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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D8CBAC433EF for ; Mon, 25 Jul 2022 18:31:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236423AbiGYSbs (ORCPT ); Mon, 25 Jul 2022 14:31:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44956 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236042AbiGYSbi (ORCPT ); Mon, 25 Jul 2022 14:31:38 -0400 Received: from mail-pl1-x629.google.com (mail-pl1-x629.google.com [IPv6:2607:f8b0:4864:20::629]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 02BDC1F603; Mon, 25 Jul 2022 11:31:35 -0700 (PDT) Received: by mail-pl1-x629.google.com with SMTP id d3so3308151pls.4; Mon, 25 Jul 2022 11:31:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=8JEJHCLbm9FaoQqQc3eYhH6ECpaTcGd/ZHTn5iTyFnE=; b=QxQ2mw6eAwh/HwShZr7aNJe8815zquepBSuCxSvmLwAY3A4t1M3gNVPMoUz+ftfGwy tD1U+Br9F29yQrOZVUp2BF6lqNVFDYWOKjD8YaoZv6cPIL9YhIURqy9yKV6yZK6HEDw+ 7T80zZgEVB2K/xW/RixITGAaS1zr1qbvdvvNWpskpDQivkE/BmrK08xFslaorhLoPh2B NBduWMIUyZTh1zz86FHIV943Lu4P3shUCVsq5hIfYCzzVb08eJfp7m4Blmk4DITzWmRI SC0CH30qGHKU88VhZ35BjuGgQ1y6l5pQgMn4+GMagyYazaq3wOUz1Zg7SqmghjQbmRUc IGGA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-transfer-encoding; bh=8JEJHCLbm9FaoQqQc3eYhH6ECpaTcGd/ZHTn5iTyFnE=; b=cSWQQlQmBV151taQ3ZdZjtRkujFrU4/pYgEhvLeDInkHluI1TG7LLgdyUIOgOIi5iO ND3Bc2VAn5qALNVvfGKnmDDjQq4oYeVpIF0ON6QAToYy35DSKqKILZrDqJByKcqnWsTJ R+9CHLq3QedQ64A3+6rBPBltN34pVVBNmavKihxP0LndU96PHD5ffxANjpRWq+60ITDM ixPVtkUFwHjoZkAUWoNc35KFwP6zym7QgCjHNo4rU1waNfWEAs6euyz1AQzM83TUgRyq LUqcGXSHlxZ6ACjzkLeqR/YYYwswLpugTDc3S3V5YTRYp9SSMRyzb540TYVUVNsMFzp9 cv9w== X-Gm-Message-State: AJIora9PiJd+6etAtgHGIBuZ9i2epMIIBV2KXG//rbXWzCYVIaDBIahQ a16X16gR7lpCMiqcqRpBNF0= X-Google-Smtp-Source: AGRyM1uRqKPKR1yNB/cQKqza6gj0fWAzLCl4qBI5fzjdU2/Mf5K0J2RoaYH29+HM/MqhzvOVxd6DAQ== X-Received: by 2002:a17:902:a586:b0:16b:e787:53f8 with SMTP id az6-20020a170902a58600b0016be78753f8mr13392534plb.163.1658773894352; Mon, 25 Jul 2022 11:31:34 -0700 (PDT) Received: from balhae.hsd1.ca.comcast.net ([2601:647:6780:1010:2c4d:e9cd:d086:4d46]) by smtp.gmail.com with ESMTPSA id c17-20020a170903235100b0016be9d498d0sm9740556plh.211.2022.07.25.11.31.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 25 Jul 2022 11:31:33 -0700 (PDT) Sender: Namhyung Kim From: Namhyung Kim To: Arnaldo Carvalho de Melo , Jiri Olsa Cc: Ingo Molnar , Peter Zijlstra , LKML , Ian Rogers , linux-perf-users@vger.kernel.org, Will Deacon , Waiman Long , Boqun Feng , Davidlohr Bueso Subject: [PATCH 5/5] perf lock: Support -t option for 'contention' subcommand Date: Mon, 25 Jul 2022 11:31:24 -0700 Message-Id: <20220725183124.368304-6-namhyung@kernel.org> X-Mailer: git-send-email 2.37.1.359.gd136c6c3e2-goog In-Reply-To: <20220725183124.368304-1-namhyung@kernel.org> References: <20220725183124.368304-1-namhyung@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Like