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[PATCH -tip 0/8] perf-probe updates
- From: Masami Hiramatsu <mhiramat at redhat dot com>
- To: Ingo Molnar <mingo at elte dot hu>, Frederic Weisbecker <fweisbec at gmail dot com>, lkml<linux-kernel at vger dot kernel dot org>
- Cc: Ingo Molnar <mingo at elte dot hu>, Steven Rostedt <rostedt at goodmis dot org>, Jim Keniston <jkenisto at us dot ibm dot com>, Ananth N Mavinakayanahalli <ananth at in dot ibm dot com>, Christoph Hellwig <hch at infradead dot org>, "Frank Ch. Eigler" <fche at redhat dot com>, Frederic Weisbecker <fweisbec at gmail dot com>, Jason Baron <jbaron at redhat dot com>, "K.Prasad" <prasad at linux dot vnet dot ibm dot com>, Peter Zijlstra <peterz at infradead dot org>, Srikar Dronamraju <srikar at linux dot vnet dot ibm dot com>, Arnaldo Carvalho de Melo <acme at redhat dot com>, systemtap<systemtap at sources dot redhat dot com>, DLE<dle-develop at lists dot sourceforge dot net>
- Date: Tue, 08 Dec 2009 17:02:32 -0500
- 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@redhat.com