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 */ 26 27 #ifndef _SYS_CPUVAR_H 28 #define _SYS_CPUVAR_H 29 30 #include <sys/thread.h> 31 #include <sys/sysinfo.h> /* has cpu_stat_t definition */ 32 #include <sys/disp.h> 33 #include <sys/processor.h> 34 35 #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP) 36 #include <sys/machcpuvar.h> 37 #endif 38 39 #include <sys/types.h> 40 #include <sys/file.h> 41 #include <sys/bitmap.h> 42 #include <sys/rwlock.h> 43 #include <sys/msacct.h> 44 #if defined(__GNUC__) && defined(_ASM_INLINES) && defined(_KERNEL) && \ 45 (defined(__i386) || defined(__amd64)) 46 #include <asm/cpuvar.h> 47 #endif 48 49 #ifdef __cplusplus 50 extern "C" { 51 #endif 52 53 struct squeue_set_s; 54 55 #define CPU_CACHE_COHERENCE_SIZE 64 56 #define S_LOADAVG_SZ 11 57 #define S_MOVAVG_SZ 10 58 59 struct loadavg_s { 60 int lg_cur; /* current loadavg entry */ 61 unsigned int lg_len; /* number entries recorded */ 62 hrtime_t lg_total; /* used to temporarily hold load totals */ 63 hrtime_t lg_loads[S_LOADAVG_SZ]; /* table of recorded entries */ 64 }; 65 66 /* 67 * For fast event tracing. 68 */ 69 struct ftrace_record; 70 typedef struct ftrace_data { 71 int ftd_state; /* ftrace flags */ 72 kmutex_t ftd_unused; /* ftrace buffer lock, unused */ 73 struct ftrace_record *ftd_cur; /* current record */ 74 struct ftrace_record *ftd_first; /* first record */ 75 struct ftrace_record *ftd_last; /* last record */ 76 } ftrace_data_t; 77 78 struct cyc_cpu; 79 struct nvlist; 80 81 /* 82 * Per-CPU data. 83 * 84 * Be careful adding new members: if they are not the same in all modules (e.g. 85 * change size depending on a #define), CTF uniquification can fail to work 86 * properly. Furthermore, this is transitive in that it applies recursively to 87 * all types pointed to by cpu_t. 88 */ 89 typedef struct cpu { 90 processorid_t cpu_id; /* CPU number */ 91 processorid_t cpu_seqid; /* sequential CPU id (0..ncpus-1) */ 92 volatile cpu_flag_t cpu_flags; /* flags indicating CPU state */ 93 struct cpu *cpu_self; /* pointer to itself */ 94 kthread_t *cpu_thread; /* current thread */ 95 kthread_t *cpu_idle_thread; /* idle thread for this CPU */ 96 kthread_t *cpu_pause_thread; /* pause thread for this CPU */ 97 klwp_id_t cpu_lwp; /* current lwp (if any) */ 98 klwp_id_t cpu_fpowner; /* currently loaded fpu owner */ 99 struct cpupart *cpu_part; /* partition with this CPU */ 100 struct lgrp_ld *cpu_lpl; /* pointer to this cpu's load */ 101 int cpu_cache_offset; /* see kmem.c for details */ 102 103 /* 104 * Links to other CPUs. It is safe to walk these lists if 105 * one of the following is true: 106 * - cpu_lock held 107 * - preemption disabled via kpreempt_disable 108 * - PIL >= DISP_LEVEL 109 * - acting thread is an interrupt thread 110 * - all other CPUs are paused 111 */ 112 struct cpu *cpu_next; /* next existing CPU */ 113 struct cpu *cpu_prev; /* prev existing CPU */ 114 struct cpu *cpu_next_onln; /* next online (enabled) CPU */ 115 struct cpu *cpu_prev_onln; /* prev online (enabled) CPU */ 116 struct cpu *cpu_next_part; /* next CPU in partition */ 117 struct cpu *cpu_prev_part; /* prev CPU in partition */ 118 struct cpu *cpu_next_lgrp; /* next CPU in latency group */ 119 struct cpu *cpu_prev_lgrp; /* prev CPU in latency group */ 120 struct cpu *cpu_next_lpl; /* next CPU in lgrp partition */ 121 struct cpu *cpu_prev_lpl; 122 123 struct cpu_pg *cpu_pg; /* cpu's processor groups */ 124 125 void *cpu_reserved[4]; /* reserved for future use */ 126 127 /* 128 * Scheduling variables. 129 */ 130 disp_t *cpu_disp; /* dispatch queue data */ 131 /* 132 * Note that cpu_disp is set before the CPU is added to the system 133 * and is never modified. Hence, no additional locking is needed 134 * beyond what's necessary to access the cpu_t structure. 