1 /* 2 * CDDL HEADER START 3 * 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. 7 * 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. 12 * 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] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _SYS_CPUVAR_H 28 #define _SYS_CPUVAR_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include <sys/thread.h> 33 #include <sys/sysinfo.h> /* has cpu_stat_t definition */ 34 #include <sys/disp.h> 35 #include <sys/processor.h> 36 37 #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP) 38 #include <sys/machcpuvar.h> 39 #endif 40 41 #include <sys/types.h> 42 #include <sys/file.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> 49 #endif 50 51 #ifdef __cplusplus 52 extern "C" { 53 #endif 54 55 struct squeue_set_s; 56 57 #define CPU_CACHE_COHERENCE_SIZE 64 58 #define S_LOADAVG_SZ 11 59 #define S_MOVAVG_SZ 10 60 61 struct loadavg_s { 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 */ 66 }; 67 68 /* 69 * For fast event tracing. 70 */ 71 struct ftrace_record; 72 typedef struct ftrace_data { 73 int ftd_state; /* ftrace flags */ 74 kmutex_t ftd_mutex; /* ftrace buffer lock */ 75 struct ftrace_record *ftd_cur; /* current record */ 76 struct ftrace_record *ftd_first; /* first record */ 77 struct ftrace_record *ftd_last; /* last record */ 78 } ftrace_data_t; 79 80 struct cyc_cpu; 81 struct nvlist; 82 83 /* 84 * Per-CPU data. 85 */ 86 typedef struct cpu { 87 processorid_t cpu_id; /* CPU number */ 88 processorid_t cpu_seqid; /* sequential CPU id (0..ncpus-1) */ 89 volatile cpu_flag_t cpu_flags; /* flags indicating CPU state */ 90 struct cpu *cpu_self; /* pointer to itself */ 91 kthread_t *cpu_thread; /* current thread */ 92 kthread_t *cpu_idle_thread; /* idle thread for this CPU */ 93 kthread_t *cpu_pause_thread; /* pause thread for this CPU */ 94 klwp_id_t cpu_lwp; /* current lwp (if any) */ 95 klwp_id_t cpu_fpowner; /* currently loaded fpu owner */ 96 struct cpupart *cpu_part; /* partition with this CPU */ 97 struct lgrp_ld *cpu_lpl; /* pointer to this cpu's load */ 98 struct chip *cpu_chip; /* cpu's chip data */ 99 int cpu_rechoose; /* cpu's rechoose_interval */ 100 int cpu_cache_offset; /* see kmem.c for details */ 101 102 /* 103 * Links to other CPUs. It is safe to walk these lists if 104 * one of the following is true: 105 * - cpu_lock held 106 * - preemption disabled via kpreempt_disable 107 * - PIL >= DISP_LEVEL 108 * - acting thread is an interrupt thread 109 * - all other CPUs are paused 110 */ 111 struct cpu *cpu_next; /* next existing CPU */ 112 struct cpu *cpu_prev; /* prev existing CPU */ 113 struct cpu *cpu_next_onln; /* next online (enabled) CPU */ 114 struct cpu *cpu_prev_onln; /* prev online (enabled) CPU */ 115 struct cpu *cpu_next_part; /* next CPU in partition */ 116 struct cpu *cpu_prev_part; /* prev CPU in partition */ 117 struct cpu *cpu_next_lgrp; /* next CPU in latency group */ 118 struct cpu *cpu_prev_lgrp; /* prev CPU in latency group */ 119 struct cpu *cpu_next_chip; /* next CPU on chip */ 120 struct cpu *cpu_prev_chip; /* prev CPU on chip */ 121 struct cpu *cpu_next_lpl; /* next CPU in lgrp partition */ 122 struct cpu *cpu_prev_lpl; 123 void *cpu_reserved[4]; /* reserved for future use */ 124 125 /* 126 * Scheduling variables. 