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7dbf4dcfe2
linux/tools/perf/util
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Jiri Olsa 7dbf4dcfe2 perf tools: Back [vdso] DSO with real data 
Storing data for VDSO shared object, because we need it for the post
unwind processing.

The VDSO shared object is same for all process on a running system, so
it makes no difference when we store it inside the tracer - perf.

When [vdso] map memory is hit, we retrieve [vdso] DSO image and store it
into temporary file.

During the build-id processing phase, the [vdso] DSO image is stored in
build-id db, and build-id reference is made inside perf.data. The
build-id vdso file object is called '[vdso]'. We don't use temporary
file name which gets removed when record is finished.

During report phase the vdso build-id object is treated as any other
build-id DSO object.

Adding following API for vdso object:

  bool is_vdso_map(const char *filename)
    - returns true if the filename matches vdso map name

  struct dso *vdso__dso_findnew(struct list_head *head)
    - find/create proper vdso DSO object

  vdso__exit(void)
    - removes temporary VDSO image if there's any

This change makes backtrace dwarf post unwind possible from [vdso] maps.

Following output is current report of [vdso] sample dwarf backtrace:

  # Overhead  Command      Shared Object                         Symbol
  # ........  .......  .................  .............................
  #
      99.52%       ex  [vdso]             [.] 0x00007fff3ace89af
                   |
                   --- 0x7fff3ace89af

Following output is new report of [vdso] sample dwarf backtrace:

  # Overhead  Command      Shared Object                         Symbol
  # ........  .......  .................  .............................
  #
      99.52%       ex  [vdso]             [.] 0x00000000000009af
                   |
                   --- 0x7fff3ace89af
                       main
                       __libc_start_main
                       _start

