Documentation/watchdog: add timeout and ping rate control to watchdog-test.c

The watchdog test program is much more useful if it can configure the
timeout value and ping rate.  This will allow you to test actual timeouts.

Adds the -t parameter to set the timeout value (in seconds), and -p to set
the ping rate (number of seconds between pings).

Signed-off-by: Timur Tabi <timur@codeaurora.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

diff --git a/Documentation/watchdog/src/watchdog-test.c b/Documentation/watchdog/src/watchdog-test.c
index 3da822967ee0e13d1a2dbcd88d2d75f5a4aca370..fcdde8fc98be3a122ee8eef82c42d828a4de4a7a 100644 (file)
--- a/Documentation/watchdog/src/watchdog-test.c
+++ b/Documentation/watchdog/src/watchdog-test.c
@@ -41,6 +41,7 @@ static void term(int sig)
 int main(int argc, char *argv[])
 {
     int flags;
+    unsigned int ping_rate = 1;
 
     fd = open("/dev/watchdog", O_WRONLY);
 
@@ -63,22 +64,33 @@ int main(int argc, char *argv[])
            fprintf(stderr, "Watchdog card enabled.\n");
            fflush(stderr);
            goto end;
+       } else if (!strncasecmp(argv[1], "-t", 2) && argv[2]) {
+           flags = atoi(argv[2]);
+           ioctl(fd, WDIOC_SETTIMEOUT, &flags);
+           fprintf(stderr, "Watchdog timeout set to %u seconds.\n", flags);
+           fflush(stderr);
+           goto end;
+       } else if (!strncasecmp(argv[1], "-p", 2) && argv[2]) {
+           ping_rate = strtoul(argv[2], NULL, 0);
+           fprintf(stderr, "Watchdog ping rate set to %u seconds.\n", ping_rate);
+           fflush(stderr);
        } else {
-           fprintf(stderr, "-d to disable, -e to enable.\n");
+           fprintf(stderr, "-d to disable, -e to enable, -t <n> to set " \
+               "the timeout,\n-p <n> to set the ping rate, and \n");
            fprintf(stderr, "run by itself to tick the card.\n");
            fflush(stderr);
            goto end;
        }
-    } else {
-       fprintf(stderr, "Watchdog Ticking Away!\n");
-       fflush(stderr);
     }
 
+    fprintf(stderr, "Watchdog Ticking Away!\n");
+    fflush(stderr);
+
     signal(SIGINT, term);
 
     while(1) {
        keep_alive();
-       sleep(1);
+       sleep(ping_rate);
     }
 end:
     close(fd);