Messages in this thread | | | From | Aaron Lu <> | Subject | [PATCH v4 0/3] mm: improve zone->lock scalability | Date | Thu, 1 Mar 2018 14:28:42 +0800 |
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Patch 1/3 is a small cleanup suggested by Matthew Wilcox which doesn't affect scalability or performance; Patch 2/3 moves some code in free_pcppages_bulk() outside of zone->lock and has Mel Gorman's ack; Patch 3/3 uses prefetch in free_pcppages_bulk() outside of zone->lock to speedup page merging under zone->lock but Mel Gorman has some concerns.
For details, please see their changelogs.
v4: Address David Rientjes' comments to not update pcp->count in front of free_pcppages_bulk() in patch 1/3. Reword code comments in patch 2/3 as suggested by David Rientjes.
v3: Added patch 1/3 to update pcp->count inside of free_pcppages_bulk(); Rebase to v4.16-rc2.
v2 & v1: https://lkml.org/lkml/2018/1/23/879
Aaron Lu (3): mm/free_pcppages_bulk: update pcp->count inside mm/free_pcppages_bulk: do not hold lock when picking pages to free mm/free_pcppages_bulk: prefetch buddy while not holding lock
mm/page_alloc.c | 62 +++++++++++++++++++++++++++++++++++++-------------------- 1 file changed, 40 insertions(+), 22 deletions(-)
-- 2.14.3
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