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x86: PAT: move track untrack pfnmap stubs to asm-generic

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Impact: Cleanup and branch hints only.

Move the track and untrack pfn stub routines from memory.c to asm-generic.
Also add unlikely to pfnmap related calls in fork and exit path.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
venkatesh.pallipadi@intel.com 2008-12-19 13:47:29 -08:00 • committed by H. Peter Anvin
parent 982d789ab7
commit 34801ba9bf
4 changed files with 51 additions and 57 deletions
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6
include/linux/mm.h
View file

@ -163,12 +163,6 @@ static inline int is_pfn_mapping(struct vm_area_struct *vma)
return (vma->vm_flags & VM_PFNMAP);
}
extern int track_pfn_vma_new(struct vm_area_struct *vma, pgprot_t prot,
unsigned long pfn, unsigned long size);
extern int track_pfn_vma_copy(struct vm_area_struct *vma);
extern void untrack_pfn_vma(struct vm_area_struct *vma, unsigned long pfn,
unsigned long size);
/*
* vm_fault is filled by the the pagefault handler and passed to the vma's
* ->fault function. The vma's ->fault is responsible for returning a bitmask