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| author | Alexei Starovoitov | 2019-02-01 00:40:05 +0100 |
|---|---|---|
| committer | Daniel Borkmann | 2019-02-01 20:55:38 +0100 |
| commit | e16d2f1ab96849b4b65e64b82550a7ecdbf405eb (patch) | |
| tree | c5bb1bfee577712f7a0c1312716b2fb573560c74 /kernel/bpf/local_storage.c | |
| parent | bpf: introduce bpf_spin_lock (diff) | |
| download | kernel-qcow2-linux-e16d2f1ab96849b4b65e64b82550a7ecdbf405eb.tar.gz kernel-qcow2-linux-e16d2f1ab96849b4b65e64b82550a7ecdbf405eb.tar.xz kernel-qcow2-linux-e16d2f1ab96849b4b65e64b82550a7ecdbf405eb.zip | |
bpf: add support for bpf_spin_lock to cgroup local storage
Allow 'struct bpf_spin_lock' to reside inside cgroup local storage.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'kernel/bpf/local_storage.c')
| -rw-r--r-- | kernel/bpf/local_storage.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/bpf/local_storage.c b/kernel/bpf/local_storage.c index 07a34ef562a0..0295427f06e2 100644 --- a/kernel/bpf/local_storage.c +++ b/kernel/bpf/local_storage.c @@ -147,6 +147,7 @@ static int cgroup_storage_update_elem(struct bpf_map *map, void *_key, return -ENOMEM; memcpy(&new->data[0], value, map->value_size); + check_and_init_map_lock(map, new->data); new = xchg(&storage->buf, new); kfree_rcu(new, rcu); @@ -483,6 +484,7 @@ struct bpf_cgroup_storage *bpf_cgroup_storage_alloc(struct bpf_prog *prog, storage->buf = kmalloc_node(size, flags, map->numa_node); if (!storage->buf) goto enomem; + check_and_init_map_lock(map, storage->buf->data); } else { storage->percpu_buf = __alloc_percpu_gfp(size, 8, flags); if (!storage->percpu_buf) |