Commit ab1973d3 authored Jun 12, 2015 by Alexei Starovoitov Committed by David S. Miller Jun 15, 2015

bpf: let kprobe programs use bpf_get_smp_processor_id() helper



It's useful to do per-cpu histograms.

Suggested-by: Daniel Wagner <daniel.wagner@bmw-carit.de>
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 0756ea3e

kernel/trace/bpf_trace.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -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;
		}