The patch titled
Subject: samples/damon/prcl: implement schemes setup
has been added to the -mm mm-unstable branch. Its filename is
samples-damon-prcl-implement-schemes-setup.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/samples-damon-prcl-implement-schemes-setup.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: SeongJae Park <sj@xxxxxxxxxx>
Subject: samples/damon/prcl: implement schemes setup
Date: Tue, 10 Dec 2024 13:50:30 -0800
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@xxxxxxxxxx
Signed-off-by: SeongJae Park <sj@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
samples/damon/prcl.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
--- a/samples/damon/prcl.c~samples-damon-prcl-implement-schemes-setup
+++ a/samples/damon/prcl.c
@@ -49,6 +49,7 @@ static int damon_sample_prcl_after_aggre
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);
}
_
Patches currently in -mm which might be from sj@xxxxxxxxxx are
samples-add-a-skeleton-of-a-sample-damon-module-for-working-set-size-estimation.patch
samples-damon-wsse-start-and-stop-damon-as-the-user-requests.patch
samples-damon-wsse-implement-working-set-size-estimation-and-logging.patch
samples-damon-introduce-a-skeleton-of-a-smaple-damon-module-for-proactive-reclamation.patch
samples-damon-prcl-implement-schemes-setup.patch
