Linux Watchdog Timer Support

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Using the Watchdog Timer in Linux — Christian's Blog

    https://www.jann.cc/2013/02/02/linux_watchdog.html
    The watchdog timer is initially disabled and set to count 4,294,967,295 milliseconds before generating a watchdog reset. The watchdog timer does not run when the chip is in its powered-down state. Therefore, there is no master/shadow register pairing for the watchdog timer, and it must be reprogrammed after cycling power or resetting the block.

Linux Watchdog Support — The Linux Kernel documentation

    https://www.kernel.org/doc/html/latest/watchdog/index.html
    Linux Watchdog Support. HPE iLO NMI Watchdog Driver; Mellanox watchdog drivers; Berkshire Products PC Watchdog Card; The Linux Watchdog driver API; The Linux WatchDog Timer Driver Core kernel API; WatchDog Module Parameters; The Linux WatchDog Timer Power Management Guide; WDT Watchdog Timer Interfaces For The Linux Operating System

Linux Kernel Watchdog Explained – Linux Hint

    https://linuxhint.com/linux-kernel-watchdog-explained/
    Linux Kernel Watchdog. The Linux kernel watchdog is used to monitor if a system is running. It is supposed to automatically reboot hanged systems due to unrecoverable software errors. The watchdog module is specific to the hardware or chip being used. Personal computer users don’t need watchdog as they can reset the system manually.

arm - How to change the watchdog timer in linux embedded ...

    https://stackoverflow.com/questions/24402865/how-to-change-the-watchdog-timer-in-linux-embedded
    Some watchdog devices don't support modifying the timeout. The kernel will try to extend it in these cases by kicking in a timer interrupt. But this case is a little different as ISR lockups will have a smaller threshold than processes. The main point being, timeout is an overloaded concept.Often different sub-systems have different latency requirements.

How to load the correct watchdog kernel module Support ...

    https://www.suse.com/support/kb/doc/?id=7016880
    How to load the correct watchdog kernel module. This document ... Please note, that only one software must access the watchdog timer. Some hardware vendors ship systems management software that use the watchdog for system resets. ... Community packages for SUSE Linux Enterprise Server. Support Forums Technical Support Handbook. Services SUSE ...

linux kernel - How enable watchdog? - Unix & Linux Stack ...

    https://unix.stackexchange.com/questions/88527/how-enable-watchdog
    I'm struggling with the watchdog timer (wdt) for a while. I can't get it working. My microcontroller is a AriaG25, based on the AT91SAM925. I have used this tutorial to compile the kernel. The kernel settings related to the wdt looks like this:

Watchdog timer and linux on PE1850 - Dell Community

    https://www.dell.com/community/PowerEdge-OS-Forum/Watchdog-timer-and-linux-on-PE1850/td-p/1491794
    Re: Watchdog timer and linux on PE1850 Thanks for the reply and the link on the RHEL site. In the section on Configuring a Hardware Watchdog Time D.1.2.3, it mentions it's hard to tell if a system has a hardware timer and I was wondering if the Dell PE1850 does, and if so, what value for the alias command I should use for it would be.

Using Systemd for Automated System Recovery Dell US

    https://www.dell.com/support/article/us/en/04/sln312339/using-systemd-for-automated-system-recovery
    With the inclusion of support for watchdog hardware, systemd can now perform the function of a watchdog daemon Linux. On Dell PowerEdge systems, this hardware could either be the chipset watchdog timer built into the platform’s chipset (like Intel ICH9) or …

4.5. Configuring a Watchdog Red Hat Virtualization 4.1 ...

    https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.1/html/virtual_machine_management_guide/sect-configuring_a_watchdog
    The Red Hat Customer Portal delivers the knowledge, ... Red Hat Enterprise Linux 7: # systemctl start watchdog.service # systemctl enable watchdog.service. 4.5.3. ... The watchdog timer can no longer be reset, so the watchdog counter reaches zero after a short period of time.

watchdog: a software watchdog daemon - Linux Man Pages (8)

    https://www.systutorials.com/docs/linux/man/8-watchdog/
    Under these circumstances the Linux kernel will reset the machine. To make sure you won't get unnecessary reboots make sure you have the variable realtime set to yes in the configuration file watchdog.conf. This adds real time support to watchdog: it will lock itself into memory and there should be no problem even under the highest of loads.



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