Re: CONFIG_NO_HZ breaks blktrace timestamps

From: Guillaume Chazarain
Date: Fri Jan 11 2008 - 17:31:48 EST


Ingo Molnar <mingo@xxxxxxx> wrote:

> ok. I have applied all but this one

Hmm, I couldn't find them in mingo/linux-2.6-sched-devel.git.

> i think it's much simpler to do what i have below. Could you try it on
> your box? Or if it is using ACPI idle - in that case the callbacks
> should already be there and there should be no need for further fixups.
>
> Subject: x86: idle wakeup event in the HLT loop

I use ACPI, so this patch has no effect.

FYI, I'm currently trying to track down where rq->clock started to
overflow with nohz=off, and it seems to be before 2.6.23, so my patches
are not at fault ;-) Or maybe I am dreaming and it was always
overflowing. Investigating ...

--
Guillaume
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