linux-kernel - [PATCH 0/4] trace: profiling branches

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Message-Id: <20081121071213.365288293@goodmis.org>
Date:	Fri, 21 Nov 2008 02:12:13 -0500
From:	Steven Rostedt <rostedt@...dmis.org>
To:	linux-kernel@...r.kernel.org
Cc:	Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	Theodore Tso <tytso@....edu>,
	Arjan van de Ven <arjan@...radead.org>
Subject: [PATCH 0/4] 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(-)
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