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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _ASM_GENERIC_BUG_H
2#define _ASM_GENERIC_BUG_H
3
4#include <linux/compiler.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -07005
Matt Mackallc8538a72005-05-01 08:59:01 -07006#ifdef CONFIG_BUG
Jeremy Fitzhardinge7664c5a2006-12-08 02:36:19 -08007
8#ifdef CONFIG_GENERIC_BUG
9#ifndef __ASSEMBLY__
10struct bug_entry {
Jan Beulichb93a5312008-12-16 11:40:27 +000011#ifndef CONFIG_GENERIC_BUG_RELATIVE_POINTERS
Jeremy Fitzhardinge7664c5a2006-12-08 02:36:19 -080012 unsigned long bug_addr;
Jan Beulichb93a5312008-12-16 11:40:27 +000013#else
14 signed int bug_addr_disp;
15#endif
Jeremy Fitzhardinge7664c5a2006-12-08 02:36:19 -080016#ifdef CONFIG_DEBUG_BUGVERBOSE
Jan Beulichb93a5312008-12-16 11:40:27 +000017#ifndef CONFIG_GENERIC_BUG_RELATIVE_POINTERS
Jeremy Fitzhardinge7664c5a2006-12-08 02:36:19 -080018 const char *file;
Jan Beulichb93a5312008-12-16 11:40:27 +000019#else
20 signed int file_disp;
21#endif
Jeremy Fitzhardinge7664c5a2006-12-08 02:36:19 -080022 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070031#ifndef HAVE_ARCH_BUG
32#define BUG() do { \
Harvey Harrisond5c003b2008-10-15 22:01:24 -070033 printk("BUG: failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); \
Linus Torvalds1da177e2005-04-16 15:20:36 -070034 panic("BUG!"); \
35} while (0)
36#endif
37
Linus Torvalds1da177e2005-04-16 15:20:36 -070038#ifndef HAVE_ARCH_BUG_ON
Alexey Dobriyan2a41de42007-07-17 04:03:56 -070039#define BUG_ON(condition) do { if (unlikely(condition)) BUG(); } while(0)
Linus Torvalds1da177e2005-04-16 15:20:36 -070040#endif
41
Olof Johansson3a6a62f92008-01-30 13:32:50 +010042#ifndef __WARN
Arjan van de Ven79b4cc52008-01-30 13:32:50 +010043#ifndef __ASSEMBLY__
Arjan van de Vena8f18b92008-07-25 01:45:53 -070044extern void warn_slowpath(const char *file, const int line,
45 const char *fmt, ...) __attribute__((format(printf, 3, 4)));
Arjan van de Ven79b4cc52008-01-30 13:32:50 +010046#define WANT_WARN_ON_SLOWPATH
47#endif
Ingo Molnarec5679e2008-11-28 17:56:14 +010048#define __WARN() warn_slowpath(__FILE__, __LINE__, NULL)
49#define __WARN_printf(arg...) warn_slowpath(__FILE__, __LINE__, arg)
Arjan van de Vena8f18b92008-07-25 01:45:53 -070050#else
Ingo Molnarec5679e2008-11-28 17:56:14 +010051#define __WARN_printf(arg...) do { printk(arg); __WARN(); } while (0)
Olof Johansson3a6a62f92008-01-30 13:32:50 +010052#endif
53
54#ifndef WARN_ON
Herbert Xu684f9782006-09-29 01:59:06 -070055#define WARN_ON(condition) ({ \
Linus Torvalds8d4fbcf2007-07-31 21:12:07 -070056 int __ret_warn_on = !!(condition); \
Olof Johansson3a6a62f92008-01-30 13:32:50 +010057 if (unlikely(__ret_warn_on)) \
58 __WARN(); \
Herbert Xu684f9782006-09-29 01:59:06 -070059 unlikely(__ret_warn_on); \
60})
Linus Torvalds1da177e2005-04-16 15:20:36 -070061#endif
62
Arjan van de Vena8f18b92008-07-25 01:45:53 -070063#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
Matt Mackallc8538a72005-05-01 08:59:01 -070072#else /* !CONFIG_BUG */
73#ifndef HAVE_ARCH_BUG
74#define BUG()
75#endif
76
Matt Mackallc8538a72005-05-01 08:59:01 -070077#ifndef HAVE_ARCH_BUG_ON
78#define BUG_ON(condition) do { if (condition) ; } while(0)
79#endif
80
81#ifndef HAVE_ARCH_WARN_ON
Ralf Baechle8c7c7c92006-10-19 23:28:34 -070082#define WARN_ON(condition) ({ \
Linus Torvalds8d4fbcf2007-07-31 21:12:07 -070083 int __ret_warn_on = !!(condition); \
Ralf Baechle8c7c7c92006-10-19 23:28:34 -070084 unlikely(__ret_warn_on); \
85})
Matt Mackallc8538a72005-05-01 08:59:01 -070086#endif
Arjan van de Vena8f18b92008-07-25 01:45:53 -070087
88#ifndef WARN
89#define WARN(condition, format...) ({ \
90 int __ret_warn_on = !!(condition); \
91 unlikely(__ret_warn_on); \
92})
93#endif
94
Matt Mackallc8538a72005-05-01 08:59:01 -070095#endif
96
Andrew Mortond69a8922006-10-06 00:43:49 -070097#define WARN_ON_ONCE(condition) ({ \
98 static int __warned; \
Linus Torvalds8d4fbcf2007-07-31 21:12:07 -070099 int __ret_warn_once = !!(condition); \
Andrew Mortond69a8922006-10-06 00:43:49 -0700100 \
101 if (unlikely(__ret_warn_once)) \
102 if (WARN_ON(!__warned)) \
103 __warned = 1; \
104 unlikely(__ret_warn_once); \
Ingo Molnar74bb6a02006-06-25 05:48:09 -0700105})
106
Arjan van de Ven45e9c0d2008-09-15 16:43:18 -0700107#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
Dave Young717115e2008-07-25 01:45:58 -0700117#define WARN_ON_RATELIMIT(condition, state) \
118 WARN_ON((condition) && __ratelimit(state))
119
Ingo Molnar8eb94f82006-06-27 02:54:50 -0700120#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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126#endif