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x86: compile pat debugfs interface only if CONFIG_X86_PAT is set

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Recently I've run a kernel w/o PAT support and wondered why there was
a file "x86/pat_memtype_list" in debugfs. Of course it's empty if PAT
is disabled ... so just get rid of this interface if PAT is disabled.

Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Andreas Herrmann 2008-08-06 16:23:08 +02:00 committed by Ingo Molnar
parent 10fec20ef5
commit 012f09e794
1 changed files with 2 additions and 2 deletions
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4
arch/x86/mm/pat.c
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@ -492,7 +492,7 @@ void unmap_devmem(unsigned long pfn, unsigned long size, pgprot_t vma_prot)
free_memtype(addr, addr + size);
}
#if defined(CONFIG_DEBUG_FS)
#if defined(CONFIG_DEBUG_FS) && defined(CONFIG_X86_PAT)
/* get Nth element of the linked list */
static struct memtype *memtype_get_idx(loff_t pos)
@ -576,4 +576,4 @@ static int __init pat_memtype_list_init(void)
late_initcall(pat_memtype_list_init);
#endif /* CONFIG_DEBUG_FS */
#endif /* CONFIG_DEBUG_FS && CONFIG_X86_PAT */