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 09B324DA528 for ; Tue, 15 Sep 2026 23:39:47 +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=1789515589; cv=none; b=gHQ86Q/dTCeKesj/GWcVL1FceStF480HoQ1GfLJkFAg7aOS2tjVYguhbRVkDOqxa2WQDUfn5HaD29tE97punVsiLixBd+9vhlqp6jQuZalCQV1jAQHtK9dLMvhoaAFtM+81XiBQ0jFkcBFP/E6/6/kn+JDx25GXH7peUTt0y+No= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789515589; c=relaxed/simple; bh=VKTepGkVxe/nPAb7JSaG0I8AlGiuKA6LQIyGx4L+nhE=; h=Date:To:From:Subject:Message-Id; b=R3QMOQ7c27fKgod0wjAUVn3daLjjWTmujHViGvrbid6cVXl9RPVoNHNql1uN5I7qTyQ4RYzA5XAhC9vPGvnsrrTb3eP0dxCb/0H/fsJHzXOQOZ5E1Zv+TyEVRSmtoCK1QboHsyZd8+tre2/F7kVF1+vOZ4CNKadYaJBdYX3Vwng= 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=h+AoCeyX; 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="h+AoCeyX" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C02DF1F000FF; Tue, 15 Sep 2026 23:39:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1789515587; bh=MKRnoo4w/si8xnsomXVn/dXz7OZ0xudjMdCiPsnJtXo=; h=Date:To:From:Subject; b=h+AoCeyX+AW6tcL/KT+pHathZC0PzPUSsOoEs0pD8nyB47BmrknpuBqjYl2x1nXYN uIks7pzJQryK8MOEBfccY3FBG5eIKFfm4vJfWng0C+pPI+mf+jpwibSNeWowpOJrTR NMitdZkO0H+OoDHtCoKKytxP3AUhZ/k26NPJ0Krs= Date: Tue, 15 Sep 2026 16:39:47 -0700 To: mm-commits@vger.kernel.org,sj@kernel.org,akpm@linux-foundation.org From: Andrew Morton Subject: + mm-damon-api-introduce-damon_filter_type_hugepage_size.patch added to mm-new branch Message-Id: <20260915233947.C02DF1F000FF@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: mm/damon/api: introduce DAMON_FILTER_TYPE_HUGEPAGE_SIZE has been added to the -mm mm-new branch. Its filename is mm-damon-api-introduce-damon_filter_type_hugepage_size.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-damon-api-introduce-damon_filter_type_hugepage_size.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 b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** 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: SJ Park Subject: mm/damon/api: introduce DAMON_FILTER_TYPE_HUGEPAGE_SIZE Date: Tue, 15 Sep 2026 07:33:50 -0700 Patch series "mm/damon: introduce hugepage_size probe filter". Knowing whether a given memory is backed by a hugepage of specific size is useful for efficient utilization of hugepages. For easy monitoring of the information, introduce a new data attribute probe filter type, hugepage_size. It works similar to the DAMOS filter of the same name. It works for memory that is backed by a hugepage of a given size range. Patch 1 introduces the new probe filter type to DAMON API and extends related data structures. Patch 2 updates probe filter commit logic to handle the size range. Patch 3 Updates the filtering logic to support the new type. Patch 4 adds new DAMON sysfs files for the size range. Patch 5 updates DAMON sysfs interface to fully support the new filter type. Patches 6-8 updates design, usage and ABI documents for the new feature. This patch (of 8): Introduce a new data attribute probe filter type, hugepage_size. It will work for memory that is backed by a hugepage of a given size range. Add a new damon_filter_type enum DAMON_FILTER_TYPE_HUGEPAGE_SIZE to identify the type. Add two new fields in the damon_filter struct for saving the size range. Link: https://lore.kernel.org/20260915143359.91472-1-sj@kernel.org Link: https://lore.kernel.org/20260915143359.91472-2-sj@kernel.org Signed-off-by: SJ Park Signed-off-by: Andrew Morton Cc: David Hildenbrand Cc: Liam R. Howlett Cc: Lorenzo Stoakes Cc: Michal Hocko Cc: Mike Rapoport Cc: Suren Baghdasaryan Cc: Vlastimil Babka --- include/linux/damon.h | 8 ++++++++ 1 file changed, 8 insertions(+) --- a/include/linux/damon.h~mm-damon-api-introduce-damon_filter_type_hugepage_size +++ a/include/linux/damon.h @@ -783,12 +783,14 @@ struct damon_prep { * @DAMON_FILTER_TYPE_MEMCG: Specific memcg's pages. * @DAMON_FILTER_TYPE_PGIDLE_UNSET: Pgidle is unset. * @DAMON_FILTER_TYPE_PGIDLE_SET: Pgidle is set. + * @DAMON_FILTER_TYPE_HUGEPAGE_SIZE: Page is part of a hugepage. */ enum damon_filter_type { DAMON_FILTER_TYPE_ANON, DAMON_FILTER_TYPE_MEMCG, DAMON_FILTER_TYPE_PGIDLE_UNSET, DAMON_FILTER_TYPE_PGIDLE_SET, + DAMON_FILTER_TYPE_HUGEPAGE_SIZE, }; /** @@ -798,6 +800,8 @@ enum damon_filter_type { * @matching: Whether this filter is for the type-matching ones. * @allow: Whether the @type-@matching ones should pass this filter. * @memcg_id: Memcg id of the question if @type is DAMON_FILTER_MEMCG. + * @range_min: Minimum value of range arguments. + * @range_max: Maximum value of range arguments. */ struct damon_filter { enum damon_filter_type type; @@ -805,6 +809,10 @@ struct damon_filter { bool allow; union { u64 memcg_id; + struct { + unsigned long range_min; + unsigned long range_max; + }; }; /* private: */ /* Siblings list. */ _ 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-reset-invalid-quota-charge_target_from.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 mm-damon-vaddr-support-prep_probes.patch mm-damon-paddr-move-probe-filter-handling-to-ops-common.patch mm-damon-vaddr-support-apply_probe.patch mm-damon-vaddr-extend-apply_probes-for-hugetlb.patch mm-damon-vaddr-support-pgidle_unset-probe-filter-type.patch mm-damon-api-introduce-damon_filter_type_pgidle_set.patch mm-damon-paddr-support-damon_filter_type_pgidle_set.patch mm-damon-vaddr-support-damon_filter_type_pgidle_set.patch mm-damon-sysfs-support-damon_filter_type_pgidle_set.patch docs-mm-damon-design-update-for-pgidle_set-probe-filter.patch mm-damon-api-introduce-damos_filter_type_probe_hits_wsum.patch mm-damon-api-introduce-damos_filter_type_probe_hits_wsum-fix.patch mm-damon-core-extend-probe_hits_wsum-for-moving-sum-based-calculation.patch mm-damon-core-support-probe_hits_wsum-damos-core-filter.patch mm-damon-sysfs-schemes-rename-sysfs_filter-sz_range-to-range_minmax.patch mm-damon-sysfs-schemes-support-probe_hits_wsum-damos-core-filter.patch docs-mm-damon-design-update-for-probe_hits_wsum-damos-core-filter.patch docs-admin-guide-mm-damon-usage-update-for-probe_hits_wsum-damos-filter.patch 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