135 */ 136 char cpu_runrun; /* scheduling flag - set to preempt */ 137 char cpu_kprunrun; /* force kernel preemption */ 138 pri_t cpu_chosen_level; /* priority at which cpu */ 139 /* was chosen for scheduling */ 140 kthread_t *cpu_dispthread; /* thread selected for dispatch */ 141 disp_lock_t cpu_thread_lock; /* dispatcher lock on current thread */ 142 uint8_t cpu_disp_flags; /* flags used by dispatcher */ 143 /* 144 * The following field is updated when ever the cpu_dispthread 145 * changes. Also in places, where the current thread(cpu_dispthread) 146 * priority changes. This is used in disp_lowpri_cpu() 147 */ 148 pri_t cpu_dispatch_pri; /* priority of cpu_dispthread */ 149 clock_t cpu_last_swtch; /* last time switched to new thread */ 150 151 /* 152 * Interrupt data. 153 */ 154 caddr_t cpu_intr_stack; /* interrupt stack */ 155 kthread_t *cpu_intr_thread; /* interrupt thread list */ 156 uint_t cpu_intr_actv; /* interrupt levels active (bitmask) */ 157 int cpu_base_spl; /* priority for highest rupt active */ 158 159 /* 160 * Statistics. 161 */ 162 cpu_stats_t cpu_stats; /* per-CPU statistics */ 163 struct kstat *cpu_info_kstat; /* kstat for cpu info */ 164 165 uintptr_t cpu_profile_pc; /* kernel PC in profile interrupt */ 166 uintptr_t cpu_profile_upc; /* user PC in profile interrupt */ 167 uintptr_t cpu_profile_pil; /* PIL when profile interrupted */ 168 169 ftrace_data_t cpu_ftrace; /* per cpu ftrace data */ 170 171 clock_t cpu_deadman_counter; /* used by deadman() */ 172 uint_t cpu_deadman_countdown; /* used by deadman() */ 173 174 kmutex_t cpu_cpc_ctxlock; /* protects context for idle thread */ 175 kcpc_ctx_t *cpu_cpc_ctx; /* performance counter context */ 176 177 /* 178 * Configuration information for the processor_info system call. 179 */ 180 processor_info_t cpu_type_info; /* config info */ 181 time_t cpu_state_begin; /* when CPU entered current state */ 182 char cpu_cpr_flags; /* CPR related info */ 183 struct cyc_cpu *cpu_cyclic; /* per cpu cyclic subsystem data */ 184 struct squeue_set_s *cpu_squeue_set; /* per cpu squeue set */ 185 struct nvlist *cpu_props; /* pool-related properties */ 186 187 krwlock_t cpu_ft_lock; /* DTrace: fasttrap lock */ 188 uintptr_t cpu_dtrace_caller; /* DTrace: caller, if any */ 189 hrtime_t cpu_dtrace_chillmark; /* DTrace: chill mark time */ 190 hrtime_t cpu_dtrace_chilled; /* DTrace: total chill time */ 191 uint64_t cpu_dtrace_probes; /* DTrace: total probes fired */ 192 hrtime_t cpu_dtrace_nsec; /* DTrace: ns in dtrace_probe */ 193 194 volatile uint16_t cpu_mstate; /* cpu microstate */ 195 volatile uint16_t cpu_mstate_gen; /* generation counter */ 196 volatile hrtime_t cpu_mstate_start; /* cpu microstate start time */ 197 volatile hrtime_t cpu_acct[NCMSTATES]; /* cpu microstate data */ 198 hrtime_t cpu_intracct[NCMSTATES]; /* interrupt mstate data */ 199 hrtime_t cpu_waitrq; /* cpu run-queue wait time */ 200 struct loadavg_s cpu_loadavg; /* loadavg info for this cpu */ 201 202 char *cpu_idstr; /* for printing and debugging */ 203 char *cpu_brandstr; /* for printing */ 204 205 /* 206 * Sum of all device interrupt weights that are currently directed at 207 * this cpu. Cleared at start of interrupt redistribution. 208 */ 209 int32_t cpu_intr_weight; 210 void *cpu_vm_data; 211 212 struct cpu_physid *cpu_physid; /* physical associations */ 213 214 uint64_t cpu_curr_clock; /* current clock freq in Hz */ 215 char *cpu_supp_freqs; /* supported freqs in Hz */ 216 217 uintptr_t cpu_cpcprofile_pc; /* kernel PC in cpc interrupt */ 218 uintptr_t cpu_cpcprofile_upc; /* user PC in cpc interrupt */ 219 220 /* 221 * Interrupt load factor used by dispatcher & softcall 222 */ 223 hrtime_t cpu_intrlast; /* total interrupt time (nsec) */ 224 int cpu_intrload; /* interrupt load factor (0-99%) */ 225 226 uint_t cpu_rotor; /* for cheap pseudo-random numbers */ 227 228 struct cu_cpu_info *cpu_cu_info; /* capacity & util. info */ 229 230 /* 231 * cpu_generation is updated whenever CPU goes on-line or off-line. 232 * Updates to cpu_generation are protected by cpu_lock. 233 * 234 * See CPU_NEW_GENERATION() macro below. 