Merge branch 'tip/perf/core' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace into perf/core

Pull ftrace robustization fixes from Steve Rostedt.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2012-06-18 10:57:51 +02:00
commit 4983955c04
3 changed files with 6 additions and 7 deletions

View file

@ -207,6 +207,9 @@ struct ftrace_event_call {
* bit 1: enabled
* bit 2: filter_active
* bit 3: enabled cmd record
* bit 4: allow trace by non root (cap any)
* bit 5: failed to apply filter
* bit 6: ftrace internal event (do not enable)
*
* Changes to flags must hold the event_mutex.
*

View file

@ -312,7 +312,7 @@ static int remove_ftrace_list_ops(struct ftrace_ops **list,
static int __register_ftrace_function(struct ftrace_ops *ops)
{
if (ftrace_disabled)
if (unlikely(ftrace_disabled))
return -ENODEV;
if (FTRACE_WARN_ON(ops == &global_ops))
@ -4299,16 +4299,12 @@ int register_ftrace_function(struct ftrace_ops *ops)
mutex_lock(&ftrace_lock);
if (unlikely(ftrace_disabled))
goto out_unlock;
ret = __register_ftrace_function(ops);
if (!ret)
ret = ftrace_startup(ops, 0);
out_unlock:
mutex_unlock(&ftrace_lock);
return ret;
}
EXPORT_SYMBOL_GPL(register_ftrace_function);

View file

@ -1325,4 +1325,4 @@ __init static int init_events(void)
return 0;
}
device_initcall(init_events);
early_initcall(init_events);