From patchwork Thu Dec 13 14:21:43 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tzvetomir Stoyanov X-Patchwork-Id: 10760161 Return-Path: Received: from mail-eopbgr720045.outbound.protection.outlook.com ([40.107.72.45]:10556 "EHLO NAM05-CO1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728138AbeLMOVq (ORCPT ); Thu, 13 Dec 2018 09:21:46 -0500 From: Tzvetomir Stoyanov To: "rostedt@goodmis.org" CC: "linux-trace-devel@vger.kernel.org" Subject: [PATCH 4/5] fix "trace-cmd reset" command to restore the default value of set_event_pid Date: Thu, 13 Dec 2018 14:21:43 +0000 Message-ID: <20181213142125.12149-5-tstoyanov@vmware.com> References: <20181213142125.12149-1-tstoyanov@vmware.com> In-Reply-To: <20181213142125.12149-1-tstoyanov@vmware.com> Content-Language: en-US MIME-Version: 1.0 Sender: linux-trace-devel-owner@vger.kernel.org List-ID: Content-Length: 1103 The "trace-cmd reset" command should restore ftrace to its default state. This patch sets "tracing/set_event_pid" to an empty string, when the "trace-cmd reset" command is executed. Signed-off-by: Tzvetomir Stoyanov --- tracecmd/trace-record.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/tracecmd/trace-record.c b/tracecmd/trace-record.c index 38d9871..f77e49a 100644 --- a/tracecmd/trace-record.c +++ b/tracecmd/trace-record.c @@ -3761,6 +3761,15 @@ static void reset_clock(void) write_instance_file(instance, "trace_clock", "local", "clock"); } +static void reset_event_pid(void) +{ + struct buffer_instance *instance; + + for_all_instances(instance) + write_instance_file(instance, "set_event_pid", "", "event_pid"); +} + + static void clear_triggers(void) { struct buffer_instance *instance; @@ -4464,6 +4473,7 @@ void trace_reset(int argc, char **argv) clear_triggers(); /* set clock to "local" */ reset_clock(); + reset_event_pid(); tracecmd_remove_instances(); clear_func_filters(); /* restore tracing_on to 1 */