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 */ 27 28 #ifndef _SYS_CPUVAR_H 29 #define _SYS_CPUVAR_H 30 31 #include <sys/thread.h> 32 #include <sys/sysinfo.h> /* has cpu_stat_t definition */ 33 #include <sys/disp.h> 34 #include <sys/processor.h> 35 36 #include <sys/loadavg.h> 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 59 /* 60 * For fast event tracing. 61 */ 62 struct ftrace_record; 63 typedef struct ftrace_data { 64 int ftd_state; /* ftrace flags */ 65 kmutex_t ftd_unused; /* ftrace buffer lock, unused */ 66 struct ftrace_record *ftd_cur; /* current record */ 67 struct ftrace_record *ftd_first; /* first record */ 68 struct ftrace_record *ftd_last; /* last record */ 69 } ftrace_data_t; 70 71 struct cyc_cpu; 72 struct nvlist; 73 74 /* 75 * Per-CPU data. 76 * 77 * Be careful adding new members: if they are not the same in all modules (e.g. 78 * change size depending on a #define), CTF uniquification can fail to work 79 * properly. Furthermore, this is transitive in that it applies recursively to 80 * all types pointed to by cpu_t. 81 */ 82 typedef struct cpu { 83 processorid_t cpu_id; /* CPU number */ 84 processorid_t cpu_seqid; /* sequential CPU id (0..ncpus-1) */ 85 volatile cpu_flag_t cpu_flags; /* flags indicating CPU state */ 86 struct cpu *cpu_self; /* pointer to itself */ 87 kthread_t *cpu_thread; /* current thread */ 88 kthread_t *cpu_idle_thread; /* idle thread for this CPU */ 89 kthread_t *cpu_pause_thread; /* pause thread for this CPU */ 90 klwp_id_t cpu_lwp; /* current lwp (if any) */ 91 klwp_id_t cpu_fpowner; /* currently loaded fpu owner */ 92 struct cpupart *cpu_part; /* partition with this CPU */ 93 struct lgrp_ld *cpu_lpl; /* pointer to this cpu's load */ 94 int cpu_cache_offset; /* see kmem.c for details */ 95 96 /* 97 * Links to other CPUs. It is safe to walk these lists if 98 * one of the following is true: 99 * - cpu_lock held 100 * - preemption disabled via kpreempt_disable 101 * - PIL >= DISP_LEVEL 102 * - acting thread is an interrupt thread 103 * - all other CPUs are paused 104 */ 105 struct cpu *cpu_next; /* next existing CPU */ 106 struct cpu *cpu_prev; /* prev existing CPU */ 107 struct cpu *cpu_next_onln; /* next online (enabled) CPU */ 108 struct cpu *cpu_prev_onln; /* prev online (enabled) CPU */ 109 struct cpu *cpu_next_part; /* next CPU in partition */ 110 struct cpu *cpu_prev_part; /* prev CPU in partition */ 111 struct cpu *cpu_next_lgrp; /* next CPU in latency group */ 112 struct cpu *cpu_prev_lgrp; /* prev CPU in latency group */ 113 struct cpu *cpu_next_lpl; /* next CPU in lgrp partition */ 114 struct cpu *cpu_prev_lpl; 115 116 struct cpu_pg *cpu_pg; /* cpu's processor groups */ 117 118 void *cpu_reserved[4]; /* reserved for future use */ 119 120 /* 121 * Scheduling variables. 122 */ 123 disp_t *cpu_disp; /* dispatch queue data */ 124 /* 125 * Note that cpu_disp is set before the CPU is added to the system 126 * and is never modified. Hence, no additional locking is needed 127 * beyond what's necessary to access the cpu_t structure. 128 */ 129 char cpu_runrun; /* scheduling flag - set to preempt */ 130 char cpu_kprunrun; /* force kernel preemption */ 131 pri_t cpu_chosen_level; /* priority at which cpu */ 132 /* was chosen for scheduling */ 133 kthread_t *cpu_dispthread; /* thread selected for dispatch */ 134 disp_lock_t cpu_thread_lock; /* dispatcher lock on current thread */ 135 uint8_t cpu_disp_flags; /* flags used by dispatcher */ 136 /* 137 * The following field is updated when ever the cpu_dispthread 138 * changes. Also in places, where the current thread(cpu_dispthread) 139 * priority changes. This is used in disp_lowpri_cpu() 140 */ 141 pri_t cpu_dispatch_pri; /* priority of cpu_dispthread */ 142 clock_t cpu_last_swtch; /* last time switched to new thread */ 143 144 /* 145 * Interrupt data. 146 */ 147 caddr_t cpu_intr_stack; /* interrupt stack */ 148 kthread_t *cpu_intr_thread; /* interrupt thread list */ 149 uint_t cpu_intr_actv; /* interrupt levels active (bitmask) */ 150 int cpu_base_spl; /* priority for highest rupt active */ 151 152 /* 153 * Statistics. 