microsoft
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WSL2-Linux-Kernel
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Код Задачи Пакеты Проекты Релизы Вики Активность
WSL2-Linux-Kernel/tools/perf/util
История
Masami Hiramatsu f182e3e13c perf probe: Avoid searching variables in intermediate scopes 
Fix variable searching logic to search one in inner than local scope or
global(CU) scope. In the other words, skip searching in intermediate
scopes.

e.g., in the following code,

int var1;

void inline infunc(int i)
{
    i++;   <--- [A]
}

void func(void)
{
   int var1, var2;
   infunc(var2);
}

At [A], "var1" should point the global variable "var1", however, if user
mis-typed as "var2", variable search should be failed. However, current
logic searches variable infunc() scope, global scope, and then func()
scope. Thus, it can find "var2" variable in func() scope. This may not
be what user expects.

So, it would better not search outer scopes except outermost (compile
unit) scope which contains only global variables, when it failed to find
given variable in local scope.

E.g.

Without this:
$ perf probe -V pre_schedule --externs > without.vars

With this:
$ perf probe -V pre_schedule --externs > with.vars

Check the diff:
$ diff without.vars with.vars
88d87
<               int     cpu
133d131
<               long unsigned int*      switch_count

These vars are actually in the scope of schedule(), the caller of
pre_schedule().

