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 47C6741BA81 for ; Fri, 9 Oct 2026 05:59:10 +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=1791525551; cv=none; b=fYRErLAxN2hC2OZvBB4GOwGYVkBaQ+MdJ24wa2BZLxGGlIz2wOOL4GXSGyjwi2swLDz7V/wWH9o8JN/DpYQazMHJulh8bHOoahKDER37kUtFtpCKOsNVHfj1FOTtuER8H2ObEJpXDHugOIt9Zrz6xssxba44NiYWy8+yMn4eg5M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791525551; c=relaxed/simple; bh=TOjbeplI4Wtz03s/M2oagGvSh+eI+/7t2wJLJyC1zks=; h=Date:To:From:Subject:Message-Id; b=eIELVRGwtHbhbT0IEq9AnGTZrORuDo4ZGAhKajLhtC4Hhj5esOtUSldxgZObvqHfIFrbzOC7ROMhAu0svFrbrXzuE86R5og8gzKzk8g4sNmbLMPROYGD28km1Esdy3MbXDxQYLit/1ok1Fnxj1KlV1nqO2dNkmUqbMtk3ceRAJo= 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=xpx8n2f6; 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="xpx8n2f6" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 15EC51F000FF; Fri, 9 Oct 2026 05:59:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1791525550; bh=TwoZlvGIXbPUA1kMs699Dzfhap5nIVS/FSevhQ9W04I=; h=Date:To:From:Subject; b=xpx8n2f6JWyfU6Q10qD5N7uqiRiAEbHO1wQqbM3q5UCYjtMuVstk6k/GowIKzkrhZ CdiqUWcre+1J9kOvtOsNpbBP2im3KuAJlbBuK42L9ec6ZOr5s1ipsiE0km0g0gxczo aBe43bYxLf0PvLPJhAX51vA/wipq7WfLLRHybGGg= Date: Thu, 08 Oct 2026 22:59:09 -0700 To: mm-commits@vger.kernel.org,vbabka@kernel.org,surenb@google.com,rppt@kernel.org,rdunlap@infradead.org,mhocko@suse.com,ljs@kernel.org,liam@infradead.org,david@kernel.org,corbet@lwn.net,sj@kernel.org,akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-stable] mm-damon-api-introduce-damos_filter_type_probe_hits_wsum.patch removed from -mm tree Message-Id: <20261009055910.15EC51F000FF@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/api: introduce DAMOS_FILTER_TYPE_PROBE_HITS_WSUM has been removed from the -mm tree. Its filename was mm-damon-api-introduce-damos_filter_type_probe_hits_wsum.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/api: introduce DAMOS_FILTER_TYPE_PROBE_HITS_WSUM Date: Fri, 11 Sep 2026 06:55:03 -0700 Patch series "mm/damon: introduce probe_hits_wsum DAMOS core filter", v2. DAMON can do flexible data attributes monitoring. The classical data access monitoring can also be done using the attributes monitoring. The access event is just one of the data attributes that DAMON supports. Users do monitoring to make some actions based on it. DAMOS is a feature for automating that. However, DAMOS cannot utilize the data attributes monitoring results. It is still Data "Access" Monitoring-based Operation Schemes. It requires users to set the target "access" pattern. DAMOS core filter is effectively the same as the target access pattern. It is just a more generalized and flexible way of describing the operation action target region. Introduce a new DAMOS core filter type, probe_hits_wsum. It specifies the filter target based on a range of the probe hits weighted sum. Using this, users can apply DAMOS actions to regions of specific data attributes pattern. Note that the classic target access pattern still works. Hence the target nr_accesses range should still be properly configured. The new filter would be used in only data attributes-only mode. In the mode, classic access monitoring is just turned off, and therefore nr_accesses of regions are always zero. Users could simply set the target nr_accesses range to include the zero nr_Accesses regions. Patches Sequence ================ Patch 1 updates the DAMON kernel API for the new filter type. Patch 2 extends damon_probe_hits_wsum() to do the calculation based on moving sum. Patch 3 implements