BPF_STDOUT
if (stream_id != BPF_STDOUT && stream_id != BPF_STDERR)
bpf_stream_printk(BPF_STDOUT, "foo");
ret = bpf_stream_printk(BPF_STDOUT, _STR);
if (bpf_stream_printk(BPF_STDOUT, _STR) == -ENOSPC && size == 99954)
bpf_stream_vprintk(BPF_STDOUT, "", NULL, 0);
bpf_stream_vprintk(BPF_STDOUT, "", (void *)46, 0);
bpf_stream_vprintk(BPF_STDOUT, ctx, NULL, 0);