4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
30 #pragma ident "%Z%%M% %I% %E% SMI"
32 #include <sys/thread.h>
33 #include <sys/sysinfo.h> /* has cpu_stat_t definition */
35 #include <sys/processor.h>
37 #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP)
38 #include <sys/machcpuvar.h>
41 #include <sys/types.h>
43 #include <sys/bitmap.h>
44 #include <sys/rwlock.h>
45 #include <sys/msacct.h>
46 #if defined(__GNUC__) && defined(_ASM_INLINES) && defined(_KERNEL) && \
47 (defined(__i386) || defined(__amd64))
48 #include <asm/cpuvar.h>
57 #define CPU_CACHE_COHERENCE_SIZE 64
58 #define S_LOADAVG_SZ 11
59 #define S_MOVAVG_SZ 10
62 int lg_cur; /* current loadavg entry */
63 unsigned int lg_len; /* number entries recorded */
64 hrtime_t lg_total; /* used to temporarily hold load totals */
65 hrtime_t lg_loads[S_LOADAVG_SZ]; /* table of recorded entries */
69 * For fast event tracing.
72 typedef struct ftrace_data {
73 int ftd_state; /* ftrace flags */
74 kmutex_t ftd_unused; /* ftrace buffer lock, unused */
75 struct ftrace_record *ftd_cur; /* current record */
76 struct ftrace_record *ftd_first; /* first record */
77 struct ftrace_record *ftd_last; /* last record */
86 * Be careful adding new members: if they are not the same in all modules (e.g.
87 * change size depending on a #define), CTF uniquification can fail to work
88 * properly. Furthermore, this is transitive in that it applies recursively to
89 * all types pointed to by cpu_t.
92 processorid_t cpu_id; /* CPU number */
93 processorid_t cpu_seqid; /* sequential CPU id (0..ncpus-1) */
94 volatile cpu_flag_t cpu_flags; /* flags indicating CPU state */
95 struct cpu *cpu_self; /* pointer to itself */
96 kthread_t *cpu_thread; /* current thread */
97 kthread_t *cpu_idle_thread; /* idle thread for this CPU */
98 kthread_t *cpu_pause_thread; /* pause thread for this CPU */
99 klwp_id_t cpu_lwp; /* current lwp (if any) */
100 klwp_id_t cpu_fpowner; /* currently loaded fpu owner */
101 struct cpupart *cpu_part; /* partition with this CPU */
102 struct lgrp_ld *cpu_lpl; /* pointer to this cpu's load */
103 int cpu_cache_offset; /* see kmem.c for details */
106 * Links to other CPUs. It is safe to walk these lists if
107 * one of the following is true:
109 * - preemption disabled via kpreempt_disable
110 * - PIL >= DISP_LEVEL
111 * - acting thread is an interrupt thread
112 * - all other CPUs are paused
114 struct cpu *cpu_next; /* next existing CPU */
115 struct cpu *cpu_prev; /* prev existing CPU */
116 struct cpu *cpu_next_onln; /* next online (enabled) CPU */
117 struct cpu *cpu_prev_onln; /* prev online (enabled) CPU */
118 struct cpu *cpu_next_part; /* next CPU in partition */
119 struct cpu *cpu_prev_part; /* prev CPU in partition */
120 struct cpu *cpu_next_lgrp; /* next CPU in latency group */
121 struct cpu *cpu_prev_lgrp; /* prev CPU in latency group */
122 struct cpu *cpu_next_lpl; /* next CPU in lgrp partition */
123 struct cpu *cpu_prev_lpl;
125 struct cpu_pg *cpu_pg; /* cpu's processor groups */
127 void *cpu_reserved[4]; /* reserved for future use */
130 * Scheduling variables.
132 disp_t *cpu_disp; /* dispatch queue data */
134 * Note that cpu_disp is set before the CPU is added to the system
135 * and is never modified. Hence, no additional locking is needed
136 * beyond what's necessary to access the cpu_t structure.
