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| author |   Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2016-07-13 15:06:43 +0530 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2016-08-01 11:15:13 +1000 |
| commit | 5491ae7b6f48499b8892822cff371746f0b4102f (patch) | |
| tree | a8bb6c61ba9276e1b64d4ad2ef1b6c10b8508929 /arch/powerpc/mm/hugetlbpage-radix.c | |
| parent | powerpc/mm/radix/hugetlb: Add helper for finding page size from hstate (diff) | |
| download | linux-dev-5491ae7b6f48499b8892822cff371746f0b4102f.tar.xz linux-dev-5491ae7b6f48499b8892822cff371746f0b4102f.zip | |
powerpc/mm/hugetlb: Add flush_hugetlb_tlb_range
Some archs like ppc64 need to do special things when flushing tlb for
hugepage. Add a new helper to flush hugetlb tlb range. This helps us to
avoid flushing the entire tlb mapping for the pid.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/mm/hugetlbpage-radix.c')
| -rw-r--r-- | arch/powerpc/mm/hugetlbpage-radix.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/powerpc/mm/hugetlbpage-radix.c b/arch/powerpc/mm/hugetlbpage-radix.c index 1eca0deaf89b..35254a678456 100644 --- a/arch/powerpc/mm/hugetlbpage-radix.c +++ b/arch/powerpc/mm/hugetlbpage-radix.c @@ -25,6 +25,16 @@ void radix__local_flush_hugetlb_page(struct vm_area_struct *vma, unsigned long v radix__local_flush_tlb_page_psize(vma->vm_mm, vmaddr, psize); } +void radix__flush_hugetlb_tlb_range(struct vm_area_struct *vma, unsigned long start, + unsigned long end) +{ + int psize; + struct hstate *hstate = hstate_file(vma->vm_file); + + psize = hstate_get_psize(hstate); + radix__flush_tlb_range_psize(vma->vm_mm, start, end, psize); +} + /* * A vairant of hugetlb_get_unmapped_area doing topdown search * FIXME!! should we do as x86 does or non hugetlb area does ? |