tracing: Add event filter logic for !(...)

There's no changes to the first patch that you can see from here:

http://lkml.kernel.org/r/[email protected]

But I added two more patches:

1) adds the logic to do ! with the AND and OR cases. Like:

  !(prev_pid == 0 && next_pid == 1)

2) I added ftracetests selftest to test a bunch of filter cases. I can probably add more, but this is a start.

Steven Rostedt (Red Hat) (3):
tracing: Add NOT to filtering logic
tracing: Allow NOT to filter AND and OR clauses
ftracetests: Add test to test event filter logic

----

 kernel/trace/trace_events_filter.c                 |  29 ++-
 .../selftests/ftrace/test.d/ftrace/filter.tc       | 200 +++++++++++++++++++++
 2 files changed, 223 insertions(+), 6 deletions(-)