138 char cpu_runrun; /* scheduling flag - set to preempt */
139 char cpu_kprunrun; /* force kernel preemption */
140 pri_t cpu_chosen_level; /* priority at which cpu */
141 /* was chosen for scheduling */
142 kthread_t *cpu_dispthread; /* thread selected for dispatch */
143 disp_lock_t cpu_thread_lock; /* dispatcher lock on current thread */
144 uint8_t cpu_disp_flags; /* flags used by dispatcher */
146 * The following field is updated when ever the cpu_dispthread
147 * changes. Also in places, where the current thread(cpu_dispthread)
148 * priority changes. This is used in disp_lowpri_cpu()
150 pri_t cpu_dispatch_pri; /* priority of cpu_dispthread */
151 clock_t cpu_last_swtch; /* last time switched to new thread */
156 caddr_t cpu_intr_stack; /* interrupt stack */
157 kthread_t *cpu_intr_thread; /* interrupt thread list */
158 uint_t cpu_intr_actv; /* interrupt levels active (bitmask) */
159 int cpu_base_spl; /* priority for highest rupt active */
164 cpu_stats_t cpu_stats; /* per-CPU statistics */
165 struct kstat *cpu_info_kstat; /* kstat for cpu info */
167 uintptr_t cpu_profile_pc; /* kernel PC in profile interrupt */
168 uintptr_t cpu_profile_upc; /* user PC in profile interrupt */
169 uintptr_t cpu_profile_pil; /* PIL when profile interrupted */
171 ftrace_data_t cpu_ftrace; /* per cpu ftrace data */
173 clock_t cpu_deadman_lbolt; /* used by deadman() */
174 uint_t cpu_deadman_countdown; /* used by deadman() */
176 kmutex_t cpu_cpc_ctxlock; /* protects context for idle thread */
177 kcpc_ctx_t *cpu_cpc_ctx; /* performance counter context */
180 * Configuration information for the processor_info system call.
182 processor_info_t cpu_type_info; /* config info */
183 time_t cpu_state_begin; /* when CPU entered current state */
184 char cpu_cpr_flags; /* CPR related info */
185 struct cyc_cpu *cpu_cyclic; /* per cpu cyclic subsystem data */
186 struct squeue_set_s *cpu_squeue_set; /* per cpu squeue set */
187 struct nvlist *cpu_props; /* pool-related properties */
189 krwlock_t cpu_ft_lock; /* DTrace: fasttrap lock */
190 uintptr_t cpu_dtrace_caller; /* DTrace: caller, if any */
191 hrtime_t cpu_dtrace_chillmark; /* DTrace: chill mark time */
192 hrtime_t cpu_dtrace_chilled; /* DTrace: total chill time */
193 volatile uint16_t cpu_mstate; /* cpu microstate */
194 volatile uint16_t cpu_mstate_gen; /* generation counter */
195 volatile hrtime_t cpu_mstate_start; /* cpu microstate start time */
196 volatile hrtime_t cpu_acct[NCMSTATES]; /* cpu microstate data */
197 hrtime_t cpu_intracct[NCMSTATES]; /* interrupt mstate data */
198 hrtime_t cpu_waitrq; /* cpu run-queue wait time */
199 struct loadavg_s cpu_loadavg; /* loadavg info for this cpu */
201 char *cpu_idstr; /* for printing and debugging */
202 char *cpu_brandstr; /* for printing */
205 * Sum of all device interrupt weights that are currently directed at
206 * this cpu. Cleared at start of interrupt redistribution.
208 int32_t cpu_intr_weight;
211 struct cpu_physid *cpu_physid; /* physical associations */
213 uint64_t cpu_curr_clock; /* current clock freq in Hz */
214 char *cpu_supp_freqs; /* supported freqs in Hz */
217 * Interrupt load factor used by dispatcher & softcall
219 hrtime_t cpu_intrlast; /* total interrupt time (nsec) */
220 int cpu_intrload; /* interrupt load factor (0-99%) */
223 * New members must be added /before/ this member, as the CTF tools
224 * rely on this being the last field before cpu_m, so they can
225 * correctly calculate the offset when synthetically adding the cpu_m
226 * member in objects that do not have it. This fixup is required for
227 * uniquification to work correctly.
