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samples/bpf: xdp_redirect_cpu have not need for read_trace_pipe 

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>
This commit is contained in:
Jesper Dangaard Brouer 2019-02-01 22:42:24 +01:00 committed by Daniel Borkmann
parent f3cea32d56
commit 7313798b14
1 changed files with 0 additions and 10 deletions
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10
samples/bpf/xdp_redirect_cpu_user.c
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@ -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;
}