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

Xin Hao
2022-09-19T15:12:20Z

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@linux.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