Messages in this thread Patch in this message | | | Date | Thu, 4 Jun 2015 21:04:45 +0800 | From | Xishi Qiu <> | Subject | [RFC PATCH 11/12] mm: add the PCP interface |
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Add the PCP interface for address range mirroring feature.
Signed-off-by: Xishi Qiu <qiuxishi@huawei.com> --- mm/page_alloc.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 0fb55288..cf3b7cb 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1401,11 +1401,16 @@ static int rmqueue_bulk(struct zone *zone, unsigned int order, unsigned long count, struct list_head *list, int migratetype, bool cold) { - int i; + int i, mt; spin_lock(&zone->lock); for (i = 0; i < count; ++i) { - struct page *page = __rmqueue(zone, order, migratetype); + struct page *page; + + if (is_migrate_mirror(migratetype)) + page = __rmqueue_smallest(zone, order, migratetype); + else + page = __rmqueue(zone, order, migratetype); if (unlikely(page == NULL)) break; @@ -1423,9 +1428,14 @@ static int rmqueue_bulk(struct zone *zone, unsigned int order, else list_add_tail(&page->lru, list); list = &page->lru; - if (is_migrate_cma(get_freepage_migratetype(page))) + + mt = get_freepage_migratetype(page); + if (is_migrate_cma(mt)) __mod_zone_page_state(zone, NR_FREE_CMA_PAGES, -(1 << order)); + if (is_migrate_mirror(mt)) + __mod_zone_page_state(zone, NR_FREE_MIRROR_PAGES, + -(1 << order)); } __mod_zone_page_state(zone, NR_FREE_PAGES, -(i << order)); spin_unlock(&zone->lock); -- 2.0.0
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