projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| b0d623f7 A |
1 | /* |
| 2 | * Copyright (c) 2008 Apple Computer, 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 KPI_KERN_CALLOUT_H | |
| 30 | #define KPI_KERN_CALLOUT_H | |
| 31 | ||
| 32 | #ifdef KERNEL | |
| 33 | ||
| 34 | /* | |
| 35 | * Default sample threshold for validity | |
| 36 | */ | |
| 37 | #define MA_SMA_SAMPLES 10 /* simple moving average */ | |
| 38 | ||
| 39 | /* | |
| 40 | * Flags bits for the ma_flags field | |
| 41 | */ | |
| 42 | #define KCO_MA_F_SMA 0x00000001 /* Simple moving average */ | |
| 43 | #define KCO_MA_F_WMA 0x00000002 /* Weighted moving average */ | |
| 44 | #define KCO_MA_F_NEEDS_INIT 0x80000000 /* Need initialization */ | |
| 45 | ||
| 46 | struct kco_moving_average { | |
| 47 | int ma_flags; /* flags */ | |
| 48 | uint64_t ma_sma; /* simple over MA_SMA_SAMPLES*/ | |
| 49 | uint64_t ma_old_sma; /* previous value */ | |
| 50 | uint64_t ma_sma_samples[MA_SMA_SAMPLES]; /* sample history */ | |
| 51 | int32_t ma_sma_threshold; /* trigger delta (%) */ | |
| 52 | int ma_sma_trigger_count; /* number of time triggered */ | |
| 53 | uint64_t ma_wma; /* weighted */ | |
| 54 | uint64_t ma_old_wma; /* previous value */ | |
| 55 | int ma_wma_weight; /* weighting (< 100) */ | |
| 56 | int32_t ma_wma_threshold; /* trigger delta (%) */ | |
| 57 | int ma_wma_trigger_count; /* number of time triggered */ | |
| 58 | }; | |
| 59 | ||
| 60 | __BEGIN_DECLS | |
| 61 | int kco_ma_addsample(struct kco_moving_average *map, uint64_t sample_time); | |
| 62 | void kco_ma_init(struct kco_moving_average *map, int32_t threshold, int kind); | |
| 63 | int kco_ma_info(struct kco_moving_average *map, int kind, uint64_t *averagep, uint64_t *old_averagep, int32_t *thresholdp, int *countp); | |
| 64 | __END_DECLS | |
| 65 | ||
| 66 | #endif /* KERNEL */ | |
| 67 | ||
| 68 | #endif /* KPI_KERN_CONTROL_H */ |