Re: [PATCH v6 2/2] tty/sysrq: Replay kernel log messages on consoles via sysrq

[Petr Mladek]

On Wed 2024-03-13 15:52:52, Sreenath Vijayan wrote:
> When terminal is unresponsive, one cannot use dmesg to view
> the printk ring buffer messages. Also, syslog services may be
> disabled, especially on embedded systems, to check the messages
> after a reboot. In this scenario, replay the messages in printk
> ring buffer on consoles via sysrq by pressing sysrq+R.
> 
> The console loglevel will determine which all kernel log messages
> are displayed. The messages will be displayed only when
> console_trylock() succeeds. Users could repeat the sysrq key when
> it fails. If the owner of console subsystem lock is stuck,
> repeating the key won't work.
> 
> Suggested-by: Petr Mladek <pmladek@xxxxxxxx>
> Signed-off-by: Shimoyashiki Taichi <taichi.shimoyashiki@xxxxxxxx>
> Reviewed-by: John Ogness <john.ogness@xxxxxxxxxxxxx>
> Signed-off-by: Sreenath Vijayan <sreenath.vijayan@xxxxxxxx>

Reviewed-by: Petr Mladek <pmladek@xxxxxxxx>

Best Regards,
Petr