Release 4.7 include/asm-generic/bug.h
#ifndef _ASM_GENERIC_BUG_H
#define _ASM_GENERIC_BUG_H
#include <linux/compiler.h>
#ifdef CONFIG_GENERIC_BUG
#define BUGFLAG_WARNING (1 << 0)
#define BUGFLAG_TAINT(taint) (BUGFLAG_WARNING | ((taint) << 8))
#define BUG_GET_TAINT(bug) ((bug)->flags >> 8)
#endif
#ifndef __ASSEMBLY__
#include <linux/kernel.h>
#ifdef CONFIG_BUG
#ifdef CONFIG_GENERIC_BUG
struct bug_entry {
#ifndef CONFIG_GENERIC_BUG_RELATIVE_POINTERS
unsigned long bug_addr;
#else
signed int bug_addr_disp;
#endif
#ifdef CONFIG_DEBUG_BUGVERBOSE
#ifndef CONFIG_GENERIC_BUG_RELATIVE_POINTERS
const char *file;
#else
signed int file_disp;
#endif
unsigned short line;
#endif
unsigned short flags;
};
#endif /* CONFIG_GENERIC_BUG */
/*
* Don't use BUG() or BUG_ON() unless there's really no way out; one
* example might be detecting data structure corruption in the middle
* of an operation that can't be backed out of. If the (sub)system
* can somehow continue operating, perhaps with reduced functionality,
* it's probably not BUG-worthy.
*
* If you're tempted to BUG(), think again: is completely giving up
* really the *only* solution? There are usually better options, where
* users don't need to reboot ASAP and can mostly shut down cleanly.
*/
#ifndef HAVE_ARCH_BUG
#define BUG() do { \
printk("BUG: failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); \
panic("BUG!"); \
} while (0)
#endif
#ifndef HAVE_ARCH_BUG_ON
#define BUG_ON(condition) do { if (unlikely(condition)) BUG(); } while (0)
#endif
/*
* WARN(), WARN_ON(), WARN_ON_ONCE, and so on can be used to report
* significant issues that need prompt attention if they should ever
* appear at runtime. Use the versions with printk format strings
* to provide better diagnostics.
*/
#ifndef __WARN_TAINT
extern __printf(3, 4)
void warn_slowpath_fmt(const char *file, const int line,
const char *fmt, ...);
extern __printf(4, 5)
void warn_slowpath_fmt_taint(const char *file, const int line, unsigned taint,
const char *fmt, ...);
extern void warn_slowpath_null(const char *file, const int line);
#define WANT_WARN_ON_SLOWPATH
#define __WARN() warn_slowpath_null(__FILE__, __LINE__)
#define __WARN_printf(arg...) warn_slowpath_fmt(__FILE__, __LINE__, arg)
#define __WARN_printf_taint(taint, arg...) \
warn_slowpath_fmt_taint(__FILE__, __LINE__, taint, arg)
#else
#define __WARN() __WARN_TAINT(TAINT_WARN)
#define __WARN_printf(arg...) do { printk(arg); __WARN(); } while (0)
#define __WARN_printf_taint(taint, arg...) \
do { printk(arg); __WARN_TAINT(taint); } while (0)
#endif
/* used internally by panic.c */
struct warn_args;
void __warn(const char *file, int line, void *caller, unsigned taint,
struct pt_regs *regs, struct warn_args *args);
#ifndef WARN_ON
#define WARN_ON(condition) ({ \
int __ret_warn_on = !!(condition); \
if (unlikely(__ret_warn_on)) \
__WARN(); \
unlikely(__ret_warn_on); \
})
#endif
#ifndef WARN
#define WARN(condition, format...) ({ \
int __ret_warn_on = !!(condition); \
if (unlikely(__ret_warn_on)) \
__WARN_printf(format); \
unlikely(__ret_warn_on); \
})
#endif
#define WARN_TAINT(condition, taint, format...) ({ \
int __ret_warn_on = !!(condition); \
if (unlikely(__ret_warn_on)) \
__WARN_printf_taint(taint, format); \
unlikely(__ret_warn_on); \
})
#define WARN_ON_ONCE(condition) ({ \
static bool __section(.data.unlikely) __warned; \
int __ret_warn_once = !!(condition); \
\
if (unlikely(__ret_warn_once && !__warned)) { \
__warned = true; \
WARN_ON(1); \
} \
