[PATCH perf/core v3 0/8] perf-probe: Add filtering features

[Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>]

Hi,

Here is a series of patches which improves perf-probe to add
filtering features for --list,--del and --funcs. This also
includes some bugfixes and cleanups.

I've fixed some patches according to Namhyung's review(Thanks!),
and splitted the strfilter related patches.

Note that first 2 bugfixes are removed from this series, those
are already picked by Arnaldo.

E.g. --list/--funcs accepts filter rules.
  ----
  # ./perf probe -l vfs\*
    probe:vfs_read       (on vfs_read@ksrc/linux-3/fs/read_write.c)
  # ./perf probe -l \*libc:\*
    probe_libc:malloc    (on __libc_malloc@malloc/malloc.c in /usr/lib64/libc-2.17.so)
  ----
  ----
  # ./perf probe -F *kmalloc
  __kmalloc
  devm_kmalloc
  mempool_kmalloc
  sg_kmalloc
  sock_kmalloc
  ----

Also, --del accepts filter rules too which is more flexible than
simple wildcard.
  ----
  # ./perf probe -d 'vfs*|malloc'
  Removed event: probe:vfs_read
  Removed event: probe_libc:malloc
  ----

Changes in v3:
  - [1/8] Split strfilter__or() and add strfilter__and() from v2 [3/8].
           Also rename strfilter__add() to strfilter__append().
  - [2/8] Split strfilter__string from v2 [5/8].

Changes in v2:
  - [2/8] Fix to check errors except -ENOENT on deleting events.
  - [5/8] Ditto.
  - [5/8] Fix to check memory allocation error in strfilter__string.
  - [5/8] Fix to check errors of strfilter__string for verifying
          given filter.

Thank you,


---

Masami Hiramatsu (8):
      perf: Improve strfilter to append additional rules
      perf: Add strfilter__string to recover rules string
      perf probe: Accept multiple filter options
      perf probe: Accept filter argument for --list
      perf probe: Allow to use filter on --del command
      perf probe: Accept filter argument for --funcs
      perf probe: Remove redundant cleanup of params.filter
      perf probe: Cleanup and consolidate command parsers


 tools/perf/Documentation/perf-probe.txt |    9 +-
 tools/perf/builtin-probe.c              |  160 +++++++++++++++----------------
 tools/perf/util/probe-event.c           |  126 +++++++++++-------------
 tools/perf/util/probe-event.h           |    4 -
 tools/perf/util/strfilter.c             |  107 +++++++++++++++++++++
 tools/perf/util/strfilter.h             |   35 +++++++
 6 files changed, 281 insertions(+), 160 deletions(-)


-- 
Masami HIRAMATSU
Linux Technology Research Center, System Productivity Research Dept.
Center for Technology Innovation - Systems Engineering 
Hitachi, Ltd., Research & Development Group
E-mail: masami.hiramatsu.pt@hitachi.com