+ mm-damon-core-commit-probes.patch added to mm-new branch

+ mm-damon-core-commit-probes.patch added to mm-new branch

[Andrew Morton]

The patch titled
     Subject: mm/damon/core: commit probes
has been added to the -mm mm-new branch.  Its filename is
     mm-damon-core-commit-probes.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-commit-probes.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

Before you just go and hit "reply", please:
   a) Consider who else should be cc'ed
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*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***

The -mm tree is included into linux-next via various
branches at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there most days

------------------------------------------------------
From: SeongJae Park <sj@kernel.org>
Subject: mm/damon/core: commit probes
Date: Mon, 18 May 2026 16:40:52 -0700

Update damon_commit_ctx() to commit installed data probes, too.

Link: https://lore.kernel.org/20260518234119.97569-5-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/core.c |  104 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 104 insertions(+)

--- a/mm/damon/core.c~mm-damon-core-commit-probes
+++ a/mm/damon/core.c
@@ -133,11 +133,34 @@ void damon_add_filter(struct damon_probe
 	list_add_tail(&f->list, &p->filters);
 }
 
+static void damon_del_filter(struct damon_filter *f)
+{
+	list_del(&f->list);
+}
+
 static void damon_free_filter(struct damon_filter *f)
 {
 	kfree(f);
 }
 
+static void damon_destroy_filter(struct damon_filter *f)
+{
+	damon_del_filter(f);
+	damon_free_filter(f);
+}
+
+static struct damon_filter *damon_nth_filter(int n, struct damon_probe *p)
+{
+	struct damon_filter *f;
+	int i = 0;
+
+	damon_for_each_filter(f, p) {
+		if (i++ == n)
+			return f;
+	}
+	return NULL;
+}
+
 struct damon_probe *damon_new_probe(void)
 {
 	struct damon_probe *p;
@@ -175,6 +198,18 @@ static void damon_destroy_probe(struct d
 	damon_free_probe(p);
 }
 
+static struct damon_probe *damon_nth_probe(int n, struct damon_ctx *ctx)
+{
+	struct damon_probe *p;
+	int i = 0;
+
+	damon_for_each_probe(p, ctx) {
+		if (i++ == n)
+			return p;
+	}
+	return NULL;
+}
+
 #ifdef CONFIG_DAMON_DEBUG_SANITY
 static void damon_verify_new_region(unsigned long start, unsigned long end)
 {
@@ -1386,6 +1421,72 @@ static int damon_commit_targets(
 	return 0;
 }
 
+static void damon_commit_filter(struct damon_filter *dst,
+		struct damon_filter *src)
+{
+	dst->type = src->type;
+	dst->matching = src->matching;
+	dst->allow = src->allow;
+}
+
+static int damon_commit_filters(struct damon_probe *dst,
+		struct damon_probe *src)
+{
+	struct damon_filter *dst_filter, *next, *src_filter, *new_filter;
+	int i = 0, j = 0;
+
+	damon_for_each_filter_safe(dst_filter, next, dst) {
+		src_filter = damon_nth_filter(i++, src);
+		if (src_filter)
+			damon_commit_filter(dst_filter, src_filter);
+		else
+			damon_destroy_filter(dst_filter);
+	}
+
+	damon_for_each_filter_safe(src_filter, next, src) {
+		if (j++ < i)
+			continue;
+
+		new_filter = damon_new_filter(src_filter->type,
+				src_filter->matching, src_filter->allow);
+		if (!new_filter)
+			return -ENOMEM;
+		damon_add_filter(dst, new_filter);
+	}
+	return 0;
+}
+
+static int damon_commit_probes(struct damon_ctx *dst, struct damon_ctx *src)
+{
+	struct damon_probe *dst_probe, *next, *src_probe, *new_probe;
+	int i = 0, j = 0, err;
+
+	damon_for_each_probe_safe(dst_probe, next, dst) {
+		src_probe = damon_nth_probe(i++, src);
+		if (src_probe) {
+			err = damon_commit_filters(dst_probe, src_probe);
+			if (err)
+				return err;
+		} else {
+			damon_destroy_probe(dst_probe);
+		}
+	}
+
+	damon_for_each_probe_safe(src_probe, next, src) {
+		if (j++ < i)
+			continue;
+
+		new_probe = damon_new_probe();
+		if (!new_probe)
+			return -ENOMEM;
+		damon_add_probe(dst, new_probe);
+		err = damon_commit_filters(new_probe, src_probe);
+		if (err)
+			return err;
+	}
+	return 0;
+}
+
 /**
  * damon_commit_ctx() - Commit parameters of a DAMON context to another.
  * @dst:	The commit destination DAMON context.
@@ -1442,6 +1543,9 @@ int damon_commit_ctx(struct damon_ctx *d
 	}
 	dst->pause = src->pause;
 	dst->ops = src->ops;
+	err = damon_commit_probes(dst, src);
+	if (err)
+		return err;
 	dst->addr_unit = src->addr_unit;
 	dst->min_region_sz = src->min_region_sz;
 
_

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