* [patch 101/158] mm/page_alloc.c: print reserved_highatomic info
@ 2019-12-01 1:55 akpm
0 siblings, 0 replies; only message in thread
From: akpm @ 2019-12-01 1:55 UTC (permalink / raw)
To: akpm, jqqlijiazi, lijiazi, linux-mm, mgorman, mm-commits, torvalds
From: lijiazi <jqqlijiazi@gmail.com>
Subject: mm/page_alloc.c: print reserved_highatomic info
Print 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. Printing this value can help analyze memory
allocaction failure issues.
Link: http://lkml.kernel.org/r/19515f3de2fb6abe66b52e03e4b676a21e82beda.1573634806.git.lijiazi@xiaomi.com
Signed-off-by: lijiazi <lijiazi@xiaomi.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
mm/page_alloc.c | 2 ++
1 file changed, 2 insertions(+)
--- a/mm/page_alloc.c~mm-page_alloc-print-reserved_highatomic-info
+++ a/mm/page_alloc.c
@@ -5354,6 +5354,7 @@ void show_free_areas(unsigned int filter
" 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
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)),
_
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2019-12-01 1:55 [patch 101/158] mm/page_alloc.c: print reserved_highatomic info akpm
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