aee0fec1fb
to illumos-gate 13953:0cc6917308f7 Illumos dtrace issues: 3529 iostat should display time used by dtrace
840 lines
30 KiB
C
840 lines
30 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright (c) 1989, 2010, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2012 by Delphix. All rights reserved.
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*/
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#ifndef _SYS_CPUVAR_H
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#define _SYS_CPUVAR_H
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#include <sys/thread.h>
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#include <sys/sysinfo.h> /* has cpu_stat_t definition */
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#include <sys/disp.h>
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#include <sys/processor.h>
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#if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP)
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#include <sys/machcpuvar.h>
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#endif
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#include <sys/types.h>
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#include <sys/file.h>
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#include <sys/bitmap.h>
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#include <sys/rwlock.h>
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#include <sys/msacct.h>
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#if defined(__GNUC__) && defined(_ASM_INLINES) && defined(_KERNEL) && \
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(defined(__i386) || defined(__amd64))
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#include <asm/cpuvar.h>
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct squeue_set_s;
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#define CPU_CACHE_COHERENCE_SIZE 64
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#define S_LOADAVG_SZ 11
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#define S_MOVAVG_SZ 10
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struct loadavg_s {
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int lg_cur; /* current loadavg entry */
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unsigned int lg_len; /* number entries recorded */
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hrtime_t lg_total; /* used to temporarily hold load totals */
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hrtime_t lg_loads[S_LOADAVG_SZ]; /* table of recorded entries */
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};
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/*
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* For fast event tracing.
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*/
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struct ftrace_record;
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typedef struct ftrace_data {
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int ftd_state; /* ftrace flags */
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kmutex_t ftd_unused; /* ftrace buffer lock, unused */
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struct ftrace_record *ftd_cur; /* current record */
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struct ftrace_record *ftd_first; /* first record */
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struct ftrace_record *ftd_last; /* last record */
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} ftrace_data_t;
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struct cyc_cpu;
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struct nvlist;
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/*
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* Per-CPU data.
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*
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* Be careful adding new members: if they are not the same in all modules (e.g.
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* change size depending on a #define), CTF uniquification can fail to work
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* properly. Furthermore, this is transitive in that it applies recursively to
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* all types pointed to by cpu_t.
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*/
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typedef struct cpu {
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processorid_t cpu_id; /* CPU number */
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processorid_t cpu_seqid; /* sequential CPU id (0..ncpus-1) */
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volatile cpu_flag_t cpu_flags; /* flags indicating CPU state */
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struct cpu *cpu_self; /* pointer to itself */
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kthread_t *cpu_thread; /* current thread */
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kthread_t *cpu_idle_thread; /* idle thread for this CPU */
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kthread_t *cpu_pause_thread; /* pause thread for this CPU */
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klwp_id_t cpu_lwp; /* current lwp (if any) */
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klwp_id_t cpu_fpowner; /* currently loaded fpu owner */
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struct cpupart *cpu_part; /* partition with this CPU */
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struct lgrp_ld *cpu_lpl; /* pointer to this cpu's load */
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int cpu_cache_offset; /* see kmem.c for details */
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/*
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* Links to other CPUs. It is safe to walk these lists if
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* one of the following is true:
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* - cpu_lock held
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* - preemption disabled via kpreempt_disable
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* - PIL >= DISP_LEVEL
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* - acting thread is an interrupt thread
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* - all other CPUs are paused
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*/
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struct cpu *cpu_next; /* next existing CPU */
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struct cpu *cpu_prev; /* prev existing CPU */
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struct cpu *cpu_next_onln; /* next online (enabled) CPU */
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struct cpu *cpu_prev_onln; /* prev online (enabled) CPU */
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struct cpu *cpu_next_part; /* next CPU in partition */
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struct cpu *cpu_prev_part; /* prev CPU in partition */
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struct cpu *cpu_next_lgrp; /* next CPU in latency group */
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struct cpu *cpu_prev_lgrp; /* prev CPU in latency group */
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struct cpu *cpu_next_lpl; /* next CPU in lgrp partition */
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struct cpu *cpu_prev_lpl;
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struct cpu_pg *cpu_pg; /* cpu's processor groups */
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void *cpu_reserved[4]; /* reserved for future use */
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/*
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* Scheduling variables.
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*/
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disp_t *cpu_disp; /* dispatch queue data */
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/*
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* Note that cpu_disp is set before the CPU is added to the system
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* and is never modified. Hence, no additional locking is needed
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* beyond what's necessary to access the cpu_t structure.
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*/
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char cpu_runrun; /* scheduling flag - set to preempt */
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char cpu_kprunrun; /* force kernel preemption */
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pri_t cpu_chosen_level; /* priority at which cpu */
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/* was chosen for scheduling */
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kthread_t *cpu_dispthread; /* thread selected for dispatch */
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disp_lock_t cpu_thread_lock; /* dispatcher lock on current thread */
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uint8_t cpu_disp_flags; /* flags used by dispatcher */
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/*
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* The following field is updated when ever the cpu_dispthread
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* changes. Also in places, where the current thread(cpu_dispthread)
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* priority changes. This is used in disp_lowpri_cpu()
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*/
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pri_t cpu_dispatch_pri; /* priority of cpu_dispthread */
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clock_t cpu_last_swtch; /* last time switched to new thread */
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/*
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* Interrupt data.
