diff options
author | Mel Gorman <mel@csn.ul.ie> | 2009-01-06 17:38:54 -0500 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-06 18:58:58 -0500 |
commit | 3340289ddf29ca75c3acfb3a6b72f234b2f74d5c (patch) | |
tree | d5da94eb1cb0146160fcb0e7aa161bfa5b6ac807 /arch/powerpc/include/asm | |
parent | 08fba69986e20c1c9e5fe2e6064d146cc4f42480 (diff) |
mm: report the MMU pagesize in /proc/pid/smaps
The KernelPageSize entry in /proc/pid/smaps is the pagesize used by the
kernel to back a VMA. This matches the size used by the MMU in the
majority of cases. However, one counter-example occurs on PPC64 kernels
whereby a kernel using 64K as a base pagesize may still use 4K pages for
the MMU on older processor. To distinguish, this patch reports
MMUPageSize as the pagesize used by the MMU in /proc/pid/smaps.
Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Cc: "KOSAKI Motohiro" <kosaki.motohiro@jp.fujitsu.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/powerpc/include/asm')
-rw-r--r-- | arch/powerpc/include/asm/hugetlb.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h index 26f0d0ab27a..b1dafb6a974 100644 --- a/arch/powerpc/include/asm/hugetlb.h +++ b/arch/powerpc/include/asm/hugetlb.h | |||
@@ -18,6 +18,12 @@ pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, | |||
18 | pte_t *ptep); | 18 | pte_t *ptep); |
19 | 19 | ||
20 | /* | 20 | /* |
21 | * The version of vma_mmu_pagesize() in arch/powerpc/mm/hugetlbpage.c needs | ||
22 | * to override the version in mm/hugetlb.c | ||
23 | */ | ||
24 | #define vma_mmu_pagesize vma_mmu_pagesize | ||
25 | |||
26 | /* | ||
21 | * If the arch doesn't supply something else, assume that hugepage | 27 | * If the arch doesn't supply something else, assume that hugepage |
22 | * size aligned regions are ok without further preparation. | 28 | * size aligned regions are ok without further preparation. |
23 | */ | 29 | */ |