linux-kernel - [PATCH 1/8] mm/damon/sysfs-schemes: let damon_sysfs_scheme_set_filters() be used for different named directories

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Message-Id: <20250305222733.59089-2-sj@kernel.org>
Date: Wed,  5 Mar 2025 14:27:26 -0800
From: SeongJae Park <sj@...nel.org>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: SeongJae Park <sj@...nel.org>,
	damon@...ts.linux.dev,
	kernel-team@...a.com,
	linux-kernel@...r.kernel.org,
	linux-mm@...ck.org
Subject: [PATCH 1/8] mm/damon/sysfs-schemes: let damon_sysfs_scheme_set_filters() be used for different named directories

damon_sysfs_scheme_set_filters() is using a hard-coded directory name,
"filters".  Refactor for general named directories of same files
hierarchy, to use from upcoming changes for adding sibling directories
having files same to those of "filters", and named as "core_filters" and
"ops_filters".

Signed-off-by: SeongJae Park <sj@...nel.org>
---
 mm/damon/sysfs-schemes.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/mm/damon/sysfs-schemes.c b/mm/damon/sysfs-schemes.c
index 66a1c46cee84..541ca5887b24 100644
--- a/mm/damon/sysfs-schemes.c
+++ b/mm/damon/sysfs-schemes.c
@@ -1604,7 +1604,9 @@ static int damon_sysfs_scheme_set_watermarks(struct damon_sysfs_scheme *scheme)
 	return err;
 }
 
-static int damon_sysfs_scheme_set_filters(struct damon_sysfs_scheme *scheme)
+static int damon_sysfs_scheme_set_filters(struct damon_sysfs_scheme *scheme,
+		const char *name,
+		struct damon_sysfs_scheme_filters **filters_ptr)
 {
 	struct damon_sysfs_scheme_filters *filters =
 		damon_sysfs_scheme_filters_alloc();
@@ -1614,11 +1616,11 @@ static int damon_sysfs_scheme_set_filters(struct damon_sysfs_scheme *scheme)
 		return -ENOMEM;
 	err = kobject_init_and_add(&filters->kobj,
 			&damon_sysfs_scheme_filters_ktype, &scheme->kobj,
-			"filters");
+			name);
 	if (err)
 		kobject_put(&filters->kobj);
 	else
-		scheme->filters = filters;
+		*filters_ptr = filters;
 	return err;
 }
 
@@ -1670,7 +1672,8 @@ static int damon_sysfs_scheme_add_dirs(struct damon_sysfs_scheme *scheme)
 	err = damon_sysfs_scheme_set_watermarks(scheme);
 	if (err)
 		goto put_quotas_access_pattern_out;
-	err = damon_sysfs_scheme_set_filters(scheme);
+	err = damon_sysfs_scheme_set_filters(scheme, "filters",
+			&scheme->filters);
 	if (err)
 		goto put_watermarks_quotas_access_pattern_out;
 	err = damon_sysfs_scheme_set_stats(scheme);
-- 
2.39.5