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Diffstat (limited to 'sys/cddl/contrib/opensolaris/uts/common/sys/cpuvar.h')
| -rw-r--r-- | sys/cddl/contrib/opensolaris/uts/common/sys/cpuvar.h | 737 |
1 files changed, 737 insertions, 0 deletions
diff --git a/sys/cddl/contrib/opensolaris/uts/common/sys/cpuvar.h b/sys/cddl/contrib/opensolaris/uts/common/sys/cpuvar.h new file mode 100644 index 0000000..c7b76b3 --- /dev/null +++ b/sys/cddl/contrib/opensolaris/uts/common/sys/cpuvar.h @@ -0,0 +1,737 @@ +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License (the "License"). + * You may not use this file except in compliance with the License. + * + * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE + * or http://www.opensolaris.org/os/licensing. + * See the License for the specific language governing permissions + * and limitations under the License. + * + * When distributing Covered Code, include this CDDL HEADER in each + * file and include the License file at usr/src/OPENSOLARIS.LICENSE. + * If applicable, add the following below this CDDL HEADER, with the + * fields enclosed by brackets "[]" replaced with your own identifying + * information: Portions Copyright [yyyy] [name of copyright owner] + * + * CDDL HEADER END + */ + +/* + * Copyright 2008 Sun Microsystems, Inc. All rights reserved. + * Use is subject to license terms. + */ + +#ifndef _SYS_CPUVAR_H +#define _SYS_CPUVAR_H + +#pragma ident "%Z%%M% %I% %E% SMI" + +#include <sys/thread.h> +#include <sys/sysinfo.h> /* has cpu_stat_t definition */ +#include <sys/disp.h> +#include <sys/processor.h> + +#if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP) +#include <sys/machcpuvar.h> +#endif + +#include <sys/types.h> +#include <sys/file.h> +#include <sys/bitmap.h> +#include <sys/rwlock.h> +#include <sys/msacct.h> +#if defined(__GNUC__) && defined(_ASM_INLINES) && defined(_KERNEL) && \ + (defined(__i386) || defined(__amd64)) +#include <asm/cpuvar.h> +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +struct squeue_set_s; + +#define CPU_CACHE_COHERENCE_SIZE 64 +#define S_LOADAVG_SZ 11 +#define S_MOVAVG_SZ 10 + +struct loadavg_s { + int lg_cur; /* current loadavg entry */ + unsigned int lg_len; /* number entries recorded */ + hrtime_t lg_total; /* used to temporarily hold load totals */ + hrtime_t lg_loads[S_LOADAVG_SZ]; /* table of recorded entries */ +}; + +/* + * For fast event tracing. + */ +struct ftrace_record; +typedef struct ftrace_data { + int ftd_state; /* ftrace flags */ + kmutex_t ftd_unused; /* ftrace buffer lock, unused */ + struct ftrace_record *ftd_cur; /* current record */ + struct ftrace_record *ftd_first; /* first record */ + struct ftrace_record *ftd_last; /* last record */ +} ftrace_data_t; + +struct cyc_cpu; +struct nvlist; + +/* + * Per-CPU data. + * + * Be careful adding new members: if they are not the same in all modules (e.g. + * change size depending on a #define), CTF uniquification can fail to work + * properly. Furthermore, this is transitive in that it applies recursively to + * all types pointed to by cpu_t. + */ +typedef struct cpu { + processorid_t cpu_id; /* CPU number */ + processorid_t cpu_seqid; /* sequential CPU id (0..ncpus-1) */ + volatile cpu_flag_t cpu_flags; /* flags indicating CPU state */ + struct cpu *cpu_self; /* pointer to itself */ + kthread_t *cpu_thread; /* current thread */ + kthread_t *cpu_idle_thread; /* idle thread for this CPU */ + kthread_t *cpu_pause_thread; /* pause thread for this CPU */ + klwp_id_t cpu_lwp; /* current lwp (if any) */ + klwp_id_t cpu_fpowner; /* currently loaded fpu owner */ + struct cpupart *cpu_part; /* partition with this CPU */ + struct lgrp_ld *cpu_lpl; /* pointer to this cpu's load */ + int cpu_cache_offset; /* see kmem.c for details */ + + /* + * Links to other CPUs. It is safe to walk these lists if + * one of the following is true: + * - cpu_lock held + * - preemption disabled via kpreempt_disable + * - PIL >= DISP_LEVEL + * - acting thread is an interrupt thread + * - all other CPUs are paused + */ + struct cpu *cpu_next; /* next existing CPU */ + struct