perf stat: Add branch performance metric

[linux-2.6-block.git] / tools / perf / builtin-stat.c

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 3db31e7bf1737a438cc93e4648e987ec0073aeb1..c37368343fffa44c53e02d515f65f8a06c0d1976 100644 (file)
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -125,6 +125,7 @@ struct stats                        event_res_stats[MAX_COUNTERS][3];
 struct stats                   runtime_nsecs_stats;
 struct stats                   walltime_nsecs_stats;
 struct stats                   runtime_cycles_stats;
+struct stats                   runtime_branches_stats;
 
 #define MATCH_EVENT(t, c, counter)                     \
        (attrs[counter].type == PERF_TYPE_##t &&        \
@@ -235,6 +236,8 @@ static void read_counter(int counter)
                update_stats(&runtime_nsecs_stats, count[0]);
        if (MATCH_EVENT(HARDWARE, HW_CPU_CYCLES, counter))
                update_stats(&runtime_cycles_stats, count[0]);
+       if (MATCH_EVENT(HARDWARE, HW_BRANCH_INSTRUCTIONS, counter))
+               update_stats(&runtime_branches_stats, count[0]);
 }
 
 static int run_perf_stat(int argc __used, const char **argv)
@@ -352,6 +355,14 @@ static void abs_printout(int counter, double avg)
                        ratio = avg / total;
 
                fprintf(stderr, " # %10.3f IPC  ", ratio);
+       } else if (MATCH_EVENT(HARDWARE, HW_BRANCH_MISSES, counter)) {
+               total = avg_stats(&runtime_branches_stats);
+
+               if (total)
+                       ratio = avg * 100 / total;
+
+               fprintf(stderr, " # %10.3f %%  ", ratio);
+
        } else {
                total = avg_stats(&runtime_nsecs_stats);