| | 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 */ |
projects / apple / xnu.git / blame_incremental