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, 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 0C117C28CBC for ; Wed, 6 May 2020 18:29:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E95442192A for ; Wed, 6 May 2020 18:29:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730341AbgEFS3P (ORCPT ); Wed, 6 May 2020 14:29:15 -0400 Received: from mga01.intel.com ([192.55.52.88]:60991 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730181AbgEFS3K (ORCPT ); Wed, 6 May 2020 14:29:10 -0400 IronPort-SDR: rOul27SXoC24q3Y0tiTVz2nJb8pIEJCSbx3B5Uid7jT49VetsoF9LLlluQGVuNHBLA/ygyxyTN J/spM7dRj/7g== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 May 2020 11:29:09 -0700 IronPort-SDR: EK5bpHvrmLWRKas6QxOzKpS2y34lxOHVL0qgTYpkLCnwfjykOx0JYEFVvi7XnZR3PwA+U8mK+/ 2YfSX8z0PAiA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,360,1583222400"; d="scan'208";a="339090730" Received: from linux.intel.com ([10.54.29.200]) by orsmga001.jf.intel.com with ESMTP; 06 May 2020 11:29:09 -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 51FD758043A; Wed, 6 May 2020 11:29:07 -0700 (PDT) Subject: [PATCH v2 09/11] 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: Organization: Intel Corp. Message-ID: Date: Wed, 6 May 2020 21:29:05 +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 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 8a14e68b86ad..2278a3efc747 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 = 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 (perf_evlist__ctlfd_process(rec->evlist, &cmd) > 0) { + switch (cmd) { + case CTL_CMD_ENABLE: + pr_info(PERF_EVLIST__ENABLED_MSG); + break; + case CTL_CMD_DISABLE: + pr_info(PERF_EVLIST__DISABLED_MSG); + break; + case CTL_CMD_ACK: + case CTL_CMD_UNSUPPORTED: + default: + break; + } + } + } waking++; if (evlist__filter_pollfd(rec->evlist, POLLERR | POLLHUP) == 0) -- 2.24.1