cpu *cpu_prev; /* prev existing CPU */ + struct cpu *cpu_next_onln; /* next online (enabled) CPU */ + struct cpu *cpu_prev_onln; /* prev online (enabled) CPU */ + struct cpu *cpu_next_part; /* next CPU in partition */ + struct cpu *cpu_prev_part; /* prev CPU in partition */ + struct cpu *cpu_next_lgrp; /* next CPU in latency group */ + struct cpu *cpu_prev_lgrp; /* prev CPU in latency group */ + struct cpu *cpu_next_lpl; /* next CPU in lgrp partition */ + struct cpu *cpu_prev_lpl; + + struct cpu_pg *cpu_pg; /* cpu's processor groups */ + + void *cpu_reserved[4]; /* reserved for future use */ + + /* + * Scheduling variables. + */ + disp_t *cpu_disp; /* dispatch queue data */ + /* + * Note that cpu_disp is set before the CPU is added to the system + * and is never modified. Hence, no additional locking is needed + * beyond what's necessary to access the cpu_t structure. + */ + char cpu_runrun; /* scheduling flag - set to preempt */ + char cpu_kprunrun; /* force kernel preemption */ + pri_t cpu_chosen_level; /* priority at which cpu */ + /* was chosen for scheduling */ + kthread_t *cpu_dispthread; /* thread selected for dispatch */ + disp_lock_t cpu_thread_lock; /* dispatcher lock on current thread */ + uint8_t cpu_disp_flags; /* flags used by dispatcher */ + /* + * The following field is updated when ever the cpu_dispthread + * changes. Also in places, where the current thread(cpu_dispthread) + * priority changes. This is used in disp_lowpri_cpu() + */ + pri_t cpu_dispatch_pri; /* priority of cpu_dispthread */ + clock_t cpu_last_swtch; /* last time switched to new thread */ + + /* + * Interrupt data. + */ + caddr_t cpu_intr_stack; /* interrupt stack */ + kthread_t *cpu_intr_thread; /* interrupt thread list */ + uint_t cpu_intr_actv; /* interrupt levels active (bitmask) */ + int cpu_base_spl; /* priority for highest rupt active */ + + /* + * Statistics. + */ + cpu_stats_t cpu_stats; /* per-CPU statistics */ + struct kstat *cpu_info_kstat; /* kstat for cpu info */ + + uintptr_t cpu_profile_pc; /* kernel PC in profile interrupt */ + uintptr_t cpu_profile_upc; /* user PC in profile interrupt */ + uintptr_t cpu_profile_pil; /* PIL when profile interrupted */ + + ftrace_data_t cpu_ftrace; /* per cpu ftrace data */ + + clock_t cpu_deadman_lbolt; /* used by deadman() */ + uint_t cpu_deadman_countdown; /* used by deadman() */ + + kmutex_t cpu_cpc_ctxlock; /* protects context for idle thread */ + kcpc_ctx_t *cpu_cpc_ctx; /* performance counter context */ + + /* + * Configuration information for the processor_info system call. + */ + processor_info_t cpu_type_info; /* config info */ + time_t cpu_state_begin; /* when CPU entered current state */ + char cpu_cpr_flags; /* CPR related info */ + struct cyc_cpu *cpu_cyclic; /* per cpu cyclic subsystem data */ + struct squeue_set_s *cpu_squeue_set; /* per cpu squeue set */ + struct nvlist *cpu_props; /* pool-related properties */ + + krwlock_t cpu_ft_lock; /* DTrace: fasttrap lock */ + uintptr_t cpu_dtrace_caller; /* DTrace: caller, if any */ + hrtime_t cpu_dtrace_chillmark; /* DTrace: chill mark time */ + hrtime_t cpu_dtrace_chilled; /* DTrace: total chill time */ + volatile uint16_t cpu_mstate; /* cpu microstate */ + volatile uint16_t cpu_mstate_gen; /* generation counter */ + volatile hrtime_t cpu_mstate_start; /* cpu microstate start time */ + volatile hrtime_t cpu_acct[NCMSTATES]; /* cpu microstate data */ + hrtime_t cpu_intracct[NCMSTATES]; /* interrupt mstate data */ + hrtime_t cpu_waitrq; /* cpu run-queue wait time */ + struct loadavg_s cpu_loadavg; /* loadavg info for this cpu */ + + char *cpu_idstr; /* for printing and debugging */ + char *cpu_brandstr; /* for printing */ + + /* + * Sum of all device interrupt weights that are currently directed at + * this cpu. Cleared at start of interrupt redistribution. + */ + int32_t cpu_intr_weight; + void *cpu_vm_data; + + struct cpu_physid *cpu_physid; /* physical associations */ + + uint64_t cpu_curr_clock; /* current clock freq in Hz */ + char *cpu_supp_freqs; /* supported freqs in Hz */ + + /* + * Interrupt load factor used