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1347295819-23177-5-git-send-email-jolsa@redhat.com
[ committer note: s/ALIGN/PERF_ALIGN/g to cope with the android build changes ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-09-11 12:08:30 -03:00
..
include perf tools: Add memdup function 2012-09-11 12:04:41 -03:00
scripting-engines perf tools: remove unneeded include of network header files 2012-09-05 17:45:12 -03:00
abspath.c perf tools: Remove some unused functions 2010-05-18 23:03:35 -03:00
alias.c
annotate.c perf annotate: Make a copy of filename for passing to basename 2012-09-08 17:14:43 -03:00
annotate.h perf tools: include missing pthread.h header 2012-09-07 22:08:09 -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 buildid-list: Work better with pipe mode 2012-05-22 13:03:54 -03:00
build-id.h perf tools: Rename perf_event_ops to perf_tool 2011-11-28 10:39:28 -02:00
cache.h perf ui: Change fallback policy of setup_browser() 2012-05-02 16:17:37 -03:00
callchain.c perf callchain: Make callchain cursors TLS 2012-05-31 10:47:12 -03:00
callchain.h perf callchain: Make callchain cursors TLS 2012-05-31 10:47:12 -03:00
cgroup.c perf tools: Eliminate duplicate code and use PATH_MAX consistently 2011-11-28 10:11:04 -02:00
cgroup.h perf tool: Add cgroup support 2011-02-16 13:30:48 +01:00
color.c perf tools: Use scnprintf where applicable 2012-03-14 12:36:19 -03:00
color.h perf hist: Replace ->print() routines by ->snprintf() equivalents 2010-04-02 16:28:15 -03:00
config.c perf config: Allow '_' in config file variable names 2012-05-29 21:59:02 -03:00
cpumap.c perf tools: Add fprintf methods for thread_map and cpu_map classes 2012-01-24 19:46:48 -02:00
cpumap.h perf tools: Add fprintf methods for thread_map and cpu_map classes 2012-01-24 19:46:48 -02:00
ctype.c perf tools: ctype.c only wants util.h 2012-02-13 23:17:40 -02:00
debug.c perf ui gtk: Add perf_gtk__show_helpline() for pr_* 2012-08-17 12:37:56 -03:00
debug.h perf ui gtk: Add perf_gtk__show_helpline() for pr_* 2012-08-17 12:37:56 -03:00
debugfs.c perf tools: Remove unused functions from debugfs object 2012-02-13 23:25:38 -02:00
debugfs.h perf tools: Remove unused functions from debugfs object 2012-02-13 23:25:38 -02:00
dso-test-data.c perf tools: replace mkostemp with mkstemp 2012-09-07 22:10:44 -03:00
dwarf-aux.c perf probe: Filter out redundant inline-instances 2011-08-12 09:34:35 -03:00
dwarf-aux.h perf probe: Search concrete out-of-line instances 2011-08-12 09:32:10 -03:00
environment.c
event.c perf tools: fix ALIGN redefinition in system headers 2012-09-11 11:48:30 -03:00
event.h perf tools: fix ALIGN redefinition in system headers 2012-09-11 11:48:30 -03:00
evlist.c perf evlist: Add fprintf method 2012-09-06 14:54:11 -03:00
evlist.h perf evlist: Add fprintf method 2012-09-06 14:54:11 -03:00
evsel.c perf test: Add round trip test for sw and hw event names 2012-09-06 13:11:18 -03:00
evsel.h perf diff: Make diff command work with evsel hists 2012-09-07 21:44:02 -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 perf symbols: Support minimal build without libelf 2012-08-09 16:26:38 -03:00
header.c perf tools: Back [vdso] DSO with real data 2012-09-11 12:08:30 -03:00
header.h perf tools: Back [vdso] DSO with real data 2012-09-11 12:08:30 -03:00
help.c perf tools: fix missing winsize definition 2012-09-07 22:07:32 -03:00
help.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
hist.c perf hists: Use perf_hpp__format->width to calculate the column widths 2012-09-08 13:20:05 -03:00
hist.h perf hists: Introduce perf_hpp for hist period printing 2012-09-08 13:19:44 -03:00
hweight.c perf tools: Don't use code surrounded by __KERNEL__ 2010-05-02 12:00:44 -03:00
intlist.c perf tools: Fix intlist node removal 2012-09-05 17:35:24 -03:00
intlist.h perf tools: Introduce intlist 2012-08-03 10:42:25 -03:00
levenshtein.c
levenshtein.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
map.c perf tools: Back [vdso] DSO with real data 2012-09-11 12:08:30 -03:00
map.h perf symbols: Remove unused function map__objdump_2ip 2012-08-13 12:55:09 -03:00
pager.c perf tools: Fix pager on minimal-install embedded systems 2012-05-30 15:10:39 -03:00
parse-events-test.c perf tools: Catch event names from command line 2012-08-22 13:40:49 -03:00
parse-events.c perf tools: Fix cache event name generation 2012-09-06 15:01:08 -03:00
parse-events.h perf tools: Catch event names from command line 2012-08-22 13:40:49 -03:00
parse-events.l perf tools: Catch event names from command line 2012-08-22 13:40:49 -03:00
parse-events.y perf tools: Catch event names from command line 2012-08-22 13:40:49 -03:00
parse-options.c perf tool: Save cmdline from user in file header vs what is passed to record 2012-08-03 10:33:50 -03:00
parse-options.h perf options: add OPT_CALLBACK_DEFAULT_NOOPT 2010-12-06 15:33:29 -02:00
path.c perf tools: add test for strlcpy() 2010-08-21 11:22:47 -03:00
perf_regs.h perf tools: Add interface to arch registers sets 2012-08-10 16:32:59 -03:00
PERF-VERSION-GEN perf tools: Make --version show kernel version instead of pull req tag 2012-05-31 11:20:59 -03:00
pmu.c perf tools: Add pmu mappings to header information 2012-08-22 15:22:55 -03:00
