From: Borislav Petkov <bp@alien8.de>
To: Peter Zijlstra <peterz@infradead.org>
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
Date: Wed, 2 Oct 2013 15:55:28 +0200 [thread overview]
Message-ID: <20131002135528.GC20568@pd.tnic> (raw)
In-Reply-To: <20131002122020.GN26785@twins.programming.kicks-ass.net>
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.
--
next prev parent reply other threads:[~2013-10-02 13:55 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-05 10:57 [PATCH] x86, smpboot: fix announce_cpu() to print the last OK Libin
2013-09-05 17:52 ` [tip:x86/urgent] x86/smpboot: Fix announce_cpu() to printk() the last "OK" properly tip-bot for Libin
2013-09-25 10:07 ` Borislav Petkov
2013-09-25 18:29 ` Ingo Molnar
2013-09-26 23:15 ` Borislav Petkov
2013-09-27 6:51 ` Ingo Molnar
2013-09-27 10:38 ` Borislav Petkov
2013-09-27 14:32 ` Borislav Petkov
2013-09-27 14:34 ` [PATCH 1/2] x86, alternatives: Drop ancient lockdep fixup message Borislav Petkov
2013-09-28 8:28 ` [tip:core/locking] lockdep, x86/alternatives: " tip-bot for Borislav Petkov
2013-09-27 14:35 ` [PATCH 2/2] x86: Cleanup boot CPUs table Borislav Petkov
2013-09-28 8:25 ` Ingo Molnar
2013-09-28 10:23 ` Borislav Petkov
2013-09-28 13:44 ` Ingo Molnar
2013-09-28 17:47 ` [PATCH] x86, boot: Further compress CPUs bootup message Borislav Petkov
2013-09-28 17:54 ` Ingo Molnar
2013-09-28 18:04 ` [PATCH -v1.1] " Borislav Petkov
2013-09-28 18:12 ` Ingo Molnar
2013-09-28 19:15 ` Borislav Petkov
2013-09-28 19:25 ` Ingo Molnar
2013-09-28 19:36 ` [PATCH -v1.3] " Borislav Petkov
2013-09-28 19:42 ` [PATCH -v1.1] " H. Peter Anvin
2013-09-28 19:49 ` Borislav Petkov
2013-09-28 19:54 ` Borislav Petkov
2013-09-28 19:58 ` Ingo Molnar
2013-09-28 20:08 ` Borislav Petkov
2013-09-28 23:13 ` H. Peter Anvin
2013-09-29 9:14 ` Borislav Petkov
2013-09-29 15:17 ` [PATCH -v1.4] " Borislav Petkov
2013-09-29 15:44 ` [PATCH -v1.1] " H. Peter Anvin
2013-09-30 6:28 ` Ingo Molnar
2013-09-30 9:56 ` Borislav Petkov
2013-10-01 8:53 ` Ingo Molnar
2013-10-01 9:10 ` [tip:x86/boot] x86/boot: " tip-bot for Borislav Petkov
2013-10-02 11:52 ` Peter Zijlstra
2013-10-02 12:18 ` Ingo Molnar
2013-10-02 12:20 ` Peter Zijlstra
2013-10-02 13:55 ` Borislav Petkov [this message]
2013-09-28 19:58 ` [PATCH -v1.1] x86, boot: " Ingo Molnar
2013-09-28 20:10 ` Borislav Petkov
2013-09-29 5:10 ` H. Peter Anvin
2013-09-29 2:55 ` [PATCH 2/2] x86: Cleanup boot CPUs table Mike Galbraith
2013-09-28 8:28 ` [tip:x86/boot] x86: Improve the printout of the SMP bootup CPU table tip-bot for Borislav Petkov
2013-09-29 4:25 ` Yinghai Lu
2013-09-27 12:48 ` [tip:x86/urgent] x86/smpboot: Fix announce_cpu() to printk() the last "OK" properly Borislav Petkov
2013-09-27 13:33 ` Ingo Molnar
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