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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 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 #include <asm/cpuvar.h> 48 #endif 49 50 #ifdef __cplusplus 51 extern "C" { 52 #endif 53 54 struct squeue_set_s; 55 56 #define CPU_CACHE_COHERENCE_SIZE 64 57 #define S_LOADAVG_SZ 11 58 #define S_MOVAVG_SZ 10 59 60 struct loadavg_s { 61 int lg_cur; /* current loadavg entry */ 62 unsigned int lg_len; /* number entries recorded */ 63 hrtime_t lg_total; /* used to temporarily hold load totals */ 64 hrtime_t lg_loads[S_LOADAVG_SZ]; /* table of recorded entries */ 65 }; 66 67 /* 68 * For fast event tracing. 69 */ 70 struct ftrace_record; 71 typedef struct ftrace_data { 72 int ftd_state; /* ftrace flags */ 73 kmutex_t ftd_mutex; /* ftrace buffer lock */ 74 struct ftrace_record *ftd_cur; /* current record */ 75 struct ftrace_record *ftd_first; /* first record */ 76 struct ftrace_record *ftd_last; /* last record */ 77 } ftrace_data_t; 78 79 struct cyc_cpu; 80 struct nvlist; 81 82 /* 83 * Per-CPU data. 84 */ 85 typedef struct cpu { 86 processorid_t cpu_id; /* CPU number */ 87 processorid_t cpu_seqid; /* sequential CPU id (0..ncpus-1) */ 88 volatile cpu_flag_t cpu_flags; /* flags indicating CPU state */ 89 struct cpu *cpu_self; /* pointer to itself */ 90 kthread_t *cpu_thread; /* current thread */ 91 kthread_t *cpu_idle_thread; /* idle thread for this CPU */ 92 kthread_t *cpu_pause_thread; /* pause thread for this CPU */ 93 klwp_id_t cpu_lwp; /* current lwp (if any) */ 94 klwp_id_t cpu_fpowner; /* currently loaded fpu owner */ 95 struct cpupart *cpu_part; /* partition with this CPU */ 96 struct lgrp_ld *cpu_lpl; /* pointer to this cpu's load */ 97 struct chip *cpu_chip; /* cpu's chip data */ 98 int cpu_rechoose; /* cpu's rechoose_interval */ 99 int cpu_cache_offset; /* see kmem.c for details */ 100 101 /* 102 * Links to other CPUs. It is safe to walk these lists if 103 * one of the following is true: 104 * - cpu_lock held 105 * - preemption disabled via kpreempt_disable 106 * - PIL >= DISP_LEVEL 107 * - acting thread is an interrupt thread 108 * - all other CPUs are paused 109 */ 110 struct cpu *cpu_next; /* next existing CPU */ 111 struct cpu *cpu_prev; /* prev existing CPU */ 112 struct cpu *cpu_next_onln; /* next online (enabled) CPU */ 113 struct cpu *cpu_prev_onln; /* prev online (enabled) CPU */ 114 struct cpu *cpu_next_part; /* next CPU in partition */ 115 struct cpu *cpu_prev_part; /* prev CPU in partition */ 116 struct cpu *cpu_next_lgrp; /* next CPU in latency group */ 117 struct cpu *cpu_prev_lgrp; /* prev CPU in latency group */ 118 struct cpu *cpu_next_chip; /* next CPU on chip */ 119 struct cpu *cpu_prev_chip; /* prev CPU on chip */ 120 struct cpu *cpu_next_lpl; /* next CPU in lgrp partition */ 121 struct cpu *cpu_prev_lpl; 122 void *cpu_reserved[4]; /* reserved for future use */ 123 124 /* 125 * Scheduling variables. 