[PATCH net-next 3/3] bpf: let kprobe programs use bpf_get_smp_processor_id() helper

[Alexei Starovoitov]

It's useful to do per-cpu histograms.

Suggested-by: Daniel Wagner <daniel.wag...@bmw-carit.de>
Signed-off-by: Alexei Starovoitov <a...@plumgrid.com>
---
 kernel/trace/bpf_trace.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c
index 4f9b5d41869b..88a041adee90 100644
--- a/kernel/trace/bpf_trace.c
+++ b/kernel/trace/bpf_trace.c
@@ -181,6 +181,8 @@ static const struct bpf_func_proto 
*kprobe_prog_func_proto(enum bpf_func_id func
                return &bpf_get_current_comm_proto;
        case BPF_FUNC_trace_printk:
                return bpf_get_trace_printk_proto();
+       case BPF_FUNC_get_smp_processor_id:
+               return &bpf_get_smp_processor_id_proto;
        default:
                return NULL;
        }
-- 
1.7.9.5

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