154 */ 155 cpu_stats_t cpu_stats; /* per-CPU statistics */ 156 struct kstat *cpu_info_kstat; /* kstat for cpu info */ 157 158 uintptr_t cpu_profile_pc; /* kernel PC in profile interrupt */ 159 uintptr_t cpu_profile_upc; /* user PC in profile interrupt */ 160 uintptr_t cpu_profile_pil; /* PIL when profile interrupted */ 161 162 ftrace_data_t cpu_ftrace; /* per cpu ftrace data */ 163 164 clock_t cpu_deadman_counter; /* used by deadman() */ 165 uint_t cpu_deadman_countdown; /* used by deadman() */ 166 167 kmutex_t cpu_cpc_ctxlock; /* protects context for idle thread */ 168 kcpc_ctx_t *cpu_cpc_ctx; /* performance counter context */ 169 170 /* 171 * Configuration information for the processor_info system call. 172 */ 173 processor_info_t cpu_type_info; /* config info */ 174 time_t cpu_state_begin; /* when CPU entered current state */ 175 char cpu_cpr_flags; /* CPR related info */ 176 struct cyc_cpu *cpu_cyclic; /* per cpu cyclic subsystem data */ 177 struct squeue_set_s *cpu_squeue_set; /* per cpu squeue set */ 178 struct nvlist *cpu_props; /* pool-related properties */ 179 180 krwlock_t cpu_ft_lock; /* DTrace: fasttrap lock */ 181 uintptr_t cpu_dtrace_caller; /* DTrace: caller, if any */ 182 hrtime_t cpu_dtrace_chillmark; /* DTrace: chill mark time */ 183 hrtime_t cpu_dtrace_chilled; /* DTrace: total chill time */ 184 uint64_t cpu_dtrace_probes; /* DTrace: total probes fired */ 185 hrtime_t cpu_dtrace_nsec; /* DTrace: ns in dtrace_probe */ 186 187 volatile uint16_t cpu_mstate; /* cpu microstate */ 188 volatile uint16_t cpu_mstate_gen; /* generation counter */ 189 volatile hrtime_t cpu_mstate_start; /* cpu microstate start time */ 190 volatile hrtime_t cpu_acct[NCMSTATES]; /* cpu microstate data */ 191 hrtime_t cpu_intracct[NCMSTATES]; /* interrupt mstate 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 void *cpu_vm_data; 204 205 struct cpu_physid *cpu_physid; /* physical associations */ 206 207 uint64_t cpu_curr_clock; /* current clock freq in Hz */ 208 char *cpu_supp_freqs; /* supported freqs in Hz */ 209 210 uintptr_t cpu_cpcprofile_pc; /* kernel PC in cpc interrupt */ 211 uintptr_t cpu_cpcprofile_upc; /* user PC in cpc interrupt */ 212 213 /* 214 * Interrupt load factor used by dispatcher & softcall 215 */ 216 hrtime_t cpu_intrlast; /* total interrupt time (nsec) */ 217 int cpu_intrload; /* interrupt load factor (0-99%) */ 218 219 uint_t cpu_rotor; /* for cheap pseudo-random numbers */ 220 221 struct cu_cpu_info *cpu_cu_info; /* capacity & util. info */ 222 223 /* 224 * cpu_generation is updated whenever CPU goes on-line or off-line. 225 * Updates to cpu_generation are protected by cpu_lock. 226 * 227 * See CPU_NEW_GENERATION() macro below. 228 */ 229 volatile uint_t cpu_generation; /* tracking on/off-line */ 230 231 /* 232 * New members must be added /before/ this member, as the CTF tools 233 * rely on this being the last field before cpu_m, so they can 234 * correctly calculate the offset when synthetically adding the cpu_m 235 * member in objects that do not have it. This fixup is required for 236 * uniquification to work correctly. 237 */ 238 uintptr_t cpu_m_pad; 239 240 #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP) 241 struct machcpu cpu_m; /* per architecture info */ 242 #endif 243 } cpu_t; 244 245 /* 246 * The cpu_core structure consists of per-CPU state available in any context. 247 * On some architectures, this may mean that the page(s) containing the 248 * NCPU-sized array of cpu_core structures must be locked in the TLB -- it 249 * is up to the platform to assure that this is performed properly. Note that 250 * the structure is sized to avoid false sharing. 