]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commit
mm: report the MMU pagesize in /proc/pid/smaps
authorMel Gorman <mel@csn.ul.ie>
Tue, 6 Jan 2009 22:38:54 +0000 (14:38 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Tue, 6 Jan 2009 23:58:58 +0000 (15:58 -0800)
commit3340289ddf29ca75c3acfb3a6b72f234b2f74d5c
treed5da94eb1cb0146160fcb0e7aa161bfa5b6ac807
parent08fba69986e20c1c9e5fe2e6064d146cc4f42480
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>
arch/powerpc/include/asm/hugetlb.h
arch/powerpc/mm/hugetlbpage.c
fs/proc/task_mmu.c
include/linux/hugetlb.h
mm/hugetlb.c