Commit 72e2b2b6 authored Jun 23, 2020 by Yonghong Song Committed by Alexei Starovoitov Jun 24, 2020

bpf: Allow tracing programs to use bpf_jiffies64() helper



/proc/net/tcp{4,6} uses jiffies for various computations.
Let us add bpf_jiffies64() helper to tracing program
so bpf_iter and other programs can use it.

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20200623230808.3988073-1-yhs@fb.com

parent c06b0229

kernel/trace/bpf_trace.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -1135,6 +1135,8 @@ bpf_tracing_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
		return &bpf_ringbuf_discard_proto;
		case BPF_FUNC_ringbuf_query:
		return &bpf_ringbuf_query_proto;
		case BPF_FUNC_jiffies64:
		return &bpf_jiffies64_proto;
		default:
		return NULL;
		}

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