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author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/Documentation/watchdog/pcwd-watchdog.txt | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/Documentation/watchdog/pcwd-watchdog.txt')
-rw-r--r-- | kernel/Documentation/watchdog/pcwd-watchdog.txt | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/kernel/Documentation/watchdog/pcwd-watchdog.txt b/kernel/Documentation/watchdog/pcwd-watchdog.txt new file mode 100644 index 000000000..4f6805239 --- /dev/null +++ b/kernel/Documentation/watchdog/pcwd-watchdog.txt @@ -0,0 +1,66 @@ +Last reviewed: 10/05/2007 + + Berkshire Products PC Watchdog Card + Support for ISA Cards Revision A and C + Documentation and Driver by Ken Hollis <kenji@bitgate.com> + + The PC Watchdog is a card that offers the same type of functionality that + the WDT card does, only it doesn't require an IRQ to run. Furthermore, + the Revision C card allows you to monitor any IO Port to automatically + trigger the card into being reset. This way you can make the card + monitor hard drive status, or anything else you need. + + The Watchdog Driver has one basic role: to talk to the card and send + signals to it so it doesn't reset your computer ... at least during + normal operation. + + The Watchdog Driver will automatically find your watchdog card, and will + attach a running driver for use with that card. After the watchdog + drivers have initialized, you can then talk to the card using a PC + Watchdog program. + + I suggest putting a "watchdog -d" before the beginning of an fsck, and + a "watchdog -e -t 1" immediately after the end of an fsck. (Remember + to run the program with an "&" to run it in the background!) + + If you want to write a program to be compatible with the PC Watchdog + driver, simply use of modify the watchdog test program: + Documentation/watchdog/src/watchdog-test.c + + + Other IOCTL functions include: + + WDIOC_GETSUPPORT + This returns the support of the card itself. This + returns in structure "PCWDS" which returns: + options = WDIOS_TEMPPANIC + (This card supports temperature) + firmware_version = xxxx + (Firmware version of the card) + + WDIOC_GETSTATUS + This returns the status of the card, with the bits of + WDIOF_* bitwise-anded into the value. (The comments + are in linux/pcwd.h) + + WDIOC_GETBOOTSTATUS + This returns the status of the card that was reported + at bootup. + + WDIOC_GETTEMP + This returns the temperature of the card. (You can also + read /dev/watchdog, which gives a temperature update + every second.) + + WDIOC_SETOPTIONS + This lets you set the options of the card. You can either + enable or disable the card this way. + + WDIOC_KEEPALIVE + This pings the card to tell it not to reset your computer. + + And that's all she wrote! + + -- Ken Hollis + (kenji@bitgate.com) + |