126 */ 127 disp_t *cpu_disp; /* dispatch queue data */ 128 /* 129 * Note that cpu_disp is set before the CPU is added to the system 130 * and is never modified. Hence, no additional locking is needed 131 * beyond what's necessary to access the cpu_t structure. 132 */ 133 char cpu_runrun; /* scheduling flag - set to preempt */ 134 char cpu_kprunrun; /* force kernel preemption */ 135 pri_t cpu_chosen_level; /* priority at which cpu */ 136 /* was chosen for scheduling */ 137 kthread_t *cpu_dispthread; /* thread selected for dispatch */ 138 disp_lock_t cpu_thread_lock; /* dispatcher lock on current thread */ 139 uint8_t cpu_disp_flags; /* flags used by dispatcher */ 140 /* 141 * The following field is updated when ever the cpu_dispthread 142 * changes. Also in places, where the current thread(cpu_dispthread) 143 * priority changes. This is used in disp_lowpri_cpu() 144 */ 145 pri_t cpu_dispatch_pri; /* priority of cpu_dispthread */ 146 clock_t cpu_last_swtch; /* last time switched to new thread */ 147 148 /* 149 * Interrupt data. 150 */ 151 caddr_t cpu_intr_stack; /* interrupt stack */ 152 kthread_t *cpu_intr_thread; /* interrupt thread list */ 153 uint_t cpu_intr_actv; /* interrupt levels active (bitmask) */ 154 int cpu_base_spl; /* priority for highest rupt active */ 155 156 /* 157 * Statistics. 158 */ 159 cpu_stats_t cpu_stats; /* per-CPU statistics */ 160 struct kstat *cpu_info_kstat; /* kstat for cpu info */ 161 162 uintptr_t cpu_profile_pc; /* kernel PC in profile interrupt */ 163 uintptr_t cpu_profile_upc; /* user PC in profile interrupt */ 164 uintptr_t cpu_profile_pil; /* PIL when profile interrupted */ 165 166 ftrace_data_t cpu_ftrace; /* per cpu ftrace data */ 167 168 clock_t cpu_deadman_lbolt; /* used by deadman() */ 169 uint_t cpu_deadman_countdown; /* used by deadman() */ 170 171 kmutex_t cpu_cpc_ctxlock; /* protects context for idle thread */ 172 kcpc_ctx_t *cpu_cpc_ctx; /* performance counter context */ 173 174 /* 175 * Configuration information for the processor_info system call. 176 */ 177 processor_info_t cpu_type_info; /* config info */ 178 time_t cpu_state_begin; /* when CPU entered current state */ 179 char cpu_cpr_flags; /* CPR related info */ 180 struct cyc_cpu *cpu_cyclic; /* per cpu cyclic subsystem data */ 181 struct squeue_set_s *cpu_squeue_set; /* per cpu squeue set */ 182 struct nvlist *cpu_props; /* pool-related properties */ 183 184 krwlock_t cpu_ft_lock; /* DTrace: fasttrap lock */ 185 uintptr_t cpu_dtrace_caller; /* DTrace: caller, if any */ 186 hrtime_t cpu_dtrace_chillmark; /* DTrace: chill mark time */ 187 hrtime_t cpu_dtrace_chilled; /* DTrace: total chill time */ 188 189 uint16_t cpu_mstate; /* cpu microstate */ 190 hrtime_t cpu_mstate_start; /* cpu microstate start time */ 191 hrtime_t cpu_acct[NCMSTATES]; /* cpu microstate data */ 192 hrtime_t cpu_waitrq; /* cpu run-queue wait time */ 193 struct loadavg_s cpu_loadavg; /* loadavg info for this cpu */ 194 195 char *cpu_idstr; /* for printing and debugging */ 196 char *cpu_brandstr; /* for printing */ 197 198 /* 199 * Sum of all device interrupt weights that are currently directed at 200 * this cpu. Cleared at start of interrupt redistribution. 