251 */ 252 #define CPUC_SIZE (sizeof (uint16_t) + sizeof (uint8_t) + \ 253 sizeof (uintptr_t) + sizeof (kmutex_t)) 254 #define CPUC_PADSIZE CPU_CACHE_COHERENCE_SIZE - CPUC_SIZE 255 256 typedef struct cpu_core { 257 uint16_t cpuc_dtrace_flags; /* DTrace flags */ 258 uint8_t cpuc_dcpc_intr_state; /* DCPC provider intr state */ 259 uint8_t cpuc_pad[CPUC_PADSIZE]; /* padding */ 260 uintptr_t cpuc_dtrace_illval; /* DTrace illegal value */ 261 kmutex_t cpuc_pid_lock; /* DTrace pid provider lock */ 262 } cpu_core_t; 263 264 #ifdef _KERNEL 265 extern cpu_core_t cpu_core[]; 266 #endif /* _KERNEL */ 267 268 /* 269 * CPU_ON_INTR() macro. Returns non-zero if currently on interrupt stack. 270 * Note that this isn't a test for a high PIL. For example, cpu_intr_actv 271 * does not get updated when we go through sys_trap from TL>0 at high PIL. 272 * getpil() should be used instead to check for PIL levels. 273 */ 274 #define CPU_ON_INTR(cpup) ((cpup)->cpu_intr_actv >> (LOCK_LEVEL + 1)) 275 276 /* 277 * Check to see if an interrupt thread might be active at a given ipl. 278 * If so return true. 279 * We must be conservative--it is ok to give a false yes, but a false no 280 * will cause disaster. (But if the situation changes after we check it is 281 * ok--the caller is trying to ensure that an interrupt routine has been 282 * exited). 283 * This is used when trying to remove an interrupt handler from an autovector 284 * list in avintr.c. 285 */ 286 #define INTR_ACTIVE(cpup, level) \ 287 ((level) <= LOCK_LEVEL ? \ 288 ((cpup)->cpu_intr_actv & (1 << (level))) : (CPU_ON_INTR(cpup))) 289 290 /* 291 * CPU_PSEUDO_RANDOM() returns a per CPU value that changes each time one 292 * looks at it. It's meant as a cheap mechanism to be incorporated in routines 293 * wanting to avoid biasing, but where true randomness isn't needed (just 294 * something that changes). 295 */ 296 #define CPU_PSEUDO_RANDOM() (CPU->cpu_rotor++) 297 298 #if defined(_KERNEL) || defined(_KMEMUSER) 299 300 #define INTR_STACK_SIZE MAX(DEFAULTSTKSZ, PAGESIZE) 301 302 /* MEMBERS PROTECTED BY "atomicity": cpu_flags */ 303 304 /* 305 * Flags in the CPU structure. 306 * 307 * These are protected by cpu_lock (except during creation). 308 * 309 * Offlined-CPUs have three stages of being offline: 310 * 311 * CPU_ENABLE indicates that the CPU is participating in I/O interrupts 312 * that can be directed at a number of different CPUs. If CPU_ENABLE 313 * is off, the CPU will not be given interrupts that can be sent elsewhere, 314 * but will still get interrupts from devices associated with that CPU only, 315 * and from other CPUs. 316 * 317 * CPU_OFFLINE indicates that the dispatcher should not allow any threads 318 * other than interrupt threads to run on that CPU. A CPU will not have 319 * CPU_OFFLINE set if there are any bound threads (besides interrupts). 320 * 321 * CPU_QUIESCED is set if p_offline was able to completely turn idle the 322 * CPU and it will not have to run interrupt threads. In this case it'll 323 * stay in the idle loop until CPU_QUIESCED is turned off. 324 * 325 * CPU_FROZEN is used only by CPR to mark CPUs that have been successfully 326 * suspended (in the suspend path), or have yet to be resumed (in the resume 327 * case). 328 * 329 * On some platforms CPUs can be individually powered off. 330 * The following flags are set for powered off CPUs: CPU_QUIESCED, 331 * CPU_OFFLINE, and CPU_POWEROFF. The following flags are cleared: 332 * CPU_RUNNING, CPU_READY, CPU_EXISTS, and CPU_ENABLE. 