[PATCH bpf-next v5 2/8] samples/bpf: xdp_redirect_cpu have not need for read_trace_pipe
From: Maciej Fijalkowski <hidden>
Date: 2019-02-01 00:20:22
Subsystem:
bpf [general] (safe dynamic programs and tools), the rest, xdp (express data path) · Maintainers:
Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi, Linus Torvalds, David S. Miller, Jakub Kicinski, Jesper Dangaard Brouer, John Fastabend
From: Jesper Dangaard Brouer <redacted> The sample xdp_redirect_cpu is not using helper bpf_trace_printk. Thus it makes no sense that the --debug option us reading from /sys/kernel/debug/tracing/trace_pipe via read_trace_pipe. Simply remove it. Signed-off-by: Jesper Dangaard Brouer <redacted> Acked-by: John Fastabend <john.fastabend@gmail.com> --- samples/bpf/xdp_redirect_cpu_user.c | 10 ---------- 1 file changed, 10 deletions(-)
diff --git a/samples/bpf/xdp_redirect_cpu_user.c b/samples/bpf/xdp_redirect_cpu_user.c
index 2d23054aaccf..f141e752ca0a 100644
--- a/samples/bpf/xdp_redirect_cpu_user.c
+++ b/samples/bpf/xdp_redirect_cpu_user.c@@ -51,7 +51,6 @@ static const struct option long_options[] = { {"help", no_argument, NULL, 'h' }, {"dev", required_argument, NULL, 'd' }, {"skb-mode", no_argument, NULL, 'S' }, - {"debug", no_argument, NULL, 'D' }, {"sec", required_argument, NULL, 's' }, {"prognum", required_argument, NULL, 'p' }, {"qsize", required_argument, NULL, 'q' },
@@ -563,7 +562,6 @@ int main(int argc, char **argv) bool use_separators = true; bool stress_mode = false; char filename[256]; - bool debug = false; int added_cpus = 0; int longindex = 0; int interval = 2;
@@ -624,9 +622,6 @@ int main(int argc, char **argv) case 'S': xdp_flags |= XDP_FLAGS_SKB_MODE; break; - case 'D': - debug = true; - break; case 'x': stress_mode = true; break;
@@ -688,11 +683,6 @@ int main(int argc, char **argv) return EXIT_FAIL_XDP; } - if (debug) { - printf("Debug-mode reading trace pipe (fix #define DEBUG)\n"); - read_trace_pipe(); - } - stats_poll(interval, use_separators, prog_num, stress_mode); return EXIT_OK; }
--
2.16.1