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eb948e5083
linux-next/tools/perf/util
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Masami Hiramatsu eb948e5083 perf probe: Allow to add events on the local functions 
Allow to add events on the local functions without debuginfo.
(With the debuginfo, we can add events even on inlined functions)
Currently, probing on local functions requires debuginfo to
locate actual address. It is also possible without debuginfo since
we have symbol maps.

Without this change;
  ----
  # ./perf probe -a t_show
  Added new event:
    probe:t_show         (on t_show)

  You can now use it in all perf tools, such as:

          perf record -e probe:t_show -aR sleep 1

  # ./perf probe -x perf -a identity__map_ip
  no symbols found in /kbuild/ksrc/linux-3/tools/perf/perf, maybe install a debug package?
  Failed to load map.
    Error: Failed to add events. (-22)
  ----
As the above results, perf probe just put one event
on the first found symbol for kprobe event. Moreover,
for uprobe event, perf probe failed to find local
functions.

With this change;
  ----
  # ./perf probe -a t_show
  Added new events:
    probe:t_show         (on t_show)
    probe:t_show_1       (on t_show)
    probe:t_show_2       (on t_show)
    probe:t_show_3       (on t_show)

  You can now use it in all perf tools, such as:

          perf record -e probe:t_show_3 -aR sleep 1

  # ./perf probe -x perf -a identity__map_ip
  Added new events:
    probe_perf:identity__map_ip (on identity__map_ip in /kbuild/ksrc/linux-3/tools/perf/perf)
    probe_perf:identity__map_ip_1 (on identity__map_ip in /kbuild/ksrc/linux-3/tools/perf/perf)
    probe_perf:identity__map_ip_2 (on identity__map_ip in /kbuild/ksrc/linux-3/tools/perf/perf)
    probe_perf:identity__map_ip_3 (on identity__map_ip in /kbuild/ksrc/linux-3/tools/perf/perf)

  You can now use it in all perf tools, such as:

          perf record -e probe_perf:identity__map_ip_3 -aR sleep 1
  ----
Now we succeed to put events on every given local functions
for both kprobes and uprobes. :)

Note that this also introduces some symbol rbtree
iteration macros; symbols__for_each, dso__for_each_symbol,
and map__for_each_symbol. These are for walking through
the symbol list in a map.

Changes from v2:
  - Fix add_exec_to_probe_trace_events() not to convert address
    to tp->symbol any more.
  - Fix to set kernel probes based on ref_reloc_sym.

