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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__
44extern void warn_on_slowpath(const char *file, const int line);
Arjan van de Vena8f18b92008-07-25 01:45:53 -070045extern void warn_slowpath(const char *file, const int line,
46 const char *fmt, ...) __attribute__((format(printf, 3, 4)));
Arjan van de Ven79b4cc52008-01-30 13:32:50 +010047#define WANT_WARN_ON_SLOWPATH
48#endif
49#define __WARN() warn_on_slowpath(__FILE__, __LINE__)
Arjan van de Vena8f18b92008-07-25 01:45:53 -070050#define __WARN_printf(arg...) warn_slowpath(__FILE__, __LINE__, arg)
51#else
Arjan van de Venf6f286f2008-10-20 14:41:03 -070052#define __WARN_printf(arg...) do { printk(arg); __WARN(); } while (0)
Olof Johansson3a6a62f92008-01-30 13:32:50 +010053#endif
54
55#ifndef WARN_ON
Herbert Xu684f9782006-09-29 01:59:06 -070056#define WARN_ON(condition) ({ \
Linus Torvalds8d4fbcf2007-07-31 21:12:07 -070057 int __ret_warn_on = !!(condition); \
Olof Johansson3a6a62f92008-01-30 13:32:50 +010058 if (unlikely(__ret_warn_on)) \
59 __WARN(); \
Herbert Xu684f9782006-09-29 01:59:06 -070060 unlikely(__ret_warn_on); \
61})
Linus Torvalds1da177e2005-04-16 15:20:36 -070062#endif
63
Arjan van de Vena8f18b92008-07-25 01:45:53 -070064#ifndef WARN
65#define WARN(condition, format...) ({ \
66 int __ret_warn_on = !!(condition); \
67 if (unlikely(__ret_warn_on)) \
68 __WARN_printf(format); \
69 unlikely(__ret_warn_on); \
70})
71#endif
72
Matt Mackallc8538a72005-05-01 08:59:01 -070073#else /* !CONFIG_BUG */
74#ifndef HAVE_ARCH_BUG
75#define BUG()
76#endif
77
Matt Mackallc8538a72005-05-01 08:59:01 -070078#ifndef HAVE_ARCH_BUG_ON
79#define BUG_ON(condition) do { if (condition) ; } while(0)
80#endif
81
82#ifndef HAVE_ARCH_WARN_ON
Ralf Baechle8c7c7c92006-10-19 23:28:34 -070083#define WARN_ON(condition) ({ \
Linus Torvalds8d4fbcf2007-07-31 21:12:07 -070084 int __ret_warn_on = !!(condition); \
Ralf Baechle8c7c7c92006-10-19 23:28:34 -070085 unlikely(__ret_warn_on); \
86})
Matt Mackallc8538a72005-05-01 08:59:01 -070087#endif
Arjan van de Vena8f18b92008-07-25 01:45:53 -070088
89#ifndef WARN
90#define WARN(condition, format...) ({ \
91 int __ret_warn_on = !!(condition); \
92 unlikely(__ret_warn_on); \
93})
94#endif
95
Matt Mackallc8538a72005-05-01 08:59:01 -070096#endif
97
Andrew Mortond69a8922006-10-06 00:43:49 -070098#define WARN_ON_ONCE(condition) ({ \
99 static int __warned; \
Linus Torvalds8d4fbcf2007-07-31 21:12:07 -0700100 int __ret_warn_once = !!(condition); \
Andrew Mortond69a8922006-10-06 00:43:49 -0700101 \
102 if (unlikely(__ret_warn_once)) \
103 if (WARN_ON(!__warned)) \
104 __warned = 1; \
105 unlikely(__ret_warn_once); \
Ingo Molnar74bb6a02006-06-25 05:48:09 -0700106})
107
Arjan van de Ven45e9c0d2008-09-15 16:43:18 -0700108#define WARN_ONCE(condition, format...) ({ \
109 static int __warned; \
110 int __ret_warn_once = !!(condition); \
111 \
112 if (unlikely(__ret_warn_once)) \
113 if (WARN(!__warned, format)) \
114 __warned = 1; \
115 unlikely(__ret_warn_once); \
116})
117
Dave Young717115e2008-07-25 01:45:58 -0700118#define WARN_ON_RATELIMIT(condition, state) \
119 WARN_ON((condition) && __ratelimit(state))
120
Ingo Molnar8eb94f82006-06-27 02:54:50 -0700121#ifdef CONFIG_SMP
122# define WARN_ON_SMP(x) WARN_ON(x)
123#else
124# define WARN_ON_SMP(x) do { } while (0)
125#endif
126
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127#endif