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| author | Liangcai Fan <liangcaifan19@gmail.com> | 2021-11-05 13:40:37 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-11-06 13:30:38 -0700 |
| commit | a6ea8b5b9f1ce3403a1c8516035d653006741e80 (patch) | |
| tree | 2d42504892e23e975caf6adc3062713021869dc5 | |
| parent | 8ca1b5a49885f0c0c486544da46a9e0ac790831d (diff) | |
| download | lwn-a6ea8b5b9f1ce3403a1c8516035d653006741e80.tar.gz lwn-a6ea8b5b9f1ce3403a1c8516035d653006741e80.zip | |
mm/page_alloc.c: show watermark_boost of zone in zoneinfo
min/low/high_wmark_pages(z) is defined as
(z->_watermark[WMARK_MIN/LOW/HIGH] + z->watermark_boost)
If kswapd is frequently woken up due to the increase of
min/low/high_wmark_pages, printing watermark_boost can quickly locate
whether watermark_boost or _watermark[WMARK_MIN/LOW/HIGH] caused
min/low/high_wmark_pages to increase.
Link: https://lkml.kernel.org/r/1632472566-12246-1-git-send-email-liangcaifan19@gmail.com
Signed-off-by: Liangcai Fan <liangcaifan19@gmail.com>
Cc: Chunyan Zhang <zhang.lyra@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/page_alloc.c | 2 | ||||
| -rw-r--r-- | mm/vmstat.c | 2 |
2 files changed, 4 insertions, 0 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index e493d7da2614..6714039cddf4 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -5993,6 +5993,7 @@ void show_free_areas(unsigned int filter, nodemask_t *nodemask) printk(KERN_CONT "%s" " free:%lukB" + " boost:%lukB" " min:%lukB" " low:%lukB" " high:%lukB" @@ -6013,6 +6014,7 @@ void show_free_areas(unsigned int filter, nodemask_t *nodemask) "\n", zone->name, K(zone_page_state(zone, NR_FREE_PAGES)), + K(zone->watermark_boost), K(min_wmark_pages(zone)), K(low_wmark_pages(zone)), K(high_wmark_pages(zone)), diff --git a/mm/vmstat.c b/mm/vmstat.c index 5db54581feab..ae87c90e0b4e 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -1656,6 +1656,7 @@ static void zoneinfo_show_print(struct seq_file *m, pg_data_t *pgdat, } seq_printf(m, "\n pages free %lu" + "\n boost %lu" "\n min %lu" "\n low %lu" "\n high %lu" @@ -1664,6 +1665,7 @@ static void zoneinfo_show_print(struct seq_file *m, pg_data_t *pgdat, "\n managed %lu" "\n cma %lu", zone_page_state(zone, NR_FREE_PAGES), + zone->watermark_boost, min_wmark_pages(zone), low_wmark_pages(zone), high_wmark_pages(zone), |