On Wed, 24 Apr 2013 16:09:18 +0200, Jiri Olsa wrote:
> On Tue, Apr 23, 2013 at 05:31:03PM +0900, Namhyung Kim wrote:
>> From: Namhyung Kim <namhyung....@lge.com>
>> +out:
>> + put_tracing_file(file);
>> + return ret;
>> +}
>> +
>> +static int reset_tracing_files(struct perf_ftrace *ftrace __maybe_unused)
>> +{
>> + if (write_tracing_file("tracing_on", "0") < 0)
>> + return -1;
>> +
>> + if (write_tracing_file("current_tracer", "nop") < 0)
>> + return -1;
>> +
>> + if (write_tracing_file("set_ftrace_pid", " ") < 0)
>> + return -1;
>
> I think we want to reset set_ftrace_pid file as well
> probably to -1..
>
> if I'm tracing command with this file having wrong CPU(s)
> I dont get any data..
Not sure I understood what you mean exactly.
Do you mean it should be changed to
if (write_tracing_file("set_ftrace_pid", "-1") < 0)
? It seems it's the right thing to do for compatibility.
Thanks,
Namhyung
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