linux-kernel - Re: [PATCH -tip tracing/kprobes 0/9] tracing/kprobes, perf: perf probe and kprobe-tracer bugfixes

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Date:	Sat, 17 Oct 2009 10:02:03 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Masami Hiramatsu <mhiramat@...hat.com>
Cc:	Frederic Weisbecker <fweisbec@...il.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	lkml <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Mike Galbraith <efault@....de>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Christoph Hellwig <hch@...radead.org>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	Jim Keniston <jkenisto@...ibm.com>,
	"Frank Ch. Eigler" <fche@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	systemtap <systemtap@...rces.redhat.com>,
	DLE <dle-develop@...ts.sourceforge.net>
Subject: Re: [PATCH -tip tracing/kprobes 0/9] tracing/kprobes, perf: perf
	probe and kprobe-tracer bugfixes


* Masami Hiramatsu <mhiramat@...hat.com> wrote:

> Hi Ingo and Frederic,
> 
> Here are the bugfix and update (mostly cleanup) patches for
> previous patchset.
> 
> > I hope it's part of the last family of instruction set we
> > are missing.
> 
> I added missing SSE opcodes and 3DNow! support too.
> However, near future, x86 decoder may need AVX support.
> (AFAIK, currently, there are no code using it.)
> 
> Thank you,
> 
> ---
> 
> Masami Hiramatsu (9):
>       perf: Add perf-probe document
>       perf: Add DIE_IF() macro for error checking
>       perf: Use eprintf() for debug messages in perf-probe
>       perf: Use die() for error cases in perf-probe
>       perf: Check libdwarf APIs for perf probe
>       x86: Add AMD prefetch and 3DNow! opcodes to opcode map
>       x86: Add MMX/SSE opcode groups to opcode map
>       tracing/kprobes: Add failure messages for debugging
>       tracing/kprobes: Update kprobe-tracer selftest against new syntax
> 
> 
>  arch/x86/lib/x86-opcode-map.txt         |   23 ++++-
>  kernel/trace/trace_kprobe.c             |   39 ++++++--
>  tools/perf/Documentation/perf-probe.txt |   48 ++++++++++
>  tools/perf/Makefile                     |    5 +
>  tools/perf/builtin-probe.c              |   70 ++++++---------
>  tools/perf/command-list.txt             |    1 
>  tools/perf/util/probe-finder.c          |  149 ++++++++++++++-----------------
>  tools/perf/util/probe-finder.h          |   17 ----
>  tools/perf/util/util.h                  |    9 ++
>  9 files changed, 206 insertions(+), 155 deletions(-)
>  create mode 100644 tools/perf/Documentation/perf-probe.txt

Looks really nice, thanks Masami!

Note, i've created a new topic tree for this work: tip:perf/probes, and 
have put all the commits there - since i expect most of the 
enabling/completion work for this feature to happen on the perf events 
side.

I also merged this tree upto v2.6.32-rc5 and resolved a conflict with 
recent tracing fixes. Please base future patches on this new tree.

Thanks,

	Ingo
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