231 #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP)
232 struct machcpu cpu_m; /* per architecture info */
237 * The cpu_core structure consists of per-CPU state available in any context.
238 * On some architectures, this may mean that the page(s) containing the
239 * NCPU-sized array of cpu_core structures must be locked in the TLB -- it
240 * is up to the platform to assure that this is performed properly. Note that
241 * the structure is sized to avoid false sharing.
243 #define CPUC_SIZE (sizeof (uint16_t) + sizeof (uintptr_t) + \
245 #define CPUC_PADSIZE CPU_CACHE_COHERENCE_SIZE - CPUC_SIZE
247 typedef struct cpu_core {
248 uint16_t cpuc_dtrace_flags; /* DTrace flags */
249 uint8_t cpuc_pad[CPUC_PADSIZE]; /* padding */
250 uintptr_t cpuc_dtrace_illval; /* DTrace illegal value */
251 kmutex_t cpuc_pid_lock; /* DTrace pid provider lock */
255 extern cpu_core_t cpu_core[];
259 * CPU_ON_INTR() macro. Returns non-zero if currently on interrupt stack.
260 * Note that this isn't a test for a high PIL. For example, cpu_intr_actv
261 * does not get updated when we go through sys_trap from TL>0 at high PIL.
262 * getpil() should be used instead to check for PIL levels.
264 #define CPU_ON_INTR(cpup) ((cpup)->cpu_intr_actv >> (LOCK_LEVEL + 1))
266 #if defined(_KERNEL) || defined(_KMEMUSER)
268 #define INTR_STACK_SIZE MAX(DEFAULTSTKSZ, PAGESIZE)
270 /* MEMBERS PROTECTED BY "atomicity": cpu_flags */
273 * Flags in the CPU structure.
275 * These are protected by cpu_lock (except during creation).
277 * Offlined-CPUs have three stages of being offline:
279 * CPU_ENABLE indicates that the CPU is participating in I/O interrupts
280 * that can be directed at a number of different CPUs. If CPU_ENABLE
281 * is off, the CPU will not be given interrupts that can be sent elsewhere,
282 * but will still get interrupts from devices associated with that CPU only,
283 * and from other CPUs.
285 * CPU_OFFLINE indicates that the dispatcher should not allow any threads
286 * other than interrupt threads to run on that CPU. A CPU will not have
287 * CPU_OFFLINE set if there are any bound threads (besides interrupts).
289 * CPU_QUIESCED is set if p_offline was able to completely turn idle the
290 * CPU and it will not have to run interrupt threads. In this case it'll
291 * stay in the idle loop until CPU_QUIESCED is turned off.
293 * CPU_FROZEN is used only by CPR to mark CPUs that have been successfully
294 * suspended (in the suspend path), or have yet to be resumed (in the resume
297 * On some platforms CPUs can be individually powered off.
298 * The following flags are set for powered off CPUs: CPU_QUIESCED,
299 * CPU_OFFLINE, and CPU_POWEROFF. The following flags are cleared:
300 * CPU_RUNNING, CPU_READY, CPU_EXISTS, and CPU_ENABLE.
