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1 | /* | |
2 | * Copyright (c) 2013 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 | /* | |
30 | * Sample KPC data into kperf and manage shared context-switch and AST handlers | |
31 | */ | |
32 | ||
33 | #include <kperf/kperf.h> | |
34 | #include <kperf/buffer.h> | |
35 | #include <kperf/context.h> | |
36 | #include <kperf/pet.h> | |
37 | #include <kperf/kperf_kpc.h> | |
38 | #include <kern/kpc.h> /* kpc_cswitch_context, kpc_threads_counting */ | |
39 | ||
40 | void | |
41 | kperf_kpc_thread_ast(thread_t thread) | |
42 | { | |
43 | kpc_thread_ast_handler(thread); | |
44 | kperf_thread_ast_handler(thread); | |
45 | thread->kperf_ast = 0; | |
46 | } | |
47 | ||
48 | void | |
49 | kperf_kpc_thread_sample(struct kpcdata *kpcd, int sample_config) | |
50 | { | |
51 | BUF_INFO(PERF_KPC_THREAD_SAMPLE | DBG_FUNC_START, sample_config); | |
52 | ||
53 | kpcd->running = kpc_get_running(); | |
54 | /* let kpc_get_curthread_counters set the correct count */ | |
55 | kpcd->counterc = KPC_MAX_COUNTERS; | |
56 | if (kpc_get_curthread_counters(&kpcd->counterc, | |
57 | kpcd->counterv)) { | |
58 | /* if thread counters aren't ready, default to 0 */ | |
59 | memset(kpcd->counterv, 0, | |
60 | sizeof(uint64_t) * kpcd->counterc); | |
61 | } | |
62 | /* help out Instruments by sampling KPC's config */ | |
63 | if (!sample_config) { | |
64 | kpcd->configc = 0; | |
65 | } else { | |
66 | kpcd->configc = kpc_get_config_count(kpcd->running); | |
67 | kpc_get_config(kpcd->running, kpcd->configv); | |
68 | } | |
69 | ||
70 | BUF_INFO(PERF_KPC_THREAD_SAMPLE | DBG_FUNC_END, kpcd->running, kpcd->counterc); | |
71 | } | |
72 | ||
73 | void | |
74 | kperf_kpc_cpu_sample(struct kpcdata *kpcd, int sample_config) | |
75 | { | |
76 | BUF_INFO(PERF_KPC_CPU_SAMPLE | DBG_FUNC_START, sample_config); | |
77 | ||
78 | kpcd->running = kpc_get_running(); | |
79 | kpcd->counterc = kpc_get_cpu_counters(0, kpcd->running, | |
80 | &kpcd->curcpu, | |
81 | kpcd->counterv); | |
82 | if (!sample_config) { | |
83 | kpcd->configc = 0; | |
84 | } else { | |
85 | kpcd->configc = kpc_get_config_count(kpcd->running); | |
86 | kpc_get_config(kpcd->running, kpcd->configv); | |
87 | } | |
88 | ||
89 | BUF_INFO(PERF_KPC_CPU_SAMPLE | DBG_FUNC_END, kpcd->running, kpcd->counterc); | |
90 | } | |
91 | ||
92 | void | |
93 | kperf_kpc_config_log(const struct kpcdata *kpcd) | |
94 | { | |
95 | BUF_DATA(PERF_KPC_CONFIG, | |
96 | kpcd->running, | |
97 | kpcd->counterc, | |
98 | kpc_get_counter_count(KPC_CLASS_FIXED_MASK), | |
99 | kpcd->configc); | |
100 | ||
101 | #if __LP64__ | |
102 | unsigned int max = (kpcd->configc + 3) / 4; | |
103 | for (unsigned int i = 0; i < max; i++) { | |
104 | uint32_t flag = (i == 0) ? DBG_FUNC_START : ((i == (max - 1)) ? DBG_FUNC_END : DBG_FUNC_NONE); | |
105 | BUF_DATA(PERF_KPC_CFG_REG | flag, | |
106 | kpcd->configv[0 + i * 4], kpcd->configv[1 + i * 4], | |
107 | kpcd->configv[2 + i * 4], kpcd->configv[3 + i * 4]); | |
108 | } | |
109 | #else /* __LP64__ */ | |
110 | unsigned int max = (kpcd->configc + 1) / 2; | |
111 | for (unsigned int i = 0; i < max; i++) { | |
112 | uint32_t flag = (i == 0) ? DBG_FUNC_START : ((i == (max - 1)) ? DBG_FUNC_END : DBG_FUNC_NONE); | |
113 | BUF_DATA(PERF_KPC_CFG_REG32 | flag, | |
114 | kpcd->configv[i * 2] >> 32ULL, | |
115 | kpcd->configv[i * 2] & 0xffffffffULL, | |
116 | kpcd->configv[i * 2 + 1] >> 32ULL, | |
117 | kpcd->configv[i * 2 + 1] & 0xffffffffULL); | |
118 | } | |
119 | #endif /* !__LP64__ */ | |
120 | } | |
121 | ||
122 | static void | |
123 | kperf_kpc_log(uint32_t code, uint32_t code32, const struct kpcdata *kpcd) | |
124 | { | |
125 | #if __LP64__ | |
126 | #pragma unused(code32) | |
127 | unsigned int max = (kpcd->counterc + 3) / 4; | |
128 | /* and the actual counts with one 64-bit argument each */ | |
129 | for (unsigned int i = 0; i < max; i++) { | |
130 | uint32_t flag = (i == 0) ? DBG_FUNC_START : ((i == (max - 1)) ? DBG_FUNC_END : DBG_FUNC_NONE); | |
131 | BUF_DATA(code | flag, | |
132 | kpcd->counterv[0 + i * 4], | |
133 | kpcd->counterv[1 + i * 4], | |
134 | kpcd->counterv[2 + i * 4], | |
135 | kpcd->counterv[3 + i * 4]); | |
136 | } | |
137 | #else /* __LP64__ */ | |
138 | #pragma unused(code) | |
139 | unsigned int max = (kpcd->counterc + 1) / 2; | |
140 | /* and the actual counts with two 32-bit trace arguments each */ | |
141 | for (unsigned int i = 0; i < max; i++) { | |
142 | uint32_t flag = (i == 0) ? DBG_FUNC_START : ((i == (max - 1)) ? DBG_FUNC_END : DBG_FUNC_NONE); | |
143 | BUF_DATA(code32 | flag, | |
144 | (kpcd->counterv[0 + i * 2] >> 32ULL), | |
145 | kpcd->counterv[0 + i * 2] & 0xffffffffULL, | |
146 | (kpcd->counterv[1 + i * 2] >> 32ULL), | |
147 | kpcd->counterv[1 + i * 2] & 0xffffffffULL); | |
148 | } | |
149 | #endif /* !__LP64__ */ | |
150 | } | |
151 | ||
152 | void | |
153 | kperf_kpc_cpu_log(const struct kpcdata *kpcd) | |
154 | { | |
155 | kperf_kpc_log(PERF_KPC_DATA, PERF_KPC_DATA32, kpcd); | |
156 | } | |
157 | ||
158 | void | |
159 | kperf_kpc_thread_log(const struct kpcdata *kpcd) | |
160 | { | |
161 | kperf_kpc_log(PERF_KPC_DATA_THREAD, PERF_KPC_DATA_THREAD32, kpcd); | |
162 | } |