linux-kernel - Re: [PATCH 3/9] perf, tools, stat: Abstract stat metrics printing

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Message-ID: <20151104084248.GF29671@krava.brq.redhat.com>
Date:	Wed, 4 Nov 2015 09:42:48 +0100
From:	Jiri Olsa <jolsa@...hat.com>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	jolsa@...nel.org, acme@...nel.org, mingo@...nel.org,
	linux-kernel@...r.kernel.org, Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH 3/9] perf, tools, stat: Abstract stat metrics printing

On Mon, Nov 02, 2015 at 05:50:22PM -0800, Andi Kleen wrote:

SNIP

>  		evsel->attr.type == PERF_TYPE_HW_CACHE &&
>  		evsel->attr.config ==  ( PERF_COUNT_HW_CACHE_L1D |
>  					((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
> -					((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
> -			runtime_l1_dcache_stats[ctx][cpu].n != 0) {
> -		print_l1_dcache_misses(out, cpu, evsel, avg);
> +					 ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) {
> +		if (runtime_l1_dcache_stats[ctx][cpu].n != 0)
> +			print_l1_dcache_misses(cpu, evsel, avg, out);
> +		else
> +			print_metric(ctxp, NULL, NULL, "of all L1-dcache hits", 0);

hum, what's the reason for all those else cases
ending up printing nothing?

we have one metric per line anyway right?

jirka
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