diff options
Diffstat (limited to 'kernel/bpf/bpf_task_storage.c')
| -rw-r--r-- | kernel/bpf/bpf_task_storage.c | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/kernel/bpf/bpf_task_storage.c b/kernel/bpf/bpf_task_storage.c index 5da7bed0f5f6..e9014dc62682 100644 --- a/kernel/bpf/bpf_task_storage.c +++ b/kernel/bpf/bpf_task_storage.c @@ -102,7 +102,7 @@ void bpf_task_storage_free(struct task_struct *task) */ bpf_selem_unlink_map(selem); free_task_storage = bpf_selem_unlink_storage_nolock( - local_storage, selem, false); + local_storage, selem, false, false); } raw_spin_unlock_irqrestore(&local_storage->lock, flags); bpf_task_storage_unlock(); @@ -174,7 +174,8 @@ static int bpf_pid_task_storage_update_elem(struct bpf_map *map, void *key, bpf_task_storage_lock(); sdata = bpf_local_storage_update( - task, (struct bpf_local_storage_map *)map, value, map_flags); + task, (struct bpf_local_storage_map *)map, value, map_flags, + GFP_ATOMIC); bpf_task_storage_unlock(); err = PTR_ERR_OR_ZERO(sdata); @@ -191,7 +192,7 @@ static int task_storage_delete(struct task_struct *task, struct bpf_map *map) if (!sdata) return -ENOENT; - bpf_selem_unlink(SELEM(sdata)); + bpf_selem_unlink(SELEM(sdata), true); return 0; } @@ -226,8 +227,9 @@ out: return err; } -BPF_CALL_4(bpf_task_storage_get, struct bpf_map *, map, struct task_struct *, - task, void *, value, u64, flags) +/* *gfp_flags* is a hidden argument provided by the verifier */ +BPF_CALL_5(bpf_task_storage_get, struct bpf_map *, map, struct task_struct *, + task, void *, value, u64, flags, gfp_t, gfp_flags) { struct bpf_local_storage_data *sdata; @@ -250,7 +252,7 @@ BPF_CALL_4(bpf_task_storage_get, struct bpf_map *, map, struct task_struct *, (flags & BPF_LOCAL_STORAGE_GET_F_CREATE)) sdata = bpf_local_storage_update( task, (struct bpf_local_storage_map *)map, value, - BPF_NOEXIST); + BPF_NOEXIST, gfp_flags); unlock: bpf_task_storage_unlock(); @@ -305,7 +307,7 @@ static void task_storage_map_free(struct bpf_map *map) bpf_local_storage_map_free(smap, &bpf_task_storage_busy); } -static int task_storage_map_btf_id; +BTF_ID_LIST_SINGLE(task_storage_map_btf_ids, struct, bpf_local_storage_map) const struct bpf_map_ops task_storage_map_ops = { .map_meta_equal = bpf_map_meta_equal, .map_alloc_check = bpf_local_storage_map_alloc_check, @@ -316,8 +318,7 @@ const struct bpf_map_ops task_storage_map_ops = { .map_update_elem = bpf_pid_task_storage_update_elem, .map_delete_elem = bpf_pid_task_storage_delete_elem, .map_check_btf = bpf_local_storage_map_check_btf, - .map_btf_name = "bpf_local_storage_map", - .map_btf_id = &task_storage_map_btf_id, + .map_btf_id = &task_storage_map_btf_ids[0], .map_owner_storage_ptr = task_storage_ptr, }; |