X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/b0d623f7f2ae71ed96e60569f61f9a9a27016e80..c7d2c2c6ee645e10cbccdd01c6191873ec77239d:/osfmk/kern/sched.h diff --git a/osfmk/kern/sched.h b/osfmk/kern/sched.h index e1e5ae4c0..1a46180a9 100644 --- a/osfmk/kern/sched.h +++ b/osfmk/kern/sched.h @@ -67,12 +67,9 @@ #ifndef _KERN_SCHED_H_ #define _KERN_SCHED_H_ -#include - #include #include #include -#include #include #include #include @@ -83,7 +80,6 @@ #define MAXPRI (NRQS-1) #define MINPRI IDLEPRI /* lowest legal priority schedulable */ #define IDLEPRI 0 /* idle thread priority */ -#define DEPRESSPRI MINPRI /* depress priority */ /* * High-level priority assignments @@ -151,49 +147,120 @@ #define MINPRI_KERNEL (MAXPRI_KERNEL - (NRQS / 8) + 1) /* 80 */ #define MAXPRI_RESERVED (MINPRI_KERNEL - 1) /* 79 */ +#define BASEPRI_GRAPHICS (MAXPRI_RESERVED - 3) /* 76 */ #define MINPRI_RESERVED (MAXPRI_RESERVED - (NRQS / 8) + 1) /* 64 */ #define MAXPRI_USER (MINPRI_RESERVED - 1) /* 63 */ #define BASEPRI_CONTROL (BASEPRI_DEFAULT + 17) /* 48 */ #define BASEPRI_FOREGROUND (BASEPRI_DEFAULT + 16) /* 47 */ #define BASEPRI_BACKGROUND (BASEPRI_DEFAULT + 15) /* 46 */ +#define BASEPRI_USER_INITIATED (BASEPRI_DEFAULT + 6) /* 37 */ #define BASEPRI_DEFAULT (MAXPRI_USER - (NRQS / 4)) /* 31 */ +#define MAXPRI_SUPPRESSED (BASEPRI_DEFAULT - 3) /* 28 */ +#define BASEPRI_UTILITY (BASEPRI_DEFAULT - 11) /* 20 */ +#define MAXPRI_THROTTLE (MINPRI + 4) /* 4 */ #define MINPRI_USER MINPRI /* 0 */ +#define DEPRESSPRI MINPRI /* depress priority */ +#define MAXPRI_PROMOTE (MAXPRI_KERNEL) /* ceiling for mutex promotion */ + +/* Type used for thread->sched_mode and saved_mode */ +typedef enum { + TH_MODE_NONE = 0, /* unassigned, usually for saved_mode only */ + TH_MODE_REALTIME, /* time constraints supplied */ + TH_MODE_FIXED, /* use fixed priorities, no decay */ + TH_MODE_TIMESHARE, /* use timesharing algorithm */ +} sched_mode_t; + /* * Macro to check for invalid priorities. */ #define invalid_pri(pri) ((pri) < MINPRI || (pri) > MAXPRI) +struct runq_stats { + uint64_t count_sum; + uint64_t last_change_timestamp; +}; + +#if defined(CONFIG_SCHED_TIMESHARE_CORE) || defined(CONFIG_SCHED_PROTO) + struct run_queue { int highq; /* highest runnable queue */ int bitmap[NRQBM]; /* run queue bitmap array */ int count; /* # of threads total */ int urgency; /* level of preemption urgency */ queue_head_t queues[NRQS]; /* one for each priority */ + + struct runq_stats runq_stats; }; -typedef struct run_queue *run_queue_t; -#define RUN_QUEUE_NULL ((run_queue_t) 0) +#endif /* defined(CONFIG_SCHED_TIMESHARE_CORE) || defined(CONFIG_SCHED_PROTO) */ -#define first_timeslice(processor) ((processor)->timeslice > 0) +struct rt_queue { + int count; /* # of threads total */ + queue_head_t queue; /* all runnable RT threads */ -#define thread_quantum_init(thread) \ -MACRO_BEGIN \ - (thread)->current_quantum = \ - ((thread)->sched_mode & TH_MODE_REALTIME)? \ - (thread)->realtime.computation: std_quantum; \ -MACRO_END + struct runq_stats runq_stats; +}; -extern struct run_queue rt_runq; +#if defined(CONFIG_SCHED_GRRR_CORE) /* - * Scheduler routines. + * We map standard Mach priorities to an abstract scale that more properly + * indicates how we want processor time allocated under contention. */ +typedef uint8_t grrr_proportional_priority_t; +typedef uint8_t grrr_group_index_t; + +#define NUM_GRRR_PROPORTIONAL_PRIORITIES 256 +#define MAX_GRRR_PROPORTIONAL_PRIORITY ((grrr_proportional_priority_t)255) + +#if 0 +#define NUM_GRRR_GROUPS 8 /* log(256) */ +#endif + +#define NUM_GRRR_GROUPS 64 /* 256/4 */ + +struct grrr_group { + queue_chain_t priority_order; /* next greatest weight group */ + grrr_proportional_priority_t minpriority; + grrr_group_index_t index; + + queue_head_t clients; + int count; + uint32_t weight; +#if 0 + uint32_t deferred_removal_weight; +#endif + uint32_t work; + thread_t current_client; +}; + +struct grrr_run_queue { + int count; + uint32_t last_rescale_tick; + struct grrr_group groups[NUM_GRRR_GROUPS]; + queue_head_t sorted_group_list; + uint32_t weight; + grrr_group_t current_group; + + struct runq_stats runq_stats; +}; + +#endif /* defined(CONFIG_SCHED_GRRR_CORE) */ + +extern struct rt_queue rt_runq; + +#if defined(CONFIG_SCHED_MULTIQ) +sched_group_t sched_group_create(void); +void sched_group_destroy(sched_group_t sched_group); +#endif /* defined(CONFIG_SCHED_MULTIQ) */ + + -/* Remove thread from its run queue */ -extern boolean_t run_queue_remove( - thread_t