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*/
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caddr_t cpu_intr_stack; /* interrupt stack */
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kthread_t *cpu_intr_thread; /* interrupt thread list */
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uint_t cpu_intr_actv; /* interrupt levels active (bitmask) */
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int cpu_base_spl; /* priority for highest rupt active */
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/*
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* Statistics.
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*/
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cpu_stats_t cpu_stats; /* per-CPU statistics */
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struct kstat *cpu_info_kstat; /* kstat for cpu info */
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uintptr_t cpu_profile_pc; /* kernel PC in profile interrupt */
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uintptr_t cpu_profile_upc; /* user PC in profile interrupt */
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uintptr_t cpu_profile_pil; /* PIL when profile interrupted */
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ftrace_data_t cpu_ftrace; /* per cpu ftrace data */
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clock_t cpu_deadman_counter; /* used by deadman() */
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uint_t cpu_deadman_countdown; /* used by deadman() */
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kmutex_t cpu_cpc_ctxlock; /* protects context for idle thread */
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kcpc_ctx_t *cpu_cpc_ctx; /* performance counter context */
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/*
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* Configuration information for the processor_info system call.
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*/
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processor_info_t cpu_type_info; /* config info */
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time_t cpu_state_begin; /* when CPU entered current state */
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char cpu_cpr_flags; /* CPR related info */
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struct cyc_cpu *cpu_cyclic; /* per cpu cyclic subsystem data */
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struct squeue_set_s *cpu_squeue_set; /* per cpu squeue set */
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struct nvlist *cpu_props; /* pool-related properties */
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krwlock_t cpu_ft_lock; /* DTrace: fasttrap lock */
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uintptr_t cpu_dtrace_caller; /* DTrace: caller, if any */
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hrtime_t cpu_dtrace_chillmark; /* DTrace: chill mark time */
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hrtime_t cpu_dtrace_chilled; /* DTrace: total chill time */
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uint64_t cpu_dtrace_probes; /* DTrace: total probes fired */
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hrtime_t cpu_dtrace_nsec; /* DTrace: ns in dtrace_probe */
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volatile uint16_t cpu_mstate; /* cpu microstate */
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volatile uint16_t cpu_mstate_gen; /* generation counter */
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volatile hrtime_t cpu_mstate_start; /* cpu microstate start time */
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volatile hrtime_t cpu_acct[NCMSTATES]; /* cpu microstate data */
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hrtime_t cpu_intracct[NCMSTATES]; /* interrupt mstate data */
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hrtime_t cpu_waitrq; /* cpu run-queue wait time */
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struct loadavg_s cpu_loadavg; /* loadavg info for this cpu */
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char *cpu_idstr; /* for printing and debugging */
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char *cpu_brandstr; /* for printing */
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/*
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* Sum of all device interrupt weights that are currently directed at
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* this cpu. Cleared at start of interrupt redistribution.
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*/
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int32_t cpu_intr_weight;
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void *cpu_vm_data;
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struct cpu_physid *cpu_physid; /* physical associations */
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uint64_t cpu_curr_clock; /* current clock freq in Hz */
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char *cpu_supp_freqs; /* supported freqs in Hz */
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uintptr_t cpu_cpcprofile_pc; /* kernel PC in cpc interrupt */
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uintptr_t cpu_cpcprofile_upc; /* user PC in cpc interrupt */
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/*
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* Interrupt load factor used by dispatcher & softcall
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*/
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hrtime_t cpu_intrlast; /* total interrupt time (nsec) */
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int cpu_intrload; /* interrupt load factor (0-99%) */
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uint_t cpu_rotor; /* for cheap pseudo-random numbers */
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struct cu_cpu_info *cpu_cu_info; /* capacity & util. info */
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/*
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* cpu_generation is updated whenever CPU goes on-line or off-line.
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* Updates to cpu_generation are protected by cpu_lock.
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*
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* See CPU_NEW_GENERATION() macro below.
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*/
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volatile uint_t cpu_generation; /* tracking on/off-line */
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/*
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* New members must be added /before/ this member, as the CTF tools
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* rely on this being the last field before cpu_m, so they can
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* correctly calculate the offset when synthetically adding the cpu_m
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* member in objects that do not have it. This fixup is required for
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* uniquification to work correctly.
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*/
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uintptr_t cpu_m_pad;
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#if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP)
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struct machcpu cpu_m; /* per architecture info */
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#endif
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} cpu_t;
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/*
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* The cpu_core structure consists of per-CPU state available in any context.
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* On some architectures, this may mean that the page(s) containing the
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* NCPU-sized array of cpu_core structures must be locked in the TLB -- it
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* is up to the platform to assure that this is performed properly. Note that
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* the structure is sized to avoid false sharing.