235 */ 236 volatile uint_t cpu_generation; /* tracking on/off-line */ 237 238 /* 239 * New members must be added /before/ this member, as the CTF tools 240 * rely on this being the last field before cpu_m, so they can 241 * correctly calculate the offset when synthetically adding the cpu_m 242 * member in objects that do not have it. This fixup is required for 243 * uniquification to work correctly. 244 */ 245 uintptr_t cpu_m_pad; 246 247 #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP) 248 struct machcpu cpu_m; /* per architecture info */ 249 #endif 250 } cpu_t; 251 252 /* 253 * The cpu_core structure consists of per-CPU state available in any context. 254 * On some architectures, this may mean that the page(s) containing the 255 * NCPU-sized array of cpu_core structures must be locked in the TLB -- it 256 * is up to the platform to assure that this is performed properly. Note that 257 * the structure is sized to avoid false sharing. 258 */ 259 #define CPUC_SIZE (sizeof (uint16_t) + sizeof (uint8_t) + \ 260 sizeof (uintptr_t) + sizeof (kmutex_t)) 261 #define CPUC_PADSIZE CPU_CACHE_COHERENCE_SIZE - CPUC_SIZE 262 263 typedef struct cpu_core { 264 uint16_t cpuc_dtrace_flags; /* DTrace flags */ 265 uint8_t cpuc_dcpc_intr_state; /* DCPC provider intr state */ 266 uint8_t cpuc_pad[CPUC_PADSIZE]; /* padding */ 267 uintptr_t cpuc_dtrace_illval; /* DTrace illegal value */ 268 kmutex_t cpuc_pid_lock; /* DTrace pid provider lock */ 269 } cpu_core_t; 270 271 #ifdef _KERNEL 272 extern cpu_core_t cpu_core[]; 273 #endif /* _KERNEL */ 274 275 /* 276 * CPU_ON_INTR() macro. Returns non-zero if currently on interrupt stack. 277 * Note that this isn't a test for a high PIL. For example, cpu_intr_actv 278 * does not get updated when we go through sys_trap from TL>0 at high PIL. 279 * getpil() should be used instead to check for PIL levels. 280 */ 281 #define CPU_ON_INTR(cpup) ((cpup)->cpu_intr_actv >> (LOCK_LEVEL + 1)) 282 283 /* 284 * Check to see if an interrupt thread might be active at a given ipl. 285 * If so return true. 286 * We must be conservative--it is ok to give a false yes, but a false no 287 * will cause disaster. (But if the situation changes after we check it is 288 * ok--the caller is trying to ensure that an interrupt routine has been 289 * exited). 290 * This is used when trying to remove an interrupt handler from an autovector 291 * list in avintr.c. 292 */ 293 #define INTR_ACTIVE(cpup, level) \ 294 ((level) <= LOCK_LEVEL ? \ 295 ((cpup)->cpu_intr_actv & (1 << (level))) : (CPU_ON_INTR(cpup))) 296 297 /* 298 * CPU_PSEUDO_RANDOM() returns a per CPU value that changes each time one 299 * looks at it. It's meant as a cheap mechanism to be incorporated in routines 300 * wanting to avoid biasing, but where true randomness isn't needed (just 301 * something that changes). 302 */ 303 #define CPU_PSEUDO_RANDOM() (CPU->cpu_rotor++) 304 305 #if defined(_KERNEL) || defined(_KMEMUSER) 306 307 #define INTR_STACK_SIZE MAX(DEFAULTSTKSZ, PAGESIZE) 308 309 /* MEMBERS PROTECTED BY "atomicity": cpu_flags */ 310 311 /* 312 * Flags in the CPU structure. 313 * 314 * These are protected by cpu_lock (except during creation). 315 * 316 * Offlined-CPUs have three stages of being offline: 317 * 318 * CPU_ENABLE indicates that the CPU is participating in I/O interrupts 319 * that can be directed at a number of different CPUs. If CPU_ENABLE 320 * is off, the CPU will not be given interrupts that can be sent elsewhere, 321 * but will still get interrupts from devices associated with that CPU only, 322 * and from other CPUs. 323 * 324 * CPU_OFFLINE indicates that the dispatcher should not allow any threads 325 * other than interrupt threads to run on that CPU. A CPU will not have 326 * CPU_OFFLINE set if there are any bound threads (besides interrupts). 