From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Sylvain Munaut <tnt@246tNt.com>
Cc: linuxppc-dev list <linuxppc-dev@ozlabs.org>
Subject: Re: Implementing PowerManagment for a ppc target
Date: Wed, 01 Dec 2004 09:53:44 +1100 [thread overview]
Message-ID: <1101855224.5174.17.camel@gaston> (raw)
In-Reply-To: <41ACE8B0.8090307@246tNt.com>
On Tue, 2004-11-30 at 22:40 +0100, Sylvain Munaut wrote:
> Hi,
>
> I'm trying to implement Deep Sleep support for a ppc platform based on
> 5200 and I have some questions :
>
> - How should I "integrate" it to linux, what the proper way ? I've been
> trying #defining CONFIG_PM and
> using the set_pm_ops operation but my call backs never get called
> when doing a echo standby > /sys/power/state
>
> It justs says :
>
> $ echo standby >
> /sys/power/state
>
> Stopping tasks:
> ===
Looks like a kernel thread isn't properly stopping ... note that on
pmac, I don't call that PM core, I do my own salad which does not
involve stopping tasks...
> stopping tasks failed (2 tasks
> remaining)
> Restarting tasks...<6> Strange, init not
> stopped
> Strange, sh not
> stopped
>
> done
>
> Stopping tasks:
> ===
>
> stopping tasks failed (2 tasks
> remaining)
> Restarting tasks...<6> Strange, init not
> stopped
> Strange, sh not
> stopped
>
> done
>
> I've been trying to look at Documentation/ and the sources but still I'm
> not sure ...
>
>
> - How can I ensure that one of my function runs out of I Cache ? Some
> pieces of assembler needs to not
> acces memory when the last 'orders' are sent. Does just keeping it
> small and aligned enough ?
Can you explain more precisely why and what are your precise
requirements ? (You can catch me on irc eventually)
>
> Thanks,
>
> Sylvain Munaut
> _______________________________________________
> Linuxppc-dev mailing list
> Linuxppc-dev@ozlabs.org
> https://ozlabs.org/mailman/listinfo/linuxppc-dev
--
Benjamin Herrenschmidt <benh@kernel.crashing.org>
next prev parent reply other threads:[~2004-11-30 22:54 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-11-30 21:40 Implementing PowerManagment for a ppc target Sylvain Munaut
2004-11-30 22:53 ` Benjamin Herrenschmidt [this message]
2004-11-30 23:35 ` Hollis Blanchard
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