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 */ 28 29 #ifndef _SYS_CPUVAR_H 30 #define _SYS_CPUVAR_H 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 #include <sys/kcpc.h> /* has kcpc_ctx_t definition */ 37 38 #include <sys/loadavg.h> 39 #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP) 40 #include <sys/machcpuvar.h> 41 #endif 42 43 #include <sys/types.h> 44 #include <sys/file.h> 45 #include <sys/bitmap.h> 46 #include <sys/rwlock.h> 47 #include <sys/msacct.h> 48 #if defined(__GNUC__) && defined(_ASM_INLINES) && defined(_KERNEL) && \ 49 (defined(__i386) || defined(__amd64)) 50 #include <asm/cpuvar.h> 51 #endif 52 53 #ifdef __cplusplus 54 extern "C" { 55 #endif 56 57 struct squeue_set_s; 58 59 #define CPU_CACHE_COHERENCE_SIZE 64 60 61 /* 62 * For fast event tracing. 63 */ 64 struct ftrace_record; 65 typedef struct ftrace_data { 66 int ftd_state; /* ftrace flags */ 67 kmutex_t ftd_unused; /* ftrace buffer lock, unused */ 68 struct ftrace_record *ftd_cur; /* current record */ 69 struct ftrace_record *ftd_first; /* first record */ 70 struct ftrace_record *ftd_last; /* last record */ 71 } ftrace_data_t; 72 73 struct cyc_cpu; 74 struct nvlist; 75 76 /* 77 * Per-CPU data. 78 * 79 * Be careful adding new members: if they are not the same in all modules (e.g. 80 * change size depending on a #define), CTF uniquification can fail to work 81 * properly. Furthermore, this is transitive in that it applies recursively to 82 * all types pointed to by cpu_t. 83 */ 84 typedef struct cpu { 85 processorid_t cpu_id; /* CPU number */ 86 processorid_t cpu_seqid; /* sequential CPU id (0..ncpus-1) */ 87 volatile cpu_flag_t cpu_flags; /* flags indicating CPU state */ 88 struct cpu *cpu_self; /* pointer to itself */ 89 kthread_t *cpu_thread; /* current thread */ 90 kthread_t *cpu_idle_thread; /* idle thread for this CPU */ 91 kthread_t *cpu_pause_thread; /* pause thread for this CPU */ 92 klwp_id_t cpu_lwp; /* current lwp (if any) */ 93 klwp_id_t cpu_fpowner; /* currently loaded fpu owner */ 94 struct cpupart *cpu_part; /* partition with this CPU */ 95 struct lgrp_ld *cpu_lpl; /* pointer to this cpu's load */ 96 int cpu_cache_offset; /* see kmem.c for details */ 97 98 /* 99 * Links to other CPUs. It is safe to walk these lists if 100 * one of the following is true: 101 * - cpu_lock held 102 * - preemption disabled via kpreempt_disable 103 * - PIL >= DISP_LEVEL 104 * - acting thread is an interrupt thread 105 * - all other CPUs are paused 106 */ 107 struct cpu *cpu_next; /* next existing CPU */ 108 struct cpu *cpu_prev; /* prev existing CPU */ 109 struct cpu *cpu_next_onln; /* next online (enabled) CPU */ 110 struct cpu *cpu_prev_onln; /* prev online (enabled) CPU */ 111 struct cpu *cpu_next_part; /* next CPU in partition */ 112 struct cpu *cpu_prev_part; /* prev CPU in partition */ 113 struct cpu *cpu_next_lgrp; /* next CPU in latency group */ 114 struct cpu *cpu_prev_lgrp; /* prev CPU in latency group */ 115 struct cpu *cpu_next_lpl; /* next CPU in lgrp partition */ 116 struct cpu *cpu_prev_lpl; 117 118 struct cpu_pg *cpu_pg; /* cpu's processor groups */ 119 120 void *cpu_reserved[4]; /* reserved for future use */ 121 122 /* 123 * Scheduling variables. 124 */ 125 disp_t *cpu_disp; /* dispatch queue data */ 126 /* 127 * Note that cpu_disp is set before the CPU is added to the system 128 * and is never modified. Hence, no additional locking is needed 129 * beyond what's necessary to access the cpu_t structure. 