linux-kernel - Re: [PATCH x86] [15/16] Force __cpuinit on for CONFIG_PM without HOTPLUG

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Date:	Thu, 10 Jan 2008 12:42:53 +0100
From:	Andi Kleen <ak@...e.de>
To:	Adrian Bunk <bunk@...nel.org>
Cc:	rjw@...k.pl, pavel@...e.cz, linux-kernel@...r.kernel.org,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [PATCH x86] [15/16] Force __cpuinit on for CONFIG_PM without HOTPLUG_CPU

On Thursday 10 January 2008 12:26:07 Adrian Bunk wrote:
> On Thu, Jan 10, 2008 at 12:15:15PM +0100, Andi Kleen wrote:
> > > But your patch does:
> > > 
> > > +config PM_CPUINIT
> > > +       bool
> > > +       depends on PM
> > 
> > That is because arch/x86/power/cpu.c where this happens is currently
> > 
> > obj-$(CONFIG_PM)                += cpu.o
> > 
> > If it was changed to CONFIG_something else then yes that dependency
> > should be changed too.
> 
> 
> Then fix this first.

Rafael indicated he would do that, but it is really outside the scope
of my patch. I was just interested in fixing a linker warning.

> 
> And the following other points you didn't bother to reply to also still 
> stand even after this fix:
> - already __cpuinit code will waste memory with CONFIG_PM_SLEEP=y

Don't know what your point is. Anyways if you think there is a problem
somewhere please feel free to write patches.

> - change shouldn't be x86 specific

CPU initialization is deeply architecture specific. I don't see much use
in generalizing that.

-Andi




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