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samples/bpf: xdp_redirect_cpu have not need for read_trace_pipe
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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 <brouer@redhat.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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Jesper Dangaard Brouer authored and Daniel Borkmann committed Feb 1, 2019
1 parent f3cea32 commit 7313798
Showing 1 changed file with 0 additions and 10 deletions.
10 changes: 0 additions & 10 deletions samples/bpf/xdp_redirect_cpu_user.c
Original file line number Diff line number Diff line change
Expand Up @@ -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' },
Expand Down Expand Up @@ -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;
Expand Down Expand Up @@ -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;
Expand Down Expand Up @@ -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;
}

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