302 #define CPU_RUNNING 0x001 /* CPU running */
303 #define CPU_READY 0x002 /* CPU ready for cross-calls */
304 #define CPU_QUIESCED 0x004 /* CPU will stay in idle */
305 #define CPU_EXISTS 0x008 /* CPU is configured */
306 #define CPU_ENABLE 0x010 /* CPU enabled for interrupts */
307 #define CPU_OFFLINE 0x020 /* CPU offline via p_online */
308 #define CPU_POWEROFF 0x040 /* CPU is powered off */
309 #define CPU_FROZEN 0x080 /* CPU is frozen via CPR suspend */
310 #define CPU_SPARE 0x100 /* CPU offline available for use */
311 #define CPU_FAULTED 0x200 /* CPU offline diagnosed faulty */
313 #define FMT_CPU_FLAGS \
314 "\20\12fault\11spare\10frozen" \
315 "\7poweroff\6offline\5enable\4exist\3quiesced\2ready\1run"
317 #define CPU_ACTIVE(cpu) (((cpu)->cpu_flags & CPU_OFFLINE) == 0)
320 * Flags for cpu_offline(), cpu_faulted(), and cpu_spare().
322 #define CPU_FORCED 0x0001 /* Force CPU offline */
327 #define CPU_DTRACE_NOFAULT 0x0001 /* Don't fault */
328 #define CPU_DTRACE_DROP 0x0002 /* Drop this ECB */
329 #define CPU_DTRACE_BADADDR 0x0004 /* DTrace fault: bad address */
330 #define CPU_DTRACE_BADALIGN 0x0008 /* DTrace fault: bad alignment */
331 #define CPU_DTRACE_DIVZERO 0x0010 /* DTrace fault: divide by zero */
332 #define CPU_DTRACE_ILLOP 0x0020 /* DTrace fault: illegal operation */
333 #define CPU_DTRACE_NOSCRATCH 0x0040 /* DTrace fault: out of scratch */
334 #define CPU_DTRACE_KPRIV 0x0080 /* DTrace fault: bad kernel access */
335 #define CPU_DTRACE_UPRIV 0x0100 /* DTrace fault: bad user access */
336 #define CPU_DTRACE_TUPOFLOW 0x0200 /* DTrace fault: tuple stack overflow */
338 #define CPU_DTRACE_FAKERESTORE 0x0400 /* pid provider hint to getreg */
340 #define CPU_DTRACE_ENTRY 0x0800 /* pid provider hint to ustack() */
341 #define CPU_DTRACE_BADSTACK 0x1000 /* DTrace fault: bad stack */
343 #define CPU_DTRACE_FAULT (CPU_DTRACE_BADADDR | CPU_DTRACE_BADALIGN | \
344 CPU_DTRACE_DIVZERO | CPU_DTRACE_ILLOP | \
345 CPU_DTRACE_NOSCRATCH | CPU_DTRACE_KPRIV | \
346 CPU_DTRACE_UPRIV | CPU_DTRACE_TUPOFLOW | \
348 #define CPU_DTRACE_ERROR (CPU_DTRACE_FAULT | CPU_DTRACE_DROP)
352 * These flags must be changed only by the current CPU.
354 #define CPU_DISP_DONTSTEAL 0x01 /* CPU undergoing context swtch */
355 #define CPU_DISP_HALTED 0x02 /* CPU halted waiting for interrupt */
358 #endif /* _KERNEL || _KMEMUSER */
360 #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP)
363 * Macros for manipulating sets of CPUs as a bitmap. Note that this
364 * bitmap may vary in size depending on the maximum CPU id a specific
365 * platform supports. This may be different than the number of CPUs
366 * the platform supports, since CPU ids can be sparse. We define two
367 * sets of macros; one for platforms where the maximum CPU id is less
368 * than the number of bits in a single word (32 in a 32-bit kernel,
369 * 64 in a 64-bit kernel), and one for platforms that require bitmaps
370 * of more than one word.
373 #define CPUSET_WORDS BT_BITOUL(NCPU)
374 #define CPUSET_NOTINSET ((uint_t)-1)
378 typedef struct cpuset {
379 ulong_t cpub[CPUSET_WORDS];
383 * Private functions for manipulating cpusets that do not fit in a
384 * single word. These should not be used directly; instead the
385 * CPUSET_* macros should be used so the code will be portable
386 * across different definitions of NCPU.
