tree c0a231d83541263ee938e3452475409323e4e9a9
parent 8bba1bf5e2434c83f2fe8b1422604ace9bbe4cb8
author Markus Metzger <markus.t.metzger@intel.com> 1227601455 +0100
committer Ingo Molnar <mingo@elte.hu> 1227630673 +0100

x86, bts, ftrace: a BTS ftrace plug-in prototype

Impact: add new ftrace plugin

A prototype for a BTS ftrace plug-in.

The tracer collects branch trace in a cyclic buffer for each cpu.

The tracer is not configurable and the trace for each snapshot is
appended when doing cat /debug/tracing/trace.

This is a proof of concept that will be extended with future patches
to become a (hopefully) useful tool.

Signed-off-by: Markus Metzger <markus.t.metzger@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>