linux-kernel - Re: CFS and suspend2: hang in atomic copy

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Message-Id: <200704190112.52838.mail@earthworm.de>
Date:	Thu, 19 Apr 2007 01:12:48 +0200
From:	Christian Hesse <mail@...thworm.de>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	linux-kernel@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Con Kolivas <kernel@...ivas.org>,
	Nick Piggin <npiggin@...e.de>, Mike Galbraith <efault@....de>,
	Arjan van de Ven <arjan@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	suspend2-devel@...ts.suspend2.net
Subject: Re: CFS and suspend2: hang in atomic copy

On Thursday 19 April 2007, Ingo Molnar wrote:
> * Christian Hesse <mail@...thworm.de> wrote:
> > Linux 2.6.21-rc7
> > Suspend2 2.2.9.11 (applies cleanly to -rc7)
> > CFS v3 (without any additional patches)
> >
> > And it still hangs on suspend.
>
> i just tried the same and it suspended+resumed just fine:
>
> Restarting tasks ... done.
> Suspend2 debugging info:
> - Suspend core   : 2.2.9.12
> - Kernel Version : 2.6.21-rc7-CFS-v3
> - Compiler vers. : 4.0
> - Attempt number : 2
> - Parameters     : 0 81920 0 0 0 0
> - Overall expected compression percentage: 0.
> - Compressor is 'lzf'.
>   Compressed 31133696 bytes into 14880587 (52 percent compression).
> - SwapAllocator active.
>   Swap available for image: 512036 pages.
> - FileAllocator inactive.
> - I/O speed: Write 76 MB/s, Read 42 MB/s.
> - Extra pages    : 18 used/500.
>
> could you send me your .config?

My config is attached.

I now got some error message from my system:

http://www.eworm.de/tmp/cfs-suspend.jpg
-- 
Regards,
Chris

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