| Date | Mon, 07 Oct 2013 11:12:26 -0400 | From | Rik van Riel <> | Subject | Re: [PATCH 10/63] mm: Do not flush TLB during protection change if !pte_present && !migration_entry |
| |
On 10/07/2013 06:28 AM, Mel Gorman wrote: > NUMA PTE scanning is expensive both in terms of the scanning itself and > the TLB flush if there are any updates. Currently non-present PTEs are > accounted for as an update and incurring a TLB flush where it is only > necessary for anonymous migration entries. This patch addresses the > problem and should reduce TLB flushes. > > Signed-off-by: Mel Gorman <mgorman@suse.de>
Reviewed-by: Rik van Riel <riel@redhat.com>
-- All rights reversed
|