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: "David A. Long" <dave.long@linaro.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: yrl.pp-manager.tt@hitachi.com
Link: http://lkml.kernel.org/r/20140206053225.29635.15026.stgit@kbuild-fedora.yrl.intra.hitachi.co.jp
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-02-18 09:38:43 -03:00
..
include perf tools: Drop prefetch.h 2014-02-18 09:34:49 -03:00
scripting-engines perf tools: No need to test against NULL before calling free() 2013-12-26 15:58:52 -03:00
abspath.c perf tools: Remove some unused functions 2010-05-18 23:03:35 -03:00
alias.c perf tools: Introduce zfree 2013-12-27 15:17:00 -03:00
annotate.c perf tools: Use zfree to help detect use after free bugs 2013-12-27 17:08:19 -03:00
annotate.h perf annotate: Make symbol__inc_addr_samples private 2013-12-19 11:34:33 -03:00
bitmap.c perf tools: Add bitmap_or function into bitmap object 2012-02-13 23:28:10 -02:00
build-id.c perf symbols: Constify some DSO methods parameters 2013-12-10 16:51:10 -03:00
build-id.h perf symbols: Constify some DSO methods parameters 2013-12-10 16:51:10 -03:00
cache.h tools/perf: Turn strlcpy() into a __weak function 2013-10-09 08:48:49 +02:00
callchain.c perf tools: Remove unnecessary callchain cursor state restore on unmatch 2014-01-17 11:25:24 -03:00
callchain.h perf tools: Factor out sample__resolve_callchain() 2014-01-15 15:32:43 -03:00
cgroup.c perf evlist: Introduce evlist__for_each() & friends 2014-01-13 10:06:25 -03:00
cgroup.h perf tool: Add cgroup support 2011-02-16 13:30:48 +01:00
color.c perf diff: Color the Ratio column 2014-01-13 11:37:17 -03:00
color.h perf diff: Color the Ratio column 2014-01-13 11:37:17 -03:00
comm.c perf tools: Do proper comm override error handling 2014-01-16 16:44:39 -03:00
comm.h perf tools: Do proper comm override error handling 2014-01-16 16:44:39 -03:00
config.c perf tools: Use __maybe_used for unused variables 2012-09-11 12:19:15 -03:00
cpumap.c perf tools: Move fs.* to lib/api/fs/ 2014-02-18 09:34:49 -03:00
cpumap.h perf tools: Rename cpu_map__all() to cpu_map__empty() 2013-07-12 13:45:44 -03:00
ctype.c perf tools: ctype.c only wants util.h 2012-02-13 23:17:40 -02:00
data.c perf tools: Add perf_data_file__write interface 2013-12-02 09:22:46 -03:00
data.h perf tools: Add perf_data_file__write interface 2013-12-02 09:22:46 -03:00
debug.c perf tools: Get rid of a duplicate va_end() in error reporting routine 2013-12-19 11:38:42 -03:00
debug.h perf tools: Overload pr_stat traceevent print function 2013-12-04 15:23:55 -03:00
dso.c perf tools: Introduce zfree 2013-12-27 15:17:00 -03:00
dso.h perf probe: Allow to add events on the local functions 2014-02-18 09:38:43 -03:00
dwarf-aux.c perf probe: Fix to find line information for probe list 2013-10-04 15:16:05 -03:00
dwarf-aux.h perf probe: Fix to find line information for probe list 2013-10-04 15:16:05 -03:00
environment.c
event.c perf record: Get ref_reloc_sym from kernel map 2014-01-31 17:21:50 -03:00
event.h perf callchain: Add mask into struct regs_dump 2014-02-18 09:34:48 -03:00
evlist.c perf stat: Fix memory corruption of xyarray when cpumask is used 2014-01-20 16:19:09 -03:00
evlist.h perf evlist: Introduce evlist__for_each() & friends 2014-01-13 10:06:25 -03:00
evsel.c perf callchain: Add mask into struct regs_dump 2014-02-18 09:34:48 -03:00
evsel.h perf tools: Rename 'perf_record_opts' to 'record_opts 2013-12-19 14:43:45 -03:00
exec_cmd.c perf tools: Makefile: Remove various and sundry cruft 2011-02-18 07:43:06 -02:00
exec_cmd.h perf tools: Remove some unused functions 2010-05-18 23:03:35 -03:00
generate-cmdlist.sh tools/perf: Standardize feature support define names to: HAVE_{FEATURE}_SUPPORT 2013-10-09 08:48:28 +02:00
header.c perf tools: Ensure sscanf does not overrun the "mem" field 2014-01-20 16:19:08 -03:00
header.h perf header: Pack 'struct perf_session_env' 2014-01-13 10:06:23 -03:00
