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 2006 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 struct cpu_physid *cpu_physid; /* physical associations */ 208 209 #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP) 210 /* 211 * XXX - needs to be fixed. Structure size should not change. 212 * probably needs to be a pointer to an opaque structure. 213 * XXX - this is OK as long as cpu structs aren't in an array. 214 * A user program will either read the first part, 215 * which is machine-independent, or read the whole thing. 216 */ 217 struct machcpu cpu_m; /* per architecture info */ 218 #endif 219 } cpu_t; 220 221 /* 222 * The cpu_core structure consists of per-CPU state available in any context. 223 * On some architectures, this may mean that the page(s) containing the 224 * NCPU-sized array of cpu_core structures must be locked in the TLB -- it 225 * is up to the platform to assure that this is performed properly. Note that 226 * the structure is sized to avoid false sharing. 227 */ 228 #define CPUC_SIZE (sizeof (uint16_t) + sizeof (uintptr_t) + \ 229 sizeof (kmutex_t)) 230 #define CPUC_PADSIZE CPU_CACHE_COHERENCE_SIZE - CPUC_SIZE 231 232 typedef struct cpu_core { 233 uint16_t cpuc_dtrace_flags; /* DTrace flags */ 234 uint8_t cpuc_pad[CPUC_PADSIZE]; /* padding */ 235 uintptr_t cpuc_dtrace_illval; /* DTrace illegal value */ 236 kmutex_t cpuc_pid_lock; /* DTrace pid provider lock */ 237 } cpu_core_t; 238 239 #ifdef _KERNEL 240 extern cpu_core_t cpu_core[]; 241 #endif /* _KERNEL */ 242 243 /* 244 * CPU_ON_INTR() macro. Returns non-zero if currently on interrupt stack. 245 * Note that this isn't a test for a high PIL. For example, cpu_intr_actv 246 * does not get updated when we go through sys_trap from TL>0 at high PIL. 247 * getpil() should be used instead to check for PIL levels. 248 */ 249 #define CPU_ON_INTR(cpup) ((cpup)->cpu_intr_actv >> (LOCK_LEVEL + 1)) 250 251 #if defined(_KERNEL) || defined(_KMEMUSER) 252 253 #define INTR_STACK_SIZE MAX(DEFAULTSTKSZ, PAGESIZE) 254 255 /* MEMBERS PROTECTED BY "atomicity": cpu_flags */ 256 257 /* 258 * Flags in the CPU structure. 259 * 260 * These are protected by cpu_lock (except during creation). 261 * 262 * Offlined-CPUs have three stages of being offline: 263 * 264 * CPU_ENABLE indicates that the CPU is participating in I/O interrupts 265 * that can be directed at a number of different CPUs. If CPU_ENABLE 266 * is off, the CPU will not be given interrupts that can be sent elsewhere, 267 * but will still get interrupts from devices associated with that CPU only, 268 * and from other CPUs. 269 * 270 * CPU_OFFLINE indicates that the dispatcher should not allow any threads 271 * other than interrupt threads to run on that CPU. A CPU will not have 272 * CPU_OFFLINE set if there are any bound threads (besides interrupts). 273 * 274 * CPU_QUIESCED is set if p_offline was able to completely turn idle the 275 * CPU and it will not have to run interrupt threads. In this case it'll 276 * stay in the idle loop until CPU_QUIESCED is turned off. 277 * 278 * CPU_FROZEN is used only by CPR to mark CPUs that have been successfully 279 * suspended (in the suspend path), or have yet to be resumed (in the resume 280 * case). 