diff options
Diffstat (limited to 'kernel/trace/ftrace.c')
| -rw-r--r-- | kernel/trace/ftrace.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 0f271c45cd02..4231a3dc224a 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -1602,6 +1602,23 @@ core_initcall(ftrace_dynamic_init); #endif /* CONFIG_DYNAMIC_FTRACE */ /** + * ftrace_kill_atomic - kill ftrace from critical sections + * + * This function should be used by panic code. It stops ftrace + * but in a not so nice way. If you need to simply kill ftrace + * from a non-atomic section, use ftrace_kill. + */ +void ftrace_kill_atomic(void) +{ + ftrace_disabled = 1; + ftrace_enabled = 0; +#ifdef CONFIG_DYNAMIC_FTRACE + ftraced_suspend = -1; +#endif + clear_ftrace_function(); +} + +/** * ftrace_kill - totally shutdown ftrace * * This is a safety measure. If something was detected that seems |