The patch titled
Subject: mm/damon/core: implement per-scheme ops-handled filter-passed bytes stat
has been added to the -mm mm-unstable branch. Its filename is
mm-damon-core-implement-per-scheme-ops-handled-filter-passed-bytes-stat.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-damon-core-implement-per-scheme-ops-handled-filter-passed-bytes-stat.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: mm/damon/core: implement per-scheme ops-handled filter-passed bytes stat
Date: Mon, 6 Jan 2025 11:33:52 -0800
Implement a new per-DAMOS scheme statistic field, namely
sz_ops_filter_passed, using the changed damon_operations->apply_scheme()
interface. It counts total bytes of memory that given DAMOS action tried
to be applied, and passed the operations layer handled region-internal
filters of the scheme. DAMON API users can access it using DAMON-internal
safe access features such as damon_call() and/or damos_walk().
Link: https://lkml.kernel.org/r/20250106193401.109161-8-sj@xxxxxxxxxx
Signed-off-by: SeongJae Park <sj@xxxxxxxxxx>
Cc: Jonathan Corbet <corbet@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/damon.h | 3 +++
mm/damon/core.c | 6 ++++--
2 files changed, 7 insertions(+), 2 deletions(-)
--- a/include/linux/damon.h~mm-damon-core-implement-per-scheme-ops-handled-filter-passed-bytes-stat
+++ a/include/linux/damon.h
@@ -286,6 +286,8 @@ struct damos_watermarks {
* @sz_tried: Total size of regions that the scheme is tried to be applied.
* @nr_applied: Total number of regions that the scheme is applied.
* @sz_applied: Total size of regions that the scheme is applied.
+ * @sz_ops_filter_passed:
+ * Total bytes that passed ops layer-handled DAMOS filters.
* @qt_exceeds: Total number of times the quota of the scheme has exceeded.
*
* "Tried an action to a region" in this context means the DAMOS core logic
@@ -310,6 +312,7 @@ struct damos_stat {
unsigned long sz_tried;
unsigned long nr_applied;
unsigned long sz_applied;
+ unsigned long sz_ops_filter_passed;
unsigned long qt_exceeds;
};
--- a/mm/damon/core.c~mm-damon-core-implement-per-scheme-ops-handled-filter-passed-bytes-stat
+++ a/mm/damon/core.c
@@ -1362,13 +1362,15 @@ static bool damos_skip_charged_region(st
}
static void damos_update_stat(struct damos *s,
- unsigned long sz_tried, unsigned long sz_applied)
+ unsigned long sz_tried, unsigned long sz_applied,
+ unsigned long sz_ops_filter_passed)
{
s->stat.nr_tried++;
s->stat.sz_tried += sz_tried;
if (sz_applied)
s->stat.nr_applied++;
s->stat.sz_applied += sz_applied;
+ s->stat.sz_ops_filter_passed += sz_ops_filter_passed;
}
static bool __damos_filter_out(struct damon_ctx *ctx, struct damon_target *t,
@@ -1586,7 +1588,7 @@ static void damos_apply_scheme(struct da
r->age = 0;
update_stat:
- damos_update_stat(s, sz, sz_applied);
+ damos_update_stat(s, sz, sz_applied, sz_ops_filter_passed);
}
static void damon_do_apply_schemes(struct damon_ctx *c,
_
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
replace-free-hugepage-folios-after-migration-fix-2.patch
docs-admin-guide-mm-damon-usage-remove-damon-debugfs-interface-documentation.patch
docs-mm-damon-design-update-for-removal-of-damon-debugfs-interface.patch
selftests-damon-config-remove-configs-for-damon-debugfs-interface-selftests.patch
selftests-damon-remove-tests-for-damon-debugfs-interface.patch
kunit-configs-remove-configs-for-damon-debugfs-interface-tests.patch
mm-damon-remove-damon-debugfs-interface-kunit-tests.patch
mm-damon-remove-damon-debugfs-interface.patch
mm-damon-sysfs-schemes-remove-unnecessary-schemes-existence-check-in-damon_sysfs_schemes_clear_regions.patch
mm-damon-sysfs-handle-clear_schemes_tried_regions-from-damon-sysfs-context.patch
mm-damon-core-introduce-damon_call.patch
mm-damon-sysfs-use-damon_call-for-update_schemes_stats.patch
mm-damon-sysfs-use-damon_call-for-commit_schemes_quota_goals.patch
mm-damon-sysfs-use-damon_call-for-update_schemes_effective_quotas.patch
mm-damon-core-implement-damos_walk.patch
docs-mm-damon-design-document-damos-regions-walking.patch
mm-damon-sysfs-use-damos_walk-for-update_schemes_tried_bytesregions.patch
mm-damon-sysfs-remove-unused-code-for-schemes-tried-regions-update.patch
mm-damon-clarify-trying-vs-applying-on-damos_stat-kernel-doc-comment.patch
docs-mm-damon-design-add-statistics-section.patch
docs-admin-guide-mm-damon-usage-link-damos-stat-design-doc.patch
mm-damon-ask-apply_scheme-to-report-filter-passed-region-internal-bytes.patch
mm-damon-paddr-report-filter-passed-bytes-back-for-normal-actions.patch
mm-damon-paddr-report-filter-passed-bytes-back-for-damos_stat-action.patch
mm-damon-core-implement-per-scheme-ops-handled-filter-passed-bytes-stat.patch
mm-damon-syfs-schemes-implement-per-scheme-filter-passed-bytes-stat.patch
docs-mm-damon-design-document-sz_ops_filter_passed.patch
docs-admin-guide-mm-damon-usage-document-sz_ops_filter_passed.patch
docs-abi-damon-document-per-scheme-filter-passed-bytes-stat-file.patch
mm-damon-core-pass-per-region-filter-passed-bytes-to-damos_walk_control-walk_fn.patch
mm-damon-sysfs-schemes-expose-per-region-filter-passed-bytes.patch
docs-mm-damon-design-document-per-region-sz_filter_passed-stat.patch
docs-admin-guide-mm-damon-usage-document-sz_filtered_out-of-scheme-tried-region-directories.patch
docs-abi-damon-document-per-region-damos-filter-passed-bytes-stat-file.patch
