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Date:	Fri, 12 Jun 2015 19:39:14 -0700
From:	Alexei Starovoitov <>
To:	"David S. Miller" <>
Cc:	Andy Lutomirski <>,
	Ingo Molnar <>,
	Steven Rostedt <>,
	Wang Nan <>,,
	Daniel Wagner <>,
	Daniel Borkmann <>,,,
Subject: [PATCH v2 net-next 3/3] bpf: let kprobe programs use bpf_get_smp_processor_id() helper

It's useful to do per-cpu histograms.

Suggested-by: Daniel Wagner <>
Signed-off-by: Alexei Starovoitov <>
v1->v2: no changes

 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;
 		return NULL;

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