From: lijiazi <jqqlijiazi@gmail.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: lijiazi <lijiazi@xiaomi.com>, linux-mm@kvack.org
Subject: [PATCH] mm, page_alloc: print reserved_highatomic info
Date: Wed, 13 Nov 2019 16:59:48 +0800 [thread overview]
Message-ID: <19515f3de2fb6abe66b52e03e4b676a21e82beda.1573634806.git.lijiazi@xiaomi.com> (raw)
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@xiaomi.com>
---
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
reply other threads:[~2019-11-13 9:00 UTC|newest]
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