193 	unsigned long pending = 1UL << sig;  in hard_handler()  local
199 		 * pending comes back with one bit set for each  in hard_handler()
208 		bail = to_irq_stack(&pending);  in hard_handler()
212 		nested = pending & 1;  in hard_handler()
213 		pending &= ~1;  in hard_handler()
215 		while ((sig = ffs(pending)) != 0){  in hard_handler()
217 			pending &= ~(1 << sig);  in hard_handler()
222 		 * Again, pending comes back with a mask of signals  in hard_handler()
228 			pending = from_irq_stack(nested);  in hard_handler()
229 	} while (pending);  in hard_handler()
326 		 * We have pending interrupts, so disable signals, as the  in unblock_signals()
331 		 * pending signals will mess up the tracing state.  in unblock_signals()
338 		 * schedule, leaving the pending SIGIO stranded until we come  in unblock_signals()
352 		/* Rerun the loop only if there is still pending SIGIO and not in TIMER handler */  in unblock_signals()
403 	 * the only signal ever pending is SIGIO, which  in mark_sigio_pending()
426 	 * Must be set to 0 before we check pending so the  in unblock_signals_hard()
438 	 * pending signals, we can get out of the inner call with the real  in unblock_signals_hard()