* + mm-damon-tests-core-kunit-add-damon_commit_probes-test.patch added to mm-unstable branch
@ 2026-09-08 23:10 Andrew Morton
0 siblings, 0 replies; only message in thread
From: Andrew Morton @ 2026-09-08 23:10 UTC (permalink / raw)
To: mm-commits, sj, akpm
The patch titled
Subject: mm/damon/tests/core-kunit: add damon_commit_probes() test
has been added to the -mm mm-unstable branch. Its filename is
mm-damon-tests-core-kunit-add-damon_commit_probes-test.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-damon-tests-core-kunit-add-damon_commit_probes-test.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: SJ Park <sj@kernel.org>
Subject: mm/damon/tests/core-kunit: add damon_commit_probes() test
Date: Wed, 2 Sep 2026 07:03:08 -0700
Add kunit test to ensure damon_commit_probes() updates destination DAMON
context with source probes as expected.
Link: https://lore.kernel.org/20260902140313.85983-3-sj@kernel.org
Signed-off-by: SJ Park <sj@kernel.org>
Cc: Brendan Higgins <brendan.higgins@linux.dev>
Cc: David Gow <davidgow@davidgow.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
mm/damon/tests/core-kunit.h | 84 ++++++++++++++++++++++++++++++++++
1 file changed, 84 insertions(+)
--- a/mm/damon/tests/core-kunit.h~mm-damon-tests-core-kunit-add-damon_commit_probes-test
+++ a/mm/damon/tests/core-kunit.h
@@ -1355,6 +1355,89 @@ static void damon_test_commit_filter(str
});
}
+static struct damon_ctx *damon_test_help_setup_probes(unsigned int weights[],
+ int nr_weights)
+{
+ struct damon_ctx *ctx;
+ struct damon_probe *probe;
+ int i;
+
+ ctx = damon_new_ctx();
+ if (!ctx)
+ return NULL;
+ for (i = 0; i < nr_weights; i++) {
+ probe = damon_new_probe();
+ if (!probe) {
+ damon_destroy_ctx(ctx);
+ return NULL;
+ }
+ probe->weight = weights[i];
+ damon_add_probe(ctx, probe);
+ }
+ return ctx;
+}
+
+static void damon_test_commit_probes_for(struct kunit *test,
+ unsigned int dst_weights[], int nr_dst_probes,
+ unsigned int src_weights[], int nr_src_probes)
+{
+ struct damon_ctx *dst, *src;
+ int err;
+ struct damon_probe *dst_probe, *src_probe;
+
+ dst = damon_test_help_setup_probes(dst_weights, nr_dst_probes);
+ if (!dst)
+ kunit_skip(test, "dst alloc fail");
+ src = damon_test_help_setup_probes(src_weights, nr_src_probes);
+ if (!src) {
+ damon_destroy_ctx(dst);
+ kunit_skip(test, "src alloc fail");
+ }
+
+ err = damon_commit_probes(dst, src);
+ KUNIT_EXPECT_EQ(test, err, 0);
+ if (err)
+ goto out;
+ nr_dst_probes = 0;
+ damon_for_each_probe(dst_probe, dst)
+ nr_dst_probes++;
+ nr_src_probes = 0;
+ damon_for_each_probe(src_probe, src)
+ nr_src_probes++;
+ KUNIT_EXPECT_EQ(test, nr_dst_probes, nr_src_probes);
+ if (nr_dst_probes != nr_src_probes)
+ goto out;
+ nr_dst_probes = 0;
+ damon_for_each_probe(dst_probe, dst) {
+ src_probe = damon_nth_probe(nr_dst_probes, src);
+ KUNIT_EXPECT_EQ(test, src_probe->weight, dst_probe->weight);
+ nr_dst_probes++;
+ }
+out:
+ damon_destroy_ctx(dst);
+ damon_destroy_ctx(src);
+}
+
+static void damon_test_commit_probes(struct kunit *test)
+{
+ damon_test_commit_probes_for(test,
+ (unsigned int[]){}, 0, (unsigned int[]){}, 0);
+ damon_test_commit_probes_for(test,
+ (unsigned int[]){}, 0, (unsigned int[]){1}, 1);
+ damon_test_commit_probes_for(test,
+ (unsigned int[]){}, 0, (unsigned int[]){1, 2}, 2);
+ damon_test_commit_probes_for(test,
+ (unsigned int[]){1}, 1, (unsigned int[]){2}, 1);
+ damon_test_commit_probes_for(test,
+ (unsigned int[]){1}, 1, (unsigned int[]){2, 3}, 2);
+ damon_test_commit_probes_for(test,
+ (unsigned int[]){2, 3}, 2, (unsigned int[]){1}, 1);
+ damon_test_commit_probes_for(test,
+ (unsigned int[]){2, 3}, 2, (unsigned int[]){}, 0);
+ damon_test_commit_probes_for(test,
+ (unsigned int[]){2}, 1, (unsigned int[]){}, 0);
+}
+
static void damon_test_commit_ctx(struct kunit *test)
{
struct damon_ctx *src, *dst;
@@ -1762,6 +1845,7 @@ static struct kunit_case damon_test_case
KUNIT_CASE(damos_test_commit_migrate_hot),