201 */ 202 int32_t cpu_intr_weight; 203 204 #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP) 205 /* 206 * XXX - needs to be fixed. Structure size should not change. 207 * probably needs to be a pointer to an opaque structure. 208 * XXX - this is OK as long as cpu structs aren't in an array. 209 * A user program will either read the first part, 210 * which is machine-independent, or read the whole thing. 211 */ 212 struct machcpu cpu_m; /* per architecture info */ 213 #endif 214 } cpu_t; 215 216 /* 217 * The cpu_core structure consists of per-CPU state available in any context. 218 * On some architectures, this may mean that the page(s) containing the 219 * NCPU-sized array of cpu_core structures must be locked in the TLB -- it 220 * is up to the platform to assure that this is performed properly. Note that 221 * the structure is sized to avoid false sharing. 222 */ 223 #define CPUC_SIZE (sizeof (uint16_t) + sizeof (uintptr_t) + \ 224 sizeof (kmutex_t)) 225 #define CPUC_PADSIZE CPU_CACHE_COHERENCE_SIZE - CPUC_SIZE 226 227 typedef struct cpu_core { 228 uint16_t cpuc_dtrace_flags; /* DTrace flags */ 229 uint8_t cpuc_pad[CPUC_PADSIZE]; /* padding */ 230 uintptr_t cpuc_dtrace_illval; /* DTrace illegal value */ 231 kmutex_t cpuc_pid_lock; /* DTrace pid provider lock */ 232 } cpu_core_t; 233 234 #ifdef _KERNEL 235 extern cpu_core_t cpu_core[]; 236 #endif /* _KERNEL */ 237 238 /* 239 * CPU_ON_INTR() macro. Returns non-zero if currently on interrupt stack. 240 * Note that this isn't a test for a high PIL. For example, cpu_intr_actv 241 * does not get updated when we go through sys_trap from TL>0 at high PIL. 242 * getpil() should be used instead to check for PIL levels. 243 */ 244 #define CPU_ON_INTR(cpup) ((cpup)->cpu_intr_actv >> (LOCK_LEVEL + 1)) 245 246 #if defined(_KERNEL) || defined(_KMEMUSER) 247 248 #define INTR_STACK_SIZE MAX(DEFAULTSTKSZ, PAGESIZE) 249 250 /* MEMBERS PROTECTED BY "atomicity": cpu_flags */ 251 252 /* 253 * Flags in the CPU structure. 254 * 255 * These are protected by cpu_lock (except during creation). 256 * 257 * Offlined-CPUs have three stages of being offline: 258 * 259 * CPU_ENABLE indicates that the CPU is participating in I/O interrupts 260 * that can be directed at a number of different CPUs. If CPU_ENABLE 261 * is off, the CPU will not be given interrupts that can be sent elsewhere, 262 * but will still get interrupts from devices associated with that CPU only, 263 * and from other CPUs. 264 * 265 * CPU_OFFLINE indicates that the dispatcher should not allow any threads 266 * other than interrupt threads to run on that CPU. A CPU will not have 267 * CPU_OFFLINE set if there are any bound threads (besides interrupts). 268 * 269 * CPU_QUIESCED is set if p_offline was able to completely turn idle the 270 * CPU and it will not have to run interrupt threads. In this case it'll 271 * stay in the idle loop until CPU_QUIESCED is turned off. 272 * 273 * CPU_FROZEN is used only by CPR to mark CPUs that have been successfully 274 * suspended (in the suspend path), or have yet to be resumed (in the resume 275 * case). 