path: root/virt
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authorAndrea Arcangeli <aarcange@redhat.com>2011-01-13 15:47:19 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2011-01-13 17:32:48 -0800
commit29ad768cfc08611a4c1070d0f13f82eeea2bac7b (patch)
treea1cc7326d3a12bed79071559e2d4e8d43fb14814 /virt
parentthp: khugepaged: make khugepaged aware about madvise (diff)
thp: KSM on THP
This makes KSM full operational with THP pages. Subpages are scanned while the hugepage is still in place and delivering max cpu performance, and only if there's a match and we're going to deduplicate memory, the single hugepages with the subpage match is split. There will be no false sharing between ksmd and khugepaged. khugepaged won't collapse 2m virtual regions with KSM pages inside. ksmd also should only split pages when the checksum matches and we're likely to split an hugepage for some long living ksm page (usual ksm heuristic to avoid sharing pages that get de-cowed). Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'virt')
0 files changed, 0 insertions, 0 deletions