388 extern void cpuset_all(cpuset_t *);
389 extern void cpuset_all_but(cpuset_t *, uint_t);
390 extern int cpuset_isnull(cpuset_t *);
391 extern int cpuset_cmp(cpuset_t *, cpuset_t *);
392 extern void cpuset_only(cpuset_t *, uint_t);
393 extern uint_t cpuset_find(cpuset_t *);
394 extern void cpuset_bounds(cpuset_t *, uint_t *, uint_t *);
396 #define CPUSET_ALL(set) cpuset_all(&(set))
397 #define CPUSET_ALL_BUT(set, cpu) cpuset_all_but(&(set), cpu)
398 #define CPUSET_ONLY(set, cpu) cpuset_only(&(set), cpu)
399 #define CPU_IN_SET(set, cpu) BT_TEST((set).cpub, cpu)
400 #define CPUSET_ADD(set, cpu) BT_SET((set).cpub, cpu)
401 #define CPUSET_DEL(set, cpu) BT_CLEAR((set).cpub, cpu)
402 #define CPUSET_ISNULL(set) cpuset_isnull(&(set))
403 #define CPUSET_ISEQUAL(set1, set2) cpuset_cmp(&(set1), &(set2))
406 * Find one CPU in the cpuset.
407 * Sets "cpu" to the id of the found CPU, or CPUSET_NOTINSET if no cpu
408 * could be found. (i.e. empty set)
410 #define CPUSET_FIND(set, cpu) { \
411 cpu = cpuset_find(&(set)); \
415 * Determine the smallest and largest CPU id in the set. Returns
416 * CPUSET_NOTINSET in smallest and largest when set is empty.
418 #define CPUSET_BOUNDS(set, smallest, largest) { \
419 cpuset_bounds(&(set), &(smallest), &(largest)); \
423 * Atomic cpuset operations
424 * These are safe to use for concurrent cpuset manipulations.
425 * "xdel" and "xadd" are exclusive operations, that set "result" to "0"
426 * if the add or del was successful, or "-1" if not successful.
427 * (e.g. attempting to add a cpu to a cpuset that's already there, or
428 * deleting a cpu that's not in the cpuset)
431 #define CPUSET_ATOMIC_DEL(set, cpu) BT_ATOMIC_CLEAR((set).cpub, (cpu))
432 #define CPUSET_ATOMIC_ADD(set, cpu) BT_ATOMIC_SET((set).cpub, (cpu))
434 #define CPUSET_ATOMIC_XADD(set, cpu, result) \
435 BT_ATOMIC_SET_EXCL((set).cpub, cpu, result)
437 #define CPUSET_ATOMIC_XDEL(set, cpu, result) \
438 BT_ATOMIC_CLEAR_EXCL((set).cpub, cpu, result)
441 #define CPUSET_OR(set1, set2) { \
443 for (_i = 0; _i < CPUSET_WORDS; _i++) \
444 (set1).cpub[_i] |= (set2).cpub[_i]; \
447 #define CPUSET_XOR(set1, set2) { \
449 for (_i = 0; _i < CPUSET_WORDS; _i++) \
450 (set1).cpub[_i] ^= (set2).cpub[_i]; \
453 #define CPUSET_AND(set1, set2) { \
455 for (_i = 0; _i < CPUSET_WORDS; _i++) \
456 (set1).cpub[_i] &= (set2).cpub[_i]; \
459 #define CPUSET_ZERO(set) { \
461 for (_i = 0; _i < CPUSET_WORDS; _i++) \
462 (set).cpub[_i] = 0; \
465 #elif CPUSET_WORDS == 1
467 typedef ulong_t cpuset_t; /* a set of CPUs */
469 #define CPUSET(cpu) (1UL << (cpu))
471 #define CPUSET_ALL(set) ((void)((set) = ~0UL))
472 #define CPUSET_ALL_BUT(set, cpu) ((void)((set) = ~CPUSET(cpu)))
473 #define CPUSET_ONLY(set, cpu) ((void)((set) = CPUSET(cpu)))
