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 (c) 1989, 2010, Oracle and/or its affiliates. All rights reserved. 24 * Copyright (c) 2012 by Delphix. All rights reserved. 25 * Copyright 2014 Igor Kozhukhov <ikozhukhov@gmail.com>. 26 * Copyright 2017 RackTop Systems. 27 * Copyright 2019 Joyent, Inc. 28 */ 29 30 #ifndef _SYS_CPUVAR_H 31 #define _SYS_CPUVAR_H 32 33 #include <sys/thread.h> 34 #include <sys/sysinfo.h> /* has cpu_stat_t definition */ 35 #include <sys/disp.h> 36 #include <sys/processor.h> 37 #include <sys/kcpc.h> /* has kcpc_ctx_t definition */ 38 39 #include <sys/loadavg.h> 40 #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP) 41 #include <sys/machcpuvar.h> 42 #endif 43 44 #include <sys/types.h> 45 #include <sys/file.h> 46 #include <sys/bitmap.h> 47 #include <sys/rwlock.h> 48 #include <sys/msacct.h> 49 #if defined(__GNUC__) && defined(_ASM_INLINES) && defined(_KERNEL) && \ 50 (defined(__i386) || defined(__amd64)) 51 #include <asm/cpuvar.h> 52 #endif 53 54 #ifdef __cplusplus 55 extern "C" { 56 #endif 57 58 struct squeue_set_s; 59 60 #define CPU_CACHE_COHERENCE_SIZE 64 61 62 /* 63 * For fast event tracing. 64 */ 65 struct ftrace_record; 66 typedef struct ftrace_data { 67 int ftd_state; /* ftrace flags */ 68 kmutex_t ftd_unused; /* ftrace buffer lock, unused */ 69 struct ftrace_record *ftd_cur; /* current record */ 70 struct ftrace_record *ftd_first; /* first record */ 71 struct ftrace_record *ftd_last; /* last record */ 72 } ftrace_data_t; 73 74 struct cyc_cpu; 75 struct nvlist; 76 77 /* 78 * Per-CPU data. 79 * 80 * Be careful adding new members: if they are not the same in all modules (e.g. 81 * change size depending on a #define), CTF uniquification can fail to work 82 * properly. Furthermore, this is transitive in that it applies recursively to 83 * all types pointed to by cpu_t. 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 int cpu_cache_offset; /* see kmem.c for details */ 98 99 /* 100 * Links to other CPUs. It is safe to walk these lists if 101 * one of the following is true: 102 * - cpu_lock held 103 * - preemption disabled via kpreempt_disable 104 * - PIL >= DISP_LEVEL 105 * - acting thread is an interrupt thread 106 * - all other CPUs are paused 107 */ 108 struct cpu *cpu_next; /* next existing CPU */ 109 struct cpu *cpu_prev; /* prev existing CPU */ 110 struct cpu *cpu_next_onln; /* next online (enabled) CPU */ 111 struct cpu *cpu_prev_onln; /* prev online (enabled) CPU */ 112 struct cpu *cpu_next_part; /* next CPU in partition */ 113 struct cpu *cpu_prev_part; /* prev CPU in partition */ 114 struct cpu *cpu_next_lgrp; /* next CPU in latency group */ 115 struct cpu *cpu_prev_lgrp; /* prev CPU in latency group */ 116 struct cpu *cpu_next_lpl; /* next CPU in lgrp partition */ 117 struct cpu *cpu_prev_lpl; 118 119 struct cpu_pg *cpu_pg; /* cpu's processor groups */ 120 121 void *cpu_reserved[4]; /* reserved for future use */ 122 123 /* 124 * Scheduling variables. 125 */ 126 disp_t *cpu_disp; /* dispatch queue data */ 127 /* 128 * Note that cpu_disp is set before the CPU is added to the system 129 * and is never modified. Hence, no additional locking is needed 130 * beyond what's necessary to access the cpu_t structure. 131 */ 132 char cpu_runrun; /* scheduling flag - set to preempt */ 133 char cpu_kprunrun; /* force kernel preemption */ 134 pri_t cpu_chosen_level; /* priority at which cpu */ 135 /* was chosen for scheduling */ 136 kthread_t *cpu_dispthread; /* thread selected for dispatch */ 137 disp_lock_t cpu_thread_lock; /* dispatcher lock on current thread */ 138 uint8_t cpu_disp_flags; /* flags used by dispatcher */ 139 /* 140 * The following field is updated when ever the cpu_dispthread 141 * changes. Also in places, where the current thread(cpu_dispthread) 142 * priority changes. This is used in disp_lowpri_cpu() 143 */ 144 pri_t cpu_dispatch_pri; /* priority of cpu_dispthread */ 145 clock_t cpu_last_swtch; /* last time switched to new thread */ 146 147 /* 148 * Interrupt data. 149 */ 150 caddr_t cpu_intr_stack; /* interrupt stack */ 151 kthread_t *cpu_intr_thread; /* interrupt thread list */ 152 uint_t cpu_intr_actv; /* interrupt levels active (bitmask) */ 153 int cpu_base_spl; /* priority for highest rupt active */ 154 155 /* 156 * Statistics. 