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| author | Alexei Starovoitov <ast@plumgrid.com> | 2015-06-12 19:39:14 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-06-15 15:53:50 -0700 |
| commit | ab1973d3258aa8c40d153dc12bbb1aac56731e47 (patch) | |
| tree | 6b4c9543550d114d75fad4362c6ef526a0d24b77 /kernel/trace/bpf_trace.c | |
| parent | 0756ea3e85139d23a8148ebaa95411c2f0aa4f11 (diff) | |
| download | linux-ab1973d3258aa8c40d153dc12bbb1aac56731e47.tar.gz linux-ab1973d3258aa8c40d153dc12bbb1aac56731e47.tar.bz2 linux-ab1973d3258aa8c40d153dc12bbb1aac56731e47.zip | |
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>
Diffstat (limited to 'kernel/trace/bpf_trace.c')
| -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 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; } |