kernel/printk/nbcon.c

20  *     console. Only higher priority contexts are allowed to take over the
26  *     taken over by a higher priority context, released, and taken on another
32  *     current owner aware that there is a context with a higher priority
85  *   - Preference for higher priority contexts.
101  * The output of one printk record might be interrupted with a higher priority
251  *			Or the current owner or waiter has the same or higher
298 	 * - Only a context with a higher priority can take over the request.  in nbcon_waiter_matches()
305 	 * 1. Another context with a higher priority directly takes ownership.  in nbcon_waiter_matches()
306 	 * 2. The higher priority context releases the ownership.  in nbcon_waiter_matches()
376 		 * over by a higher priority context.  in nbcon_context_try_acquire_requested()
391  * The function must be called only when the context has higher priority
397  * or an even higher context takes over the request, or timeout expires.
409  *			Or a higher priority context has taken over the
488 		 * can only happen if a higher priority context has taken over  in nbcon_context_try_acquire_handover()
617 	 * Since consoles can only be acquired by higher priorities,  in nbcon_owner_matches()
674  * to eventually free the lock for a higher priority context which asked
683  * a higher priority context took the lock.
711 	/* Waiters always have higher priorities than owners. */  in nbcon_context_can_proceed()
744  * for a higher priority context which asked for the friendly handover.
750  * operation. It does not make sense to do the operation when a higher