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

From: Masami Hiramatsu
Date: Fri Apr 24 2015 - 05:52:17 EST


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

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(-)

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