/*
* Copyright (c) 2017-2021 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#ifndef MACHINE_MONOTONIC_H
#define MACHINE_MONOTONIC_H
#if CONFIG_CPU_COUNTERS
#if defined(__x86_64__)
#include <x86_64/monotonic.h>
#elif defined(__arm64__)
#include <arm64/monotonic.h>
#else
#error unsupported architecture
#endif
#include <stdatomic.h>
#include <stdbool.h>
#include <stdint.h>
struct mt_cpu {
uint64_t mtc_snaps[MT_CORE_NFIXED];
uint64_t mtc_counts[MT_CORE_NFIXED];
uint64_t mtc_counts_last[MT_CORE_NFIXED];
uint64_t mtc_npmis;
/*
* Whether this CPU should be using PMCs.
*/
bool mtc_active;
};
struct mt_cpu *mt_cur_cpu(void);
uint64_t mt_count_pmis(void);
void mt_mtc_update_fixed_counts(struct mt_cpu *mtc, uint64_t *counts,
uint64_t *counts_since);
uint64_t mt_mtc_update_count(struct mt_cpu *mtc, unsigned int ctr);
uint64_t mt_core_snap(unsigned int ctr);
void mt_core_set_snap(unsigned int ctr, uint64_t snap);
void mt_mtc_set_snap(struct mt_cpu *mtc, unsigned int ctr, uint64_t snap);
typedef void (*mt_pmi_fn)(bool user_mode, void *ctx);
extern bool mt_microstackshots;
extern unsigned int mt_microstackshot_ctr;
extern mt_pmi_fn mt_microstackshot_pmi_handler;
extern void *mt_microstackshot_ctx;
extern uint64_t mt_core_reset_values[MT_CORE_NFIXED];
int mt_microstackshot_start_arch(uint64_t period);
#endif /* CONFIG_CPU_COUNTERS */
#endif /* !defined(MACHINE_MONOTONIC_H) */