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linux/tools/perf/util
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Jiri Olsa 8db4841fc7 perf symbols: Handle different endians properly during symbol load 
Currently we dont care about the file object's endianness. It's possible
we read buildid file object from different architecture than we are
currentlly running on. So we need to care about properly reading such
object's data - handle different endianness properly.

Adding:
	needs_swap DSO field
	dso__swap_init function to initialize DSO's needs_swap
	DSO__SWAP to read the data with proper swaps

Together with other endianity patches, this change fixies perf report
discrepancies on origin and target systems as described in test 1 below,
e.g. following perf report diff:

...
      0.12%               ps  [kernel.kallsyms]    [k] clear_page
-     0.12%              awk  bash                 [.] alloc_word_desc
+     0.12%              awk  bash                 [.] yyparse
      0.11%   beah-rhts-task  libpython2.6.so.1.0  [.] 0x5560e
      0.10%             perf  libc-2.12.so         [.] __ctype_toupper_loc
-     0.09%  rhts-test-runne  bash                 [.] maybe_make_export_env
+     0.09%  rhts-test-runne  bash                 [.] 0x385a0
      0.09%               ps  [kernel.kallsyms]    [k] page_fault
...

Note, running following to test perf endianity handling:
test 1)
  - origin system:
    # perf record -a -- sleep 10 (any perf record will do)
    # perf report > report.origin
    # perf archive perf.data

  - copy the perf.data, report.origin and perf.data.tar.bz2
    to a target system and run:
    # tar xjvf perf.data.tar.bz2 -C ~/.debug
    # perf report > report.target
    # diff -u report.origin report.target

  - the diff should produce no output
    (besides some white space stuff and possibly different
     date/TZ output)

test 1)
  - origin system:
    # perf record -ag -fo /tmp/perf.data -- sleep 1
  - mount origin system root to the target system on /mnt/origin
  - target system:
    # perf script --symfs /mnt/origin -I -i /mnt/origin/tmp/perf.data \
     --kallsyms /mnt/origin/proc/kallsyms
  - complete perf.data header is displayed

