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=-6.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 67B3BC43331 for ; Sun, 29 Mar 2020 18:44:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3804020784 for ; Sun, 29 Mar 2020 18:44:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728592AbgC2SnR (ORCPT ); Sun, 29 Mar 2020 14:43:17 -0400 Received: from mail.kernel.org ([198.145.29.99]:42810 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728571AbgC2SnR (ORCPT ); Sun, 29 Mar 2020 14:43:17 -0400 Received: from gandalf.local.home (cpe-66-24-58-225.stny.res.rr.com [66.24.58.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 035D920838; Sun, 29 Mar 2020 18:43:17 +0000 (UTC) Received: from rostedt by gandalf.local.home with local (Exim 4.93) (envelope-from ) id 1jIctv-002FrO-Tw; Sun, 29 Mar 2020 14:43:15 -0400 Message-Id: <20200329184315.812700260@goodmis.org> User-Agent: quilt/0.65 Date: Sun, 29 Mar 2020 14:42:54 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Ingo Molnar , Andrew Morton , Shuah Khan , linux-kselftest@vger.kernel.org, Masami Hiramatsu Subject: [for-next][PATCH 02/21] selftest/ftrace: Fix function trigger test to handle trace not disabling the tracer References: <20200329184252.289087453@goodmis.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kselftest-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org From: "Steven Rostedt (VMware)" The ftrace selftest "ftrace - test for function traceon/off triggers" enables all events and reads the trace file. Now that the trace file does not disable tracing, and will attempt to continually read new data that is added, the selftest gets stuck reading the trace file. This is because the data added to the trace file will fill up quicker than the reading of it. By only enabling scheduling events, the read can keep up with the writes. Instead of enabling all events, only enable the scheduler events. Link: http://lkml.kernel.org/r/20200318111345.0516642e@gandalf.local.home Cc: Shuah Khan Cc: linux-kselftest@vger.kernel.org Acked-by: Masami Hiramatsu Signed-off-by: Steven Rostedt (VMware) --- .../selftests/ftrace/test.d/ftrace/func_traceonoff_triggers.tc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func_traceonoff_triggers.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func_traceonoff_triggers.tc index 0c04282d33dd..1947387fe976 100644 --- a/tools/testing/selftests/ftrace/test.d/ftrace/func_traceonoff_triggers.tc +++ b/tools/testing/selftests/ftrace/test.d/ftrace/func_traceonoff_triggers.tc @@ -41,7 +41,7 @@ fi echo '** ENABLE EVENTS' -echo 1 > events/enable +echo 1 > events/sched/enable echo '** ENABLE TRACING' enable_tracing -- 2.25.1