333 */ 334 #define CPU_RUNNING 0x001 /* CPU running */ 335 #define CPU_READY 0x002 /* CPU ready for cross-calls */ 336 #define CPU_QUIESCED 0x004 /* CPU will stay in idle */ 337 #define CPU_EXISTS 0x008 /* CPU is configured */ 338 #define CPU_ENABLE 0x010 /* CPU enabled for interrupts */ 339 #define CPU_OFFLINE 0x020 /* CPU offline via p_online */ 340 #define CPU_POWEROFF 0x040 /* CPU is powered off */ 341 #define CPU_FROZEN 0x080 /* CPU is frozen via CPR suspend */ 342 #define CPU_SPARE 0x100 /* CPU offline available for use */ 343 #define CPU_FAULTED 0x200 /* CPU offline diagnosed faulty */ 344 345 #define FMT_CPU_FLAGS \ 346 "\20\12fault\11spare\10frozen" \ 347 "\7poweroff\6offline\5enable\4exist\3quiesced\2ready\1run" 348 349 #define CPU_ACTIVE(cpu) (((cpu)->cpu_flags & CPU_OFFLINE) == 0) 350 351 /* 352 * Flags for cpu_offline(), cpu_faulted(), and cpu_spare(). 353 */ 354 #define CPU_FORCED 0x0001 /* Force CPU offline */ 355 356 /* 357 * DTrace flags. 358 */ 359 #define CPU_DTRACE_NOFAULT 0x0001 /* Don't fault */ 360 #define CPU_DTRACE_DROP 0x0002 /* Drop this ECB */ 361 #define CPU_DTRACE_BADADDR 0x0004 /* DTrace fault: bad address */ 362 #define CPU_DTRACE_BADALIGN 0x0008 /* DTrace fault: bad alignment */ 363 #define CPU_DTRACE_DIVZERO 0x0010 /* DTrace fault: divide by zero */ 364 #define CPU_DTRACE_ILLOP 0x0020 /* DTrace fault: illegal operation */ 365 #define CPU_DTRACE_NOSCRATCH 0x0040 /* DTrace fault: out of scratch */ 366 #define CPU_DTRACE_KPRIV 0x0080 /* DTrace fault: bad kernel access */ 367 #define CPU_DTRACE_UPRIV 0x0100 /* DTrace fault: bad user access */ 368 #define CPU_DTRACE_TUPOFLOW 0x0200 /* DTrace fault: tuple stack overflow */ 369 #if defined(__sparc) 370 #define CPU_DTRACE_FAKERESTORE 0x0400 /* pid provider hint to getreg */ 371 #endif 372 #define CPU_DTRACE_ENTRY 0x0800 /* pid provider hint to ustack() */ 373 #define CPU_DTRACE_BADSTACK 0x1000 /* DTrace fault: bad stack */ 374 375 #define CPU_DTRACE_FAULT (CPU_DTRACE_BADADDR | CPU_DTRACE_BADALIGN | \ 376 CPU_DTRACE_DIVZERO | CPU_DTRACE_ILLOP | \ 377 CPU_DTRACE_NOSCRATCH | CPU_DTRACE_KPRIV | \ 378 CPU_DTRACE_UPRIV | CPU_DTRACE_TUPOFLOW | \ 379 CPU_DTRACE_BADSTACK) 380 #define CPU_DTRACE_ERROR (CPU_DTRACE_FAULT | CPU_DTRACE_DROP) 381 382 /* 383 * Dispatcher flags 384 * These flags must be changed only by the current CPU. 385 */ 386 #define CPU_DISP_DONTSTEAL 0x01 /* CPU undergoing context swtch */ 387 #define CPU_DISP_HALTED 0x02 /* CPU halted waiting for interrupt */ 388 389 #endif /* _KERNEL || _KMEMUSER */ 390 391 #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP) 392 393 /* 394 * Macros for manipulating sets of CPUs as a bitmap. Note that this 395 * bitmap may vary in size depending on the maximum CPU id a specific 396 * platform supports. This may be different than the number of CPUs 397 * the platform supports, since CPU ids can be sparse. We define two 398 * sets of macros; one for platforms where the maximum CPU id is less 399 * than the number of bits in a single word (32 in a 32-bit kernel, 400 * 64 in a 64-bit kernel), and one for platforms that require bitmaps 401 * of more than one word. 402 */ 403 404 #define CPUSET_WORDS BT_BITOUL(NCPU) 405 #define CPUSET_NOTINSET ((uint_t)-1) 406 407 #if CPUSET_WORDS > 1 408 409 typedef struct cpuset { 410 ulong_t cpub[CPUSET_WORDS]; 411 } cpuset_t; 412 413 /* 414 * Private functions for manipulating cpusets that do not fit in a 415 * single word. These should not be used directly; instead the 416 * CPUSET_* macros should be used so the code will be portable 417 * across different definitions of NCPU. 418 */ 419 extern void cpuset_all(cpuset_t *); 420 extern void cpuset_all_but(cpuset_t *, uint_t); 421 extern int cpuset_isnull(cpuset_t *); 422 extern int cpuset_cmp(cpuset_t *, cpuset_t *); 423 extern void cpuset_only(cpuset_t *, uint_t); 424 extern uint_t cpuset_find(cpuset_t *); 425 extern void cpuset_bounds(cpuset_t *, uint_t *, uint_t *); 426 427 #define CPUSET_ALL(set) cpuset_all(&(set)) 428 #define CPUSET_ALL_BUT(set, cpu) cpuset_all_but(&(set), cpu) 429 #define CPUSET_ONLY(set, cpu) cpuset_only(&(set), cpu) 430 #define CPU_IN_SET(set, cpu) BT_TEST((set).cpub, cpu) 431 #define CPUSET_ADD(set, cpu) BT_SET((set).cpub, cpu) 432 #define CPUSET_DEL(set, cpu) BT_CLEAR((set).cpub, cpu) 433 #define CPUSET_ISNULL(set) cpuset_isnull(&(set)) 434 #define CPUSET_ISEQUAL(set1, set2) cpuset_cmp(&(set1), &(set2)) 435 436 /* 437 * Find one CPU in the cpuset. 