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Message-ID: <fj62ld$6eo$1@ger.gmane.org> Date: Wed, 5 Dec 2007 11:39:25 +0000 (UTC) From: Frederik Himpe <fhimpe@...enet.be> To: linux-kernel@...r.kernel.org Cc: linuxppc-dev@...abs.org, linux-usb-devel@...ts.sourceforge.net 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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