From nobody Sun Feb 8 12:40:46 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 0D1F81B0413; Thu, 9 Jan 2025 17:51:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736445104; cv=none; b=XSqheAnQ9E61s/4mdkh00nH8wXvY0p4Z+3rcMBaP848mT+VSYc/chbSphxdTQ43L2it/NKaaO+iSm4vZbmxqJhHlSUXWBskNMU2sIE+pnfUF75fDGKj2cg0w/aRE5dk9wzEfacl+pFWaySanlv4zOmQS4Op9Z7DmSXqC5ZltKI8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736445104; c=relaxed/simple; bh=qmaIUnx59dUjwJkr4G+Ggfwt4z+WkdllmHRXE6wuoJA=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=AXWujfUR2PpVWE0ropx9hDc9/GnZwWDWmwIkE2SOiUciAjKbSuKWATWz2UyaTUYiF2ZpPeBbfWmKOFBIPZuhiRGlraLa1JWBLvo9+xhX6Quwj8CsGqE4GAPr4oRXBBWeupIJbUNNrHMscBCnMBjA0toa1oq59tG0WWrM0Aoan6M= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=P8NlydKr; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="P8NlydKr" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6E877C4CEE2; Thu, 9 Jan 2025 17:51:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1736445103; bh=qmaIUnx59dUjwJkr4G+Ggfwt4z+WkdllmHRXE6wuoJA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=P8NlydKrZFuP8R5wAjf7JbfscwIPB64jz+BGzzEkjRkiQZqySwJ97bJzTajtYLk+F 0xXmae4ZRT78XzzUs1KT7FmLdBlxWrn0RMcxKFtG7TO2kA6sR8YMDUTmrws2e3ycFG 2ttU3NmCipytEE+qOvbm25XhIsMPT6hQUQ2YCu6FSo4LXdibz9bnQ1QqJ9wYOE4Cjs rstP5YUKEr+Ekx6gMov2qd3AWBoffGg9Rd/b3dZUMjRaTLR+SPsAaATPfHLCno6uNc jQhulsnR2GHmgyX6YJVmV+IWHp8k6De+eqP+SueNmgk84xgIVzB/CHwqp6WhUiAnLT U7/MjPM6Y6uSw== From: SeongJae Park To: Andrew Morton Cc: SeongJae Park , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH v2 06/10] mm/damon/sysfs-schemes: add a file for setting damos_filter->allow Date: Thu, 9 Jan 2025 09:51:22 -0800 Message-Id: <20250109175126.57878-7-sj@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250109175126.57878-1-sj@kernel.org> References: <20250109175126.57878-1-sj@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Only kernel-space DAMON API users can use inclusive DAMOS filters. Add a sysfs file named 'allow' under DAMOS filter directory of DAMON sysfs interface, to let the user-space users use inclusive DAMOS filters. Signed-off-by: SeongJae Park --- mm/damon/sysfs-schemes.c | 32 +++++++++++++++++++++++++++++++- 1 file changed, 31 insertions(+), 1 deletion(-) diff --git a/mm/damon/sysfs-schemes.c b/mm/damon/sysfs-schemes.c index 9a883e8aea1c..98f93ae9f59e 100644 --- a/mm/damon/sysfs-schemes.c +++ b/mm/damon/sysfs-schemes.c @@ -313,6 +313,7 @@ struct damon_sysfs_scheme_filter { struct kobject kobj; enum damos_filter_type type; bool matching; + bool allow; char *memcg_path; struct damon_addr_range addr_range; int target_idx; @@ -385,6 +386,30 @@ static ssize_t matching_store(struct kobject *kobj, return count; } =20 +static ssize_t allow_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + struct damon_sysfs_scheme_filter *filter =3D container_of(kobj, + struct damon_sysfs_scheme_filter, kobj); + + return sysfs_emit(buf, "%c\n", filter->allow ? 'Y' : 'N'); +} + +static ssize_t allow_store(struct kobject *kobj, + struct kobj_attribute *attr, const char *buf, size_t count) +{ + struct damon_sysfs_scheme_filter *filter =3D container_of(kobj, + struct damon_sysfs_scheme_filter, kobj); + bool allow; + int err =3D kstrtobool(buf, &allow); + + if (err) + return err; + + filter->allow =3D allow; + return count; +} + static ssize_t memcg_path_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { @@ -482,6 +507,9 @@ static struct kobj_attribute damon_sysfs_scheme_filter_= type_attr =3D static struct kobj_attribute damon_sysfs_scheme_filter_matching_attr =3D __ATTR_RW_MODE(matching, 0600); =20 +static struct kobj_attribute damon_sysfs_scheme_filter_allow_attr =3D + __ATTR_RW_MODE(allow, 0600); + static struct kobj_attribute damon_sysfs_scheme_filter_memcg_path_attr =3D __ATTR_RW_MODE(memcg_path, 0600); =20 @@ -497,6 +525,7 @@ static struct kobj_attribute damon_sysfs_scheme_filter_= damon_target_idx_attr =3D static struct attribute *damon_sysfs_scheme_filter_attrs[] =3D { &damon_sysfs_scheme_filter_type_attr.attr, &damon_sysfs_scheme_filter_matching_attr.attr, + &damon_sysfs_scheme_filter_allow_attr.attr, &damon_sysfs_scheme_filter_memcg_path_attr.attr, &damon_sysfs_scheme_filter_addr_start_attr.attr, &damon_sysfs_scheme_filter_addr_end_attr.attr, @@ -1901,7 +1930,8 @@ static int damon_sysfs_add_scheme_filters(struct damo= s *scheme, sysfs_filters->filters_arr[i]; struct damos_filter *filter =3D damos_new_filter(sysfs_filter->type, - sysfs_filter->matching, false); + sysfs_filter->matching, + sysfs_filter->allow); int err; =20 if (!filter) --=20 2.39.5