lkml.org 
[lkml]   [2015]   [Aug]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRE: [PATCH V2 1/1] perf/x86: Add Intel power cstate PMUs support
Date

>
> On Thu, Aug 6, 2015 at 11:52 AM, Liang, Kan <kan.liang@intel.com> wrote:
> >
> >
> >> >> +static cpumask_t power_cstate_core_cpu_mask;
> >> >
> >> > That one typically does not need a cpumask.
> >> >
> >> You need to pick one CPU out of the multi-core. But it is for client
> >> parts thus there is only one socket. At least this is my understanding.
> >>
> >
> > CORE_C*_RESIDENCY are available for physical processor core.
> > So logical processor in same physical processor core share the same
> > counter.
> > I think we need the cpumask to identify the default logical processor
> > which do counting.
> >
> Did you restrict these events to system-wide mode only?
>

Yes
\
 
 \ /
  Last update: 2015-08-06 21:41    [W:0.151 / U:0.044 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site