130 */ 131 char cpu_runrun; /* scheduling flag - set to preempt */ 132 char cpu_kprunrun; /* force kernel preemption */ 133 pri_t cpu_chosen_level; /* priority at which cpu */ 134 /* was chosen for scheduling */ 135 kthread_t *cpu_dispthread; /* thread selected for dispatch */ 136 disp_lock_t cpu_thread_lock; /* dispatcher lock on current thread */ 137 uint8_t cpu_disp_flags; /* flags used by dispatcher */ 138 /* 139 * The following field is updated when ever the cpu_dispthread 140 * changes. Also in places, where the current thread(cpu_dispthread) 141 * priority changes. This is used in disp_lowpri_cpu() 142 */ 143 pri_t cpu_dispatch_pri; /* priority of cpu_dispthread */ 144 clock_t cpu_last_swtch; /* last time switched to new thread */ 145 146 /* 147 * Interrupt data. 148 */ 149 caddr_t cpu_intr_stack; /* interrupt stack */ 150 kthread_t *cpu_intr_thread; /* interrupt thread list */ 151 uint_t cpu_intr_actv; /* interrupt levels active (bitmask) */ 152 int cpu_base_spl; /* priority for highest rupt active */ 153 154 /* 155 * Statistics. 156 */ 157 cpu_stats_t cpu_stats; /* per-CPU statistics */ 158 struct kstat *cpu_info_kstat; /* kstat for cpu info */ 159 160 uintptr_t cpu_profile_pc; /* kernel PC in profile interrupt */ 161 uintptr_t cpu_profile_upc; /* user PC in profile interrupt */ 162 uintptr_t cpu_profile_pil; /* PIL when profile interrupted */ 163 164 ftrace_data_t cpu_ftrace; /* per cpu ftrace data */ 165 166 clock_t cpu_deadman_counter; /* used by deadman() */ 167 uint_t cpu_deadman_countdown; /* used by deadman() */ 168 169 kmutex_t cpu_cpc_ctxlock; /* protects context for idle thread */ 170 kcpc_ctx_t *cpu_cpc_ctx; /* performance counter context */ 171 172 /* 173 * Configuration information for the processor_info system call. 174 */ 175 processor_info_t cpu_type_info; /* config info */ 176 time_t cpu_state_begin; /* when CPU entered current state */ 177 char cpu_cpr_flags; /* CPR related info */ 178 struct cyc_cpu *cpu_cyclic; /* per cpu cyclic subsystem data */ 179 struct squeue_set_s *cpu_squeue_set; /* per cpu squeue set */ 180 struct nvlist *cpu_props; /* pool-related properties */ 181 182 krwlock_t cpu_ft_lock; /* DTrace: fasttrap lock */ 183 uintptr_t cpu_dtrace_caller; /* DTrace: caller, if any */ 184 hrtime_t cpu_dtrace_chillmark; /* DTrace: chill mark time */ 185 hrtime_t cpu_dtrace_chilled; /* DTrace: total chill time */ 186 uint64_t cpu_dtrace_probes; /* DTrace: total probes fired */ 187 hrtime_t cpu_dtrace_nsec; /* DTrace: ns in dtrace_probe */ 188 189 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 uint64_t cpu_curr_clock; /* current clock freq in Hz */ 210 char *cpu_supp_freqs; /* supported freqs in Hz */ 211 212 uintptr_t cpu_cpcprofile_pc; /* kernel PC in cpc interrupt */ 213 uintptr_t cpu_cpcprofile_upc; /* user PC in cpc interrupt */ 214 215 /* 216 * Interrupt load factor used by dispatcher & softcall 217 */ 218 hrtime_t cpu_intrlast; /* total interrupt time (nsec) */ 219 int cpu_intrload; /* interrupt load factor (0-99%) */ 220 221 uint_t cpu_rotor; /* for cheap pseudo-random numbers */ 222 223 struct cu_cpu_info *cpu_cu_info; /* capacity & util. info */ 224 225 /* 226 * cpu_generation is updated whenever CPU goes on-line or off-line. 227 * Updates to cpu_generation are protected by cpu_lock. 228 * 229 * See CPU_NEW_GENERATION() macro below. 230 */ 231 volatile uint_t cpu_generation; /* tracking on/off-line */ 232 233 /* 234 * New members must be added /before/ this member, as the CTF tools 235 * rely on this being the last field before cpu_m, so they can 236 * correctly calculate the offset when synthetically adding the cpu_m 237 * member in objects that do not have it. This fixup is required for 238 * uniquification to work correctly. 239 */ 240 uintptr_t cpu_m_pad; 241 242 #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP) 243 struct machcpu cpu_m; /* per architecture info */ 244 #endif 245 } cpu_t; 246 247 /* 248 * The cpu_core structure consists of per-CPU state available in any context. 249 * On some architectures, this may mean that the page(s) containing the 250 * NCPU-sized array of cpu_core structures must be locked in the TLB -- it 251 * is up to the platform to assure that this is performed properly. Note that 252 * the structure is sized to avoid false sharing. 