276 * 277 * On some platforms CPUs can be individually powered off. 278 * The following flags are set for powered off CPUs: CPU_QUIESCED, 279 * CPU_OFFLINE, and CPU_POWEROFF. The following flags are cleared: 280 * CPU_RUNNING, CPU_READY, CPU_EXISTS, and CPU_ENABLE. 281 */ 282 #define CPU_RUNNING 0x001 /* CPU running */ 283 #define CPU_READY 0x002 /* CPU ready for cross-calls */ 284 #define CPU_QUIESCED 0x004 /* CPU will stay in idle */ 285 #define CPU_EXISTS 0x008 /* CPU is configured */ 286 #define CPU_ENABLE 0x010 /* CPU enabled for interrupts */ 287 #define CPU_OFFLINE 0x020 /* CPU offline via p_online */ 288 #define CPU_POWEROFF 0x040 /* CPU is powered off */ 289 #define CPU_FROZEN 0x080 /* CPU is frozen via CPR suspend */ 290 #define CPU_SPARE 0x100 /* CPU offline available for use */ 291 #define CPU_FAULTED 0x200 /* CPU offline diagnosed faulty */ 292 293 #define CPU_ACTIVE(cpu) (((cpu)->cpu_flags & CPU_OFFLINE) == 0) 294 295 /* 296 * Flags for cpu_offline(), cpu_faulted(), and cpu_spare(). 297 */ 298 #define CPU_FORCED 0x0001 /* Force CPU offline */ 299 300 /* 301 * DTrace flags. 302 */ 303 #define CPU_DTRACE_NOFAULT 0x0001 /* Don't fault */ 304 #define CPU_DTRACE_DROP 0x0002 /* Drop this ECB */ 305 #define CPU_DTRACE_BADADDR 0x0004 /* DTrace fault: bad address */ 306 #define CPU_DTRACE_BADALIGN 0x0008 /* DTrace fault: bad alignment */ 307 #define CPU_DTRACE_DIVZERO 0x0010 /* DTrace fault: divide by zero */ 308 #define CPU_DTRACE_ILLOP 0x0020 /* DTrace fault: illegal operation */ 309 #define CPU_DTRACE_NOSCRATCH 0x0040 /* DTrace fault: out of scratch */ 310 #define CPU_DTRACE_KPRIV 0x0080 /* DTrace fault: bad kernel access */ 311 #define CPU_DTRACE_UPRIV 0x0100 /* DTrace fault: bad user access */ 312 #define CPU_DTRACE_TUPOFLOW 0x0200 /* DTrace fault: tuple stack overflow */ 313 #if defined(__sparc) 314 #define CPU_DTRACE_FAKERESTORE 0x0400 /* pid provider hint to getreg */ 315 #endif 316 #define CPU_DTRACE_ENTRY 0x0800 /* pid provider hint to ustack() */ 317 318 #define CPU_DTRACE_FAULT (CPU_DTRACE_BADADDR | CPU_DTRACE_BADALIGN | \ 319 CPU_DTRACE_DIVZERO | CPU_DTRACE_ILLOP | \ 320 CPU_DTRACE_NOSCRATCH | CPU_DTRACE_KPRIV | \ 321 CPU_DTRACE_UPRIV | CPU_DTRACE_TUPOFLOW) 322 #define CPU_DTRACE_ERROR (CPU_DTRACE_FAULT | CPU_DTRACE_DROP) 323 324 /* 325 * Dispatcher flags 326 * These flags must be changed only by the current CPU. 327 */ 328 #define CPU_DISP_DONTSTEAL 0x01 /* CPU undergoing context swtch */ 329 #define CPU_DISP_HALTED 0x02 /* CPU halted waiting for interrupt */ 330 331 332 #endif /* _KERNEL || _KMEMUSER */ 333 334 #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP) 335 336 /* 337 * Macros for manipulating sets of CPUs as a bitmap. Note that this 338 * bitmap may vary in size depending on the maximum CPU id a specific 339 * platform supports. This may be different than the number of CPUs 340 * the platform supports, since CPU ids can be sparse. We define two 341 * sets of macros; one for platforms