linux-kernel - Re: [PATCH 09/27] perf stat: Introduce perf

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Message-ID: <20150623211154.GC11231@kernel.org>
Date:	Tue, 23 Jun 2015 18:11:54 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Jiri Olsa <jolsa@...nel.org>
Cc:	lkml <linux-kernel@...r.kernel.org>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Andi Kleen <ak@...ux.intel.com>,
	David Ahern <dsahern@...il.com>,
	Ingo Molnar <mingo@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH 09/27] perf stat: Introduce perf_counts function

Em Tue, Jun 23, 2015 at 12:36:10AM +0200, Jiri Olsa escreveu:
> Introducing perf_counts function, that returns
> 'struct perf_counts_values' pointer for given cpu.
> -		evsel->counts->cpu[cpu] = *count;
> +		*perf_counts(evsel->counts, cpu) = *count;

For consistency, just like thread_map__set_pid(), please have a:

	perf_counts__set(evsel->counts, *cont);

In addition to its counterpart:

        perf_counts__value(evsel->counts, cpu);

Since you're not storing multiple entries per bucket, we need to use the
"value" idiom.

- Arnaldo
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