cyclictest: add option for dumping the histogram in a file

Add an option '-J' or '--histfile' to dump the latency histogram to <path>
instead of stdout. This allows for live update of the current min, avg, and max
numbers while retaining the option to save histogram data for later analysis.

Signed-off-by: Gratian Crisan <gratian.crisan@ni.com>
Signed-off-by: Josh Cartwright <joshc@ni.com>
1 file changed