where the maximum CPU id is less 342 * than the number of bits in a single word (32 in a 32-bit kernel, 343 * 64 in a 64-bit kernel), and one for platforms that require bitmaps 344 * of more than one word. 345 */ 346 347 #define CPUSET_WORDS BT_BITOUL(NCPU) 348 #define CPUSET_NOTINSET ((uint_t)-1) 349 350 #if CPUSET_WORDS > 1 351 352 typedef struct cpuset { 353 ulong_t cpub[CPUSET_WORDS]; 354 } cpuset_t; 355 356 /* 357 * Private functions for manipulating cpusets that do not fit in a 358 * single word. These should not be used directly; instead the 359 * CPUSET_* macros should be used so the code will be portable 360 * across different definitions of NCPU. 361 */ 362 extern void cpuset_all(cpuset_t *); 363 extern void cpuset_all_but(cpuset_t *, uint_t); 364 extern int cpuset_isnull(cpuset_t *); 365 extern int cpuset_cmp(cpuset_t *, cpuset_t *); 366 extern void cpuset_only(cpuset_t *, uint_t); 367 extern uint_t cpuset_find(cpuset_t *); 368 369 #define CPUSET_ALL(set) cpuset_all(&(set)) 370 #define CPUSET_ALL_BUT(set, cpu) cpuset_all_but(&(set), cpu) 371 #define CPUSET_ONLY(set, cpu) cpuset_only(&(set), cpu) 372 #define CPU_IN_SET(set, cpu) BT_TEST((set).cpub, cpu) 373 #define CPUSET_ADD(set, cpu) BT_SET((set).cpub, cpu) 374 #define CPUSET_DEL(set, cpu) BT_CLEAR((set).cpub, cpu) 375 #define CPUSET_ISNULL(set) cpuset_isnull(&(set)) 376 #define CPUSET_ISEQUAL(set1, set2) cpuset_cmp(&(set1), &(set2)) 377 378 /* 379 * Find one CPU in the cpuset. 380 * Sets "cpu" to the id of the found CPU, or CPUSET_NOTINSET if no cpu 381 * could be found. (i.e. empty set) 382 */ 383 #define CPUSET_FIND(set, cpu) { \ 384 cpu = cpuset_find(&(set)); \ 385 } 386 387 /* 388 * Atomic cpuset operations 389 * These are safe to use for concurrent cpuset manipulations. 390 * "xdel" and "xadd" are exclusive operations, that set "result" to "0" 391 * if the add or del was successful, or "-1" if not successful. 392 * (e.g. attempting to add a cpu to a cpuset that's already there, or 393 * deleting a cpu that's not in the cpuset) 394 */ 395 396 #define CPUSET_ATOMIC_DEL(set, cpu) BT_ATOMIC_CLEAR((set).cpub, (cpu)) 397 #define CPUSET_ATOMIC_ADD(set, cpu) BT_ATOMIC_SET((set).cpub, (cpu)) 398 399 #define CPUSET_ATOMIC_XADD(set, cpu, result) \ 400 BT_ATOMIC_SET_EXCL((set).cpub, cpu, result) 401 402 #define CPUSET_ATOMIC_XDEL(set, cpu, result) \ 403 BT_ATOMIC_CLEAR_EXCL((set).cpub, cpu, result) 404 405 406 #define CPUSET_OR(set1, set2) { \ 407 int _i; \ 408 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 409 (set1).cpub[_i] |= (set2).cpub[_i]; \ 410 } 411 412 #define CPUSET_AND(set1, set2) { \ 413 int _i; \ 414 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 415 (set1).cpub[_i] &= (set2).cpub[_i]; \ 416 } 417 418 #define CPUSET_ZERO(set) { \ 419 int _i; \ 420 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 421 (set).cpub[_i] = 0; \ 422 } 423 424 #elif CPUSET_WORDS == 1 425 426 typedef ulong_t cpuset_t; /* a set of CPUs */ 427 428 #define CPUSET(cpu) (1UL << (cpu)) 429 430 #define CPUSET_ALL(set) ((void)((set) = ~0UL)) 