281 * 282 * On some platforms CPUs can be individually powered off. 283 * The following flags are set for powered off CPUs: CPU_QUIESCED, 284 * CPU_OFFLINE, and CPU_POWEROFF. The following flags are cleared: 285 * CPU_RUNNING, CPU_READY, CPU_EXISTS, and CPU_ENABLE. 286 */ 287 #define CPU_RUNNING 0x001 /* CPU running */ 288 #define CPU_READY 0x002 /* CPU ready for cross-calls */ 289 #define CPU_QUIESCED 0x004 /* CPU will stay in idle */ 290 #define CPU_EXISTS 0x008 /* CPU is configured */ 291 #define CPU_ENABLE 0x010 /* CPU enabled for interrupts */ 292 #define CPU_OFFLINE 0x020 /* CPU offline via p_online */ 293 #define CPU_POWEROFF 0x040 /* CPU is powered off */ 294 #define CPU_FROZEN 0x080 /* CPU is frozen via CPR suspend */ 295 #define CPU_SPARE 0x100 /* CPU offline available for use */ 296 #define CPU_FAULTED 0x200 /* CPU offline diagnosed faulty */ 297 298 #define CPU_ACTIVE(cpu) (((cpu)->cpu_flags & CPU_OFFLINE) == 0) 299 300 /* 301 * Flags for cpu_offline(), cpu_faulted(), and cpu_spare(). 302 */ 303 #define CPU_FORCED 0x0001 /* Force CPU offline */ 304 305 /* 306 * DTrace flags. 307 */ 308 #define CPU_DTRACE_NOFAULT 0x0001 /* Don't fault */ 309 #define CPU_DTRACE_DROP 0x0002 /* Drop this ECB */ 310 #define CPU_DTRACE_BADADDR 0x0004 /* DTrace fault: bad address */ 311 #define CPU_DTRACE_BADALIGN 0x0008 /* DTrace fault: bad alignment */ 312 #define CPU_DTRACE_DIVZERO 0x0010 /* DTrace fault: divide by zero */ 313 #define CPU_DTRACE_ILLOP 0x0020 /* DTrace fault: illegal operation */ 314 #define CPU_DTRACE_NOSCRATCH 0x0040 /* DTrace fault: out of scratch */ 315 #define CPU_DTRACE_KPRIV 0x0080 /* DTrace fault: bad kernel access */ 316 #define CPU_DTRACE_UPRIV 0x0100 /* DTrace fault: bad user access */ 317 #define CPU_DTRACE_TUPOFLOW 0x0200 /* DTrace fault: tuple stack overflow */ 318 #if defined(__sparc) 319 #define CPU_DTRACE_FAKERESTORE 0x0400 /* pid provider hint to getreg */ 320 #endif 321 #define CPU_DTRACE_ENTRY 0x0800 /* pid provider hint to ustack() */ 322 323 #define CPU_DTRACE_FAULT (CPU_DTRACE_BADADDR | CPU_DTRACE_BADALIGN | \ 324 CPU_DTRACE_DIVZERO | CPU_DTRACE_ILLOP | \ 325 CPU_DTRACE_NOSCRATCH | CPU_DTRACE_KPRIV | \ 326 CPU_DTRACE_UPRIV | CPU_DTRACE_TUPOFLOW) 327 #define CPU_DTRACE_ERROR (CPU_DTRACE_FAULT | CPU_DTRACE_DROP) 328 329 /* 330 * Dispatcher flags 331 * These flags must be changed only by the current CPU. 332 */ 333 #define CPU_DISP_DONTSTEAL 0x01 /* CPU undergoing context swtch */ 334 #define CPU_DISP_HALTED 0x02 /* CPU halted waiting for interrupt */ 335 336 337 #endif /* _KERNEL || _KMEMUSER */ 338 339 #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP) 340 341 /* 342 * Macros for manipulating sets of CPUs as a bitmap. Note that this 343 * bitmap may vary in size depending on the maximum CPU id a specific 344 * platform supports. This may be different than the number of CPUs 345 * the platform supports, since CPU ids can be sparse. We define two 346 * sets of macros; one for platforms where the maximum CPU id is less 347 * than the number of bits in a single word (32 in a 32-bit kernel, 348 * 64 in a 64-bit kernel), and one for platforms that