327 * 328 * CPU_QUIESCED is set if p_offline was able to completely turn idle the 329 * CPU and it will not have to run interrupt threads. In this case it'll 330 * stay in the idle loop until CPU_QUIESCED is turned off. 331 * 332 * CPU_FROZEN is used only by CPR to mark CPUs that have been successfully 333 * suspended (in the suspend path), or have yet to be resumed (in the resume 334 * case). 335 * 336 * On some platforms CPUs can be individually powered off. 337 * The following flags are set for powered off CPUs: CPU_QUIESCED, 338 * CPU_OFFLINE, and CPU_POWEROFF. The following flags are cleared: 339 * CPU_RUNNING, CPU_READY, CPU_EXISTS, and CPU_ENABLE. 340 */ 341 #define CPU_RUNNING 0x001 /* CPU running */ 342 #define CPU_READY 0x002 /* CPU ready for cross-calls */ 343 #define CPU_QUIESCED 0x004 /* CPU will stay in idle */ 344 #define CPU_EXISTS 0x008 /* CPU is configured */ 345 #define CPU_ENABLE 0x010 /* CPU enabled for interrupts */ 346 #define CPU_OFFLINE 0x020 /* CPU offline via p_online */ 347 #define CPU_POWEROFF 0x040 /* CPU is powered off */ 348 #define CPU_FROZEN 0x080 /* CPU is frozen via CPR suspend */ 349 #define CPU_SPARE 0x100 /* CPU offline available for use */ 350 #define CPU_FAULTED 0x200 /* CPU offline diagnosed faulty */ 351 352 #define FMT_CPU_FLAGS \ 353 "\20\12fault\11spare\10frozen" \ 354 "\7poweroff\6offline\5enable\4exist\3quiesced\2ready\1run" 355 356 #define CPU_ACTIVE(cpu) (((cpu)->cpu_flags & CPU_OFFLINE) == 0) 357 358 /* 359 * Flags for cpu_offline(), cpu_faulted(), and cpu_spare(). 360 */ 361 #define CPU_FORCED 0x0001 /* Force CPU offline */ 362 363 /* 364 * DTrace flags. 365 */ 366 #define CPU_DTRACE_NOFAULT 0x0001 /* Don't fault */ 367 #define CPU_DTRACE_DROP 0x0002 /* Drop this ECB */ 368 #define CPU_DTRACE_BADADDR 0x0004 /* DTrace fault: bad address */ 369 #define CPU_DTRACE_BADALIGN 0x0008 /* DTrace fault: bad alignment */ 370 #define CPU_DTRACE_DIVZERO 0x0010 /* DTrace fault: divide by zero */ 371 #define CPU_DTRACE_ILLOP 0x0020 /* DTrace fault: illegal operation */ 372 #define CPU_DTRACE_NOSCRATCH 0x0040 /* DTrace fault: out of scratch */ 373 #define CPU_DTRACE_KPRIV 0x0080 /* DTrace fault: bad kernel access */ 374 #define CPU_DTRACE_UPRIV 0x0100 /* DTrace fault: bad user access */ 375 #define CPU_DTRACE_TUPOFLOW 0x0200 /* DTrace fault: tuple stack overflow */ 376 #if defined(__sparc) 377 #define CPU_DTRACE_FAKERESTORE 0x0400 /* pid provider hint to getreg */ 378 #endif 379 #define CPU_DTRACE_ENTRY 0x0800 /* pid provider hint to ustack() */ 380 #define CPU_DTRACE_BADSTACK 0x1000 /* DTrace fault: bad stack */ 381 382 #define CPU_DTRACE_FAULT (CPU_DTRACE_BADADDR | CPU_DTRACE_BADALIGN | \ 383 CPU_DTRACE_DIVZERO | CPU_DTRACE_ILLOP | \ 384 CPU_DTRACE_NOSCRATCH | CPU_DTRACE_KPRIV | \ 385 CPU_DTRACE_UPRIV | CPU_DTRACE_TUPOFLOW | \ 386 CPU_DTRACE_BADSTACK) 387 #define CPU_DTRACE_ERROR (CPU_DTRACE_FAULT | CPU_DTRACE_DROP) 388 389 /* 390 * Dispatcher flags 391 * These flags must be changed only by the current CPU. 392 */ 393 #define CPU_DISP_DONTSTEAL 0x01 /* CPU undergoing context swtch */ 394 #define CPU_DISP_HALTED 0x02 /* CPU halted waiting for interrupt */ 395 396 #endif /* _KERNEL || _KMEMUSER */ 397 398 #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP) 399 400 /* 401 * Macros for manipulating sets of CPUs as a bitmap. Note that this 402 * bitmap may vary in size depending on the maximum CPU id a specific 403 * platform supports. This may be different than the number of CPUs 404 * the platform supports, since CPU ids can be sparse. We define two 405 * sets of macros; one for platforms where the maximum CPU id is less 406 * than the number of bits in a single word (32 in a 32-bit kernel, 407 * 64 in a 64-bit kernel), and one for platforms that require bitmaps 408 * of more than one word. 409 */ 410 411 #define CPUSET_WORDS BT_BITOUL(NCPU) 412 #define CPUSET_NOTINSET ((uint_t)-1) 413 414 #if CPUSET_WORDS > 1 415 416 typedef struct cpuset { 417 ulong_t cpub[CPUSET_WORDS]; 418 } cpuset_t; 419 420 /* 421 * Private functions for manipulating cpusets that do not fit in a 422 * single word. These should not be used directly; instead the 423 * CPUSET_* macros should be used so the code will be portable 424 * across different definitions of NCPU. 425 */ 426 extern void cpuset_all(cpuset_t *); 427 extern void cpuset_all_but(cpuset_t *, uint_t); 428 extern int cpuset_isnull(cpuset_t *); 429 extern int cpuset_cmp(cpuset_t *, cpuset_t *); 430 extern void cpuset_only(cpuset_t *, uint_t); 431 extern uint_t cpuset_find(cpuset_t *); 432 extern void cpuset_bounds(cpuset_t *, uint_t *, uint_t *); 433 434 #define CPUSET_ALL(set) cpuset_all(&(set)) 435 #define CPUSET_ALL_BUT(set, cpu) cpuset_all_but(&(set), cpu) 436 #define CPUSET_ONLY(set, cpu) cpuset_only(&(set), cpu) 437 #define CPU_IN_SET(set, cpu) BT_TEST((set).cpub, cpu) 438 #define CPUSET_ADD(set, cpu) BT_SET((set).cpub, cpu) 439 #define CPUSET_DEL(set, cpu) BT_CLEAR((set).cpub, cpu) 440 #define CPUSET_ISNULL(set) cpuset_isnull(&(set)) 441 #define CPUSET_ISEQUAL(set1, set2) cpuset_cmp(&(set1), &(set2)) 442 443 /* 444 * Find one CPU in the cpuset. 445 * Sets "cpu" to the id of the found CPU, or CPUSET_NOTINSET if no cpu 446 * could be found. (i.e. empty set) 447 */ 448 #define CPUSET_FIND(set, cpu) { \ 449 cpu = cpuset_find(&(set)); \ 450 } 451 452 /* 453 * Determine the smallest and largest CPU id in the set. Returns 454 * CPUSET_NOTINSET in smallest and largest when set is empty. 455 */ 456 #define CPUSET_BOUNDS(set, smallest, largest) { \ 457 cpuset_bounds(&(set), &(smallest), &(largest)); \ 458 } 459 460 /* 461 * Atomic cpuset operations 462 * These are safe to use for concurrent cpuset manipulations. 463 * "xdel" and "xadd" are exclusive operations, that set "result" to "0" 464 * if the add or del was successful, or "-1" if not successful. 465 * (e.g. attempting to add a cpu to a cpuset that's already there, or 466 * deleting a cpu that's not in the cpuset) 467 */ 468 469 #define CPUSET_ATOMIC_DEL(set, cpu) BT_ATOMIC_CLEAR((set).cpub, (cpu)) 470 #define CPUSET_ATOMIC_ADD(set, cpu) BT_ATOMIC_SET((set).cpub, (cpu)) 471 472 #define CPUSET_ATOMIC_XADD(set, cpu, result) \ 473 BT_ATOMIC_SET_EXCL((set).cpub, cpu, result) 474 475 #define CPUSET_ATOMIC_XDEL(set, cpu, result) \ 476 BT_ATOMIC_CLEAR_EXCL((set).cpub, cpu, result) 477 478 479 #define CPUSET_OR(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_XOR(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_AND(set1, set2) { \ 492 int _i; \ 493 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 494 (set1).cpub[_i] &= (set2).cpub[_i]; \ 495 } 496 497 #define CPUSET_ZERO(set) { \ 498 int _i; \ 499 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 500 (set).cpub[_i] = 0; \ 501 } 502 503 #elif CPUSET_WORDS == 1 504 505 typedef ulong_t cpuset_t; /* a set of CPUs */ 506 507 #define CPUSET(cpu) (1UL << (cpu)) 508 509 #define CPUSET_ALL(set) ((void)((set) = ~0UL)) 510 #define CPUSET_ALL_BUT(set, cpu) ((void)((set) = ~CPUSET(cpu))) 511 #define CPUSET_ONLY(set, cpu) ((void)((set) = CPUSET(cpu))) 512 #define CPU_IN_SET(set, cpu) ((set) & CPUSET(cpu)) 513 #define CPUSET_ADD(set, cpu) ((void)((set) |= CPUSET(cpu))) 514 #define CPUSET_DEL(set, cpu) ((void)((set) &= ~CPUSET(cpu))) 515 #define CPUSET_ISNULL(set) ((set) == 0) 516 #define CPUSET_ISEQUAL(set1, set2) ((set1) == (set2)) 517 #define CPUSET_OR(set1, set2) ((void)((set1) |= (set2))) 518 #define CPUSET_XOR(set1, set2) ((void)((set1) ^= (set2))) 519 #define CPUSET_AND(set1, set2) ((void)((set1) &= (set2))) 520 #define CPUSET_ZERO(set) ((void)((set) = 0)) 521 522 #define CPUSET_FIND(set, cpu) { \ 523 cpu = (uint_t)(lowbit(set) - 1); \ 524 } 525 526 #define CPUSET_BOUNDS(set, smallest, largest) { \ 527 smallest = (uint_t)(lowbit(set) - 1); \ 528 largest = (uint_t)(highbit(set) - 1); \ 529 } 530 531 #define CPUSET_ATOMIC_DEL(set, cpu) atomic_and_ulong(&(set), ~CPUSET(cpu)) 532 #define CPUSET_ATOMIC_ADD(set, cpu) atomic_or_ulong(&(set), CPUSET(cpu)) 