The quilt patch titled
Subject: samples/damon/wsse: implement working set size estimation and logging
has been removed from the -mm tree. Its filename was
samples-damon-wsse-implement-working-set-size-estimation-and-logging.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: SeongJae Park <sj@xxxxxxxxxx>
Subject: samples/damon/wsse: implement working set size estimation and logging
Date: Tue, 10 Dec 2024 13:50:28 -0800
Implement the DAMON-based working set size estimation logic. The logic
iterates memory regions in DAMON-generated access pattern snapshot for
every aggregation interval and get the total sum of the size of any region
having one or higher 'nr_accesses' count. That is, it assumes any region
having one or higher 'nr_accesses' to be a part of the working set. The
estimated value is reported to the user by printing it to the kernel log.
Link: https://lkml.kernel.org/r/20241210215030.85675-4-sj@xxxxxxxxxx
Signed-off-by: SeongJae Park <sj@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
samples/damon/wsse.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
--- a/samples/damon/wsse.c~samples-damon-wsse-implement-working-set-size-estimation-and-logging
+++ a/samples/damon/wsse.c
@@ -30,6 +30,23 @@ MODULE_PARM_DESC(enable, "Enable or disa
static struct damon_ctx *ctx;
static struct pid *target_pidp;
+static int damon_sample_wsse_after_aggregate(struct damon_ctx *c)
+{
+ struct damon_target *t;
+
+ damon_for_each_target(t, c) {
+ struct damon_region *r;
+ unsigned long wss = 0;
+
+ damon_for_each_region(r, t) {
+ if (r->nr_accesses > 0)
+ wss += r->ar.end - r->ar.start;
+ }
+ pr_info("wss: %lu\n", wss);
+ }
+ return 0;
+}
+
static int damon_sample_wsse_start(void)
{
struct damon_target *target;
@@ -57,6 +74,7 @@ static int damon_sample_wsse_start(void)
}
target->pid = target_pidp;
+ ctx->callback.after_aggregation = damon_sample_wsse_after_aggregate;
return damon_start(&ctx, 1, true);
}
_
Patches currently in -mm which might be from sj@xxxxxxxxxx are
docs-mm-damon-design-add-monitoring-parameters-tuning-guide.patch
docs-mm-damon-add-an-example-monitoring-intervals-tuning.patch
docs-admin-guide-mm-damon-usage-fix-and-add-missing-damos-filter-sysfs-files-on-files-hierarchy.patch
docs-admin-guide-mm-damon-start-update-snapshot-example.patch
mm-damon-explain-effective-quota-on-kernel-doc-comment.patch
