trace-cmd library: New API tracecmd_output_write_init

The API writes initial magic bits in a trace file.
 tracecmd_output_write_init()

Link: https://lore.kernel.org/linux-trace-devel/20211111150711.86266-1-tz.stoyanov@gmail.com

Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2 files changed