as there was no proposed solution that helped me in response to the same
post by Andrew Steets, I would like to know if it is possible to
disable/enable perf event counters from the source code?
calling prctl(PR_TASK_PERF_EVENTS_DISABLE) has no effect, nor does
compiling with -fno-omit-frame-pointer option.
It would be extremely useful to disable perf event counters for some
parts of code and re-enable them for other parts of code, like:
prctl(PR_TASK_PERF_EVENTS_DISABLE);
// not important for performance analysis code
prctl(PR_TASK_PERF_EVENTS_ENABLE);
// code that needs to be analysed
and then, run perf:
$ perf record ./program
$ perf report
Can anyone tell me how can I enable such functionality?
Thank you
--Oleg
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