require bitmaps 349 * of more than one word. 350 */ 351 352 #define CPUSET_WORDS BT_BITOUL(NCPU) 353 #define CPUSET_NOTINSET ((uint_t)-1) 354 355 #if CPUSET_WORDS > 1 356 357 typedef struct cpuset { 358 ulong_t cpub[CPUSET_WORDS]; 359 } cpuset_t; 360 361 /* 362 * Private functions for manipulating cpusets that do not fit in a 363 * single word. These should not be used directly; instead the 364 * CPUSET_* macros should be used so the code will be portable 365 * across different definitions of NCPU. 366 */ 367 extern void cpuset_all(cpuset_t *); 368 extern void cpuset_all_but(cpuset_t *, uint_t); 369 extern int cpuset_isnull(cpuset_t *); 370 extern int cpuset_cmp(cpuset_t *, cpuset_t *); 371 extern void cpuset_only(cpuset_t *, uint_t); 372 extern uint_t cpuset_find(cpuset_t *); 373 extern void cpuset_bounds(cpuset_t *, uint_t *, uint_t *); 374 375 #define CPUSET_ALL(set) cpuset_all(&(set)) 376 #define CPUSET_ALL_BUT(set, cpu) cpuset_all_but(&(set), cpu) 377 #define CPUSET_ONLY(set, cpu) cpuset_only(&(set), cpu) 378 #define CPU_IN_SET(set, cpu) BT_TEST((set).cpub, cpu) 379 #define CPUSET_ADD(set, cpu) BT_SET((set).cpub, cpu) 380 #define CPUSET_DEL(set, cpu) BT_CLEAR((set).cpub, cpu) 381 #define CPUSET_ISNULL(set) cpuset_isnull(&(set)) 382 #define CPUSET_ISEQUAL(set1, set2) cpuset_cmp(&(set1), &(set2)) 383 384 /* 385 * Find one CPU in the cpuset. 386 * Sets "cpu" to the id of the found CPU, or CPUSET_NOTINSET if no cpu 387 * could be found. (i.e. empty set) 388 */ 389 #define CPUSET_FIND(set, cpu) { \ 390 cpu = cpuset_find(&(set)); \ 391 } 392 393 /* 394 * Determine the smallest and largest CPU id in the set. Returns 395 * CPUSET_NOTINSET in smallest and largest when set is empty. 396 */ 397 #define CPUSET_BOUNDS(set, smallest, largest) { \ 398 cpuset_bounds(&(set), &(smallest), &(largest)); \ 399 } 400 401 /* 402 * Atomic cpuset operations 403 * These are safe to use for concurrent cpuset manipulations. 404 * "xdel" and "xadd" are exclusive operations, that set "result" to "0" 405 * if the add or del was successful, or "-1" if not successful. 406 * (e.g. attempting to add a cpu to a cpuset that's already there, or 407 * deleting a cpu that's not in the cpuset) 408 */ 409 410 #define CPUSET_ATOMIC_DEL(set, cpu) BT_ATOMIC_CLEAR((set).cpub, (cpu)) 411 #define CPUSET_ATOMIC_ADD(set, cpu) BT_ATOMIC_SET((set).cpub, (cpu)) 412 413 #define CPUSET_ATOMIC_XADD(set, cpu, result) \ 414 BT_ATOMIC_SET_EXCL((set).cpub, cpu, result) 415 416 #define CPUSET_ATOMIC_XDEL(set, cpu, result) \ 417 BT_ATOMIC_CLEAR_EXCL((set).cpub, cpu, result) 418 419 420 #define CPUSET_OR(set1, set2) { \ 421 int _i; \ 422 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 423 (set1).cpub[_i] |= (set2).cpub[_i]; \ 424 } 425 426 #define CPUSET_AND(set1, set2) { \ 427 int _i; \ 428 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 429 (set1).cpub[_i] &= (set2).cpub[_i]; \ 430 } 431 432 #define CPUSET_ZERO(set) { \ 433 int _i; \ 434 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 435 (set).cpub[_i] = 0; \ 436 } 437 438 #elif CPUSET_WORDS == 1 439 440 typedef ulong_t cpuset_t; /* a set of CPUs */ 441 442 #define CPUSET(cpu) (1UL << (cpu)) 443 444 #define