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*/
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#define CPUC_SIZE (sizeof (uint16_t) + sizeof (uint8_t) + \
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sizeof (uintptr_t) + sizeof (kmutex_t))
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#define CPUC_PADSIZE CPU_CACHE_COHERENCE_SIZE - CPUC_SIZE
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typedef struct cpu_core {
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uint16_t cpuc_dtrace_flags; /* DTrace flags */
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uint8_t cpuc_dcpc_intr_state; /* DCPC provider intr state */
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uint8_t cpuc_pad[CPUC_PADSIZE]; /* padding */
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uintptr_t cpuc_dtrace_illval; /* DTrace illegal value */
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kmutex_t cpuc_pid_lock; /* DTrace pid provider lock */
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} cpu_core_t;
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#ifdef _KERNEL
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extern cpu_core_t cpu_core[];
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#endif /* _KERNEL */
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/*
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* CPU_ON_INTR() macro. Returns non-zero if currently on interrupt stack.
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* Note that this isn't a test for a high PIL. For example, cpu_intr_actv
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* does not get updated when we go through sys_trap from TL>0 at high PIL.
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* getpil() should be used instead to check for PIL levels.
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*/
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#define CPU_ON_INTR(cpup) ((cpup)->cpu_intr_actv >> (LOCK_LEVEL + 1))
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/*
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* Check to see if an interrupt thread might be active at a given ipl.
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* If so return true.
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* We must be conservative--it is ok to give a false yes, but a false no
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* will cause disaster. (But if the situation changes after we check it is
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* ok--the caller is trying to ensure that an interrupt routine has been
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* exited).
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* This is used when trying to remove an interrupt handler from an autovector
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* list in avintr.c.
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*/
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#define INTR_ACTIVE(cpup, level) \
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((level) <= LOCK_LEVEL ? \
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((cpup)->cpu_intr_actv & (1 << (level))) : (CPU_ON_INTR(cpup)))
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/*
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* CPU_PSEUDO_RANDOM() returns a per CPU value that changes each time one
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* looks at it. It's meant as a cheap mechanism to be incorporated in routines
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* wanting to avoid biasing, but where true randomness isn't needed (just
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* something that changes).
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*/
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#define CPU_PSEUDO_RANDOM() (CPU->cpu_rotor++)
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#if defined(_KERNEL) || defined(_KMEMUSER)
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#define INTR_STACK_SIZE MAX(DEFAULTSTKSZ, PAGESIZE)
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/* MEMBERS PROTECTED BY "atomicity": cpu_flags */
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/*
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* Flags in the CPU structure.
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*
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* These are protected by cpu_lock (except during creation).
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*
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* Offlined-CPUs have three stages of being offline:
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*
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* CPU_ENABLE indicates that the CPU is participating in I/O interrupts
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* that can be directed at a number of different CPUs. If CPU_ENABLE
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* is off, the CPU will not be given interrupts that can be sent elsewhere,
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* but will still get interrupts from devices associated with that CPU only,
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* and from other CPUs.
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*
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* CPU_OFFLINE indicates that the dispatcher should not allow any threads
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* other than interrupt threads to run on that CPU. A CPU will not have
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* CPU_OFFLINE set if there are any bound threads (besides interrupts).
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*
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* CPU_QUIESCED is set if p_offline was able to completely turn idle the
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* CPU and it will not have to run interrupt threads. In this case it'll
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* stay in the idle loop until CPU_QUIESCED is turned off.
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*
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* CPU_FROZEN is used only by CPR to mark CPUs that have been successfully
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* suspended (in the suspend path), or have yet to be resumed (in the resume
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* case).
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*
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* On some platforms CPUs can be individually powered off.
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* The following flags are set for powered off CPUs: CPU_QUIESCED,
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* CPU_OFFLINE, and CPU_POWEROFF. The following flags are cleared:
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* CPU_RUNNING, CPU_READY, CPU_EXISTS, and CPU_ENABLE.
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*/
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#define CPU_RUNNING 0x001 /* CPU running */
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#define CPU_READY 0x002 /* CPU ready for cross-calls */
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#define CPU_QUIESCED 0x004 /* CPU will stay in idle */
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#define CPU_EXISTS 0x008 /* CPU is configured */
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#define CPU_ENABLE 0x010 /* CPU enabled for interrupts */
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#define CPU_OFFLINE 0x020 /* CPU offline via p_online */
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#define CPU_POWEROFF 0x040 /* CPU is powered off */
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#define CPU_FROZEN 0x080 /* CPU is frozen via CPR suspend */
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#define CPU_SPARE 0x100 /* CPU offline available for use */
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#define CPU_FAULTED 0x200 /* CPU offline diagnosed faulty */
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#define FMT_CPU_FLAGS \
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"\20\12fault\11spare\10frozen" \
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"\7poweroff\6offline\5enable\4exist\3quiesced\2ready\1run"
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#define CPU_ACTIVE(cpu) (((cpu)->cpu_flags & CPU_OFFLINE) == 0)
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/*
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* Flags for cpu_offline(), cpu_faulted(), and cpu_spare().