by dispatcher & softcall + */ + hrtime_t cpu_intrlast; /* total interrupt time (nsec) */ + int cpu_intrload; /* interrupt load factor (0-99%) */ + + /* + * New members must be added /before/ this member, as the CTF tools + * rely on this being the last field before cpu_m, so they can + * correctly calculate the offset when synthetically adding the cpu_m + * member in objects that do not have it. This fixup is required for + * uniquification to work correctly. + */ + uintptr_t cpu_m_pad; + +#if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP) + struct machcpu cpu_m; /* per architecture info */ +#endif +} cpu_t; + +/* + * The cpu_core structure consists of per-CPU state available in any context. + * On some architectures, this may mean that the page(s) containing the + * NCPU-sized array of cpu_core structures must be locked in the TLB -- it + * is up to the platform to assure that this is performed properly. Note that + * the structure is sized to avoid false sharing. + */ +#define CPUC_SIZE (sizeof (uint16_t) + sizeof (uintptr_t) + \ + sizeof (kmutex_t)) +#define CPUC_PADSIZE CPU_CACHE_COHERENCE_SIZE - CPUC_SIZE + +typedef struct cpu_core { + uint16_t cpuc_dtrace_flags; /* DTrace flags */ + uint8_t cpuc_pad[CPUC_PADSIZE]; /* padding */ + uintptr_t cpuc_dtrace_illval; /* DTrace illegal value */ + kmutex_t cpuc_pid_lock; /* DTrace pid provider lock */ +} cpu_core_t; + +#ifdef _KERNEL +extern cpu_core_t cpu_core[]; +#endif /* _KERNEL */ + +/* + * CPU_ON_INTR() macro. Returns non-zero if currently on interrupt stack. + * Note that this isn't a test for a high PIL. For example, cpu_intr_actv + * does not get updated when we go through sys_trap from TL>0 at high PIL. + * getpil() should be used instead to check for PIL levels. + */ +#define CPU_ON_INTR(cpup) ((cpup)->cpu_intr_actv >> (LOCK_LEVEL + 1)) + +#if defined(_KERNEL) || defined(_KMEMUSER) + +#define INTR_STACK_SIZE MAX(DEFAULTSTKSZ, PAGESIZE) + +/* MEMBERS PROTECTED BY "atomicity": cpu_flags */ + +/* + * Flags in the CPU structure. + * + * These are protected by cpu_lock (except during creation). + * + * Offlined-CPUs have three stages of being offline: + * + * CPU_ENABLE indicates that the CPU is participating in I/O interrupts + * that can be directed at a number of different CPUs. If CPU_ENABLE + * is off, the CPU will not be given interrupts that can be sent elsewhere, + * but will still get interrupts from devices associated with that CPU only, + * and from other CPUs. + * + * CPU_OFFLINE indicates that the dispatcher should not allow any threads + * other than interrupt threads to run on that CPU. A CPU will not have + * CPU_OFFLINE set if there are any bound threads (besides interrupts). + * + * CPU_QUIESCED is set if p_offline was able to completely turn idle the + * CPU and it will not have to run interrupt threads. In this case it'll + * stay in the idle loop until CPU_QUIESCED is turned off. + * + * CPU_FROZEN is used only by CPR to mark CPUs that have been successfully + * suspended (in the suspend path), or have yet to be resumed (in the resume + * case). + * + * On some platforms CPUs can be individually powered off. + * The following flags are set for powered off CPUs: CPU_QUIESCED, + * CPU_OFFLINE, and CPU_POWEROFF. The following flags are cleared: + * CPU_RUNNING, CPU_READY, CPU_EXISTS, and CPU_ENABLE. + */ +#define CPU_RUNNING 0x001 /* CPU running */ +#define CPU_READY 0x002 /* CPU ready for cross-calls */ +#define CPU_QUIESCED 0x004 /* CPU will stay in idle */ +#define CPU_EXISTS 0x008 /* CPU is configured */ +#define CPU_ENABLE 0x010 /* CPU enabled for interrupts */ +#define CPU_OFFLINE 0x020 /* CPU offline via p_online */ +#define CPU_POWEROFF 0x040 /* CPU is powered off */ +#define CPU_FROZEN 0x080 /* CPU is frozen via CPR suspend */ +#define CPU_SPARE 0x100 /* CPU offline available for use */ +#define CPU_FAULTED 0x200 /* CPU offline diagnosed faulty */ + +#define FMT_CPU_FLAGS \ + "\20\12fault\11spare\10frozen" \ + "\7poweroff\6offline\5enable\4exist\3quiesced\2ready\1run" + +#define CPU_ACTIVE(cpu) (((cpu)->cpu_flags & CPU_OFFLINE) == 