[PATCH 0/4] trace: profiling branches
From: Steven Rostedt
Date: Fri Nov 21 2008 - 02:14:21 EST
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(-)
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