| #ifndef _SPARC64_PIL_H |
| #define _SPARC64_PIL_H |
| |
| /* To avoid some locking problems, we hard allocate certain PILs |
| * for SMP cross call messages that must do a etrap/rtrap. |
| * |
| * A local_irq_disable() does not block the cross call delivery, so |
| * when SMP locking is an issue we reschedule the event into a PIL |
| * interrupt which is blocked by local_irq_disable(). |
| * |
| * In fact any XCALL which has to etrap/rtrap has a problem because |
| * it is difficult to prevent rtrap from running BH's, and that would |
| * need to be done if the XCALL arrived while %pil==PIL_NORMAL_MAX. |
| * |
| * Finally, in order to handle profiling events even when a |
| * local_irq_disable() is in progress, we only disable up to level 14 |
| * interrupts. Profile counter overflow interrupts arrive at level |
| * 15. |
| */ |
| #define PIL_SMP_CALL_FUNC 1 |
| #define PIL_SMP_RECEIVE_SIGNAL 2 |
| #define PIL_SMP_CAPTURE 3 |
| #define PIL_SMP_CTX_NEW_VERSION 4 |
| #define PIL_DEVICE_IRQ 5 |
| #define PIL_SMP_CALL_FUNC_SNGL 6 |
| #define PIL_DEFERRED_PCR_WORK 7 |
| #define PIL_NORMAL_MAX 14 |
| #define PIL_NMI 15 |
| |
| #endif /* !(_SPARC64_PIL_H) */ |