533 534 #define CPUSET_ATOMIC_XADD(set, cpu, result) \ 535 { result = atomic_set_long_excl(&(set), (cpu)); } 536 537 #define CPUSET_ATOMIC_XDEL(set, cpu, result) \ 538 { result = atomic_clear_long_excl(&(set), (cpu)); } 539 540 #else /* CPUSET_WORDS <= 0 */ 541 542 #error NCPU is undefined or invalid 543 544 #endif /* CPUSET_WORDS */ 545 546 extern cpuset_t cpu_seqid_inuse; 547 548 #endif /* (_KERNEL || _KMEMUSER) && _MACHDEP */ 549 550 #define CPU_CPR_OFFLINE 0x0 551 #define CPU_CPR_ONLINE 0x1 552 #define CPU_CPR_IS_OFFLINE(cpu) (((cpu)->cpu_cpr_flags & CPU_CPR_ONLINE) == 0) 553 #define CPU_CPR_IS_ONLINE(cpu) ((cpu)->cpu_cpr_flags & CPU_CPR_ONLINE) 554 #define CPU_SET_CPR_FLAGS(cpu, flag) ((cpu)->cpu_cpr_flags |= flag) 555 556 #if defined(_KERNEL) || defined(_KMEMUSER) 557 558 extern struct cpu *cpu[]; /* indexed by CPU number */ 559 extern struct cpu **cpu_seq; /* indexed by sequential CPU id */ 560 extern cpu_t *cpu_list; /* list of CPUs */ 561 extern cpu_t *cpu_active; /* list of active CPUs */ 562 extern int ncpus; /* number of CPUs present */ 563 extern int ncpus_online; /* number of CPUs not quiesced */ 564 extern int max_ncpus; /* max present before ncpus is known */ 565 extern int boot_max_ncpus; /* like max_ncpus but for real */ 566 extern int boot_ncpus; /* # cpus present @ boot */ 567 extern processorid_t max_cpuid; /* maximum CPU number */ 568 extern struct cpu *cpu_inmotion; /* offline or partition move target */ 569 extern cpu_t *clock_cpu_list; 570 extern processorid_t max_cpu_seqid_ever; /* maximum seqid ever given */ 571 572 #if defined(__i386) || defined(__amd64) 573 extern struct cpu *curcpup(void); 574 #define CPU (curcpup()) /* Pointer to current CPU */ 575 #else 576 #define CPU (curthread->t_cpu) /* Pointer to current CPU */ 577 #endif 578 579 /* 580 * CPU_CURRENT indicates to thread_affinity_set to use CPU->cpu_id 581 * as the target and to grab cpu_lock instead of requiring the caller 582 * to grab it. 583 */ 584 #define CPU_CURRENT -3 585 586 /* 587 * Per-CPU statistics 588 * 589 * cpu_stats_t contains numerous system and VM-related statistics, in the form 590 * of gauges or monotonically-increasing event occurrence counts. 591 */ 592 593 #define CPU_STATS_ENTER_K() kpreempt_disable() 594 #define CPU_STATS_EXIT_K() kpreempt_enable() 595 596 #define CPU_STATS_ADD_K(class, stat, amount) \ 597 { kpreempt_disable(); /* keep from switching CPUs */\ 598 CPU_STATS_ADDQ(CPU, class, stat, amount); \ 599 kpreempt_enable(); \ 600 } 601 602 #define CPU_STATS_ADDQ(cp, class, stat, amount) { \ 603 extern void __dtrace_probe___cpu_##class##info_##stat(uint_t, \ 604 uint64_t *, cpu_t *); \ 605 uint64_t *stataddr = &((cp)->cpu_stats.class.stat); \ 606 __dtrace_probe___cpu_##class##info_##stat((amount), \ 607 stataddr, cp); \ 608 *(stataddr) += (amount); \ 609 } 610 611 #define CPU_STATS(cp, stat) \ 612 ((cp)->cpu_stats.stat) 613 614 /* 615 * Increment CPU generation value. 616 * This macro should be called whenever CPU goes on-line or off-line. 617 * Updates to cpu_generation should be protected by cpu_lock. 618 */ 619 #define CPU_NEW_GENERATION(cp) ((cp)->cpu_generation++) 620 621 #endif /* _KERNEL || _KMEMUSER */ 622 623 /* 624 * CPU support routines. 625 */ 626 #if defined(_KERNEL) && defined(__STDC__) /* not for genassym.c */ 627 628 struct zone; 629 630 void cpu_list_init(cpu_t *); 631 void cpu_add_unit(cpu_t *); 632 void cpu_del_unit(int cpuid); 633 void cpu_add_active(cpu_t *); 634 void cpu_kstat_init(cpu_t *); 635 void cpu_visibility_add(cpu_t *, struct zone *); 636 void cpu_visibility_remove(cpu_t *, struct zone *); 637 void cpu_visibility_configure(cpu_t *, struct zone *); 638 void cpu_visibility_unconfigure(cpu_t *, struct zone *); 639 void cpu_visibility_online(cpu_t *, struct zone *); 640 void cpu_visibility_offline(cpu_t *, struct zone *); 641 void cpu_create_intrstat(cpu_t *); 642 void cpu_delete_intrstat(cpu_t *); 643 int cpu_kstat_intrstat_update(kstat_t *, int); 644 void cpu_intr_swtch_enter(kthread_t *); 645 void cpu_intr_swtch_exit(kthread_t *); 646 647 void mbox_lock_init(void); /* initialize cross-call locks */ 648 void mbox_init(int cpun); /* initialize cross-calls */ 649 void poke_cpu(int cpun); /* interrupt another CPU (to preempt) */ 650 651 /* 652 * values for safe_list. Pause state that CPUs are in. 653 */ 654 #define PAUSE_IDLE 0 /* normal state */ 655 #define PAUSE_READY 1 /* paused thread ready to spl */ 656 #define PAUSE_WAIT 2 /* paused thread is spl-ed high */ 657 #define PAUSE_DIE 3 /* tell pause thread to leave */ 658 #define PAUSE_DEAD 4 /* pause thread has left */ 659 660 void mach_cpu_pause(volatile char *); 661 662 void pause_cpus(cpu_t *off_cp); 663 void start_cpus(void); 664 int cpus_paused(void); 665 666 void cpu_pause_init(void); 667 cpu_t *cpu_get(processorid_t cpun); /* get the CPU struct associated */ 668 669 int cpu_online(cpu_t *cp); /* take cpu online */ 670 int cpu_offline(cpu_t *cp, int flags); /* take cpu offline */ 671 int cpu_spare(cpu_t *cp, int flags); /* take cpu to spare */ 672 int cpu_faulted(cpu_t *cp, int flags); /* take cpu to faulted */ 673 int cpu_poweron(cpu_t *cp); /* take powered-off cpu to offline */ 674 int cpu_poweroff(cpu_t *cp); /* take offline cpu to powered-off */ 675 676 cpu_t *cpu_intr_next(cpu_t *cp); /* get next online CPU taking intrs */ 677 int cpu_intr_count(cpu_t *cp); /* count # of CPUs handling intrs */ 678 int cpu_intr_on(cpu_t *cp); /* CPU taking I/O interrupts? */ 679 void cpu_intr_enable(cpu_t *cp); /* enable I/O interrupts */ 680 int cpu_intr_disable(cpu_t *cp); /* disable I/O interrupts */ 681 void cpu_intr_alloc(cpu_t *cp, int n); /* allocate interrupt threads */ 682 683 /* 684 * Routines for checking CPU states. 685 */ 686 int cpu_is_online(cpu_t *); /* check if CPU is online */ 687 int cpu_is_nointr(cpu_t *); /* check if CPU can service intrs */ 688 int cpu_is_active(cpu_t *); /* check if CPU can run threads */ 689 int cpu_is_offline(cpu_t *); /* check if CPU is offline */ 690 int cpu_is_poweredoff(cpu_t *); /* check if CPU is powered off */ 691 692 int cpu_flagged_online(cpu_flag_t); /* flags show CPU is online */ 693 int cpu_flagged_nointr(cpu_flag_t); /* flags show CPU not handling intrs */ 694 int cpu_flagged_active(cpu_flag_t); /* flags show CPU scheduling threads */ 695 int cpu_flagged_offline(cpu_flag_t); /* flags show CPU is offline */ 696 int cpu_flagged_poweredoff(cpu_flag_t); /* flags show CPU is powered off */ 697 698 /* 699 * The processor_info(2) state of a CPU is a simplified representation suitable 700 * for use by an application program. Kernel subsystems should utilize the 701 * internal per-CPU state as given by the cpu_flags member of the cpu structure, 702 * as this information may include platform- or architecture-specific state 703 * critical to a subsystem's disposition of a particular CPU. 704 */ 705 void cpu_set_state(cpu_t *); /* record/timestamp current state */ 706 int cpu_get_state(cpu_t *); /* get current cpu state */ 707 const char *cpu_get_state_str(cpu_t *); /* get current cpu state as string */ 708 709 710 void cpu_set_curr_clock(uint64_t); /* indicate the current CPU's freq */ 711 void cpu_set_supp_freqs(cpu_t *, const char *); /* set the CPU supported */ 712 /* frequencies */ 713 714 int cpu_configure(int); 715 int cpu_unconfigure(int); 716 void cpu_destroy_bound_threads(cpu_t *cp); 717 718 extern int cpu_bind_thread(kthread_t *tp, processorid_t bind, 719 processorid_t *obind, int *error); 720 extern int cpu_unbind(processorid_t cpu_id, boolean_t force); 721 extern void thread_affinity_set(kthread_t *t, int cpu_id); 722 extern void thread_affinity_clear(kthread_t *t); 723 extern void affinity_set(int cpu_id); 724 extern void affinity_clear(void); 725 extern void init_cpu_mstate(struct cpu *, int); 726 extern void term_cpu_mstate(struct cpu *); 727 extern void new_cpu_mstate(int, hrtime_t); 728 extern void get_cpu_mstate(struct cpu *, hrtime_t *); 729 extern void thread_nomigrate(void); 730 extern void thread_allowmigrate(void); 731 extern void weakbinding_stop(void); 732 extern void weakbinding_start(void); 733 734 /* 735 * The following routines affect the CPUs participation in interrupt processing, 736 * if that is applicable on the architecture. This only affects interrupts 737 * which aren't directed at the processor (not cross calls). 