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Date:	Wed, 5 Dec 2007 11:39:25 +0000 (UTC)
From:	Frederik Himpe <>
Subject:  Re: [PATCH v2] Fix hardware IRQ time accounting problem.

On Tue, 04 Dec 2007 16:51:44 +1100, Tony Breeds wrote:

> The commit fa13a5a1f25f671d084d8884be96fc48d9b68275 (sched: restore
> deterministic CPU accounting on powerpc), unconditionally calls
> update_process_tick() in system context.  In the deterministic
> accounting case this is the correct thing to do.  However, in the
> non-deterministic accounting case we need to not do this, and results in
> the time accounted as hardware irq time being artificially elevated.
> Also this patch collapses 2 consecutive '#ifdef
> CONFIG_VIRT_CPU_ACCOUNTING' checks in time.h into one for neatness.

I can confirm this patch fixed the problem for me. Thank you!

Frederik Himpe

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