diff options
| author | Alexei Starovoitov <ast@fb.com> | 2016-08-11 18:17:18 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-08-12 21:57:05 -0700 |
| commit | 8937bd80fce64a25be23c7790459d93f7b1e9b79 (patch) | |
| tree | 62cfc0819d3d6407636c8fc1e4d00a43081e24c3 | |
| parent | 1633ac0a2e774a9af339b9290ef33cd97a918c54 (diff) | |
| download | linux-8937bd80fce64a25be23c7790459d93f7b1e9b79.tar.bz2 | |
bpf: allow bpf_get_prandom_u32() to be used in tracing
bpf_get_prandom_u32() was initially introduced for socket filters
and later requested numberous times to be added to tracing bpf programs
for the same reason as in socket filters: to be able to randomly
select incoming events.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | kernel/trace/bpf_trace.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c index 6b794d6669a7..ad35213b8405 100644 --- a/kernel/trace/bpf_trace.c +++ b/kernel/trace/bpf_trace.c @@ -437,6 +437,8 @@ static const struct bpf_func_proto *tracing_func_proto(enum bpf_func_id func_id) return bpf_get_probe_write_proto(); case BPF_FUNC_current_task_under_cgroup: return &bpf_current_task_under_cgroup_proto; + case BPF_FUNC_get_prandom_u32: + return &bpf_get_prandom_u32_proto; default: return NULL; } |