Re: linux-next: Tree for December 10 (x86 nmi_watchdog)

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On Sun, Dec 12, 2010 at 11:27 AM, Rakib Mullick <rakib.mullick@xxxxxxxxx> wrote:
> On Fri, Dec 10, 2010 at 11:25 PM, Randy Dunlap <randy.dunlap@xxxxxxxxxx> wrote:
>> On Fri, 10 Dec 2010 13:57:46 +1100 Stephen Rothwell wrote:
>>
>>> Hi all,
>>>
>>> Changes since 20101209:
>>
>>
>> arch/x86/kernel/apic/hw_nmi.c:28: error: redefinition of 'touch_nmi_watchdog'
>> include/linux/nmi.h:22: note: previous definition of 'touch_nmi_watchdog' was here
>>
> Hello Randy,
>
> Please checkout the following patch. Does it work?
> ----
>
> x86: Fix kernel build in hw_nmi.c when CONFIG_HARDLOCKUP_DETECTOR=n.
>
> This patch fixes kernel build introduced by commit
> 96a84c20d635fb1e98ab92f9fc517c4441f5c424. That commit supposed to
> define touch_nmi_watchdog when CONFIG_HARDLOCKUP_DETECTOR=y in
> hw_nmi.c. But mistakenly defines touch_nmi_watchdog when
> CONFIG_HARDLOCKUP_DETECTOR=n in hw_nmi.c.
>
> arch/x86/kernel/apic/hw_nmi.c:28: error: redefinition of ‘touch_nmi_watchdog’
> include/linux/nmi.h:23: error: previous definition of
> ‘touch_nmi_watchdog’ was here
>

NO. I don't think this is the correct one. Cause we don't want
touch_softlockup_watchdog() to be called if
CONFIG_HARDLOCKUP_DETECTOR=y.

> Signed-off-by: Rakib Mullick <rakib.mullick@xxxxxxxxx>
> ---
>
> diff --git a/arch/x86/kernel/apic/hw_nmi.c b/arch/x86/kernel/apic/hw_nmi.c
> index c558e11..2056569 100644
> --- a/arch/x86/kernel/apic/hw_nmi.c
> +++ b/arch/x86/kernel/apic/hw_nmi.c
> @@ -24,7 +24,7 @@ u64 hw_nmi_get_sample_period(void)
>  }
>  #endif
>
> -#ifndef CONFIG_HARDLOCKUP_DETECTOR
> +#ifdef CONFIG_HARDLOCKUP_DETECTOR
>  void touch_nmi_watchdog(void)
>  {
>        touch_softlockup_watchdog();
>
--
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