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*/
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#define CPU_FORCED 0x0001 /* Force CPU offline */
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/*
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* DTrace flags.
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*/
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#define CPU_DTRACE_NOFAULT 0x0001 /* Don't fault */
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#define CPU_DTRACE_DROP 0x0002 /* Drop this ECB */
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#define CPU_DTRACE_BADADDR 0x0004 /* DTrace fault: bad address */
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#define CPU_DTRACE_BADALIGN 0x0008 /* DTrace fault: bad alignment */
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#define CPU_DTRACE_DIVZERO 0x0010 /* DTrace fault: divide by zero */
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#define CPU_DTRACE_ILLOP 0x0020 /* DTrace fault: illegal operation */
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#define CPU_DTRACE_NOSCRATCH 0x0040 /* DTrace fault: out of scratch */
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#define CPU_DTRACE_KPRIV 0x0080 /* DTrace fault: bad kernel access */
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#define CPU_DTRACE_UPRIV 0x0100 /* DTrace fault: bad user access */
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#define CPU_DTRACE_TUPOFLOW 0x0200 /* DTrace fault: tuple stack overflow */
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#if defined(__sparc)
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#define CPU_DTRACE_FAKERESTORE 0x0400 /* pid provider hint to getreg */
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#endif
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#define CPU_DTRACE_ENTRY 0x0800 /* pid provider hint to ustack() */
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#define CPU_DTRACE_BADSTACK 0x1000 /* DTrace fault: bad stack */
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#define CPU_DTRACE_FAULT (CPU_DTRACE_BADADDR | CPU_DTRACE_BADALIGN | \
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CPU_DTRACE_DIVZERO | CPU_DTRACE_ILLOP | \
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CPU_DTRACE_NOSCRATCH | CPU_DTRACE_KPRIV | \
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CPU_DTRACE_UPRIV | CPU_DTRACE_TUPOFLOW | \
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CPU_DTRACE_BADSTACK)
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#define CPU_DTRACE_ERROR (CPU_DTRACE_FAULT | CPU_DTRACE_DROP)
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/*
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* Dispatcher flags
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* These flags must be changed only by the current CPU.
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*/
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#define CPU_DISP_DONTSTEAL 0x01 /* CPU undergoing context swtch */
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#define CPU_DISP_HALTED 0x02 /* CPU halted waiting for interrupt */
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#endif /* _KERNEL || _KMEMUSER */
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#if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP)
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/*
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* Macros for manipulating sets of CPUs as a bitmap. Note that this
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* bitmap may vary in size depending on the maximum CPU id a specific
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* platform supports. This may be different than the number of CPUs
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* the platform supports, since CPU ids can be sparse. We define two
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* sets of macros; one for platforms where the maximum CPU id is less
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* than the number of bits in a single word (32 in a 32-bit kernel,
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* 64 in a 64-bit kernel), and one for platforms that require bitmaps
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* of more than one word.
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*/
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#define CPUSET_WORDS BT_BITOUL(NCPU)
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#define CPUSET_NOTINSET ((uint_t)-1)
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#if CPUSET_WORDS > 1
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typedef struct cpuset {
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ulong_t cpub[CPUSET_WORDS];
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} cpuset_t;
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/*
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* Private functions for manipulating cpusets that do not fit in a
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* single word. These should not be used directly; instead the
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* CPUSET_* macros should be used so the code will be portable
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* across different definitions of NCPU.
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*/
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extern void cpuset_all(cpuset_t *);
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extern void cpuset_all_but(cpuset_t *, uint_t);
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extern int cpuset_isnull(cpuset_t *);
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extern int cpuset_cmp(cpuset_t *, cpuset_t *);
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extern void cpuset_only(cpuset_t *, uint_t);
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extern uint_t cpuset_find(cpuset_t *);
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extern void cpuset_bounds(cpuset_t *, uint_t *, uint_t *);
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#define CPUSET_ALL(set) cpuset_all(&(set))
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#define CPUSET_ALL_BUT(set, cpu) cpuset_all_but(&(set), cpu)
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#define CPUSET_ONLY(set, cpu) cpuset_only(&(set), cpu)
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#define CPU_IN_SET(set, cpu) BT_TEST((set).cpub, cpu)
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#define CPUSET_ADD(set, cpu) BT_SET((set).cpub, cpu)
|
|
#define CPUSET_DEL(set, cpu) BT_CLEAR((set).cpub, cpu)
|
|
#define CPUSET_ISNULL(set) cpuset_isnull(&(set))
|
|
#define CPUSET_ISEQUAL(set1, set2) cpuset_cmp(&(set1), &(set2))
|
|
|
|
/*
|
|
* Find one CPU in the cpuset.
|
|
* Sets "cpu" to the id of the found CPU, or CPUSET_NOTINSET if no cpu
|
|
* could be found. (i.e. empty set)
|
|
*/
|
|
#define CPUSET_FIND(set, cpu) { \
|
|
cpu = cpuset_find(&(set)); \
|
|
}
|
|
|
|
/*
|
|
* Determine the smallest and largest CPU id in the set. Returns
|
|
* CPUSET_NOTINSET in smallest and largest when set is empty.
