Le 02/09/2020 à 15:02, Ivan Mikhaylov a écrit :
Hello everyone. Currently, the watchdog interface only has "stop watchdog on restart" but lacks a "start watchdog on restart" one. Is there a way to achieve such functionality? I'd like to know why "stop watchdog on restart" wasn't implemented via ioctl interface? It would be more convenient from user perspective and you can control that behavior whenever you want from application layer. I have some thoughts on this problem that solve the aforementioned issue with "start watchdog on restart" but I don't think that my solution is correct.
I don't understand why a "start watchdog on restart" would be needed. Isn't it the default expected behaviour for a watchdog ?
"stop watchdog on restart" is there to keep things under control during a wanted machine reboot/restart, while still having the watchdog do its job on an unexpected restart.
What would be the advantage of an ioctl() compared to the existing way ? Christophe
