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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 D06BBC07E95 for ; Wed, 7 Jul 2021 05:58:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ACD3F61CC3 for ; Wed, 7 Jul 2021 05:58:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230274AbhGGGAv (ORCPT ); Wed, 7 Jul 2021 02:00:51 -0400 Received: from mga11.intel.com ([192.55.52.93]:58040 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230157AbhGGGAu (ORCPT ); Wed, 7 Jul 2021 02:00:50 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10037"; a="206231714" X-IronPort-AV: E=Sophos;i="5.83,331,1616482800"; d="scan'208";a="206231714" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jul 2021 22:58:10 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.83,331,1616482800"; d="scan'208";a="461240118" Received: from kbl-ppc.sh.intel.com ([10.239.159.163]) by fmsmga008.fm.intel.com with ESMTP; 06 Jul 2021 22:58:07 -0700 From: Jin Yao To: acme@kernel.org, jolsa@kernel.org, peterz@infradead.org, mingo@redhat.com, alexander.shishkin@linux.intel.com Cc: Linux-kernel@vger.kernel.org, ak@linux.intel.com, kan.liang@intel.com, yao.jin@intel.com, Jin Yao Subject: [PATCH v2] perf stat: Merge uncore events by default for hybrid platform Date: Wed, 7 Jul 2021 13:56:52 +0800 Message-Id: <20210707055652.962-1-yao.jin@linux.intel.com> X-Mailer: git-send-email 2.17.1 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On hybrid platform, by default stat aggregates and reports the event counts per pmu. For example, # perf stat -e cycles -a true Performance counter stats for 'system wide': 1,400,445 cpu_core/cycles/ 680,881 cpu_atom/cycles/ 0.001770773 seconds time elapsed While for uncore events, that's not a suitable method. Uncore has nothing to do with hybrid. So for uncore events, we aggregate event counts from all PMUs and report the counts without PMUs. Before: # perf stat -e arb/event=0x81,umask=0x1/,arb/event=0x84,umask=0x1/ -a true Performance counter stats for 'system wide': 2,058 uncore_arb_0/event=0x81,umask=0x1/ 2,028 uncore_arb_1/event=0x81,umask=0x1/ 0 uncore_arb_0/event=0x84,umask=0x1/ 0 uncore_arb_1/event=0x84,umask=0x1/ 0.000614498 seconds time elapsed After: # perf stat -e arb/event=0x81,umask=0x1/,arb/event=0x84,umask=0x1/ -a true Performance counter stats for 'system wide': 3,996 arb/event=0x81,umask=0x1/ 0 arb/event=0x84,umask=0x1/ 0.000630046 seconds time elapsed Of course, we also keep the '--no-merge' working for uncore events. # perf stat -e arb/event=0x81,umask=0x1/,arb/event=0x84,umask=0x1/ --no-merge true Performance counter stats for 'system wide': 1,952 uncore_arb_0/event=0x81,umask=0x1/ 1,921 uncore_arb_1/event=0x81,umask=0x1/ 0 uncore_arb_0/event=0x84,umask=0x1/ 0 uncore_arb_1/event=0x84,umask=0x1/ 0.000575536 seconds time elapsed Signed-off-by: Jin Yao --- v2: - Use evsel__find_pmu() to find uncore pmu. - Create hybrid_uniquify() to check if uniquify the event name for hybrid. tools/perf/builtin-stat.c | 3 --- tools/perf/util/stat-display.c | 14 +++++++++++++- 2 files changed, 13 insertions(+), 4 deletions(-) diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index f9f74a514315..b67a44982b61 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -2442,9 +2442,6 @@ int cmd_stat(int argc, const char **argv) evlist__check_cpu_maps(evsel_list); - if (perf_pmu__has_hybrid()) - stat_config.no_merge = true; - /* * Initialize thread_map with comm names, * so we could print it out on output. diff --git a/tools/perf/util/stat-display.c b/tools/perf/util/stat-display.c index c588a6b7a8db..87f77016b9cc 100644 --- a/tools/perf/util/stat-display.c +++ b/tools/perf/util/stat-display.c @@ -593,6 +593,18 @@ static void collect_all_aliases(struct perf_stat_config *config, struct evsel *c } } +static bool is_uncore(struct evsel *evsel) +{ + struct perf_pmu *pmu = evsel__find_pmu(evsel); + + return pmu && pmu->is_uncore; +} + +static bool hybrid_uniquify(struct evsel *evsel) +{ + return perf_pmu__has_hybrid() && !is_uncore(evsel); +} + static bool collect_data(struct perf_stat_config *config, struct evsel *counter, void (*cb)(struct perf_stat_config *config, struct evsel *counter, void *data, bool first), @@ -601,7 +613,7 @@ static bool collect_data(struct perf_stat_config *config, struct evsel *counter, if (counter->merged_stat) return false; cb(config, counter, data, true); - if (config->no_merge) + if (config->no_merge || hybrid_uniquify(counter)) uniquify_event_name(counter); else if (counter->auto_merge_stats) collect_all_aliases(config, counter, cb, data); -- 2.27.0