1 files changed, 19 insertions, 8 deletions

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index a9f06715e44..5deb17d9e79 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -61,6 +61,8 @@
 #include <locale.h>
 
 #define DEFAULT_SEPARATOR       " "
+#define CNTR_NOT_SUPPORTED      "<not supported>"
+#define CNTR_NOT_COUNTED        "<not counted>"
 
 static struct perf_event_attr default_attrs[] = {
 
@@ -191,6 +193,7 @@ static int			big_num_opt			=  -1;
 static const char               *cpu_list;
 static const char               *csv_sep                        = NULL;
 static bool                     csv_output                      = false;
+static bool                     group                           = false;
 
 static volatile int done = 0;
 
@@ -278,14 +281,14 @@ static int create_perf_stat_counter(struct perf_evsel *evsel)
         attr->inherit = !no_inherit;
 
         if (system_wide)
-                return perf_evsel__open_per_cpu(evsel, evsel_list->cpus, false);
+                return perf_evsel__open_per_cpu(evsel, evsel_list->cpus, group);
 
         if (target_pid == -1 && target_tid == -1) {
                 attr->disabled = 1;
                 attr->enable_on_exec = 1;
         }
 
-        return perf_evsel__open_per_thread(evsel, evsel_list->threads, false);
+        return perf_evsel__open_per_thread(evsel, evsel_list->threads, group);
 }
 
 /*
@@ -448,6 +451,7 @@ static int run_perf_stat(int argc __used, const char **argv)
                                 if (verbose)
                                         ui__warning("%s event is not supported by the kernel.\n",
                                                     event_name(counter));
+                                counter->supported = false;
                                 continue;
                         }
 
@@ -466,6 +470,7 @@ static int run_perf_stat(int argc __used, const char **argv)
                         die("Not all events could be opened.\n");
                         return -1;
                 }
+                counter->supported = true;
         }
 
         if (perf_evlist__set_filters(evsel_list)) {
@@ -513,7 +518,10 @@ static void print_noise_pct(double total, double avg)
         if (avg)
                 pct = 100.0*total/avg;
 
-        fprintf(stderr, "  ( +-%6.2f%% )", pct);
+        if (csv_output)
+                fprintf(stderr, "%s%.2f%%", csv_sep, pct);
+        else
+                fprintf(stderr, "  ( +-%6.2f%% )", pct);
 }
 
 static void print_noise(struct perf_evsel *evsel, double avg)
@@ -861,7 +869,7 @@ static void print_counter_aggr(struct perf_evsel *counter)
         if (scaled == -1) {
                 fprintf(stderr, "%*s%s%*s",
                         csv_output ? 0 : 18,
-                        "<not counted>",
+                        counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
                         csv_sep,
                         csv_output ? 0 : -24,
                         event_name(counter));
@@ -878,13 +886,13 @@ static void print_counter_aggr(struct perf_evsel *counter)
         else
                 abs_printout(-1, counter, avg);
 
+        print_noise(counter, avg);
+
         if (csv_output) {
                 fputc('\n', stderr);
                 return;
         }
 
-        print_noise(counter, avg);
-
         if (scaled) {
                 double avg_enabled, avg_running;
 
@@ -914,7 +922,8 @@ static void print_counter(struct perf_evsel *counter)
                                 csv_output ? 0 : -4,
                                 evsel_list->cpus->map[cpu], csv_sep,
                                 csv_output ? 0 : 18,
-                                "<not counted>", csv_sep,
+                                counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
+                                csv_sep,
                                 csv_output ? 0 : -24,
                                 event_name(counter));
 
@@ -1024,7 +1033,7 @@ static int stat__set_big_num(const struct option *opt __used,
 static const struct option options[] = {
         OPT_CALLBACK('e', "event", &evsel_list, "event",
                      "event selector. use 'perf list' to list available events",
-                     parse_events),
+                     parse_events_option),
         OPT_CALLBACK(0, "filter", &evsel_list, "filter",
                      "event filter", parse_filter),
         OPT_BOOLEAN('i', "no-inherit", &no_inherit,
@@ -1035,6 +1044,8 @@ static const struct option options[] = {
                     "stat events on existing thread id"),
         OPT_BOOLEAN('a', "all-cpus", &system_wide,
                     "system-wide collection from all CPUs"),
+        OPT_BOOLEAN('g', "group", &group,
+                    "put the counters into a counter group"),
         OPT_BOOLEAN('c', "scale", &scale,
                     "scale/normalize counters"),
         OPT_INCR('v', "verbose", &verbose,