From: SeongJae Park Date: Fri, 17 Oct 2025 21:26:57 +0000 (-0700) Subject: mm/damon/sysfs-schemes: support DAMOS_QUOTA_NODE_MEMCG_USED_BP X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=7f89ed4f0a9f3f72cb044c70d6310b30988d4140;p=users%2Fjedix%2Flinux-maple.git mm/damon/sysfs-schemes: support DAMOS_QUOTA_NODE_MEMCG_USED_BP Add support of DAMOS_QUOTA_NODE_MEMCG_USED_BP. For this, extend quota goal metric inputs for the new metric, and update DAMOS core layer request construction logic to set the target cgroup, which is specified by the user, via the 'path' file. Link: https://lkml.kernel.org/r/20251017212706.183502-6-sj@kernel.org Signed-off-by: SeongJae Park Signed-off-by: Andrew Morton --- diff --git a/mm/damon/sysfs-schemes.c b/mm/damon/sysfs-schemes.c index 2c440a2b80e6..c679e62fd4b9 100644 --- a/mm/damon/sysfs-schemes.c +++ b/mm/damon/sysfs-schemes.c @@ -1030,6 +1030,10 @@ struct damos_sysfs_qgoal_metric_name damos_sysfs_qgoal_metric_names[] = { .metric = DAMOS_QUOTA_NODE_MEM_FREE_BP, .name = "node_mem_free_bp", }, + { + .metric = DAMOS_QUOTA_NODE_MEMCG_USED_BP, + .name = "node_memcg_used_bp", + }, }; static ssize_t target_metric_show(struct kobject *kobj, @@ -2526,7 +2530,7 @@ static int damos_sysfs_add_quota_score( struct damos_quota *quota) { struct damos_quota_goal *goal; - int i; + int i, err; for (i = 0; i < sysfs_goals->nr; i++) { struct damos_sysfs_quota_goal *sysfs_goal = @@ -2547,6 +2551,15 @@ static int damos_sysfs_add_quota_score( case DAMOS_QUOTA_NODE_MEM_FREE_BP: goal->nid = sysfs_goal->nid; break; + case DAMOS_QUOTA_NODE_MEMCG_USED_BP: + err = damon_sysfs_memcg_path_to_id( + sysfs_goal->path, &goal->memcg_id); + if (err) { + damos_destroy_quota_goal(goal); + return err; + } + goal->nid = sysfs_goal->nid; + break; default: break; }