linux/tools/perf/Documentation
Masami Hiramatsu 2a9c8c3609 perf probe: Add lazy line matching support
Add lazy line matching support for specifying new probes.
This also changes the syntax of perf probe a bit. Now
perf probe accepts one of below probe event definitions.

1) Define event based on function name
 [EVENT=]FUNC[@SRC][:RLN|+OFF|%return|;PTN] [ARG ...]

2) Define event based on source file with line number
 [EVENT=]SRC:ALN [ARG ...]

3) Define event based on source file with lazy pattern
 [EVENT=]SRC;PTN [ARG ...]

- New lazy matching pattern(PTN) follows ';' (semicolon). And it
  must be put the end of the definition.
- So, @SRC is no longer the part which must be put at the end
  of the definition.

Note that ';' (semicolon) can be interpreted as the end of
a command by the shell. This means that you need to quote it.
(anyway you will need to quote the lazy pattern itself too,
because it may contains other sensitive characters, like
'[',']' etc.).

Lazy matching
-------------
The lazy line matching is similar to glob matching except
ignoring spaces in both of pattern and target.

e.g.
'a=*' can matches 'a=b', 'a = b', 'a == b' and so on.

This provides some sort of flexibility and robustness to
probe point definitions against minor code changes.
(for example, actual 10th line of schedule() can be changed
 easily by modifying schedule(), but the same line matching
 'rq=cpu_rq*' may still exist.)

Changes in v3:
 - Cast Dwarf_Addr to uintmax_t for printf-formats.

Changes in v2:
 - Cast Dwarf_Addr to unsigned long long for printf-formats.

Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: systemtap <systemtap@sources.redhat.com>
Cc: DLE <dle-develop@lists.sourceforge.net>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: K.Prasad <prasad@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
LKML-Reference: <20100225133611.6725.45078.stgit@localhost6.localdomain6>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-02-25 17:49:30 +01:00
..
Makefile perf tools: Make 'make html' work 2009-08-18 18:43:13 +02:00
asciidoc.conf
examples.txt perf: Rename perf-examples.txt to examples.txt 2009-08-17 10:43:42 +02:00
manpage-1.72.xsl
manpage-base.xsl
manpage-bold-literal.xsl
manpage-normal.xsl
manpage-suppress-sp.xsl
perf-annotate.txt
perf-archive.txt perf archive: Add documentation 2010-01-20 08:54:58 +01:00
perf-bench.txt perf bench: Add new document about perf-bench 2009-11-10 14:14:36 +01:00
perf-buildid-cache.txt perf buildid-cache: Add new command to manage build-id cache 2010-01-21 08:31:29 +01:00
perf-buildid-list.txt perf buildid-list: Always show the DSO name 2009-11-17 07:19:54 +01:00
perf-diff.txt perf diff: Use perf_session__fprintf_hists just like 'perf record' 2009-12-16 16:53:37 +01:00
perf-help.txt
perf-kmem.txt perf kmem: Show usage if no option is specified 2009-12-10 08:30:27 +01:00
perf-list.txt
perf-probe.txt perf probe: Add lazy line matching support 2010-02-25 17:49:30 +01:00
perf-record.txt perf tools: Add support for breakpoint events in perf tools 2009-11-23 18:18:31 +01:00
perf-report.txt perf diff: Use perf_session__fprintf_hists just like 'perf record' 2009-12-16 16:53:37 +01:00
perf-sched.txt perf sched: Add 'perf sched trace', improve documentation 2009-09-13 17:55:23 +02:00
perf-stat.txt perf stat: Fix tool option consistency: rename -S/--scale to -c/--scale 2009-08-09 12:54:37 +02:00
perf-timechart.txt perf timechart: Add a process filter 2009-10-20 07:55:50 +02:00
perf-top.txt perf top: Teach it to autolocate vmlinux 2010-02-04 09:33:28 +01:00
perf-trace-perl.txt perf/scripts: Tag syscall_name helper as not yet available 2010-02-25 04:07:50 +01:00
perf-trace-python.txt perf/scripts: Tag syscall_name helper as not yet available 2010-02-25 04:07:50 +01:00
perf-trace.txt perf/scripts: Add perf-trace-python Documentation 2010-02-25 04:07:49 +01:00
perf.txt perf: Fix few typos + cosmetics 2010-01-13 17:39:44 +01:00