738 * 739 * cpu_disable_intr returns non-zero if interrupts were previously enabled. 740 */ 741 int cpu_disable_intr(struct cpu *cp); /* stop issuing interrupts to cpu */ 742 void cpu_enable_intr(struct cpu *cp); /* start issuing interrupts to cpu */ 743 744 /* 745 * The mutex cpu_lock protects cpu_flags for all CPUs, as well as the ncpus 746 * and ncpus_online counts. 747 */ 748 extern kmutex_t cpu_lock; /* lock protecting CPU data */ 749 750 /* 751 * CPU state change events 752 * 753 * Various subsystems need to know when CPUs change their state. They get this 754 * information by registering CPU state change callbacks using 755 * register_cpu_setup_func(). Whenever any CPU changes its state, the callback 756 * function is called. The callback function is passed three arguments: 757 * 758 * Event, described by cpu_setup_t 759 * CPU ID 760 * Transparent pointer passed when registering the callback 761 * 762 * The callback function is called with cpu_lock held. The return value from the 763 * callback function is usually ignored, except for CPU_CONFIG and CPU_UNCONFIG 764 * events. For these two events, non-zero return value indicates a failure and 765 * prevents successful completion of the operation. 766 * 767 * New events may be added in the future. Callback functions should ignore any 768 * events that they do not understand. 769 * 770 * The following events provide notification callbacks: 771 * 772 * CPU_INIT A new CPU is started and added to the list of active CPUs 773 * This event is only used during boot 774 * 775 * CPU_CONFIG A newly inserted CPU is prepared for starting running code 776 * This event is called by DR code 777 * 778 * CPU_UNCONFIG CPU has been powered off and needs cleanup 779 * This event is called by DR code 780 * 781 * CPU_ON CPU is enabled but does not run anything yet 782 * 783 * CPU_INTR_ON CPU is enabled and has interrupts enabled 784 * 785 * CPU_OFF CPU is going offline but can still run threads 786 * 787 * CPU_CPUPART_OUT CPU is going to move out of its partition 788 * 789 * CPU_CPUPART_IN CPU is going to move to a new partition 790 * 791 * CPU_SETUP CPU is set up during boot and can run threads 792 */ 793 typedef enum { 794 CPU_INIT, 795 CPU_CONFIG, 796 CPU_UNCONFIG, 797 CPU_ON, 798 CPU_OFF, 799 CPU_CPUPART_IN, 800 CPU_CPUPART_OUT, 801 CPU_SETUP, 802 CPU_INTR_ON 803 } cpu_setup_t; 804 805 typedef int cpu_setup_func_t(cpu_setup_t, int, void *); 806 807 /* 808 * Routines used to register interest in cpu's being added to or removed 809 * from the system. 810 */ 811 extern void register_cpu_setup_func(cpu_setup_func_t *, void *); 812 extern void unregister_cpu_setup_func(cpu_setup_func_t *, void *); 813 extern void cpu_state_change_notify(int, cpu_setup_t); 814 815 /* 816 * Call specified function on the given CPU 817 */ 818 typedef void (*cpu_call_func_t)(uintptr_t, uintptr_t); 819 extern void cpu_call(cpu_t *, cpu_call_func_t, uintptr_t, uintptr_t); 820 821 822 /* 823 * Create various strings that describe the given CPU for the 824 * processor_info system call and configuration-related kstats. 825 */ 826 #define CPU_IDSTRLEN 100 827 828 extern void init_cpu_info(struct cpu *); 829 extern void populate_idstr(struct cpu *); 830 extern void cpu_vm_data_init(struct cpu *); 831 extern void cpu_vm_data_destroy(struct cpu *); 832 833 #endif /* _KERNEL */ 834 835 #ifdef __cplusplus 836 } 837 #endif 838 839 #endif /* _SYS_CPUVAR_H */ 840