diff options
| -rw-r--r-- | include/asm-generic/bug.h | 22 | ||||
| -rw-r--r-- | kernel/panic.c | 22 |
2 files changed, 44 insertions, 0 deletions
diff --git a/include/asm-generic/bug.h b/include/asm-generic/bug.h index 2632328d864..a346e744e77 100644 --- a/include/asm-generic/bug.h +++ b/include/asm-generic/bug.h @@ -34,9 +34,14 @@ struct bug_entry { #ifndef __WARN #ifndef __ASSEMBLY__ extern void warn_on_slowpath(const char *file, const int line); +extern void warn_slowpath(const char *file, const int line, + const char *fmt, ...) __attribute__((format(printf, 3, 4))); #define WANT_WARN_ON_SLOWPATH #endif #define __WARN() warn_on_slowpath(__FILE__, __LINE__) +#define __WARN_printf(arg...) warn_slowpath(__FILE__, __LINE__, arg) +#else +#define __WARN_printf(arg...) __WARN() #endif #ifndef WARN_ON @@ -48,6 +53,15 @@ extern void warn_on_slowpath(const char *file, const int line); }) #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 + #else /* !CONFIG_BUG */ #ifndef HAVE_ARCH_BUG #define BUG() @@ -63,6 +77,14 @@ extern void warn_on_slowpath(const char *file, const int line); unlikely(__ret_warn_on); \ }) #endif + +#ifndef WARN +#define WARN(condition, format...) ({ \ + int __ret_warn_on = !!(condition); \ + unlikely(__ret_warn_on); \ +}) +#endif + #endif #define WARN_ON_ONCE(condition) ({ \ diff --git a/kernel/panic.c b/kernel/panic.c index 425567f45b9..12c5a0a6c89 100644 --- a/kernel/panic.c +++ b/kernel/panic.c @@ -318,6 +318,28 @@ void warn_on_slowpath(const char *file, int line) add_taint(TAINT_WARN); } EXPORT_SYMBOL(warn_on_slowpath); + + +void warn_slowpath(const char *file, int line, const char *fmt, ...) +{ + va_list args; + char function[KSYM_SYMBOL_LEN]; + unsigned long caller = (unsigned long)__builtin_return_address(0); + sprint_symbol(function, caller); + + printk(KERN_WARNING "------------[ cut here ]------------\n"); + printk(KERN_WARNING "WARNING: at %s:%d %s()\n", file, + line, function); + va_start(args, fmt); + vprintk(fmt, args); + va_end(args); + + print_modules(); + dump_stack(); + print_oops_end_marker(); + add_taint(TAINT_WARN); +} +EXPORT_SYMBOL(warn_slowpath); #endif #ifdef CONFIG_CC_STACKPROTECTOR |