Re: [PATCH 0/9] perf: Adding better precise_ip field handling

From: Ingo Molnar
Date: Sun Jan 27 2013 - 07:41:26 EST



* Jiri Olsa <jolsa@xxxxxxxxxx> wrote:

> hi,
> adding sysfs attribute to specify the maximum allowed value
> for perf_event_attr::precise_ip field.
>
> Adding functionality for simple 'precise' term to get the
> maximum allowed value for perf_event_attr::precise_ip field.
>
> And finally adding several precise automated tests.

Ok - could we please as a next step turn on cycles:pp as the
default in all the profiling tools (perf record, perf top),
transparently? I.e. if the CPU supports it then use it, if not
then don't complain, just use the highest grade profiling method
available.

Thanks,

Ingo
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