From: SeongJae Park <sj@xxxxxxxxxx>
Pass user-specified multiple DAMOS action destinations and their weights
to DAMON core API, so that user requests can really work.
Signed-off-by: SeongJae Park <sj@xxxxxxxxxx>
Signed-off-by: Bijan Tabatabai <bijantabatab@xxxxxxxxxx>
---
mm/damon/sysfs-schemes.c | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/mm/damon/sysfs-schemes.c b/mm/damon/sysfs-schemes.c
index b9434cdaacdc..74056bcd6a2c 100644
--- a/mm/damon/sysfs-schemes.c
+++ b/mm/damon/sysfs-schemes.c
@@ -2576,6 +2576,29 @@ void damos_sysfs_update_effective_quotas(
}
}
+static int damos_sysfs_add_migrate_dest(struct damos *scheme,
+ struct damos_sysfs_dests *sysfs_dests)
+{
+ struct damos_migrate_dests *dests = &scheme->migrate_dests;
+ int i;
+
+ dests->node_id_arr = kmalloc_array(sysfs_dests->nr,
+ sizeof(*dests->node_id_arr), GFP_KERNEL);
+ if (!dests->node_id_arr)
+ return -ENOMEM;
+ dests->weight_arr = kmalloc_array(sysfs_dests->nr,
+ sizeof(*dests->weight_arr), GFP_KERNEL);
+ if (!dests->weight_arr)
+ /* ->node_id_arr will be freed by scheme destruction */
+ return -ENOMEM;
+ for (i = 0; i < sysfs_dests->nr; i++) {
+ dests->node_id_arr[i] = sysfs_dests->dests_arr[i]->id;
+ dests->weight_arr[i] = sysfs_dests->dests_arr[i]->weight;
+ }
+ dests->nr_dests = sysfs_dests->nr;
+ return 0;
+}
+
static struct damos *damon_sysfs_mk_scheme(
struct damon_sysfs_scheme *sysfs_scheme)
{
@@ -2638,6 +2661,11 @@ static struct damos *damon_sysfs_mk_scheme(
damon_destroy_scheme(scheme);
return NULL;
}
+ err = damos_sysfs_add_migrate_dest(scheme, sysfs_scheme->dests);
+ if (err) {
+ damon_destroy_scheme(scheme);
+ return NULL;
+ }
return scheme;
}
--
2.43.5