help.c perf tools: Use zfree to help detect use after free bugs 2013-12-27 17:08:19 -03:00
help.h
hist.c perf tools: Shorten sample symbol resolving function signature 2014-02-18 09:34:46 -03:00
hist.h perf annotate: Adopt methods from hists 2013-12-19 11:34:27 -03:00
hweight.c
intlist.c perf util: Add findnew method to intlist 2013-10-14 10:28:48 -03:00
intlist.h perf util: Add findnew method to intlist 2013-10-14 10:28:48 -03:00
levenshtein.c
levenshtein.h
machine.c perf callchain: Add mask into struct regs_dump 2014-02-18 09:34:48 -03:00
machine.h perf tools: Shorten sample symbol resolving function signature 2014-02-18 09:34:46 -03:00
map.c perf symbols: Fix symbol annotation for relocated kernel 2014-01-31 17:21:47 -03:00
map.h perf probe: Allow to add events on the local functions 2014-02-18 09:38:43 -03:00
pager.c perf tools: Fix pager on minimal-install embedded systems 2012-05-30 15:10:39 -03:00
parse-events.c perf list: Fix checking for supported events on older kernels 2014-02-10 11:34:31 -03:00
parse-events.h perf parse events: Demystify memory allocations 2013-07-12 13:52:05 -03:00
parse-events.l perf tools: Move start conditions to start of the flex file 2013-10-11 12:17:31 -03:00
parse-events.y perf parse events: Demystify memory allocations 2013-07-12 13:52:05 -03:00
parse-options.c perf tools: Add option macro OPT_BOOLEAN_SET 2013-11-27 14:58:36 -03:00
parse-options.h perf tools: Add option macro OPT_BOOLEAN_SET 2013-11-27 14:58:36 -03:00
path.c tools/perf: Turn strlcpy() into a __weak function 2013-10-09 08:48:49 +02:00
perf_regs.c perf callchain: Separate perf_reg_value function in perf_regs object 2014-02-18 09:34:49 -03:00
perf_regs.h perf callchain: Separate perf_reg_value function in perf_regs object 2014-02-18 09:34:49 -03:00
PERF-VERSION-GEN perf tools: Fix version when building out of tree 2013-11-07 10:40:47 -03:00
pmu.c perf tools: Move fs.* to lib/api/fs/ 2014-02-18 09:34:49 -03:00
pmu.h perf stat: fix NULL pointer reference bug with event unit 2014-01-20 16:19:08 -03:00
pmu.l perf tools: Add perf pmu object to access pmu format definition 2012-03-16 14:29:35 -03:00
pmu.y perf tools: Fix build with bison 2.3 and older. 2013-02-14 16:12:34 -03:00
probe-event.c perf probe: Allow to add events on the local functions 2014-02-18 09:38:43 -03:00
probe-event.h perf probe: Replace line_list with intlist 2014-02-18 09:34:50 -03:00
probe-finder.c perf probe: Find given address from offline dwarf 2014-02-18 09:34:51 -03:00
probe-finder.h perf probe: Find given address from offline dwarf 2014-02-18 09:34:51 -03:00
pstack.c perf tools: Stop using 'self' in pstack 2012-11-14 16:50:38 -03:00
pstack.h perf tools: Finish the removal of 'self' arguments 2013-11-05 15:32:36 -03:00
python-ext-sources perf tools: Move fs.* to lib/api/fs/ 2014-02-18 09:34:49 -03:00
python.c perf evlist: Introduce evlist__for_each() & friends 2014-01-13 10:06:25 -03:00
quote.c perf tools: Remove some unused functions 2010-05-18 23:03:35 -03:00
quote.h perf tools: Remove some unused functions 2010-05-18 23:03:35 -03:00
rblist.c perf util: Add findnew method to intlist 2013-10-14 10:28:48 -03:00
rblist.h perf util: Add findnew method to intlist 2013-10-14 10:28:48 -03:00
record.c perf tools: Move fs.* to lib/api/fs/ 2014-02-18 09:34:49 -03:00
run-command.c perf tools: Remove some unused functions 2010-05-18 23:03:35 -03:00
run-command.h perf tools: Remove some unused functions 2010-05-18 23:03:35 -03:00
session.c perf callchain: Add mask into struct regs_dump 2014-02-18 09:34:48 -03:00
session.h perf symbols: Add 'machine' member to struct addr_location 2013-12-19 17:38:27 -03:00
setup.py tools/: Convert to new topic libraries 2013-12-16 16:03:27 -03:00
sigchain.c perf tools: Remove some unused functions 2010-05-18 23:03:35 -03:00
sigchain.h perf tools: Remove some unused functions 2010-05-18 23:03:35 -03:00
sort.c perf sort: Do not compare dso again 2013-12-18 14:43:04 -03:00
