Received: by 2002:a05:6a10:5bc5:0:0:0:0 with SMTP id os5csp1552032pxb; Wed, 20 Oct 2021 07:20:04 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzzu12+fTmqFPgpmmQ0hOy+YFIF6srJUy185O5GEj81k5QzmtX/ISBg+Bt18JSxz1Rp5xGR X-Received: by 2002:a17:90a:9292:: with SMTP id n18mr7597869pjo.120.1634739604214; Wed, 20 Oct 2021 07:20:04 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1634739604; cv=none; d=google.com; s=arc-20160816; b=qTBb5sLad9A0aEC3oNlblmAn9RpFY4I/YvuyXSpkCRaQq2CyiTW042ok+gwo0P0vGN JQ6EQ0JwKW2HGsiKs4MnDDriBtYPdeH3s5eZoEfyqZJmrQ+dcxnxTmfVGJNiik16klmo vieSOZZMrKwIiewue9qpvMFPVPhqF7LOQhd21PDD6gwTU1T4nfEm0AsUlWzWrFyG+vV9 3USf4i6ytRASnJvaTq4iIBZ8nv1rE+CfEDn3kPkk979akN9s/j7xgHuArIwRFmDKxaKs CzLGCHvq0eB10ELdh5u/ZpUavrYuk9xex0gxyrCdlh8NJbiGppIITmDjqyh8AZegcHT5 pRCg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:subject:cc:to:from:date; bh=2YLNREadFl5oxiBSQ5PVV7ioUbhbuFev4WuVxzuXzWI=; b=P+HItM5oXd8yO72DJDpOEGnTLLWJ1sXP79QD0zkLkcwL1cadlN7Aw33NkcUMq3CrDD Inmgl12d05RpiEAeJ3pUnGyHAyttuu58Jg4+8p7al35AVhRHhwLJMnK6vN4mbINl/gxb 92H+kRsaU/tqDEwdjixlWSdLokzE3CMJR0sw26z3bZcmrIskof+nxr6o0tyl4HD+QV48 EMLfDRKE7bdy5TK0J8hwru8N9zxKJQwqYtZyC+oyffMqdZ52Z2pxosM9PDHTzhPUBO7N X5BJ9MRGdTwy9cKrQIzQ+LyCaLOXJgN7f2osEOZ9ekkCdgYiNW0IrkBi2gijkdeiq4mc Nynw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id cu1si7058724pjb.69.2021.10.20.07.19.49; Wed, 20 Oct 2021 07:20:04 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230029AbhJTOTR (ORCPT + 99 others); Wed, 20 Oct 2021 10:19:17 -0400 Received: from mail.kernel.org ([198.145.29.99]:56298 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230017AbhJTOTQ (ORCPT ); Wed, 20 Oct 2021 10:19:16 -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 8D6C2610E6; Wed, 20 Oct 2021 14:17:01 +0000 (UTC) Date: Wed, 20 Oct 2021 10:16:59 -0400 From: Steven Rostedt To: Masami Hiramatsu Cc: Li Zhijian , , , , , Philip Li , kernel test robot Subject: Re: [PATCH] kselftests: ftrace: limit the executing time by reading from cached trace Message-ID: <20211020101659.42360147@gandalf.local.home> In-Reply-To: <20211020115522.75f3e25247c1d30726e9b130@kernel.org> References: <20211018132616.2234853-1-lizhijian@cn.fujitsu.com> <20211018221636.47157e52@gandalf.local.home> <20211020112027.b01762f2adcfac99e71dcf99@kernel.org> <20211019223454.5da09d74@gandalf.local.home> <20211020115522.75f3e25247c1d30726e9b130@kernel.org> X-Mailer: Claws Mail 3.17.8 (GTK+ 2.24.33; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 20 Oct 2021 11:55:22 +0900 Masami Hiramatsu wrote: > --- a/tools/testing/selftests/ftrace/test.d/functions > +++ b/tools/testing/selftests/ftrace/test.d/functions > @@ -124,6 +124,12 @@ initialize_ftrace() { # Reset ftrace to initial-state > [ -f uprobe_events ] && echo > uprobe_events > [ -f synthetic_events ] && echo > synthetic_events > [ -f snapshot ] && echo 0 > snapshot > + > +# Stop tracing while reading the trace file by default, to prevent > +# the test results while checking it and to avoid taking a long time > +# to check the result. > + [ -f options/pause-on-trace ] && echo 1 > options/pause-on-trace > + Is there a way we can save the previous setting and put it back on reset? -- Steve