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-rw-r--r--tools/perf/builtin-stat.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 184ff95..8085509 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -83,6 +83,7 @@ static __u64 event_scaled[MAX_COUNTERS];
static __u64 runtime_nsecs;
static __u64 walltime_nsecs;
+static __u64 runtime_cycles;
static void create_perf_stat_counter(int counter)
{
@@ -177,6 +178,9 @@ static void read_counter(int counter)
if (attrs[counter].type == PERF_TYPE_SOFTWARE &&
attrs[counter].config == PERF_COUNT_TASK_CLOCK)
runtime_nsecs = count[0];
+ if (attrs[counter].type == PERF_TYPE_HARDWARE &&
+ attrs[counter].config == PERF_COUNT_CPU_CYCLES)
+ runtime_cycles = count[0];
}
/*
@@ -214,6 +218,13 @@ static void print_counter(int counter)
if (runtime_nsecs)
fprintf(stderr, " # %11.3f M/sec",
(double)count[0]/runtime_nsecs*1000.0);
+ if (runtime_cycles &&
+ attrs[counter].type == PERF_TYPE_HARDWARE &&
+ attrs[counter].config == PERF_COUNT_INSTRUCTIONS) {
+
+ fprintf(stderr, " # %1.3f per cycle",
+ (double)count[0] / (double)runtime_cycles);
+ }
}
if (scaled)
fprintf(stderr, " (scaled from %.2f%%)",
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