157 */ 158 cpu_stats_t cpu_stats; /* per-CPU statistics */ 159 struct kstat *cpu_info_kstat; /* kstat for cpu info */ 160 161 uintptr_t cpu_profile_pc; /* kernel PC in profile interrupt */ 162 uintptr_t cpu_profile_upc; /* user PC in profile interrupt */ 163 uintptr_t cpu_profile_pil; /* PIL when profile interrupted */ 164 165 ftrace_data_t cpu_ftrace; /* per cpu ftrace data */ 166 167 clock_t cpu_deadman_counter; /* used by deadman() */ 168 uint_t cpu_deadman_countdown; /* used by deadman() */ 169 170 kmutex_t cpu_cpc_ctxlock; /* protects context for idle thread */ 171 kcpc_ctx_t *cpu_cpc_ctx; /* performance counter context */ 172 173 /* 174 * Configuration information for the processor_info system call. 175 */ 176 processor_info_t cpu_type_info; /* config info */ 177 time_t cpu_state_begin; /* when CPU entered current state */ 178 char cpu_cpr_flags; /* CPR related info */ 179 struct cyc_cpu *cpu_cyclic; /* per cpu cyclic subsystem data */ 180 struct squeue_set_s *cpu_squeue_set; /* per cpu squeue set */ 181 struct nvlist *cpu_props; /* pool-related properties */ 182 183 krwlock_t cpu_ft_lock; /* DTrace: fasttrap lock */ 184 uintptr_t cpu_dtrace_caller; /* DTrace: caller, if any */ 185 hrtime_t cpu_dtrace_chillmark; /* DTrace: chill mark time */ 186 hrtime_t cpu_dtrace_chilled; /* DTrace: total chill time */ 187 uint64_t cpu_dtrace_probes; /* DTrace: total probes fired */ 188 hrtime_t cpu_dtrace_nsec; /* DTrace: ns in dtrace_probe */ 189 190 volatile uint16_t cpu_mstate; /* cpu microstate */ 191 volatile uint16_t cpu_mstate_gen; /* generation counter */ 192 volatile hrtime_t cpu_mstate_start; /* cpu microstate start time */ 193 volatile hrtime_t cpu_acct[NCMSTATES]; /* cpu microstate data */ 194 hrtime_t cpu_intracct[NCMSTATES]; /* interrupt mstate data */ 195 hrtime_t cpu_waitrq; /* cpu run-queue wait time */ 196 struct loadavg_s cpu_loadavg; /* loadavg info for this cpu */ 197 198 char *cpu_idstr; /* for printing and debugging */ 199 char *cpu_brandstr; /* for printing */ 200 201 /* 202 * Sum of all device interrupt weights that are currently directed at 203 * this cpu. Cleared at start of interrupt redistribution. 204 */ 205 int32_t cpu_intr_weight; 206 void *cpu_vm_data; 207 208 struct cpu_physid *cpu_physid; /* physical associations */ 209 210 uint64_t cpu_curr_clock; /* current clock freq in Hz */ 211 char *cpu_supp_freqs; /* supported freqs in Hz */ 212 213 uintptr_t cpu_cpcprofile_pc; /* kernel PC in cpc interrupt */ 214 uintptr_t cpu_cpcprofile_upc; /* user PC in cpc interrupt */ 215 216 /* 217 * Interrupt load factor used by dispatcher & softcall 218 */ 219 hrtime_t cpu_intrlast; /* total interrupt time (nsec) */ 220 int cpu_intrload; /* interrupt load factor (0-99%) */ 221 222 uint_t cpu_rotor; /* for cheap pseudo-random numbers */ 223 224 struct cu_cpu_info *cpu_cu_info; /* capacity & util. info */ 225 226 /* 227 * cpu_generation is updated whenever CPU goes on-line or off-line. 228 * Updates to cpu_generation are protected by cpu_lock. 229 * 230 * See CPU_NEW_GENERATION() macro below. 231 */ 232 volatile uint_t cpu_generation; /* tracking on/off-line */ 233 234 /* 235 * New members must be added /before/ this member, as the CTF tools 236 * rely on this being the last field before cpu_m, so they can 237 * correctly calculate the offset when synthetically adding the cpu_m 238 * member in objects that do not have it. This fixup is required for 239 * uniquification to work correctly. 