From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B830D3F870C for ; Fri, 9 Oct 2026 05:56:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791525376; cv=none; b=raLTNgodN8Nmeay7erA1zZWAE05QlR66zLWtdpH9dHTFSxsgtzy4a4/RqFx0YCpQVLzDc1c/f5NWbxnLkzrROmDqhH+4xsJNvF8uUXJijqqaKcC0ArUAuvvUil2Vdkj4QALCLicQyMr610KjAYd4vRwjGqls+fShBGa2Bhuo6NQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791525376; c=relaxed/simple; bh=QUg9xQER/iZE/QiQfkIs1ysqBlf1cmClZA676ZBnWHI=; h=Date:To:From:Subject:Message-Id; b=Gyokq/FqnpiO2StFz6NprA/cHvffoyPHXCrm8g3Qsfr8ySs+MrhA1psdmxhQDaxQrdocSPYuD/e+149sB9+4AqFWhS4vMtWmbG4BD3yscQfxZ2BibgMDitP1Jq1u7+qzTLXvyJCRzH94fJwy0+fWHPIc3kc0GKX6TnDAGRkqZas= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=MCTY+swf; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="MCTY+swf" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8D2341F00898; Fri, 9 Oct 2026 05:56:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1791525374; bh=68UfNhJ3QRN0+LTwx9jx653Rtp4NeeefOV+9h0TxaCE=; h=Date:To:From:Subject; b=MCTY+swf7hgf71E2shBW31eGjFVldfD+GY8zFs+ednZ+peAN2zuOQT0KzFBLW/5sa dWB5XqxWdt+lWIFAstSfV+4FTrrXURIk2ZgdAhmK4oNTrW9jBZC5DtF+GSkbWO8fqt D+/++6MolBJ40FVy6Idzta3w639vj3J9gM4+544U= Date: Thu, 08 Oct 2026 22:56:14 -0700 To: mm-commits@vger.kernel.org,vbabka@kernel.org,surenb@google.com,shuah@kernel.org,rppt@kernel.org,rdunlap@infradead.org,mhocko@suse.com,ljs@kernel.org,liam@infradead.org,kunwu.chan@gmail.com,david@kernel.org,davidgow@davidgow.net,corbet@lwn.net,brendan.higgins@linux.dev,sj@kernel.org,akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-stable] mm-damon-tests-core-kunit-test-damon_nr_samples_per_aggr.patch removed from -mm tree Message-Id: <20261009055614.8D2341F00898@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The quilt patch titled Subject: mm/damon/tests/core-kunit: test damon_nr_samples_per_aggr() has been removed from the -mm tree. Its filename was mm-damon-tests-core-kunit-test-damon_nr_samples_per_aggr.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: SJ Park Subject: mm/damon/tests/core-kunit: test damon_nr_samples_per_aggr() Date: Tue, 1 Sep 2026 22:47:42 -0700 damon_max_nr_accesses(), which is a previous version of damon_nr_samples_per_aggr() before the renaming, was wrongly returning zero or random overflowed values for extreme intervals setup. Commit 35d4a3cf70a8 ("mm/damon/ops-common: handle extreme intervals in damon_hot_score()") updated the function to return correct or more valid values. Add a kunit test to ensure it is working as expected. Link: https://lore.kernel.org/20260902054747.99370-10-sj@kernel.org Signed-off-by: SJ Park Signed-off-by: Andrew Morton Reviewed-by: Kunwu Chan Cc: Brendan Higgins Cc: David Gow Cc: David Hildenbrand Cc: Jonathan Corbet Cc: Liam R. Howlett Cc: Lorenzo Stoakes Cc: Michal Hocko Cc: Mike Rapoport Cc: Randy Dunlap Cc: Shuah Khan Cc: Suren Baghdasaryan Cc: Vlastimil Babka --- mm/damon/tests/core-kunit.