|
|
*/
|
|
#define CPUSET_BOUNDS(set, smallest, largest) { \
|
|
cpuset_bounds(&(set), &(smallest), &(largest)); \
|
|
}
|
|
|
|
/*
|
|
* Atomic cpuset operations
|
|
* These are safe to use for concurrent cpuset manipulations.
|
|
* "xdel" and "xadd" are exclusive operations, that set "result" to "0"
|
|
* if the add or del was successful, or "-1" if not successful.
|
|
* (e.g. attempting to add a cpu to a cpuset that's already there, or
|
|
* deleting a cpu that's not in the cpuset)
|
|
*/
|
|
|
|
#define CPUSET_ATOMIC_DEL(set, cpu) BT_ATOMIC_CLEAR((set).cpub, (cpu))
|
|
#define CPUSET_ATOMIC_ADD(set, cpu) BT_ATOMIC_SET((set).cpub, (cpu))
|
|
|
|
#define CPUSET_ATOMIC_XADD(set, cpu, result) \
|
|
BT_ATOMIC_SET_EXCL((set).cpub, cpu, result)
|
|
|
|
#define CPUSET_ATOMIC_XDEL(set, cpu, result) \
|
|
BT_ATOMIC_CLEAR_EXCL((set).cpub, cpu, result)
|
|
|
|
|
|
#define CPUSET_OR(set1, set2) { \
|
|
int _i; \
|
|
for (_i = 0; _i < CPUSET_WORDS; _i++) \
|
|
(set1).cpub[_i] |= (set2).cpub[_i]; \
|
|
}
|
|
|
|
#define CPUSET_XOR(set1, set2) { \
|
|
int _i; \
|
|
for (_i = 0; _i < CPUSET_WORDS; _i++) \
|
|
(set1).cpub[_i] ^= (set2).cpub[_i]; \
|
|
}
|
|
|
|
#define CPUSET_AND(set1, set2) { \
|
|
int _i; \
|
|
for (_i = 0; _i < CPUSET_WORDS; _i++) \
|
|
(set1).cpub[_i] &= (set2).cpub[_i]; \
|
|
}
|
|
|
|
#define CPUSET_ZERO(set) { \
|
|
int _i; \
|
|
for (_i = 0; _i < CPUSET_WORDS; _i++) \
|
|
(set).cpub[_i] = 0; \
|
|
}
|
|
|
|
#elif CPUSET_WORDS == 1
|
|
|
|
typedef ulong_t cpuset_t; /* a set of CPUs */
|
|
|
|
#define CPUSET(cpu) (1UL << (cpu))
|
|
|
|
#define CPUSET_ALL(set) ((void)((set) = ~0UL))
|
|
#define CPUSET_ALL_BUT(set, cpu) ((void)((set) = ~CPUSET(cpu)))
|
|
#define CPUSET_ONLY(set, cpu) ((void)((set) = CPUSET(cpu)))
|
|
#define CPU_IN_SET(set, cpu) ((set) & CPUSET(cpu))
|
|
#define CPUSET_ADD(set, cpu) ((void)((set) |= CPUSET(cpu)))
|
|
#define CPUSET_DEL(set, cpu) ((void)((set) &= ~CPUSET(cpu)))
|
|
#define CPUSET_ISNULL(set) ((set) == 0)
|
|
#define CPUSET_ISEQUAL(set1, set2) ((set1) == (set2))
|
|
#define CPUSET_OR(set1, set2) ((void)((set1) |= (set2)))
|
|
#define CPUSET_XOR(set1, set2) ((void)((set1) ^= (set2)))
|
|
#define CPUSET_AND(set1, set2) ((void)((set1) &= (set2)))
|
|
#define CPUSET_ZERO(set) ((void)((set) = 0))
|
|
|
|
#define CPUSET_FIND(set, cpu) { \
|
|
cpu = (uint_t)(lowbit(set) - 1); \
|
|
}
|
|
|
|
#define CPUSET_BOUNDS(set, smallest, largest) { \
|
|
smallest = (uint_t)(lowbit(set) - 1); \
|
|
largest = (uint_t)(highbit(set) - 1); \
|
|
}
|
|
|
|
#define CPUSET_ATOMIC_DEL(set, cpu) atomic_and_long(&(set), ~CPUSET(cpu))
|
|
#define CPUSET_ATOMIC_ADD(set, cpu) atomic_or_long(&(set), CPUSET(cpu))
|
|
|
|
#define CPUSET_ATOMIC_XADD(set, cpu, result) \
|
|
{ result = atomic_set_long_excl(&(set), (cpu)); }
|
|
|
|
#define CPUSET_ATOMIC_XDEL(set, cpu, result) \
|
|
{ result = atomic_clear_long_excl(&(set), (cpu)); }
|
|
|
|
#else /* CPUSET_WORDS <= 0 */
|
|
|
|
