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mm/damon/core: remove unnecessary si_meminfo invoke.

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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 <link@vivo.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Huan Yang 2023-09-20 09:57:27 +08:00 committed by Andrew Morton
parent 8c9ae56dc7
commit 987ffa5a38
1 changed files with 2 additions and 4 deletions
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6
mm/damon/core.c
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@ -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;
}