127 */ 128 disp_t *cpu_disp; /* dispatch queue data */ 129 /* 130 * Note that cpu_disp is set before the CPU is added to the system 131 * and is never modified. Hence, no additional locking is needed 132 * beyond what's necessary to access the cpu_t structure. 133 */ 134 char cpu_runrun; /* scheduling flag - set to preempt */ 135 char cpu_kprunrun; /* force kernel preemption */ 136 pri_t cpu_chosen_level; /* priority at which cpu */ 137 /* was chosen for scheduling */ 138 kthread_t *cpu_dispthread; /* thread selected for dispatch */ 139 disp_lock_t cpu_thread_lock; /* dispatcher lock on current thread */ 140 uint8_t cpu_disp_flags; /* flags used by dispatcher */ 141 /* 142 * The following field is updated when ever the cpu_dispthread 143 * changes. Also in places, where the current thread(cpu_dispthread) 144 * priority changes. This is used in disp_lowpri_cpu() 145 */ 146 pri_t cpu_dispatch_pri; /* priority of cpu_dispthread */ 147 clock_t cpu_last_swtch; /* last time switched to new thread */ 148 149 /* 150 * Interrupt data. 151 */ 152 caddr_t cpu_intr_stack; /* interrupt stack */ 153 kthread_t *cpu_intr_thread; /* interrupt thread list */ 154 uint_t cpu_intr_actv; /* interrupt levels active (bitmask) */ 155 int cpu_base_spl; /* priority for highest rupt active */ 156 157 /* 158 * Statistics. 159 */ 160 cpu_stats_t cpu_stats; /* per-CPU statistics */ 161 struct kstat *cpu_info_kstat; /* kstat for cpu info */ 162 163 uintptr_t cpu_profile_pc; /* kernel PC in profile interrupt */ 164 uintptr_t cpu_profile_upc; /* user PC in profile interrupt */ 165 uintptr_t cpu_profile_pil; /* PIL when profile interrupted */ 166 167 ftrace_data_t cpu_ftrace; /* per cpu ftrace data */ 168 169 clock_t cpu_deadman_lbolt; /* used by deadman() */ 170 uint_t cpu_deadman_countdown; /* used by deadman() */ 171 172 kmutex_t cpu_cpc_ctxlock; /* protects context for idle thread */ 173 kcpc_ctx_t *cpu_cpc_ctx; /* performance counter context */ 174 175 /* 176 * Configuration information for the processor_info system call. 177 */ 178 processor_info_t cpu_type_info; /* config info */ 179 time_t cpu_state_begin; /* when CPU entered current state */ 180 char cpu_cpr_flags; /* CPR related info */ 181 struct cyc_cpu *cpu_cyclic; /* per cpu cyclic subsystem data */ 182 struct squeue_set_s *cpu_squeue_set; /* per cpu squeue set */ 183 struct nvlist *cpu_props; /* pool-related properties */ 184 185 krwlock_t cpu_ft_lock; /* DTrace: fasttrap lock */ 186 uintptr_t cpu_dtrace_caller; /* DTrace: caller, if any */ 187 hrtime_t cpu_dtrace_chillmark; /* DTrace: chill mark time */ 188 hrtime_t cpu_dtrace_chilled; /* DTrace: total chill time */ 189 volatile uint16_t cpu_mstate; /* cpu microstate */ 190 volatile uint16_t cpu_mstate_gen; /* generation counter */ 191 volatile hrtime_t cpu_mstate_start; /* cpu microstate start time */ 192 volatile hrtime_t cpu_acct[NCMSTATES]; /* cpu microstate data */ 193 hrtime_t cpu_intracct[NCMSTATES]; /* interrupt mstate data */ 194 hrtime_t cpu_waitrq; /* cpu run-queue wait time */ 195 struct loadavg_s cpu_loadavg; /* loadavg info for this cpu */ 196 197 char *cpu_idstr; /* for printing and debugging */ 198 char *cpu_brandstr; /* for printing */ 199 200 /* 201 * Sum of all device interrupt weights that are currently directed at 202 * this cpu. Cleared at start of interrupt redistribution. 