431 #define CPUSET_ALL_BUT(set, cpu) ((void)((set) = ~CPUSET(cpu))) 432 #define CPUSET_ONLY(set, cpu) ((void)((set) = CPUSET(cpu))) 433 #define CPU_IN_SET(set, cpu) ((set) & CPUSET(cpu)) 434 #define CPUSET_ADD(set, cpu) ((void)((set) |= CPUSET(cpu))) 435 #define CPUSET_DEL(set, cpu) ((void)((set) &= ~CPUSET(cpu))) 436 #define CPUSET_ISNULL(set) ((set) == 0) 437 #define CPUSET_ISEQUAL(set1, set2) ((set1) == (set2)) 438 #define CPUSET_OR(set1, set2) ((void)((set1) |= (set2))) 439 #define CPUSET_AND(set1, set2) ((void)((set1) &= (set2))) 440 #define CPUSET_ZERO(set) ((void)((set) = 0)) 441 442 #define CPUSET_FIND(set, cpu) { \ 443 cpu = (uint_t)(lowbit(set) - 1); \ 444 } 445 446 #define CPUSET_ATOMIC_DEL(set, cpu) atomic_and_long(&(set), ~CPUSET(cpu)) 447 #define CPUSET_ATOMIC_ADD(set, cpu) atomic_or_long(&(set), CPUSET(cpu)) 448 449 #define CPUSET_ATOMIC_XADD(set, cpu, result) \ 450 { result = atomic_set_long_excl(&(set), (cpu)); } 451 452 #define CPUSET_ATOMIC_XDEL(set, cpu, result) \ 453 { result = atomic_clear_long_excl(&(set), (cpu)); } 454 455 #else /* CPUSET_WORDS <= 0 */ 456 457 #error NCPU is undefined or invalid 458 459 #endif /* CPUSET_WORDS */ 460 461 extern cpuset_t cpu_seqid_inuse; 462 463 #endif /* (_KERNEL || _KMEMUSER) && _MACHDEP */ 464 465 #define CPU_CPR_OFFLINE 0x0 466 #define CPU_CPR_ONLINE 0x1 467 #define CPU_CPR_IS_OFFLINE(cpu) (((cpu)->cpu_cpr_flags & CPU_CPR_ONLINE) == 0) 468 #define CPU_SET_CPR_FLAGS(cpu, flag) ((cpu)->cpu_cpr_flags |= flag) 469 470 #if defined(_KERNEL) || defined(_KMEMUSER) 471 472 extern struct cpu *cpu[]; /* indexed by CPU number */ 473 extern cpu_t *cpu_list; /* list of CPUs */ 474 extern int ncpus; /* number of CPUs present */ 475 extern int ncpus_online; /* number of CPUs not quiesced */ 476 extern int max_ncpus; /* max present before ncpus is known */ 477 extern int boot_max_ncpus; /* like max_ncpus but for real */ 478 extern processorid_t max_cpuid; /* maximum CPU number */ 479 extern struct cpu *cpu_inmotion; /* offline or partition move target */ 480 481 #if defined(__i386) || defined(__amd64) 482 extern struct cpu *curcpup(void); 483 #define CPU (curcpup()) /* Pointer to current CPU */ 484 #else 485 #define CPU (curthread->t_cpu) /* Pointer to current CPU */ 486 #endif 487 488 /* 489 * CPU_CURRENT indicates to thread_affinity_set to use CPU->cpu_id 490 * as the target and to grab cpu_lock instead of requiring the caller 491 * to grab it. 492 */ 493 #define CPU_CURRENT -3 494 495 /* 496 * Per-CPU statistics 497 * 498 * cpu_stats_t contains numerous system and VM-related statistics, in the form 499 * of gauges or monotonically-increasing event occurrence counts. 