Messages in this thread | | | Date | Tue, 15 Mar 2016 16:06:46 -0400 | From | Steven Rostedt <> | Subject | Re: [PATCH 1/5] ftrace perf: Check sample types only for sampling events |
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On Wed, 9 Mar 2016 21:46:41 +0100 Jiri Olsa <jolsa@kernel.org> wrote:
> Currently we check sample type for ftrace:function event > even if it's not created as sampling event. That prevents > creating ftrace_function event in counting mode. > > Making sure we check sample types only for sampling events. > > Before: > $ sudo perf stat -e ftrace:function ls > ... > > Performance counter stats for 'ls': > > <not supported> ftrace:function > > 0.001983662 seconds time elapsed > > After: > $ sudo perf stat -e ftrace:function ls
I'm assuming you gave yourself admin capabilities, and not any normal user may sample function tracing, right?
-- Steve
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