diff options
| author | Huan Yang <link@vivo.com> | 2023-09-20 09:57:27 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-10-16 15:44:38 -0700 |
| commit | 987ffa5a3858bee448dc791cf6f596790aea52a8 (patch) | |
| tree | e7284c9e20fc9753eccfb0d8eeb490171ca870f8 | |
| parent | 8c9ae56dc73b5ae48a14000b96292bd4f2aeb710 (diff) | |
| download | lwn-987ffa5a3858bee448dc791cf6f596790aea52a8.tar.gz lwn-987ffa5a3858bee448dc791cf6f596790aea52a8.zip | |
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 <link@vivo.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| -rw-r--r-- | mm/damon/core.c | 6 |
1 files changed, 2 insertions, 4 deletions
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; } |