trace: profiling branches

Ingo,

The following patches clean up the unlikely/likely tracer. Namely it consolidates it into a single file called "profile_annotated_branch".

It also adds a new profiler. A true branch profiler that profiles all if() statements where the conditional is not a constant. It puts a bit of overhead on the system, but the results seem pretty interesting. The results are placed in "profile_branch".

Anyway, enjoy ;-)

The following patches are in:

git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace.git

branch: tip/devel

Steven Rostedt (4):
trace: remove extra assign in branch check
trace: consolidate unlikely and likely profiler
trace: branch profiling should not print percent without data
trace: profile all if conditionals

----

 include/asm-generic/vmlinux.lds.h |   20 +++++++----
 include/linux/compiler.h          |   64 +++++++++++++++++++++------------
 kernel/trace/Kconfig              |   19 +++++++++-
 kernel/trace/trace_branch.c       |   72 +++++++++++++++++++++++-------------
 4 files changed, 117 insertions(+), 58 deletions(-)