X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/55e303ae13a4cf49d70f2294092726f2fffb9ef2..bd504ef0e0b883cdd7917b73b3574eb9ce669905:/osfmk/kern/processor.h diff --git a/osfmk/kern/processor.h b/osfmk/kern/processor.h index 6c238db71..0407b8541 100644 --- a/osfmk/kern/processor.h +++ b/osfmk/kern/processor.h @@ -1,16 +1,19 @@ /* - * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2009 Apple Inc. All rights reserved. * - * @APPLE_LICENSE_HEADER_START@ - * - * Copyright (c) 1999-2003 Apple Computer, 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. Please obtain a copy of the License at - * http://www.opensource.apple.com/apsl/ and read it before using this - * file. + * 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 @@ -20,7 +23,7 @@ * Please see the License for the specific language governing rights and * limitations under the License. * - * @APPLE_LICENSE_HEADER_END@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * @OSF_COPYRIGHT@ @@ -54,236 +57,235 @@ */ /* - * processor.h: Processor and processor-set definitions. + * processor.h: Processor and processor-related definitions. */ #ifndef _KERN_PROCESSOR_H_ #define _KERN_PROCESSOR_H_ -/* - * Data structures for managing processors and sets of processors. - */ #include #include #include -#include - -#ifdef __APPLE_API_PRIVATE +#include #ifdef MACH_KERNEL_PRIVATE -#include - #include +#include #include #include #include #include +#include #include struct processor_set { - queue_head_t idle_queue; /* idle processors */ - int idle_count; /* how many ? */ queue_head_t active_queue; /* active processors */ + queue_head_t idle_queue; /* idle processors */ - queue_head_t processors; /* all processors here */ - int processor_count;/* how many ? */ - decl_simple_lock_data(,sched_lock) /* lock for above */ + processor_t low_pri, low_count; - struct run_queue runq; /* runq for this set */ + int online_processor_count; - queue_head_t tasks; /* tasks assigned */ - int task_count; /* how many */ - queue_head_t threads; /* threads in this set */ - int thread_count; /* how many */ - int ref_count; /* structure ref count */ - boolean_t active; /* is pset in use */ - decl_mutex_data(, lock) /* lock for above */ + int cpu_set_low, cpu_set_hi; + int cpu_set_count; - int timeshare_quanta; /* timeshare quantum factor */ - int quantum_factors[NCPUS+1]; + decl_simple_lock_data(,sched_lock) /* lock for above */ +#if defined(CONFIG_SCHED_TRADITIONAL) || defined(CONFIG_SCHED_FIXEDPRIORITY) + struct run_queue pset_runq; /* runq for this processor set */ + int pset_runq_bound_count; + /* # of threads in runq bound to any processor in pset */ +#endif + struct ipc_port * pset_self; /* port for operations */ struct ipc_port * pset_name_self; /* port for information */ - uint32_t run_count; /* threads running in set */ - uint32_t share_count; /* timeshare threads running in set */ + processor_set_t pset_list; /* chain of associated psets */ + pset_node_t node; +}; + +extern struct processor_set pset0; - integer_t mach_factor; /* mach_factor */ - integer_t load_average; /* load_average */ - uint32_t sched_load; /* load avg for scheduler */ +struct pset_node { + processor_set_t psets; /* list of associated psets */ + + pset_node_t nodes; /* list of associated subnodes */ + pset_node_t node_list; /* chain of associated nodes */ + + pset_node_t parent; }; +extern struct pset_node pset_node0; + +extern queue_head_t tasks, terminated_tasks, threads; /* Terminated tasks are ONLY for stackshot */ +extern int tasks_count, threads_count; +decl_lck_mtx_data(extern,tasks_threads_lock) + +struct processor_meta { + queue_head_t idle_queue; + processor_t primary; +}; + +typedef struct processor_meta *processor_meta_t; +#define PROCESSOR_META_NULL ((processor_meta_t) 0) + struct processor { - queue_chain_t processor_queue;/* idle/active/action queue link, + queue_chain_t processor_queue;/* idle/active queue link, * MUST remain the first element */ int state; /* See below */ struct thread *active_thread, /* thread running on processor */ - *next_thread, /* next thread to run if dispatched */ + *next_thread, /* next thread when dispatched */ *idle_thread; /* this processor's idle thread. */ - processor_set_t processor_set; /* current membership */ + processor_set_t processor_set; /* assigned set */ int current_pri; /* priority of current thread */ + sched_mode_t current_thmode; /* sched mode of current thread */ + int cpu_id; /* platform numeric id */ timer_call_data_t quantum_timer; /* timer for quantum expiration */ uint64_t quantum_end; /* time when current quantum ends */ uint64_t last_dispatch; /* time of last dispatch */ - int timeslice; /* quanta before timeslice ends */ uint64_t deadline; /* current deadline */ + int timeslice; /* quanta before timeslice ends */ + +#if defined(CONFIG_SCHED_TRADITIONAL) || defined(CONFIG_SCHED_FIXEDPRIORITY) + struct run_queue runq; /* runq for this processor */ + int runq_bound_count; /* # of threads bound to this processor */ +#endif +#if defined(CONFIG_SCHED_GRRR) + struct grrr_run_queue grrr_runq; /* Group Ratio Round-Robin runq */ +#endif + processor_meta_t processor_meta; - struct run_queue runq; /* local runq for this processor */ + struct ipc_port * processor_self; /* port for operations */ - queue_chain_t processors; /* all processors in set */ - decl_simple_lock_data(,lock) - struct ipc_port *processor_self;/* port for operations */ - int slot_num; /* machine-indep slot number */ + processor_t processor_list; /* all existing processors */ + processor_data_t processor_data; /* per-processor data */ }; -extern struct processor_set default_pset; -extern processor_t master_processor; +extern processor_t processor_list; +extern unsigned int processor_count; +decl_simple_lock_data(extern,processor_list_lock) -extern struct processor processor_array[NCPUS]; +extern uint32_t processor_avail_count; -/* - * NOTE: The processor->processor_set link is needed in one of the - * scheduler's critical paths. [Figure out where to look for another - * thread to run on this processor.] It is accessed without locking. - * The following access protocol controls this field. - * - * Read from own processor - just read. - * Read from another processor - lock processor structure during read. - * Write from own processor - lock processor structure during write. - * Write from another processor - NOT PERMITTED. - * - */ +extern processor_t master_processor; -/* - * Processor state locking: - * - * Values for the processor state are defined below. If the processor - * is off-line or being shutdown, then it is only necessary to lock - * the processor to change its state. Otherwise it is only necessary - * to lock its processor set's sched_lock. Scheduler code will - * typically lock only the sched_lock, but processor manipulation code - * will often lock both. - */ - -#define PROCESSOR_OFF_LINE 0 /* Not available */ -#define PROCESSOR_RUNNING 1 /* Normal execution */ -#define PROCESSOR_IDLE 2 /* Idle */ -#define PROCESSOR_DISPATCHING 3 /* Dispatching (idle -> running) */ -#define PROCESSOR_SHUTDOWN 4 /* Going off-line */ -#define PROCESSOR_START 5 /* Being started */ +extern boolean_t sched_stats_active; /* - * Use processor ptr array to find current processor's data structure. - * This replaces a multiplication (index into processor_array) with - * an array lookup and a memory reference. It also allows us to save - * space if processor numbering gets too sparse. + * Processor state is accessed by locking the scheduling lock + * for the assigned processor set. */ +#define PROCESSOR_OFF_LINE 0 /* Not available */ +#define PROCESSOR_SHUTDOWN 1 /* Going off-line */ +#define PROCESSOR_START 2 /* Being started */ +#define PROCESSOR_INACTIVE 3 /* Inactive (unavailable) */ +#define PROCESSOR_IDLE 4 /* Idle (available) */ +#define PROCESSOR_DISPATCHING 5 /* Dispatching (idle -> active) */ +#define PROCESSOR_RUNNING 6 /* Normal execution */ -extern processor_t processor_ptr[NCPUS]; - -#define cpu_to_processor(i) (processor_ptr[i]) - -#define current_processor() (processor_ptr[cpu_number()]) +extern processor_t current_processor(void); -/* Compatibility -- will go away */ +extern processor_t cpu_to_processor( + int cpu); -#define cpu_state(slot_num) (processor_ptr[slot_num]->state) -#define