From 8e99031f90882dcac10f65294a5428077fd4dd8d Mon Sep 17 00:00:00 2001 From: gaoxu Date: Wed, 12 Nov 2025 14:40:03 +0800 Subject: [PATCH] mm: add nr_free_highatomic in show_free_areas mainline inclusion from mainline-v6.16-rc1 commit 4f219913c1368a372b07832451cb86ea3a1df31c category: other bugzilla: https://gitee.com/openeuler/kernel/issues/ID65M0 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f219913c1368a372b07832451cb86ea3a1df31c -------------------------------- commit c928807f6f6b6("mm/page_alloc: keep track of free highatomic") adds a new variable nr_free_highatomic, which is useful for analyzing low mem issues. add nr_free_highatomic in show_free_areas. Signed-off-by: gao xu Link: https://lkml.kernel.org/r/d92eeff74f7a4578a14ac777cfe3603a@honor.com Acked-by: David Hildenbrand Reviewed-by: Barry Song Acked-by: David Rientjes Reviewed-by: Anshuman Khandual Cc: Mike Rapoport Cc: Suren Baghdasaryan Cc: Yu Zhao Signed-off-by: Andrew Morton Signed-off-by: Jinjiang Tu --- mm/show_mem.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/mm/show_mem.c b/mm/show_mem.c index a5608c697d15..23cb66ac712c 100644 --- a/mm/show_mem.c +++ b/mm/show_mem.c @@ -314,6 +314,7 @@ static void show_free_areas(unsigned int filter, nodemask_t *nodemask, int max_z " low:%lukB" " high:%lukB" " reserved_highatomic:%luKB" + " free_highatomic:%luKB" " active_anon:%lukB" " inactive_anon:%lukB" " active_file:%lukB" @@ -335,6 +336,7 @@ static void show_free_areas(unsigned int filter, nodemask_t *nodemask, int max_z K(low_wmark_pages(zone)), K(high_wmark_pages(zone)), K(zone->nr_reserved_highatomic), + K(zone->nr_free_highatomic), K(zone_page_state(zone, NR_ZONE_ACTIVE_ANON)), K(zone_page_state(zone, NR_ZONE_INACTIVE_ANON)), K(zone_page_state(zone, NR_ZONE_ACTIVE_FILE)), -- Gitee