From 21e330fc632d6a288f73de48045b782cc51d501a Mon Sep 17 00:00:00 2001 From: Shakeel Butt Date: Wed, 3 Jun 2020 16:03:19 -0700 Subject: [PATCH] mm: swap: memcg: fix memcg stats for huge pages The commit 2262185c5b28 ("mm: per-cgroup memory reclaim stats") added PGLAZYFREE, PGACTIVATE & PGDEACTIVATE stats for cgroups but missed couple of places and PGLAZYFREE missed huge page handling. Fix that. Also for PGLAZYFREE use the irq-unsafe function to update as the irq is already disabled. Fixes: 2262185c5b28 ("mm: per-cgroup memory reclaim stats") Signed-off-by: Shakeel Butt Signed-off-by: Andrew Morton Acked-by: Johannes Weiner Link: http://lkml.kernel.org/r/20200527182947.251343-1-shakeelb@google.com Signed-off-by: Linus Torvalds --- mm/swap.c | 21 ++++++++++++++++----- 1 file changed, 16 insertions(+), 5 deletions(-) diff --git a/mm/swap.c b/mm/swap.c index fa07d31..dbcab84 100644 --- a/mm/swap.c +++ b/mm/swap.c @@ -320,6 +320,7 @@ static void __activate_page(struct page *page, struct lruvec *lruvec, { if (PageLRU(page) && !PageActive(page) && !PageUnevictable(page)) { int lru = page_lru_base_type(page); + int nr_pages = hpage_nr_pages(page); del_page_from_lru_list(page, lruvec, lru); SetPageActive(page); @@ -327,7 +328,9 @@ static void __activate_page(struct page *page, struct lruvec *lruvec, add_page_to_lru_list(page, lruvec, lru); trace_mm_lru_activate(page); - __count_vm_events(PGACTIVATE, hpage_nr_pages(page)); + __count_vm_events(PGACTIVATE, nr_pages); + __count_memcg_events(lruvec_memcg(lruvec), PGACTIVATE, + nr_pages); } } @@ -565,8 +568,11 @@ static void lru_deactivate_file_fn(struct page *page, struct lruvec *lruvec, __count_vm_events(PGROTATED, nr_pages); } - if (active) + if (active) { __count_vm_events(PGDEACTIVATE, nr_pages); + __count_memcg_events(lruvec_memcg(lruvec), PGDEACTIVATE, + nr_pages); + } } static void lru_deactivate_fn(struct page *page, struct lruvec *lruvec, @@ -574,13 +580,16 @@ static void lru_deactivate_fn(struct page *page, struct lruvec *lruvec, { if (PageLRU(page) && PageActive(page) && !PageUnevictable(page)) { int lru = page_lru_base_type(page); + int nr_pages = hpage_nr_pages(page); del_page_from_lru_list(page, lruvec, lru + LRU_ACTIVE); ClearPageActive(page); ClearPageReferenced(page); add_page_to_lru_list(page, lruvec, lru); - __count_vm_events(PGDEACTIVATE, hpage_nr_pages(page)); + __count_vm_events(PGDEACTIVATE, nr_pages); + __count_memcg_events(lruvec_memcg(lruvec), PGDEACTIVATE, + nr_pages); } } @@ -590,6 +599,7 @@ static void lru_lazyfree_fn(struct page *page, struct lruvec *lruvec, if (PageLRU(page) && PageAnon(page) && PageSwapBacked(page) && !PageSwapCache(page) && !PageUnevictable(page)) { bool active = PageActive(page); + int nr_pages = hpage_nr_pages(page); del_page_from_lru_list(page, lruvec, LRU_INACTIVE_ANON + active); @@ -603,8 +613,9 @@ static void lru_lazyfree_fn(struct page *page, struct lruvec *lruvec, ClearPageSwapBacked(page); add_page_to_lru_list(page, lruvec, LRU_INACTIVE_FILE); - __count_vm_events(PGLAZYFREE, hpage_nr_pages(page)); - count_memcg_page_event(page, PGLAZYFREE); + __count_vm_events(PGLAZYFREE, nr_pages); + __count_memcg_events(lruvec_memcg(lruvec), PGLAZYFREE, + nr_pages); } } -- 2.7.4