diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/panic.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/kernel/panic.c b/kernel/panic.c index da4d6bac270e..0ebea438278a 100644 --- a/kernel/panic.c +++ b/kernel/panic.c @@ -20,6 +20,7 @@ #include <linux/kexec.h> #include <linux/debug_locks.h> #include <linux/random.h> +#include <linux/kallsyms.h> int panic_on_oops; int tainted; @@ -292,6 +293,20 @@ void oops_exit(void) (unsigned long long)oops_id); } +#ifdef WANT_WARN_ON_SLOWPATH +void warn_on_slowpath(const char *file, int line) +{ + char function[KSYM_SYMBOL_LEN]; + unsigned long caller = (unsigned long) __builtin_return_address(0); + + sprint_symbol(function, caller); + printk(KERN_WARNING "WARNING: at %s:%d %s()\n", file, + line, function); + dump_stack(); +} +EXPORT_SYMBOL(warn_on_slowpath); +#endif + #ifdef CONFIG_CC_STACKPROTECTOR /* * Called when gcc's -fstack-protector feature is used, and |