On Wed, 9 Mar 2016 21:46:41 +0100 Jiri Olsa <[email protected]> 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