0) + +/* + * Flags for cpu_offline(), cpu_faulted(), and cpu_spare(). + */ +#define CPU_FORCED 0x0001 /* Force CPU offline */ + +/* + * DTrace flags. + */ +#define CPU_DTRACE_NOFAULT 0x0001 /* Don't fault */ +#define CPU_DTRACE_DROP 0x0002 /* Drop this ECB */ +#define CPU_DTRACE_BADADDR 0x0004 /* DTrace fault: bad address */ +#define CPU_DTRACE_BADALIGN 0x0008 /* DTrace fault: bad alignment */ +#define CPU_DTRACE_DIVZERO 0x0010 /* DTrace fault: divide by zero */ +#define CPU_DTRACE_ILLOP 0x0020 /* DTrace fault: illegal operation */ +#define CPU_DTRACE_NOSCRATCH 0x0040 /* DTrace fault: out of scratch */ +#define CPU_DTRACE_KPRIV 0x0080 /* DTrace fault: bad kernel access */ +#define CPU_DTRACE_UPRIV 0x0100 /* DTrace fault: bad user access */ +#define CPU_DTRACE_TUPOFLOW 0x0200 /* DTrace fault: tuple stack overflow */ +#if defined(__sparc) +#define CPU_DTRACE_FAKERESTORE 0x0400 /* pid provider hint to getreg */ +#endif +#define CPU_DTRACE_ENTRY 0x0800 /* pid provider hint to ustack() */ +#define CPU_DTRACE_BADSTACK 0x1000 /* DTrace fault: bad stack */ + +#define CPU_DTRACE_FAULT (CPU_DTRACE_BADADDR | CPU_DTRACE_BADALIGN | \ + CPU_DTRACE_DIVZERO | CPU_DTRACE_ILLOP | \ + CPU_DTRACE_NOSCRATCH | CPU_DTRACE_KPRIV | \ + CPU_DTRACE_UPRIV | CPU_DTRACE_TUPOFLOW | \ + CPU_DTRACE_BADSTACK) +#define CPU_DTRACE_ERROR (CPU_DTRACE_FAULT | CPU_DTRACE_DROP) + +/* + * Dispatcher flags + * These flags must be changed only by the current CPU. + */ +#define CPU_DISP_DONTSTEAL 0x01 /* CPU undergoing context swtch */ +#define CPU_DISP_HALTED 0x02 /* CPU halted waiting for interrupt */ + + +#endif /* _KERNEL || _KMEMUSER */ + +#if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP) + +/* + * Macros for manipulating sets of CPUs as a bitmap. Note that this + * bitmap may vary in size depending on the maximum CPU id a specific + * platform supports. This may be different than the number of CPUs + * the platform supports, since CPU ids can be sparse. We define two + * sets of macros; one for platforms where the maximum CPU id is less + * than the number of bits in a single word (32 in a 32-bit kernel, + * 64 in a 64-bit kernel), and one for platforms that require bitmaps + * of more than one word. + */ + +#define CPUSET_WORDS BT_BITOUL(NCPU) +#define CPUSET_NOTINSET ((uint_t)-1) + +#if CPUSET_WORDS > 1 + +typedef struct cpuset { + ulong_t cpub[CPUSET_WORDS]; +} cpuset_t; + +/* + * Private functions for manipulating cpusets that do not fit in a + * single word. These should not be used directly; instead the + * CPUSET_* macros should be used so the code will be portable + * across different definitions of NCPU. + */ +extern void cpuset_all(cpuset_t *); +extern void cpuset_all_but(cpuset_t *, uint_t); +extern int cpuset_isnull(cpuset_t *); +extern int cpuset_cmp(cpuset_t *, cpuset_t *); +extern void cpuset_only(cpuset_t *, uint_t); +extern uint_t cpuset_find(cpuset_t *); +extern void cpuset_bounds(cpuset_t *, uint_t *, uint_t *); + +#define CPUSET_ALL(set) cpuset_all(&(set)) +#define CPUSET_ALL_BUT(set, cpu) cpuset_all_but(&(set), cpu) +#define CPUSET_ONLY(set, cpu) cpuset_only(&(set), cpu) +#define CPU_IN_SET(set, cpu) BT_TEST((set).cpub, cpu) +#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 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 processorid_t max_cpuid; /* maximum CPU number */ +extern struct cpu *cpu_inmotion; /* offline or partition move target */ +extern cpu_t *clock_cpu_list; + +#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) + +#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_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); +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 */ + +typedef enum { + CPU_INIT, + CPU_CONFIG, + CPU_UNCONFIG, + CPU_ON, + CPU_OFF, + CPU_CPUPART_IN, + CPU_CPUPART_OUT +} 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); + +/* + * 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 cpu_vm_data_init(struct cpu *); +extern void cpu_vm_data_destroy(struct cpu *); + +#endif /* _KERNEL */ + +#ifdef __cplusplus +} +#endif + +#endif /* _SYS_CPUVAR_H */ |
