[PATCH -tip 00/10] perf-probe updates - data-structure support, etc.

[Masami Hiramatsu <mhiramat@redhat.com>]

Hi Ingo,

Here are several updates of perf-probe.
This updates includes data structure accessing support
--list option enhancement and --dry-run option support.

- --dry-run allows users to run perf-probe just for checking
  that the command works correctly.

- --list option enhancement allows user to check where the
  probes are put on (with filename/line number).

- data structure accessing support allows user to trace
  the contents of local variables/function parameters.

Long-term TODOs (future features):
  - Enhance probe-finder to decode call frame instructions.
  - Support tracing static variables (non global)
  - Support variable basic types from debuginfo (e.g. char, int, ...)
  - Support array element (var[N])
  - Support string/dynamic arrays (*var, var[N..M])
  - Support the type of return value
  - Support force type-casting ((type)var)
  - Support sys_perf_counter_open (for non-root users)
  - Support dynamic array-indexing (var[var2])

Miscs:
  - Better support for probes on modules
  - More debugger like enhancements(%next, --disasm, etc.)


Thank you,

---

Masami Hiramatsu (10):
      perf probe: Accessing members in data structures
      perf probe: List probes with line number and file name
      perf probe: Introduce kprobe_trace_event and perf_probe_event
      perf probe: Add --dry-run option
      perf probe: Introduce die_find_child() function
      perf probe: Rename some die_get_* functions
      perf probe: Rename session to param
      perf probe: Move add-probe routine under util/
      perf probe: Use wrapper functions
      perf tools: Introduce xzalloc() for detecting out of memory


 tools/perf/Documentation/perf-probe.txt |    5 
 tools/perf/builtin-probe.c              |  191 +------
 tools/perf/util/probe-event.c           |  830 +++++++++++++++++++++++--------
 tools/perf/util/probe-event.h           |  123 ++++-
 tools/perf/util/probe-finder.c          |  459 ++++++++++++-----
 tools/perf/util/probe-finder.h          |   60 +-
 tools/perf/util/util.h                  |    7 
 7 files changed, 1115 insertions(+), 560 deletions(-)

-- 
Masami Hiramatsu
e-mail: mhiramat@redhat.com