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 49 typedef 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 55 extern boolean_t sched_hygiene_debug_pmc; 56 57 extern sched_hygiene_mode_t sched_preemption_disable_debug_mode; 58 59 MACHINE_TIMEOUT_SPEC_DECL(sched_preemption_disable_threshold_mt); 60 extern 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 65 extern sched_hygiene_mode_t interrupt_masked_debug_mode; 66 67 MACHINE_TIMEOUT_SPEC_DECL(interrupt_masked_timeout); 68 MACHINE_TIMEOUT_SPEC_DECL(stackshot_interrupt_masked_timeout); 69 70 extern machine_timeout_t interrupt_masked_timeout; 71 extern machine_timeout_t stackshot_interrupt_masked_timeout; 72 73 extern 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 77 extern 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