1 /* 2 * Copyright (c) 2017 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 defined(__x86_64__) 32 #include <x86_64/monotonic.h> 33 #elif defined(__arm64__) 34 #include <arm64/monotonic.h> 35 #elif defined(__arm__) 36 #include <arm/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_thread { 57 _Atomic uint64_t mth_gen; 58 uint64_t mth_counts[MT_CORE_NFIXED]; 59 }; 60 61 struct mt_task { 62 uint64_t mtk_counts[MT_CORE_NFIXED]; 63 }; 64 65 struct mt_cpu *mt_cur_cpu(void); 66 67 uint64_t mt_count_pmis(void); 68 void mt_mtc_update_fixed_counts(struct mt_cpu *mtc, uint64_t *counts, 69 uint64_t *counts_since); 70 uint64_t mt_mtc_update_count(struct mt_cpu *mtc, unsigned int ctr); 71 uint64_t mt_core_snap(unsigned int ctr); 72 void mt_core_set_snap(unsigned int ctr, uint64_t snap); 73 void mt_mtc_set_snap(struct mt_cpu *mtc, unsigned int ctr, uint64_t snap); 74 75 typedef void (*mt_pmi_fn)(bool user_mode, void *ctx); 76 extern bool mt_microstackshots; 77 extern unsigned int mt_microstackshot_ctr; 78 extern mt_pmi_fn mt_microstackshot_pmi_handler; 79 extern void *mt_microstackshot_ctx; 80 extern uint64_t mt_core_reset_values[MT_CORE_NFIXED]; 81 int mt_microstackshot_start_arch(uint64_t period); 82 83 #endif /* !defined(MACHINE_MONOTONIC_H) */ 84