Re: [PATCH V4 02/16] perf, core: introduce pmu context switch callback

2014-07-02 Thread Yan, Zheng
On 07/02/2014 06:12 PM, Peter Zijlstra wrote: > On Mon, Jun 30, 2014 at 04:50:39PM +0800, Yan, Zheng wrote: >> @@ -2362,6 +2363,58 @@ unlock: >> } >> } >> >> +void perf_sched_cb_disable(struct pmu *pmu) >> +{ >> +__get_cpu_var(perf_sched_cb_usages)--; >> +} >> + >> +void perf_sched_cb_e

Re: [PATCH V4 02/16] perf, core: introduce pmu context switch callback

2014-07-02 Thread Peter Zijlstra
On Mon, Jun 30, 2014 at 04:50:39PM +0800, Yan, Zheng wrote: > @@ -2362,6 +2363,58 @@ unlock: > } > } > > +void perf_sched_cb_disable(struct pmu *pmu) > +{ > + __get_cpu_var(perf_sched_cb_usages)--; > +} > + > +void perf_sched_cb_enable(struct pmu *pmu) > +{ > + __get_cpu_var(perf_s

Re: [PATCH V4 02/16] perf, core: introduce pmu context switch callback

2014-07-02 Thread Peter Zijlstra
On Mon, Jun 30, 2014 at 04:50:39PM +0800, Yan, Zheng wrote: > diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h > index 707617a..71fb77a 100644 > --- a/include/linux/perf_event.h > +++ b/include/linux/perf_event.h > @@ -262,6 +262,12 @@ struct pmu { >* flush branch stack