240 */ 241 uintptr_t cpu_m_pad; 242 243 #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP) 244 struct machcpu cpu_m; /* per architecture info */ 245 #endif 246 } cpu_t; 247 248 /* 249 * The cpu_core structure consists of per-CPU state available in any context. 250 * On some architectures, this may mean that the page(s) containing the 251 * NCPU-sized array of cpu_core structures must be locked in the TLB -- it 252 * is up to the platform to assure that this is performed properly. Note that 253 * the structure is sized to avoid false sharing. 254 */ 255 #define CPUC_SIZE (sizeof (uint16_t) + sizeof (uint8_t) + \ 256 sizeof (uintptr_t) + sizeof (kmutex_t)) 257 #define CPUC_PADSIZE CPU_CACHE_COHERENCE_SIZE - CPUC_SIZE 258 259 typedef struct cpu_core { 260 uint16_t cpuc_dtrace_flags; /* DTrace flags */ 261 uint8_t cpuc_dcpc_intr_state; /* DCPC provider intr state */ 262 uint8_t cpuc_pad[CPUC_PADSIZE]; /* padding */ 263 uintptr_t cpuc_dtrace_illval; /* DTrace illegal value */ 264 kmutex_t cpuc_pid_lock; /* DTrace pid provider lock */ 265 } cpu_core_t; 266 267 #ifdef _KERNEL 268 extern cpu_core_t cpu_core[]; 269 #endif /* _KERNEL */ 270 271 /* 272 * CPU_ON_INTR() macro. Returns non-zero if currently on interrupt stack. 273 * Note that this isn't a test for a high PIL. For example, cpu_intr_actv 274 * does not get updated when we go through sys_trap from TL>0 at high PIL. 275 * getpil() should be used instead to check for PIL levels. 276 */ 277 #define CPU_ON_INTR(cpup) ((cpup)->cpu_intr_actv >> (LOCK_LEVEL + 1)) 278 279 /* 280 * Check to see if an interrupt thread might be active at a given ipl. 281 * If so return true. 282 * We must be conservative--it is ok to give a false yes, but a false no 283 * will cause disaster. (But if the situation changes after we check it is 284 * ok--the caller is trying to ensure that an interrupt routine has been 285 * exited). 286 * This is used when trying to remove an interrupt handler from an autovector 287 * list in avintr.c. 288 */ 289 #define INTR_ACTIVE(cpup, level) \ 290 ((level) <= LOCK_LEVEL ? \ 291 ((cpup)->cpu_intr_actv & (1 << (level))) : (CPU_ON_INTR(cpup))) 292 293 /* 294 * CPU_PSEUDO_RANDOM() returns a per CPU value that changes each time one 295 * looks at it. It's meant as a cheap mechanism to be incorporated in routines 296 * wanting to avoid biasing, but where true randomness isn't needed (just 297 * something that changes). 298 */ 299 #define CPU_PSEUDO_RANDOM() (CPU->cpu_rotor++) 300 301 #if defined(_KERNEL) || defined(_KMEMUSER) || defined(_BOOT) 302 303 #define INTR_STACK_SIZE MAX(DEFAULTSTKSZ, PAGESIZE) 304 305 /* MEMBERS PROTECTED BY "atomicity": cpu_flags */ 306 307 /* 308 * Flags in the CPU structure. 309 * 310 * These are protected by cpu_lock (except during creation). 311 * 312 * Offlined-CPUs have three stages of being offline: 313 * 314 * CPU_ENABLE indicates that the CPU is participating in I/O interrupts 315 * that can be directed at a number of different CPUs. If CPU_ENABLE 316 * is off, the CPU will not be given interrupts that can be sent elsewhere, 317 * but will still get interrupts from devices associated with that CPU only, 318 * and from other CPUs. 319 * 320 * CPU_OFFLINE indicates that the dispatcher should not allow any threads 321 * other than interrupt threads to run on that CPU. A CPU will not have 322 * CPU_OFFLINE set if there are any bound threads (besides interrupts). 