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/* SPDX-License-Identifier: GPL-2.0 */ #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_DEVICE_IRQ 5 #define PIL_SMP_CALL_FUNC_SNGL 6 #define PIL_DEFERRED_PCR_WORK 7 #define PIL_KGDB_CAPTURE 8 #define PIL_NORMAL_MAX 14 #define PIL_NMI 15 #endif /* !(_SPARC64_PIL_H) */