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    Subject[PATCH v2 net-next 3/3] bpf: let kprobe programs use bpf_get_smp_processor_id() helper
    Date
    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>
    ---
    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;
    default:
    return NULL;
    }
    --
    1.7.9.5


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