323 * 324 * CPU_QUIESCED is set if p_offline was able to completely turn idle the 325 * CPU and it will not have to run interrupt threads. In this case it'll 326 * stay in the idle loop until CPU_QUIESCED is turned off. 327 * 328 * CPU_FROZEN is used only by CPR to mark CPUs that have been successfully 329 * suspended (in the suspend path), or have yet to be resumed (in the resume 330 * case). 331 * 332 * On some platforms CPUs can be individually powered off. 333 * The following flags are set for powered off CPUs: CPU_QUIESCED, 334 * CPU_OFFLINE, and CPU_POWEROFF. The following flags are cleared: 335 * CPU_RUNNING, CPU_READY, CPU_EXISTS, and CPU_ENABLE. 336 */ 337 #define CPU_RUNNING 0x001 /* CPU running */ 338 #define CPU_READY 0x002 /* CPU ready for cross-calls */ 339 #define CPU_QUIESCED 0x004 /* CPU will stay in idle */ 340 #define CPU_EXISTS 0x008 /* CPU is configured */ 341 #define CPU_ENABLE 0x010 /* CPU enabled for interrupts */ 342 #define CPU_OFFLINE 0x020 /* CPU offline via p_online */ 343 #define CPU_POWEROFF 0x040 /* CPU is powered off */ 344 #define CPU_FROZEN 0x080 /* CPU is frozen via CPR suspend */ 345 #define CPU_SPARE 0x100 /* CPU offline available for use */ 346 #define CPU_FAULTED 0x200 /* CPU offline diagnosed faulty */ 347 348 #define FMT_CPU_FLAGS \ 349 "\20\12fault\11spare\10frozen" \ 350 "\7poweroff\6offline\5enable\4exist\3quiesced\2ready\1run" 351 352 #define CPU_ACTIVE(cpu) (((cpu)->cpu_flags & CPU_OFFLINE) == 0) 353 354 /* 355 * Flags for cpu_offline(), cpu_faulted(), and cpu_spare(). 356 */ 357 #define CPU_FORCED 0x0001 /* Force CPU offline */ 358 359 /* 360 * DTrace flags. 361 */ 362 #define CPU_DTRACE_NOFAULT 0x0001 /* Don't fault */ 363 #define CPU_DTRACE_DROP 0x0002 /* Drop this ECB */ 364 #define CPU_DTRACE_BADADDR 0x0004 /* DTrace fault: bad address */ 365 #define CPU_DTRACE_BADALIGN 0x0008 /* DTrace fault: bad alignment */ 366 #define CPU_DTRACE_DIVZERO 0x0010 /* DTrace fault: divide by zero */ 367 #define CPU_DTRACE_ILLOP 0x0020 /* DTrace fault: illegal operation */ 368 #define CPU_DTRACE_NOSCRATCH 0x0040 /* DTrace fault: out of scratch */ 369 #define CPU_DTRACE_KPRIV 0x0080 /* DTrace fault: bad kernel access */ 370 #define CPU_DTRACE_UPRIV 0x0100 /* DTrace fault: bad user access */ 371 #define CPU_DTRACE_TUPOFLOW 0x0200 /* DTrace fault: tuple stack overflow */ 372 #if defined(__sparc) 373 #define CPU_DTRACE_FAKERESTORE 0x0400 /* pid provider hint to getreg */ 374 #endif 375 #define CPU_DTRACE_ENTRY 0x0800 /* pid provider hint to ustack() */ 376 #define CPU_DTRACE_BADSTACK 0x1000 /* DTrace fault: bad stack */ 377 378 #define CPU_DTRACE_FAULT (CPU_DTRACE_BADADDR | CPU_DTRACE_BADALIGN | \ 379 CPU_DTRACE_DIVZERO | CPU_DTRACE_ILLOP | \ 380 CPU_DTRACE_NOSCRATCH | CPU_DTRACE_KPRIV | \ 381 CPU_DTRACE_UPRIV | CPU_DTRACE_TUPOFLOW | \ 382 CPU_DTRACE_BADSTACK) 383 #define CPU_DTRACE_ERROR (CPU_DTRACE_FAULT | CPU_DTRACE_DROP) 384 385 /* 386 * Dispatcher flags 387 * These flags must be changed only by the current CPU. 388 */ 389 #define CPU_DISP_DONTSTEAL 0x01 /* CPU undergoing context swtch */ 390 #define CPU_DISP_HALTED 0x02 /* CPU halted waiting for interrupt */ 391 392 /* 393 * Macros for manipulating sets of CPUs as a bitmap. Note that this 394 * bitmap may vary in size depending on the maximum CPU id a specific 395 * platform supports. This may be different than the number of CPUs 396 * the platform supports, since CPU ids can be sparse. We define two 397 * sets of macros; one for platforms where the maximum CPU id is less 398 * than the number of bits in a single word (32 in a 32-bit kernel, 399 * 64 in a 64-bit kernel), and one for platforms that require bitmaps 400 * of more than one word. 401 */ 402 403 #define CPUSET_WORDS BT_BITOUL(NCPU) 404 #define CPUSET_NOTINSET ((uint_t)-1) 405 406 #if defined(_MACHDEP) 407 struct cpuset { 408 ulong_t cpub[CPUSET_WORDS]; 409 }; 410 #else 411 struct cpuset; 412 #endif 413 414 typedef struct cpuset cpuset_t; 415 416 extern cpuset_t *cpuset_alloc(int); 417 extern void cpuset_free(cpuset_t *); 418 419 /* 420 * Functions for manipulating cpusets. These were previously considered 421 * private when some cpuset_t handling was performed in the CPUSET_* macros. 