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 B3683C47247 for ; Fri, 8 May 2020 10:53:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 993A620870 for ; Fri, 8 May 2020 10:53:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727832AbgEHKxX (ORCPT ); Fri, 8 May 2020 06:53:23 -0400 Received: from mga01.intel.com ([192.55.52.88]:39631 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727121AbgEHKxW (ORCPT ); Fri, 8 May 2020 06:53:22 -0400 IronPort-SDR: pZ4a/3DS3OJRyv61tBJoRRgfd7cAxnIoQ59p+kTOtP9YmQimsMWsk1cRo1ZTMoMylzLLofy4Bt soxMuyiUxjvQ== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 May 2020 03:53:22 -0700 IronPort-SDR: 8McVCCELIja3m7yiNksP4+DOph/HgK89isJSHPrBAM9Jg0r9nDfcx6gtr0KH5h80TRGvQI29CF vuUvTK4aOd8Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,367,1583222400"; d="scan'208";a="250365776" Received: from linux.intel.com ([10.54.29.200]) by fmsmga007.fm.intel.com with ESMTP; 08 May 2020 03:53:22 -0700 Received: from [10.249.224.104] (abudanko-mobl.ccr.corp.intel.com [10.249.224.104]) by linux.intel.com (Postfix) with ESMTP id 3E0815805B4; Fri, 8 May 2020 03:53:20 -0700 (PDT) Subject: [PATCH v3 8/9] perf record: implement control commands handling From: Alexey Budankov To: Arnaldo Carvalho de Melo , Jiri Olsa Cc: Namhyung Kim , Alexander Shishkin , Peter Zijlstra , Ingo Molnar , Andi Kleen , linux-kernel References: <0b63e751-5c45-3311-d930-15f1ebe72601@linux.intel.com> Organization: Intel Corp. Message-ID: <26304bd6-33b1-2104-51e3-f9f75c577058@linux.intel.com> Date: Fri, 8 May 2020 13:53:18 +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: <0b63e751-5c45-3311-d930-15f1ebe72601@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 'enable' and 'disable' control commands coming from control file descriptor. Signed-off-by: Alexey Budankov --- tools/perf/builtin-record.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 44fba34bc5aa..3ed352508b83 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -1496,6 +1496,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv) bool disabled = false, draining = false; int fd; float ratio = 0; + enum evlist_ctl_cmd cmd = EVLIST_CTL_CMD_UNSUPPORTED; atexit(record__sig_exit); signal(SIGCHLD, sig_handler); @@ -1793,8 +1794,23 @@ 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 (evlist__ctlfd_process(rec->evlist, &cmd) > 0) { + switch (cmd) { + case EVLIST_CTL_CMD_ENABLE: + pr_info(EVLIST_ENABLED_MSG); + break; + case EVLIST_CTL_CMD_DISABLE: + pr_info(EVLIST_DISABLED_MSG); + break; + case EVLIST_CTL_CMD_ACK: + case EVLIST_CTL_CMD_UNSUPPORTED: + default: + break; + } + } + } waking++; if (evlist__filter_pollfd(rec->evlist, POLLERR | POLLHUP) == 0) -- 2.24.1