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5d67be97f8
linux/tools/perf/util
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Anton Blanchard 5d67be97f8 perf report/annotate/script: Add option to specify a CPU range 
Add an option to perf report/annotate/script to specify which
CPUs to operate on. This enables us to take a single system wide
profile and analyse each CPU (or group of CPUs) in isolation.

This was useful when profiling a multiprocess workload where the
bottleneck was on one CPU but this was hidden in the overall
profile. Per process and per thread breakdowns didn't help
because multiple processes were running on each CPU and no
single process consumed an entire CPU.

The patch converts the list of CPUs returned by cpu_map__new
into a bitmap for fast lookup. I wanted to use -C to be
consistent with perf top/record/stat, but unfortunately perf
report already uses -C <comms>.

 v2: Incorporate suggestions from David Ahern:
	- Added -c to perf script
	- Check that SAMPLE_CPU is set when -c is used
	- Update documentation

 v3: Create perf_session__cpu_bitmap()

Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: David Ahern <dsahern@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Link: http://lkml.kernel.org/r/20110704215750.11647eb9@kryten
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-07-05 10:44:44 +02:00
..
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: Only include annotate.h once in tools/perf/util/ui/browsers/annotate.c 2011-05-10 10:20:07 +02:00
abspath.c perf tools: Remove some unused functions 2010-05-18 23:03:35 -03:00
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 perf annotate: Use build-ids to find the right DSO 2010-05-20 12:15:33 -03:00
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 buildid: add perfconfig option to specify buildid cache dir 2010-06-05 09:34:04 -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
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: Don't die if sample_{id_all|type} is invalid 2011-06-03 10:07:52 -03:00
evlist.h perf evlist: Don't die if sample_{id_all|type} is invalid 2011-06-03 10:07:52 -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 perf tools: Remove some unused functions 2010-05-18 23:03:35 -03:00
generate-cmdlist.sh
header.c perf symbols: Handle /proc/sys/kernel/kptr_restrict 2011-05-26 11:15:25 -03:00
header.h perf tools: Move evlist sample helpers to evlist area 2011-05-22 03:12:29 +02:00
help.c perf tools: Remove some unused functions 2010-05-18 23:03:35 -03:00
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 perf probe: Add basic module support 2010-10-21 16:11:44 -02:00
pager.c
parse-events.c perf: Fix multi-event parsing bug 2011-05-17 20:45:36 +02:00
parse-events.h perf script: Add support for H/W and S/W events 2011-03-14 17:07:20 -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: clear out make flags when calling kernel make kernelver 2011-06-15 22:12:55 +02:00
probe-event.c perf probe: Fix multiple --vars options behavior 2011-04-05 15:36:04 -03:00
probe-event.h perf probe: Add filters support for available functions 2011-01-28 09:20:25 -02:00
probe-finder.c perf probe: Fix the missed parameter initialization 2011-05-10 17:06:23 +02:00
probe-finder.h perf probe: Add fastpath to do lookup by function name 2011-03-29 13:40:27 -03:00
pstack.c
pstack.h perf ui: Move hists browser to util/ui/browsers/ 2010-08-10 16:11:08 -03:00
python.c perf python: Fix argument name list of read_on_cpu() 2011-06-03 10:09:22 -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
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 report/annotate/script: Add option to specify a CPU range 2011-07-05 10:44:44 +02:00
session.h perf report/annotate/script: Add option to specify a CPU range 2011-07-05 10:44:44 +02:00
setup.py perf tools: Fix NO_NEWT=1 python build error 2011-03-29 16:46:57 -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 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 perf tools: Remove some unused functions 2010-05-18 23:03:35 -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 Fix common misspellings 2011-03-31 11:26:23 -03:00
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 symbols: Handle /proc/sys/kernel/kptr_restrict 2011-05-26 11:15:25 -03:00
symbol.h perf symbols: Handle /proc/sys/kernel/kptr_restrict 2011-05-26 11:15:25 -03:00
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
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
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 tools: Introduce event selectors 2011-01-03 16:39:04 -02:00
trace-event-parse.c rcu: Use softirq to address performance regression 2011-06-14 15:25:39 -07:00
trace-event-read.c perf: Use read() instead of lseek() in trace_event_read.c:skip() 2010-05-20 08:37:17 +02:00
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 tools: Makefile: Remove platform-specific cruft 2011-02-18 07:42:07 -02:00
values.c perf tools: Fix 64 bit integer format strings 2011-01-22 23:41:57 -02:00
values.h
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