422 * They are now acceptable to use in non-_MACHDEP code. 423 */ 424 extern void cpuset_all(cpuset_t *); 425 extern void cpuset_all_but(cpuset_t *, const uint_t); 426 extern int cpuset_isnull(const cpuset_t *); 427 extern int cpuset_isequal(const cpuset_t *, const cpuset_t *); 428 extern void cpuset_only(cpuset_t *, const uint_t); 429 extern long cpu_in_set(const cpuset_t *, const uint_t); 430 extern void cpuset_add(cpuset_t *, const uint_t); 431 extern void cpuset_del(cpuset_t *, const uint_t); 432 extern uint_t cpuset_find(const cpuset_t *); 433 extern void cpuset_bounds(const cpuset_t *, uint_t *, uint_t *); 434 extern void cpuset_atomic_del(cpuset_t *, const uint_t); 435 extern void cpuset_atomic_add(cpuset_t *, const uint_t); 436 extern long cpuset_atomic_xadd(cpuset_t *, const uint_t); 437 extern long cpuset_atomic_xdel(cpuset_t *, const uint_t); 438 extern void cpuset_or(cpuset_t *, cpuset_t *); 439 extern void cpuset_xor(cpuset_t *, cpuset_t *); 440 extern void cpuset_and(cpuset_t *, cpuset_t *); 441 extern void cpuset_zero(cpuset_t *); 442 443 444 #if defined(_MACHDEP) 445 446 /* 447 * Prior to the cpuset_t restructuring, the CPUSET_* macros contained 448 * significant logic, rather than directly invoking the backend functions. 449 * They are maintained here so that existing _MACHDEP code can use them. 450 */ 451 452 #define CPUSET_ALL(set) cpuset_all(&(set)) 453 #define CPUSET_ALL_BUT(set, cpu) cpuset_all_but(&(set), cpu) 454 #define CPUSET_ONLY(set, cpu) cpuset_only(&(set), cpu) 455 #define CPU_IN_SET(set, cpu) cpu_in_set(&(set), cpu) 456 #define CPUSET_ADD(set, cpu) cpuset_add(&(set), cpu) 457 #define CPUSET_DEL(set, cpu) cpuset_del(&(set), cpu) 458 #define CPUSET_ISNULL(set) cpuset_isnull(&(set)) 459 #define CPUSET_ISEQUAL(set1, set2) cpuset_isequal(&(set1), &(set2)) 460 461 /* 462 * Find one CPU in the cpuset. 463 * Sets "cpu" to the id of the found CPU, or CPUSET_NOTINSET if no cpu 464 * could be found. (i.e. empty set) 465 */ 466 #define CPUSET_FIND(set, cpu) { \ 467 cpu = cpuset_find(&(set)); \ 468 } 469 470 /* 471 * Determine the smallest and largest CPU id in the set. Returns 472 * CPUSET_NOTINSET in smallest and largest when set is empty. 473 */ 474 #define CPUSET_BOUNDS(set, smallest, largest) { \ 475 cpuset_bounds(&(set), &(smallest), &(largest)); \ 476 } 477 478 /* 479 * Atomic cpuset operations 480 * These are safe to use for concurrent cpuset manipulations. 481 * "xdel" and "xadd" are exclusive operations, that set "result" to "0" 482 * if the add or del was successful, or "-1" if not successful. 483 * (e.g. attempting to add a cpu to a cpuset that's already there, or 484 * deleting a cpu that's not in the cpuset) 485 */ 486 487 #define CPUSET_ATOMIC_DEL(set, cpu) cpuset_atomic_del(&(set), cpu) 488 #define CPUSET_ATOMIC_ADD(set, cpu) cpuset_atomic_add(&(set), cpu) 489 490 #define CPUSET_ATOMIC_XADD(set, cpu, result) \ 491 (result) = cpuset_atomic_xadd(&(set), cpu) 492 493 #define CPUSET_ATOMIC_XDEL(set, cpu, result) \ 494 (result) = cpuset_atomic_xdel(&(set), cpu) 495 496 #define CPUSET_OR(set1, set2) cpuset_or(&(set1), &(set2)) 497 498 #define CPUSET_XOR(set1, set2) cpuset_xor(&(set1), &(set2)) 499 500 #define CPUSET_AND(set1, set2) cpuset_and(&(set1), &(set2)) 501 502 #define CPUSET_ZERO(set) cpuset_zero(&(set)) 503 504 #endif /* defined(_MACHDEP) */ 505 506 507 extern cpuset_t cpu_seqid_inuse; 508 509 extern struct cpu *cpu[]; /* indexed by CPU number */ 510 extern struct cpu **cpu_seq; /* indexed by