the filter type in the core layer. Patch 4 refactors DAMON sysfs interface internal data structure for efficient reuse of data structure for the probe hits weighted sum range user inputs. Patch 5 updates DAMON sysfs interface to support the new filter type. Patches 6 and 7 update design and usage documents for the new filter type, respectively. This patch (of 7): Update DAMON kernel API to introduce new DAMOS core filter type, PROBE_HITS_WSUM. It will allow API callers to describe the DAMOS action target regions based on their probe_hits weighted sum. For describing the filtering target weighted sum range, add two type-dependent union fields to damos_filter. [sj@kernel.org: clarify DAMOS_FILTER_TYPE_PROBE_HITS_WSUM behavior] Link: https://lore.kernel.org/20260911142522.98013-1-sj@kernel.org Link: https://lore.kernel.org/20260911135510.96914-1-sj@kernel.org Link: https://lore.kernel.org/20260911135510.96914-2-sj@kernel.org Signed-off-by: SJ Park Signed-off-by: Andrew Morton Cc: David Hildenbrand Cc: Jonathan Corbet Cc: Liam R. Howlett Cc: Lorenzo Stoakes Cc: Michal Hocko Cc: Mike Rapoport Cc: Randy Dunlap Cc: Suren Baghdasaryan Cc: Vlastimil Babka --- include/linux/damon.h | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-) --- a/include/linux/damon.h~mm-damon-api-introduce-damos_filter_type_probe_hits_wsum +++ a/include/linux/damon.h @@ -399,14 +399,15 @@ struct damos_stat { * @DAMOS_FILTER_TYPE_UNMAPPED: Unmapped pages. * @DAMOS_FILTER_TYPE_ADDR: Address range. * @DAMOS_FILTER_TYPE_TARGET: Data Access Monitoring target. + * @DAMOS_FILTER_TYPE_PROBE_HITS_WSUM: probe_hits weighted sum range. * @NR_DAMOS_FILTER_TYPES: Number of filter types. * - * All types except &DAMOS_FILTER_TYPE_ADDR and &DAMOS_FILTER_TYPE_TARGET - * are handled by the underlying &struct damon_operations as a part of scheme - * action trying, and therefore accounted as 'tried'. In contrast, - * &DAMOS_FILTER_TYPE_ADDR and &DAMOS_FILTER_TYPE_TARGET filters are handled - * by the core layer before trying of the action, and therefore not accounted - * as 'tried'. + * All types except &DAMOS_FILTER_TYPE_ADDR, &DAMOS_FILTER_TYPE_TARGET and + * &DAMOS_FILTER_TYPE_PROBE_HITS_WSUM are handled by the underlying &struct + * damon_operations as a part of scheme action trying, and therefore accounted + * as 'tried'. In contrast, &DAMOS_FILTER_TYPE_ADDR, &DAMOS_FILTER_TYPE_TARGET + * and &DAMOS_FILTER_TYPE_PROBE_HITS_WSUM filters are handled by the core layer + * before trying of the action, and therefore not accounted as 'tried'. * * Support for the operations-handled filters depends on the running * &struct damon_operations. @@ -420,6 +421,7 @@ enum damos_filter_type { DAMOS_FILTER_TYPE_UNMAPPED, DAMOS_FILTER_TYPE_ADDR, DAMOS_FILTER_TYPE_TARGET, + DAMOS_FILTER_TYPE_PROBE_HITS_WSUM, NR_DAMOS_FILTER_TYPES, }; @@ -434,6 +436,8 @@ enum damos_filter_type { * &damon_ctx->adaptive_targets if @type is * DAMOS_FILTER_TYPE_TARGET. * @sz_range: Size range if @type is DAMOS_FILTER_TYPE_HUGEPAGE_SIZE. + * @range_min: Minimum value of range arguments. + * @range_max: Maximum value of range arguments. * * Before applying the &damos->action to a memory region, DAMOS checks if each * byte of the region matches to this given condition and avoid applying the @@ -450,6 +454,10 @@ struct damos_filter { struct damon_addr_range addr_range; int target_idx; struct damon_size_range sz_range; + struct { + unsigned long range_min; + unsigned long range_max; + }; }; /* private: */ /* List head for siblings. */ _ 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