203 */ 204 int32_t cpu_intr_weight; 205 void *cpu_vm_data; 206 207 #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP) 208 /* 209 * XXX - needs to be fixed. Structure size should not change. 210 * probably needs to be a pointer to an opaque structure. 211 * XXX - this is OK as long as cpu structs aren't in an array. 212 * A user program will either read the first part, 213 * which is machine-independent, or read the whole thing. 214 */ 215 struct machcpu cpu_m; /* per architecture info */ 216 #endif 217 } cpu_t; 218 219 /* 220 * The cpu_core structure consists of per-CPU state available in any context. 221 * On some architectures, this may mean that the page(s) containing the 222 * NCPU-sized array of cpu_core structures must be locked in the TLB -- it 223 * is up to the platform to assure that this is performed properly. Note that 224 * the structure is sized to avoid false sharing. 225 */ 226 #define CPUC_SIZE (sizeof (uint16_t) + sizeof (uintptr_t) + \ 227 sizeof (kmutex_t)) 228 #define CPUC_PADSIZE CPU_CACHE_COHERENCE_SIZE - CPUC_SIZE 229 230 typedef struct cpu_core { 231 uint16_t cpuc_dtrace_flags; /* DTrace flags */ 232 uint8_t cpuc_pad[CPUC_PADSIZE]; /* padding */ 233 uintptr_t cpuc_dtrace_illval; /* DTrace illegal value */ 234 kmutex_t cpuc_pid_lock; /* DTrace pid provider lock */ 235 } cpu_core_t; 236 237 #ifdef _KERNEL 238 extern cpu_core_t cpu_core[]; 239 #endif /* _KERNEL */ 240 241 /* 242 * CPU_ON_INTR() macro. Returns non-zero if currently on interrupt stack. 243 * Note that this isn't a test for a high PIL. For example, cpu_intr_actv 244 * does not get updated when we go through sys_trap from TL>0 at high PIL. 245 * getpil() should be used instead to check for PIL levels. 246 */ 247 #define CPU_ON_INTR(cpup) ((cpup)->cpu_intr_actv >> (LOCK_LEVEL + 1)) 248 249 #if defined(_KERNEL) || defined(_KMEMUSER) 250 251 #define INTR_STACK_SIZE MAX(DEFAULTSTKSZ, PAGESIZE) 252 253 /* MEMBERS PROTECTED BY "atomicity": cpu_flags */ 254 255 /* 256 * Flags in the CPU structure. 257 * 258 * These are protected by cpu_lock (except during creation). 259 * 260 * Offlined-CPUs have three stages of being offline: 261 * 262 * CPU_ENABLE indicates that the CPU is participating in I/O interrupts 263 * that can be directed at a number of different CPUs. If CPU_ENABLE 264 * is off, the CPU will not be given interrupts that can be sent elsewhere, 265 * but will still get interrupts from devices associated with that CPU only, 266 * and from other CPUs. 267 * 268 * CPU_OFFLINE indicates that the dispatcher should not allow any threads 269 * other than interrupt threads to run on that CPU. A CPU will not have 270 * CPU_OFFLINE set if there are any bound threads (besides interrupts). 