2 files changed, 17 insertions, 4 deletions

diff --git a/tools/perf/Documentation/perf-stat.txt b/tools/perf/Documentation/perf-stat.txt
index 2cab8e8c33d0..909fa766fa1c 100644
--- a/tools/perf/Documentation/perf-stat.txt
+++ b/tools/perf/Documentation/perf-stat.txt
@@ -43,6 +43,9 @@ OPTIONS
 -c::
         scale counter values
 
+-B::
+        print large numbers with thousands' separators according to locale
+
 EXAMPLES
 --------
 
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index ff8c413b7e73..9a39ca3c3ac4 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -50,6 +50,7 @@
 
 #include <sys/prctl.h>
 #include <math.h>
+#include <locale.h>
 
 static struct perf_event_attr default_attrs[] = {
 
@@ -80,6 +81,8 @@ static pid_t			*all_tids			=  NULL;
 static int                      thread_num                      =  0;
 static pid_t                    child_pid                       = -1;
 static bool                     null_run                        =  false;
+static bool                     big_num                         =  false;
+
 
 static int                      *fd[MAX_NR_CPUS][MAX_COUNTERS];
 
@@ -377,7 +380,7 @@ static void nsec_printout(int counter, double avg)
 {
         double msecs = avg / 1e6;
 
-        fprintf(stderr, " %14.6f  %-24s", msecs, event_name(counter));
+        fprintf(stderr, " %18.6f  %-24s", msecs, event_name(counter));
 
         if (MATCH_EVENT(SOFTWARE, SW_TASK_CLOCK, counter)) {
                 fprintf(stderr, " # %10.3f CPUs ",
@@ -389,7 +392,10 @@ static void abs_printout(int counter, double avg)
 {
         double total, ratio = 0.0;
 
-        fprintf(stderr, " %14.0f  %-24s", avg, event_name(counter));
+        if (big_num)
+                fprintf(stderr, " %'18.0f  %-24s", avg, event_name(counter));
+        else
+                fprintf(stderr, " %18.0f  %-24s", avg, event_name(counter));
 
         if (MATCH_EVENT(HARDWARE, HW_INSTRUCTIONS, counter)) {
                 total = avg_stats(&runtime_cycles_stats);
@@ -426,7 +432,7 @@ static void print_counter(int counter)
         int scaled = event_scaled[counter];
 
         if (scaled == -1) {
-                fprintf(stderr, " %14s  %-24s\n",
+                fprintf(stderr, " %18s  %-24s\n",
                         "<not counted>", event_name(counter));
                 return;
         }
@@ -477,7 +483,7 @@ static void print_stat(int argc, const char **argv)
                 print_counter(counter);
 
         fprintf(stderr, "\n");
-        fprintf(stderr, " %14.9f  seconds time elapsed",
+        fprintf(stderr, " %18.9f  seconds time elapsed",
                         avg_stats(&walltime_nsecs_stats)/1e9);
         if (run_count > 1) {
                 fprintf(stderr, "   ( +- %7.3f%% )",
@@ -534,6 +540,8 @@ static const struct option options[] = {
                     "repeat command and print average + stddev (max: 100)"),
         OPT_BOOLEAN('n', "null", &null_run,
                     "null run - dont start any counters"),
+        OPT_BOOLEAN('B', "big-num", &big_num,
+                    "print large numbers with thousands\' separators"),
         OPT_END()
 };
 
@@ -542,6 +550,8 @@ int cmd_stat(int argc, const char **argv, const char *prefix __used)
         int status;
         int i,j;
 
+        setlocale(LC_ALL, "");
+
         argc = parse_options(argc, argv, options, stat_usage,
                 PARSE_OPT_STOP_AT_NON_OPTION);
         if (!argc && target_pid == -1 && target_tid == -1)