Re: [RFC][PATCH] perf: Implement read_group() PMU operation

2015-02-22 Thread Cody P Schafer
On Thu, Feb 5, 2015 at 9:59 PM, Sukadev Bhattiprolu wrote: > From: Sukadev Bhattiprolu > Date: Thu Feb 5 20:56:20 EST 2015 -0300 > Subject: [RFC][PATCH] perf: Implement read_group() PMU operation > > This is a lightly tested, exploratory patch to allow PMUs to return > severa

Re: [RFC][PATCH] perf: Implement read_group() PMU operation

2015-02-17 Thread Peter Zijlstra
On Tue, Feb 17, 2015 at 12:33:12AM -0800, Sukadev Bhattiprolu wrote: > Peter Zijlstra [pet...@infradead.org] wrote: > | > --- a/kernel/events/core.c > | > +++ b/kernel/events/core.c > | > @@ -3549,10 +3549,43 @@ static int perf_event_read_group(struct > perf_event *event, > | > | You also want pe

Re: [RFC][PATCH] perf: Implement read_group() PMU operation

2015-02-17 Thread Sukadev Bhattiprolu
Peter Zijlstra [pet...@infradead.org] wrote: | > --- a/kernel/events/core.c | > +++ b/kernel/events/core.c | > @@ -3549,10 +3549,43 @@ static int perf_event_read_group(struct perf_event *event, | | You also want perf_output_read_group(). Ok. Will look into it. We currently don't support sampling

Re: [RFC][PATCH] perf: Implement read_group() PMU operation

2015-02-12 Thread Peter Zijlstra
On Thu, Feb 05, 2015 at 06:59:15PM -0800, Sukadev Bhattiprolu wrote: > From: Sukadev Bhattiprolu > Date: Thu Feb 5 20:56:20 EST 2015 -0300 > Subject: [RFC][PATCH] perf: Implement read_group() PMU operation > > This is a lightly tested, exploratory patch to allow PMUs to r

[RFC][PATCH] perf: Implement read_group() PMU operation

2015-02-05 Thread Sukadev Bhattiprolu
From: Sukadev Bhattiprolu Date: Thu Feb 5 20:56:20 EST 2015 -0300 Subject: [RFC][PATCH] perf: Implement read_group() PMU operation This is a lightly tested, exploratory patch to allow PMUs to return several counters at once. Appreciate any comments :-) Unlike normal hardware PMCs, the 24x7