cpu_idle(slot_num) (cpu_state(slot_num) == PROCESSOR_IDLE) +/* Lock macros */ -/* Useful lock macros */ +#define pset_lock(p) simple_lock(&(p)->sched_lock) +#define pset_unlock(p) simple_unlock(&(p)->sched_lock) +#define pset_lock_init(p) simple_lock_init(&(p)->sched_lock, 0) -#define pset_lock(pset) mutex_lock(&(pset)->lock) -#define pset_lock_try(pset) mutex_try(&(pset)->lock) -#define pset_unlock(pset) mutex_unlock(&(pset)->lock) +/* Update hints */ -#define processor_lock(pr) simple_lock(&(pr)->lock) -#define processor_unlock(pr) simple_unlock(&(pr)->lock) +#define pset_pri_hint(ps, p, pri) \ +MACRO_BEGIN \ + if ((p) != (ps)->low_pri) { \ + if ((pri) < (ps)->low_pri->current_pri) \ + (ps)->low_pri = (p); \ + else \ + if ((ps)->low_pri->state < PROCESSOR_IDLE) \ + (ps)->low_pri = (p); \ + } \ +MACRO_END -extern void pset_sys_bootstrap(void); +#define pset_count_hint(ps, p, cnt) \ +MACRO_BEGIN \ + if ((p) != (ps)->low_count) { \ + if ((cnt) < SCHED(processor_runq_count)((ps)->low_count)) \ + (ps)->low_count = (p); \ + else \ + if ((ps)->low_count->state < PROCESSOR_IDLE) \ + (ps)->low_count = (p); \ + } \ +MACRO_END -#define timeshare_quanta_update(pset) \ +#define pset_pri_init_hint(ps, p) \ MACRO_BEGIN \ - int proc_count = (pset)->processor_count; \ - int runq_count = (pset)->runq.count; \ - \ - (pset)->timeshare_quanta = (pset)->quantum_factors[ \ - (runq_count > proc_count)? \ - proc_count: runq_count]; \ + (ps)->low_pri = (p); \ MACRO_END -#define pset_run_incr(pset) \ - hw_atomic_add(&(pset)->run_count, 1) +#define pset_count_init_hint(ps, p) \ +MACRO_BEGIN \ + (ps)->low_count = (p); \ +MACRO_END -#define pset_run_decr(pset) \ - hw_atomic_sub(&(pset)->run_count, 1) -#define pset_share_incr(pset) \ - hw_atomic_add(&(pset)->share_count, 1) +extern void processor_bootstrap(void) __attribute__((section("__TEXT, initcode"))); -#define pset_share_decr(pset) \ - hw_atomic_sub(&(pset)->share_count, 1) +extern void processor_init( + processor_t processor, + int cpu_id, + processor_set_t processor_set) __attribute__((section("__TEXT, initcode"))); -extern void cpu_up( - int cpu); +extern void processor_meta_init( + processor_t processor, + processor_t primary); extern kern_return_t processor_shutdown( processor_t processor); -extern void pset_remove_processor( - processor_set_t pset, - processor_t processor); - -extern void pset_add_processor( - processor_set_t pset, - processor_t processor); +extern void processor_queue_shutdown( + processor_t processor); -extern void pset_remove_task( - processor_set_t pset, - task_t task); +extern processor_set_t processor_pset( + processor_t processor); -extern void pset_add_task( - processor_set_t pset, - task_t task); +extern pset_node_t pset_node_root(void); -extern void pset_remove_thread( - processor_set_t pset, - thread_t thread); +extern processor_set_t pset_create( + pset_node_t node); -extern void pset_add_thread( +extern void pset_init( processor_set_t pset, - thread_t thread); - -extern void thread_change_psets( - thread_t thread, - processor_set_t old_pset, - processor_set_t new_pset); - -extern kern_return_t processor_assign( - processor_t processor, - processor_set_t new_pset, - boolean_t wait); + pset_node_t node) __attribute__((section("__TEXT, initcode"))); extern kern_return_t processor_info_count( processor_flavor_t flavor, mach_msg_type_number_t *count); -#endif /* MACH_KERNEL_PRIVATE */ +#define pset_deallocate(x) +#define pset_reference(x) -extern kern_return_t processor_start( - processor_t processor); +extern void machine_run_count( + uint32_t count); -extern kern_return_t processor_exit( - processor_t processor); +extern boolean_t machine_processor_is_inactive( + processor_t processor); + +extern processor_t machine_choose_processor( + processor_set_t pset, + processor_t processor); + +#else /* MACH_KERNEL_PRIVATE */ -#endif /* __APPLE_API_PRIVATE */ +__BEGIN_DECLS extern void pset_deallocate( processor_set_t pset); @@ -291,4 +293,8 @@ extern void pset_deallocate( extern void pset_reference( processor_set_t pset); +__END_DECLS + +#endif /* MACH_KERNEL_PRIVATE */ + #endif /* _KERN_PROCESSOR_H_ */