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 8A01B48167D for ; Tue, 1 Sep 2026 17:17:51 +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=1788283072; cv=none; b=pUkO6lJUFHg6bBUwZTjDa2R7+LDR64jW+HkMTiilheBZNDtbqPGZpV9fpsDuxp+yGB9YdXx8GLZ9ImxttUXqg1f1L9Ld2aHaIOvf0K+BkG/H0bfyqLghEZyhXPbtZW3ES6DaqpyHwj70UyF8bt3bqWRsXwzeNAIpmajPuHeXB0Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788283072; c=relaxed/simple; bh=8pJklW8UIpA68X0/0h+zmqcAlHNg+je4IW0QiosMDko=; h=Date:To:From:Subject:Message-Id; b=JQqqQEOrqLzaSh+UWgoX8jS9K8FyVP1LjsUZQEwI6UYplbI9kaZjTVbkyShF4zwvRP9AGbygAXCo3Gst1exyAVA6KkRBMak/ehNGijT19+d62WrxZus9Rtt5OMd2AuI9i4h/c6TSPjwzqYUiNd22LI/liwQYFNYFWtVVt2EWOgQ= 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=Sf6CcWSN; 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="Sf6CcWSN" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5DE421F000E9; Tue, 1 Sep 2026 17:17:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1788283071; bh=+NSzNpLVd5F3xBDZ1bTMbb85ACpZmxqiMi7MXYl+HnQ=; h=Date:To:From:Subject; b=Sf6CcWSNnpM8lnlLp2KWiO8R8JwPIubTgagzlo9AGbuC7l/yetXtj//ri3aqTCtrT T3MJgMhqPjDmbOUaQNY54pl7+qvpAxgOVxMUwmt9J0f/M6cXfikeOvi+G+5LE3Jnaf mu3s9s3ezr25WAOwXqMgERchQXWt2pS2W8Tdx2y8= Date: Tue, 01 Sep 2026 10:17:50 -0700 To: mm-commits@vger.kernel.org,sj@kernel.org,akpm@linux-foundation.org From: Andrew Morton Subject: + mm-damon-paddr-support-damon_prep.patch added to mm-new branch Message-Id: <20260901171751.5DE421F000E9@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/paddr: support damon_prep has been added to the -mm mm-new branch. Its filename is mm-damon-paddr-support-damon_prep.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-damon-paddr-support-damon_prep.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/paddr: support damon_prep Date: Tue, 1 Sep 2026 06:24:55 -0700 Implement damon_operations->prep_probes() callback. Support the only existing prep action, DAMON_PREP_SET_PGIDLE in a way similar to what it was doing for the access check preparation: unset page table accessed bits and set PG_Idle flag. Reuse the function for the access check preparation. Link: https://lore.kernel.org/20260901132506.99243-9-sj@kernel.org Signed-off-by: SJ Park 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 Signed-off-by: Andrew Morton --- mm/damon/paddr.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) --- a/mm/damon/paddr.c~mm-damon-paddr-support-damon_prep +++ a/mm/damon/paddr.c @@ -105,6 +105,40 @@ static unsigned int damon_pa_check_acces return max_nr_accesses; } +static void damon_pa_prep_probes_region(struct damon_region *r, + struct damon_probe *probe, struct damon_ctx *ctx) +{ + struct damon_prep *p; + + damon_for_each_prep(p, probe) { + switch (p->action) { + case DAMON_PREP_SET_PGIDLE: + damon_pa_mkold(damon_pa_phys_addr(r->sampling_addr, + ctx->addr_unit)); + break; + default: + break; + } + } +} + +static void damon_pa_prep_probes(struct damon_ctx *ctx, bool set_samples) +{ + struct damon_target *t; + struct damon_region *r; + struct damon_probe *p; + + damon_for_each_target(t, ctx) { + damon_for_each_region(r, t) { + if (set_samples) + r->sampling_addr = damon_rand(ctx, r->ar.start, + r->ar.end); + damon_for_each_probe(p, ctx) + damon_pa_prep_probes_region(r, p, ctx); + } + } +} + static bool damon_pa_filter_match(struct damon_filter *filter, struct folio *folio) { @@ -448,6 +482,7 @@ static int __init damon_pa_initcall(void .update = NULL, .prepare_access_checks = damon_pa_prepare_access_checks, .check_accesses = damon_pa_check_accesses, + .prep_probes = damon_pa_prep_probes, .apply_probes = damon_pa_apply_probes, .target_valid = NULL, .apply_scheme = damon_pa_apply_scheme, _ Patches currently in -mm which might be from sj@kernel.org are 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