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 D9D74C47077 for ; Wed, 13 May 2020 08:04:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BD40A20769 for ; Wed, 13 May 2020 08:04:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729838AbgEMIE3 (ORCPT ); Wed, 13 May 2020 04:04:29 -0400 Received: from mga12.intel.com ([192.55.52.136]:36955 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726092AbgEMIE3 (ORCPT ); Wed, 13 May 2020 04:04:29 -0400 IronPort-SDR: rzNmS4yBbc0OB0qugDU3l6drX7lfMDjXsdSHJXUHn4nYeqMNsrzUkEBfFFVjkzOWnUaVS8OzyU x+IrNt9Hl+bg== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 May 2020 01:04:29 -0700 IronPort-SDR: hvfmiW9n/dexrwztqT/5I5mS1V6ijzXjhh41vo0KbnBPK7m+JfGf1zzjs6OwR1n5vzONKWeoT4 GpTjzuNT0z7g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,387,1583222400"; d="scan'208";a="463844698" Received: from linux.intel.com ([10.54.29.200]) by fmsmga005.fm.intel.com with ESMTP; 13 May 2020 01:04:29 -0700 Received: from [10.249.229.18] (abudanko-mobl.ccr.corp.intel.com [10.249.229.18]) by linux.intel.com (Postfix) with ESMTP id 1198F5804B6; Wed, 13 May 2020 01:04:26 -0700 (PDT) Subject: [PATCH v3 8/9] perf record: implement 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: Organization: Intel Corp. Message-ID: <25f98682-5ef2-4257-f302-93b29da707a9@linux.intel.com> Date: Wed, 13 May 2020 11:04:25 +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 50dc2fe626e5..72f388623364 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -1505,6 +1505,7 @@ 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); @@ -1802,8 +1803,23 @@ 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