1 #ifndef _SPARC64_PIL_H 2 #define _SPARC64_PIL_H 3 4 /* To avoid some locking problems, we hard allocate certain PILs 5 * for SMP cross call messages that must do a etrap/rtrap. 6 * 7 * A local_irq_disable() does not block the cross call delivery, so 8 * when SMP locking is an issue we reschedule the event into a PIL 9 * interrupt which is blocked by local_irq_disable(). 10 * 11 * In fact any XCALL which has to etrap/rtrap has a problem because 12 * it is difficult to prevent rtrap from running BH's, and that would 13 * need to be done if the XCALL arrived while %pil==15. 14 */ 15 #define PIL_SMP_CALL_FUNC 1 16 #define PIL_SMP_RECEIVE_SIGNAL 2 17 #define PIL_SMP_CAPTURE 3 18 #define PIL_SMP_CTX_NEW_VERSION 4 19 #define PIL_DEVICE_IRQ 5 20 #define PIL_SMP_CALL_FUNC_SNGL 6 21 22 #endif /* !(_SPARC64_PIL_H) */ 23