253 */ 254 #define CPUC_SIZE (sizeof (uint16_t) + sizeof (uint8_t) + \ 255 sizeof (uintptr_t) + sizeof (kmutex_t)) 256 #define CPUC_PADSIZE CPU_CACHE_COHERENCE_SIZE - CPUC_SIZE 257 258 typedef struct cpu_core { 259 uint16_t cpuc_dtrace_flags; /* DTrace flags */ 260 uint8_t cpuc_dcpc_intr_state; /* DCPC provider intr state */ 261 uint8_t cpuc_pad[CPUC_PADSIZE]; /* padding */ 262 uintptr_t cpuc_dtrace_illval; /* DTrace illegal value */ 263 kmutex_t cpuc_pid_lock; /* DTrace pid provider lock */ 264 } cpu_core_t; 265 266 #ifdef _KERNEL 267 extern cpu_core_t cpu_core[]; 268 #endif /* _KERNEL */ 269 270 /* 271 * CPU_ON_INTR() macro. Returns non-zero if currently on interrupt stack. 272 * Note that this isn't a test for a high PIL. For example, cpu_intr_actv 273 * does not get updated when we go through sys_trap from TL>0 at high PIL. 274 * getpil() should be used instead to check for PIL levels. 275 */ 276 #define CPU_ON_INTR(cpup) ((cpup)->cpu_intr_actv >> (LOCK_LEVEL + 1)) 277 278 /* 279 * Check to see if an interrupt thread might be active at a given ipl. 280 * If so return true. 281 * We must be conservative--it is ok to give a false yes, but a false no 282 * will cause disaster. (But if the situation changes after we check it is 283 * ok--the caller is trying to ensure that an interrupt routine has been 284 * exited). 285 * This is used when trying to remove an interrupt handler from an autovector 286 * list in avintr.c. 287 */ 288 #define INTR_ACTIVE(cpup, level) \ 289 ((level) <= LOCK_LEVEL ? \ 290 ((cpup)->cpu_intr_actv & (1 << (level))) : (CPU_ON_INTR(cpup))) 291 292 /* 293 * CPU_PSEUDO_RANDOM() returns a per CPU value that changes each time one 294 * looks at it. It's meant as a cheap mechanism to be incorporated in routines 295 * wanting to avoid biasing, but where true randomness isn't needed (just 296 * something that changes). 297 */ 298 #define CPU_PSEUDO_RANDOM() (CPU->cpu_rotor++) 299 300 #if defined(_KERNEL) || defined(_KMEMUSER) || defined(_BOOT) 301 302 #define INTR_STACK_SIZE MAX(DEFAULTSTKSZ, PAGESIZE) 303 304 /* MEMBERS PROTECTED BY "atomicity": cpu_flags */ 305 306 /* 307 * Flags in the CPU structure. 308 * 309 * These are protected by cpu_lock (except during creation). 310 * 311 * Offlined-CPUs have three stages of being offline: 312 * 313 * CPU_ENABLE indicates that the CPU is participating in I/O interrupts 314 * that can be directed at a number of different CPUs. If CPU_ENABLE 315 * is off, the CPU will not be given interrupts that can be sent elsewhere, 316 * but will still get interrupts from devices associated with that CPU only, 317 * and from other CPUs. 318 * 319 * CPU_OFFLINE indicates that the dispatcher should not allow any threads 320 * other than interrupt threads to run on that CPU. A CPU will not have 321 * CPU_OFFLINE set if there are any bound threads (besides interrupts). 322 * 323 * CPU_QUIESCED is set if p_offline was able to completely turn idle the 324 * CPU and it will not have to run interrupt threads. In this case it'll 325 * stay in the idle loop until CPU_QUIESCED is turned off. 326 * 327 * CPU_FROZEN is used only by CPR to mark CPUs that have been successfully 328 * suspended (in the suspend path), or have yet to be resumed (in the resume 329 * case). 330 * 331 * On some platforms CPUs can be individually powered off. 332 * The following flags are set for powered off CPUs: CPU_QUIESCED, 333 * CPU_OFFLINE, and CPU_POWEROFF. The following flags are cleared: 334 * CPU_RUNNING, CPU_READY, CPU_EXISTS, and CPU_ENABLE. 