linux-kernel - Re: [PATCH 3/6] perf, tools, stat: Support metrics in --per-core/socket mode

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Date:	Sun, 21 Feb 2016 18:18:45 +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,
	eranian@...gle.com, Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH 3/6] perf, tools, stat: Support metrics in
 --per-core/socket mode

On Wed, Feb 17, 2016 at 02:44:02PM -0800, Andi Kleen wrote:

SNIP

>  
>  	perf_stat__print_shadow_stats(counter, uval,
>  				stat_config.aggr_mode == AGGR_GLOBAL ? 0 :
> -				cpu_map__id_to_cpu(id),
> +				first_shadow_cpu(counter, id),
>  				&out);
> -
>  	if (!csv_output) {
>  		print_noise(counter, noise);
>  		print_running(run, ena);
>  	}
>  }
>  
> +static void aggr_update_shadow(void)
> +{
> +	int cpu, cpu2, s2, id, s;
> +	u64 val;
> +	struct perf_evsel *counter;
> +
> +	for (s = 0; s < aggr_map->nr; s++) {
> +		id = aggr_map->map[s];
> +		evlist__for_each(evsel_list, counter) {
> +			val = 0;
> +			for (cpu = 0; cpu < perf_evsel__nr_cpus(counter); cpu++) {
> +				cpu2 = perf_evsel__cpus(counter)->map[cpu];
> +				s2 = aggr_get_id(evsel_list->cpus, cpu2);

I think you need to pass cpu's 'idx' into aggr_get_id,
because it will do evsel_list->cpus[cpu2] for you

jirka