1 | /* |
2 | * Copyright (c) 2017-2021 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 | #ifndef MACHINE_MONOTONIC_H |
29 | #define MACHINE_MONOTONIC_H |
30 | |
31 | #if CONFIG_CPU_COUNTERS |
32 | |
33 | #if defined(__x86_64__) |
34 | #include <x86_64/monotonic.h> |
35 | #elif defined(__arm64__) |
36 | #include <arm64/monotonic.h> |
37 | #else |
38 | #error unsupported architecture |
39 | #endif |
40 | |
41 | #include <stdatomic.h> |
42 | #include <stdbool.h> |
43 | #include <stdint.h> |
44 | |
45 | struct mt_cpu { |
46 | uint64_t mtc_snaps[MT_CORE_NFIXED]; |
47 | uint64_t mtc_counts[MT_CORE_NFIXED]; |
48 | uint64_t mtc_counts_last[MT_CORE_NFIXED]; |
49 | uint64_t mtc_npmis; |
50 | /* |
51 | * Whether this CPU should be using PMCs. |
52 | */ |
53 | bool mtc_active; |
54 | }; |
55 | |
56 | struct mt_cpu *mt_cur_cpu(void); |
57 | |
58 | uint64_t mt_count_pmis(void); |
59 | void mt_mtc_update_fixed_counts(struct mt_cpu *mtc, uint64_t *counts, |
60 | uint64_t *counts_since); |
61 | uint64_t mt_mtc_update_count(struct mt_cpu *mtc, unsigned int ctr); |
62 | uint64_t mt_core_snap(unsigned int ctr); |
63 | void mt_core_set_snap(unsigned int ctr, uint64_t snap); |
64 | void mt_mtc_set_snap(struct mt_cpu *mtc, unsigned int ctr, uint64_t snap); |
65 | |
66 | typedef void (*mt_pmi_fn)(bool user_mode, void *ctx); |
67 | extern bool mt_microstackshots; |
68 | extern unsigned int mt_microstackshot_ctr; |
69 | extern mt_pmi_fn mt_microstackshot_pmi_handler; |
70 | extern void *mt_microstackshot_ctx; |
71 | extern uint64_t mt_core_reset_values[MT_CORE_NFIXED]; |
72 | int mt_microstackshot_start_arch(uint64_t period); |
73 | |
74 | #endif /* CONFIG_CPU_COUNTERS */ |
75 | |
76 | #endif /* !defined(MACHINE_MONOTONIC_H) */ |
77 | |