linux-kernel - Re: [Regression] 2.6.24-git3: Major annoyance during suspend/hibernation on x86-64 (bisected)

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Message-ID: <b647ffbd0802010711q744f5023mdbfccd9540556b70@mail.gmail.com>
Date:	Fri, 1 Feb 2008 16:11:43 +0100
From:	"Dmitry Adamushko" <dmitry.adamushko@...il.com>
To:	"Peter Zijlstra" <a.p.zijlstra@...llo.nl>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>, "Ingo Molnar" <mingo@...e.hu>,
	"Steven Rostedt" <srostedt@...hat.com>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	"Linus Torvalds" <torvalds@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [Regression] 2.6.24-git3: Major annoyance during suspend/hibernation on x86-64 (bisected)

On 01/02/2008, Peter Zijlstra <a.p.zijlstra@...llo.nl> wrote:

> ---
>  - restore the old wakeup mechanism

and how does it change behavior, logically-wise?

do we somehow miss a 'wake-up' from kthread_stop() so that its caller
gets blocked until watchdog's msleep_interruptible(10000) timeouts? On
average, it would take +-5 sec. and might explain the first
observation of Ravael -- "...adds a 5 - 10 sec delay..." (although,
lately he reported up to +30 sec. delays).

(/me goint to also try reproducing it later today)

> [ ... ]

-- 
Best regards,
Dmitry Adamushko
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