diff options
Diffstat (limited to 'kernel/bpf/helpers.c')
| -rw-r--r-- | kernel/bpf/helpers.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/kernel/bpf/helpers.c b/kernel/bpf/helpers.c index fbe544761628..a411fc17d265 100644 --- a/kernel/bpf/helpers.c +++ b/kernel/bpf/helpers.c @@ -301,6 +301,22 @@ const struct bpf_func_proto bpf_spin_unlock_proto = { .arg1_type = ARG_PTR_TO_SPIN_LOCK, }; +void copy_map_value_locked(struct bpf_map *map, void *dst, void *src, + bool lock_src) +{ + struct bpf_spin_lock *lock; + + if (lock_src) + lock = src + map->spin_lock_off; + else + lock = dst + map->spin_lock_off; + preempt_disable(); + ____bpf_spin_lock(lock); + copy_map_value(map, dst, src); + ____bpf_spin_unlock(lock); + preempt_enable(); +} + #ifdef CONFIG_CGROUPS BPF_CALL_0(bpf_get_current_cgroup_id) { |