Re: [PATCH v4 2/2] tty/sysrq: Dump printk ring buffer messages via sysrq

[John Ogness]

On 2024-02-14, Sreenath Vijayan <sreenath.vijayan@xxxxxxxx> wrote:
> //in printk.c
> void console_replay_all(void)
> {
>        if (console_trylock()) {
>                __console_rewind_all();
>                console_unlock();
>        }
> }
>
> //in sysrq.c
> static void sysrq_handle_dmesg_dump(u8 key)
> {
>        int orig_log_level = console_loglevel;
>        console_loglevel = CONSOLE_LOGLEVEL_DEFAULT;
>        console_replay_all();
>        console_loglevel = orig_log_level;
> }

Note that there is already a sysrq 0-9 to change the loglevel. That may
be more appropriate.

John