ee900888c4
Flip dwwdt_prevent_restart to false. What's the use of a watchdog if it does not restart a hung system? Add a knob for panic-ing on the first timeout, resetting on the second one. This can be useful if interrupts can still work, otherwise a reset recovers a system without any aid for debugging the hang. The change also doubles the timeout that's programmed into the hardware. The previous version of the code always had the interrupt on the first timeout enabled, but it took no action on it. Only the second timeout could be configured to reset the system. So, the hardware timeout was set to a half of the user requested timeout. But now,we can take a corrective action on the first timeout, so we use the user requested timeout. While here, define boolean sysctl-s as such. Reviewed by: manu MFC after: 3 weeks Differential Revision: https://reviews.freebsd.org/D33534 |
||
|---|---|---|
| .. | ||
| dwwdt.c | ||