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

Here are several bugfixes and updates of perf-probe and
kprobe-tracer.
This updates includes --line option support which you are
waiting for :-).

For kprobe-tracer, I decided to drop $argN support, because
the ABI for each function strongly depends on not only the
architecture but also the API of the function and gcc options.
Anyway, we already have perf-probe which allows us to find
register/memory assignment of each arguments.


Here are updated todo list.

Long-term TODOs (future features):
- 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:
- Better support for probes on modules
- Move onto libdw/libdwfl
- Storing file name/line number information in the
kernel for listing events


Thank you,

---
Masami Hiramatsu (8):
perf probe: Support --line option to show probable source-code lines
perf tools: Enhance glob string matching
perf tools: Support tracepoint glob matching
perf probe: Show probe list in pager
[CLEANUP] perf probe: Remove newline from die()
x86/ptrace: Remove unused regs_get_argument_nth API
tracing/kprobe: Drop function argument access syntax
tracing/kprobe: Update example output in documentation


Documentation/trace/kprobetrace.txt | 48 ++++---
arch/x86/include/asm/ptrace.h | 4 -
arch/x86/kernel/ptrace.c | 24 ----
kernel/trace/trace_kprobe.c | 18 ---
tools/perf/Documentation/perf-probe.txt | 20 +++
tools/perf/builtin-probe.c | 80 ++++++++++--
tools/perf/util/parse-events.c | 11 +-
tools/perf/util/probe-event.c | 103 ++++++++++++++++
tools/perf/util/probe-event.h | 2
tools/perf/util/probe-finder.c | 203 +++++++++++++++++++++++++++++--
tools/perf/util/probe-finder.h | 31 +++++
tools/perf/util/string.c | 65 +++++++++-
12 files changed, 507 insertions(+), 102 deletions(-)
--
Masami Hiramatsu

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


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