474 #define CPU_IN_SET(set, cpu) ((set) & CPUSET(cpu))
475 #define CPUSET_ADD(set, cpu) ((void)((set) |= CPUSET(cpu)))
476 #define CPUSET_DEL(set, cpu) ((void)((set) &= ~CPUSET(cpu)))
477 #define CPUSET_ISNULL(set) ((set) == 0)
478 #define CPUSET_ISEQUAL(set1, set2) ((set1) == (set2))
479 #define CPUSET_OR(set1, set2) ((void)((set1) |= (set2)))
480 #define CPUSET_XOR(set1, set2) ((void)((set1) ^= (set2)))
481 #define CPUSET_AND(set1, set2) ((void)((set1) &= (set2)))
482 #define CPUSET_ZERO(set) ((void)((set) = 0))
484 #define CPUSET_FIND(set, cpu) { \
485 cpu = (uint_t)(lowbit(set) - 1); \
488 #define CPUSET_BOUNDS(set, smallest, largest) { \
489 smallest = (uint_t)(lowbit(set) - 1); \
490 largest = (uint_t)(highbit(set) - 1); \
493 #define CPUSET_ATOMIC_DEL(set, cpu) atomic_and_long(&(set), ~CPUSET(cpu))
494 #define CPUSET_ATOMIC_ADD(set, cpu) atomic_or_long(&(set), CPUSET(cpu))
496 #define CPUSET_ATOMIC_XADD(set, cpu, result) \
497 { result = atomic_set_long_excl(&(set), (cpu)); }
499 #define CPUSET_ATOMIC_XDEL(set, cpu, result) \
500 { result = atomic_clear_long_excl(&(set), (cpu)); }
502 #else /* CPUSET_WORDS <= 0 */
504 #error NCPU is undefined or invalid
506 #endif /* CPUSET_WORDS */
508 extern cpuset_t cpu_seqid_inuse;
510 #endif /* (_KERNEL || _KMEMUSER) && _MACHDEP */
512 #define CPU_CPR_OFFLINE 0x0
513 #define CPU_CPR_ONLINE 0x1
514 #define CPU_CPR_IS_OFFLINE(cpu) (((cpu)->cpu_cpr_flags & CPU_CPR_ONLINE) == 0)
515 #define CPU_CPR_IS_ONLINE(cpu) ((cpu)->cpu_cpr_flags & CPU_CPR_ONLINE)
516 #define CPU_SET_CPR_FLAGS(cpu, flag) ((cpu)->cpu_cpr_flags |= flag)
518 #if defined(_KERNEL) || defined(_KMEMUSER)
520 extern struct cpu *cpu[]; /* indexed by CPU number */
521 extern cpu_t *cpu_list; /* list of CPUs */
522 extern cpu_t *cpu_active; /* list of active CPUs */
523 extern int ncpus; /* number of CPUs present */
524 extern int ncpus_online; /* number of CPUs not quiesced */
525 extern int max_ncpus; /* max present before ncpus is known */
526 extern int boot_max_ncpus; /* like max_ncpus but for real */
527 extern processorid_t max_cpuid; /* maximum CPU number */
528 extern struct cpu *cpu_inmotion; /* offline or partition move target */
529 extern cpu_t *clock_cpu_list;
531 #if defined(__i386) || defined(__amd64)
532 extern struct cpu *curcpup(void);
533 #define CPU (curcpup()) /* Pointer to current CPU */
535 #define CPU (curthread->t_cpu) /* Pointer to current CPU */
539 * CPU_CURRENT indicates to thread_affinity_set to use CPU->cpu_id
540 * as the target and to grab cpu_lock instead of requiring the caller
543 #define CPU_CURRENT -3
548 * cpu_stats_t contains numerous system and VM-related statistics, in the form
549 * of gauges or monotonically-increasing event occurrence counts.
