On 2024-03-07, Sreenath Vijayan <sreenath.vijayan@xxxxxxxx> wrote: > Add a generic function console_replay_all() for replaying > the kernel log on consoles, in any context. It would allow > viewing the logs on an unresponsive terminal via sysrq. > > Reuse the existing code from console_flush_on_panic() for > resetting the sequence numbers, by introducing a new helper > function __console_rewind_all(). It is safe to be called > under console_lock(). > > Try to acquire lock on the console subsystem without waiting. > If successful, reset the sequence number to oldest available > record on all consoles and call console_unlock() which will > automatically flush the messages to the consoles. > > Suggested-by: John Ogness <john.ogness@xxxxxxxxxxxxx> > Suggested-by: Petr Mladek <pmladek@xxxxxxxx> > Signed-off-by: Sreenath Vijayan <sreenath.vijayan@xxxxxxxx> > Signed-off-by: Shimoyashiki Taichi <taichi.shimoyashiki@xxxxxxxx> Reviewed-by: John Ogness <john.ogness@xxxxxxxxxxxxx>
