Re: [PATCH v3 4/4] perf,x86: add RAPL hrtimer support

2013-10-28 Thread Stephane Eranian
On Sat, Oct 26, 2013 at 7:53 PM, Jiri Olsa wrote: > On Sat, Oct 26, 2013 at 07:07:06PM +0200, Stephane Eranian wrote: >> On Fri, Oct 25, 2013 at 7:44 PM, Jiri Olsa wrote: >> > On Wed, Oct 23, 2013 at 02:58:05PM +0200, Stephane Eranian wrote: > > SNIP > >> >> + list_for_each_entry(event, &pmu-

Re: [PATCH v3 4/4] perf,x86: add RAPL hrtimer support

2013-10-26 Thread Jiri Olsa
On Sat, Oct 26, 2013 at 07:07:06PM +0200, Stephane Eranian wrote: > On Fri, Oct 25, 2013 at 7:44 PM, Jiri Olsa wrote: > > On Wed, Oct 23, 2013 at 02:58:05PM +0200, Stephane Eranian wrote: SNIP > >> + list_for_each_entry(event, &pmu->active_list, active_entry) { > >> + rapl_event_

Re: [PATCH v3 4/4] perf,x86: add RAPL hrtimer support

2013-10-26 Thread Stephane Eranian
On Fri, Oct 25, 2013 at 7:44 PM, Jiri Olsa wrote: > On Wed, Oct 23, 2013 at 02:58:05PM +0200, Stephane Eranian wrote: >> The RAPL PMU counters do not interrupt on overflow. >> Therefore, the kernel needs to poll the counters >> to avoid missing an overflow. This patch adds >> the hrtimer code to d

Re: [PATCH v3 4/4] perf,x86: add RAPL hrtimer support

2013-10-25 Thread Jiri Olsa
On Wed, Oct 23, 2013 at 02:58:05PM +0200, Stephane Eranian wrote: > The RAPL PMU counters do not interrupt on overflow. > Therefore, the kernel needs to poll the counters > to avoid missing an overflow. This patch adds > the hrtimer code to do this. > > The timer internval is calculated at boot ti