kernel/printk/nbcon.c

34  *     console. Only higher priority contexts are allowed to take over the
40  *     taken over by a higher priority context, released, and taken on another
46  *     current owner aware that there is a context with a higher priority
99  *   - Preference for higher priority contexts.
115  * The output of one printk record might be interrupted with a higher priority
229  *			Or the current owner or waiter has the same or higher
283 	 * - Only a context with a priority higher than the owner can become  in nbcon_waiter_matches()
285 	 * - Only a context with a priority higher than the waiter can  in nbcon_waiter_matches()
294 	 * 2. Another context with a higher priority than this context  in nbcon_waiter_matches()
296 	 * 3. The higher priority context releases the ownership.  in nbcon_waiter_matches()
372 		 * over by a higher priority context.  in nbcon_context_try_acquire_requested()
387  * The function must be called only when the context has higher priority
393  * or an even higher context takes over the request, or timeout expires.
405  *			Or a higher priority context has taken over the
484 		 * can only happen if a higher priority context has taken over  in nbcon_context_try_acquire_handover()
688  * to eventually free the lock for a higher priority context which asked
697  * a higher priority context took the lock.
725 	/* Waiters always have higher priorities than owners. */  in nbcon_context_can_proceed()
758  * for a higher priority context which asked for the friendly handover.
764  * operation. It does not make sense to do the operation when a higher
1112 	 * The higher priority printing context takes over responsibility  in nbcon_emit_one()