projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 0a7de745 A |
1 | /* |
| 2 | * Copyright (c) 2019 Apple Inc. All rights reserved. | |
| 3 | * | |
| 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ | |
| 5 | * | |
| 6 | * This file contains Original Code and/or Modifications of Original Code | |
| 7 | * as defined in and that are subject to the Apple Public Source License | |
| 8 | * Version 2.0 (the 'License'). You may not use this file except in | |
| 9 | * compliance with the License. The rights granted to you under the License | |
| 10 | * may not be used to create, or enable the creation or redistribution of, | |
| 11 | * unlawful or unlicensed copies of an Apple operating system, or to | |
| 12 | * circumvent, violate, or enable the circumvention or violation of, any | |
| 13 | * terms of an Apple operating system software license agreement. | |
| 14 | * | |
| 15 | * Please obtain a copy of the License at | |
| 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. | |
| 17 | * | |
| 18 | * The Original Code and all software distributed under the License are | |
| 19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| 20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | |
| 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. | |
| 23 | * Please see the License for the specific language governing rights and | |
| 24 | * limitations under the License. | |
| 25 | * | |
| 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ | |
| 27 | */ | |
| 28 | ||
| 29 | #ifndef _KERN_SCHED_URGENCY_H_ | |
| 30 | #define _KERN_SCHED_URGENCY_H_ | |
| 31 | ||
| 32 | #ifdef MACH_KERNEL_PRIVATE | |
| 33 | ||
| 34 | #include <kern/kern_types.h> | |
| 35 | ||
| 36 | typedef enum thread_urgency { | |
| 37 | THREAD_URGENCY_NONE = 0, /* processor is idle */ | |
| 38 | THREAD_URGENCY_BACKGROUND = 1, /* "background" thread (i.e. min-power) */ | |
| 39 | THREAD_URGENCY_NORMAL = 2, /* "normal" thread */ | |
| 40 | THREAD_URGENCY_REAL_TIME = 3, /* "real-time" or urgent thread */ | |
| 41 | THREAD_URGENCY_LOWPRI = 4, /* low priority but not "background" hint for performance management subsystem */ | |
| 42 | THREAD_URGENCY_MAX = 5, /* Max */ | |
| 43 | } thread_urgency_t; | |
| 44 | ||
| 45 | /* Returns the "urgency" of a thread (provided by scheduler) */ | |
| 46 | extern thread_urgency_t thread_get_urgency( | |
| 47 | thread_t thread, | |
| 48 | uint64_t *rt_period, | |
| 49 | uint64_t *rt_deadline); | |
| 50 | ||
| 51 | /* Tells the "urgency" of the just scheduled thread (provided by CPU PM) */ | |
| 52 | extern void thread_tell_urgency( | |
| 53 | thread_urgency_t urgency, | |
| 54 | uint64_t rt_period, | |
| 55 | uint64_t rt_deadline, | |
| 56 | uint64_t sched_latency, | |
| 57 | thread_t nthread); | |
| 58 | ||
| 59 | #endif /* MACH_KERNEL_PRIVATE */ | |
| 60 | ||
| 61 | __END_DECLS | |
| 62 | ||
| 63 | #endif /* _KERN_SCHED_URGENCY_H_ */ |