linux-kernel - Re: [RFC/PATCH 01/38] perf tools: Use a software dummy event to track task/mmap events

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Date:	Mon, 5 Oct 2015 14:51:37 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	Namhyung Kim <namhyung@...nel.org>
Cc:	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	LKML <linux-kernel@...r.kernel.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Stephane Eranian <eranian@...gle.com>,
	David Ahern <dsahern@...il.com>,
	Andi Kleen <andi@...stfloor.org>,
	Adrian Hunter <adrian.hunter@...el.com>
Subject: Re: [RFC/PATCH 01/38] perf tools: Use a software dummy event to
 track task/mmap events

On Fri, Oct 02, 2015 at 02:18:42PM +0900, Namhyung Kim wrote:

SNIP

>  
> +/**
> + * perf_evsel__is_dummy_tracking - Return whether given evsel is a dummy
> + * event for tracking meta events only
> + *
> + * @evsel - evsel selector to be tested
> + *
> + * Return %true if event is a dummy tracking event
> + */
> +static inline bool perf_evsel__is_dummy_tracking(struct perf_evsel *evsel)
> +{
> +	return evsel->attr.type == PERF_TYPE_SOFTWARE &&
> +		evsel->attr.config == PERF_COUNT_SW_DUMMY &&
> +		evsel->attr.task == 1 && evsel->attr.mmap == 1;

should this use now check for evsel->tracking ?

jirka
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