CPUSET_ALL(set) ((void)((set) = ~0UL)) 445 #define CPUSET_ALL_BUT(set, cpu) ((void)((set) = ~CPUSET(cpu))) 446 #define CPUSET_ONLY(set, cpu) ((void)((set) = CPUSET(cpu))) 447 #define CPU_IN_SET(set, cpu) ((set) & CPUSET(cpu)) 448 #define CPUSET_ADD(set, cpu) ((void)((set) |= CPUSET(cpu))) 449 #define CPUSET_DEL(set, cpu) ((void)((set) &= ~CPUSET(cpu))) 450 #define CPUSET_ISNULL(set) ((set) == 0) 451 #define CPUSET_ISEQUAL(set1, set2) ((set1) == (set2)) 452 #define CPUSET_OR(set1, set2) ((void)((set1) |= (set2))) 453 #define CPUSET_AND(set1, set2) ((void)((set1) &= (set2))) 454 #define CPUSET_ZERO(set) ((void)((set) = 0)) 455 456 #define CPUSET_FIND(set, cpu) { \ 457 cpu = (uint_t)(lowbit(set) - 1); \ 458 } 459 460 #define CPUSET_BOUNDS(set, smallest, largest) { \ 461 smallest = (uint_t)(lowbit(set) - 1); \ 462 largest = (uint_t)(highbit(set) - 1); \ 463 } 464 465 #define CPUSET_ATOMIC_DEL(set, cpu) atomic_and_long(&(set), ~CPUSET(cpu)) 466 #define CPUSET_ATOMIC_ADD(set, cpu) atomic_or_long(&(set), CPUSET(cpu)) 467 468 #define CPUSET_ATOMIC_XADD(set, cpu, result) \ 469 { result = atomic_set_long_excl(&(set), (cpu)); } 470 471 #define CPUSET_ATOMIC_XDEL(set, cpu, result) \ 472 { result = atomic_clear_long_excl(&(set), (cpu)); } 473 474 #else /* CPUSET_WORDS <= 0 */ 475 476 #error NCPU is undefined or invalid 477 478 #endif /* CPUSET_WORDS */ 479 480 extern cpuset_t cpu_seqid_inuse; 481 482 #endif /* (_KERNEL || _KMEMUSER) && _MACHDEP */ 483 484 #define CPU_CPR_OFFLINE 0x0 485 #define CPU_CPR_ONLINE 0x1 486 #define CPU_CPR_IS_OFFLINE(cpu) (((cpu)->cpu_cpr_flags & CPU_CPR_ONLINE) == 0) 487 #define CPU_SET_CPR_FLAGS(cpu, flag) ((cpu)->cpu_cpr_flags |= flag) 488 489 #if defined(_KERNEL) || defined(_KMEMUSER) 490 491 extern struct cpu *cpu[]; /* indexed by CPU number */ 492 extern cpu_t *cpu_list; /* list of CPUs */ 493 extern int ncpus; /* number of CPUs present */ 494 extern int ncpus_online; /* number of CPUs not quiesced */ 495 extern int max_ncpus; /* max present before ncpus is known */ 496 extern int boot_max_ncpus; /* like max_ncpus but for real */ 497 extern processorid_t max_cpuid; /* maximum CPU number */ 498 extern struct cpu *cpu_inmotion; /* offline or partition move target */ 499 500 #if defined(__i386) || defined(__amd64) 501 extern struct cpu *curcpup(void); 502 #define CPU (curcpup()) /* Pointer to current CPU */ 503 #else 504 #define CPU (curthread->t_cpu) /* Pointer to current CPU */ 505 #endif 506 507 /* 508 * CPU_CURRENT indicates to thread_affinity_set to use CPU->cpu_id 509 * as the target and to grab cpu_lock instead of requiring the caller 510 * to grab it. 511 */ 512 #define CPU_CURRENT -3 513 514 /* 515 * Per-CPU statistics 516 * 517 * cpu_stats_t contains numerous system and VM-related statistics, in the form 518 * of gauges or monotonically-increasing event occurrence counts. 