Re: [RFC][PATCH] rip out x86_32 NUMA remapping code

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On Thu, Jan 31, 2013 at 1:59 PM, H. Peter Anvin <hpa@xxxxxxxxx> wrote:
> On 01/31/2013 01:55 PM, Yinghai Lu wrote:
>> On Thu, Jan 31, 2013 at 1:51 PM, H. Peter Anvin <hpa@xxxxxxxxx> wrote:
>>> I get a build failure on i386 allyesconfig with this patch:
>>>
>>> arch/x86/power/built-in.o: In function `swsusp_arch_resume':
>>> (.text+0x14e4): undefined reference to `resume_map_numa_kva'
>>>
>>> It looks trivial to fix up; I assume resume_map_numa_kva() just goes
>>> away like it does in the non-NUMA case, but it would be nice if you
>>> could confirm that.
>>
>> the patches does not seem to complete.
>>
>> at least, it does not remove
>>
>> arch/x86/mm/numa.c:     nd = alloc_remap(nid, nd_size);
>>
>
> ... which will just return NULL because alloc_remap turns into an inline
> just returning NULL.  So the compiled code is correct, but the source
> code is needlessly messy.

yes...

It still left #ifdefCONFIG_HAVE_ARCH_ALLOC_REMAP there.

#ifdef CONFIG_HAVE_ARCH_ALLOC_REMAP
extern void *alloc_remap(int nid, unsigned long size);
#else
static inline void *alloc_remap(int nid, unsigned long size)
{
        return NULL;
}
#endif /* CONFIG_HAVE_ARCH_ALLOC_REMAP */

should throw them all away.

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