438 * Sets "cpu" to the id of the found CPU, or CPUSET_NOTINSET if no cpu 439 * could be found. (i.e. empty set) 440 */ 441 #define CPUSET_FIND(set, cpu) { \ 442 cpu = cpuset_find(&(set)); \ 443 } 444 445 /* 446 * Determine the smallest and largest CPU id in the set. Returns 447 * CPUSET_NOTINSET in smallest and largest when set is empty. 448 */ 449 #define CPUSET_BOUNDS(set, smallest, largest) { \ 450 cpuset_bounds(&(set), &(smallest), &(largest)); \ 451 } 452 453 /* 454 * Atomic cpuset operations 455 * These are safe to use for concurrent cpuset manipulations. 456 * "xdel" and "xadd" are exclusive operations, that set "result" to "0" 457 * if the add or del was successful, or "-1" if not successful. 458 * (e.g. attempting to add a cpu to a cpuset that's already there, or 459 * deleting a cpu that's not in the cpuset) 460 */ 461 462 #define CPUSET_ATOMIC_DEL(set, cpu) BT_ATOMIC_CLEAR((set).cpub, (cpu)) 463 #define CPUSET_ATOMIC_ADD(set, cpu) BT_ATOMIC_SET((set).cpub, (cpu)) 464 465 #define CPUSET_ATOMIC_XADD(set, cpu, result) \ 466 BT_ATOMIC_SET_EXCL((set).cpub, cpu, result) 467 468 #define CPUSET_ATOMIC_XDEL(set, cpu, result) \ 469 BT_ATOMIC_CLEAR_EXCL((set).cpub, cpu, result) 470 471 472 #define CPUSET_OR(set1, set2) { \ 473 int _i; \ 474 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 475 (set1).cpub[_i] |= (set2).cpub[_i]; \ 476 } 477 478 #define CPUSET_XOR(set1, set2) { \ 479 int _i; \ 480 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 481 (set1).cpub[_i] ^= (set2).cpub[_i]; \ 482 } 483 484 #define CPUSET_AND(set1, set2) { \ 485 int _i; \ 486 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 487 (set1).cpub[_i] &= (set2).cpub[_i]; \ 488 } 489 490 #define CPUSET_ZERO(set) { \ 491 int _i; \ 492 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 493 (set).cpub[_i] = 0; \ 494 } 495 496 #elif CPUSET_WORDS == 1 497 498 typedef ulong_t cpuset_t; /* a set of CPUs */ 499 500 #define CPUSET(cpu) (1UL << (cpu)) 501 502 #define CPUSET_ALL(set) ((void)((set) = ~0UL)) 503 #define CPUSET_ALL_BUT(set, cpu) ((void)((set) = ~CPUSET(cpu))) 504 #define CPUSET_ONLY(set, cpu) ((void)((set) = CPUSET(cpu))) 505 #define CPU_IN_SET(set, cpu) ((set) & CPUSET(cpu)) 506 #define CPUSET_ADD(set, cpu) ((void)((set) |= CPUSET(cpu))) 507 #define CPUSET_DEL(set, cpu) ((void)((set) &= ~CPUSET(cpu))) 508 #define CPUSET_ISNULL(set) ((set) == 0) 509 #define CPUSET_ISEQUAL(set1, set2) ((set1) == (set2)) 510 #define CPUSET_OR(set1, set2) ((void)((set1) |= (set2))) 511 #define CPUSET_XOR(set1, set2) ((void)((set1) ^= (set2))) 512 #define CPUSET_AND(set1, set2) ((void)((set1) &= (set2))) 513 #define CPUSET_ZERO(set) ((void)((set) = 0)) 514 515 #define CPUSET_FIND(set, cpu) { \ 516 cpu = (uint_t)(lowbit(set) - 1); \ 517 } 518 519 #define CPUSET_BOUNDS(set, smallest, largest) { \ 520 smallest = (uint_t)(lowbit(set) - 1); \ 521 largest = (uint_t)(highbit(set) - 1); \ 522 } 523 524 #define CPUSET_ATOMIC_DEL(set, cpu) atomic_and_ulong(&(set), ~CPUSET(cpu)) 525 #define CPUSET_ATOMIC_ADD(set, cpu) atomic_or_ulong(&(set), CPUSET(cpu)) 526 527 #define CPUSET_ATOMIC_XADD(set, cpu, result) \ 528 { result = atomic_set_long_excl(&(set), (cpu)); } 529 530 #define CPUSET_ATOMIC_XDEL(set, cpu, result) \ 531 { result = atomic_clear_long_excl(&(set), (cpu)); } 532 533 #else /* CPUSET_WORDS <= 0 */ 534 535 #error NCPU is undefined or invalid 536 