Pintf nr_reserved_highatomic in show_free_areas, because when alloc_harder is false, this value will be subtracted from the free_pages in __zone_watermark_ok. Print this value can help analyze mem alloc fail issue. Signed-off-by: lijiazi <lijiazi@xxxxxxxxxx> --- mm/page_alloc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index f391c0c..8b78a93 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -5354,6 +5354,7 @@ void show_free_areas(unsigned int filter, nodemask_t *nodemask) " min:%lukB" " low:%lukB" " high:%lukB" + " reserved_highatomic:%luKB" " active_anon:%lukB" " inactive_anon:%lukB" " active_file:%lukB" @@ -5375,6 +5376,7 @@ void show_free_areas(unsigned int filter, nodemask_t *nodemask) K(min_wmark_pages(zone)), K(low_wmark_pages(zone)), K(high_wmark_pages(zone)), + K(zone->nr_reserved_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)), -- 2.7.4
