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/*
* 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 (c) 1989, 2010, Oracle and/or its affiliates. All rights reserved.
*/
#ifndef _SYS_CPUVAR_H
#define _SYS_CPUVAR_H
#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_counter; /* 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 */
uintptr_t cpu_cpcprofile_pc; /* kernel PC in cpc interrupt */
uintptr_t cpu_cpcprofile_upc; /* user PC in cpc interrupt */
/*
* Interrupt load factor used by dispatcher & softcall
*/
hrtime_t cpu_intrlast; /* total interrupt time (nsec) */
int cpu_intrload; /* interrupt load factor (0-99%) */
uint_t cpu_rotor; /* for cheap pseudo-random numbers */
struct cu_cpu_info *cpu_cu_info; /* capacity & util. info */
/*
* cpu_generation is updated whenever CPU goes on-line or off-line.
* Updates to cpu_generation are protected by cpu_lock.
*
* See CPU_NEW_GENERATION() macro below.
*/
volatile uint_t cpu_generation; /* tracking on/off-line */
/*
* 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 (uint8_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_dcpc_intr_state; /* DCPC provider intr state */
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))
/*
* Check to see if an interrupt thread might be active at a given ipl.
* If so return true.
* We must be conservative--it is ok to give a false yes, but a false no
* will cause disaster. (But if the situation changes after we check it is
* ok--the caller is trying to ensure that an interrupt routine has been
* exited).
* This is used when trying to remove an interrupt handler from an autovector
* list in avintr.c.
*/
#define INTR_ACTIVE(cpup, level) \
((level) <= LOCK_LEVEL ? \
((cpup)->cpu_intr_actv & (1 << (level))) : (CPU_ON_INTR(cpup)))
/*
* CPU_PSEUDO_RANDOM() returns a per CPU value that changes each time one
* looks at it. It's meant as a cheap mechanism to be incorporated in routines
* wanting to avoid biasing, but where true randomness isn't needed (just
* something that changes).
*/
#define CPU_PSEUDO_RANDOM() (CPU->cpu_rotor++)
#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 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 */