From 15e01f3912a7b9e7e6757f03273bc79e0094b7fc Mon Sep 17 00:00:00 2001 From: SeongJae Park Date: Tue, 10 Dec 2024 13:50:30 -0800 Subject: [PATCH] samples/damon/prcl: implement schemes setup Implement a proactive cold memory regions reclaiming logic of prcl sample module using DAMOS. The logic treats memory regions that not accessed at all for five or more seconds as cold, and reclaim those as soon as found. Link: https://lkml.kernel.org/r/20241210215030.85675-6-sj@kernel.org Signed-off-by: SeongJae Park Signed-off-by: Andrew Morton --- samples/damon/prcl.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/samples/damon/prcl.c b/samples/damon/prcl.c index b34b9bfed5323..c3acbdab7a620 100644 --- a/samples/damon/prcl.c +++ b/samples/damon/prcl.c @@ -49,6 +49,7 @@ static int damon_sample_prcl_after_aggregate(struct damon_ctx *c) static int damon_sample_prcl_start(void) { struct damon_target *target; + struct damos *scheme; pr_info("start\n"); @@ -75,6 +76,25 @@ static int damon_sample_prcl_start(void) ctx->callback.after_aggregation = damon_sample_prcl_after_aggregate; + scheme = damon_new_scheme( + &(struct damos_access_pattern) { + .min_sz_region = PAGE_SIZE, + .max_sz_region = ULONG_MAX, + .min_nr_accesses = 0, + .max_nr_accesses = 0, + .min_age_region = 50, + .max_age_region = UINT_MAX}, + DAMOS_PAGEOUT, + 0, + &(struct damos_quota){}, + &(struct damos_watermarks){}, + NUMA_NO_NODE); + if (!scheme) { + damon_destroy_ctx(ctx); + return -ENOMEM; + } + damon_set_schemes(ctx, &scheme, 1); + return damon_start(&ctx, 1, true); } -- 2.50.1