From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752610AbdBFRCT (ORCPT ); Mon, 6 Feb 2017 12:02:19 -0500 Received: from mail.skyhub.de ([78.46.96.112]:41450 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751414AbdBFRCQ (ORCPT ); Mon, 6 Feb 2017 12:02:16 -0500 Date: Mon, 6 Feb 2017 18:02:06 +0100 From: Borislav Petkov To: Vince Weaver Cc: Robert Richter , Ingo Molnar , Arnaldo Carvalho de Melo , Peter Zijlstra , lkml Subject: Re: [RFC PATCH] perf/stat: Add --disable-hwdt Message-ID: <20170206170206.phbb3rxl6reyokec@pd.tnic> References: <20170206121506.mtknwusus4djp2sx@pd.tnic> <20170206122231.GA9404@gmail.com> <20170206124116.7jmrmufthqtnd3dc@pd.tnic> <20170206124447.GA12772@gmail.com> <20170206124937.zlowglr5gpq35piy@pd.tnic> <20170206131832.GG4906@rric.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/20161014 (1.7.1) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Feb 06, 2017 at 09:23:33AM -0500, Vince Weaver wrote: > minor issue, but is it possibly to do anything about dmesg spam? From > what I recall every time you enable and disable the watchdog the kernel > prints a message. Makes for messy logs, especially when you run the > perf_fuzzer as root. You mean this: [81304.460656] NMI watchdog: enabled on all CPUs, permanently consumes one hw-PMU counter. We could turn it onto a pr_info_once(). I mean, the feedback that the thing has been enabled is the 1 in /proc/sys/kernel/nmi_watchdog anyway... -- Regards/Gruss, Boris. Good mailing practices for 400: avoid top-posting and trim the reply.