perf report: Fix and improve the displaying of per-thread event counters

Improve and fix the handling of per-thread counter stats
recorded via perf record -s. Previously we only displayed
it in debug printouts (-D) and even that output was hard
to disambiguate.

I moved everything to utils/values.[ch] so that we may reuse
it in perf stat.

We get something like this now:

 #  PID   TID  cache-misses  cache-references
   4658  4659        495581           3238779
   4658  4662        498246           3236823
   4658  4663        499531           3243162

Then it'll be easy to add --pretty=raw to display a single line per thread/event.

By the way, -S was also used for --symbol... So I used -T/--thread here.

perf report: Add -T/--threads to display per-thread counter values

 We get something like this now:
 #  PID   TID  cache-misses  cache-references
   4658  4659        495581           3238779
   4658  4662        498246           3236823
   4658  4663        499531           3243162

Per-thread arrays of counter values are managed in utils/values.[ch]

Signed-off-by: Brice Goglin <Brice.Goglin@inria.fr>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: paulus@samba.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 2 insertions, 0 deletions

diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 60411e94113b..de7beac1095e 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -310,6 +310,7 @@ LIB_H += util/sigchain.h
 LIB_H += util/symbol.h
 LIB_H += util/module.h
 LIB_H += util/color.h
+LIB_H += util/values.h
 
 LIB_OBJS += util/abspath.o
 LIB_OBJS += util/alias.o
@@ -337,6 +338,7 @@ LIB_OBJS += util/color.o
 LIB_OBJS += util/pager.o
 LIB_OBJS += util/header.o
 LIB_OBJS += util/callchain.o
+LIB_OBJS += util/values.o
 
 BUILTIN_OBJS += builtin-annotate.o
 BUILTIN_OBJS += builtin-help.o