271 * 272 * CPU_QUIESCED is set if p_offline was able to completely turn idle the 273 * CPU and it will not have to run interrupt threads. In this case it'll 274 * stay in the idle loop until CPU_QUIESCED is turned off. 275 * 276 * CPU_FROZEN is used only by CPR to mark CPUs that have been successfully 277 * suspended (in the suspend path), or have yet to be resumed (in the resume 278 * case). 279 * 280 * On some platforms CPUs can be individually powered off. 281 * The following flags are set for powered off CPUs: CPU_QUIESCED, 282 * CPU_OFFLINE, and CPU_POWEROFF. The following flags are cleared: 283 * CPU_RUNNING, CPU_READY, CPU_EXISTS, and CPU_ENABLE. 284 */ 285 #define CPU_RUNNING 0x001 /* CPU running */ 286 #define CPU_READY 0x002 /* CPU ready for cross-calls */ 287 #define CPU_QUIESCED 0x004 /* CPU will stay in idle */ 288 #define CPU_EXISTS 0x008 /* CPU is configured */ 289 #define CPU_ENABLE 0x010 /* CPU enabled for interrupts */ 290 #define CPU_OFFLINE 0x020 /* CPU offline via p_online */ 291 #define CPU_POWEROFF 0x040 /* CPU is powered off */ 292 #define CPU_FROZEN 0x080 /* CPU is frozen via CPR suspend */ 293 #define CPU_SPARE 0x100 /* CPU offline available for use */ 294 #define CPU_FAULTED 0x200 /* CPU offline diagnosed faulty */ 295 296 #define CPU_ACTIVE(cpu) (((cpu)->cpu_flags & CPU_OFFLINE) == 0) 297 298 /* 299 * Flags for cpu_offline(), cpu_faulted(), and cpu_spare(). 300 */ 301 #define CPU_FORCED 0x0001 /* Force CPU offline */ 302 303 /* 304 * DTrace flags. 305 */ 306 #define CPU_DTRACE_NOFAULT 0x0001 /* Don't fault */ 307 #define CPU_DTRACE_DROP 0x0002 /* Drop this ECB */ 308 #define CPU_DTRACE_BADADDR 0x0004 /* DTrace fault: bad address */ 309 #define CPU_DTRACE_BADALIGN 0x0008 /* DTrace fault: bad alignment */ 310 #define CPU_DTRACE_DIVZERO 0x0010 /* DTrace fault: divide by zero */ 311 #define CPU_DTRACE_ILLOP 0x0020 /* DTrace fault: illegal operation */ 312 #define CPU_DTRACE_NOSCRATCH 0x0040 /* DTrace fault: out of scratch */ 313 #define CPU_DTRACE_KPRIV 0x0080 /* DTrace fault: bad kernel access */ 314 #define CPU_DTRACE_UPRIV 0x0100 /* DTrace fault: bad user access */ 315 #define CPU_DTRACE_TUPOFLOW 0x0200 /* DTrace fault: tuple stack overflow */ 316 #if defined(__sparc) 317 #define CPU_DTRACE_FAKERESTORE 0x0400 /* pid provider hint to getreg */ 318 #endif 319 #define CPU_DTRACE_ENTRY 0x0800 /* pid provider hint to ustack() */ 320 321 #define CPU_DTRACE_FAULT (CPU_DTRACE_BADADDR | CPU_DTRACE_BADALIGN | \ 322 CPU_DTRACE_DIVZERO | CPU_DTRACE_ILLOP | \ 323 CPU_DTRACE_NOSCRATCH | CPU_DTRACE_KPRIV | \ 324 CPU_DTRACE_UPRIV | CPU_DTRACE_TUPOFLOW) 325 #define CPU_DTRACE_ERROR (CPU_DTRACE_FAULT | CPU_DTRACE_DROP) 326 327 /* 328 * Dispatcher flags 329 * These flags must be changed only by the current CPU. 330 */ 331 #define CPU_DISP_DONTSTEAL 0x01 /* CPU undergoing context swtch */ 332 #define CPU_DISP_HALTED 0x02 /* CPU halted waiting for interrupt */ 333 334 335 #endif /* _KERNEL || _KMEMUSER */ 336 337 #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP) 338 339 /* 340 * Macros for manipulating sets of CPUs as a bitmap. Note that this 341 * bitmap may vary in size depending on the maximum CPU id a specific 342 * platform supports. This may be different than the number of CPUs 343 * the platform supports, since CPU ids can be sparse. We define two 344 * sets of macros; one for platforms where the maximum CPU id is less 345 * than the number of bits in a single word (32 in a 32-bit kernel, 346 * 64 in a 64-bit kernel), and one for platforms that require bitmaps 347 * of more than one word. 348 */ 349 350 #define CPUSET_WORDS BT_BITOUL(NCPU) 351 #define CPUSET_NOTINSET ((uint_t)-1) 352 353 #if CPUSET_WORDS > 1 354 355 typedef struct cpuset { 356 ulong_t cpub[CPUSET_WORDS]; 357 } cpuset_t; 358 359 /* 360 * Private functions for manipulating cpusets that do not fit in a 361 * single word. These should not be used directly; instead the 362 * CPUSET_* macros should be used so the code will be portable 363 * across different definitions of NCPU. 364 */ 365 extern void cpuset_all(cpuset_t *); 366 extern void cpuset_all_but(cpuset_t *, uint_t); 367 extern int cpuset_isnull(cpuset_t *); 368 extern int cpuset_cmp(cpuset_t *, cpuset_t *); 369 extern void cpuset_only(cpuset_t *, uint_t); 370 extern uint_t cpuset_find(cpuset_t *); 371 372 #define CPUSET_ALL(set) cpuset_all(&(set)) 373 #define CPUSET_ALL_BUT(set, cpu) cpuset_all_but(&(set), cpu) 374 #define CPUSET_ONLY(set, cpu) cpuset_only(&(set), cpu) 375 #define CPU_IN_SET(set, cpu) BT_TEST((set).cpub, cpu) 376 #define CPUSET_ADD(set, cpu) BT_SET((set).cpub, cpu) 377 #define CPUSET_DEL(set, cpu) BT_CLEAR((set).cpub, cpu) 378 #define CPUSET_ISNULL(set) cpuset_isnull(&(set)) 379 #define CPUSET_ISEQUAL(set1, set2) cpuset_cmp(&(set1), &(set2)) 380 381 /* 382 * Find one CPU in the cpuset. 383 * Sets "cpu" to the id of the found CPU, or CPUSET_NOTINSET if no cpu 384 * could be found. (i.e. empty set) 385 */ 386 #define CPUSET_FIND(set, cpu) { \ 387 cpu = cpuset_find(&(set)); \ 388 } 389 390 /* 391 * Atomic cpuset operations 392 * These are safe to use for concurrent cpuset manipulations. 393 * "xdel" and "xadd" are exclusive operations, that set "result" to "0" 394 * if the add or del was successful, or "-1" if not successful. 395 * (e.g. attempting to add a cpu to a cpuset that's already there, or 396 * deleting a cpu that's not in the cpuset) 397 */ 398 399 #define CPUSET_ATOMIC_DEL(set, cpu) BT_ATOMIC_CLEAR((set).cpub, (cpu)) 400 #define CPUSET_ATOMIC_ADD(set, cpu) BT_ATOMIC_SET((set).cpub, (cpu)) 401 402 #define CPUSET_ATOMIC_XADD(set, cpu, result) \ 403 BT_ATOMIC_SET_EXCL((set).cpub, cpu, result) 404 405 #define CPUSET_ATOMIC_XDEL(set, cpu, result) \ 406 BT_ATOMIC_CLEAR_EXCL((set).cpub, cpu, result) 407 408 409 #define CPUSET_OR(set1, set2) { \ 410 int _i; \ 411 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 412 (set1).cpub[_i] |= (set2).cpub[_i]; \ 413 } 414 415 #define CPUSET_AND(set1, set2) { \ 416 int _i; \ 417 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 418 (set1).cpub[_i] &= (set2).cpub[_i]; \ 419 } 420 421 #define CPUSET_ZERO(set) { \ 422 int _i; \ 423 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 424 (set).cpub[_i] = 0; \ 425 } 426 427 #elif CPUSET_WORDS == 1 428 429 typedef ulong_t cpuset_t; /* a set of CPUs */ 