[PATCH v2 net-next 3/3] bpf: let kprobe programs use bpf_get_smp_processor_id() helper
From: Alexei Starovoitov <hidden>
Date: 2015-06-13 02:39:31
Also in:
linux-api, lkml
Subsystem:
bpf [general] (safe dynamic programs and tools), bpf [security & lsm] (security audit and enforcement using bpf), bpf [tracing], the rest, tracing · Maintainers:
Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi, KP Singh, Matt Bobrowski, Song Liu, Linus Torvalds, Steven Rostedt, Masami Hiramatsu
It's useful to do per-cpu histograms. Suggested-by: Daniel Wagner <redacted> Signed-off-by: Alexei Starovoitov <redacted> --- 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