dpdk: Fix dpdk logs being split over multiple lines.

More recent versions of the vprintf() implementation in glibc are
exhibiting this truncation behavior due to an internal buffer size
change. According to the glibc developers, this is not considered
a bug (see: https://sourceware.org/bugzilla/show_bug.cgi?id=31137).

To prevent buffer truncation, remove the request for unbuffered
output.

Signed-off-by: Eelco Chaudron <[email protected]>
Acked-by: Mike Pattrick <[email protected]>

Author: chaudron

lib/dpdk.c

@@ -323,7 +323,6 @@ dpdk_init__(const struct smap *ovs_other_config)
     if (log_stream == NULL) {
         VLOG_ERR("Can't redirect DPDK log: %s.", ovs_strerror(errno));
     } else {
-        setbuf(log_stream, NULL);
         rte_openlog_stream(log_stream);
     }