From 987ffa5a3858bee448dc791cf6f596790aea52a8 Mon Sep 17 00:00:00 2001 From: Huan Yang Date: Wed, 20 Sep 2023 09:57:27 +0800 Subject: mm/damon/core: remove unnecessary si_meminfo invoke. si_meminfo() will read and assign more info not just free/ram pages. For just DAMOS_WMARK_FREE_MEM_RATE use, only get free and ram pages is ok to save cpu. Link: https://lkml.kernel.org/r/20230920015727.4482-1-link@vivo.com Signed-off-by: Huan Yang Reviewed-by: SeongJae Park Signed-off-by: Andrew Morton --- mm/damon/core.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'mm/damon') diff --git a/mm/damon/core.c b/mm/damon/core.c index 5eb649bd002f..9f4f7c378cf3 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -1326,12 +1326,10 @@ static bool kdamond_need_stop(struct damon_ctx *ctx) static unsigned long damos_wmark_metric_value(enum damos_wmark_metric metric) { - struct sysinfo i; - switch (metric) { case DAMOS_WMARK_FREE_MEM_RATE: - si_meminfo(&i); - return i.freeram * 1000 / i.totalram; + return global_zone_page_state(NR_FREE_PAGES) * 1000 / + totalram_pages(); default: break; } -- cgit v1.2.3