537 #endif /* CPUSET_WORDS */ 538 539 extern cpuset_t cpu_seqid_inuse; 540 541 #endif /* (_KERNEL || _KMEMUSER) && _MACHDEP */ 542 543 #define CPU_CPR_OFFLINE 0x0 544 #define CPU_CPR_ONLINE 0x1 545 #define CPU_CPR_IS_OFFLINE(cpu) (((cpu)->cpu_cpr_flags & CPU_CPR_ONLINE) == 0) 546 #define CPU_CPR_IS_ONLINE(cpu) ((cpu)->cpu_cpr_flags & CPU_CPR_ONLINE) 547 #define CPU_SET_CPR_FLAGS(cpu, flag) ((cpu)->cpu_cpr_flags |= flag) 548 549 #if defined(_KERNEL) || defined(_KMEMUSER) 550 551 extern struct cpu *cpu[]; /* indexed by CPU number */ 552 extern struct cpu **cpu_seq; /* indexed by sequential CPU id */ 553 extern cpu_t *cpu_list; /* list of CPUs */ 554 extern cpu_t *cpu_active; /* list of active CPUs */ 555 extern int ncpus; /* number of CPUs present */ 556 extern int ncpus_online; /* number of CPUs not quiesced */ 557 extern int max_ncpus; /* max present before ncpus is known */ 558 extern int boot_max_ncpus; /* like max_ncpus but for real */ 559 extern int boot_ncpus; /* # cpus present @ boot */ 560 extern processorid_t max_cpuid; /* maximum CPU number */ 561 extern struct cpu *cpu_inmotion; /* offline or partition move target */ 562 extern cpu_t *clock_cpu_list; 563 extern processorid_t max_cpu_seqid_ever; /* maximum seqid ever given */ 564 565 #if defined(__i386) || defined(__amd64) 566 extern struct cpu *curcpup(void); 567 #define CPU (curcpup()) /* Pointer to current CPU */ 568 #else 569 #define CPU (curthread->t_cpu) /* Pointer to current CPU */ 570 #endif 571 572 /* 573 * CPU_CURRENT indicates to thread_affinity_set to use CPU->cpu_id 574 * as the target and to grab cpu_lock instead of requiring the caller 575 * to grab it. 576 */ 577 #define CPU_CURRENT -3 578 579 /* 580 * Per-CPU statistics 581 * 582 * cpu_stats_t contains numerous system and VM-related statistics, in the form 583 * of gauges or monotonically-increasing event occurrence counts. 584 */ 585 586 #define CPU_STATS_ENTER_K() kpreempt_disable() 587 #define CPU_STATS_EXIT_K() kpreempt_enable() 588 589 #define CPU_STATS_ADD_K(class, stat, amount) \ 590 { kpreempt_disable(); /* keep from switching CPUs */\ 591 CPU_STATS_ADDQ(CPU, class, stat, amount); \ 592 kpreempt_enable(); \ 593 } 594 595 #define CPU_STATS_ADDQ(cp, class, stat, amount) { \ 596 extern void __dtrace_probe___cpu_##class##info_##stat(uint_t, \ 597 uint64_t *, cpu_t *); \ 598 uint64_t *stataddr = &((cp)->cpu_stats.class.stat); \ 599 __dtrace_probe___cpu_##class##info_##stat((amount), \ 600 stataddr, cp); \ 601 *(stataddr) += (amount); \ 602 } 603 604 #define CPU_STATS(cp, stat) \ 605 ((cp)->cpu_stats.stat) 606 607 /* 608 * Increment CPU generation value. 609 * This macro should be called whenever CPU goes on-line or off-line. 610 * Updates to cpu_generation should be protected by cpu_lock. 611 */ 612 #define CPU_NEW_GENERATION(cp) ((cp)->cpu_generation++) 613 614 #endif /* _KERNEL || _KMEMUSER */ 615 616 /* 617 * CPU support routines. 618 */ 619 #if defined(_KERNEL) && defined(__STDC__) /* not for genassym.c */ 620 621 struct zone; 622 623 void cpu_list_init(cpu_t *); 624 void cpu_add_unit(cpu_t *); 625 void cpu_del_unit(int cpuid); 626 void cpu_add_active(cpu_t *); 627 void cpu_kstat_init(cpu_t *); 628 void cpu_visibility_add(cpu_t *, struct zone *); 629 void cpu_visibility_remove(cpu_t *, struct zone *); 630 void cpu_visibility_configure(cpu_t *, struct zone *); 631 void cpu_visibility_unconfigure(cpu_t *, struct zone *); 632 void cpu_visibility_online(cpu_t *, struct zone *); 633 void cpu_visibility_offline(cpu_t *, struct zone *); 634 void cpu_create_intrstat(cpu_t *); 635 void cpu_delete_intrstat(cpu_t *); 636 int cpu_kstat_intrstat_update(kstat_t *, int); 637 void cpu_intr_swtch_enter(kthread_t *); 638 void cpu_intr_swtch_exit(kthread_t *); 639 640 void mbox_lock_init(void); /* initialize cross-call locks */ 641 