X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/cf7d32b81c573a0536dc4da4157f9c26f8d0bed3..490019cf9519204c5fb36b2fba54ceb983bb6b72:/osfmk/kern/processor.h?ds=sidebyside diff --git a/osfmk/kern/processor.h b/osfmk/kern/processor.h index 5cb479cd1..dd4586138 100644 --- a/osfmk/kern/processor.h +++ b/osfmk/kern/processor.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2000-2008 Apple Inc. All rights reserved. + * Copyright (c) 2000-2009 Apple Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * @@ -74,23 +74,53 @@ #include #include #include -#include +#include +#include +#include #include #include +#include #include -#include - struct processor_set { queue_head_t active_queue; /* active processors */ queue_head_t idle_queue; /* idle processors */ - int idle_count; + queue_head_t idle_secondary_queue; /* idle secondary processors */ - processor_t low_pri; + int online_processor_count; - int processor_count; + int cpu_set_low, cpu_set_hi; + int cpu_set_count; +#if __SMP__ decl_simple_lock_data(,sched_lock) /* lock for above */ +#endif + +#if defined(CONFIG_SCHED_TRADITIONAL) || defined(CONFIG_SCHED_MULTIQ) + struct run_queue pset_runq; /* runq for this processor set */ +#endif + +#if defined(CONFIG_SCHED_TRADITIONAL) + int pset_runq_bound_count; + /* # of threads in runq bound to any processor in pset */ +#endif + + /* CPUs that have been sent an unacknowledged remote AST for scheduling purposes */ + uint64_t pending_AST_cpu_mask; +#if defined(CONFIG_SCHED_DEFERRED_AST) + /* + * A seperate mask, for ASTs that we may be able to cancel. This is dependent on + * some level of support for requesting an AST on a processor, and then quashing + * that request later. + * + * The purpose of this field (and the associated codepaths) is to infer when we + * no longer need a processor that is DISPATCHING to come up, and to prevent it + * from coming out of IDLE if possible. This should serve to decrease the number + * of spurious ASTs in the system, and let processors spend longer periods in + * IDLE. + */ + uint64_t pending_deferred_AST_cpu_mask; +#endif struct ipc_port * pset_self; /* port for operations */ struct ipc_port * pset_name_self; /* port for information */ @@ -112,14 +142,16 @@ struct pset_node { extern struct pset_node pset_node0; -extern queue_head_t tasks, threads; -extern int tasks_count, threads_count; -decl_mutex_data(extern,tasks_threads_lock) +extern queue_head_t tasks, terminated_tasks, threads; /* Terminated tasks are ONLY for stackshot */ +extern int tasks_count, terminated_tasks_count, threads_count; +decl_lck_mtx_data(extern,tasks_threads_lock) struct processor { queue_chain_t processor_queue;/* idle/active queue link, * MUST remain the first element */ int state; /* See below */ + boolean_t is_SMT; + boolean_t is_recommended; struct thread *active_thread, /* thread running on processor */ *next_thread, /* next thread when dispatched */ @@ -128,18 +160,33 @@ struct processor { processor_set_t processor_set; /* assigned set */ int current_pri; /* priority of current thread */ + sched_mode_t current_thmode; /* sched mode of current thread */ + sfi_class_id_t current_sfi_class; /* SFI class 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 */ uint64_t deadline; /* current deadline */ - int timeslice; /* quanta before timeslice ends */ + boolean_t first_timeslice; /* has the quantum expired since context switch */ +#if defined(CONFIG_SCHED_TRADITIONAL) || defined(CONFIG_SCHED_MULTIQ) struct run_queue runq; /* runq for this processor */ +#endif + +#if defined(CONFIG_SCHED_TRADITIONAL) + 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_t processor_primary; /* pointer to primary processor for + * secondary SMT processors, or a pointer + * to ourselves for primaries or non-SMT */ + processor_t processor_secondary; struct ipc_port * processor_self; /* port for operations */ - decl_simple_lock_data(,lock) processor_t processor_list; /* all existing processors */ processor_data_t processor_data; /* per-processor data */ @@ -149,50 +196,91 @@ extern processor_t processor_list; extern unsigned int processor_count; decl_simple_lock_data(extern,processor_list_lock) -extern processor_t master_processor; +extern uint32_t processor_avail_count; + +extern processor_t master_processor; + +extern boolean_t sched_stats_active; /* * Processor state is accessed by locking the scheduling lock * for the assigned processor set. + * + * -------------------- SHUTDOWN + * / ^ ^ + * _/ | \ + * OFF_LINE ---> START ---> RUNNING ---> IDLE ---> DISPATCHING + * \_________________^ ^ ^______/ / + * \__________________/ + * + * Most of these state transitions are externally driven as a + * a directive (for instance telling an IDLE processor to start + * coming out of the idle state to run a thread). However these + * are typically paired with a handshake by the processor itself + * to indicate that it has completed a transition of indeterminate + * length (for example, the DISPATCHING->RUNNING or START->RUNNING + * transitions must occur on the processor itself). + * + * The boot processor has some special cases, and skips the START state, + * since it has already bootstrapped and is ready to context switch threads. + * + * When a processor is in DISPATCHING or RUNNING state, the current_pri, + * current_thmode, and deadline fields should be set, so that other + * processors can evaluate if it is an appropriate candidate for preemption. */ +#if defined(CONFIG_SCHED_DEFERRED_AST) +/* + * -------------------- SHUTDOWN + * / ^ ^ + * _/ | \ + * OFF_LINE ---> START ---> RUNNING ---> IDLE ---> DISPATCHING + * \_________________^ ^ ^______/ ^_____ / / + * \__________________/ + * + * A DISPATCHING processor may be put back into IDLE, if another + * processor determines that the target processor will have nothing to do + * upon reaching the RUNNING state. This is racy, but if the target + * responds and becomes RUNNING, it will not break the processor state + * machine. + * + * This change allows us to cancel an outstanding signal/AST on a processor + * (if such an operation is supported through hardware or software), and + * push the processor back into the IDLE state as a power optimization. + */ +#endif + #define PROCESSOR_OFF_LINE 0 /* Not available */ #define PROCESSOR_SHUTDOWN 1 /* Going off-line */ #define PROCESSOR_START 2 /* Being started */ -#define PROCESSOR_IDLE 3 /* Idle */ -#define PROCESSOR_DISPATCHING 4 /* Dispatching (idle -> running) */ -#define PROCESSOR_RUNNING 5 /* Normal execution */ +/* 3 Formerly Inactive (unavailable) */ +#define PROCESSOR_IDLE 4 /* Idle (available) */ +#define PROCESSOR_DISPATCHING 5 /* Dispatching (idle -> active) */ +#define PROCESSOR_RUNNING 6 /* Normal execution */ extern processor_t current_processor(void); -extern processor_t cpu_to_processor( - int cpu); - -/* Lock macros */ +/* Lock macros, always acquired and released with interrupts disabled (splsched()) */ +#if __SMP__ #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) +#else +#define pset_lock(p) do { (void)p; } while(0) +#define pset_unlock(p) do { (void)p; } while(0) +#define pset_lock_init(p) do { (void)p; } while(0) +#endif -#define processor_lock(p) simple_lock(&(p)->lock) -#define processor_unlock(p) simple_unlock(&(p)->lock) -#define processor_lock_init(p) simple_lock_init(&(p)->lock, 0) - -/* Update hints */ - -#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); \ - } \ -MACRO_END - -extern void processor_bootstrap(void) __attribute__((section("__TEXT, initcode"))); +extern void processor_bootstrap(void); extern void processor_init( processor_t processor, - int slot_num, - processor_set_t processor_set) __attribute__((section("__TEXT, initcode"))); + int cpu_id, + processor_set_t processor_set); + +extern void processor_set_primary( + processor_t processor, + processor_t primary); extern kern_return_t processor_shutdown( processor_t processor); @@ -210,7 +298,7 @@ extern processor_set_t pset_create( extern void pset_init( processor_set_t pset, - pset_node_t node) __attribute__((section("__TEXT, initcode"))); + pset_node_t node); extern kern_return_t processor_info_count( processor_flavor_t flavor, @@ -219,6 +307,24 @@ extern kern_return_t processor_info_count( #define pset_deallocate(x) #define pset_reference(x) +extern void machine_run_count( + uint32_t count); + +extern processor_t machine_choose_processor( + processor_set_t pset, + processor_t processor); + +#define next_pset(p) (((p)->pset_list != PROCESSOR_SET_NULL)? (p)->pset_list: (p)->node->psets) + +#define PSET_THING_TASK 0 +#define PSET_THING_THREAD 1 + +extern kern_return_t processor_set_things( + processor_set_t pset, + void **thing_list, + mach_msg_type_number_t *count, + int type); + #else /* MACH_KERNEL_PRIVATE */ __BEGIN_DECLS @@ -233,9 +339,11 @@ __END_DECLS #endif /* MACH_KERNEL_PRIVATE */ -#ifdef XNU_KERNEL_PRIVATE +#ifdef KERNEL_PRIVATE +__BEGIN_DECLS +extern processor_t cpu_to_processor(int cpu); +__END_DECLS -extern uint32_t processor_avail_count; +#endif /* KERNEL_PRIVATE */ -#endif #endif /* _KERN_PROCESSOR_H_ */