/*
* Copyright (c) 2020-2023 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
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*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
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#include <kern/percpu.h>
#include <kern/timeout.h>
#include <stdatomic.h>
#include <stdbool.h>
#include <stdint.h>
#pragma once
/*
* This header is only meant for the PPL and SPTM pmap to access the preemption disable data
* structure directly for the purposes of managing timeouts.
*/
/**
* Track time and other counters during a preemption disabled window,
* when `SCHED_HYGIENE` is configured.
*/
struct _preemption_disable_pcpu {
/* Timeout structure to track this preemption disable. */
kern_timeout_t pdp_timeout;
/* The maximum duration seen by this CPU, in Mach time units. */
_Atomic uint64_t pdp_max_mach_duration;
};
PERCPU_DECL(struct _preemption_disable_pcpu, _preemption_disable_pcpu_data);