path: root/Documentation/watchdog
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authorWim Van Sebroeck <wim@iguana.be>2006-05-21 12:48:44 +0200
committerWim Van Sebroeck <wim@iguana.be>2006-06-20 19:00:30 +0200
commit58b519f3e5e491d5a3e320dc525f58ac439bdde4 (patch)
treeefff3a0bd308effbbedce1a50fbb40d71e5b5d96 /Documentation/watchdog
parente05b59fe7927bc648ac3af3d59dc64a7ee6b22e2 (diff)
Some watchdog drivers have the ability to report the remaining time before the system will reboot. With the WDIOC_GETTIMELEFT ioctl you can now read the time left before the watchdog would reboot your system. The following drivers support this new IOCTL: i8xx_tco.c, pcwd_pci.c and pcwd_usb.c . Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Signed-off-by: Andrew Morton <akpm@osdl.org>
Diffstat (limited to 'Documentation/watchdog')
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/watchdog/watchdog-api.txt b/Documentation/watchdog/watchdog-api.txt
index 7dc2c1c6f77..d738ec25eaa 100644
--- a/Documentation/watchdog/watchdog-api.txt
+++ b/Documentation/watchdog/watchdog-api.txt
@@ -134,6 +134,15 @@ There is also a get function for getting the pretimeout:
Not all watchdog drivers will support a pretimeout.
+Get the number of seconds before reboot:
+Some watchdog drivers have the ability to report the remaining time
+before the system will reboot. The WDIOC_GETTIMELEFT is the ioctl
+that returns the number of seconds before reboot.
+ ioctl(fd, WDIOC_GETTIMELEFT, &timeleft);
+ printf("The timeout was is %d seconds\n", timeleft);
Environmental monitoring:
All watchdog drivers are required return more information about the system,