sort.h perf tools: Remove unneeded include 2013-11-07 11:51:19 -03:00
srcline.c perf tools: Fix build error due to zfree() cast 2014-01-15 15:10:04 -03:00
stat.c perf stats: Add max and min stats 2013-08-07 17:35:26 -03:00
stat.h perf stats: Add max and min stats 2013-08-07 17:35:26 -03:00
strbuf.c perf tools: Use zfree to help detect use after free bugs 2013-12-27 17:08:19 -03:00
strbuf.h perf tools: Remove some unused functions 2010-05-18 23:03:35 -03:00
strfilter.c perf tools: Use zfree to help detect use after free bugs 2013-12-27 17:08:19 -03:00
strfilter.h perf tools: Finish the removal of 'self' arguments 2013-11-05 15:32:36 -03:00
string.c perf tools: Use zfree to help detect use after free bugs 2013-12-27 17:08:19 -03:00
strlist.c perf tools: Fix build error due to zfree() cast 2014-01-15 15:10:04 -03:00
strlist.h perf tools: Stop using 'self' in strlist 2013-01-25 12:49:28 -03:00
svghelper.c perf tools: Use zfree to help detect use after free bugs 2013-12-27 17:08:19 -03:00
svghelper.h perf timechart: Add --highlight option 2013-12-17 16:33:55 -03:00
symbol-elf.c perf symbols: Fix symbol annotation for relocated kernel 2014-01-31 17:21:47 -03:00
symbol-minimal.c perf tools: Use zfree to help detect use after free bugs 2013-12-27 17:08:19 -03:00
symbol.c perf symbols: No need to export dso__first_symbol 2014-02-18 09:34:49 -03:00
symbol.h perf probe: Allow to add events on the local functions 2014-02-18 09:38:43 -03:00
target.c perf record: Make per-cpu mmaps the default. 2013-11-27 14:58:36 -03:00
target.h perf target: Move the checking of which map function to call into function. 2013-12-04 13:46:37 -03:00
thread_map.c perf tools: Use zfree to help detect use after free bugs 2013-12-27 17:08:19 -03:00
thread_map.h perf evlist: Add thread_map__nr() helper 2013-03-15 13:06:02 -03:00
thread.c perf tools: Do proper comm override error handling 2014-01-16 16:44:39 -03:00
thread.h perf thread: Move comm_list check into function 2013-11-27 14:58:37 -03:00
tool.h perf tools: Add attr->mmap2 support 2013-09-11 10:09:32 -03:00
top.c perf tools: Rename 'perf_record_opts' to 'record_opts 2013-12-19 14:43:45 -03:00
top.h perf tools: Rename 'perf_record_opts' to 'record_opts 2013-12-19 14:43:45 -03:00
trace-event-info.c perf tools: Use zfree to help detect use after free bugs 2013-12-27 17:08:19 -03:00
trace-event-parse.c perf tools: Fix memory leak in event_format__print function 2014-02-18 09:34:47 -03:00
trace-event-read.c perf tools: Add trace-event object 2013-12-04 15:20:52 -03:00
trace-event-scripting.c perf symbols: Add 'machine' member to struct addr_location 2013-12-19 17:38:27 -03:00
trace-event.c tools lib traceevent: Make plugin unload function receive pevent 2014-01-15 15:10:40 -03:00
trace-event.h perf symbols: Add 'machine' member to struct addr_location 2013-12-19 17:38:27 -03:00
types.h perf tools: Add union u64_swap type for swapping u64 data 2012-05-22 12:50:25 -03:00
unwind-libunwind.c perf callchain: Separate perf_reg_value function in perf_regs object 2014-02-18 09:34:49 -03:00
unwind.h perf callchain: Introduce HAVE_DWARF_UNWIND_SUPPORT macro 2014-02-18 09:34:48 -03:00
usage.c perf target: Introduce perf_target__parse_uid() 2012-05-07 16:46:48 -03:00
util.c perf tools: Move fs.* to lib/api/fs/ 2014-02-18 09:34:49 -03:00
util.h perf tools: Introduce zfree 2013-12-27 15:17:00 -03:00
values.c perf tools: Use zfree to help detect use after free bugs 2013-12-27 17:08:19 -03:00
values.h
vdso.c perf symbols: Remove open coded management of long_name_allocated member 2013-12-10 16:51:09 -03:00
vdso.h perf tools: Back [vdso] DSO with real data 2012-09-11 12:08:30 -03:00
wrapper.c perf tools: Use __maybe_used for unused variables 2012-09-11 12:19:15 -03:00
xyarray.c perf tools: Introduce event selectors 2011-01-03 16:39:04 -02:00
xyarray.h perf tools: Introduce event selectors 2011-01-03 16:39:04 -02:00