430 431 #define CPUSET(cpu) (1UL << (cpu)) 432 433 #define CPUSET_ALL(set) ((void)((set) = ~0UL)) 434 #define CPUSET_ALL_BUT(set, cpu) ((void)((set) = ~CPUSET(cpu))) 435 #define CPUSET_ONLY(set, cpu) ((void)((set) = CPUSET(cpu))) 436 #define CPU_IN_SET(set, cpu) ((set) & CPUSET(cpu)) 437 #define CPUSET_ADD(set, cpu) ((void)((set) |= CPUSET(cpu))) 438 #define CPUSET_DEL(set, cpu) ((void)((set) &= ~CPUSET(cpu))) 439 #define CPUSET_ISNULL(set) ((set) == 0) 440 #define CPUSET_ISEQUAL(set1, set2) ((set1) == (set2)) 441 #define CPUSET_OR(set1, set2) ((void)((set1) |= (set2))) 442 #define CPUSET_AND(set1, set2) ((void)((set1) &= (set2))) 443 #define CPUSET_ZERO(set) ((void)((set) = 0)) 444 445 #define CPUSET_FIND(set, cpu) { \ 446 cpu = (uint_t)(lowbit(set) - 1); \ 447 } 448 449 #define CPUSET_ATOMIC_DEL(set, cpu) atomic_and_long(&(set), ~CPUSET(cpu)) 450 #define CPUSET_ATOMIC_ADD(set, cpu) atomic_or_long(&(set), CPUSET(cpu)) 451 452 #define CPUSET_ATOMIC_XADD(set, cpu, result) \ 453 { result = atomic_set_long_excl(&(set), (cpu)); } 454 455 #define CPUSET_ATOMIC_XDEL(set, cpu, result) \ 456 { result = atomic_clear_long_excl(&(set), (cpu)); } 457 458 #else /* CPUSET_WORDS <= 0 */ 459 460 #error NCPU is undefined or invalid 461 462 #endif /* CPUSET_WORDS */ 463 464 extern cpuset_t cpu_seqid_inuse; 465 466 #endif /* (_KERNEL || _KMEMUSER) && _MACHDEP */ 467 468 #define CPU_CPR_OFFLINE 0x0 469 #define CPU_CPR_ONLINE 0x1 470 #define CPU_CPR_IS_OFFLINE(cpu) (((cpu)->cpu_cpr_flags & CPU_CPR_ONLINE) == 0) 471 #define CPU_SET_CPR_FLAGS(cpu, flag) ((cpu)->cpu_cpr_flags |= flag) 472 473 #if defined(_KERNEL) || defined(_KMEMUSER) 474 475 extern struct cpu *cpu[]; /* indexed by CPU number */ 476 extern cpu_t *cpu_list; /* list of CPUs */ 477 extern int ncpus; /* number of CPUs present */ 478 extern int ncpus_online; /* number of CPUs not quiesced */ 479 extern int max_ncpus; /* max present before ncpus is known */ 480 extern int boot_max_ncpus; /* like max_ncpus but for real */ 481 extern processorid_t max_cpuid; /* maximum CPU number */ 482 extern struct cpu *cpu_inmotion; /* offline or partition move target */ 483 484 #if defined(__i386) || defined(__amd64) 485 extern struct cpu *curcpup(void); 486 #define CPU (curcpup()) /* Pointer to current CPU */ 487 #else 488 #define CPU (curthread->t_cpu) /* Pointer to current CPU */ 489 #endif 490 491 /* 492 * CPU_CURRENT indicates to thread_affinity_set to use CPU->cpu_id 493 * as the target and to grab cpu_lock instead of requiring the caller 494 * to grab it. 495 */ 496 #define CPU_CURRENT -3 497 498 /* 499 * Per-CPU statistics 500 * 501 * cpu_stats_t contains numerous system and VM-related statistics, in the form 502 * of gauges or monotonically-increasing event occurrence counts. 