552 #define CPU_STATS_ENTER_K() kpreempt_disable()
553 #define CPU_STATS_EXIT_K() kpreempt_enable()
555 #define CPU_STATS_ADD_K(class, stat, amount) \
556 { kpreempt_disable(); /* keep from switching CPUs */\
557 CPU_STATS_ADDQ(CPU, class, stat, amount); \
561 #define CPU_STATS_ADDQ(cp, class, stat, amount) { \
562 extern void __dtrace_probe___cpu_##class##info_##stat(uint_t, \
563 uint64_t *, cpu_t *); \
564 uint64_t *stataddr = &((cp)->cpu_stats.class.stat); \
565 __dtrace_probe___cpu_##class##info_##stat((amount), \
567 *(stataddr) += (amount); \
570 #define CPU_STATS(cp, stat) \
571 ((cp)->cpu_stats.stat)
573 #endif /* _KERNEL || _KMEMUSER */
576 * CPU support routines.
578 #if defined(_KERNEL) && defined(__STDC__) /* not for genassym.c */
582 void cpu_list_init(cpu_t *);
583 void cpu_add_unit(cpu_t *);
584 void cpu_del_unit(int cpuid);
585 void cpu_add_active(cpu_t *);
586 void cpu_kstat_init(cpu_t *);
587 void cpu_visibility_add(cpu_t *, struct zone *);
588 void cpu_visibility_remove(cpu_t *, struct zone *);
589 void cpu_visibility_configure(cpu_t *, struct zone *);
590 void cpu_visibility_unconfigure(cpu_t *, struct zone *);
591 void cpu_visibility_online(cpu_t *, struct zone *);
592 void cpu_visibility_offline(cpu_t *, struct zone *);
593 void cpu_create_intrstat(cpu_t *);
594 void cpu_delete_intrstat(cpu_t *);
595 int cpu_kstat_intrstat_update(kstat_t *, int);
596 void cpu_intr_swtch_enter(kthread_t *);
597 void cpu_intr_swtch_exit(kthread_t *);
599 void mbox_lock_init(void); /* initialize cross-call locks */
600 void mbox_init(int cpun); /* initialize cross-calls */
601 void poke_cpu(int cpun); /* interrupt another CPU (to preempt) */
604 * values for safe_list. Pause state that CPUs are in.
606 #define PAUSE_IDLE 0 /* normal state */
607 #define PAUSE_READY 1 /* paused thread ready to spl */
608 #define PAUSE_WAIT 2 /* paused thread is spl-ed high */
609 #define PAUSE_DIE 3 /* tell pause thread to leave */
610 #define PAUSE_DEAD 4 /* pause thread has left */
612 void mach_cpu_pause(volatile char *);
614 void pause_cpus(cpu_t *off_cp);
615 void start_cpus(void);
616 int cpus_paused(void);
618 void cpu_pause_init(void);
619 cpu_t *cpu_get(processorid_t cpun); /* get the CPU struct associated */
621 int cpu_online(cpu_t *cp); /* take cpu online */
622 int cpu_offline(cpu_t *cp, int flags); /* take cpu offline */
623 int cpu_spare(cpu_t *cp, int flags); /* take cpu to spare */
624 int cpu_faulted(cpu_t *cp, int flags); /* take cpu to faulted */
625 int cpu_poweron(cpu_t *cp); /* take powered-off cpu to offline */
626 int cpu_poweroff(cpu_t *cp); /* take offline cpu to powered-off */
628 cpu_t *cpu_intr_next(cpu_t *cp); /* get next online CPU taking intrs */
629 int cpu_intr_count(cpu_t *cp); /* count # of CPUs handling intrs */
630 int cpu_intr_on(cpu_t *cp); /* CPU taking I/O interrupts? */
631 void cpu_intr_enable(cpu_t *cp); /* enable I/O interrupts */
632 int cpu_intr_disable(cpu_t *cp); /* disable I/O interrupts */
633 void cpu_intr_alloc(cpu_t *cp, int n); /* allocate interrupt threads */
636 * Routines for checking CPU states.
