trace-cmd: Split out binding a port and fork reader from open_udp()

Split out binding a port and fork reader from open_udp() for avoiding duplicate
codes between listen mode and virt-server mode.

Changes in V2: Add a comment in open_udp()

Link: http://lkml.kernel.org/r/20130913020630.28927.94339.stgit@yunodevel

Signed-off-by: Yoshihiro YUNOMAE <yoshihiro.yunomae.ez@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
1 file changed