void mbox_init(int cpun); /* initialize cross-calls */ 642 void poke_cpu(int cpun); /* interrupt another CPU (to preempt) */ 643 644 /* 645 * values for safe_list. Pause state that CPUs are in. 646 */ 647 #define PAUSE_IDLE 0 /* normal state */ 648 #define PAUSE_READY 1 /* paused thread ready to spl */ 649 #define PAUSE_WAIT 2 /* paused thread is spl-ed high */ 650 #define PAUSE_DIE 3 /* tell pause thread to leave */ 651 #define PAUSE_DEAD 4 /* pause thread has left */ 652 653 void mach_cpu_pause(volatile char *); 654 655 void pause_cpus(cpu_t *off_cp); 656 void start_cpus(void); 657 int cpus_paused(void); 658 659 void cpu_pause_init(void); 660 cpu_t *cpu_get(processorid_t cpun); /* get the CPU struct associated */ 661 662 int cpu_online(cpu_t *cp); /* take cpu online */ 663 int cpu_offline(cpu_t *cp, int flags); /* take cpu offline */ 664 int cpu_spare(cpu_t *cp, int flags); /* take cpu to spare */ 665 int cpu_faulted(cpu_t *cp, int flags); /* take cpu to faulted */ 666 int cpu_poweron(cpu_t *cp); /* take powered-off cpu to offline */ 667 int cpu_poweroff(cpu_t *cp); /* take offline cpu to powered-off */ 668 669 cpu_t *cpu_intr_next(cpu_t *cp); /* get next online CPU taking intrs */ 670 int cpu_intr_count(cpu_t *cp); /* count # of CPUs handling intrs */ 671 int cpu_intr_on(cpu_t *cp); /* CPU taking I/O interrupts? */ 672 void cpu_intr_enable(cpu_t *cp); /* enable I/O interrupts */ 673 int cpu_intr_disable(cpu_t *cp); /* disable I/O interrupts */ 674 void cpu_intr_alloc(cpu_t *cp, int n); /* allocate interrupt threads */ 675 676 /* 677 * Routines for checking CPU states. 678 */ 679 int cpu_is_online(cpu_t *); /* check if CPU is online */ 680 int cpu_is_nointr(cpu_t *); /* check if CPU can service intrs */ 681 int cpu_is_active(cpu_t *); /* check if CPU can run threads */ 682 int cpu_is_offline(cpu_t *); /* check if CPU is offline */ 683 int cpu_is_poweredoff(cpu_t *); /* check if CPU is powered off */ 684 685 int cpu_flagged_online(cpu_flag_t); /* flags show CPU is online */ 686 int cpu_flagged_nointr(cpu_flag_t); /* flags show CPU not handling intrs */ 687 int cpu_flagged_active(cpu_flag_t); /* flags show CPU scheduling threads */ 688 int cpu_flagged_offline(cpu_flag_t); /* flags show CPU is offline */ 689 int cpu_flagged_poweredoff(cpu_flag_t); /* flags show CPU is powered off */ 690 691 /* 692 * The processor_info(2) state of a CPU is a simplified representation suitable 693 * for use by an application program. Kernel subsystems should utilize the 694 * internal per-CPU state as given by the cpu_flags member of the cpu structure, 695 * as this information may include platform- or architecture-specific state 696 * critical to a subsystem's disposition of a particular CPU. 697 */ 698 void cpu_set_state(cpu_t *); /* record/timestamp current state */ 699 int cpu_get_state(cpu_t *); /* get current cpu state */ 700 const char *cpu_get_state_str(cpu_t *); /* get current cpu state as string */ 701 702 703 void cpu_set_curr_clock(uint64_t); /* indicate the current CPU's freq */ 704 void cpu_set_supp_freqs(cpu_t *, const char *); /* set the CPU supported */ 705 /* frequencies */ 706 707 int cpu_configure(int); 708 int cpu_unconfigure(int); 709 void cpu_destroy_bound_threads(cpu_t *cp); 710 711 extern int cpu_bind_thread(kthread_t *tp, processorid_t bind, 712 processorid_t *obind, int *error); 713 extern int cpu_unbind(processorid_t cpu_id, boolean_t force); 714 extern void thread_affinity_set(kthread_t *t, int cpu_id); 715 extern void thread_affinity_clear(kthread_t *t); 716 extern void affinity_set(int cpu_id); 717 extern void affinity_clear(void); 718 extern void init_cpu_mstate(struct cpu *, int); 719 extern void term_cpu_mstate(struct cpu *); 720 extern void new_cpu_mstate(int, hrtime_t); 721 extern void get_cpu_mstate(struct cpu *, hrtime_t *); 722 extern void thread_nomigrate(void); 723 extern void thread_allowmigrate(void); 724 extern void weakbinding_stop(void); 725 extern void weakbinding_start(void); 726 727 /* 728 * The following routines affect the CPUs participation in interrupt processing, 729 * if that is applicable on the architecture. This only affects interrupts 730 * which aren't directed at the processor (not cross calls). 