#error NCPU is undefined or invalid
|
|
|
|
#endif /* CPUSET_WORDS */
|
|
|
|
extern cpuset_t cpu_seqid_inuse;
|
|
|
|
#endif /* (_KERNEL || _KMEMUSER) && _MACHDEP */
|
|
|
|
#define CPU_CPR_OFFLINE 0x0
|
|
#define CPU_CPR_ONLINE 0x1
|
|
#define CPU_CPR_IS_OFFLINE(cpu) (((cpu)->cpu_cpr_flags & CPU_CPR_ONLINE) == 0)
|
|
#define CPU_CPR_IS_ONLINE(cpu) ((cpu)->cpu_cpr_flags & CPU_CPR_ONLINE)
|
|
#define CPU_SET_CPR_FLAGS(cpu, flag) ((cpu)->cpu_cpr_flags |= flag)
|
|
|
|
#if defined(_KERNEL) || defined(_KMEMUSER)
|
|
|
|
extern struct cpu *cpu[]; /* indexed by CPU number */
|
|
extern struct cpu **cpu_seq; /* indexed by sequential CPU id */
|
|
extern cpu_t *cpu_list; /* list of CPUs */
|
|
extern cpu_t *cpu_active; /* list of active CPUs */
|
|
extern int ncpus; /* number of CPUs present */
|
|
extern int ncpus_online; /* number of CPUs not quiesced */
|
|
extern int max_ncpus; /* max present before ncpus is known */
|
|
extern int boot_max_ncpus; /* like max_ncpus but for real */
|
|
extern int boot_ncpus; /* # cpus present @ boot */
|
|
extern processorid_t max_cpuid; /* maximum CPU number */
|
|
extern struct cpu *cpu_inmotion; /* offline or partition move target */
|
|
extern cpu_t *clock_cpu_list;
|
|
extern processorid_t max_cpu_seqid_ever; /* maximum seqid ever given */
|
|
|
|
#if defined(__i386) || defined(__amd64)
|
|
extern struct cpu *curcpup(void);
|
|
#define CPU (curcpup()) /* Pointer to current CPU */
|
|
#else
|
|
#define CPU (curthread->t_cpu) /* Pointer to current CPU */
|
|
#endif
|
|
|
|
/*
|
|
* CPU_CURRENT indicates to thread_affinity_set to use CPU->cpu_id
|
|
* as the target and to grab cpu_lock instead of requiring the caller
|
|
* to grab it.
|
|
*/
|
|
#define CPU_CURRENT -3
|
|
|
|
/*
|
|
* Per-CPU statistics
|
|
*
|
|
* cpu_stats_t contains numerous system and VM-related statistics, in the form
|
|
* of gauges or monotonically-increasing event occurrence counts.
|
|
*/
|
|
|
|
#define CPU_STATS_ENTER_K() kpreempt_disable()
|
|
#define CPU_STATS_EXIT_K() kpreempt_enable()
|
|
|
|
#define CPU_STATS_ADD_K(class, stat, amount) \
|
|
{ kpreempt_disable(); /* keep from switching CPUs */\
|
|
CPU_STATS_ADDQ(CPU, class, stat, amount); \
|
|
kpreempt_enable(); \
|
|
}
|
|
|
|
#define CPU_STATS_ADDQ(cp, class, stat, amount) { \
|
|
extern void __dtrace_probe___cpu_##class##info_##stat(uint_t, \
|
|
uint64_t *, cpu_t *); \
|
|
uint64_t *stataddr = &((cp)->cpu_stats.class.stat); \
|
|
__dtrace_probe___cpu_##class##info_##stat((amount), \
|
|
stataddr, cp); \
|
|
*(stataddr) += (amount); \
|
|
}
|
|
|
|
#define CPU_STATS(cp, stat) \
|
|
((cp)->cpu_stats.stat)
|
|
|
|
/*
|
|
* Increment CPU generation value.
|
|
* This macro should be called whenever CPU goes on-line or off-line.
|
|
* Updates to cpu_generation should be protected by cpu_lock.
|
|
*/
|
|
#define CPU_NEW_GENERATION(cp) ((cp)->cpu_generation++)
|
|
|
|
#endif /* _KERNEL || _KMEMUSER */
|
|
|
|
/*
|
|
* CPU support routines.
