181 	unsigned long pending = 1UL << sig;  in hard_handler()  local
187 		 * pending comes back with one bit set for each  in hard_handler()
196 		bail = to_irq_stack(&pending);  in hard_handler()
200 		nested = pending & 1;  in hard_handler()
201 		pending &= ~1;  in hard_handler()
203 		while ((sig = ffs(pending)) != 0){  in hard_handler()
205 			pending &= ~(1 << sig);  in hard_handler()
210 		 * Again, pending comes back with a mask of signals  in hard_handler()
216 			pending = from_irq_stack(nested);  in hard_handler()
217 	} while (pending);  in hard_handler()
314 		 * We have pending interrupts, so disable signals, as the  in unblock_signals()
319 		 * pending signals will mess up the tracing state.  in unblock_signals()
326 		 * schedule, leaving the pending SIGIO stranded until we come  in unblock_signals()
340 		/* Rerun the loop only if there is still pending SIGIO and not in TIMER handler */  in unblock_signals()
398 	/* Must be set to 0 before we check the pending bits etc. */  in unblock_signals_hard()