Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753833Ab3JBNze (ORCPT ); Wed, 2 Oct 2013 09:55:34 -0400 Received: from mail.skyhub.de ([78.46.96.112]:44580 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753339Ab3JBNzc (ORCPT ); Wed, 2 Oct 2013 09:55:32 -0400 Date: Wed, 2 Oct 2013 15:55:28 +0200 From: Borislav Petkov To: Peter Zijlstra Cc: mingo@kernel.org, hpa@zytor.com, linux-kernel@vger.kernel.org, torvalds@linux-foundation.org, akpm@linux-foundation.org, tglx@linutronix.de, bp@suse.de, linux-tip-commits@vger.kernel.org Subject: Re: [tip:x86/boot] x86/boot: Further compress CPUs bootup message Message-ID: <20131002135528.GC20568@pd.tnic> References: <20130930095624.GB16383@pd.tnic> <20131002115235.GR3081@twins.programming.kicks-ass.net> <20131002122020.GN26785@twins.programming.kicks-ass.net> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20131002122020.GN26785@twins.programming.kicks-ass.net> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1638 Lines: 37 On Wed, Oct 02, 2013 at 02:20:20PM +0200, Peter Zijlstra wrote: > > [ 0.314494] smpboot: Booting Node 0, Processors # 1[ 0.333365] NMI watchdog: enabled on all CPUs, permanently consumes one hw-PMU counter. > > # 2 # 3 # 4 # 5 OK > > [ 0.398473] smpboot: Booting Node 1, Processors # 6 # 7 # 8 # 9 # 10 # 11 OK > > [ 0.565198] smpboot: Booting Node 0, Processors # 12 # 13 # 14 # 15 # 16 # 17 OK > > [ 0.654558] smpboot: Booting Node 1, Processors # 18 # 19 # 20 # 21 # 22 # 23 OK > > [ 0.743527] Brought up 24 CPUs > > operator error here.. this was from the (old) fallback kernel; the new > one didn't actually boot. FWIW, this will happen, regardless of what we do: [ 0.089350] x86: Booting SMP configuration: [ 0.104355] NMI watchdog: enabled on all CPUs, permanently consumes one hw-PMU counter. [ 0.089427] .... node #0, CPUs: #1 #2 #3 [ 0.136301] x86: Booted up 1 node, 4 CPUs [ 0.136442] smpboot: Total of 4 processors activated (23146.32 BogoMIPS) as the NMI watchdog thing keeps shouting in-between. Do we still need it - I mean, how can I really use the info that NMI watchdog is consuming a perf counter? I mean I know how, but do people actually use that info or everyone knows already? :-) Thanks. -- Regards/Gruss, Boris. Sent from a fat crate under my desk. Formatting is fine. -- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/