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: yrl.pp-manager.tt@hitachi.com
Link: http://lkml.kernel.org/r/20110811110305.19900.94374.stgit@fedora15
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 		2011-08-12 09:29:34 -03:00
..
include perf tools: Fix build on older systems 2011-05-26 11:16:29 -03:00
scripting-engines perf session: Pass evsel in event_ops->sample() 2011-03-23 19:28:58 -03:00
ui perf top browser: Remove spurious helpline update 2011-08-10 12:42:26 -03:00
PERF-VERSION-GEN perf: clear out make flags when calling kernel make kernelver 2011-06-15 22:12:55 +02:00
abspath.c
…
alias.c
…
annotate.c perf symbols: Rename dso->origin to dso->symtab_type 2011-03-11 13:28:45 -03:00
annotate.h perf top: Live TUI Annotation 2011-02-22 12:02:07 -03:00
bitmap.c
…
build-id.c perf session: Pass evsel in event_ops->sample() 2011-03-23 19:28:58 -03:00
build-id.h
…
cache.h perf tools: Don't fallback to setup_pager unconditionally 2011-01-31 18:08:39 -02:00
callchain.c perf tools: Kill event_t typedef, use 'union perf_event' instead 2011-01-29 16:25:37 -02:00
callchain.h perf tools: Add inverted call graph report support. 2011-06-30 00:24:30 +02:00
cgroup.c perf: Fix a build error with some GCC versions 2011-04-08 17:40:21 +02:00
cgroup.h perf tool: Add cgroup support 2011-02-16 13:30:48 +01:00
color.c
…
color.h
…
config.c perf tools: Check $HOME/.perfconfig ownership 2011-08-09 12:42:13 -03:00
cpumap.c perf tools: Add missing cpu_map__delete() 2011-01-22 19:56:30 -02:00
cpumap.h perf tools: Add missing cpu_map__delete() 2011-01-22 19:56:30 -02:00
ctype.c
…
debug.c perf tools: Fixup exit path when not able to open events 2011-03-29 13:40:27 -03:00
debug.h perf tools: Fixup exit path when not able to open events 2011-03-29 13:40:27 -03:00
debugfs.c
…
debugfs.h
…
dwarf-aux.c perf probe: Fix to search local variables in appropriate scope 2011-08-12 09:28:45 -03:00
dwarf-aux.h perf probe: Fix to search local variables in appropriate scope 2011-08-12 09:28:45 -03:00
environment.c
…
event.c perf evlist: Don't die if sample_{id_all|type} is invalid 2011-06-03 10:07:52 -03:00
event.h perf evlist: Don't die if sample_{id_all|type} is invalid 2011-06-03 10:07:52 -03:00
evlist.c perf evlist: Introduce 'disable' method 2011-07-25 11:06:19 -03:00
evlist.h perf evlist: Introduce 'disable' method 2011-07-25 11:06:19 -03:00
evsel.c perf evlist: Don't die if sample_{id_all|type} is invalid 2011-06-03 10:07:52 -03:00
evsel.h perf evlist: Don't die if sample_{id_all|type} is invalid 2011-06-03 10:07:52 -03:00
exec_cmd.c perf tools: Makefile: Remove various and sundry cruft 2011-02-18 07:43:06 -02:00
exec_cmd.h
…
generate-cmdlist.sh
…
header.c perf report: Use properly build_id kernel binaries 2011-08-11 08:58:03 -03:00
header.h perf tools: Move evlist sample helpers to evlist area 2011-05-22 03:12:29 +02:00
help.c
…
help.h
…
hist.c perf tools: Don't display ignored entries on stdio ui 2011-06-30 00:26:33 +02:00
hist.h perf session: Pass evsel in event_ops->sample() 2011-03-23 19:28:58 -03:00
hweight.c
…
levenshtein.c
…
levenshtein.h
…
map.c perf tools: Fix 64 bit integer format strings 2011-01-22 23:41:57 -02:00
map.h
…
pager.c
…
parse-events.c perf tools: De-opt the parse_events function 2011-07-21 10:41:11 +02:00
parse-events.h perf tools: De-opt the parse_events function 2011-07-21 10:41:11 +02:00
parse-options.c
…
parse-options.h perf options: add OPT_CALLBACK_DEFAULT_NOOPT 2010-12-06 15:33:29 -02:00
path.c
…
probe-event.c perf probe: Fix coredump introduced by probe module option 2011-08-08 09:35:41 -03:00
probe-event.h perf probe: Add probed module in front of function 2011-07-15 16:19:08 -04:00
probe-finder.c perf probe: Avoid searching variables in intermediate scopes 2011-08-12 09:29:34 -03:00
probe-finder.h perf probe: Fix to search local variables in appropriate scope 2011-08-12 09:28:45 -03:00
pstack.c
…
pstack.h
…
python.c perf python: Add PERF_RECORD_{LOST,READ,SAMPLE} routine tables 2011-07-25 17:13:27 -03:00
quote.c
…
quote.h
…
run-command.c
…
run-command.h
…
session.c perf script: Fix display of IP address for non-callchain path 2011-07-21 10:09:28 +02:00
session.h perf tools: Fix endian conversion reading event attr from file header 2011-07-21 09:57:36 +02:00
setup.py perf tools: Add support to install perf python extension 2011-08-08 12:54:26 -03:00
sigchain.c
…
sigchain.h
…
sort.c perf tools: Allow sort dimensions to be registered more than once 2011-06-30 00:26:41 +02:00
sort.h perf tools: Remove sort print helpers declarations 2011-06-30 00:26:19 +02:00
strbuf.c
…
strbuf.h
…
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
…
strlist.h
…
svghelper.c perf timechart: Fix black idle boxes in the title 2011-02-28 08:56:14 +01:00
svghelper.h
…
symbol.c perf: fix temporary file ownership check 2011-08-12 08:28:17 -03:00
symbol.h perf report: Use properly build_id kernel binaries 2011-08-11 08:58:03 -03:00
thread.c perf threads: Move thread_map to separate file 2011-01-24 10:59:00 -02:00
thread.h perf threads: Move thread_map to separate file 2011-01-24 10:59:00 -02:00
thread_map.c perf threads: Move thread_map to separate file 2011-01-24 10:59:00 -02:00
thread_map.h perf threads: Move thread_map to separate file 2011-01-24 10:59:00 -02:00
top.c perf top: Remove redundant syme->origin field 2011-03-11 13:28:45 -03:00
top.h perf symbol: Move sym_entry->skip to symbol->ignore 2011-03-11 13:36:01 -03:00
trace-event-info.c perf: Robustify proc and debugfs file recording 2011-07-14 15:53:01 -04:00
trace-event-parse.c rcu: Use softirq to address performance regression 2011-06-14 15:25:39 -07:00
trace-event-read.c
…
trace-event-scripting.c perf session: Pass evsel in event_ops->sample() 2011-03-23 19:28:58 -03:00
trace-event.h perf session: Pass evsel in event_ops->sample() 2011-03-23 19:28:58 -03:00
types.h perf tools: Fix 64 bit integer format strings 2011-01-22 23:41:57 -02:00
usage.c
…
util.c perf util: Move do_read from session to util 2011-01-03 16:50:55 -02:00
util.h perf probe: Move strtailcmp to string.c 2011-07-15 16:00:47 -04:00
values.c perf tools: Fix 64 bit integer format strings 2011-01-22 23:41:57 -02:00
values.h
…
wrapper.c
…
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