linux-kernel - Re: [PATCH] x86, nmi_watchdog: Remove ARCH_HAS_NMI_WATCHDOG and rely on CONFIG_HARDLOCKUP

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Date:	Sat, 18 Dec 2010 16:33:26 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Don Zickus <dzickus@...hat.com>
Cc:	Peter Zijlstra <peterz@...radead.org>, fweisbec@...il.com,
	LKML <linux-kernel@...r.kernel.org>, akpm@...ux-foundation.org,
	dannf@...com
Subject: Re: [PATCH] x86, nmi_watchdog:  Remove ARCH_HAS_NMI_WATCHDOG and
 rely on CONFIG_HARDLOCKUP_DETECTOR


* Don Zickus <dzickus@...hat.com> wrote:

> The x86 arch has shifted its use of the nmi_watchdog from a local implementation 
> to the global one provide by kernel/watchdog.c.  This shift has caused a whole 
> bunch of compile problems under different config options.  I attempt to simplify 
> things with the patch below.

ok, this patch is looking better - but even after applying it to -tip (and resolving 
the conflict) i get this link failure on 64-bit allyesconfig:

watchdog.c:(.text+0x7eacc): undefined reference to `hw_nmi_get_sample_period'

Thanks,

	Ingo
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