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Subject[PATCH -tip 0/8] perf-probe updates
Date
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


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