Re: [PATCH tracing/kprobes 3/6] ftrace: Fix trace_remove_event_call() to lock trace_event_mutex

[Masami Hiramatsu <mhiramat@redhat.com>]

Steven Rostedt wrote:
> On Mon, 2009-09-14 at 16:49 -0400, Masami Hiramatsu wrote:
> 
>>
>> diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
>> index 38e82a5..a3d6bad 100644
>> --- a/kernel/trace/trace_events.c
>> +++ b/kernel/trace/trace_events.c
>> @@ -1055,6 +1055,9 @@ static void remove_subsystem_dir(const char *name)
>>  	}
>>  }
>>  
>> +/*
>> + * Must be called under locking both of event_mutex and trace_event_mutex.
>> + */
>>  static void __trace_remove_event_call(struct ftrace_event_call *call)
>>  {
>>  	ftrace_event_enable_disable(call, 0);
>> @@ -1071,7 +1074,9 @@ static void __trace_remove_event_call(struct ftrace_event_call *call)
>>  void trace_remove_event_call(struct ftrace_event_call *call)
> 
> Is this from a previous patch set, because I can't find this in either
> my tree or tip/master.

Right, this bug is from my patch:
tracing: Ftrace dynamic ftrace_event_call support

Thanks,

-- 
Masami Hiramatsu

Software Engineer
Hitachi Computer Products (America), Inc.
Software Solutions Division

e-mail: mhiramat@redhat.com