500 */ 501 502 #define CPU_STATS_ENTER_K() kpreempt_disable() 503 #define CPU_STATS_EXIT_K() kpreempt_enable() 504 505 #define CPU_STATS_ADD_K(class, stat, amount) \ 506 { kpreempt_disable(); /* keep from switching CPUs */\ 507 CPU_STATS_ADDQ(CPU, class, stat, amount); \ 508 kpreempt_enable(); \ 509 } 510 511 #define CPU_STATS_ADDQ(cp, class, stat, amount) { \ 512 extern void __dtrace_probe___cpu_##class##info_##stat(uint_t, \ 513 uint64_t *, cpu_t *); \ 514 uint64_t *stataddr = &((cp)->cpu_stats.class.stat); \ 515 __dtrace_probe___cpu_##class##info_##stat((amount), \ 516 stataddr, cp); \ 517 *(stataddr) += (amount); \ 518 } 519 520 #define CPU_STATS(cp, stat) \ 521 ((cp)->cpu_stats.stat) 522 523 #endif /* _KERNEL || _KMEMUSER */ 524 525 /* 526 * CPU support routines. 527 */ 528 #if defined(_KERNEL) && defined(__STDC__) /* not for genassym.c */ 529 530 struct zone; 531 532 void cpu_list_init(cpu_t *); 533 void cpu_add_unit(cpu_t *); 534 void cpu_del_unit(int cpuid); 535 void cpu_add_active(cpu_t *); 536 void cpu_kstat_init(cpu_t *); 537 void cpu_visibility_add(cpu_t *, struct zone *); 538 void cpu_visibility_remove(cpu_t *, struct zone *); 539 void cpu_visibility_configure(cpu_t *, struct zone *); 540 void cpu_visibility_unconfigure(cpu_t *, struct zone *); 541 void cpu_visibility_online(cpu_t *, struct zone *); 542 void cpu_visibility_offline(cpu_t *, struct zone *); 543 void cpu_create_intrstat(cpu_t *); 544 void cpu_delete_intrstat(cpu_t *); 545 int cpu_kstat_intrstat_update(kstat_t *, int); 546 void cpu_intr_swtch_enter(kthread_t *); 547 void cpu_intr_swtch_exit(kthread_t *); 548 549 void mbox_lock_init(void); /* initialize cross-call locks */ 550 void mbox_init(int cpun); /* initialize cross-calls */ 551 void poke_cpu(int cpun); /* interrupt another CPU (to preempt) */ 552 553 void pause_cpus(cpu_t *off_cp); 554 void start_cpus(void); 555 int cpus_paused(void); 556 557 void cpu_pause_init(void); 558 cpu_t *cpu_get(processorid_t cpun); /* get the CPU struct associated */ 559 560 int cpu_online(cpu_t *cp); /* take cpu online */ 561 int cpu_offline(cpu_t *cp, int flags); /* take cpu offline */ 562 int cpu_spare(cpu_t *cp, int flags); /* take cpu to spare */ 563 int cpu_faulted(cpu_t *cp, int flags); /* take cpu to faulted */ 564 int cpu_poweron(cpu_t *cp); /* take powered-off cpu to offline */ 565 int cpu_poweroff(cpu_t *cp); /* take offline cpu to powered-off */ 566 567 cpu_t *cpu_intr_next(cpu_t *cp); /* get next online CPU taking intrs */ 568 int cpu_intr_count(cpu_t *cp); /* count # of CPUs handling intrs */ 569 int cpu_intr_on(cpu_t *cp); /* CPU taking I/O interrupts? */ 570 void cpu_intr_enable(cpu_t *cp); /* enable I/O interrupts */ 571 int cpu_intr_disable(cpu_t *cp); /* disable I/O interrupts */ 572 573 /* 574 * Routines for checking CPU states. 575 */ 576 int cpu_is_online(cpu_t *); /* check if CPU is online */ 577 int cpu_is_nointr(cpu_t *); /* check if CPU can service intrs */ 578 int cpu_is_active(cpu_t *); /* check if CPU can run threads */ 579 int cpu_is_offline(cpu_t *); /* check if CPU is offline */ 580 int cpu_is_poweredoff(cpu_t *); /* check if CPU is powered off */ 581 582 int cpu_flagged_online(cpu_flag_t); /* flags show CPU is online */ 583 int cpu_flagged_nointr(cpu_flag_t); /* flags show CPU not handling intrs */ 584 int cpu_flagged_active(cpu_flag_t); /* flags show CPU scheduling threads */ 585 int cpu_flagged_offline(cpu_flag_t); /* flags show