From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794774547; b=aMZQooR6jB4JMRHGwk5eyg5wa1NAHGFxllUjpTDHEa1QvcFSWtCSlT7yoVLjLZUxT4Qy ziLNiqQVNB4yIE30MOOPETYRiE5blhK69GNbZCx0lLh7p15kq4PIkQQxhgcqcYZN+zYwh wCvAwgZ3HcdwsMSVpcya0sYbcI/MYWucStL4+8aRwRz5OiluVViuI0hBf3yUAjj6OKrc2 kiCPvEfmeb7c4uBH7CqBmPR//Syebf8byFkwG+8Tnz2c42uZWkU+gnI0kYsfqAhXW0j1/ J20kBGXzndCPYGCRmzEcA1YGRwF54TKf+1I4O9OCnPmw9Xk6KtUEuPrQo591SPm+W8A== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794774547; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:MIME-Version:Content-Transfer-Encoding; bh=5kDNeq0YIzH6aqgKl3Y8N9odneRfo3uo0UcuJ/hi1Pw=; b=NBaeSv85/dWucc3TK6Yfyg4Y4T/UDnjLswRxrh1wPC3JXQY+JrZBm3SMHMuja/NAzxFL Id5iOjPWudCbl9NZhezX+IgHelk9iPWqBccYrfamJlvegU3DPUDji2CDwcFtlVjDao4wa M3kJ2IK7qQEXcdwd4z1rV2rBQ+gI0kLiqtIgkbRBClDiEHaqxo6GPa6EjgObLcB4WIiUE KYxCqfnk74H7DUf6y+znVrk+IVkJXkVB/8zKYd5/b5DdUBz5onE/UzdlnXl8XvBhbmNgG fFhnm3R5SH65wz7drtG9OyzxQml2mLwkjlX5BBTD6sqr+pN0QESMsOgsIPvVJtzTq4g== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=fZQnASml; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A19E3606A880; Sun, 15 Nov 2026 20:29:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=fZQnASml Received: by smtp.kernel.org (Postfix) with ESMTPSA id 571991F000D0; Sun, 15 Nov 2026 20:29:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794774547; bh=5kDNeq0YIzH6aqgKl3Y8N9odneRfo3uo0UcuJ/hi1Pw=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=fZQnASml0Lbv9oQ91AVKMKsLm51A6Ek6efXwaBqXBmtQP9KMVxl6V/FCJ/asSYFjZ V3gepos+fk3RlT5awLjHCbR1C/MTe8l4nhuS5x0gxzSwqXf+kZn6UhIyXY93jCfUIL /2rZwsxtO0FMLV0u4yUp8rbyZHgw2h6zNFJexIFZ4/KrCS+3zUf1IBb7HF/lunCFCX S3dFDvwc6ZRirLgKRBsCSSb4eU3oEGBgGSErNjYfflHCGSWn2JTjM/MoCUrjCuBJOC 6mvK1EbnaVDF/7Tr3J6u+ADUDn6D36lyTL1RxM3kuv9zbRv5geJ5NxE8zRuvsEY8PZ aN+PHK9TFxQGQ== From: SJ Park To: Cc: SJ Park , Andrew Morton , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH 15/27] mm/damon/sysfs: add filter_report_type file under probe filter directory Date: Sun, 15 Nov 2026 12:28:33 -0800 Message-ID: <20261115202849.99134-16-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20261115202849.99134-1-sj@kernel.org> References: <20261115202849.99134-1-sj@kernel.org> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add a sysfs file, filter_report_type, under probe filter directory. It receives damon_report_type from the user. Reuse damon_sysfs_report_type_name struct for user keyword matching. Move the definition instead of forward declaration, as the code change is small enough at this stage. Signed-off-by: SJ Park --- mm/damon/sysfs.c | 61 +++++++++++++++++++++++++++++++++++++++++------- 1 file changed, 52 insertions(+), 9 deletions(-) diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c index 7cdbe2fedf7d8..ca971cf1dcf6d 100644 --- a/mm/damon/sysfs.c +++ b/mm/damon/sysfs.c @@ -977,6 +977,7 @@ struct damon_sysfs_filter { char *path; unsigned long range_min; unsigned long range_max; + enum damon_report_type report_type; }; static struct damon_sysfs_filter *damon_sysfs_filter_alloc(void) @@ -1175,6 +1176,53 @@ static ssize_t max_store(struct kobject *kobj, return err ? err : count; } +struct damon_sysfs_report_type_name { + enum damon_report_type type; + char *name; +}; + +static const struct damon_sysfs_report_type_name +damon_sysfs_report_type_names[] = { +}; + +static ssize_t filter_report_type_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + struct damon_sysfs_filter *filter = container_of(kobj, + struct damon_sysfs_filter, kobj); + int i; + + for (i = 0; i < ARRAY_SIZE(damon_sysfs_report_type_names); i++) { + const struct damon_sysfs_report_type_name *type_name; + + type_name = &damon_sysfs_report_type_names[i]; + if (type_name->type == filter->report_type) + return sysfs_emit(buf, "%s\n", type_name->name); + } + return -EINVAL; +} + +static ssize_t filter_report_type_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); + ssize_t ret = -EINVAL; + int i; + + for (i = 0; i < ARRAY_SIZE(damon_sysfs_report_type_names); i++) { + const struct damon_sysfs_report_type_name *type_name; + + type_name = &damon_sysfs_report_type_names[i]; + if (sysfs_streq(buf, type_name->name)) { + filter->report_type = type_name->type; + ret = count; + break; + } + } + return ret; +} + static void damon_sysfs_filter_release(struct kobject *kobj) { struct damon_sysfs_filter *filter = container_of(kobj, @@ -1202,6 +1250,9 @@ static struct kobj_attribute damon_sysfs_filter_min_attr = static struct kobj_attribute damon_sysfs_filter_max_attr = __ATTR_RW_MODE(max, 0600); +static struct kobj_attribute damon_sysfs_filter_filter_report_type_attr = + __ATTR_RW_MODE(filter_report_type, 0600); + static struct attribute *damon_sysfs_filter_attrs[] = { &damon_sysfs_filter_type_attr.attr, &damon_sysfs_filter_matching_attr.attr, @@ -1209,6 +1260,7 @@ static struct attribute *damon_sysfs_filter_attrs[] = { &damon_sysfs_filter_path_attr.attr, &damon_sysfs_filter_min_attr.attr, &damon_sysfs_filter_max_attr.attr, + &damon_sysfs_filter_filter_report_type_attr.attr, NULL, }; ATTRIBUTE_GROUPS(damon_sysfs_filter); @@ -2992,15 +3044,6 @@ static struct damon_sysfs_producer *damon_sysfs_producer_alloc(void) return kzalloc_obj(struct damon_sysfs_producer); } -struct damon_sysfs_report_type_name { - enum damon_report_type type; - char *name; -}; - -static const struct damon_sysfs_report_type_name -damon_sysfs_report_type_names[] = { -}; - static ssize_t report_type_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { -- 2.47.3