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=-12.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_PASS 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 A6BCAC43381 for ; Fri, 22 Mar 2019 22:01:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 719542190A for ; Fri, 22 Mar 2019 22:01:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727967AbfCVWB0 (ORCPT ); Fri, 22 Mar 2019 18:01:26 -0400 Received: from terminus.zytor.com ([198.137.202.136]:37535 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727619AbfCVWBZ (ORCPT ); Fri, 22 Mar 2019 18:01:25 -0400 Received: from terminus.zytor.com (localhost [127.0.0.1]) by terminus.zytor.com (8.15.2/8.15.2) with ESMTPS id x2MM1HfC745296 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Fri, 22 Mar 2019 15:01:17 -0700 Received: (from tipbot@localhost) by terminus.zytor.com (8.15.2/8.15.2/Submit) id x2MM1Hhv745293; Fri, 22 Mar 2019 15:01:17 -0700 Date: Fri, 22 Mar 2019 15:01:17 -0700 X-Authentication-Warning: terminus.zytor.com: tipbot set sender to tipbot@zytor.com using -f From: tip-bot for Andi Kleen Message-ID: Cc: tglx@linutronix.de, linux-kernel@vger.kernel.org, jolsa@kernel.org, namhyung@kernel.org, ak@linux.intel.com, acme@redhat.com, hpa@zytor.com, mingo@kernel.org Reply-To: namhyung@kernel.org, ak@linux.intel.com, acme@redhat.com, hpa@zytor.com, mingo@kernel.org, linux-kernel@vger.kernel.org, tglx@linutronix.de, jolsa@kernel.org In-Reply-To: <20190305144758.12397-6-andi@firstfloor.org> References: <20190305144758.12397-6-andi@firstfloor.org> To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/urgent] perf report: Parse time quantum Git-Commit-ID: 2a1292cbd4e5c81edbf815a410fa2072c341db1e X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 2a1292cbd4e5c81edbf815a410fa2072c341db1e Gitweb: https://git.kernel.org/tip/2a1292cbd4e5c81edbf815a410fa2072c341db1e Author: Andi Kleen AuthorDate: Tue, 5 Mar 2019 06:47:48 -0800 Committer: Arnaldo Carvalho de Melo CommitDate: Mon, 11 Mar 2019 11:56:03 -0300 perf report: Parse time quantum Many workloads change over time. 'perf report' currently aggregates the whole time range reported in perf.data. This patch adds an option for a time quantum to quantisize the perf.data over time. This just adds the option, will be used in follow on patches for a time sort key. Signed-off-by: Andi Kleen Cc: Jiri Olsa Cc: Namhyung Kim Link: http://lkml.kernel.org/r/20190305144758.12397-6-andi@firstfloor.org [ Use NSEC_PER_[MU]SEC ] Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/perf-report.txt | 4 +++ tools/perf/builtin-report.c | 42 ++++++++++++++++++++++++++++++++ tools/perf/util/symbol.c | 2 ++ tools/perf/util/symbol_conf.h | 1 + 4 files changed, 49 insertions(+) diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt index 51dbc519dbce..9ec1702bccdd 100644 --- a/tools/perf/Documentation/perf-report.txt +++ b/tools/perf/Documentation/perf-report.txt @@ -497,6 +497,10 @@ include::itrace.txt[] The period/hits keywords set the base the percentage is computed on - the samples period or the number of samples (hits). +--time-quantum:: + Configure time quantum for time sort key. Default 100ms. + Accepts s, us, ms, ns units. + include::callchain-overhead-calculation.txt[] SEE ALSO diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 515864ba504a..05c8dd41106c 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -47,9 +47,11 @@ #include #include #include +#include "sane_ctype.h" #include #include #include +#include #include #include #include @@ -926,6 +928,43 @@ report_parse_callchain_opt(const struct option *opt, const char *arg, int unset) return parse_callchain_report_opt(arg); } +static int +parse_time_quantum(const struct option *opt, const char *arg, + int unset __maybe_unused) +{ + unsigned long *time_q = opt->value; + char *end; + + *time_q = strtoul(arg, &end, 0); + if (end == arg) + goto parse_err; + if (*time_q == 0) { + pr_err("time quantum cannot be 0"); + return -1; + } + while (isspace(*end)) + end++; + if (*end == 0) + return 0; + if (!strcmp(end, "s")) { + *time_q *= NSEC_PER_SEC; + return 0; + } + if (!strcmp(end, "ms")) { + *time_q *= NSEC_PER_MSEC; + return 0; + } + if (!strcmp(end, "us")) { + *time_q *= NSEC_PER_USEC; + return 0; + } + if (!strcmp(end, "ns")) + return 0; +parse_err: + pr_err("Cannot parse time quantum `%s'\n", arg); + return -1; +} + int report_parse_ignore_callees_opt(const struct option *opt __maybe_unused, const char *arg, int unset __maybe_unused) @@ -1148,6 +1187,9 @@ int cmd_report(int argc, const char **argv) "Set percent type local/global-period/hits", annotate_parse_percent_type), OPT_BOOLEAN(0, "ns", &symbol_conf.nanosecs, "Show times in nanosecs"), + OPT_CALLBACK(0, "time-quantum", &symbol_conf.time_quantum, "time (ms|us|ns|s)", + "Set time quantum for time sort key (default 100ms)", + parse_time_quantum), OPT_END() }; struct perf_data data = { diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index eb873ea1c405..6b73a0eeb6a1 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -6,6 +6,7 @@ #include #include #include +#include #include #include #include @@ -45,6 +46,7 @@ struct symbol_conf symbol_conf = { .demangle = true, .demangle_kernel = false, .cumulate_callchain = true, + .time_quantum = 100 * NSEC_PER_MSEC, /* 100ms */ .show_hist_headers = true, .symfs = "", .event_group = true, diff --git a/tools/perf/util/symbol_conf.h b/tools/perf/util/symbol_conf.h index 095a297c8b47..a5684a71b78e 100644 --- a/tools/perf/util/symbol_conf.h +++ b/tools/perf/util/symbol_conf.h @@ -56,6 +56,7 @@ struct symbol_conf { *sym_list_str, *col_width_list_str, *bt_stop_list_str; + unsigned long time_quantum; struct strlist *dso_list, *comm_list, *sym_list,