The quiet option is useful for automated test setups where
only the final result of the run is interesting. This avoids
to fill up the logs.
Signed-off-by: Daniel Wagner <dwagner@xxxxxxx>
---
src/sched_deadline/cyclicdeadline.8 | 6 +++++-
src/sched_deadline/cyclicdeadline.c | 22 +++++++++++++++++-----
2 files changed, 22 insertions(+), 6 deletions(-)
diff --git a/src/sched_deadline/cyclicdeadline.8 b/src/sched_deadline/cyclicdeadline.8
index def42f77044a..59b60ca7bd31 100644
--- a/src/sched_deadline/cyclicdeadline.8
+++ b/src/sched_deadline/cyclicdeadline.8
@@ -17,7 +17,7 @@ cyclicdeadline \- This program is used to test the deadline scheduler (SCHED_DEA
.PP
.SH SYNOPSIS
.B cyclicdeadline
-.RI "[-a [CPUSET]] [-D TIME] [-h] [-i INTV] [-s STEP] [-t NUM]"
+.RI "[-a [CPUSET]] [-D TIME] [-h] [-i INTV] [-s STEP] [-t NUM] [-q]"
.PP
.SH DESCRIPTION
.B cyclicdeadline
@@ -43,6 +43,10 @@ The amount to increase the deadline for each task in us. (default 500us)
.TP
.B \-t \-\-threads NUM
The number of threads to run as deadline (default 1)
+.TP
+.B \-q, \-\-quiet
+Print a summary only on exit. Useful for automated tests, where only
+the summary output needs to be captured.
.br
.SH AUTHOR
cyclicdeadline was written by Steven Rostedt <rostedt@xxxxxxxxxxx>
diff --git a/src/sched_deadline/cyclicdeadline.c b/src/sched_deadline/cyclicdeadline.c
index 7adc91465f44..40b514c5e7e0 100644
--- a/src/sched_deadline/cyclicdeadline.c
+++ b/src/sched_deadline/cyclicdeadline.c
@@ -108,6 +108,8 @@ static int use_nsecs;
static int mark_fd;
+static int quiet;
+
static int find_mount(const char *mount, char *debugfs)
{
char type[100];
@@ -627,6 +629,7 @@ static void usage(int error)
"-s STEP --step The amount to increase the deadline for each task in us\n"
" (default 500us).\n"
"-t NUM --threads The number of threads to run as deadline (default 1).\n"
+ "-q --quiet print a summary only on exit\n"
);
exit(error);
}
@@ -966,13 +969,18 @@ static void loop(struct sched_data *sched_data, int nr_threads)
while (!shutdown) {
for (i = 0; i < nr_threads; i++)
- print_stat(stdout, &sched_data[i], i, 0, 0);
+ print_stat(stdout, &sched_data[i], i, 0, quiet);
usleep(10000);
- printf("\033[%dA", nr_threads);
+ if (!quiet)
+ printf("\033[%dA", nr_threads);
}
usleep(10000);
- for (i = 0; i < nr_threads; i++)
- printf("\n");
+ if (!quiet) {
+ printf("\033[%dB", nr_threads + 2);
+ } else {
+ for (i = 0; i < nr_threads; ++i)
+ print_stat(stdout, &sched_data[i], i, 0, 0);
+ }
}
int main(int argc, char **argv)
@@ -1006,9 +1014,10 @@ int main(int argc, char **argv)
{ "help", no_argument, NULL, 'h' },
{ "interval", required_argument, NULL, 'i' },
{ "threads", required_argument, NULL, 't' },
+ { "quiet", no_argument, NULL, 'q' },
{ NULL, 0, NULL, 0 },
};
- c = getopt_long(argc, argv, "a::c:D:hi:t:", options, NULL);
+ c = getopt_long(argc, argv, "a::c:D:hi:t:q", options, NULL);
if (c == -1)
break;
switch (c) {
@@ -1035,6 +1044,9 @@ int main(int argc, char **argv)
case 'D':
duration = parse_time_string(optarg);
break;
+ case 'q':
+ quiet = 1;
+ break;
case 'h':
usage(0);
break;
--
2.29.2