731 * 732 * cpu_disable_intr returns non-zero if interrupts were previously enabled. 733 */ 734 int cpu_disable_intr(struct cpu *cp); /* stop issuing interrupts to cpu */ 735 void cpu_enable_intr(struct cpu *cp); /* start issuing interrupts to cpu */ 736 737 /* 738 * The mutex cpu_lock protects cpu_flags for all CPUs, as well as the ncpus 739 * and ncpus_online counts. 740 */ 741 extern kmutex_t cpu_lock; /* lock protecting CPU data */ 742 743 /* 744 * CPU state change events 745 * 746 * Various subsystems need to know when CPUs change their state. They get this 747 * information by registering CPU state change callbacks using 748 * register_cpu_setup_func(). Whenever any CPU changes its state, the callback 749 * function is called. The callback function is passed three arguments: 750 * 751 * Event, described by cpu_setup_t 752 * CPU ID 753 * Transparent pointer passed when registering the callback 754 * 755 * The callback function is called with cpu_lock held. The return value from the 756 * callback function is usually ignored, except for CPU_CONFIG and CPU_UNCONFIG 757 * events. For these two events, non-zero return value indicates a failure and 758 * prevents successful completion of the operation. 759 * 760 * New events may be added in the future. Callback functions should ignore any 761 * events that they do not understand. 762 * 763 * The following events provide notification callbacks: 764 * 765 * CPU_INIT A new CPU is started and added to the list of active CPUs 766 * This event is only used during boot 767 * 768 * CPU_CONFIG A newly inserted CPU is prepared for starting running code 769 * This event is called by DR code 770 * 771 * CPU_UNCONFIG CPU has been powered off and needs cleanup 772 * This event is called by DR code 773 * 774 * CPU_ON CPU is enabled but does not run anything yet 775 * 776 * CPU_INTR_ON CPU is enabled and has interrupts enabled 777 * 778 * CPU_OFF CPU is going offline but can still run threads 779 * 780 * CPU_CPUPART_OUT CPU is going to move out of its partition 781 * 782 * CPU_CPUPART_IN CPU is going to move to a new partition 783 * 784 * CPU_SETUP CPU is set up during boot and can run threads 785 */ 786 typedef enum { 787 CPU_INIT, 788 CPU_CONFIG, 789 CPU_UNCONFIG, 790 CPU_ON, 791 CPU_OFF, 792 CPU_CPUPART_IN, 793 CPU_CPUPART_OUT, 794 CPU_SETUP, 795 CPU_INTR_ON 796 } cpu_setup_t; 797 798 typedef int cpu_setup_func_t(cpu_setup_t, int, void *); 799 800 /* 801 * Routines used to register interest in cpu's being added to or removed 802 * from the system. 803 */ 804 extern void register_cpu_setup_func(cpu_setup_func_t *, void *); 805 extern void unregister_cpu_setup_func(cpu_setup_func_t *, void *); 806 extern void cpu_state_change_notify(int, cpu_setup_t); 807 808 /* 809 * Call specified function on the given CPU 810 */ 811 typedef void (*cpu_call_func_t)(uintptr_t, uintptr_t); 812 extern void cpu_call(cpu_t *, cpu_call_func_t, uintptr_t, uintptr_t); 813 814 815 /* 816 * Create various strings that describe the given CPU for the 817 * processor_info system call and configuration-related kstats. 818 */ 819 #define CPU_IDSTRLEN 100 820 821 extern void init_cpu_info(struct cpu *); 822 extern void populate_idstr(struct cpu *); 823 extern void cpu_vm_data_init(struct cpu *); 824 extern void cpu_vm_data_destroy(struct cpu *); 825 826 #endif /* _KERNEL */ 827 828 #ifdef __cplusplus 829 } 830 #endif 831 832 #endif /* _SYS_CPUVAR_H */ 833