335 */ 336 #define CPU_RUNNING 0x001 /* CPU running */ 337 #define CPU_READY 0x002 /* CPU ready for cross-calls */ 338 #define CPU_QUIESCED 0x004 /* CPU will stay in idle */ 339 #define CPU_EXISTS 0x008 /* CPU is configured */ 340 #define CPU_ENABLE 0x010 /* CPU enabled for interrupts */ 341 #define CPU_OFFLINE 0x020 /* CPU offline via p_online */ 342 #define CPU_POWEROFF 0x040 /* CPU is powered off */ 343 #define CPU_FROZEN 0x080 /* CPU is frozen via CPR suspend */ 344 #define CPU_SPARE 0x100 /* CPU offline available for use */ 345 #define CPU_FAULTED 0x200 /* CPU offline diagnosed faulty */ 346 347 #define FMT_CPU_FLAGS \ 348 "\20\12fault\11spare\10frozen" \ 349 "\7poweroff\6offline\5enable\4exist\3quiesced\2ready\1run" 350 351 #define CPU_ACTIVE(cpu) (((cpu)->cpu_flags & CPU_OFFLINE) == 0) 352 353 /* 354 * Flags for cpu_offline(), cpu_faulted(), and cpu_spare(). 355 */ 356 #define CPU_FORCED 0x0001 /* Force CPU offline */ 357 358 /* 359 * DTrace flags. 360 */ 361 #define CPU_DTRACE_NOFAULT 0x0001 /* Don't fault */ 362 #define CPU_DTRACE_DROP 0x0002 /* Drop this ECB */ 363 #define CPU_DTRACE_BADADDR 0x0004 /* DTrace fault: bad address */ 364 #define CPU_DTRACE_BADALIGN 0x0008 /* DTrace fault: bad alignment */ 365 #define CPU_DTRACE_DIVZERO 0x0010 /* DTrace fault: divide by zero */ 366 #define CPU_DTRACE_ILLOP 0x0020 /* DTrace fault: illegal operation */ 367 #define CPU_DTRACE_NOSCRATCH 0x0040 /* DTrace fault: out of scratch */ 368 #define CPU_DTRACE_KPRIV 0x0080 /* DTrace fault: bad kernel access */ 369 #define CPU_DTRACE_UPRIV 0x0100 /* DTrace fault: bad user access */ 370 #define CPU_DTRACE_TUPOFLOW 0x0200 /* DTrace fault: tuple stack overflow */ 371 #if defined(__sparc) 372 #define CPU_DTRACE_FAKERESTORE 0x0400 /* pid provider hint to getreg */ 373 #endif 374 #define CPU_DTRACE_ENTRY 0x0800 /* pid provider hint to ustack() */ 375 #define CPU_DTRACE_BADSTACK 0x1000 /* DTrace fault: bad stack */ 376 377 #define CPU_DTRACE_FAULT (CPU_DTRACE_BADADDR | CPU_DTRACE_BADALIGN | \ 378 CPU_DTRACE_DIVZERO | CPU_DTRACE_ILLOP | \ 379 CPU_DTRACE_NOSCRATCH | CPU_DTRACE_KPRIV | \ 380 CPU_DTRACE_UPRIV | CPU_DTRACE_TUPOFLOW | \ 381 CPU_DTRACE_BADSTACK) 382 #define CPU_DTRACE_ERROR (CPU_DTRACE_FAULT | CPU_DTRACE_DROP) 383 384 /* 385 * Dispatcher flags 386 * These flags must be changed only by the current CPU. 387 */ 388 #define CPU_DISP_DONTSTEAL 0x01 /* CPU undergoing context swtch */ 389 #define CPU_DISP_HALTED 0x02 /* CPU halted waiting for interrupt */ 390 391 /* Note: inside ifdef: _KERNEL || _KMEMUSER || _BOOT */ 392 #if defined(_MACHDEP) 393 394 /* 395 * Macros for manipulating sets of CPUs as a bitmap. Note that this 396 * bitmap may vary in size depending on the maximum CPU id a specific 397 * platform supports. This may be different than the number of CPUs 398 * the platform supports, since CPU ids can be sparse. We define two 399 * sets of macros; one for platforms where the maximum CPU id is less 400 * than the number of bits in a single word (32 in a 32-bit kernel, 401 * 64 in a 64-bit kernel), and one for platforms that require bitmaps 402 * of more than one word. 403 */ 404 405 #define CPUSET_WORDS BT_BITOUL(NCPU) 406 #define CPUSET_NOTINSET ((uint_t)-1) 407 408 #if CPUSET_WORDS > 1 409 410 typedef struct cpuset { 411 ulong_t cpub[CPUSET_WORDS]; 412 } cpuset_t; 413 414 /* 415 * Private functions for manipulating cpusets that do not fit in a 416 * single word. These should not be used directly; instead the 417 * CPUSET_* macros should be used so the code will be portable 418 * across different definitions of NCPU. 419 */ 420 extern void cpuset_all(cpuset_t *); 421 extern void cpuset_all_but(cpuset_t *, uint_t); 422 extern int cpuset_isnull(cpuset_t *); 423 extern int cpuset_cmp(cpuset_t *, cpuset_t *); 424 extern void cpuset_only(cpuset_t *, uint_t); 425 extern uint_t cpuset_find(cpuset_t *); 426 extern void cpuset_bounds(cpuset_t *, uint_t *, uint_t *); 427 428 #define CPUSET_ALL(set) cpuset_all(&(set)) 429 #define CPUSET_ALL_BUT(set, cpu) cpuset_all_but(&(set), cpu) 430 #define CPUSET_ONLY(set, cpu) cpuset_only(&(set), cpu) 431 #define CPU_IN_SET(set, cpu) BT_TEST((set).cpub, cpu) 432 #define CPUSET_ADD(set, cpu) BT_SET((set).cpub, cpu) 433 #define CPUSET_DEL(set, cpu) BT_CLEAR((set).cpub, cpu) 434 #define CPUSET_ISNULL(set) cpuset_isnull(&(set)) 435 #define CPUSET_ISEQUAL(set1, set2) cpuset_cmp(&(set1), &(set2)) 436 437 /* 438 * Find one CPU in the cpuset. 