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=-8.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 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 D65F6C28CBC for ; Wed, 6 May 2020 18:22:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BEFA92078C for ; Wed, 6 May 2020 18:22:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730058AbgEFSWY (ORCPT ); Wed, 6 May 2020 14:22:24 -0400 Received: from mga04.intel.com ([192.55.52.120]:39177 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728619AbgEFSWX (ORCPT ); Wed, 6 May 2020 14:22:23 -0400 IronPort-SDR: 1DArhKc3A+gQJluoir9519Yyy30ySSsoxfVADDOIkMOtUDRuFyPAvBaLnrFPpXClwbQwk4std8 2LO+Y8N5gcPw== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 May 2020 11:22:23 -0700 IronPort-SDR: ns4R22MnWHfFuIq+mrSPORk6soGLphBozU6velJdf/DC7Wqx1+J5NMW+UYcPaLZ4z4s9nfsFFd 0nsAs+azppXg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,360,1583222400"; d="scan'208";a="260191972" Received: from linux.intel.com ([10.54.29.200]) by orsmga003.jf.intel.com with ESMTP; 06 May 2020 11:22:23 -0700 Received: from [10.249.228.227] (abudanko-mobl.ccr.corp.intel.com [10.249.228.227]) by linux.intel.com (Postfix) with ESMTP id 3591058048A; Wed, 6 May 2020 11:22:21 -0700 (PDT) Subject: [PATCH v2 06/11] perf stat: introduce --ctl-fd[-ack] options From: Alexey Budankov To: Arnaldo Carvalho de Melo , Jiri Olsa Cc: Namhyung Kim , Alexander Shishkin , Peter Zijlstra , Ingo Molnar , Andi Kleen , linux-kernel References: Organization: Intel Corp. Message-ID: Date: Wed, 6 May 2020 21:22:19 +0300 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Introduce --ctl-fd[-ack] options to pass open file descriptors numbers from command line. Signed-off-by: Alexey Budankov --- tools/perf/builtin-stat.c | 10 ++++++++++ tools/perf/util/stat.h | 2 ++ 2 files changed, 12 insertions(+) diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index 5aab3ff1bbea..60c0d9521f74 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -187,6 +187,8 @@ static struct perf_stat_config stat_config = { .metric_only_len = METRIC_ONLY_LEN, .walltime_nsecs_stats = &walltime_nsecs_stats, .big_num = true, + .ctl_fd = -1, + .ctl_fd_ack = -1 }; static inline void diff_timespec(struct timespec *r, struct timespec *a, @@ -984,6 +986,10 @@ static struct option stat_options[] = { "Use with 'percore' event qualifier to show the event " "counts of one hardware thread by sum up total hardware " "threads of same physical core"), + OPT_INTEGER(0, "ctl-fd", &stat_config.ctl_fd, + "Listen on fd descriptor for command to control measurement ('e': enable events, 'd': disable events)"), + OPT_INTEGER(0, "ctl-fd-ack", &stat_config.ctl_fd_ack, + "Send control command completion ('a') to fd ack descriptor"), OPT_END() }; @@ -2180,6 +2186,8 @@ int cmd_stat(int argc, const char **argv) signal(SIGALRM, skip_signal); signal(SIGABRT, skip_signal); + perf_evlist__initialize_ctlfd(evsel_list, stat_config.ctl_fd, stat_config.ctl_fd_ack); + status = 0; for (run_idx = 0; forever || run_idx < stat_config.run_count; run_idx++) { if (stat_config.run_count != 1 && verbose > 0) @@ -2199,6 +2207,8 @@ int cmd_stat(int argc, const char **argv) if (!forever && status != -1 && !interval) print_counters(NULL, argc, argv); + perf_evlist__finalize_ctlfd(evsel_list); + if (STAT_RECORD) { /* * We synthesize the kernel mmap record just so that older tools diff --git a/tools/perf/util/stat.h b/tools/perf/util/stat.h index 027b9dcd902f..0b0fa3a2cde2 100644 --- a/tools/perf/util/stat.h +++ b/tools/perf/util/stat.h @@ -130,6 +130,8 @@ struct perf_stat_config { struct perf_cpu_map *cpus_aggr_map; u64 *walltime_run; struct rblist metric_events; + int ctl_fd; + int ctl_fd_ack; }; void update_stats(struct stats *stats, u64 val); -- 2.24.1