From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752861AbdLHF3d (ORCPT ); Fri, 8 Dec 2017 00:29:33 -0500 Received: from mga12.intel.com ([192.55.52.136]:43762 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752386AbdLHF2E (ORCPT ); Fri, 8 Dec 2017 00:28:04 -0500 X-Greylist: delayed 562 seconds by postgrey-1.27 at vger.kernel.org; Fri, 08 Dec 2017 00:28:00 EST X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.45,376,1508828400"; d="scan'208";a="156972886" 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 v7 5/6] perf report: support time percent and multiple time ranges Date: Fri, 8 Dec 2017 21:13:45 +0800 Message-Id: <1512738826-2628-6-git-send-email-yao.jin@linux.intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1512738826-2628-1-git-send-email-yao.jin@linux.intel.com> References: <1512738826-2628-1-git-send-email-yao.jin@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org perf report has a --time option to limit the time range of output. It only supports absolute time. Now this option is extended to support multiple time ranges and support the percent of time. For example: 1. Select the first and second 10% time slices perf report --time 10%/1,10%/2 2. Select from 0% to 10% and 30% to 40% slices perf report --time 0%-10%,30%-40% Change log: ----------- v6: Fix the merge issue with latest perf/core branch. No functional changes. v5: Add checking of first/last sample time to detect if it's recorded in perf.data. If it's not recorded, returns error message to user. v4: Remove perf_time__skip_sample, only uses perf_time__ranges_skip_sample v3: Since the definitions of first_sample_time/last_sample_time are moved from perf_session to perf_evlist so change the related code. Signed-off-by: Jin Yao --- tools/perf/Documentation/perf-report.txt | 16 ++++++++++++++++ tools/perf/builtin-report.c | 31 ++++++++++++++++++++++++++----- 2 files changed, 42 insertions(+), 5 deletions(-) diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt index ddde2b5..ed36553 100644 --- a/tools/perf/Documentation/perf-report.txt +++ b/tools/perf/Documentation/perf-report.txt @@ -402,6 +402,22 @@ OPTIONS stop time is not given (i.e, time string is 'x.y,') then analysis goes to end of file. + Also support time percent with multipe time range. Time string is + 'a%/n,b%/m,...' or 'a%-b%,c%-%d,...'. The maximum number of slices is 10. + + For example: + Select the second 10% time slice + perf report --time 10%/2 + + Select from 0% to 10% time slice + perf report --time 0%-10% + + Select the first and second 10% time slices + perf report --time 10%/1,10%/2 + + Select from 0% to 10% and 30% to 40% slices + perf report --time 0%-10%,30%-40% + --itrace:: Options for decoding instruction tracing data. The options are: diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index eb9ce63..946f146 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -52,6 +52,8 @@ #include #include +#define PTIME_RANGE_MAX 10 + struct report { struct perf_tool tool; struct perf_session *session; @@ -69,7 +71,8 @@ struct report { const char *cpu_list; const char *symbol_filter_str; const char *time_str; - struct perf_time_interval ptime; + struct perf_time_interval ptime_range[PTIME_RANGE_MAX]; + int range_num; float min_percent; u64 nr_entries; u64 queue_size; @@ -186,8 +189,10 @@ static int process_sample_event(struct perf_tool *tool, }; int ret = 0; - if (perf_time__skip_sample(&rep->ptime, sample->time)) + if (perf_time__ranges_skip_sample(rep->ptime_range, rep->range_num, + sample->time)) { return 0; + } if (machine__resolve(machine, &al, sample) < 0) { pr_debug("problem processing %d event, skipping it.\n", @@ -1077,9 +1082,25 @@ int cmd_report(int argc, const char **argv) if (symbol__init(&session->header.env) < 0) goto error; - if (perf_time__parse_str(&report.ptime, report.time_str) != 0) { - pr_err("Invalid time string\n"); - return -EINVAL; + if (perf_time__parse_str(report.ptime_range, report.time_str) != 0) { + if (session->evlist->first_sample_time == 0 && + session->evlist->last_sample_time == 0) { + pr_err("No first/last sample time in perf data\n"); + return -EINVAL; + } + + report.range_num = perf_time__percent_parse_str( + report.ptime_range, PTIME_RANGE_MAX, + report.time_str, + session->evlist->first_sample_time, + session->evlist->last_sample_time); + + if (report.range_num < 0) { + pr_err("Invalid time string\n"); + return -EINVAL; + } + } else { + report.range_num = 1; } sort__setup_elide(stdout); -- 2.7.4