503 */ 504 505 #define CPU_STATS_ENTER_K() kpreempt_disable() 506 #define CPU_STATS_EXIT_K() kpreempt_enable() 507 508 #define CPU_STATS_ADD_K(class, stat, amount) \ 509 { kpreempt_disable(); /* keep from switching CPUs */\ 510 CPU_STATS_ADDQ(CPU, class, stat, amount); \ 511 kpreempt_enable(); \ 512 } 513 514 #define CPU_STATS_ADDQ(cp, class, stat, amount) { \ 515 extern void __dtrace_probe___cpu_##class##info_##stat(uint_t, \ 516 uint64_t *, cpu_t *); \ 517 uint64_t *stataddr = &((cp)->cpu_stats.class.stat); \ 518 __dtrace_probe___cpu_##class##info_##stat((amount), \ 519 stataddr, cp); \ 520 *(stataddr) += (amount); \ 521 } 522 523 #define CPU_STATS(cp, stat) \ 524 ((cp)->cpu_stats.stat) 525 526 #endif /* _KERNEL || _KMEMUSER */ 527 528 /* 529 * CPU support routines. 530 */ 531 #if defined(_KERNEL) && defined(__STDC__) /* not for genassym.c */ 532 533 struct zone; 534 535 void cpu_list_init(cpu_t *); 536 void cpu_add_unit(cpu_t *); 537 void cpu_del_unit(int cpuid); 538 void cpu_add_active(cpu_t *); 539 void cpu_kstat_init(cpu_t *); 540 void cpu_visibility_add(cpu_t *, struct zone *); 541 void cpu_visibility_remove(cpu_t *, struct zone *); 542 void cpu_visibility_configure(cpu_t *, struct zone *); 543 void cpu_visibility_unconfigure(cpu_t *, struct zone *); 544 void cpu_visibility_online(cpu_t *, struct zone *); 545 void cpu_visibility_offline(cpu_t *, struct zone *); 546 void cpu_create_intrstat(cpu_t *); 547 void cpu_delete_intrstat(cpu_t *); 548 int cpu_kstat_intrstat_update(kstat_t *, int); 549 void cpu_intr_swtch_enter(kthread_t *); 550 void cpu_intr_swtch_exit(kthread_t *); 551 552 void mbox_lock_init(void); /* initialize cross-call locks */ 553 void mbox_init(int cpun); /* initialize cross-calls */ 554 void poke_cpu(int cpun); /* interrupt another CPU (to preempt) */ 555 556 void pause_cpus(cpu_t *off_cp); 557 void start_cpus(void); 558 int cpus_paused(void); 559 560 void cpu_pause_init(void); 561 cpu_t *cpu_get(processorid_t cpun); /* get the CPU struct associated */ 562 563 int cpu_online(cpu_t *cp); /* take cpu online */ 564 int cpu_offline(cpu_t *cp, int flags); /* take cpu offline */ 565 int cpu_spare(cpu_t *cp, int flags); /* take cpu to spare */ 566 int cpu_faulted(cpu_t *cp, int flags); /* take cpu to faulted */ 567 int cpu_poweron(cpu_t *cp); /* take powered-off cpu to offline */ 568 int cpu_poweroff(cpu_t *cp); /* take offline cpu to powered-off */ 569 570 cpu_t *cpu_intr_next(cpu_t *cp); /* get next online CPU taking intrs */ 571 int cpu_intr_count(cpu_t *cp); /* count # of CPUs handling intrs */ 572 int cpu_intr_on(cpu_t *cp); /* CPU taking I/O interrupts? */ 573 void cpu_intr_enable(cpu_t *cp); /* enable I/O interrupts */ 574 int cpu_intr_disable(cpu_t *cp); /* disable I/O interrupts */ 575 576 /* 577 * Routines for checking CPU states. 578 */ 579 int cpu_is_online(cpu_t *); /* check if CPU is online */ 580 int cpu_is_nointr(cpu_t *); /* check if CPU can service intrs */ 581 int cpu_is_active(cpu_t *); /* check if CPU can run threads */ 582 int cpu_is_offline(cpu_t *); /* check if CPU is offline */ 583 int cpu_is_poweredoff(cpu_t *); /* check if CPU is powered off */ 584 585 int cpu_flagged_online(cpu_flag_t); /* flags show CPU is online */ 586 int cpu_flagged_nointr(cpu_flag_t); /* flags show CPU not handling intrs */ 587 int cpu_flagged_active(cpu_flag_t); /* flags show CPU scheduling threads */ 588 int cpu_flagged_offline(cpu_flag_t); /* flags show CPU is offline */ 589 int cpu_flagged_poweredoff(cpu_flag_t); /* flags