diff mbox

[v2,net-next,3/3] bpf: let kprobe programs use bpf_get_smp_processor_id() helper

Message ID 1434163154-5218-4-git-send-email-ast@plumgrid.com
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Alexei Starovoitov June 13, 2015, 2:39 a.m. UTC 
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(+)

Comments

Daniel Borkmann June 13, 2015, 8:23 a.m. UTC | #1 
On 06/13/2015 04:39 AM, Alexei Starovoitov wrote:
> 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>
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diff mbox

Patch

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;
 	}