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=-14.0 required=3.0 tests=BAYES_00,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 A1C20C4332B for ; Sat, 2 Jan 2021 22:06:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 77E05207A1 for ; Sat, 2 Jan 2021 22:06:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727304AbhABWGS convert rfc822-to-8bit (ORCPT ); Sat, 2 Jan 2021 17:06:18 -0500 Received: from us-smtp-delivery-44.mimecast.com ([205.139.111.44]:49576 "EHLO us-smtp-delivery-44.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727196AbhABWGQ (ORCPT ); Sat, 2 Jan 2021 17:06:16 -0500 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-144-JD6mJV6wOO6LXbLw0nBA3w-1; Sat, 02 Jan 2021 17:05:23 -0500 X-MC-Unique: JD6mJV6wOO6LXbLw0nBA3w-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 2FAF9180A095; Sat, 2 Jan 2021 22:05:22 +0000 (UTC) Received: from krava.redhat.com (unknown [10.40.192.22]) by smtp.corp.redhat.com (Postfix) with ESMTP id 72C671A353; Sat, 2 Jan 2021 22:05:19 +0000 (UTC) From: Jiri Olsa To: Arnaldo Carvalho de Melo Cc: lkml , Peter Zijlstra , Ingo Molnar , Mark Rutland , Namhyung Kim , Alexander Shishkin , Michael Petlan , Ian Rogers , Stephane Eranian , Alexei Budankov Subject: [PATCH 11/22] perf daemon: Add stop command Date: Sat, 2 Jan 2021 23:04:30 +0100 Message-Id: <20210102220441.794923-12-jolsa@kernel.org> In-Reply-To: <20210102220441.794923-1-jolsa@kernel.org> References: <20210102220441.794923-1-jolsa@kernel.org> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=jolsa@kernel.org X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: kernel.org Content-Transfer-Encoding: 8BIT Content-Type: text/plain; charset=WINDOWS-1252 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add 'perf daemon stop' command to stop daemon process and all running sessions. Example: # cat ~/.perfconfig [daemon] base=/opt/perfdata [session-cycles] run = -m 10M -e cycles --overwrite --switch-output -a [session-sched] run = -m 20M -e sched:* --overwrite --switch-output -a Starting the daemon: # perf daemon start Stopping the daemon # perf daemon stop Daemon is not running, nothing to connect to: # perf daemon connect error: Connection refused Signed-off-by: Jiri Olsa --- tools/perf/builtin-daemon.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/tools/perf/builtin-daemon.c b/tools/perf/builtin-daemon.c index a7ffbecf8d14..45748bb471ec 100644 --- a/tools/perf/builtin-daemon.c +++ b/tools/perf/builtin-daemon.c @@ -524,6 +524,7 @@ static int setup_server_socket(struct daemon *daemon) enum { CMD_LIST = 0, CMD_SIGNAL = 1, + CMD_STOP = 2, CMD_MAX, }; @@ -650,6 +651,10 @@ static int handle_server_socket(struct daemon *daemon, int sock_fd) case CMD_SIGNAL: ret = cmd_session_kill(daemon, &cmd, out); break; + case CMD_STOP: + done = 1; + pr_debug("perf daemon is exciting\n"); + break; default: break; } @@ -992,6 +997,27 @@ static int __cmd_signal(struct daemon *daemon, struct option parent_options[], return send_cmd(daemon, &cmd); } +static int __cmd_stop(struct daemon *daemon, struct option parent_options[], + int argc, const char **argv) +{ + struct option start_options[] = { + OPT_PARENT(parent_options), + OPT_END() + }; + union cmd cmd = { .cmd = CMD_STOP, }; + + argc = parse_options(argc, argv, start_options, daemon_usage, 0); + if (argc) + usage_with_options(daemon_usage, start_options); + + if (setup_config(daemon)) { + pr_err("failed: config not found\n"); + return -1; + } + + return send_cmd(daemon, &cmd); +} + int cmd_daemon(int argc, const char **argv) { struct option daemon_options[] = { @@ -1015,6 +1041,8 @@ int cmd_daemon(int argc, const char **argv) if (argc) { if (!strcmp(argv[0], "signal")) return __cmd_signal(&__daemon, daemon_options, argc, argv); + else if (!strcmp(argv[0], "stop")) + return __cmd_stop(&__daemon, daemon_options, argc, argv); pr_err("failed: unknown command '%s'\n", argv[0]); return -1; -- 2.26.2