diff options
| -rw-r--r-- | kernel/bpf/hashtab.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/kernel/bpf/hashtab.c b/kernel/bpf/hashtab.c index 1815e97d4c9c..278da031c91a 100644 --- a/kernel/bpf/hashtab.c +++ b/kernel/bpf/hashtab.c @@ -99,6 +99,7 @@ struct bpf_htab { u32 n_buckets; /* number of hash buckets */ u32 elem_size; /* size of each element in bytes */ u32 hashrnd; + struct lock_class_key lockdep_key; }; /* each htab element is struct htab_elem + key + value */ @@ -136,12 +137,18 @@ static void htab_init_buckets(struct bpf_htab *htab) { unsigned i; + lockdep_register_key(&htab->lockdep_key); for (i = 0; i < htab->n_buckets; i++) { INIT_HLIST_NULLS_HEAD(&htab->buckets[i].head, i); - if (htab_use_raw_lock(htab)) + if (htab_use_raw_lock(htab)) { raw_spin_lock_init(&htab->buckets[i].raw_lock); - else + lockdep_set_class(&htab->buckets[i].raw_lock, + &htab->lockdep_key); + } else { spin_lock_init(&htab->buckets[i].lock); + lockdep_set_class(&htab->buckets[i].lock, + &htab->lockdep_key); + } } } @@ -1312,6 +1319,7 @@ static void htab_map_free(struct bpf_map *map) free_percpu(htab->extra_elems); bpf_map_area_free(htab->buckets); + lockdep_unregister_key(&htab->lockdep_key); kfree(htab); } |