Instead of printing sec and usec individually, simplify
into a 'runtime' variable to later use accordingly. This
is particularly helpful when later adding multiple runs
and collecting statistics.
Signed-off-by: Davidlohr Bueso <davidl...@hp.com>
---
tools/perf/bench/sched-messaging.c | 13 +++++--------
1 file changed, 5 insertions(+), 8 deletions(-)
diff --git a/tools/perf/bench/sched-messaging.c
b/tools/perf/bench/sched-messaging.c
index cc1190a..df0828a 100644
--- a/tools/perf/bench/sched-messaging.c
+++ b/tools/perf/bench/sched-messaging.c
@@ -269,9 +269,9 @@ static const char * const bench_sched_message_usage[] = {
int bench_sched_messaging(int argc, const char **argv,
const char *prefix __maybe_unused)
{
- unsigned int i, total_children;
+ unsigned int i, total_children, num_fds = 20;
struct timeval start, stop, diff;
- unsigned int num_fds = 20;
+ unsigned long runtime;
int readyfds[2], wakefds[2];
char dummy;
pthread_t *pth_tab;
@@ -307,8 +307,8 @@ int bench_sched_messaging(int argc, const char **argv,
reap_worker(pth_tab[i]);
gettimeofday(&stop, NULL);
-
timersub(&stop, &start, &diff);
+ runtime = (diff.tv_sec * 1e3) + (diff.tv_usec/1e3);
switch (bench_format) {
case BENCH_FORMAT_DEFAULT:
@@ -317,13 +317,10 @@ int bench_sched_messaging(int argc, const char **argv,
printf("# %d groups == %d %s run\n\n",
num_groups, num_groups * 2 * num_fds,
thread_mode ? "threads" : "processes");
- printf(" %14s: %lu.%03lu [sec]\n", "Total time",
- diff.tv_sec,
- (unsigned long) (diff.tv_usec/1000));
+ printf(" %14s: %.3f [sec]\n", "Total time", runtime/1e3);
break;
case BENCH_FORMAT_SIMPLE:
- printf("%lu.%03lu\n", diff.tv_sec,
- (unsigned long) (diff.tv_usec/1000));
+ printf("%.3f\n", runtime/1e3);
break;
default:
/* reaching here is something disaster */
--
1.8.1.4
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