On 2024-01-17, Sreenath Vijayan <sreenath.vijayan@xxxxxxxx> wrote: > When terminal is unresponsive, one cannot use dmesg to view printk > ring buffer messages. Also, syslog services may be disabled, > to check the messages after a reboot, especially on embedded systems. > In this scenario, dump the printk ring buffer messages via sysrq > by pressing sysrq+D. Note that using sysrq+g with kgdb or kdb it is already possible to dump the printk ringbuffer messages. However using this new sysrq+D is much more comfortable, less intrusive, and generally safer. I have no problems with this change. But I guess the tty maintainers will need to speak up about extending the sysrq list. John