perf lock report, it can report lock contention stat of each task. $ perf lock contention -t contended total wait max wait avg wait pid comm 5 945.20 us 902.08 us 189.04 us 316167 EventManager_De 33 98.17 us 6.78 us 2.97 us 766063 kworker/0:1-get 7 92.47 us 61.26 us 13.21 us 316170 EventManager_De 14 76.31 us 12.87 us 5.45 us 12949 timedcall 24 76.15 us 12.27 us 3.17 us 767992 sched-pipe 15 75.62 us 11.93 us 5.04 us 15127 switchto-defaul 24 71.84 us 5.59 us 2.99 us 629168 kworker/u513:2- 17 67.41 us 7.94 us 3.96 us 13504 coroner- 1 59.56 us 59.56 us 59.56 us 316165 EventManager_De 14 56.21 us 6.89 us 4.01 us 0 swapper Signed-off-by: Namhyung Kim --- tools/perf/Documentation/perf-lock.txt | 4 ++++ tools/perf/builtin-lock.c | 22 ++++++++++++++++++++-- 2 files changed, 24 insertions(+), 2 deletions(-) diff --git a/tools/perf/Documentation/perf-lock.txt b/tools/perf/Documentation/perf-lock.txt index ae78e04346bd..8f4e34f924d5 100644 --- a/tools/perf/Documentation/perf-lock.txt +++ b/tools/perf/Documentation/perf-lock.txt @@ -119,6 +119,10 @@ CONTENTION OPTIONS and users can customize that using this. Possible values: contended, wait_total, wait_max, wait_min, avg_wait. +-t:: +--threads:: + Show per-thread lock contention stat + SEE ALSO -------- diff --git a/tools/perf/builtin-lock.c b/tools/perf/builtin-lock.c index ad3b191db2e7..041801d8b6ac 100644 --- a/tools/perf/builtin-lock.c +++ b/tools/perf/builtin-lock.c @@ -1560,7 +1560,10 @@ static void print_contention_result(void) list_for_each_entry(key, &lock_keys, list) pr_info("%*s ", key->len, key->header); - pr_info(" %10s %s\n\n", "type", "caller"); + if (show_thread_stats) + pr_info(" %10s %s\n\n", "pid", "comm"); + else + pr_info(" %10s %s\n\n", "type", "caller"); bad = total = 0; while ((st = pop_from_result())) { @@ -1573,6 +1576,16 @@ static void print_contention_result(void) pr_info(" "); } + if (show_thread_stats) { + struct thread *t; + int pid = st->addr; + + /* st->addr contains tid of thread */ + t = perf_session__findnew(session, pid); + pr_info(" %10d %s\n", pid, thread__comm_str(t)); + continue; + } + pr_info(" %10s %s\n", get_type_str(st), st->name); } @@ -1703,7 +1716,10 @@ static int __cmd_contention(void) if (select_key(true)) goto out_delete; - aggr_mode = LOCK_AGGR_CALLER; + if (show_thread_stats) + aggr_mode = LOCK_AGGR_TASK; + else + aggr_mode = LOCK_AGGR_CALLER; err = perf_session__process_events(session); if (err) @@ -1843,6 +1859,8 @@ int cmd_lock(int argc, const char **argv) "key for sorting (contended / wait_total / wait_max / wait_min / avg_wait)"), OPT_STRING('F', "field", &output_fields, "contended,wait_total,wait_max,avg_wait", "output fields (contended / wait_total / wait_max / wait_min / avg_wait)"), + OPT_BOOLEAN('t', "threads", &show_thread_stats, + "show per-thread lock stats"), OPT_PARENT(lock_options) }; -- 2.37.1.359.gd136c6c3e2-goog