show CPU is powered off */ 590 591 /* 592 * The processor_info(2) state of a CPU is a simplified representation suitable 593 * for use by an application program. Kernel subsystems should utilize the 594 * internal per-CPU state as given by the cpu_flags member of the cpu structure, 595 * as this information may include platform- or architecture-specific state 596 * critical to a subsystem's disposition of a particular CPU. 597 */ 598 void cpu_set_state(cpu_t *); /* record/timestamp current state */ 599 int cpu_get_state(cpu_t *); /* get current cpu state */ 600 const char *cpu_get_state_str(cpu_t *); /* get current cpu state as string */ 601 602 int cpu_configure(int); 603 int cpu_unconfigure(int); 604 void cpu_destroy_bound_threads(cpu_t *cp); 605 606 extern int cpu_bind_thread(kthread_t *tp, processorid_t bind, 607 processorid_t *obind, int *error); 608 extern int cpu_unbind(processorid_t cpu_id); 609 extern void thread_affinity_set(kthread_t *t, int cpu_id); 610 extern void thread_affinity_clear(kthread_t *t); 611 extern void affinity_set(int cpu_id); 612 extern void affinity_clear(void); 613 extern void init_cpu_mstate(struct cpu *, int); 614 extern void term_cpu_mstate(struct cpu *); 615 extern void new_cpu_mstate(int, hrtime_t); 616 extern void get_cpu_mstate(struct cpu *, hrtime_t *); 617 extern void thread_nomigrate(void); 618 extern void thread_allowmigrate(void); 619 extern void weakbinding_stop(void); 620 extern void weakbinding_start(void); 621 622 /* 623 * The following routines affect the CPUs participation in interrupt processing, 624 * if that is applicable on the architecture. This only affects interrupts 625 * which aren't directed at the processor (not cross calls). 626 * 627 * cpu_disable_intr returns non-zero if interrupts were previously enabled. 628 */ 629 int cpu_disable_intr(struct cpu *cp); /* stop issuing interrupts to cpu */ 630 void cpu_enable_intr(struct cpu *cp); /* start issuing interrupts to cpu */ 631 632 /* 633 * The mutex cpu_lock protects cpu_flags for all CPUs, as well as the ncpus 634 * and ncpus_online counts. 635 */ 636 extern kmutex_t cpu_lock; /* lock protecting CPU data */ 637 638 typedef enum { 639 CPU_INIT, 640 CPU_CONFIG, 641 CPU_UNCONFIG, 642 CPU_ON, 643 CPU_OFF, 644 CPU_CPUPART_IN, 645 CPU_CPUPART_OUT 646 } cpu_setup_t; 647 648 typedef int cpu_setup_func_t(cpu_setup_t, int, void *); 649 650 /* 651 * Routines used to register interest in cpu's being added to or removed 652 * from the system. 653 */ 654 extern void register_cpu_setup_func(cpu_setup_func_t *, void *); 655 extern void unregister_cpu_setup_func(cpu_setup_func_t *, void *); 656 extern void cpu_state_change_notify(int, cpu_setup_t); 657 658 /* 659 * Create various strings that describe the given CPU for the 660 * processor_info system call and configuration-related kstats. 661 */ 662 #define CPU_IDSTRLEN 100 663 664 extern void init_cpu_info(struct cpu *); 665 extern void cpu_vm_data_init(struct cpu *); 666 extern void cpu_vm_data_destroy(struct cpu *); 667 668 #endif /* _KERNEL */ 669 670 #ifdef __cplusplus 671 } 672 #endif 673 674 #endif /* _SYS_CPUVAR_H */ 675