@@ -5980,6 +5980,7 @@ void show_free_areas(unsigned int filter, nodemask_t *nodemask)
printk(KERN_CONT
"%s"
" free:%lukB"
+ " boost:%lukB"
" min:%lukB"
" low:%lukB"
" high:%lukB"
@@ -6000,6 +6001,7 @@ 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)),
@@ -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),
min/low/high_wmark_pages(z) is defined as (z->_watermark[WMARK_MIN/LOW/HIGH] + z->watermark_boost). If kswapd is frequently waked 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. Signed-off-by: Liangcai Fan <liangcaifan19@gmail.com> --- mm/page_alloc.c | 2 ++ mm/vmstat.c | 2 ++ 2 files changed, 4 insertions(+)