439 * Sets "cpu" to the id of the found CPU, or CPUSET_NOTINSET if no cpu 440 * could be found. (i.e. empty set) 441 */ 442 #define CPUSET_FIND(set, cpu) { \ 443 cpu = cpuset_find(&(set)); \ 444 } 445 446 /* 447 * Determine the smallest and largest CPU id in the set. Returns 448 * CPUSET_NOTINSET in smallest and largest when set is empty. 449 */ 450 #define CPUSET_BOUNDS(set, smallest, largest) { \ 451 cpuset_bounds(&(set), &(smallest), &(largest)); \ 452 } 453 454 /* 455 * Atomic cpuset operations 456 * These are safe to use for concurrent cpuset manipulations. 457 * "xdel" and "xadd" are exclusive operations, that set "result" to "0" 458 * if the add or del was successful, or "-1" if not successful. 459 * (e.g. attempting to add a cpu to a cpuset that's already there, or 460 * deleting a cpu that's not in the cpuset) 461 */ 462 463 #define CPUSET_ATOMIC_DEL(set, cpu) BT_ATOMIC_CLEAR((set).cpub, (cpu)) 464 #define CPUSET_ATOMIC_ADD(set, cpu) BT_ATOMIC_SET((set).cpub, (cpu)) 465 466 #define CPUSET_ATOMIC_XADD(set, cpu, result) \ 467 BT_ATOMIC_SET_EXCL((set).cpub, cpu, result) 468 469 #define CPUSET_ATOMIC_XDEL(set, cpu, result) \ 470 BT_ATOMIC_CLEAR_EXCL((set).cpub, cpu, result) 471 472 473 #define CPUSET_OR(set1, set2) { \ 474 int _i; \ 475 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 476 (set1).cpub[_i] |= (set2).cpub[_i]; \ 477 } 478 479 #define CPUSET_XOR(set1, set2) { \ 480 int _i; \ 481 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 482 (set1).cpub[_i] ^= (set2).cpub[_i]; \ 483 } 484 485 #define CPUSET_AND(set1, set2) { \ 486 int _i; \ 487 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 488 (set1).cpub[_i] &= (set2).cpub[_i]; \ 489 } 490 491 #define CPUSET_ZERO(set) { \ 492 int _i; \ 493 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 494 (set).cpub[_i] = 0; \ 495 } 496 497 #elif CPUSET_WORDS == 1 498 499 typedef ulong_t cpuset_t; /* a set of CPUs */ 500 501 #define CPUSET(cpu) (1UL << (cpu)) 502 503 #define CPUSET_ALL(set) ((void)((set) = ~0UL)) 504 #define CPUSET_ALL_BUT(set, cpu) ((void)((set) = ~CPUSET(cpu))) 505 #define CPUSET_ONLY(set, cpu) ((void)((set) = CPUSET(cpu))) 506 #define CPU_IN_SET(set, cpu) ((set) & CPUSET(cpu)) 507 #define CPUSET_ADD(set, cpu) ((void)((set) |= CPUSET(cpu))) 508 #define CPUSET_DEL(set, cpu) ((void)((set) &= ~CPUSET(cpu))) 509 #define CPUSET_ISNULL(set) ((set) == 0) 510 #define CPUSET_ISEQUAL(set1, set2) ((set1) == (set2)) 511 #define CPUSET_OR(set1, set2) ((void)((set1) |= (set2))) 512 #define CPUSET_XOR(set1, set2) ((void)((set1) ^= (set2))) 513 #define CPUSET_AND(set1, set2) ((void)((set1) &= (set2))) 514 #define CPUSET_ZERO(set) ((void)((set) = 0)) 515 516 #define CPUSET_FIND(set, cpu) { \ 517 cpu = (uint_t)(lowbit(set) - 1); \ 518 } 519 520 #define CPUSET_BOUNDS(set, smallest, largest) { \ 521 smallest = (uint_t)(lowbit(set) - 1); \ 522 largest = (uint_t)(highbit(set) - 1); \ 523 } 524 525 #define CPUSET_ATOMIC_DEL(set, cpu) atomic_and_ulong(&(set), ~CPUSET(cpu)) 526 #define CPUSET_ATOMIC_ADD(set, cpu) atomic_or_ulong(&(set), CPUSET(cpu)) 527 528 #define CPUSET_ATOMIC_XADD(set, cpu, result) \ 529 { result = atomic_set_long_excl(&(set), (cpu)); } 530 531 #define CPUSET_ATOMIC_XDEL(set, cpu, result) \ 532 { result = atomic_clear_long_excl(&(set), (cpu)); } 533 534 #else /* CPUSET_WORDS <= 0 */ 535 536 #error NCPU is undefined or invalid 537 538 #endif /* CPUSET_WORDS */ 539 540 extern