Extend DAMON sysfs to support DAMOS_QUOTA_NODE_MEMCG_FREE_BP.

Signed-off-by: SeongJae Park <sj@kernel.org>
---
 mm/damon/sysfs-schemes.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/mm/damon/sysfs-schemes.c b/mm/damon/sysfs-schemes.c
index c679e62fd4b9..c98cf4bd2fbb 100644
--- a/mm/damon/sysfs-schemes.c
+++ b/mm/damon/sysfs-schemes.c
@@ -1034,6 +1034,10 @@ struct damos_sysfs_qgoal_metric_name damos_sysfs_qgoal_metric_names[] = {
 		.metric = DAMOS_QUOTA_NODE_MEMCG_USED_BP,
 		.name = "node_memcg_used_bp",
 	},
+	{
+		.metric = DAMOS_QUOTA_NODE_MEMCG_FREE_BP,
+		.name = "node_memcg_free_bp",
+	},
 };
 
 static ssize_t target_metric_show(struct kobject *kobj,
@@ -2552,6 +2556,7 @@ static int damos_sysfs_add_quota_score(
 			goal->nid = sysfs_goal->nid;
 			break;
 		case DAMOS_QUOTA_NODE_MEMCG_USED_BP:
+		case DAMOS_QUOTA_NODE_MEMCG_FREE_BP:
 			err = damon_sysfs_memcg_path_to_id(
 					sysfs_goal->path, &goal->memcg_id);
 			if (err) {
-- 
2.39.5