linux-kernel - Re: [PATCH 4/9] perf/x86: special case per-cpu core misc PMU events

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Message-ID: <20150717125549.GJ19282@twins.programming.kicks-ass.net>
Date:	Fri, 17 Jul 2015 14:55:49 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Mark Rutland <mark.rutland@....com>
Cc:	"kan.liang@...el.com" <kan.liang@...el.com>,
	"mingo@...hat.com" <mingo@...hat.com>,
	"acme@...nel.org" <acme@...nel.org>,
	"eranian@...gle.com" <eranian@...gle.com>,
	"ak@...ux.intel.com" <ak@...ux.intel.com>,
	"adrian.hunter@...el.com" <adrian.hunter@...el.com>,
	"dsahern@...il.com" <dsahern@...il.com>,
	"jolsa@...nel.org" <jolsa@...nel.org>,
	"namhyung@...nel.org" <namhyung@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 4/9] perf/x86: special case per-cpu core misc PMU events

On Fri, Jul 17, 2015 at 01:21:06PM +0100, Mark Rutland wrote:
> 
> As with my earlier comments, I don't think these can be grouped with
> events (not even from the same PMU given their free-running nature).
> 
> They're CPU-affine, so you can associate them with work done on that
> CPU.

Just record the deltas from them while you're on. 
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