cpuset_t cpu_seqid_inuse; 541 542 #endif /* _MACHDEP */ 543 #endif /* _KERNEL || _KMEMUSER || _BOOT */ 544 545 #define CPU_CPR_OFFLINE 0x0 546 #define CPU_CPR_ONLINE 0x1 547 #define CPU_CPR_IS_OFFLINE(cpu) (((cpu)->cpu_cpr_flags & CPU_CPR_ONLINE) == 0) 548 #define CPU_CPR_IS_ONLINE(cpu) ((cpu)->cpu_cpr_flags & CPU_CPR_ONLINE) 549 #define CPU_SET_CPR_FLAGS(cpu, flag) ((cpu)->cpu_cpr_flags |= flag) 550 551 #if defined(_KERNEL) || defined(_KMEMUSER) 552 553 extern struct cpu *cpu[]; /* indexed by CPU number */ 554 extern struct cpu **cpu_seq; /* indexed by sequential CPU id */ 555 extern cpu_t *cpu_list; /* list of CPUs */ 556 extern cpu_t *cpu_active; /* list of active CPUs */ 557 extern int ncpus; /* number of CPUs present */ 558 extern int ncpus_online; /* number of CPUs not quiesced */ 559 extern int max_ncpus; /* max present before ncpus is known */ 560 extern int boot_max_ncpus; /* like max_ncpus but for real */ 561 extern int boot_ncpus; /* # cpus present @ boot */ 562 extern processorid_t max_cpuid; /* maximum CPU number */ 563 extern struct cpu *cpu_inmotion; /* offline or partition move target */ 564 extern cpu_t *clock_cpu_list; 565 extern processorid_t max_cpu_seqid_ever; /* maximum seqid ever given */ 566 567 #if defined(__i386) || defined(__amd64) 568 extern struct cpu *curcpup(void); 569 #define CPU (curcpup()) /* Pointer to current CPU */ 570 #else 571 #define CPU (curthread->t_cpu) /* Pointer to current CPU */ 572 #endif 573 574 /* 575 * CPU_CURRENT indicates to thread_affinity_set to use CPU->cpu_id 576 * as the target and to grab cpu_lock instead of requiring the caller 577 * to grab it. 578 */ 579 #define CPU_CURRENT -3 580 581 /* 582 * Per-CPU statistics 583 * 584 * cpu_stats_t contains numerous system and VM-related statistics, in the form 585 * of gauges or monotonically-increasing event occurrence counts. 586 */ 587 588 #define CPU_STATS_ENTER_K() kpreempt_disable() 589 #define CPU_STATS_EXIT_K() kpreempt_enable() 590 591 #define CPU_STATS_ADD_K(class, stat, amount) \ 592 { kpreempt_disable(); /* keep from switching CPUs */\ 593 CPU_STATS_ADDQ(CPU, class, stat, amount); \ 594 kpreempt_enable(); \ 595 } 596 597 #define CPU_STATS_ADDQ(cp, class, stat, amount) { \ 598 extern void __dtrace_probe___cpu_##class##info_##stat(uint_t, \ 599 uint64_t *, cpu_t *); \ 600 uint64_t *stataddr = &((cp)->cpu_stats.class.stat); \ 601 __dtrace_probe___cpu_##class##info_##stat((amount), \ 602 stataddr, cp); \ 603 *(stataddr) += (amount); \ 604 } 605 606 #define CPU_STATS(cp, stat) \ 607 ((cp)->cpu_stats.stat) 608 609 /* 610 * Increment CPU generation value. 611 * This macro should be called whenever CPU goes on-line or off-line. 612 * Updates to cpu_generation should be protected by cpu_lock. 613 */ 614 #define CPU_NEW_GENERATION(cp) ((cp)->cpu_generation++) 615 616 #endif /* _KERNEL || _KMEMUSER */ 617 618 /* 619 * CPU support routines (not for genassym.c) 620 */ 621 #if (defined(_KERNEL) || defined(_FAKE_KERNEL)) && defined(__STDC__) 622 623 struct zone; 624 625 void cpu_list_init(cpu_t *); 626 void cpu_add_unit(cpu_t *); 627 void cpu_del_unit(int cpuid); 628 void cpu_add_active(cpu_t *); 629 void cpu_kstat_init(cpu_t *); 630 void cpu_visibility_add(cpu_t *, struct zone *); 631 void cpu_visibility_remove(cpu_t *, struct zone *); 632 void cpu_visibility_configure(cpu_t *, struct zone *); 633 void cpu_visibility_unconfigure(cpu_t *, struct zone *); 634 void cpu_visibility_online(cpu_t *, struct zone *); 635 void cpu_visibility_offline(cpu_t *, struct zone *); 636 void cpu_create_intrstat(cpu_t *); 637 void cpu_delete_intrstat(cpu_t *); 638 int cpu_kstat_intrstat_update(kstat_t *, int); 639 void cpu_intr_swtch_enter(kthread_t *); 640 void cpu_intr_swtch_exit(kthread_t *); 641 642 void mbox_lock_init(void); /* initialize cross-call locks */ 643 void mbox_init(int