Subject: Re: [BUG] 2.6.37-rc3 massive interactivity regression on ARM
From: Peter Zijlstra <peterz@infradead.org>
To: Russell King - ARM Linux <linux@arm.linux.org.uk>
Cc: Venkatesh Pallipadi <venki@google.com>, Mikael Pettersson <mikpe@it.uu.se>,
        Ingo Molnar <mingo@elte.hu>, linux-kernel@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org,
        John Stultz <johnstul@us.ibm.com>
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Date: Fri, 10 Dec 2010 19:43:10 +0100
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On Fri, 2010-12-10 at 19:10 +0100, Peter Zijlstra wrote:
> There are lots of places in the scheduler that rely on u64 wrap, for now
> the easiest thing for ARM would be to select HAVE_UNSTABLE_SCHED_CLOCK
> for those platforms that implement a short sched_clock().
> 
> While that isn't ideal it is something that makes it work, we can work
> on something more suitable for future kernels. 

Either that, or the thing you proposed a while back in this thread.

Since ARM doesn't have NMIs something like that should work just fine.
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