sequential CPU id */ 511 extern cpu_t *cpu_list; /* list of CPUs */ 512 extern cpu_t *cpu_active; /* list of active CPUs */ 513 extern cpuset_t cpu_active_set; /* cached set of active CPUs */ 514 extern int ncpus; /* number of CPUs present */ 515 extern int ncpus_online; /* number of CPUs not quiesced */ 516 extern int max_ncpus; /* max present before ncpus is known */ 517 extern int boot_max_ncpus; /* like max_ncpus but for real */ 518 extern int boot_ncpus; /* # cpus present @ boot */ 519 extern processorid_t max_cpuid; /* maximum CPU number */ 520 extern struct cpu *cpu_inmotion; /* offline or partition move target */ 521 extern cpu_t *clock_cpu_list; 522 extern processorid_t max_cpu_seqid_ever; /* maximum seqid ever given */ 523 524 #if defined(__i386) || defined(__amd64) 525 extern struct cpu *curcpup(void); 526 #define CPU (curcpup()) /* Pointer to current CPU */ 527 #else 528 #define CPU (curthread->t_cpu) /* Pointer to current CPU */ 529 #endif 530 531 /* 532 * CPU_CURRENT indicates to thread_affinity_set to use CPU->cpu_id 533 * as the target and to grab cpu_lock instead of requiring the caller 534 * to grab it. 535 */ 536 #define CPU_CURRENT -3 537 538 /* 539 * Per-CPU statistics 540 * 541 * cpu_stats_t contains numerous system and VM-related statistics, in the form 542 * of gauges or monotonically-increasing event occurrence counts. 543 */ 544 545 #define CPU_STATS_ENTER_K() kpreempt_disable() 546 #define CPU_STATS_EXIT_K() kpreempt_enable() 547 548 #define CPU_STATS_ADD_K(class, stat, amount) \ 549 { kpreempt_disable(); /* keep from switching CPUs */\ 550 CPU_STATS_ADDQ(CPU, class, stat, amount); \ 551 kpreempt_enable(); \ 552 } 553 554 #define CPU_STATS_ADDQ(cp, class, stat, amount) { \ 555 extern void __dtrace_probe___cpu_##class##info_##stat(uint_t, \ 556 uint64_t *, cpu_t *); \ 557 uint64_t *stataddr = &((cp)->cpu_stats.class.stat); \ 558 __dtrace_probe___cpu_##class##info_##stat((amount), \ 559 stataddr, cp); \ 560 *(stataddr) += (amount); \ 561 } 562 563 #define CPU_STATS(cp, stat) \ 564 ((cp)->cpu_stats.stat) 565 566 /* 567 * Increment CPU generation value. 568 * This macro should be called whenever CPU goes on-line or off-line. 569 * Updates to cpu_generation should be protected by cpu_lock. 570 */ 571 #define CPU_NEW_GENERATION(cp) ((cp)->cpu_generation++) 572 573 #endif /* defined(_KERNEL) || defined(_KMEMUSER) */ 574 575 #define CPU_CPR_OFFLINE 0x0 576 #define CPU_CPR_ONLINE 0x1 577 #define CPU_CPR_IS_OFFLINE(cpu) (((cpu)->cpu_cpr_flags & CPU_CPR_ONLINE) == 0) 578 #define CPU_CPR_IS_ONLINE(cpu) ((cpu)->cpu_cpr_flags & CPU_CPR_ONLINE) 579 #define CPU_SET_CPR_FLAGS(cpu, flag) ((cpu)->cpu_cpr_flags |= flag) 580 581 /* 582 * CPU support routines (not for genassym.c) 583 */ 584 #if (defined(_KERNEL) || defined(_FAKE_KERNEL)) && defined(__STDC__) 585 586 struct zone; 587 588 void cpu_list_init(cpu_t *); 589 void cpu_add_unit(cpu_t *); 590 void cpu_del_unit(int cpuid); 591 void cpu_add_active(cpu_t *); 592 void cpu_kstat_init(cpu_t *); 593 void cpu_visibility_add(cpu_t *, struct zone *); 594 void cpu_visibility_remove(cpu_t *, struct zone *); 595 void cpu_visibility_configure(cpu_t *, struct zone *); 596 void cpu_visibility_unconfigure(cpu_t *, struct zone *); 597 void cpu_visibility_online(cpu_t *, struct zone *); 598 void cpu_visibility_offline(cpu_t *, struct zone *); 599 void cpu_create_intrstat(cpu_t *); 600 void cpu_delete_intrstat(cpu_t *); 601 int cpu_kstat_intrstat_update(kstat_t *, int); 602 void cpu_intr_swtch_enter(kthread_t *); 603 void cpu_intr_swtch_exit(kthread_t *); 604 605 void mbox_lock_init(void); /* initialize cross-call locks */ 606 void mbox_init(int cpun); /* initialize cross-calls */ 607 void poke_cpu(int cpun); /* interrupt another CPU (to preempt) */ 608 609 /* 