perf target: Add cpu flag to sample_type if target has cpu

Add PERF_SAMPLE_CPU flag into attr->sample_type if an user specified any
of cpu target (either system-wide or cpu list).

It will show correct values when cpu sort key is given for perf top and
perf report.

Signed-off-by: Namhyung Kim <namhyung.kim@lge.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1337564527-9367-1-git-send-email-namhyung.kim@lge.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-top.c

diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 3e981a7..18bd226 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -900,6 +900,9 @@
 			attr->read_format |= PERF_FORMAT_ID;
 		}
 
+		if (perf_target__has_cpu(&top->target))
+			attr->sample_type |= PERF_SAMPLE_CPU;
+
 		if (symbol_conf.use_callchain)
 			attr->sample_type |= PERF_SAMPLE_CALLCHAIN;
 

tools/perf/util/evsel.c

diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index f4f427c..9abd8ac 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -108,7 +108,7 @@
 	if (opts->call_graph)
 		attr->sample_type	|= PERF_SAMPLE_CALLCHAIN;
 
-	if (opts->target.system_wide)
+	if (perf_target__has_cpu(&opts->target))
 		attr->sample_type	|= PERF_SAMPLE_CPU;
 
 	if (opts->period)