kselftests: timers: leap-a-day: Change default arguments to help test runs

BugLink: http://bugs.launchpad.net/bugs/1717549
commit 98b74e1f31045a63f6148b2d129ca9bf244e24ab upstream.

Change default arguments for leap-a-day to always set the time
each iteration (rather then waiting for midnight UTC), and to
only run 10 interations (rather then infinite).

If one wants to wait for midnight UTC, they can use the new -w
flag, and we add a note to the argument help that -i -1 will
run infinitely.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Miroslav Lichvar <mlichvar@redhat.com>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Stephen Boyd <stephen.boyd@linaro.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: linux-kselftest@vger.kernel.org
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>

diff --git a/tools/testing/selftests/timers/leap-a-day.c b/tools/testing/selftests/timers/leap-a-day.c
index fb46ad6ac92cadc71254c68c80953eeae51b218b..0670176340572ff4f561087a7c096ba5336122e9 100644 (file)
--- a/tools/testing/selftests/timers/leap-a-day.c
+++ b/tools/testing/selftests/timers/leap-a-day.c
@@ -190,18 +190,18 @@ int main(int argc, char **argv)
        struct sigevent se;
        struct sigaction act;
        int signum = SIGRTMAX;
-       int settime = 0;
+       int settime = 1;
        int tai_time = 0;
        int insert = 1;
-       int iterations = -1;
+       int iterations = 10;
        int opt;
 
        /* Process arguments */
        while ((opt = getopt(argc, argv, "sti:")) != -1) {
                switch (opt) {
-               case 's':
-                       printf("Setting time to speed up testing\n");
-                       settime = 1;
+               case 'w':
+                       printf("Only setting leap-flag, not changing time. It could take up to a day for leap to trigger.\n");
+                       settime = 0;
                        break;
                case 'i':
                        iterations = atoi(optarg);
@@ -210,9 +210,10 @@ int main(int argc, char **argv)
                        tai_time = 1;
                        break;
                default:
-                       printf("Usage: %s [-s] [-i <iterations>]\n", argv[0]);
-                       printf("        -s: Set time to right before leap second each iteration\n");
-                       printf("        -i: Number of iterations\n");
+                       printf("Usage: %s [-w] [-i <iterations>]\n", argv[0]);
+                       printf("        -w: Set flag and wait for leap second each iteration");
+                       printf("            (default sets time to right before leapsecond)\n");
+                       printf("        -i: Number of iterations (-1 = infinite, default is 10)\n");
                        printf("        -t: Print TAI time\n");
                        exit(-1);
                }