610 * values for safe_list. Pause state that CPUs are in. 611 */ 612 #define PAUSE_IDLE 0 /* normal state */ 613 #define PAUSE_READY 1 /* paused thread ready to spl */ 614 #define PAUSE_WAIT 2 /* paused thread is spl-ed high */ 615 #define PAUSE_DIE 3 /* tell pause thread to leave */ 616 #define PAUSE_DEAD 4 /* pause thread has left */ 617 618 void mach_cpu_pause(volatile char *); 619 620 void pause_cpus(cpu_t *off_cp, void *(*func)(void *)); 621 void start_cpus(void); 622 int cpus_paused(void); 623 624 void cpu_pause_init(void); 625 cpu_t *cpu_get(processorid_t cpun); /* get the CPU struct associated */ 626 627 int cpu_online(cpu_t *cp); /* take cpu online */ 628 int cpu_offline(cpu_t *cp, int flags); /* take cpu offline */ 629 int cpu_spare(cpu_t *cp, int flags); /* take cpu to spare */ 630 int cpu_faulted(cpu_t *cp, int flags); /* take cpu to faulted */ 631 int cpu_poweron(cpu_t *cp); /* take powered-off cpu to offline */ 632 int cpu_poweroff(cpu_t *cp); /* take offline cpu to powered-off */ 633 634 cpu_t *cpu_intr_next(cpu_t *cp); /* get next online CPU taking intrs */ 635 int cpu_intr_count(cpu_t *cp); /* count # of CPUs handling intrs */ 636 int cpu_intr_on(cpu_t *cp); /* CPU taking I/O interrupts? */ 637 void cpu_intr_enable(cpu_t *cp); /* enable I/O interrupts */ 638 int cpu_intr_disable(cpu_t *cp); /* disable I/O interrupts */ 639 void cpu_intr_alloc(cpu_t *cp, int n); /* allocate interrupt threads */ 640 641 /* 642 * Routines for checking CPU states. 643 */ 644 int cpu_is_online(cpu_t *); /* check if CPU is online */ 645 int cpu_is_nointr(cpu_t *); /* check if CPU can service intrs */ 646 int cpu_is_active(cpu_t *); /* check if CPU can run threads */ 647 int cpu_is_offline(cpu_t *); /* check if CPU is offline */ 648 int cpu_is_poweredoff(cpu_t *); /* check if CPU is powered off */ 649 650 int cpu_flagged_online(cpu_flag_t); /* flags show CPU is online */ 651 int cpu_flagged_nointr(cpu_flag_t); /* flags show CPU not handling intrs */ 652 int cpu_flagged_active(cpu_flag_t); /* flags show CPU scheduling threads */ 653 int cpu_flagged_offline(cpu_flag_t); /* flags show CPU is offline */ 654 int cpu_flagged_poweredoff(cpu_flag_t); /* flags show CPU is powered off */ 655 656 /* 657 * The processor_info(2) state of a CPU is a simplified representation suitable 658 * for use by an application program. Kernel subsystems should utilize the 659 * internal per-CPU state as given by the cpu_flags member of the cpu structure, 660 * as this information may include platform- or architecture-specific state 661 * critical to a subsystem's disposition of a particular CPU. 662 */ 663 void cpu_set_state(cpu_t *); /* record/timestamp current state */ 664 int cpu_get_state(cpu_t *); /* get current cpu state */ 665 const char *cpu_get_state_str(cpu_t *); /* get current cpu state as string */ 666 667 668 void cpu_set_curr_clock(uint64_t); /* indicate the current CPU's freq */ 669 void cpu_set_supp_freqs(cpu_t *, const char *); /* set the CPU supported */ 670 /* frequencies */ 671 672 int cpu_configure(int); 673 int cpu_unconfigure(int); 674 void cpu_destroy_bound_threads(cpu_t *cp); 675 676 extern int cpu_bind_thread(kthread_t *tp, processorid_t bind, 677 processorid_t *obind, int *error); 678 extern int cpu_unbind(processorid_t cpu_id, boolean_t force); 679 extern void thread_affinity_set(kthread_t *t, int cpu_id); 680 extern void thread_affinity_clear(kthread_t *t); 681 extern void affinity_set(int cpu_id); 682 extern void affinity_clear(void); 683 extern void init_cpu_mstate(struct cpu *, int); 684 extern void term_cpu_mstate(struct cpu *); 685 extern void new_cpu_mstate(int, hrtime_t); 686 extern void get_cpu_mstate(struct cpu *, hrtime_t *); 687 extern void thread_nomigrate(void); 688 extern void thread_allowmigrate(void); 689 extern void weakbinding_stop(void); 690 extern void weakbinding_start(void); 691 692 /* 693 * The following routines affect the CPUs participation in interrupt processing, 694 * if that is applicable on the architecture. This only affects interrupts 695 * which aren't directed at the processor (not cross calls). 