From: Andrew Morton <akpm@linux-foundation.org>
To: mm-commits@vger.kernel.org,sj@kernel.org,akpm@linux-foundation.org
Subject: + mm-damon-sysfs-implement-filters-directory.patch added to mm-new branch
Date: Mon, 18 May 2026 17:55:29 -0700 [thread overview]
Message-ID: <20260519005530.27417C2BCB7@smtp.kernel.org> (raw)
The patch titled
Subject: mm/damon/sysfs: implement filters directory
has been added to the -mm mm-new branch. Its filename is
mm-damon-sysfs-implement-filters-directory.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-implement-filters-directory.patch
This patch will later appear in the mm-new branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Note, mm-new is a provisional staging ground for work-in-progress
patches, and acceptance into mm-new is a notification for others take
notice and to finish up reviews. Please do not hesitate to respond to
review feedback and post updated versions to replace or incrementally
fixup patches in mm-new.
The mm-new branch of mm.git is not included in linux-next
If a few days of testing in mm-new is successful, the patch will me moved
into mm.git's mm-unstable branch, which is included in linux-next
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*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
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------------------------------------------------------
From: SeongJae Park <sj@kernel.org>
Subject: mm/damon/sysfs: implement filters directory
Date: Mon, 18 May 2026 16:40:59 -0700
Implement a directory for letting users to install data probe filters.
Link: https://lore.kernel.org/20260518234119.97569-12-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
mm/damon/sysfs.c | 65 ++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 64 insertions(+), 1 deletion(-)
--- a/mm/damon/sysfs.c~mm-damon-sysfs-implement-filters-directory
+++ a/mm/damon/sysfs.c
@@ -748,11 +748,41 @@ static const struct kobj_type damon_sysf
};
/*
+ * filters directory
+ */
+
+struct damon_sysfs_filters {
+ struct kobject kobj;
+};
+
+static struct damon_sysfs_filters *damon_sysfs_filters_alloc(void)
+{
+ return kzalloc_obj(struct damon_sysfs_filters);
+}
+
+static void damon_sysfs_filters_release(struct kobject *kobj)
+{
+ kfree(container_of(kobj, struct damon_sysfs_filters, kobj));
+}
+
+static struct attribute *damon_sysfs_filters_attrs[] = {
+ NULL,
+};
+ATTRIBUTE_GROUPS(damon_sysfs_filters);
+
+static const struct kobj_type damon_sysfs_filters_ktype = {
+ .release = damon_sysfs_filters_release,
+ .sysfs_ops = &kobj_sysfs_ops,
+ .default_groups = damon_sysfs_filters_groups,
+};
+
+/*
* probe directory
*/
struct damon_sysfs_probe {
struct kobject kobj;
+ struct damon_sysfs_filters *filters;
};
static struct damon_sysfs_probe *damon_sysfs_probe_alloc(void)
@@ -760,6 +790,30 @@ static struct damon_sysfs_probe *damon_s
return kzalloc_obj(struct damon_sysfs_probe);
}
+static int damon_sysfs_probe_add_dirs(struct damon_sysfs_probe *attr)
+{
+ struct damon_sysfs_filters *filters;
+ int err;
+
+ filters = damon_sysfs_filters_alloc();
+ if (!filters)
+ return -ENOMEM;
+ attr->filters = filters;
+
+ err = kobject_init_and_add(&filters->kobj, &damon_sysfs_filters_ktype,
+ &attr->kobj, "filters");
+ if (err) {
+ kobject_put(&filters->kobj);
+ attr->filters = NULL;
+ }
+ return err;
+}
+
+static void damon_sysfs_probe_rm_dirs(struct damon_sysfs_probe *attr)
+{
+ kobject_put(&attr->filters->kobj);
+}
+
static void damon_sysfs_probe_release(struct kobject *kobj)
{
kfree(container_of(kobj, struct damon_sysfs_probe, kobj));
@@ -797,8 +851,10 @@ static void damon_sysfs_probes_rm_dirs(
struct damon_sysfs_probe **probes_arr = probes->probes_arr;
int i;
- for (i = 0; i < probes->nr; i++)
+ for (i = 0; i < probes->nr; i++) {
+ damon_sysfs_probe_rm_dirs(probes_arr[i]);
kobject_put(&probes_arr[i]->kobj);
+ }
probes->nr = 0;
kfree(probes_arr);
probes->probes_arr = NULL;
@@ -833,6 +889,13 @@ static int damon_sysfs_probes_add_dirs(
if (err) {
kobject_put(&probe->kobj);
damon_sysfs_probes_rm_dirs(probes);
+ return err;
+ }
+
+ err = damon_sysfs_probe_add_dirs(probe);