519 */ 520 521 #define CPU_STATS_ENTER_K() kpreempt_disable() 522 #define CPU_STATS_EXIT_K() kpreempt_enable() 523 524 #define CPU_STATS_ADD_K(class, stat, amount) \ 525 { kpreempt_disable(); /* keep from switching CPUs */\ 526 CPU_STATS_ADDQ(CPU, class, stat, amount); \ 527 kpreempt_enable(); \ 528 } 529 530 #define CPU_STATS_ADDQ(cp, class, stat, amount) { \ 531 extern void __dtrace_probe___cpu_##class##info_##stat(uint_t, \ 532 uint64_t *, cpu_t *); \ 533 uint64_t *stataddr = &((cp)->cpu_stats.class.stat); \ 534 __dtrace_probe___cpu_##class##info_##stat((amount), \ 535 stataddr, cp); \ 536 *(stataddr) += (amount); \ 537 } 538 539 #define CPU_STATS(cp, stat) \ 540 ((cp)->cpu_stats.stat) 541 542 #endif /* _KERNEL || _KMEMUSER */ 543 544 /* 545 * CPU support routines. 546 */ 547 #if defined(_KERNEL) && defined(__STDC__) /* not for genassym.c */ 548 549 struct zone; 550 551 void cpu_list_init(cpu_t *); 552 void cpu_add_unit(cpu_t *); 553 void cpu_del_unit(int cpuid); 554 void cpu_add_active(cpu_t *); 555 void cpu_kstat_init(cpu_t *); 556 void cpu_visibility_add(cpu_t *, struct zone *); 557 void cpu_visibility_remove(cpu_t *, struct zone *); 558 void cpu_visibility_configure(cpu_t *, struct zone *); 559 void cpu_visibility_unconfigure(cpu_t *, struct zone *); 560 void cpu_visibility_online(cpu_t *, struct zone *); 561 void cpu_visibility_offline(cpu_t *, struct zone *); 562 void cpu_create_intrstat(cpu_t *); 563 void cpu_delete_intrstat(cpu_t *); 564 int cpu_kstat_intrstat_update(kstat_t *, int); 565 void cpu_intr_swtch_enter(kthread_t *); 566 void cpu_intr_swtch_exit(kthread_t *); 567 568 void mbox_lock_init(void); /* initialize cross-call locks */ 569 void mbox_init(int cpun); /* initialize cross-calls */ 570 void poke_cpu(int cpun); /* interrupt another CPU (to preempt) */ 571 572 void pause_cpus(cpu_t *off_cp); 573 void start_cpus(void); 574 int cpus_paused(void); 575 576 void cpu_pause_init(void); 577 cpu_t *cpu_get(processorid_t cpun); /* get the CPU struct associated */ 578 579 int cpu_online(cpu_t *cp); /* take cpu online */ 580 int cpu_offline(cpu_t *cp, int flags); /* take cpu offline */ 581 int cpu_spare(cpu_t *cp, int flags); /* take cpu to spare */ 582 int cpu_faulted(cpu_t *cp, int flags); /* take cpu to faulted */ 583 int cpu_poweron(cpu_t *cp); /* take powered-off cpu to offline */ 584 int cpu_poweroff(cpu_t *cp); /* take offline cpu to powered-off */ 585 586 cpu_t *cpu_intr_next(cpu_t *cp); /* get next online CPU taking intrs */ 587 int cpu_intr_count(cpu_t *cp); /* count # of CPUs handling intrs */ 588 int cpu_intr_on(cpu_t *cp); /* CPU taking I/O interrupts? */ 589 void cpu_intr_enable(cpu_t *cp); /* enable I/O interrupts */ 590 int cpu_intr_disable(cpu_t *cp); /* disable I/O interrupts */ 591 void cpu_intr_alloc(cpu_t *cp, int n); /* allocate interrupt threads */ 592 593 /* 594 * Routines for checking CPU states. 595 */ 596 int cpu_is_online(cpu_t *); /* check if CPU is online */ 597 int cpu_is_nointr(cpu_t *); /* check if CPU can service intrs */ 598 int cpu_is_active(cpu_t *); /* check if CPU can run threads */ 599 int cpu_is_offline(cpu_t *); /* check if CPU is offline */ 600 int cpu_is_poweredoff(cpu_t *); /* check if CPU is powered off */ 601 602 int cpu_flagged_online(cpu_flag_t); /* flags show CPU is online */ 603 int cpu_flagged_nointr(cpu_flag_t); /* flags show CPU not handling intrs */ 604 int cpu_flagged_active(cpu_flag_t); /* flags show CPU scheduling threads */ 605 int cpu_flagged_offline(cpu_flag_t); /* flags show CPU is offline */ 606 int cpu_flagged_poweredoff(cpu_flag_t); /* flags show CPU is powered off */ 607 608 /* 609 * The processor_info(2) state of a CPU is a simplified representation suitable 610 * for use by an application program. Kernel subsystems should utilize the 611 * internal per-CPU state as given by the cpu_flags member of the cpu structure, 612 * as this information may include platform- or architecture-specific state 613 * critical to a subsystem's disposition of a particular CPU. 614 */ 615 void cpu_set_state(cpu_t *); /* record/timestamp current state */ 616 int cpu_get_state(cpu_t *); /* get current cpu state */ 617 const char *cpu_get_state_str(cpu_t *); /* get current cpu state as string */ 618 619 int cpu_configure(int); 620 int cpu_unconfigure(int); 621 void cpu_destroy_bound_threads(cpu_t *cp); 622 623 extern int cpu_bind_thread(kthread_t *tp, processorid_t bind, 624 processorid_t *obind, int *error); 625 extern int cpu_unbind(processorid_t cpu_id); 626 extern void thread_affinity_set(kthread_t *t, int cpu_id); 627 extern void thread_affinity_clear(kthread_t *t); 628 extern void affinity_set(int cpu_id); 629 extern void affinity_clear(void); 630 extern void init_cpu_mstate(struct cpu *, int); 631 extern void term_cpu_mstate(struct cpu *); 632 extern void new_cpu_mstate(int, hrtime_t); 633 extern void get_cpu_mstate(struct cpu *, hrtime_t *); 634 extern void thread_nomigrate(void); 635 extern void thread_allowmigrate(void); 636 extern void weakbinding_stop(void); 637 extern void weakbinding_start(void); 638 639 /* 640 * The following routines affect the CPUs participation in interrupt processing, 641 * if that is applicable on the architecture. This only affects interrupts 642 * which aren't directed at the processor (not cross calls). 643 * 644 * cpu_disable_intr returns non-zero if interrupts were previously enabled. 645 */ 646 int cpu_disable_intr(struct cpu *cp); /* stop issuing interrupts to cpu */ 647 void cpu_enable_intr(struct cpu *cp); /* start issuing interrupts to cpu */ 648 649 /* 650 * The mutex cpu_lock protects cpu_flags for all CPUs, as well as the ncpus 651 * and ncpus_online counts. 652 */ 653 extern kmutex_t cpu_lock; /* lock protecting CPU data */ 654 655 typedef enum { 656 CPU_INIT, 657 CPU_CONFIG, 658 CPU_UNCONFIG, 659 CPU_ON, 660 CPU_OFF, 661 CPU_CPUPART_IN, 662 CPU_CPUPART_OUT 663 } cpu_setup_t; 664 665 typedef int cpu_setup_func_t(cpu_setup_t, int, void *); 666 667 /* 668 * Routines used to register interest in cpu's being added to or removed 669 * from the system. 670 */ 671 extern void register_cpu_setup_func(cpu_setup_func_t *, void *); 672 extern void unregister_cpu_setup_func(cpu_setup_func_t *, void *); 673 extern void cpu_state_change_notify(int, cpu_setup_t); 674 675 /* 676 * Create various strings that describe the given CPU for the 677 * processor_info system call and configuration-related kstats. 678 */ 679 #define CPU_IDSTRLEN 100 680 681 extern void init_cpu_info(struct cpu *); 682 extern void cpu_vm_data_init(struct cpu *); 683 extern void cpu_vm_data_destroy(struct cpu *); 684 685 #endif /* _KERNEL */ 686 687 #ifdef __cplusplus 688 } 689 #endif 690 691 #endif /* _SYS_CPUVAR_H */ 692