Re: [PATCH] Propagate new nonpanic bootmem macros to CONFIG_HAVE_ARCH_BOOTMEM_NODE

[Ingo Molnar <mingo@elte.hu>]

* Johannes Weiner <hannes@saeurebad.de> wrote:

> Hi Ingo,
> 
> Ingo Molnar <mingo@elte.hu> writes:
> 
> > * Jan Beulich <jbeulich@novell.com> wrote:
> >
> >> Sorry for not noticing this:
> >> Acked-by: Jan Beulich <jbeulich@novell.com>
> >> 
> >> >>> Johannes Weiner <hannes@saeurebad.de> 13.08.08 10:17 >>>
> >> Commit 74768ed833344b "page allocator: use no-panic variant of
> >> alloc_bootmem() in alloc_large_system_hash()" introduced two new
> >> _nopanic macros which are undefined for CONFIG_HAVE_ARCH_BOOTMEM_NODE.
> >> 
> >> Signed-off-by: Johannes Weiner <hannes@saeurebad.de>
> >
> > btw., i dont think the fix is complete, a quick grep shows:
> >
> >   arch/avr32/Kconfig:config HAVE_ARCH_BOOTMEM_NODE
> 
> Uhm, I think a fix for that would be removing the knob from the avr32 
> Kconfig.  It defaults to n and I couldn't find a place where this gets 
> enabled.
> 
> Furthermore, there doesn't seem to be any arch-specific code 
> associated with it (grep -R ARCH_BOOTMEM_NODE arch/avr32).

ok, indeed. I dont think it should be removed: it makes sense for an 
architecture to list all Kconfig knobs that _might_ matter - even if 
they are disabled for an architecture.

That makes it easier to know whether a Kconfig knob that is disables is 
disabled because the arch wants it disabled, because the arch wants it 
enabled, or because it's a knew knob the arch does not know about yet. 
So it's 3 states really.

	Ingo