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UPSTREAM: mm/damon/sysfs: remove parameters of damon_sysfs_region_alloc()

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'damon_sysfs_region_alloc()' is always called with zero-filled 'struct
damon_addr_range', because the start and end addresses should set by
users.  Remove unnecessary parameters of the function and simplify the
body by using 'kzalloc()'.

Link: https://lkml.kernel.org/r/20221026225943.100429-7-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

(cherry picked from commit 1f71981408)

Bug: 300502883
Change-Id: I6fa54a7474851598fda50a07f5b6b2465bf4cd1f
Signed-off-by: cui yangpei <cuiyangpei@xiaomi.com>
This commit is contained in:
SeongJae Park
2022-10-26 22:59:37 +00:00
committed by Suren Baghdasaryan
parent 19364f11a4
commit b7fc8d59a5
1 changed files with 3 additions and 11 deletions
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14
mm/damon/sysfs.c
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@@ -1065,17 +1065,9 @@ struct damon_sysfs_region {
struct damon_addr_range ar; struct damon_addr_range ar;
}; };
static struct damon_sysfs_region *damon_sysfs_region_alloc( static struct damon_sysfs_region *damon_sysfs_region_alloc(void)
struct damon_addr_range ar)
{ {
struct damon_sysfs_region *region = kmalloc(sizeof(*region), return kzalloc(sizeof(struct damon_sysfs_region), GFP_KERNEL);
GFP_KERNEL);
if (!region)
return NULL;
region->kobj = (struct kobject){};
region->ar = ar;
return region;
} }
static ssize_t start_show(struct kobject *kobj, struct kobj_attribute *attr, static ssize_t start_show(struct kobject *kobj, struct kobj_attribute *attr,
@@ -1184,7 +1176,7 @@ static int damon_sysfs_regions_add_dirs(struct damon_sysfs_regions *regions,
regions->regions_arr = regions_arr; regions->regions_arr = regions_arr;
for (i = 0; i < nr_regions; i++) { for (i = 0; i < nr_regions; i++) {
region = damon_sysfs_region_alloc((struct damon_addr_range){}); region = damon_sysfs_region_alloc();
if (!region) { if (!region) {
damon_sysfs_regions_rm_dirs(regions); damon_sysfs_regions_rm_dirs(regions);
return -ENOMEM; return -ENOMEM;