[PATCH -tip 0/4] perf-probe updates: string support, etc.

[Masami Hiramatsu <mhiramat@redhat.com>]

Hi,

Here is a series of patches which improves perf probe to
add below features. I cleared some coding style issues.

- String support, which enables dynamic events to trace string
  variables instead of its address.

- Fixed-index array entry support, which allows user to trace
  an array entry with digit index, e.g. array[0].

- Global/static variable support, which allows user to trace
  global or static variables, as same as local one.


TODOs (possible features):
  - Support dynamic array-indexing (var[var2])
  - Support force type-casting ((type)var)
  - Show what deta-structure member is assigned to each argument.
  - Better support for probes on modules
  - More debugger like enhancements(%next, --disasm, etc.)

Thank you,

---

Masami Hiramatsu (4):
      perf probe: Support static and global variables
      perf probe: Support tracing an entry of array
      perf probe: Support "string" type
      tracing/kprobes: Support "string" type


 Documentation/trace/kprobetrace.txt     |    2 
 kernel/trace/trace_kprobe.c             |  370 ++++++++++++++++++++++++-------
 tools/perf/Documentation/perf-probe.txt |    4 
 tools/perf/util/probe-event.c           |   71 ++++--
 tools/perf/util/probe-event.h           |    1 
 tools/perf/util/probe-finder.c          |  192 +++++++++++++---
 6 files changed, 498 insertions(+), 142 deletions(-)

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