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 A17363C1973; Tue, 15 Sep 2026 14:34:08 +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=1789482850; cv=none; b=Z1IC4jMgpzckpjkhbhX+WqcAF3W6S7859keo6+sPw/OY0dYKMyP7Fa7BKASHI63I8mcimK7sZWPtRdYEU0qpHdTwkfl3EHjtFg44D3iKQqYDTdoFjLjrqlY5NqC0+S4Rvvzp7urgXZtAHgPdh516Gq+inF/++TojU9b3VxjoAg8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789482850; c=relaxed/simple; bh=KW791MgCtRerwlblO2XlLUV0YVIRvjv/GWAiew+3j6k=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=nI1m92nZXerYy6/+3bqw6svqe+mpH3B1qdkWLiou9tHtR0IfS2qapKHoDBrTITC/g3KPmreX6Eghq3U/ikGdgLYUN54G0RpKFxq0zgezB9v6K6cfxg2nrbr197Agn778NN+FoXAy18pCqkL6qvA18/eSS0cpWTOMU0xIuYnl7dU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=MS7nR5t2; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="MS7nR5t2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3DFE81F0089B; Tue, 15 Sep 2026 14:34:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1789482848; bh=g5VdpOGRYXrXyCrSePa8puxBW/6Uq97itYKIwT0a6WQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=MS7nR5t2sK3dn3WFELBnQbMSl5v710rVTzQ9QYNt/Gje0Cq41caE7zg2z6zSDF4od G/F8ZIeSUqPMAyiLuCsGT/m/loqW4TQxFq0N05UjUBLGCsbauHKfxSRSeLB7gnZM+o UU3aavsIHZKJ8E0IFAXV0Vr1HnyHK2/Ywbju4iUe4QZ+srTCO5wmrO2f8Aqu5alcmA 4z7moXaTsmn/4kUdnJ1W0puO8ofGBA78ttcFziv9RSD5h0DD4XvaZtHT83DhfAfsdW 4qOmmabgVJ21Sv5IpdntekX/4/CtEYCw7Hbyk0a2OYKfKY89ijAAdZ2/SRhi1odUKt DIolL5YLS/hTg== From: SJ Park To: Andrew Morton Cc: SJ Park , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 4/8] mm/damon/sysfs: add min,max files under probe filter directory Date: Tue, 15 Sep 2026 07:33:53 -0700 Message-ID: <20260915143359.91472-5-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260915143359.91472-1-sj@kernel.org> References: <20260915143359.91472-1-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: 8bit In future, DAMON sysfs interface will support data attribute probe filter types that have range arguments like the newly added hugepage_size type filter. To prepare such supports, add two new DAMON sysfs files, min and max, under the probe filter directory. Signed-off-by: SJ Park --- mm/damon/sysfs.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c index 51fa506c879b0..8e8d89b8ed981 100644 --- a/mm/damon/sysfs.c +++ b/mm/damon/sysfs.c @@ -975,6 +975,8 @@ struct damon_sysfs_filter { bool matching; bool allow; char *path; + unsigned long range_min; + unsigned long range_max; }; static struct damon_sysfs_filter *damon_sysfs_filter_alloc(void) @@ -1127,6 +1129,44 @@ static ssize_t path_store(struct kobject *kobj, return count; } +static ssize_t min_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + struct damon_sysfs_filter *filter = container_of(kobj, + struct damon_sysfs_filter, kobj); + + return sysfs_emit(buf, "%lu\n", filter->range_min); +} + +static ssize_t min_store(struct kobject *kobj, + struct kobj_attribute *attr, const char *buf, size_t count) +{ + struct damon_sysfs_filter *filter = container_of(kobj, + struct damon_sysfs_filter, kobj); + int err = kstrtoul(buf, 0, &filter->range_min); + + return err ? err : count; +} + +static ssize_t max_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + struct damon_sysfs_filter *filter = container_of(kobj, + struct damon_sysfs_filter, kobj); + + return sysfs_emit(buf, "%lu\n", filter->range_max); +} + +static ssize_t max_store(struct kobject *kobj, + struct kobj_attribute *attr, const char *buf, size_t count) +{ + struct damon_sysfs_filter *filter = container_of(kobj, + struct damon_sysfs_filter, kobj); + int err = kstrtoul(buf, 0, &filter->range_max); + + return err ? err : count; +} + static void damon_sysfs_filter_release(struct kobject *kobj) { struct damon_sysfs_filter *filter = container_of(kobj, @@ -1148,11 +1188,19 @@ static struct kobj_attribute damon_sysfs_filter_allow_attr = static struct kobj_attribute damon_sysfs_filter_path_attr = __ATTR_RW_MODE(path, 0600); +static struct kobj_attribute damon_sysfs_filter_min_attr = + __ATTR_RW_MODE(min, 0600); + +static struct kobj_attribute damon_sysfs_filter_max_attr = + __ATTR_RW_MODE(max, 0600); + static struct attribute *damon_sysfs_filter_attrs[] = { &damon_sysfs_filter_type_attr.attr, &damon_sysfs_filter_matching_attr.attr, &damon_sysfs_filter_allow_attr.attr, &damon_sysfs_filter_path_attr.attr, + &damon_sysfs_filter_min_attr.attr, + &damon_sysfs_filter_max_attr.attr, NULL, }; ATTRIBUTE_GROUPS(damon_sysfs_filter); -- 2.47.3