105 static void damon_sysfs_regions_rm_dirs(struct damon_sysfs_regions *regions)  in damon_sysfs_regions_rm_dirs()  argument
107 	struct damon_sysfs_region **regions_arr = regions->regions_arr;  in damon_sysfs_regions_rm_dirs()
110 	for (i = 0; i < regions->nr; i++)  in damon_sysfs_regions_rm_dirs()
112 	regions->nr = 0;  in damon_sysfs_regions_rm_dirs()
114 	regions->regions_arr = NULL;  in damon_sysfs_regions_rm_dirs()
117 static int damon_sysfs_regions_add_dirs(struct damon_sysfs_regions *regions,  in damon_sysfs_regions_add_dirs()  argument
123 	damon_sysfs_regions_rm_dirs(regions);  in damon_sysfs_regions_add_dirs()
131 	regions->regions_arr = regions_arr;  in damon_sysfs_regions_add_dirs()
136 			damon_sysfs_regions_rm_dirs(regions);  in damon_sysfs_regions_add_dirs()
141 				&damon_sysfs_region_ktype, &regions->kobj,  in damon_sysfs_regions_add_dirs()
145 			damon_sysfs_regions_rm_dirs(regions);  in damon_sysfs_regions_add_dirs()
150 		regions->nr++;  in damon_sysfs_regions_add_dirs()
158 	struct damon_sysfs_regions *regions = container_of(kobj,  in nr_regions_show()  local
161 	return sysfs_emit(buf, "%d\n", regions->nr);  in nr_regions_show()
167 	struct damon_sysfs_regions *regions;  in nr_regions_store()  local
175 	regions = container_of(kobj, struct damon_sysfs_regions, kobj);  in nr_regions_store()
179 	err = damon_sysfs_regions_add_dirs(regions, nr);  in nr_regions_store()
213 	struct damon_sysfs_regions *regions;  member
225 	struct damon_sysfs_regions *regions = damon_sysfs_regions_alloc();  in damon_sysfs_target_add_dirs()  local
228 	if (!regions)  in damon_sysfs_target_add_dirs()
231 	err = kobject_init_and_add(&regions->kobj, &damon_sysfs_regions_ktype,  in damon_sysfs_target_add_dirs()
234 		kobject_put(&regions->kobj);  in damon_sysfs_target_add_dirs()
236 		target->regions = regions;  in damon_sysfs_target_add_dirs()
242 	damon_sysfs_regions_rm_dirs(target->regions);  in damon_sysfs_target_rm_dirs()
243 	kobject_put(&target->regions->kobj);  in damon_sysfs_target_rm_dirs()
1410 	return damon_sysfs_set_regions(t, sys_target->regions,  in damon_sysfs_add_target()