cpun); /* initialize cross-calls */ 644 void poke_cpu(int cpun); /* interrupt another CPU (to preempt) */ 645 646 /* 647 * values for safe_list. Pause state that CPUs are in. 648 */ 649 #define PAUSE_IDLE 0 /* normal state */ 650 #define PAUSE_READY 1 /* paused thread ready to spl */ 651 #define PAUSE_WAIT 2 /* paused thread is spl-ed high */ 652 #define PAUSE_DIE 3 /* tell pause thread to leave */ 653 #define PAUSE_DEAD 4 /* pause thread has left */ 654 655 void mach_cpu_pause(volatile char *); 656 657 void pause_cpus(cpu_t *off_cp, void *(*func)(void *)); 658 void start_cpus(void); 659 int cpus_paused(void); 660 661 void cpu_pause_init(void); 662 cpu_t *cpu_get(processorid_t cpun); /* get the CPU struct associated */ 663 664 int cpu_online(cpu_t *cp); /* take cpu online */ 665 int cpu_offline(cpu_t *cp, int flags); /* take cpu offline */ 666 int cpu_spare(cpu_t *cp, int flags); /* take cpu to spare */ 667 int cpu_faulted(cpu_t *cp, int flags); /* take cpu to faulted */ 668 int cpu_poweron(cpu_t *cp); /* take powered-off cpu to offline */ 669 int cpu_poweroff(cpu_t *cp); /* take offline cpu to powered-off */ 670 671 cpu_t *cpu_intr_next(cpu_t *cp); /* get next online CPU taking intrs */ 672 int cpu_intr_count(cpu_t *cp); /* count # of CPUs handling intrs */ 673 int cpu_intr_on(cpu_t *cp); /* CPU taking I/O interrupts? */ 674 void cpu_intr_enable(cpu_t *cp); /* enable I/O interrupts */ 675 int cpu_intr_disable(cpu_t *cp); /* disable I/O interrupts */ 676 void cpu_intr_alloc(cpu_t *cp, int n); /* allocate interrupt threads */ 677 678 /* 679 * Routines for checking CPU states. 680 */ 681 int cpu_is_online(cpu_t *); /* check if CPU is online */ 682 int cpu_is_nointr(cpu_t *); /* check if CPU can service intrs */ 683 int cpu_is_active(cpu_t *); /* check if CPU can run threads */ 684 int cpu_is_offline(cpu_t *); /* check if CPU is offline */ 685 int cpu_is_poweredoff(cpu_t *); /* check if CPU is powered off */ 686 687 int cpu_flagged_online(cpu_flag_t); /* flags show CPU is online */ 688 int cpu_flagged_nointr(cpu_flag_t); /* flags show CPU not handling intrs */ 689 int cpu_flagged_active(cpu_flag_t); /* flags show CPU scheduling threads */ 690 int cpu_flagged_offline(cpu_flag_t); /* flags show CPU is offline */ 691 int cpu_flagged_poweredoff(cpu_flag_t); /* flags show CPU is powered off */ 692 693 /* 694 * The processor_info(2) state of a CPU is a simplified representation suitable 695 * for use by an application program. Kernel subsystems should utilize the 696 * internal per-CPU state as given by the cpu_flags member of the cpu structure, 697 * as this information may include platform- or architecture-specific state 698 * critical to a subsystem's disposition of a particular CPU. 699 */ 700 void cpu_set_state(cpu_t *); /* record/timestamp current state */ 701 int cpu_get_state(cpu_t *); /* get current cpu state */ 702 const char *cpu_get_state_str(cpu_t *); /* get current cpu state as string */ 703 704 705 void cpu_set_curr_clock(uint64_t); /* indicate the current CPU's freq */ 706 void cpu_set_supp_freqs(cpu_t *, const char *); /* set the CPU supported */ 707 /* frequencies */ 708 709 int cpu_configure(int); 710 int cpu_unconfigure(int); 711 void cpu_destroy_bound_threads(cpu_t *cp); 712 713 extern int cpu_bind_thread(kthread_t *tp, processorid_t bind, 714 processorid_t *obind, int *error); 715 extern int cpu_unbind(processorid_t cpu_id, boolean_t force); 716 extern void thread_affinity_set(kthread_t *t, int cpu_id); 717 extern void thread_affinity_clear(kthread_t *t); 718 extern void affinity_set(int cpu_id); 719 extern void affinity_clear(void); 720 extern void init_cpu_mstate(struct cpu *, int); 721 extern void term_cpu_mstate(struct cpu *); 722 extern void new_cpu_mstate(int, hrtime_t); 723 extern void get_cpu_mstate(struct cpu *, hrtime_t *); 724 extern void thread_nomigrate(void); 725 extern void thread_allowmigrate(void); 726 extern void weakbinding_stop(void); 727 extern void weakbinding_start(void); 728 729 /* 730 * The following routines affect the CPUs participation in interrupt processing, 731 * if that is applicable on the architecture. This only affects interrupts 732 * which aren't directed at the processor (not cross calls). 