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_cabstime; |
45 | uint64_t wk_sv_compressions; |
46 | uint64_t wk_mzv_compressions; |
47 | uint64_t wk_compression_failures; |
48 | uint64_t wk_compressed_bytes_total; |
49 | uint64_t wk_compressions_exclusive; |
50 | uint64_t wk_compressed_bytes_exclusive; |
51 | |
52 | uint64_t wkh_compressions; |
53 | uint64_t wkh_cabstime; |
54 | uint64_t wks_compressions; |
55 | uint64_t wks_cabstime; |
56 | uint64_t wks_compressed_bytes; |
57 | uint64_t wks_compression_failures; |
58 | uint64_t wks_sv_compressions; |
59 | |
60 | uint64_t lz4_decompressions; |
61 | uint64_t lz4_decompressed_bytes; |
62 | uint64_t uc_decompressions; |
63 | |
64 | uint64_t wk_decompressions; |
65 | uint64_t wk_dabstime; |
66 | |
67 | uint64_t wkh_decompressions; |
68 | uint64_t wkh_dabstime; |
69 | |
70 | uint64_t wks_decompressions; |
71 | uint64_t wks_dabstime; |
72 | |
73 | uint64_t wk_decompressed_bytes; |
74 | uint64_t wk_sv_decompressions; |
75 | } compressor_stats_t; |
76 | |
77 | extern compressor_stats_t compressor_stats; |
78 | |
79 | typedef struct { |
80 | uint32_t lz4_selection_max; |
81 | int32_t wkdm_reeval_threshold; |
82 | int32_t lz4_threshold; |
83 | uint32_t lz4_max_failure_skips; |
84 | uint32_t lz4_max_failure_run_length; |
85 | uint32_t lz4_max_preselects; |
86 | uint32_t lz4_run_preselection_threshold; |
87 | uint32_t lz4_run_continue_bytes; |
88 | uint32_t lz4_profitable_bytes; |
89 | } compressor_tuneables_t; |
90 | |
91 | extern compressor_tuneables_t vmctune; |
92 | |
93 | int metacompressor(const uint8_t *in, uint8_t *cdst, int32_t outbufsz, |
94 | uint16_t *codec, void *cscratch, boolean_t *, uint32_t *pop_count_p); |
95 | bool metadecompressor(const uint8_t *source, uint8_t *dest, uint32_t csize, |
96 | uint16_t ccodec, void *compressor_dscratch, uint32_t *pop_count_p); |
97 | |
98 | typedef enum { |
99 | CCWK = 0, // must be 0 or 1 |
100 | CCLZ4 = 1, //must be 0 or 1 |
101 | CINVALID = 0xFFFF |
102 | } vm_compressor_codec_t; |
103 | |
104 | typedef enum { |
105 | CMODE_WK = 0, |
106 | CMODE_LZ4 = 1, |
107 | CMODE_HYB = 2, |
108 | VM_COMPRESSOR_DEFAULT_CODEC = 3, |
109 | CMODE_INVALID = 4 |
110 | } vm_compressor_mode_t; |
111 | |
112 | void vm_compressor_algorithm_init(void); |
113 | int vm_compressor_algorithm(void); |
114 | #endif /* XNU_KERNEL_PRIVATE */ |
115 | |