Re: [Dynamicpower-devel] Problem in suspend with nfs

[Todd P. <tod...@gm...>]

On 5/8/07, Manish RATHI <man...@st...> wrote:
> Hi,
>  I am  using boot from nfs configuration in .config.
> When  I goto sleep state (echo -n mem > /sys/power/state) then
> Kswapper thread is not suspended hence linux PM framework doesn't goto desired state.
>
> If use (CONFIG_CMDLINE="root=/dev/ram0 console=ttyAMA1,115200n8 init=linuxrc")  in .config then there is no kswapper thread in `ps` and system go into desired state.
>
> Looks there is requirement of appropriate signal handling in kswapper.
>
> Can any body give any clue?

Questions on standard Linux power management, not on the DPM patches,
to lin...@li... .  Mention the kernel revision,
exact error messages, etc.

NFS root is not a common desktop/server configuration, and suspend to
RAM often needs some tweaking to work properly.  I don't know the most
recent status of this.  There may be a system thread that needs to
handle the freeze signal, or specify the PF_NOFREEZE (or whatever it's
called these days) flag.

-- 
Todd