mm/damon/sysfs-schemes: support DAMOS_QUOTA_NODE_MEMCG_FREE_BP

Extend DAMON sysfs to support DAMOS_QUOTA_NODE_MEMCG_FREE_BP.

Link: https://lkml.kernel.org/r/20251017212706.183502-8-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/mm/damon/sysfs-schemes.c b/mm/damon/sysfs-schemes.c
index c679e62..c98cf4b 100644 (file)
--- 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) {