Re: [rfc] fix Kconfig, hotplug_cpu is needed for swsusp

[Nigel Cunningham]

Hi.

On Thursday 30 March 2006 10:12, Ashok Raj wrote:
> On Thu, Mar 30, 2006 at 09:53:26AM +1000, Nigel Cunningham wrote:
> > >  config SUSPEND_SMP
> > >         bool
> > > -       depends on HOTPLUG_CPU && X86 && PM
> > > +       depends on HOTPLUG_CPU && X86 && PM && X86_GENERICARCH
> > >         default y
> >
> > Sounds like the right approach to me, but I think it's better to use
> > selects. I reckon that if the user selects SMP and then selects suspend
> > support, everything else required should be automatic. If we do too many
> > 'depends on's, they have to mess about figuring out what they haven't
> > selected yet and why they can't find the option to suspend. Most people
> > don't seem to know about '/' in make menuconfig.
>
> I tried the same with HOTPLUG_CPU as well, to just say
>
> select X86_GENERICARCH
>
> but problem was this didnt enforce the selection, i.e user still could go
> and revert the selection made automatic for him, i.e go ahead and select
> X86_PC, and it would still leave the HOTPLUG_CPU=y around. I thought
> "depends" sort of forces the selection.
>
> Maybe i didnt try correctly, if you have alternatives please do, actually
> even for HOTPLUG_CPU if this could be made automatic select, and at the
> same time enforced strictly, thats great.
>
> (for e.g i shoud;t be able to select X86_PC=y and leave
> CONFIG_HOTPLUG_CPU=y around)

I tried too, with the same results. It seems to me that the problem is that 
Kconfig doesn't enforce select for choices in the same way that it does for 
bools. Should this be filed as a bug with the Kconfig guys?

Regards,

Nigel

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