linux-kernel - [PATCH v1 2/2] mm/damon/sysfs: use kzmalloc instead kmalloc to simplify codes

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Date:   Mon, 19 Sep 2022 23:12:01 +0800
From:   Xin Hao <xhao@...ux.alibaba.com>
To:     sj@...nel.org
Cc:     akpm@...ux-foundation.org, damon@...ts.linux.dev,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        xhao@...ux.alibaba.com
Subject: [PATCH v1 2/2] mm/damon/sysfs: use kzmalloc instead kmalloc to simplify codes

In damon_sysfs_access_pattern_alloc() adn damon_sysfs_attrs_alloc(),
we can use kzmalloc to alloc instance of the related structs, This makes
the function code much cleaner.

Signed-off-by: Xin Hao <xhao@...ux.alibaba.com>
---
 mm/damon/sysfs.c | 15 ++-------------
 1 file changed, 2 insertions(+), 13 deletions(-)

diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c
index b852a75b9f39..06154ece7960 100644
--- a/mm/damon/sysfs.c
+++ b/mm/damon/sysfs.c
@@ -657,13 +657,7 @@ struct damon_sysfs_access_pattern {
 static
 struct damon_sysfs_access_pattern *damon_sysfs_access_pattern_alloc(void)
 {
-	struct damon_sysfs_access_pattern *access_pattern =
-		kmalloc(sizeof(*access_pattern), GFP_KERNEL);
-
-	if (!access_pattern)
-		return NULL;
-	access_pattern->kobj = (struct kobject){};
-	return access_pattern;
+	return kzalloc(sizeof(struct damon_sysfs_access_pattern), GFP_KERNEL);
 }
 
 static int damon_sysfs_access_pattern_add_range_dir(
@@ -1620,12 +1614,7 @@ struct damon_sysfs_attrs {
 
 static struct damon_sysfs_attrs *damon_sysfs_attrs_alloc(void)
 {
-	struct damon_sysfs_attrs *attrs = kmalloc(sizeof(*attrs), GFP_KERNEL);
-
-	if (!attrs)
-		return NULL;
-	attrs->kobj = (struct kobject){};
-	return attrs;
+	return kzalloc(sizeof(struct damon_sysfs_attrs), GFP_KERNEL);
 }
 
 static int damon_sysfs_attrs_add_dirs(struct damon_sysfs_attrs *attrs)
-- 
2.31.0