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=-3.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS autolearn=no 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 1109BC352A4 for ; Wed, 12 Feb 2020 21:14:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D23EB217F4 for ; Wed, 12 Feb 2020 21:14:20 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="0JqzhBuv" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729236AbgBLVOU (ORCPT ); Wed, 12 Feb 2020 16:14:20 -0500 Received: from merlin.infradead.org ([205.233.59.134]:33528 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727548AbgBLVOT (ORCPT ); Wed, 12 Feb 2020 16:14:19 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=merlin.20170209; h=Content-Type:MIME-Version:References: Subject:Cc:To:From:Date:Message-Id:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:In-Reply-To; bh=/oBPWrG9EVgl4LEO/hSDsTUt0NUc1tA6jTJTcYoVfdU=; b=0JqzhBuvcQyBJXQ1KClbpmF3m3 n92gueIu7+MWZTnnIi/5N8GpQkHF1gHJeFVKgRJcXHSgNRUbtXEulUpM3G3VSxM8iTsJvDyD4BIrF CHNwrQEE27vIC+6K/dom06sSQJLNBXJ6MPTAYNCeHbxsRH9GY+8jRWgvM/72aICyQ8e6UgWsS6ZbJ WIWEGDdzMTilLvPvk1OIjerEY+J5LiRESEYPCw9yzZfkPVQXalhkEIX4cu3Lipxmrh+hGeATbdu4E Hpt6XBjiFNGwmKzH8LtaKTXEFCtwYhouLo0DmhPvbMgodkpcic7Ms1v9xcA4cc1z9gUZX6DVQKp4a xdtuHAvw==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by merlin.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1j1zKM-0002Kw-0W; Wed, 12 Feb 2020 21:13:46 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id C87163077DC; Wed, 12 Feb 2020 22:11:52 +0100 (CET) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 0) id 911F42019658F; Wed, 12 Feb 2020 22:13:41 +0100 (CET) Message-Id: <20200212210750.312024711@infradead.org> User-Agent: quilt/0.65 Date: Wed, 12 Feb 2020 22:01:48 +0100 From: Peter Zijlstra To: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, rostedt@goodmis.org Cc: peterz@infradead.org, mingo@kernel.org, joel@joelfernandes.org, gregkh@linuxfoundation.org, gustavo@embeddedor.com, tglx@linutronix.de, paulmck@kernel.org, josh@joshtriplett.org, mathieu.desnoyers@efficios.com, jiangshanlai@gmail.com Subject: [PATCH v2 9/9] perf,tracing: Allow function tracing when !RCU References: <20200212210139.382424693@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Since perf is now able to deal with !rcu_is_watching() contexts, remove the restraint. Signed-off-by: Peter Zijlstra (Intel) --- kernel/trace/trace_event_perf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/kernel/trace/trace_event_perf.c +++ b/kernel/trace/trace_event_perf.c @@ -477,7 +477,7 @@ static int perf_ftrace_function_register { struct ftrace_ops *ops = &event->ftrace_ops; - ops->flags = FTRACE_OPS_FL_RCU; + ops->flags = 0; ops->func = perf_ftrace_function_call; ops->private = (void *)(unsigned long)nr_cpu_ids;