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 5DB10C43331 for ; Fri, 27 Mar 2020 08:50:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3A90420717 for ; Fri, 27 Mar 2020 08:50:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727143AbgC0Iuc (ORCPT ); Fri, 27 Mar 2020 04:50:32 -0400 Received: from mga02.intel.com ([134.134.136.20]:8312 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726379AbgC0Iuc (ORCPT ); Fri, 27 Mar 2020 04:50:32 -0400 IronPort-SDR: jnQwyytBsfJTrd6pZT4l5AQD3kqYNatVjoCUv5AuOA9oyQ9r/npsTGbKYLWWHPVydXglAORg3Z Ht5XPw0t8plg== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Mar 2020 01:50:31 -0700 IronPort-SDR: Uisx96pK35clw9YgyfO/QLv+sU+bBHhXMMvK/yJZU1YAmdsQemiqJFJkEYlZRePanbxN4mUZXH xcqIWN7gxt6Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.72,311,1580803200"; d="scan'208";a="448940722" Received: from linux.intel.com ([10.54.29.200]) by fmsmga006.fm.intel.com with ESMTP; 27 Mar 2020 01:50:31 -0700 Received: from [10.249.36.56] (abudanko-mobl.ccr.corp.intel.com [10.249.36.56]) by linux.intel.com (Postfix) with ESMTP id E4F885803E3; Fri, 27 Mar 2020 01:50:28 -0700 (PDT) Subject: [PATCH v1 7/8] perf record: implement resume and pause control commands handling From: Alexey Budankov To: Arnaldo Carvalho de Melo Cc: Jiri Olsa , Namhyung Kim , Alexander Shishkin , Peter Zijlstra , Ingo Molnar , Andi Kleen , linux-kernel References: <825a5132-b58d-c0b6-b050-5a6040386ec7@linux.intel.com> Organization: Intel Corp. Message-ID: Date: Fri, 27 Mar 2020 11:50:27 +0300 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.6.0 MIME-Version: 1.0 In-Reply-To: <825a5132-b58d-c0b6-b050-5a6040386ec7@linux.intel.com> 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 Implement handling of events coming from control file descriptor. Signed-off-by: Alexey Budankov --- tools/perf/builtin-record.c | 21 ++++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-) diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index f99751943b40..ae6f7d08e472 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -1418,6 +1418,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv) struct evlist *sb_evlist = NULL; int fd; float ratio = 0; + enum evlist_ctl_cmd cmd = CTL_CMD_UNSUPPORTED; atexit(record__sig_exit); signal(SIGCHLD, sig_handler); @@ -1620,6 +1621,8 @@ static int __cmd_record(struct record *rec, int argc, const char **argv) perf_evlist__start_workload(rec->evlist); } + perf_evlist__initialize_ctlfd(rec->evlist, opts->ctl_fd, opts->ctl_fd_ack); + if (opts->initial_delay) { pr_info(PERF_EVLIST__PAUSED_MSG); if (opts->initial_delay > 0) { @@ -1710,8 +1713,23 @@ static int __cmd_record(struct record *rec, int argc, const char **argv) * Propagate error, only if there's any. Ignore positive * number of returned events and interrupt error. */ - if (err > 0 || (err < 0 && errno == EINTR)) + if (err > 0 || (err < 0 && errno == EINTR)) { err = 0; + if (perf_evlist__ctlfd_process(rec->evlist, &cmd) > 0) { + switch (cmd) { + case CTL_CMD_RESUME: + pr_info(PERF_EVLIST__RESUMED_MSG); + break; + case CTL_CMD_PAUSE: + pr_info(PERF_EVLIST__PAUSED_MSG); + break; + case CTL_CMD_ACK: + case CTL_CMD_UNSUPPORTED: + default: + break; + } + } + } waking++; if (evlist__filter_pollfd(rec->evlist, POLLERR | POLLHUP) == 0) @@ -1751,6 +1769,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv) record__synthesize_workload(rec, true); out_child: + perf_evlist__finalize_ctlfd(rec->evlist); record__mmap_read_all(rec, true); record__aio_mmap_read_sync(rec); -- 2.24.1