projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 39037602 A |
1 | /* |
| 2 | * Copyright (c) 2000-2016 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 | #pragma once | |
| 30 | ||
| 31 | #if XNU_KERNEL_PRIVATE | |
| 32 | //DRKTODO: the decompression side stats should be either made optional or | |
| 33 | //per-CPU to avoid cacheline contention | |
| 34 | ||
| 35 | typedef struct { | |
| 36 | uint64_t lz4_compressions; | |
| 37 | uint64_t lz4_compression_failures; | |
| 38 | uint64_t lz4_compressed_bytes; | |
| 39 | uint64_t lz4_wk_compression_delta; | |
| 40 | uint64_t lz4_wk_compression_negative_delta; | |
| 41 | uint64_t lz4_post_wk_compressions; | |
| 42 | ||
| 43 | uint64_t wk_compressions; | |
| 44 | uint64_t wk_sv_compressions; | |
| 45 | uint64_t wk_mzv_compressions; | |
| 46 | uint64_t wk_compression_failures; | |
| 47 | uint64_t wk_compressed_bytes_total; | |
| 48 | uint64_t wk_compressions_exclusive; | |
| 49 | uint64_t wk_compressed_bytes_exclusive; | |
| 50 | ||
| 51 | uint64_t lz4_decompressions; | |
| 52 | uint64_t lz4_decompressed_bytes; | |
| 53 | uint64_t uc_decompressions; | |
| 54 | ||
| 55 | uint64_t wk_decompressions; | |
| 56 | uint64_t wk_decompressed_bytes; | |
| 57 | uint64_t wk_sv_decompressions; | |
| 58 | } compressor_stats_t; | |
| 59 | ||
| 60 | extern compressor_stats_t compressor_stats; | |
| 61 | ||
| 62 | typedef struct { | |
| 63 | uint32_t lz4_selection_max; | |
| 64 | int32_t wkdm_reeval_threshold; | |
| 65 | int32_t lz4_threshold; | |
| 66 | uint32_t lz4_max_failure_skips; | |
| 67 | uint32_t lz4_max_failure_run_length; | |
| 68 | uint32_t lz4_max_preselects; | |
| 69 | uint32_t lz4_run_preselection_threshold; | |
| 70 | uint32_t lz4_run_continue_bytes; | |
| 71 | uint32_t lz4_profitable_bytes; | |
| 72 | } compressor_tuneables_t; | |
| 73 | ||
| 74 | extern compressor_tuneables_t vmctune; | |
| 75 | ||
| 76 | int metacompressor(const uint8_t *in, uint8_t *cdst, int32_t outbufsz, uint16_t *codec, void *cscratch); | |
| 77 | void metadecompressor(const uint8_t *source, uint8_t *dest, uint32_t csize, uint16_t ccodec, void *compressor_dscratch); | |
| 78 | ||
| 79 | typedef enum { | |
| 80 | CCWK = 0, // must be 0 or 1 | |
| 81 | CCLZ4 = 1, //must be 0 or 1 | |
| 82 | CINVALID = 0xFFFF | |
| 83 | } vm_compressor_codec_t; | |
| 84 | ||
| 85 | typedef enum { | |
| 86 | CMODE_WK = 0, | |
| 87 | CMODE_LZ4 = 1, | |
| 88 | CMODE_HYB = 2, | |
| 89 | VM_COMPRESSOR_DEFAULT_CODEC = 3, | |
| 90 | CMODE_INVALID = 4 | |
| 91 | } vm_compressor_mode_t; | |
| 92 | ||
| 93 | void vm_compressor_algorithm_init(void); | |
| 94 | int vm_compressor_algorithm(void); | |
| 95 | #endif /* XNU_KERNEL_PRIVATE */ |