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 6EACA411FBE for ; Fri, 9 Oct 2026 05:59:11 +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=1791525553; cv=none; b=VlDEKixKrMcEMDxv36HTab1vtcqyzp8289pSlU7PF98RdlbeySpYyTVn7EE9e4T31nBP8STuk0hgVwe2mWftAgnyNL57XqnMzQUh/GC1yMs3LCPilpYMxhu2Wn674YUY8VyP8nW2GOtMn0Yb3Om08Wvp0LAKznzVdwEqmDpBZOI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791525553; c=relaxed/simple; bh=tA8m2l89uBQp6oSy3jcNoxOMQ7SDq9GHUvnkC/udnyU=; h=Date:To:From:Subject:Message-Id; b=AB4/inZcu2EFviaQ6Q6gta2zVOO+QbUZpF0800fEgjvXlhoF4tSBRcx57+ZxTI8E9wcOgQhj+Xvp4hRm5S5qn+ljpOyG31DjCkeB1L3OEJc5NikT9TuLgW+OTg04FqywU0hCuJqEaFQdi+bk+hKW9y5+R6BNvvbms/ZEHuWVgDU= 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=tudD2bY5; 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="tudD2bY5" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3D1901F00893; Fri, 9 Oct 2026 05:59:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1791525551; bh=BJuqRN7KC4u85JL3llKii7WA/MZvOYyF9ZrP4u8TLbA=; h=Date:To:From:Subject; b=tudD2bY5Ju44yRUYNJ0/J038H62xK57YIPwS9NSy/HxWgwyJvYVSfg4QiTR3gph5D 1UsM2m++/uQQFz1RDT2KghjXnVqId3iFRvBhOGALD/oQuB7ogCz/xCkJPecRhWAtK1 5Y5y1CM9PasDaqqBGM2o1gcWk3E4A4Ms8YXNkOGk= Date: Thu, 08 Oct 2026 22:59:10 -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-core-extend-probe_hits_wsum-for-moving-sum-based-calculation.patch removed from -mm tree Message-Id: <20261009055911.3D1901F00893@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/core: extend probe_hits_wsum() for moving sum based calculation has been removed from the -mm tree. Its filename was mm-damon-core-extend-probe_hits_wsum-for-moving-sum-based-calculation.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/core: extend probe_hits_wsum() for moving sum based calculation Date: Fri, 11 Sep 2026 06:55:04 -0700 damon_probe_hits_wsum() is being called only in aggregation time. In future, it could also be used by DAMOS. In this case, since DAMOS uses its own apply_interval, it could be called in sampling time. Then using the not yet fully aggregated probe_hits could result in suboptimum outcomes. Extend damon_probe_hits_wsum() to get the weighted sum based on moving sum to prepare the DAMOS usage. Link: https://lore.kernel.org/20260911135510.96914-3-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 | 2 +- mm/damon/core.c | 8 ++++++-- mm/damon/paddr.c | 2 +- mm/damon/vaddr.c | 2 +- 4 files changed, 9 insertions(+), 5 deletions(-) --- a/include/linux/damon.h~mm-damon-core-extend-probe_hits_wsum-for-moving-sum-based-calculation +++ a/include/linux/damon.h @@ -1075,7 +1075,7 @@ unsigned int damon_nr_accesses_mvsum(str struct damon_ctx *ctx); unsigned char damon_probe_hits_mvsum(int probe_idx, struct damon_region *r, struct damon_ctx *ctx); -unsigned int damon_probe_hits_wsum(struct damon_region *r, bool last, +unsigned int damon_probe_hits_wsum(struct damon_region *r, bool last, bool mv, struct damon_ctx *ctx); int damon_set_regions(struct damon_target *t, struct damon_addr_range *ranges, --- a/mm/damon/core.c~mm-damon-core-extend-probe_hits_wsum-for-moving-sum-based-calculation +++ a/mm/damon/core.c @@ -469,11 +469,12 @@ static bool damon_is_last_region(struct * damon_probe_hits_wsum() - Returns probe hits weighted sum of a region. * @r: region to get the weighted sum of. * @last: if the request is for last-window aggregated probe hits. + * @mv: use moving sum. * @ctx: context of &r. * * Return: the weighted sum of probe hits of the region. */ -unsigned int damon_probe_hits_wsum(struct damon_region *r, bool last, +unsigned int damon_probe_hits_wsum(struct damon_region *r, bool last, bool mv, struct damon_ctx *ctx) { struct damon_probe *probe; @@ -483,6 +484,9 @@ unsigned int damon_probe_hits_wsum(struc damon_for_each_probe(probe, ctx) { if (last) sum += r->last_probe_hits[i++] * probe->weight; + else if (mv) + sum += damon_probe_hits_mvsum(i++, r, ctx) * + probe->weight; else sum += r->probe_hits[i++] * probe->weight; } @@ -3472,7 +3476,7 @@ static unsigned int damon_merge_score(st struct damon_ctx *ctx, bool use_probe_hits) { if (use_probe_hits) - return damon_probe_hits_wsum(r, last, ctx); + return damon_probe_hits_wsum(r, last, false, ctx); if (last) return r->last_nr_accesses; return r->nr_accesses; --- a/mm/damon/paddr.c~mm-damon-core-extend-probe_hits_wsum-for-moving-sum-based-calculation +++ a/mm/damon/paddr.c @@ -208,7 +208,7 @@ static unsigned int damon_pa_apply_probe folio_put(folio); if (return_max_wsum) max_wsum = max(damon_probe_hits_wsum(r, false, - ctx), max_wsum); + false, ctx), max_wsum); } } return max_wsum; --- a/mm/damon/vaddr.c~mm-damon-core-extend-probe_hits_wsum-for-moving-sum-based-calculation +++ a/mm/damon/vaddr.c @@ -711,7 +711,7 @@ static unsigned int damon_va_apply_probe __damon_va_apply_probes(ctx, mm, r); if (return_max_wsum) max_wsum = max(damon_probe_hits_wsum(r, false, - ctx), max_wsum); + false, ctx), max_wsum); } if (mm) mmput(mm); _ 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