From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AD988C43441 for ; Thu, 22 Nov 2018 03:58:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6B72F20831 for ; Thu, 22 Nov 2018 03:58:17 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6B72F20831 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387737AbeKVOfo (ORCPT ); Thu, 22 Nov 2018 09:35:44 -0500 Received: from mx1.redhat.com ([209.132.183.28]:33736 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732535AbeKVOfo (ORCPT ); Thu, 22 Nov 2018 09:35:44 -0500 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id B2A7F394D52; Thu, 22 Nov 2018 03:58:14 +0000 (UTC) Received: from sandy.ghostprotocols.net (ovpn-112-2.gru2.redhat.com [10.97.112.2]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 5C78919741; Thu, 22 Nov 2018 03:58:14 +0000 (UTC) Received: by sandy.ghostprotocols.net (Postfix, from userid 1000) id DA6571C24; Thu, 22 Nov 2018 01:58:11 -0200 (BRST) Date: Thu, 22 Nov 2018 01:58:11 -0200 From: Arnaldo Carvalho de Melo To: Stephane Eranian Cc: linux-kernel@vger.kernel.org, peterz@infradead.org, mingo@elte.hu, jolsa@redhat.com, acme@kernel.org Subject: Re: [PATCH] perf stat: fix csv mode column output for non-cgroup events Message-ID: <20181122035811.GD5468@redhat.com> References: <1541587845-9150-1-git-send-email-eranian@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1541587845-9150-1-git-send-email-eranian@google.com> X-Url: http://acmel.wordpress.com User-Agent: Mutt/1.5.20 (2009-12-10) X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.38]); Thu, 22 Nov 2018 03:58:15 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Em Wed, Nov 07, 2018 at 02:50:45AM -0800, Stephane Eranian escreveu: > When using the -x option, perf stat prints csv-style output > with one event per line. For each event, it prints the count, > the unit, the event name, the cgroup, and a bunch of other event > specific fields (such as insn per cycles). > > When you use csv-style mode, you expect a normalized output where > each event is printed with the same number of fields regardless of > what it is so it can easily be imported into a spreadsheet or parsed. > For instance, if an event does not have a unit, then print an empty field > for it. Although this approach was implemented for the unit, it was not > for the cgroup. When mixing cgroup and non-cgroup events, then non-cgroup > events would not show an empty field, instead the next field was printed, > make columns not line up correctly. > > This patch fixes the cgroup output issues by forcing an empty field > for non-cgroup events as soon as one event has cgroup. Looks sane, that nr_cgroups global variable at some point has to go to the evlist, but that is not introduced by this patch, Jiri, are you ok with it as well? - Arnaldo > Before: > @ @cycles @foo @ 0 @100.00@@ > 2531614 @ @cycles @6420922@100.00@ @ > > foo cgroup lines up with time_running! > > After: > @ @cycles @foo @0 @100.00@@ > 2594834 @ @cycles @ @5287372 @100.00@@ > > Fields line up. > > Signed-off-by: Stephane Eranian > --- > tools/perf/util/stat-display.c | 16 +++++++++++----- > 1 file changed, 11 insertions(+), 5 deletions(-) > > diff --git a/tools/perf/util/stat-display.c b/tools/perf/util/stat-display.c > index e7b4c44ebb62..665ee374fc01 100644 > --- a/tools/perf/util/stat-display.c > +++ b/tools/perf/util/stat-display.c > @@ -59,6 +59,15 @@ static void print_noise(struct perf_stat_config *config, > print_noise_pct(config, stddev_stats(&ps->res_stats[0]), avg); > } > > +static void print_cgroup(struct perf_stat_config *config, struct perf_evsel *evsel) > +{ > + if (nr_cgroups) { > + const char *cgrp_name = evsel->cgrp ? evsel->cgrp->name : ""; > + fprintf(config->output, "%s%s", config->csv_sep, cgrp_name); > + } > +} > + > + > static void aggr_printout(struct perf_stat_config *config, > struct perf_evsel *evsel, int id, int nr) > { > @@ -336,8 +345,7 @@ static void abs_printout(struct perf_stat_config *config, > > fprintf(output, "%-*s", config->csv_output ? 0 : 25, perf_evsel__name(evsel)); > > - if (evsel->cgrp) > - fprintf(output, "%s%s", config->csv_sep, evsel->cgrp->name); > + print_cgroup(config, evsel); > } > > static bool is_mixed_hw_group(struct perf_evsel *counter) > @@ -431,9 +439,7 @@ static void printout(struct perf_stat_config *config, int id, int nr, > config->csv_output ? 0 : -25, > perf_evsel__name(counter)); > > - if (counter->cgrp) > - fprintf(config->output, "%s%s", > - config->csv_sep, counter->cgrp->name); > + print_cgroup(config, counter); > > if (!config->csv_output) > pm(config, &os, NULL, NULL, "", 0); > -- > 2.7.4