Re: CONFIG_SUSPEND? (was: Re: [GIT PATCH] ACPI patches for 2.6.23-rc1)

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On Mon, 30 Jul 2007, Len Brown wrote:

On Saturday 28 July 2007 12:55, Linus Torvalds wrote:

So I think the real issue is that we allow that
"suspend_devices_and_enter()" code to be compiled without HOTPLUG_CPU in
the first place. It's not supposed to work that way.
I don't see how CONFIG_HOTPLUG_CPU justifies its own existence.
This e-mail thread would have never happened if it were simply included
in CONFIG_SMP, always.

I agree, of course, that ACPI should never have had to work-around
this by selecting HOTPLUG_CPU.  But even though it is now done at
the right layer, I don't see why PM should have to
be bothered with selecting HOTPLUG_CPU either --
it should just come with SMP.
why do you need hotplug just becouse you have muliple cpus? if you never
have any intention of useing suspend and your hardware doesn't support
hotplugging, why should you have to include the code for it?
Dvaid Lang
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