+ if (err) {
+ kobject_put(&probe->kobj);
+ damon_sysfs_probes_rm_dirs(probes);
return err;
}
_
Patches currently in -mm which might be from sj@kernel.org are
mm-damon-sysfs-schemes-delete-tried-region-in-regions_rmdirs.patch
mm-damon-core-make-charge_addr_from-aware-of-end-address-exclusivity.patch
mm-damon-core-handle-min_region_sz-remaining-quota-as-empty.patch
mm-damon-core-merge-regions-after-applying-damos-schemes.patch
mm-damon-core-introduce-failed-region-quota-charge-ratio.patch
mm-damon-sysfs-schemes-implement-fail_charge_numdenom-files.patch
docs-mm-damon-design-document-fail_charge_numdenom.patch
docs-admin-guide-mm-damon-usage-document-fail_charge_numdenom-files.patch
docs-abi-damon-document-fail_charge_numdenom.patch
mm-damon-tests-core-kunit-test-fail_charge_numdenom-committing.patch
selftests-damon-_damon_sysfs-support-failed-region-quota-charge-ratio.patch
selftests-damon-drgn_dump_damon_status-support-failed-region-quota-charge-ratio.patch
selftests-damon-sysfspy-test-failed-region-quota-charge-ratio.patch
docs-mm-damon-maintainer-profile-add-ai-review-usage-guideline.patch
mm-damon-core-introduce-damon_ctx-paused.patch
mm-damon-sysfs-add-pause-file-under-context-dir.patch
docs-mm-damon-design-update-for-context-pause-resume-feature.patch
docs-admin-guide-mm-damon-usage-update-for-pause-file.patch
docs-abi-damon-update-for-pause-sysfs-file.patch
mm-damon-tests-core-kunit-test-pause-commitment.patch
selftests-damon-_damon_sysfs-support-pause-file-staging.patch
selftests-damon-drgn_dump_damon_status-dump-pause.patch
selftests-damon-sysfspy-check-pause-on-assert_ctx_committed.patch
selftests-damon-sysfspy-pause-damon-before-dumping-status.patch
mm-damon-introduce-damon_set_region_system_rams_default.patch
mm-damon-reclaim-cover-all-system-rams.patch
mm-damon-lru_sort-cover-all-system-rams.patch
mm-damon-core-remove-damon_set_region_biggest_system_ram_default.patch
mm-damon-stat-use-damon_set_region_system_rams_default.patch
docs-admin-guide-mm-damon-reclaim-update-for-entire-memory-monitoring.patch
docs-admin-guide-mm-damon-lru_sort-update-for-entire-memory-monitoring.patch
docs-admin-guide-mm-damon-usage-mark-scheme-filters-sysfs-dir-as-deprecated.patch
docs-abi-damon-mark-schemes-s-filters-deprecated.patch
mm-damon-reclaim-add-autotune_monitoring_intervals-parameter.patch
docs-admin-guide-mm-damon-reclaim-update-for-autotune_monitoring_intervals.patch
mm-damon-stat-add-a-parameter-for-reading-kdamond-pid.patch
docs-admin-guide-mm-damon-stat-document-kdamond_pid-parameter.patch
mm-damon-core-introduce-struct-damon_probe.patch
mm-damon-core-embed-damon_probe-objects-in-damon_ctx.patch
mm-damon-core-introduce-damon_filter.patch
mm-damon-core-commit-probes.patch
mm-damon-core-introduce-damon_region-probe_hits.patch
mm-damon-core-introduce-damon_ops-apply_probes.patch
mm-damon-core-do-data-attributes-monitoring.patch
mm-damon-paddr-support-data-attributes-monitoring.patch
mm-damon-sysfs-implement-probes-dir.patch
mm-damon-sysfs-implement-probe-dir.patch
mm-damon-sysfs-implement-filters-directory.patch
mm-damon-sysfs-implement-filter-dir.patch
mm-damon-sysfs-implement-filter-dir-files.patch
mm-damon-sysfs-setup-probes-on-damon-core-api-parameters.patch
mm-damon-sysfs-schemes-implement-tried_regions-r-probes.patch
mm-damon-sysfs-schemes-implement-probe-dir.patch
mm-damon-sysfs-schemes-implement-probe-hits-file.patch
mm-damon-trace-probe_hits.patch
selftests-damon-sysfssh-test-probes-dir.patch
docs-mm-damon-design-document-data-attributes-monitoring.patch
docs-admin-guide-mm-damon-usage-document-data-attributes-monitoring.patch
mm-damon-core-introduce-damon_filter_type_memcg.patch
mm-damon-paddr-support-damon_filter_type_memcg.patch
mm-damon-sysfs-add-filters-f-path-file.patch
mm-damon-sysfs-schemes-move-memcg_path_to_id-to-sysfs-common.patch
mm-damon-sysfs-setup-damon_filter-memcg_id-from-path.patch
docs-mm-damon-design-update-for-memcg-damon-filter.patch
docs-admin-guide-mm-damon-usage-update-for-memcg-damon-filter.patch
reply other threads:[~2026-05-19 0:55 UTC|newest]
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