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Commit 012f09e7 authored by Andreas Herrmann's avatar Andreas Herrmann Committed by Ingo Molnar
Browse files

x86: compile pat debugfs interface only if CONFIG_X86_PAT is set 



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: default avatarAndreas Herrmann <andreas.herrmann3@amd.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 10fec20e

arch/x86/mm/pat.c

+2 −2
Original line number Diff line number Diff line
@@ -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 */