696 * 697 * cpu_disable_intr returns non-zero if interrupts were previously enabled. 698 */ 699 int cpu_disable_intr(struct cpu *cp); /* stop issuing interrupts to cpu */ 700 void cpu_enable_intr(struct cpu *cp); /* start issuing interrupts to cpu */ 701 702 /* 703 * The mutex cpu_lock protects cpu_flags for all CPUs, as well as the ncpus 704 * and ncpus_online counts. 705 */ 706 extern kmutex_t cpu_lock; /* lock protecting CPU data */ 707 708 /* 709 * CPU state change events 710 * 711 * Various subsystems need to know when CPUs change their state. They get this 712 * information by registering CPU state change callbacks using 713 * register_cpu_setup_func(). Whenever any CPU changes its state, the callback 714 * function is called. The callback function is passed three arguments: 715 * 716 * Event, described by cpu_setup_t 717 * CPU ID 718 * Transparent pointer passed when registering the callback 719 * 720 * The callback function is called with cpu_lock held. The return value from the 721 * callback function is usually ignored, except for CPU_CONFIG and CPU_UNCONFIG 722 * events. For these two events, non-zero return value indicates a failure and 723 * prevents successful completion of the operation. 724 * 725 * New events may be added in the future. Callback functions should ignore any 726 * events that they do not understand. 727 * 728 * The following events provide notification callbacks: 729 * 730 * CPU_INIT A new CPU is started and added to the list of active CPUs 731 * This event is only used during boot 732 * 733 * CPU_CONFIG A newly inserted CPU is prepared for starting running code 734 * This event is called by DR code 735 * 736 * CPU_UNCONFIG CPU has been powered off and needs cleanup 737 * This event is called by DR code 738 * 739 * CPU_ON CPU is enabled but does not run anything yet 740 * 741 * CPU_INTR_ON CPU is enabled and has interrupts enabled 742 * 743 * CPU_OFF CPU is going offline but can still run threads 744 * 745 * CPU_CPUPART_OUT CPU is going to move out of its partition 746 * 747 * CPU_CPUPART_IN CPU is going to move to a new partition 748 * 749 * CPU_SETUP CPU is set up during boot and can run threads 750 */ 751 typedef enum { 752 CPU_INIT, 753 CPU_CONFIG, 754 CPU_UNCONFIG, 755 CPU_ON, 756 CPU_OFF, 757 CPU_CPUPART_IN, 758 CPU_CPUPART_OUT, 759 CPU_SETUP, 760 CPU_INTR_ON 761 } cpu_setup_t; 762 763 typedef int cpu_setup_func_t(cpu_setup_t, int, void *); 764 765 /* 766 * Routines used to register interest in cpu's being added to or removed 767 * from the system. 768 */ 769 extern void register_cpu_setup_func(cpu_setup_func_t *, void *); 770 extern void unregister_cpu_setup_func(cpu_setup_func_t *, void *); 771 extern void cpu_state_change_notify(int, cpu_setup_t); 772 773 /* 774 * Call specified function on the given CPU 775 */ 776 typedef void (*cpu_call_func_t)(uintptr_t, uintptr_t); 777 extern void cpu_call(cpu_t *, cpu_call_func_t, uintptr_t, uintptr_t); 778 779 780 /* 781 * Create various strings that describe the given CPU for the 782 * processor_info system call and configuration-related kstats. 783 */ 784 #define CPU_IDSTRLEN 100 785 786 extern void init_cpu_info(struct cpu *); 787 extern void populate_idstr(struct cpu *); 788 extern void cpu_vm_data_init(struct cpu *); 789 extern void cpu_vm_data_destroy(struct cpu *); 790 791 #endif /* _KERNEL || _FAKE_KERNEL */ 792 793 #ifdef __cplusplus 794 } 795 #endif 796 797 #endif /* _SYS_CPUVAR_H */ 798