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
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/1338380624-7443-2-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-05-31 11:55:36 -03:00
..
include perf tools: Switch module.h into export.h 2012-03-26 17:19:57 +02:00
scripting-engines perf script: Rename struct event to struct event_format in perl engine 2012-05-22 12:32:29 -03:00
abspath.c perf tools: Remove some unused functions 2010-05-18 23:03:35 -03:00
alias.c perf_counter tools: Add more warnings and fix/annotate them 2009-07-01 12:49:48 +02:00
annotate.c perf annotate: Introduce ->free() method in ins_ops 2012-05-12 13:26:20 -03:00
annotate.h perf annotate: Introduce ->free() method in ins_ops 2012-05-12 13:26:20 -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 tools: Introduce perf_target__strerror() 2012-05-07 17:30:21 -03:00
debug.h perf tools: Move UI bits to tools/perf/ui directory 2012-04-11 17:16:40 -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
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: Ensure comm string is properly terminated 2012-02-29 18:29:45 -03:00
event.h perf tools: Add code to support PERF_SAMPLE_BRANCH_STACK 2012-03-09 08:26:04 +01:00
evlist.c perf evlist: Pass third argument to ioctl explicitly 2012-05-31 11:39:16 -03:00
evlist.h perf stat: Initialize default events wrt exclude_{guest,host} 2012-05-30 14:02:38 -03:00
evsel.c perf tools: Reconstruct event with modifiers from perf_event_attr 2012-05-25 16:38:11 -03:00
evsel.h perf tools: Reconstruct event with modifiers from perf_event_attr 2012-05-25 16:38:11 -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
header.c perf tools: rename HEADER_TRACE_INFO to HEADER_TRACING_DATA 2012-05-22 12:57:46 -03:00
header.h perf tools: rename HEADER_TRACE_INFO to HEADER_TRACING_DATA 2012-05-22 12:57:46 -03:00
help.c perf tools: Remove some unused functions 2010-05-18 23:03:35 -03:00
help.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
hist.c perf callchain: Make callchain cursors TLS 2012-05-31 10:47:12 -03:00
hist.h perf callchain: Make callchain cursors TLS 2012-05-31 10:47:12 -03:00
hweight.c perf tools: Don't use code surrounded by __KERNEL__ 2010-05-02 12:00:44 -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 annotate: Validate addr in symbol__inc_addr_samples 2012-04-05 19:51:14 -03:00
map.h perf annotate: Validate addr in symbol__inc_addr_samples 2012-04-05 19:51:14 -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: Add hardcoded name term for pmu events 2012-05-22 11:47:54 -03:00
parse-events.c perf tools: Reconstruct event with modifiers from perf_event_attr 2012-05-25 16:38:11 -03:00
parse-events.h perf tools: Add hardcoded name term for pmu events 2012-05-22 11:47:54 -03:00
parse-events.l perf tools: Add hardcoded name term for pmu events 2012-05-22 11:47:54 -03:00
parse-events.y perf tools: Add hardcoded name term for pmu events 2012-05-22 11:47:54 -03:00
parse-options.c perf options: Type check all the remaining OPT_ variants 2010-05-17 16:22:41 -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-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 hardcoded name term for pmu events 2012-05-22 11:47:54 -03:00
pmu.h perf tools: Add perf pmu object to access pmu format definition 2012-03-16 14:29:35 -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: Provide perf interface for uprobes 2012-05-11 13:58:17 -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: Allow multiple threads or processes in record, stat, top 2012-02-13 22:54:11 -02:00
python.c perf tools: Introduce per user view 2012-01-24 19:47:37 -02:00
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
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: Check if callchain is corrupted 2012-05-31 11:20:34 -03:00
session.h perf tools: Add code to support PERF_SAMPLE_BRANCH_STACK 2012-03-09 08:26:04 +01:00
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 Merge branch 'perf/urgent' into perf/core 2012-03-22 15:09:08 -03:00
sort.h perf report: Enable TUI in branch view mode 2012-03-09 08:26:08 +01:00
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 probe: Move strtailcmp to string.c 2011-07-15 16:00:47 -04:00
strlist.c perf probe: Fix --del to update current event list 2009-12-15 20:22:01 +01:00
strlist.h perf tools: Add for_each macros for strlist 2009-12-15 20:22:02 +01:00
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.c perf symbols: Handle different endians properly during symbol load 2012-05-31 11:55:36 -03:00
symbol.h perf symbols: Handle different endians properly during symbol load 2012-05-31 11:55:36 -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: Introduce perf_target__strerror() 2012-05-07 17:30:21 -03:00
target.h perf target: Add uses_mmap field 2012-05-17 12:32:54 -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
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
tool.h perf tools: Save some loops using perf_evlist__id2evsel 2011-11-28 17:57:40 -02:00
top.c perf top: Convert to struct perf_target 2012-05-02 15:20:30 -03:00
top.h perf top: Convert to struct perf_target 2012-05-02 15:20:30 -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 parse-events: Rename struct record to struct pevent_record 2012-04-25 13:35:48 +02:00
trace-event-read.c parse-events: Rename struct record to struct pevent_record 2012-04-25 13:35:48 +02:00
trace-event-scripting.c perf tools: Remove unnecessary ctype.h inclusion 2012-01-30 18:37:35 -02:00
trace-event.h parse-events: Rename struct record to struct pevent_record 2012-04-25 13:35:48 +02:00
types.h perf tools: Add union u64_swap type for swapping u64 data 2012-05-22 12:50:25 -03:00
usage.c perf target: Introduce perf_target__parse_uid() 2012-05-07 16:46:48 -03:00
util.c perf annotate browser: Align jump labels 2012-04-19 13:15:24 -03:00
util.h Fixes and improvements for perf/core: 2012-05-11 08:13:55 +02:00
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
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