unlikely(__ret_warn_once); \
})
#define WARN_ONCE(condition, format...) ({ \
static bool __section(.data.unlikely) __warned; \
int __ret_warn_once = !!(condition); \
\
if (unlikely(__ret_warn_once && !__warned)) { \
__warned = true; \
WARN(1, format); \
} \
unlikely(__ret_warn_once); \
})
#define WARN_TAINT_ONCE(condition, taint, format...) ({ \
static bool __section(.data.unlikely) __warned; \
int __ret_warn_once = !!(condition); \
\
if (unlikely(__ret_warn_once && !__warned)) { \
__warned = true; \
WARN_TAINT(1, taint, format); \
} \
unlikely(__ret_warn_once); \
})
#else /* !CONFIG_BUG */
#ifndef HAVE_ARCH_BUG
#define BUG() do {} while (1)
#endif
#ifndef HAVE_ARCH_BUG_ON
#define BUG_ON(condition) do { if (condition) BUG(); } while (0)
#endif
#ifndef HAVE_ARCH_WARN_ON
#define WARN_ON(condition) ({ \
int __ret_warn_on = !!(condition); \
unlikely(__ret_warn_on); \
})
#endif
#ifndef WARN
#define WARN(condition, format...) ({ \
int __ret_warn_on = !!(condition); \
no_printk(format); \
unlikely(__ret_warn_on); \
})
#endif
#define WARN_ON_ONCE(condition) WARN_ON(condition)
#define WARN_ONCE(condition, format...) WARN(condition, format)
#define WARN_TAINT(condition, taint, format...) WARN(condition, format)
#define WARN_TAINT_ONCE(condition, taint, format...) WARN(condition, format)
#endif
/*
* WARN_ON_SMP() is for cases that the warning is either
* meaningless for !SMP or may even cause failures.
* This is usually used for cases that we have
* WARN_ON(!spin_is_locked(&lock)) checks, as spin_is_locked()
* returns 0 for uniprocessor settings.
* It can also be used with values that are only defined
* on SMP:
*
* struct foo {
* [...]
* #ifdef CONFIG_SMP
* int bar;
* #endif
* };
*
* void func(struct foo *zoot)
* {
* WARN_ON_SMP(!zoot->bar);
*
* For CONFIG_SMP, WARN_ON_SMP() should act the same as WARN_ON(),
* and should be a nop and return false for uniprocessor.
*
* if (WARN_ON_SMP(x)) returns true only when CONFIG_SMP is set
* and x is true.
*/
#ifdef CONFIG_SMP
# define WARN_ON_SMP(x) WARN_ON(x)
#else
/*
* Use of ({0;}) because WARN_ON_SMP(x) may be used either as
* a stand alone line statement or as a condition in an if ()
* statement.
* A simple "0" would cause gcc to give a "statement has no effect"
* warning.
*/
# define WARN_ON_SMP(x) ({0;})
#endif
#endif /* __ASSEMBLY__ */
#endif
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ben hutchings | ben hutchings | 80 | 17.13% | 1 | 3.57% |
| matt mackall | matt mackall | 77 | 16.49% | 2 | 7.14% |
| arjan van de ven | arjan van de ven | 75 | 16.06% | 4 | 14.29% |
| josh triplett | josh triplett | 42 | 8.99% | 4 | 14.29% |
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| josh poimboeuf | josh poimboeuf | 33 | 7.07% | 1 | 3.57% |
| paul mundt | paul mundt | 32 | 6.85% | 2 | 7.14% |
| ingo molnar | ingo molnar | 25 | 5.35% | 2 | 7.14% |
| jan beulich | jan beulich | 22 | 4.71% | 1 | 3.57% |
| andi kleen | andi kleen | 16 | 3.43% | 1 | 3.57% |
| olof johansson | olof johansson | 10 | 2.14% | 1 | 3.57% |
| joe perches | joe perches | 10 | 2.14% | 1 | 3.57% |
| steven rostedt | steven rostedt | 6 | 1.28% | 3 | 10.71% |
| david brownell | david brownell | 2 | 0.43% | 1 | 3.57% |
| harvey harrison | harvey harrison | 1 | 0.21% | 1 | 3.57% |
| linus torvalds | linus torvalds | 1 | 0.21% | 1 | 3.57% |
| arnd bergmann | arnd bergmann | 1 | 0.21% | 1 | 3.57% |
| Total | 467 | 100.00% | 28 | 100.00% |
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