104  * to poll for packets. This helps schedule the receive side packet
108  * the interrupts and switches to poll mode. In poll mode, when poll
204 /* Wakeup poll thread only if SQS_POLLING is set */
716 	 * work anyway (but signal the poll thread to retrieve some packets  in squeue_drain()
740 			 * SQS_POLL_RING() will not wake up poll thread  in squeue_drain()
752 	 * If the poll thread is already running, just return. The  in squeue_drain()
753 	 * poll thread continues to hold the proc and will finish  in squeue_drain()
765 	 * If we are the worker thread and no work is left, send the poll  in squeue_drain()
773 		 * that poll thread keeps the PROC and can decide  in squeue_drain()
777 		 * If we drop the SQS_PROC here and poll thread comes  in squeue_drain()
780 		 * and started draining. The previously running poll  in squeue_drain()
786 		 * poll thread (if running) and let poll thread finish  in squeue_drain()
797 		 * unsuccessful or poll thread already finished  in squeue_drain()
819  * Quiesce, Restart, or Cleanup of the squeue poll thread.
821  * Quiesce and Restart: After an squeue poll thread has been quiesced, it does
822  * not attempt to poll the underlying soft ring any more. The quiesce is
865  * to worker thread. Occassionally, we send the poll thread (running at
867  * Sending the poll thread down to NIC is dependant on 3 criterions
872  *	Before starting drain again, send the poll thread down if
874  * 3) Before exiting the squeue_drain, if the poll thread is not already
875  *	working and we are the worker thread, try to poll one more time.
891  * poll thread is running so that no other thread can acquire the
893  * left), it leaves the SQS_PROC set if poll thread is running.
897  * This is the squeue poll thread. In poll mode, it polls the underlying
899  * drains the squeue. The poll thread also responds to control signals for
933 			 * request. A quiesced squeue must not poll the  in squeue_polling_thread()
990 			 * is not running.  Check to see if poll thread is  in squeue_polling_thread()
1055 			 * to do anything. Indicate that poll thread is done.  in squeue_polling_thread()
1072  * synchronizes with the squeue poll thread to complete the request and finally
1089 		 * Request the squeue poll thread to restart and wait till  in squeue_worker_thr_control()
1109 		/* The squeue poll thread handed control to us */  in squeue_worker_thr_control()
1120 	/* Signal the squeue poll thread and wait for it to quiesce itself */  in squeue_worker_thr_control()
1194 			 * If the poll thread has handed control to us  in squeue_worker()