1/*
2 * Copyright (c) 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/*
29 * @OSF_COPYRIGHT@
30 *
31 */
32
33#include <stdbool.h>
34#include <stdint.h>
35
36#ifndef KERN_SCHED_HYGIENE_DEBUG
37#define KERN_SCHED_HYGIENE_DEBUG
38
39#if SCHED_HYGIENE_DEBUG
40
41#if !DEVELOPMENT && !DEBUG
42#error SCHED_HYGIENE_DEBUG defined without DEVELOPMENT/DEBUG
43#endif
44
45#include <mach/mach_types.h>
46
47#include <kern/startup.h>
48
49typedef enum sched_hygiene_mode {
50 SCHED_HYGIENE_MODE_OFF = 0,
51 SCHED_HYGIENE_MODE_TRACE = 1,
52 SCHED_HYGIENE_MODE_PANIC = 2,
53} sched_hygiene_mode_t;
54
55extern boolean_t sched_hygiene_debug_pmc;
56
57extern sched_hygiene_mode_t sched_preemption_disable_debug_mode;
58
59MACHINE_TIMEOUT_SPEC_DECL(sched_preemption_disable_threshold_mt);
60extern machine_timeout_t sched_preemption_disable_threshold_mt;
61
62__attribute__((noinline)) void _prepare_preemption_disable_measurement(void);
63__attribute__((noinline)) void _collect_preemption_disable_measurement(void);
64
65extern sched_hygiene_mode_t interrupt_masked_debug_mode;
66
67MACHINE_TIMEOUT_SPEC_DECL(interrupt_masked_timeout);
68MACHINE_TIMEOUT_SPEC_DECL(stackshot_interrupt_masked_timeout);
69
70extern machine_timeout_t interrupt_masked_timeout;
71extern machine_timeout_t stackshot_interrupt_masked_timeout;
72
73extern bool sched_hygiene_nonspec_tb;
74
75#define ml_get_sched_hygiene_timebase() (sched_hygiene_nonspec_tb ? ml_get_timebase() : ml_get_speculative_timebase())
76
77extern bool kprintf_spam_mt_pred(struct machine_timeout_spec const *spec);
78
79#endif /* SCHED_HYGIENE_DEBUG */
80
81#endif /* KERN_SCHED_HYGIENE_DEBUG */
82