Re: [PATCH v10] /proc/sysrq-trigger: accept multiple keys at once

From: Jiri Slaby
Date: Mon Nov 20 2023 - 06:32:49 EST


On 20. 11. 23, 12:14, Tomas Mudrunka wrote:
This way we can do:
`echo _reisub > /proc/sysrq-trigger`
Instead of:
`for i in r e i s u b; do echo "$i" > /proc/sysrq-trigger; done;`

This can be very useful when trying to execute sysrq combo remotely
or from userspace. When sending keys in multiple separate writes,
userspace (eg. bash or ssh) can be killed before whole combo is completed.
Therefore putting all keys in single write is more robust approach.

Signed-off-by: Tomas Mudrunka <tomas.mudrunka@xxxxxxxxx>

Reviewed-by: Jiri Slaby <jirislaby@xxxxxxxxxx>

thanks,
--
js
suse labs