On 2024-02-01, Sreenath Vijayan <sreenath.vijayan@xxxxxxxx> wrote: > It is useful to be able to dump the printk buffer directly to > consoles in some situations so as to not flood the buffer. > To do this, we reuse the CONSOLE_REPLAY_ALL mode code in > console_flush_on_panic() by moving the code to a helper function > console_rewind_all(). This is done because console_flush_on_panic() > sets console_may_schedule to 0 but this should not be done in our > case. Then console_rewind_all() is called from the new function > dump_printk_buffer() with console lock held to set the console > sequence number to oldest record in the buffer for all consoles. > Releasing the console lock will flush the contents of printk buffer > to the consoles. > > Suggested-by: John Ogness <john.ogness@xxxxxxxxxxxxx> > Signed-off-by: Sreenath Vijayan <sreenath.vijayan@xxxxxxxx> > Signed-off-by: Shimoyashiki Taichi <taichi.shimoyashiki@xxxxxxxx> Reviewed-by: John Ogness <john.ogness@xxxxxxxxxxxxx>