|
|
*/
|
|
#if defined(_KERNEL) && defined(__STDC__) /* not for genassym.c */
|
|
|
|
struct zone;
|
|
|
|
void cpu_list_init(cpu_t *);
|
|
void cpu_add_unit(cpu_t *);
|
|
void cpu_del_unit(int cpuid);
|
|
void cpu_add_active(cpu_t *);
|
|
void cpu_kstat_init(cpu_t *);
|
|
void cpu_visibility_add(cpu_t *, struct zone *);
|
|
void cpu_visibility_remove(cpu_t *, struct zone *);
|
|
void cpu_visibility_configure(cpu_t *, struct zone *);
|
|
void cpu_visibility_unconfigure(cpu_t *, struct zone *);
|
|
void cpu_visibility_online(cpu_t *, struct zone *);
|
|
void cpu_visibility_offline(cpu_t *, struct zone *);
|
|
void cpu_create_intrstat(cpu_t *);
|
|
void cpu_delete_intrstat(cpu_t *);
|
|
int cpu_kstat_intrstat_update(kstat_t *, int);
|
|
void cpu_intr_swtch_enter(kthread_t *);
|
|
void cpu_intr_swtch_exit(kthread_t *);
|
|
|
|
void mbox_lock_init(void); /* initialize cross-call locks */
|
|
void mbox_init(int cpun); /* initialize cross-calls */
|
|
void poke_cpu(int cpun); /* interrupt another CPU (to preempt) */
|
|
|
|
/*
|
|
* values for safe_list. Pause state that CPUs are in.
|
|
*/
|
|
#define PAUSE_IDLE 0 /* normal state */
|
|
#define PAUSE_READY 1 /* paused thread ready to spl */
|
|
#define PAUSE_WAIT 2 /* paused thread is spl-ed high */
|
|
#define PAUSE_DIE 3 /* tell pause thread to leave */
|
|
#define PAUSE_DEAD 4 /* pause thread has left */
|
|
|
|
void mach_cpu_pause(volatile char *);
|
|
|
|
void pause_cpus(cpu_t *off_cp);
|
|
void start_cpus(void);
|
|
int cpus_paused(void);
|
|
|
|
void cpu_pause_init(void);
|
|
cpu_t *cpu_get(processorid_t cpun); /* get the CPU struct associated */
|
|
|
|
int cpu_online(cpu_t *cp); /* take cpu online */
|
|
int cpu_offline(cpu_t *cp, int flags); /* take cpu offline */
|
|
int cpu_spare(cpu_t *cp, int flags); /* take cpu to spare */
|
|
int cpu_faulted(cpu_t *cp, int flags); /* take cpu to faulted */
|
|
int cpu_poweron(cpu_t *cp); /* take powered-off cpu to offline */
|
|
int cpu_poweroff(cpu_t *cp); /* take offline cpu to powered-off */
|
|
|
|
cpu_t *cpu_intr_next(cpu_t *cp); /* get next online CPU taking intrs */
|
|
int cpu_intr_count(cpu_t *cp); /* count # of CPUs handling intrs */
|
|
int cpu_intr_on(cpu_t *cp); /* CPU taking I/O interrupts? */
|
|
void cpu_intr_enable(cpu_t *cp); /* enable I/O interrupts */
|
|
int cpu_intr_disable(cpu_t *cp); /* disable I/O interrupts */
|
|
void cpu_intr_alloc(cpu_t *cp, int n); /* allocate interrupt threads */
|
|
|
|
/*
|
|
* Routines for checking CPU states.
|
|
*/
|
|
int cpu_is_online(cpu_t *); /* check if CPU is online */
|
|
int cpu_is_nointr(cpu_t *); /* check if CPU can service intrs */
|
|
int cpu_is_active(cpu_t *); /* check if CPU can run threads */
|
|
int cpu_is_offline(cpu_t *); /* check if CPU is offline */
|
|
int cpu_is_poweredoff(cpu_t *); /* check if CPU is powered off */
|
|
|
|
int cpu_flagged_online(cpu_flag_t); /* flags show CPU is online */
|
|
int cpu_flagged_nointr(cpu_flag_t); /* flags show CPU not handling intrs */
|
|
int cpu_flagged_active(cpu_flag_t); /* flags show CPU scheduling threads */
|
|
int cpu_flagged_offline(cpu_flag_t); /* flags show CPU is offline */
|
|
int cpu_flagged_poweredoff(cpu_flag_t); /* flags show CPU is powered off */
|
|
|
|
/*
|
|
* The processor_info(2) state of a CPU is a simplified representation suitable
|
|
* for use by an application program. Kernel subsystems should utilize the
|
|
* internal per-CPU state as given by the cpu_flags member of the cpu structure,
|
|
* as this information may include platform- or architecture-specific state
|
|
* critical to a subsystem's disposition of a particular CPU.
|
|
*/
|
|
void cpu_set_state(cpu_t *); /* record/timestamp current state */
|
|
int cpu_get_state(cpu_t *); /* get current cpu state */
|
|
const char *cpu_get_state_str(cpu_t *); /* get current cpu state as string */
|
|
|
|
|
|
void cpu_set_curr_clock(uint64_t); /* indicate the current CPU's freq */
|
|
void cpu_set_supp_freqs(cpu_t *, const char *); /* set the CPU supported */
|
|
/* frequencies */
|
|
|
|
int cpu_configure(int);
|
|
int cpu_unconfigure(int);
|
|
void cpu_destroy_bound_threads(cpu_t *cp);
|
|
|
|
extern int cpu_bind_thread(kthread_t *tp, processorid_t bind,
|
|
processorid_t *obind, int *error);
|
|
extern int cpu_unbind(processorid_t cpu_id, boolean_t force);
|
|
extern void thread_affinity_set(kthread_t *t, int cpu_id);
|
|
extern void thread_affinity_clear(kthread_t *t);
|
|
extern void affinity_set(int cpu_id);
|
|
extern void affinity_clear(void);
|
|
extern void init_cpu_mstate(struct cpu *, int);
|
|
extern void term_cpu_mstate(struct cpu *);
|
|
extern void new_cpu_mstate(int, hrtime_t);
|
|
extern void get_cpu_mstate(struct cpu *, hrtime_t *);
|
|
extern void thread_nomigrate(void);
|
|
extern void thread_allowmigrate(void);
|
|
extern void weakbinding_stop(void);
|
|
extern void weakbinding_start(void);
|
|
|
|
/*
|
|
* The following routines affect the CPUs participation in interrupt processing,
|
|
* if that is applicable on the architecture. This only affects interrupts
|
|
* which aren't directed at the processor (not cross calls).