733 * 734 * cpu_disable_intr returns non-zero if interrupts were previously enabled. 735 */ 736 int cpu_disable_intr(struct cpu *cp); /* stop issuing interrupts to cpu */ 737 void cpu_enable_intr(struct cpu *cp); /* start issuing interrupts to cpu */ 738 739 /* 740 * The mutex cpu_lock protects cpu_flags for all CPUs, as well as the ncpus 741 * and ncpus_online counts. 742 */ 743 extern kmutex_t cpu_lock; /* lock protecting CPU data */ 744 745 /* 746 * CPU state change events 747 * 748 * Various subsystems need to know when CPUs change their state. They get this 749 * information by registering CPU state change callbacks using 750 * register_cpu_setup_func(). Whenever any CPU changes its state, the callback 751 * function is called. The callback function is passed three arguments: 752 * 753 * Event, described by cpu_setup_t 754 * CPU ID 755 * Transparent pointer passed when registering the callback 756 * 757 * The callback function is called with cpu_lock held. The return value from the 758 * callback function is usually ignored, except for CPU_CONFIG and CPU_UNCONFIG 759 * events. For these two events, non-zero return value indicates a failure and 760 * prevents successful completion of the operation. 761 * 762 * New events may be added in the future. Callback functions should ignore any 763 * events that they do not understand. 764 * 765 * The following events provide notification callbacks: 766 * 767 * CPU_INIT A new CPU is started and added to the list of active CPUs 768 * This event is only used during boot 769 * 770 * CPU_CONFIG A newly inserted CPU is prepared for starting running code 771 * This event is called by DR code 772 * 773 * CPU_UNCONFIG CPU has been powered off and needs cleanup 774 * This event is called by DR code 775 * 776 * CPU_ON CPU is enabled but does not run anything yet 777 * 778 * CPU_INTR_ON CPU is enabled and has interrupts enabled 779 * 780 * CPU_OFF CPU is going offline but can still run threads 781 * 782 * CPU_CPUPART_OUT CPU is going to move out of its partition 783 * 784 * CPU_CPUPART_IN CPU is going to move to a new partition 785 * 786 * CPU_SETUP CPU is set up during boot and can run threads 787 */ 788 typedef enum { 789 CPU_INIT, 790 CPU_CONFIG, 791 CPU_UNCONFIG, 792 CPU_ON, 793 CPU_OFF, 794 CPU_CPUPART_IN, 795 CPU_CPUPART_OUT, 796 CPU_SETUP, 797 CPU_INTR_ON 798 } cpu_setup_t; 799 800 typedef int cpu_setup_func_t(cpu_setup_t, int, void *); 801 802 /* 803 * Routines used to register interest in cpu's being added to or removed 804 * from the system. 805 */ 806 extern void register_cpu_setup_func(cpu_setup_func_t *, void *); 807 extern void unregister_cpu_setup_func(cpu_setup_func_t *, void *); 808 extern void cpu_state_change_notify(int, cpu_setup_t); 809 810 /* 811 * Call specified function on the given CPU 812 */ 813 typedef void (*cpu_call_func_t)(uintptr_t, uintptr_t); 814 extern void cpu_call(cpu_t *, cpu_call_func_t, uintptr_t, uintptr_t); 815 816 817 /* 818 * Create various strings that describe the given CPU for the 819 * processor_info system call and configuration-related kstats. 820 */ 821 #define CPU_IDSTRLEN 100 822 823 extern void init_cpu_info(struct cpu *); 824 extern void populate_idstr(struct cpu *); 825 extern void cpu_vm_data_init(struct cpu *); 826 extern void cpu_vm_data_destroy(struct cpu *); 827 828 #endif /* _KERNEL || _FAKE_KERNEL */ 829 830 #ifdef __cplusplus 831 } 832 #endif 833 834 #endif /* _SYS_CPUVAR_H */ 835