diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/builtin-stat.c | 31 |
1 files changed, 14 insertions, 17 deletions
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index 32b5c003f7f..61b828236c1 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -74,7 +74,6 @@ static int null_run = 0; static int fd[MAX_NR_CPUS][MAX_COUNTERS]; -static u64 event_res[MAX_COUNTERS][3]; static int event_scaled[MAX_COUNTERS]; struct stats @@ -179,14 +178,12 @@ static inline int nsec_counter(int counter) */ static void read_counter(int counter) { - u64 *count, single_count[3]; + u64 count[3], single_count[3]; unsigned int cpu; size_t res, nv; int scaled; int i; - count = event_res[counter]; - count[0] = count[1] = count[2] = 0; nv = scale ? 3 : 1; @@ -318,13 +315,16 @@ static int run_perf_stat(int argc __used, const char **argv) return WEXITSTATUS(status); } -static void print_noise(double avg, double stddev) +static void print_noise(int counter, double avg) { - if (run_count > 1) - fprintf(stderr, " ( +- %7.3f%% )", 100*stddev / avg); + if (run_count == 1) + return; + + fprintf(stderr, " ( +- %7.3f%% )", + 100 * stddev_stats(&event_res_stats[counter][0]) / avg); } -static void nsec_printout(int counter, double avg, double stddev) +static void nsec_printout(int counter, double avg) { double msecs = avg / 1e6; @@ -334,10 +334,9 @@ static void nsec_printout(int counter, double avg, double stddev) fprintf(stderr, " # %10.3f CPUs ", avg / avg_stats(&walltime_nsecs_stats)); } - print_noise(avg, stddev); } -static void abs_printout(int counter, double avg, double stddev) +static void abs_printout(int counter, double avg) { fprintf(stderr, " %14.0f %-24s", avg, event_name(counter)); @@ -348,7 +347,6 @@ static void abs_printout(int counter, double avg, double stddev) fprintf(stderr, " # %10.3f M/sec", 1000.0 * avg / avg_stats(&runtime_nsecs_stats)); } - print_noise(avg, stddev); } /* @@ -356,12 +354,9 @@ static void abs_printout(int counter, double avg, double stddev) */ static void print_counter(int counter) { - double avg, stddev; + double avg = avg_stats(&event_res_stats[counter][0]); int scaled = event_scaled[counter]; - avg = avg_stats(&event_res_stats[counter][0]); - stddev = stddev_stats(&event_res_stats[counter][0]); - if (scaled == -1) { fprintf(stderr, " %14s %-24s\n", "<not counted>", event_name(counter)); @@ -369,9 +364,11 @@ static void print_counter(int counter) } if (nsec_counter(counter)) - nsec_printout(counter, avg, stddev); + nsec_printout(counter, avg); else - abs_printout(counter, avg, stddev); + abs_printout(counter, avg); + + print_noise(counter, avg); if (scaled) { double avg_enabled, avg_running; |