linux-kernel - Re: [PATCH 01/13] perf, tools, stat: Factor out callback for collecting event values

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Message-ID: <20170314145643.GA28151@krava>
Date:   Tue, 14 Mar 2017 15:56:43 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     Andi Kleen <andi@...stfloor.org>
Cc:     acme@...nel.org, jolsa@...nel.org, linux-kernel@...r.kernel.org,
        Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH 01/13] perf, tools, stat: Factor out callback for
 collecting event values

On Fri, Mar 10, 2017 at 01:24:34PM -0800, Andi Kleen wrote:

SNIP

> +
> +struct aggr_data {
> +	u64 ena, run, val;
> +	int id;
> +	int nr;
> +	int cpu;
> +};
> +
> +static void aggr_cb(struct perf_evsel *counter, void *data, bool first)
> +{
> +	struct aggr_data *ad = data;
> +	int cpu, s2;
> +
> +	for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
> +		struct perf_counts_values *counts;
> +
> +		s2 = aggr_get_id(evsel_list->cpus, cpu);

why do use evsel_list instead of perf_evsel__cpus(counter),
which is in the original/removed code?

this patch is about adding collect_data.. if you want to
choose this part, please make it clear in separate patch

thanks,
jirka