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) --- a/mm/damon/tests/core-kunit.h~mm-damon-tests-core-kunit-test-damon_nr_samples_per_aggr +++ a/mm/damon/tests/core-kunit.h @@ -625,6 +625,27 @@ static void damon_test_set_regions(struc (struct damon_addr_range[]){}, 0, -EINVAL); } +static void damon_test_nr_samples_per_aggr(struct kunit *test) +{ + struct damon_attrs attrs = { + .sample_interval = 0, + .aggr_interval = 0, + }; + + /* Zero aggregation interval doesn't cause division by zero */ + KUNIT_EXPECT_EQ(test, damon_nr_samples_per_aggr(&attrs), 1); + + /* + * Too large aggregation interval on 64 bit system doesn't cause + * overflow + */ + if (ULONG_MAX > UINT_MAX) { + attrs.aggr_interval = (unsigned long)UINT_MAX + 1; + KUNIT_EXPECT_EQ(test, damon_nr_samples_per_aggr(&attrs), + UINT_MAX); + } +} + static void damon_test_update_monitoring_result(struct kunit *test) { struct damon_attrs old_attrs = { @@ -1858,6 +1879,7 @@ static struct kunit_case damon_test_case KUNIT_CASE(damon_test_split_above_half_progresses), KUNIT_CASE(damon_test_ops_registration), KUNIT_CASE(damon_test_set_regions), + KUNIT_CASE(damon_test_nr_samples_per_aggr), KUNIT_CASE(damon_test_update_monitoring_result), KUNIT_CASE(damon_test_set_attrs), KUNIT_CASE(damon_test_mvsum), _ Patches currently in -mm which might be from sj@kernel.org are mm-damon-sysfs-schemes-read-sysfs_filter-addr_range-only-once.patch mm-damon-sysfs-schemes-read-sysfs_filter-sz_range-only-once.patch mm-damon-core-return-an-error-from-damos_commit_filter_arg.patch mm-damon-core-disallow-max-min-damos-filter-range-arguments-commit.patch mm-damon-sysfs-schemes-drop-centralized-filter-range-arg-validations.patch mm-damon-sysfs-schemes-use-switch-case-in-add_scheme_filters.patch mm-damon-core-kunit-extend-damos_commit_filter_for-for-wrong-input.patch mm-damon-core-kunit-test-invalid-damos-filter-commits.patch mm-damon-api-introduce-damon_filter_type_hugepage_size.patch mm-damon-core-commit-hugepage_size-type-damon-filter.patch mm-damon-ops-common-support-hugepage_size-damon-filter-matching.patch mm-damon-sysfs-add-minmax-files-under-probe-filter-directory.patch mm-damon-sysfs-support-hugepage_size-probe-filter.patch docs-mm-damon-design-update-for-hugepage_size-probe-filter.patch docs-admin-guide-mm-damon-usage-update-for-hugepage_size.patch docs-abi-damon-update-for-hugepage_size-probe-filter.patch mm-damon-api-remove-nr_damos_filter_types.patch mm-damon-core-use-abs_diff-in-damon_feed_loop_next_input.patch mm-damon-core-use-mult_frac-in-damon_feed_loop_next_input.patch mm-damon-core-set-damon_ctx-walk_control_obsolete-in-damon_new_ctx.patch mm-damon-core-document-damon_call-damon_start-race-hang-issue.patch mm-damon-paddr-remove-pa-parameter-from-damon_pa_filter_pass.patch mm-damon-tests-core-kunit-test-eligible_mem_bp-commitment.patch mm-damon-tests-core-kunit-add-probe_hits_wsum-damos-filter-commit-test.patch selftests-damon-sysfs_memcg_path_leak-fail-only-for-real-damon-leak.patch docs-mm-damon-design-clarify-bp-is-basis-point.patch mm-damon-core-introduce-damos_quota_goal-complement.patch mm-damon-core-add-complement-argument-to-damos_new_quota_goal.patch mm-damon-sysfs-schemes-support-quota-goal-complement-flag.patch mm-damon-tests-core-kunit-test-quota_goal-complement-commit.patch selftests-damon-sysfssh-test-quota-goal-complement-flag-file.patch docs-mm-damon-design-document-damos-quota-goal-complement-flag.patch docs-admin-guide-mm-damon-usage-update-for-quota-goal-complement-file.patch docs-abi-damon-update-for-quota-goal-metric-complement-sysfs-file.patch