638 int cpu_is_online(cpu_t *); /* check if CPU is online */
639 int cpu_is_nointr(cpu_t *); /* check if CPU can service intrs */
640 int cpu_is_active(cpu_t *); /* check if CPU can run threads */
641 int cpu_is_offline(cpu_t *); /* check if CPU is offline */
642 int cpu_is_poweredoff(cpu_t *); /* check if CPU is powered off */
644 int cpu_flagged_online(cpu_flag_t); /* flags show CPU is online */
645 int cpu_flagged_nointr(cpu_flag_t); /* flags show CPU not handling intrs */
646 int cpu_flagged_active(cpu_flag_t); /* flags show CPU scheduling threads */
647 int cpu_flagged_offline(cpu_flag_t); /* flags show CPU is offline */
648 int cpu_flagged_poweredoff(cpu_flag_t); /* flags show CPU is powered off */
651 * The processor_info(2) state of a CPU is a simplified representation suitable
652 * for use by an application program. Kernel subsystems should utilize the
653 * internal per-CPU state as given by the cpu_flags member of the cpu structure,
654 * as this information may include platform- or architecture-specific state
655 * critical to a subsystem's disposition of a particular CPU.
657 void cpu_set_state(cpu_t *); /* record/timestamp current state */
658 int cpu_get_state(cpu_t *); /* get current cpu state */
659 const char *cpu_get_state_str(cpu_t *); /* get current cpu state as string */
662 void cpu_set_supp_freqs(cpu_t *, const char *); /* set the CPU supported */
665 int cpu_configure(int);
666 int cpu_unconfigure(int);
667 void cpu_destroy_bound_threads(cpu_t *cp);
669 extern int cpu_bind_thread(kthread_t *tp, processorid_t bind,
670 processorid_t *obind, int *error);
671 extern int cpu_unbind(processorid_t cpu_id, boolean_t force);
672 extern void thread_affinity_set(kthread_t *t, int cpu_id);
673 extern void thread_affinity_clear(kthread_t *t);
674 extern void affinity_set(int cpu_id);
675 extern void affinity_clear(void);
676 extern void init_cpu_mstate(struct cpu *, int);
677 extern void term_cpu_mstate(struct cpu *);
678 extern void new_cpu_mstate(int, hrtime_t);
679 extern void get_cpu_mstate(struct cpu *, hrtime_t *);
680 extern void thread_nomigrate(void);
681 extern void thread_allowmigrate(void);
682 extern void weakbinding_stop(void);
683 extern void weakbinding_start(void);
686 * The following routines affect the CPUs participation in interrupt processing,
687 * if that is applicable on the architecture. This only affects interrupts
688 * which aren't directed at the processor (not cross calls).
690 * cpu_disable_intr returns non-zero if interrupts were previously enabled.
692 int cpu_disable_intr(struct cpu *cp); /* stop issuing interrupts to cpu */
693 void cpu_enable_intr(struct cpu *cp); /* start issuing interrupts to cpu */
696 * The mutex cpu_lock protects cpu_flags for all CPUs, as well as the ncpus
697 * and ncpus_online counts.
699 extern kmutex_t cpu_lock; /* lock protecting CPU data */
711 typedef int cpu_setup_func_t(cpu_setup_t, int, void *);
714 * Routines used to register interest in cpu's being added to or removed
717 extern void register_cpu_setup_func(cpu_setup_func_t *, void *);
718 extern void unregister_cpu_setup_func(cpu_setup_func_t *, void *);
719 extern void cpu_state_change_notify(int, cpu_setup_t);
722 * Create various strings that describe the given CPU for the
723 * processor_info system call and configuration-related kstats.
725 #define CPU_IDSTRLEN 100
727 extern void init_cpu_info(struct cpu *);
728 extern void cpu_vm_data_init(struct cpu *);
729 extern void cpu_vm_data_destroy(struct cpu *);
737 #endif /* _SYS_CPUVAR_H */