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Re: [BUG] MIPS: Hibernation in the latest linux-mips:master branch not w

To: Ralf Baechle <>
Subject: Re: [BUG] MIPS: Hibernation in the latest linux-mips:master branch not work
From: Wu Zhangjin <>
Date: Tue, 30 Jun 2009 23:11:27 +0800
Cc: LKML <>,, Pavel Machek <>
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Organization: DSLab, Lanzhou University, China
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On Tue, 2009-06-30 at 15:45 +0100, Ralf Baechle wrote:
> On Tue, Jun 30, 2009 at 10:41:08PM +0800, Wu Zhangjin wrote:
> > I just updated my git repository to the master branch of the latest
> > linux-mips git repository, and tested the STD/Hibernation support on
> > fuloong2e and yeeloong2f, it failed:
> > 
> > when using the no_console_suspend kernel command line to debug, it
> > stopped on:
> > 
> > PM: Shringking memory... done (1000 pages freed)
> > PM: Freed 160000 kbytes in 1.68 seconds (95.23 MB/s)
> > PM: Creating hibernation image:
> > PM: Need to copy 5053 pages
> > PM: Hibernation image created (4195 pages copied)
> > 
> > and then, the number indicator light of keyboard works well, but can not
> > type anything. 
> > 
> > anybody have tested it on another platform? does it work?
> At the time of the merge I tested it on Malta and found it to be working.

thanks! I will test it again and analyze why.

hi, ralf, in the latest master branch of linux-mips git repo, seems
there is a need to select the SYS_SUPPORTS_HOTPLUG_CPU option in every
uni-processor board, otherwise, the suspend/hibernation can not be used,
because you have set:

    def_bool y

    def_bool y

so, the board-specific patch must be pushed by the maintainers of
boards. and if the board support SMP, they must implement the
mips-specific hotplug support, is this right? I have selected
SYS_SUPPORTS_HOTPLUG_CPU in LEMOTE_FULONG and will push a relative patch

Wu Zhangjin

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