linux-kernel - Re: [tip:perf/core] x86, nmi_watchdog: Remove the old nmi

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Message-ID: <4CE5878F.2010609@kernel.org>
Date:	Thu, 18 Nov 2010 12:07:43 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	Don Zickus <dzickus@...hat.com>
CC:	mingo@...hat.com, hpa@...or.com, linux-kernel@...r.kernel.org,
	tglx@...utronix.de, mingo@...e.hu,
	linux-tip-commits@...r.kernel.org
Subject: Re: [tip:perf/core] x86, nmi_watchdog: Remove the old nmi_watchdog

On 11/18/2010 12:02 PM, Don Zickus wrote:
> On Thu, Nov 18, 2010 at 11:39:50AM -0800, Yinghai Lu wrote:
>>>
>>> Please update the kernel-parameters.txt accordingly.
>>>
>>> and you need to keep unknown_nmi_panic or else as early_param().
>>>
>>> Also any corresponding part like "nmi_watchdog=off" ?
>>>
>>
>> also you have some other left-over...
>>
>> Documentation/kernel-parameters.txt:    unknown_nmi_panic
>> Documentation/kernel-parameters.txt:                    Set unknown_nmi_panic=1 early on boot.
>> Documentation/sysctl/kernel.txt:- unknown_nmi_panic
>> Documentation/sysctl/kernel.txt:unknown_nmi_panic:
>> arch/x86/include/asm/nmi.h:extern int unknown_nmi_panic;
>> arch/x86/kernel/apic/hw_nmi.c:int unknown_nmi_panic;
>> kernel/sysctl_binary.c: { CTL_INT,      KERN_UNKNOWN_NMI_PANIC,         "unknown_nmi_panic" },
>>
>> may still have left for nmi_watchdog too.
> 
> Yes the first part of the patch left in stubs.  The second piece should
> clean up stuff like nmi_watchdog.
> 
> On the other side unknown_nmi_panic is actually going to be added back in
> with another patch that re-arranges the default_do_nmi() call that I
> posted in another patch series.

those patches that you reposted from Huang Ying?

it seems there still have some arguments about that patchset. if that would take a while to get in.
Can you have a simple one to add back unknown_nmi_panic and nmi_watchdog=0 to early_param and sysctl?

Yinghai
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