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x86: set_highmem_pages_init() cleanup, #2

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Impact: cleanup

The zones are set up at this stage so there's a highmem zone
available even for the UMA case.

The only difference there is that for machines that have
CONFIG_HIGHMEM enabled but don't have any highmem available,
->zone_start_pfn is zero whereas highstart_pfn is non-zero).

The field is left zeroed because of the !size test in
free_area_init_core() but shouldn't be a problem because
add_highpages_with_active_regions() handles empty ranges just
fine.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Mel Gorman <mel@csn.ul.ie>
LKML-Reference: <1236154567.29024.23.camel@penberg-laptop>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Pekka Enberg 2009-03-04 10:16:07 +02:00 committed by Ingo Molnar
parent 540aca06b7
commit 6298e719cf
1 changed files with 0 additions and 9 deletions
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9
arch/x86/mm/highmem_32.c
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@ -158,7 +158,6 @@ EXPORT_SYMBOL(kunmap);
EXPORT_SYMBOL(kmap_atomic);
EXPORT_SYMBOL(kunmap_atomic);
#ifdef CONFIG_NUMA
void __init set_highmem_pages_init(void)
{
struct zone *zone;
@ -182,11 +181,3 @@ void __init set_highmem_pages_init(void)
}
totalram_pages += totalhigh_pages;
}
#else
void __init set_highmem_pages_init(void)
{
add_highpages_with_active_regions(0, highstart_pfn, highend_pfn);
totalram_pages += totalhigh_pages;
}
#endif /* CONFIG_NUMA */