linux-kernel - [PATCH -tip 0/8] perf-probe updates

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Message-ID: <20091208220232.10142.2643.stgit@dhcp-100-2-132.bos.redhat.com>
Date:	Tue, 08 Dec 2009 17:02:32 -0500
From:	Masami Hiramatsu <mhiramat@...hat.com>
To:	Ingo Molnar <mingo@...e.hu>,
	Frederic Weisbecker <fweisbec@...il.com>,
	lkml <linux-kernel@...r.kernel.org>
Cc:	Ingo Molnar <mingo@...e.hu>, Steven Rostedt <rostedt@...dmis.org>,
	Jim Keniston <jkenisto@...ibm.com>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	Christoph Hellwig <hch@...radead.org>,
	"Frank Ch. Eigler" <fche@...hat.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Jason Baron <jbaron@...hat.com>,
	"K.Prasad" <prasad@...ux.vnet.ibm.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	systemtap <systemtap@...rces.redhat.com>,
	DLE <dle-develop@...ts.sourceforge.net>
Subject: [PATCH -tip 0/8] perf-probe updates

Hi Ingo,

I made several usability updates and added --del option
for perf-probe. I think most of basic functions are implemented.
I'm planning to support checking build-id next, because it
can prevent users to use old vmlinux for debuginfo analysis.

Here are the todo list I have (most of them had been requested
on LKML). I'd like to share this list with other developers
who are interested in.

Short-term TODOs:
  - Support checking kernel Build-ID

Long-term TODOs (future features):
  - Support --line option to show which lines user can probe
  - Support lazy string matching(glob?) for selecting probing
    line
  - Support sys_perf_counter_open (for non-root users)
  - Support tracing static variables (non global)
  - Support variable types from debuginfo (e.g. char, int, ...)
  - Support fields of data structures (var->field)
  - Support array (var[N])
  - Support dynamic array-indexing (var[var2])
  - Support string/dynamic arrays (*var, var[N..M])
  - Support force type-casting ((type)var)
  - Support the type of return value

Miscs:
  - Support glob expression with --del option (like --del "*")
  - Support event/group name specifying for new events
  - Better support for probes on modules
  - Symbol search by libelf/kallsyms
  - Move onto libdw/libdwfl
  - Storing file name/line number information in the
    kernel for listing events
  

Thank you,

---

Masami Hiramatsu (8):
      perf probe: Update perf-probe document
      perf probe: Support --del option
      trace-kprobe: Support delete probe syntax
      perf probe: Support vmlinux on cwd by default
      perf probe: Remove event suffix number _0
      perf probe: Fix add-probe command syntax without --add option
      perf probe: Change probe-added message more user-friendly
      perf probe: Change event list format


 kernel/trace/trace_kprobe.c             |   37 +++++++--
 tools/perf/Documentation/perf-probe.txt |   21 ++++-
 tools/perf/builtin-probe.c              |   76 ++++++++++++++++---
 tools/perf/util/probe-event.c           |  122 ++++++++++++++++++++++++++++---
 tools/perf/util/probe-event.h           |    1 
 5 files changed, 217 insertions(+), 40 deletions(-)

-- 
Masami Hiramatsu

Software Engineer
Hitachi Computer Products (America), Inc.
Software Solutions Division
e-mail: mhiramat@...hat.com
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