KUNIT_CASE(damon_test_commit_target_regions),
KUNIT_CASE(damon_test_commit_filter),
+ KUNIT_CASE(damon_test_commit_probes),
KUNIT_CASE(damon_test_commit_ctx),
KUNIT_CASE(damon_test_valid_probe_params),
KUNIT_CASE(damos_test_filter_out),
_
Patches currently in -mm which might be from sj@kernel.org are
mm-damon-vaddr-avoid-hw-driven-pte-updates-during-damon_hugetlb_mkold.patch
mm-damon-core-skip-applying-scheme-if-region-split-for-quota-fails.patch
mm-damon-paddr-respect-folio-end-for-damos_stat.patch
mm-damon-paddr-respect-folio-end-for-damos-actions-except-stat.patch
mm-damon-vaddr-respect-folio-end-for-damos_stat.patch
mm-damon-vaddr-respect-folio-end-for-damos_migrate_hotcold.patch
mm-damon-core-handle-extreme-memory-state-in-damon_get_node_mem_bp.patch
mm-damon-core-handle-extreme-memory-state-in-get_node_memcg_used_bp.patch
mm-damon-core-handle-extreme-memory-state-in-get_in_active_mem_bp.patch
mm-damon-core-introduce-damon_filter_type_pgidle_unset.patch
mm-damon-paddr-support-pgidle_unset-probe-filter-type.patch
mm-damon-sysfs-support-pgidle_unset-probe-filter-type.patch
docs-mm-damon-design-document-pgidle_unset-probe-filter-type.patch
mm-damon-core-introduce-damon_prep-struct.patch
mm-damon-core-commit-preps.patch
mm-damon-core-introduce-damon_operations-prep_probes.patch
mm-damon-paddr-support-damon_prep.patch
mm-damon-sysfs-implement-preps-directory.patch
mm-damon-sysfs-implement-preps-nr_preps-file.patch
mm-damon-sysfs-create-directories-for-nr_preps-writes.patch
mm-damon-sysfs-implement-prep_action-file.patch
mm-damon-sysfs-pass-preps-to-damon-core.patch
selftests-damon-sysfssh-test-probe-prep-sysfs-files.patch
docs-mm-damon-design-document-probe-preps.patch
docs-admin-guide-mm-damon-usage-document-probe-preps-sysfs-files.patch
docs-abi-damon-document-probe-prep-sysfs-files.patch
mm-damon-tests-core-kunit-test-committing-psi-goal-to-psi-goal.patch
mm-damon-core-handle-uninitialized-damos_quota_goal-last_psi_total.patch
mm-damon-core-copy-nid-for-eligible_mem_bp-damos-quota-goal-commit.patch
mm-damon-sysfs-set-next-refresh-jiffies-per-sysfs-context.patch
mm-damon-tests-core-kunit-test-damon_commit_filter.patch
mm-damon-tests-core-kunit-add-damon_commit_probes-test.patch
selftests-damon-_damon_sysfs-implement-damonprobes.patch
selftests-damon-drgn_dump_damon_status-dump-probes.patch
selftests-damon-sysfspy-extend-commit-assertion-function-for-probes.patch
selftests-damon-sysfspy-test-damon-probes.patch
mm-damon-core-use-damon_nr_samples_per_aggr-for-max-merge-threshold.patch
mm-damon-core-remove-debug-messages.patch
mm-damon-core-remove-debug-messages-fix.patch
mm-damon-vaddr-remove-a-debug-message.patch
mm-damon-core-validate-number-of-probes-in-valid_probe_params.patch
mm-damon-sysfs-remove-probes-number-validation.patch
mm-damon-tests-core-kunit-extend-set_regions-test-for-error-case.patch
mm-damon-tests-core-kunit-test-=0-size-damon_set_regions-inputs.patch
mm-damon-tests-core-kunit-test-overlapping-ranges-for-set_regions.patch
mm-damon-tests-core-kunit-test-damon_nr_samples_per_aggr.patch
selftests-damon-sysfssh-test-hugepage_mem_bp-quota-goal.patch
docs-mm-damon-maintainer-profile-update-ai-review-for-sashiko-replies.patch
docs-abi-damon-recommend-subsystem-doc-instead-of-admin-guide.patch
mm-damon-core-error-damos_commit_quota_goal-for-zero-target_value.patch
revert-mm-damon-lru_sort-error-out-for-10000-active_mem_bp.patch
revert-samples-damon-mtier-error-out-for-zero-quota-goal-target-values.patch
mm-damon-core-handle-null-ctx-parameter-in-damon_call.patch
mm-damon-core-set-ctx-call_controls_obsolete-in-damon_new_ctx.patch
mm-damon-reclaim-remove-unnecessary-damon_call-param-validation.patch
mm-damon-lru_sort-remove-unnecessary-damon_call-param-validation.patch
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2026-09-08 23:10 + mm-damon-tests-core-kunit-add-damon_commit_probes-test.patch added to mm-unstable branch Andrew Morton
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