CPU is offline */ 586 int cpu_flagged_poweredoff(cpu_flag_t); /* flags show CPU is powered off */ 587 588 /* 589 * The processor_info(2) state of a CPU is a simplified representation suitable 590 * for use by an application program. Kernel subsystems should utilize the 591 * internal per-CPU state as given by the cpu_flags member of the cpu structure, 592 * as this information may include platform- or architecture-specific state 593 * critical to a subsystem's disposition of a particular CPU. 594 */ 595 void cpu_set_state(cpu_t *); /* record/timestamp current state */ 596 int cpu_get_state(cpu_t *); /* get current cpu state */ 597 const char *cpu_get_state_str(cpu_t *); /* get current cpu state as string */ 598 599 int cpu_configure(int); 600 int cpu_unconfigure(int); 601 void cpu_destroy_bound_threads(cpu_t *cp); 602 603 extern int cpu_bind_thread(kthread_t *tp, processorid_t bind, 604 processorid_t *obind, int *error); 605 extern int cpu_unbind(processorid_t cpu_id); 606 extern void thread_affinity_set(kthread_t *t, int cpu_id); 607 extern void thread_affinity_clear(kthread_t *t); 608 extern void affinity_set(int cpu_id); 609 extern void affinity_clear(void); 610 extern void init_cpu_mstate(struct cpu *, int); 611 extern void term_cpu_mstate(struct cpu *); 612 extern void new_cpu_mstate(struct cpu *, int); 613 extern void thread_nomigrate(void); 614 extern void thread_allowmigrate(void); 615 extern void weakbinding_stop(void); 616 extern void weakbinding_start(void); 617 618 /* 619 * The following routines affect the CPUs participation in interrupt processing, 620 * if that is applicable on the architecture. This only affects interrupts 621 * which aren't directed at the processor (not cross calls). 622 * 623 * cpu_disable_intr returns non-zero if interrupts were previously enabled. 624 */ 625 int cpu_disable_intr(struct cpu *cp); /* stop issuing interrupts to cpu */ 626 void cpu_enable_intr(struct cpu *cp); /* start issuing interrupts to cpu */ 627 628 /* 629 * The mutex cpu_lock protects cpu_flags for all CPUs, as well as the ncpus 630 * and ncpus_online counts. 631 */ 632 extern kmutex_t cpu_lock; /* lock protecting CPU data */ 633 634 typedef enum { 635 CPU_INIT, 636 CPU_CONFIG, 637 CPU_UNCONFIG, 638 CPU_ON, 639 CPU_OFF, 640 CPU_CPUPART_IN, 641 CPU_CPUPART_OUT 642 } cpu_setup_t; 643 644 typedef int cpu_setup_func_t(cpu_setup_t, int, void *); 645 646 /* 647 * Routines used to register interest in cpu's being added to or removed 648 * from the system. 649 */ 650 extern void register_cpu_setup_func(cpu_setup_func_t *, void *); 651 extern void unregister_cpu_setup_func(cpu_setup_func_t *, void *); 652 extern void cpu_state_change_notify(int, cpu_setup_t); 653 654 /* 655 * Create various strings that describe the given CPU for the 656 * processor_info system call and configuration-related kstats. 657 */ 658 #define CPU_IDSTRLEN 100 659 660 extern void init_cpu_info(struct cpu *); 661 662 #endif /* _KERNEL */ 663 664 #ifdef __cplusplus 665 } 666 #endif 667 668 #endif /* _SYS_CPUVAR_H */ 669