From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751752AbdHaTlQ (ORCPT ); Thu, 31 Aug 2017 15:41:16 -0400 Received: from mga01.intel.com ([192.55.52.88]:41142 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751496AbdHaTku (ORCPT ); Thu, 31 Aug 2017 15:40:50 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.41,454,1498546800"; d="scan'208";a="124479702" From: Andi Kleen To: acme@kernel.org Cc: jolsa@kernel.org, linux-kernel@vger.kernel.org, Andi Kleen Subject: [PATCH v3 09/11] perf, tools, stat: Support duration_time for metrics Date: Thu, 31 Aug 2017 12:40:34 -0700 Message-Id: <20170831194036.30146-10-andi@firstfloor.org> X-Mailer: git-send-email 2.9.5 In-Reply-To: <20170831194036.30146-1-andi@firstfloor.org> References: <20170831194036.30146-1-andi@firstfloor.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Andi Kleen Some of the metrics formulas (like GFLOPs) need to know how long the measurement period is. Support an internal event called duration_time, which reports time in second. It maps to the dummy event, but is special cased for statistics to report the walltime duration. So far it is not printed, but only used internally for metrics. Signed-off-by: Andi Kleen --- tools/perf/util/parse-events.l | 1 + tools/perf/util/stat-shadow.c | 17 +++++++++++++---- 2 files changed, 14 insertions(+), 4 deletions(-) diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l index fdb5bb52f01f..ea2426daf7e8 100644 --- a/tools/perf/util/parse-events.l +++ b/tools/perf/util/parse-events.l @@ -288,6 +288,7 @@ cpu-migrations|migrations { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COU alignment-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_ALIGNMENT_FAULTS); } emulation-faults { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_EMULATION_FAULTS); } dummy { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_DUMMY); } +duration_time { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_DUMMY); } bpf-output { return sym(yyscanner, PERF_TYPE_SOFTWARE, PERF_COUNT_SW_BPF_OUTPUT); } /* diff --git a/tools/perf/util/stat-shadow.c b/tools/perf/util/stat-shadow.c index 664f49a9b012..a2c12d1ef32a 100644 --- a/tools/perf/util/stat-shadow.c +++ b/tools/perf/util/stat-shadow.c @@ -641,11 +641,20 @@ static void generic_metric(const char *metric_expr, expr__add_id(&pctx, name, avg); for (i = 0; metric_events[i]; i++) { struct saved_value *v; + struct stats *stats; + double scale; - v = saved_value_lookup(metric_events[i], cpu, false); - if (!v) - break; - expr__add_id(&pctx, metric_events[i]->name, avg_stats(&v->stats)); + if (!strcmp(metric_events[i]->name, "duration_time")) { + stats = &walltime_nsecs_stats; + scale = 1e-9; + } else { + v = saved_value_lookup(metric_events[i], cpu, false); + if (!v) + break; + stats = &v->stats; + scale = 1.0; + } + expr__add_id(&pctx, metric_events[i]->name, avg_stats(stats)*scale); } if (!metric_events[i]) { const char *p = metric_expr; -- 2.9.5