thread); +/* + * Scheduler routines. + */ /* Handle quantum expiration for an executing thread */ extern void thread_quantum_expire( @@ -201,25 +268,42 @@ extern void thread_quantum_expire( timer_call_param_t thread); /* Context switch check for current processor */ -extern ast_t csw_check(processor_t processor); +extern ast_t csw_check(processor_t processor, + ast_t check_reason); +#if defined(CONFIG_SCHED_TIMESHARE_CORE) extern uint32_t std_quantum, min_std_quantum; extern uint32_t std_quantum_us; +#endif /* CONFIG_SCHED_TIMESHARE_CORE */ + +extern uint32_t thread_depress_time; +extern uint32_t default_timeshare_computation; +extern uint32_t default_timeshare_constraint; extern uint32_t max_rt_quantum, min_rt_quantum; -extern uint32_t sched_cswtime; +extern int default_preemption_rate; +extern int default_bg_preemption_rate; + +#if defined(CONFIG_SCHED_TIMESHARE_CORE) /* - * Age usage (1 << SCHED_TICK_SHIFT) times per second. + * Age usage at approximately (1 << SCHED_TICK_SHIFT) times per second + * Aging may be deferred during periods where all processors are idle + * and cumulatively applied during periods of activity. */ #define SCHED_TICK_SHIFT 3 +#define SCHED_TICK_MAX_DELTA (8) extern unsigned sched_tick; extern uint32_t sched_tick_interval; +#endif /* CONFIG_SCHED_TIMESHARE_CORE */ + +extern uint64_t sched_one_second_interval; + /* Periodic computation of various averages */ -extern void compute_averages(void); +extern void compute_averages(uint64_t); extern void compute_averunnable( void *nrun); @@ -230,18 +314,34 @@ extern void compute_stack_target( extern void compute_memory_pressure( void *arg); +extern void compute_zone_gc_throttle( + void *arg); + +extern void compute_pageout_gc_throttle( + void *arg); + +extern void compute_pmap_gc_throttle( + void *arg); + /* * Conversion factor from usage * to priority. */ +#if defined(CONFIG_SCHED_TIMESHARE_CORE) extern uint32_t sched_pri_shift; +extern uint32_t sched_background_pri_shift; +extern uint32_t sched_combined_fgbg_pri_shift; extern uint32_t sched_fixed_shift; extern int8_t sched_load_shifts[NRQS]; +extern uint32_t sched_decay_usage_age_factor; +extern uint32_t sched_use_combined_fgbg_decay; +void sched_timeshare_consider_maintenance(uint64_t); +#endif /* CONFIG_SCHED_TIMESHARE_CORE */ extern int32_t sched_poll_yield_shift; -extern uint32_t sched_safe_duration; +extern uint64_t sched_safe_duration; -extern uint32_t sched_run_count, sched_share_count; +extern uint32_t sched_run_count, sched_share_count, sched_background_count; extern uint32_t sched_load_average, sched_mach_factor; extern uint32_t avenrun[3], mach_factor[3]; @@ -249,26 +349,50 @@ extern uint32_t avenrun[3], mach_factor[3]; extern uint64_t max_unsafe_computation; extern uint64_t max_poll_computation; -#define sched_run_incr() \ -MACRO_BEGIN \ - machine_run_count(hw_atomic_add(&sched_run_count, 1)); \ +/* TH_RUN & !TH_IDLE controls whether a thread has a run count */ +#define sched_run_incr(th) \ + hw_atomic_add(&sched_run_count, 1) \ + +#define sched_run_decr(th) \ + hw_atomic_sub(&sched_run_count, 1) \ + +#if MACH_ASSERT +extern void sched_share_incr(thread_t thread); +extern void sched_share_decr(thread_t thread); +extern void sched_background_incr(thread_t thread); +extern void sched_background_decr(thread_t thread); + +extern void assert_thread_sched_count(thread_t thread); + +#else /* MACH_ASSERT */ +/* sched_mode == TH_MODE_TIMESHARE controls whether a thread has a timeshare count when it has a run count */ +#define sched_share_incr(th) \ +MACRO_BEGIN \ + (void)hw_atomic_add(&sched_share_count, 1); \ MACRO_END -#define sched_run_decr() \ -MACRO_BEGIN \ - machine_run_count(hw_atomic_sub(&sched_run_count, 1)); \ +#define sched_share_decr(th) \ +MACRO_BEGIN \ + (void)hw_atomic_sub(&sched_share_count, 1); \ MACRO_END -#define sched_share_incr() \ -MACRO_BEGIN \ - (void)hw_atomic_add(&sched_share_count, 1); \ +/* TH_SFLAG_THROTTLED controls whether a thread has a background count when it has a run count and a share count */ +#define sched_background_incr(th) \ +MACRO_BEGIN \ + hw_atomic_add(&sched_background_count, 1); \ MACRO_END -#define sched_share_decr() \ -MACRO_BEGIN \ - (void)hw_atomic_sub(&sched_share_count, 1); \ +#define sched_background_decr(th) \ +MACRO_BEGIN \ + hw_atomic_sub(&sched_background_count, 1); \ MACRO_END +#define assert_thread_sched_count(th) \ +MACRO_BEGIN \ +MACRO_END + +#endif /* !MACH_ASSERT */ + /* * thread_timer_delta macro takes care of both thread timers. */