pmu.h perf tools: Add pmu mappings to header information 2012-08-22 15:22:55 -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: Add perf pmu object to access pmu format definition 2012-03-16 14:29:35 -03:00
probe-event.c perf probe: Make a copy of exec path for passing to basename 2012-09-08 17:15:04 -03:00
probe-event.h perf probe: Provide perf interface for uprobes 2012-05-11 13:58:17 -03:00
probe-finder.c perf probe: Finder fails to resolve function name to address 2012-03-28 11:56:49 -03:00
probe-finder.h perf tools: Eliminate duplicate code and use PATH_MAX consistently 2011-11-28 10:11:04 -02:00
pstack.c perf newt: Make <- zoom out filters 2010-05-14 20:05:21 -03:00
pstack.h perf ui: Move hists browser to util/ui/browsers/ 2010-08-10 16:11:08 -03:00
python-ext-sources perf tools: Add missing files to build the python binding 2012-08-14 14:17:30 -03:00
python.c perf evlist: Rename __group method to __set_leader 2012-08-15 10:13:56 -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 tools: Introducing rblist 2012-08-03 10:37:21 -03:00
rblist.h perf tools: Introducing rblist 2012-08-03 10:37:21 -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 tools: Back [vdso] DSO with real data 2012-09-11 12:08:30 -03:00
session.h perf diff: Make diff command work with evsel hists 2012-09-07 21:44:02 -03:00
setup.py perf tools: Fix build dependency of perf python extension 2012-02-13 18:01:25 -02:00
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 tools: Replace sort's standalone field_sep with symbol_conf.field_sep 2012-09-07 21:50:11 -03:00
sort.h perf tools: Replace sort's standalone field_sep with symbol_conf.field_sep 2012-09-07 21:50:11 -03:00
strbuf.c perf tools: Use scnprintf where applicable 2012-03-14 12:36:19 -03:00
strbuf.h perf tools: Remove some unused functions 2010-05-18 23:03:35 -03:00
strfilter.c perf: Fix missing strndup declaration 2011-03-04 01:17:18 +01:00
strfilter.h perf tools: Add strfilter for general purpose string filter 2011-01-28 09:19:38 -02:00
string.c perf tools: Add memdup function 2012-09-11 12:04:41 -03:00
strlist.c perf tools: Remove the node from rblist in strlist__remove 2012-09-05 17:36:42 -03:00
strlist.h perf tools: Change strlist to use the new rblist 2012-08-03 10:39:51 -03:00
svghelper.c perf timechart: Fix black idle boxes in the title 2011-02-28 08:56:14 +01:00
svghelper.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
symbol-elf.c perf symbols: Fix builds with NO_LIBELF set 2012-08-20 09:35:22 -03:00
symbol-minimal.c perf symbols: Use both runtime and debug images 2012-08-13 14:46:55 -03:00
symbol.c perf symbols: Make dsos__find function globally available 2012-09-11 12:05:16 -03:00
symbol.h perf symbols: Make dsos__find function globally available 2012-09-11 12:05:16 -03:00
sysfs.c perf tools: Add sysfs mountpoint interface 2012-02-13 23:27:15 -02:00
sysfs.h perf tools: Add sysfs mountpoint interface 2012-02-13 23:27:15 -02:00
target.c perf tools: Replace mempcpy with memcpy 2012-09-05 19:35:21 -03:00
target.h perf target: Add uses_mmap field 2012-05-17 12:32:54 -03:00
thread_map.c perf tools: fix thread_map__new_by_pid_str() memory leak in error path 2012-05-25 11:40:59 -03:00
thread_map.h perf tools: Fix thread map that is type pid_t 2012-04-11 17:38:50 -03:00
thread.c perf session: Move threads to struct machine 2011-11-28 10:35:31 -02:00
thread.h perf tools: Resolve machine earlier and pass it to perf_event_ops 2011-11-28 10:39:12 -02:00
tool.h perf tools: Save some loops using perf_evlist__id2evsel 2011-11-28 17:57:40 -02:00
top.c perf evlist: Introduce evsel list accessors 2012-08-15 10:14:18 -03:00
top.h perf tools: fix missing winsize definition 2012-09-07 22:07:32 -03:00
trace-event-info.c perf: Have perf use the new libtraceevent.a library 2012-04-25 13:28:48 +02:00
trace-event-parse.c perf script: Fix a NULL pointer dereference 2012-08-14 10:36:30 -03:00
trace-event-read.c perf tools: Stop using a global trace events description list 2012-06-27 13:08:42 -03:00
trace-event-scripting.c perf script: Replace "struct thread" with "struct addr_location" as a parameter for "process_event()" 2012-08-08 12:46:40 -03:00
trace-event.h perf tools: Support for DWARF CFI unwinding on post processing 2012-08-11 15:06:56 -03:00
types.h perf tools: Add union u64_swap type for swapping u64 data 2012-05-22 12:50:25 -03:00
unwind.c perf tools: Support for DWARF CFI unwinding on post processing 2012-08-11 15:06:56 -03:00
unwind.h perf tools: Support for DWARF CFI unwinding on post processing 2012-08-11 15:06:56 -03:00
usage.c perf target: Introduce perf_target__parse_uid() 2012-05-07 16:46:48 -03:00
util.c perf tools: add NO_BACKTRACE for application self-debugging 2012-09-07 22:12:30 -03:00
util.h perf tools: include wrapper for magic.h 2012-09-11 11:38:10 -03:00
values.c perf tools: Fix a memory leak on perf_read_values_destroy 2011-12-20 13:41:34 -02:00
values.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
vdso.c perf tools: Back [vdso] DSO with real data 2012-09-11 12:08:30 -03:00
vdso.h perf tools: Back [vdso] DSO with real data 2012-09-11 12:08:30 -03:00
wrapper.c perf tools: remove xstrndup, xmalloc, xzalloc 2010-05-18 23:05:28 -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