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==PIL_NORMAL_MAX. 14 * 15 * Finally, in order to handle profiling events even when a 16 * local_irq_disable() is in progress, we only disable up to level 14 17 * interrupts. Profile counter overflow interrupts arrive at level 18 * 15. 19 */ 20#define PIL_SMP_CALL_FUNC 1 21#define PIL_SMP_RECEIVE_SIGNAL 2 22#define PIL_SMP_CAPTURE 3 23#define PIL_SMP_CTX_NEW_VERSION 4 24#define PIL_DEVICE_IRQ 5 25#define PIL_SMP_CALL_FUNC_SNGL 6 26#define PIL_DEFERRED_PCR_WORK 7 27#define PIL_KGDB_CAPTURE 8 28#define PIL_NORMAL_MAX 14 29#define PIL_NMI 15 30 31#endif /* !(_SPARC64_PIL_H) */ 32