trace-cmd dump: Add helpers for processing trace file version 7

New global variables are added, that hold trace file context:
 - trace file version
 - compression context
Also a few helper functions for reading compressed data.

Link: https://lore.kernel.org/linux-trace-devel/20220126095337.570867-2-tz.stoyanov@gmail.com

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