|
|
*
|
|
* cpu_disable_intr returns non-zero if interrupts were previously enabled.
|
|
*/
|
|
int cpu_disable_intr(struct cpu *cp); /* stop issuing interrupts to cpu */
|
|
void cpu_enable_intr(struct cpu *cp); /* start issuing interrupts to cpu */
|
|
|
|
/*
|
|
* The mutex cpu_lock protects cpu_flags for all CPUs, as well as the ncpus
|
|
* and ncpus_online counts.
|
|
*/
|
|
extern kmutex_t cpu_lock; /* lock protecting CPU data */
|
|
|
|
/*
|
|
* CPU state change events
|
|
*
|
|
* Various subsystems need to know when CPUs change their state. They get this
|
|
* information by registering CPU state change callbacks using
|
|
* register_cpu_setup_func(). Whenever any CPU changes its state, the callback
|
|
* function is called. The callback function is passed three arguments:
|
|
*
|
|
* Event, described by cpu_setup_t
|
|
* CPU ID
|
|
* Transparent pointer passed when registering the callback
|
|
*
|
|
* The callback function is called with cpu_lock held. The return value from the
|
|
* callback function is usually ignored, except for CPU_CONFIG and CPU_UNCONFIG
|
|
* events. For these two events, non-zero return value indicates a failure and
|
|
* prevents successful completion of the operation.
|
|
*
|
|
* New events may be added in the future. Callback functions should ignore any
|
|
* events that they do not understand.
|
|
*
|
|
* The following events provide notification callbacks:
|
|
*
|
|
* CPU_INIT A new CPU is started and added to the list of active CPUs
|
|
* This event is only used during boot
|
|
*
|
|
* CPU_CONFIG A newly inserted CPU is prepared for starting running code
|
|
* This event is called by DR code
|
|
*
|
|
* CPU_UNCONFIG CPU has been powered off and needs cleanup
|
|
* This event is called by DR code
|
|
*
|
|
* CPU_ON CPU is enabled but does not run anything yet
|
|
*
|
|
* CPU_INTR_ON CPU is enabled and has interrupts enabled
|
|
*
|
|
* CPU_OFF CPU is going offline but can still run threads
|
|
*
|
|
* CPU_CPUPART_OUT CPU is going to move out of its partition
|
|
*
|
|
* CPU_CPUPART_IN CPU is going to move to a new partition
|
|
*
|
|
* CPU_SETUP CPU is set up during boot and can run threads
|
|
*/
|
|
typedef enum {
|
|
CPU_INIT,
|
|
CPU_CONFIG,
|
|
CPU_UNCONFIG,
|
|
CPU_ON,
|
|
CPU_OFF,
|
|
CPU_CPUPART_IN,
|
|
CPU_CPUPART_OUT,
|
|
CPU_SETUP,
|
|
CPU_INTR_ON
|
|
} cpu_setup_t;
|
|
|
|
typedef int cpu_setup_func_t(cpu_setup_t, int, void *);
|
|
|
|
/*
|
|
* Routines used to register interest in cpu's being added to or removed
|
|
* from the system.
|
|
*/
|
|
extern void register_cpu_setup_func(cpu_setup_func_t *, void *);
|
|
extern void unregister_cpu_setup_func(cpu_setup_func_t *, void *);
|
|
extern void cpu_state_change_notify(int, cpu_setup_t);
|
|
|
|
/*
|
|
* Call specified function on the given CPU
|
|
*/
|
|
typedef void (*cpu_call_func_t)(uintptr_t, uintptr_t);
|
|
extern void cpu_call(cpu_t *, cpu_call_func_t, uintptr_t, uintptr_t);
|
|
|
|
|
|
/*
|
|
* Create various strings that describe the given CPU for the
|
|
* processor_info system call and configuration-related kstats.
|
|
*/
|
|
#define CPU_IDSTRLEN 100
|
|
|
|
extern void init_cpu_info(struct cpu *);
|
|
extern void populate_idstr(struct cpu *);
|
|
extern void cpu_vm_data_init(struct cpu *);
|
|
extern void cpu_vm_data_destroy(struct cpu *);
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _SYS_CPUVAR_H */
|