linux-kernel - Re: CONFIG_NO_HZ breaks blktrace timestamps

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Message-ID: <20080111092513.GO6258@kernel.dk>
Date:	Fri, 11 Jan 2008 10:25:16 +0100
From:	Jens Axboe <jens.axboe@...cle.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	David Dillow <dillowda@...l.gov>,
	Guillaume Chazarain <guichaz@...oo.fr>,
	linux-kernel@...r.kernel.org, linux-btrace@...r.kernel.org,
	mingo@...hat.com, tglx@...utronix.de
Subject: Re: CONFIG_NO_HZ breaks blktrace timestamps

On Fri, Jan 11 2008, Ingo Molnar wrote:
> 
> * Jens Axboe <jens.axboe@...cle.com> wrote:
> 
> > Thanks for reporting this. Guillaume, did you write this patch? We 
> > need to get it into 2.6.24-rc7 asap. Let me know if I should take care 
> > of that, or if it's already queued up elsewhere.
> 
> they are from the scheduler git tree (except the first debug patch), but 
> queued up for v2.6.25 at the moment.

So this means that blktrace will be broken with CONFIG_NO_HZ for 2.6.24?
That's clearly a regression.

-- 
Jens Axboe

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