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 C92AD48167D for ; Tue, 1 Sep 2026 17:17:53 +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=1788283075; cv=none; b=fOAw5QKmUJ1NgFeWgf0bQ3pAZUN3a7ees2lCCRjxciyToTbCXNc9w7Id20q4v+fh7sfxpBBrS38u+GbQnE+Hx6e70EMmusUYgBOVcK2qChWanldeJhCdoRFrKgXaXeJ4cuIiIUzdasI/MOEuZ4d5vwzrIAp6lqyv+s78N08EqRc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788283075; c=relaxed/simple; bh=Wt/Ao5dxMkkWIdKxIx9+UDCBOaq7aPdw8GCkSvzYZP4=; h=Date:To:From:Subject:Message-Id; b=Kix66W14psduTb6OU/S0F6HwVTHMPPzqWWZpQ7Q0LLwKZjSQIfavnwFTkCTFlfwVvesVD1d7U6PcsmBLEWt6HXi0Y7a8ikDHLq7R7lUxq7Ck+1mgvNAGDANuL/IvTGu7UKv9WV4vIt1RqpNt79Oz0cFD/Os3FcsgqTCJyam2/7Y= 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=mBF3Ij7n; 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="mBF3Ij7n" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 72D9B1F000E9; Tue, 1 Sep 2026 17:17:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1788283073; bh=lMpHNwQPnOHVKv/GZysxC3xqhd11oxJJQr9xYwR1pBE=; h=Date:To:From:Subject; b=mBF3Ij7nBiFc+evKjE8KgW9+PkHcH7171eJWwoYSceKmEiU5n7FqjqL/lDZ8AQTf0 OiWEe7Zx52gBE2TmR6Nd6ixgChn1PMg0senlbSSEwLORferCCK1SqDlYP1d1IbbtU6 bsNYDG2MNhw5OTZg1I5zgnWTQ2IzX3NDXiGQ4Tnk= Date: Tue, 01 Sep 2026 10:17:53 -0700 To: mm-commits@vger.kernel.org,sj@kernel.org,akpm@linux-foundation.org From: Andrew Morton Subject: + mm-damon-sysfs-implement-preps-directory.patch added to mm-new branch Message-Id: <20260901171753.72D9B1F000E9@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/sysfs: implement preps directory has been added to the -mm mm-new branch. Its filename is mm-damon-sysfs-implement-preps-directory.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-damon-sysfs-implement-preps-directory.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/sysfs: implement preps directory Date: Tue, 1 Sep 2026 06:24:56 -0700 Implement a sysfs directory named 'preps' under the probe directory. It will be evolved to be used for specifying probe preps. Link: https://lore.kernel.org/20260901132506.99243-10-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/sysfs.c | 65 ++++++++++++++++++++++++++++++++++++++++----- 1 file changed, 59 insertions(+), 6 deletions(-) --- a/mm/damon/sysfs.c~mm-damon-sysfs-implement-preps-directory +++ a/mm/damon/sysfs.c @@ -750,6 +750,35 @@ static const struct kobj_type damon_sysf }; /* + * preps directory + */ + +struct damon_sysfs_preps { + struct kobject kobj; +}; + +static struct damon_sysfs_preps *damon_sysfs_preps_alloc(void) +{ + return kzalloc_obj(struct damon_sysfs_preps); +} + +static void damon_sysfs_preps_release(struct kobject *kobj) +{ + kfree(container_of(kobj, struct damon_sysfs_preps, kobj)); +} + +static struct attribute *damon_sysfs_preps_attrs[] = { + NULL, +}; +ATTRIBUTE_GROUPS(damon_sysfs_preps); + +static const struct kobj_type damon_sysfs_preps_ktype = { + .release = damon_sysfs_preps_release, + .sysfs_ops = &kobj_sysfs_ops, + .default_groups = damon_sysfs_preps_groups, +}; + +/* * filter directory */ @@ -1069,6 +1098,7 @@ static const struct kobj_type damon_sysf struct damon_sysfs_probe { struct kobject kobj; unsigned int weight; + struct damon_sysfs_preps *preps; struct damon_sysfs_filters *filters; }; @@ -1079,25 +1109,48 @@ static struct damon_sysfs_probe *damon_s static int damon_sysfs_probe_add_dirs(struct damon_sysfs_probe *probe) { + struct damon_sysfs_preps *preps; struct damon_sysfs_filters *filters; int err; - filters = damon_sysfs_filters_alloc(); - if (!filters) + preps = damon_sysfs_preps_alloc(); + if (!preps) return -ENOMEM; + probe->preps = preps; + + err = kobject_init_and_add(&preps->kobj, &damon_sysfs_preps_ktype, + &probe->kobj, "preps"); + if (err) + goto put_preps_out; + + filters = damon_sysfs_filters_alloc(); + if (!filters) { + err = -ENOMEM; + goto del_preps_out; + } probe->filters = filters; err = kobject_init_and_add(&filters->kobj, &damon_sysfs_filters_ktype, &probe->kobj, "filters"); - if (err) { - kobject_put(&filters->kobj); - probe->filters = NULL; - } + if (err) + goto put_filters_out; + return err; + +put_filters_out: + kobject_put(&filters->kobj); + probe->filters = NULL; +del_preps_out: + kobject_del(&preps->kobj); +put_preps_out: + kobject_put(&preps->kobj); + probe->preps = NULL; return err; } static void damon_sysfs_probe_rm_dirs(struct damon_sysfs_probe *probe) { + if (probe->preps) + kobject_put(&probe->preps->kobj); if (probe->filters) { damon_sysfs_filters_rm_dirs(probe->filters); kobject_put(&probe->filters->kobj); _ 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