The patch titled
Subject: mm/damon/sysfs-schemes: use nr_accesses_bp as the source of tried_regions/<N>/nr_accesses
has been added to the -mm mm-unstable branch. Its filename is
mm-damon-sysfs-schemes-use-nr_accesses_bp-as-the-source-of-tried_regions-n-nr_accesses.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-damon-sysfs-schemes-use-nr_accesses_bp-as-the-source-of-tried_regions-n-nr_accesses.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/sysfs-schemes: use nr_accesses_bp as the source of tried_regions/<N>/nr_accesses
Date: Sat, 16 Sep 2023 02:09:38 +0000
DAMON sysfs interface exposes access rate of each region via DAMOS tried
regions directory. For this, the nr_accesses field of the region is used.
DAMOS was actually using nr_accesses in the past, but it uses
nr_accesses_bp now. Use the value that it is really using as the source.
Note that this doesn't expose nr_accesses_bp as is (in basis point), but
after converting it to the natural number by dividing the value by 10,000.
Hence there is no behavioral change from users' perspective.
Link: https://lkml.kernel.org/r/20230916020945.47296-3-sj@xxxxxxxxxx
Signed-off-by: SeongJae Park <sj@xxxxxxxxxx>
Cc: Jonathan Corbet <corbet@xxxxxxx>
Cc: Shuah Khan <shuah@xxxxxxxxxx>
Cc: Steven Rostedt (Google) <rostedt@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/damon/sysfs-schemes.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/damon/sysfs-schemes.c~mm-damon-sysfs-schemes-use-nr_accesses_bp-as-the-source-of-tried_regions-n-nr_accesses
+++ a/mm/damon/sysfs-schemes.c
@@ -31,7 +31,7 @@ static struct damon_sysfs_scheme_region
return NULL;
sysfs_region->kobj = (struct kobject){};
sysfs_region->ar = region->ar;
- sysfs_region->nr_accesses = region->nr_accesses;
+ sysfs_region->nr_accesses = region->nr_accesses_bp / 10000;
sysfs_region->age = region->age;
INIT_LIST_HEAD(&sysfs_region->list);
return sysfs_region;
_
Patches currently in -mm which might be from sj@xxxxxxxxxx are
docs-admin-guide-mm-damon-usage-fixup-missed-ref-keyword.patch
docs-admin-guide-mm-damon-usage-place-debugfs-usage-at-the-bottom.patch
docs-admin-guide-mm-damon-usage-move-debugfs-intro-to-the-bottom-of-the-section.patch
docs-mm-damon-design-explicitly-introduce-nr_accesses.patch
docs-admin-guide-mm-damon-usage-explain-the-format-of-damon_aggregate-tracepoint.patch
docs-mm-damon-design-add-a-section-for-kdamond-and-damon-context.patch
docs-admin-guide-mm-damon-usage-link-design-doc-for-details-of-kdamond-and-context.patch
mm-damon-core-fix-a-comment-about-damon_set_attrs-call-timings.patch
mm-damon-core-add-more-comments-for-nr_accesses.patch
mm-damon-core-remove-duplicated-comment-for-watermarks-based-deactivation.patch
mm-damon-core-remove-struct-target-parameter-from-damon_aggregated-tracepoint.patch
mm-damon-core-add-a-tracepoint-for-damos-apply-target-regions.patch
docs-admin-guide-mm-damon-usage-document-damos_before_apply-tracepoint.patch
mm-damon-core-use-number-of-passed-access-sampling-as-a-timer.patch
mm-damon-core-define-and-use-a-dedicated-function-for-region-access-rate-update.patch
mm-damon-vaddr-call-damon_update_region_access_rate-always.patch
mm-damon-core-implement-a-pseudo-moving-sum-function.patch
mm-damon-core-test-add-a-unit-test-for-damon_moving_sum.patch
mm-damon-core-introduce-nr_accesses_bp.patch
mm-damon-core-use-pseudo-moving-sum-for-nr_accesses_bp.patch
mm-damon-core-skip-updating-nr_accesses_bp-for-each-aggregation-interval.patch
mm-damon-core-mark-damon_moving_sum-as-a-static-function.patch
mm-damon-core-make-damos-uses-nr_accesses_bp-instead-of-nr_accesses.patch
mm-damon-sysfs-schemes-use-nr_accesses_bp-as-the-source-of-tried_regions-n-nr_accesses.patch
mm-damon-core-use-nr_accesses_bp-as-a-source-of-damos_before_apply-tracepoint.patch
mm-damon-core-implement-scheme-specific-apply-interval.patch
docs-mm-damon-design-document-damos-apply-intervals.patch
mm-damon-sysfs-schemes-support-damos-apply-interval.patch
selftests-damon-sysfs-test-damos-apply-intervals.patch
docs-admin-guide-mm-damon-usage-update-for-damos-apply-intervals.patch
docs-abi-damon-update-for-damos-apply-intervals.patch
