(__ret_warn_once);				\ | 
|  | 108 | }) | 
|  | 109 |  | 
| Dave Young | 717115e | 2008-07-25 01:45:58 -0700 | [diff] [blame] | 110 | #define WARN_ON_RATELIMIT(condition, state)			\ | 
|  | 111 | WARN_ON((condition) && __ratelimit(state)) | 
|  | 112 |  | 
| Ingo Molnar | 8eb94f8 | 2006-06-27 02:54:50 -0700 | [diff] [blame] | 113 | #ifdef CONFIG_SMP | 
|  | 114 | # define WARN_ON_SMP(x)			WARN_ON(x) | 
|  | 115 | #else | 
|  | 116 | # define WARN_ON_SMP(x)			do { } while (0) | 
|  | 117 | #endif | 
|  | 118 |  | 
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | #endif |