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 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _SYS_CPUVAR_H 28 #define _SYS_CPUVAR_H 29 30 #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_lbolt; /* 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 volatile uint16_t cpu_mstate; /* cpu microstate */ 192 volatile uint16_t cpu_mstate_gen; /* generation counter */ 193 volatile hrtime_t cpu_mstate_start; /* cpu microstate start time */ 194 volatile hrtime_t cpu_acct[NCMSTATES]; /* cpu microstate data */ 195 hrtime_t cpu_intracct[NCMSTATES]; /* interrupt mstate data */ 196 hrtime_t cpu_waitrq; /* cpu run-queue wait time */ 197 struct loadavg_s cpu_loadavg; /* loadavg info for this cpu */ 198 199 char *cpu_idstr; /* for printing and debugging */ 200 char *cpu_brandstr; /* for printing */ 201 202 /* 203 * Sum of all device interrupt weights that are currently directed at 204 * this cpu. Cleared at start of interrupt redistribution. 205 */ 206 int32_t cpu_intr_weight; 207 void *cpu_vm_data; 208 209 struct cpu_physid *cpu_physid; /* physical associations */ 210 211 uint64_t cpu_curr_clock; /* current clock freq in Hz */ 212 char *cpu_supp_freqs; /* supported freqs in Hz */ 213 214 /* 215 * Interrupt load factor used by dispatcher & softcall 216 */ 217 hrtime_t cpu_intrlast; /* total interrupt time (nsec) */ 218 int cpu_intrload; /* interrupt load factor (0-99%) */ 219 220 /* 221 * New members must be added /before/ this member, as the CTF tools 222 * rely on this being the last field before cpu_m, so they can 223 * correctly calculate the offset when synthetically adding the cpu_m 224 * member in objects that do not have it. This fixup is required for 225 * uniquification to work correctly. 226 */ 227 uintptr_t cpu_m_pad; 228 229 #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP) 230 struct machcpu cpu_m; /* per architecture info */ 231 #endif 232 } cpu_t; 233 234 /* 235 * The cpu_core structure consists of per-CPU state available in any context. 236 * On some architectures, this may mean that the page(s) containing the 237 * NCPU-sized array of cpu_core structures must be locked in the TLB -- it 238 * is up to the platform to assure that this is performed properly. Note that 239 * the structure is sized to avoid false sharing. 240 */ 241 #define CPUC_SIZE (sizeof (uint16_t) + sizeof (uintptr_t) + \ 242 sizeof (kmutex_t)) 243 #define CPUC_PADSIZE CPU_CACHE_COHERENCE_SIZE - CPUC_SIZE 244 245 typedef struct cpu_core { 246 uint16_t cpuc_dtrace_flags; /* DTrace flags */ 247 uint8_t cpuc_pad[CPUC_PADSIZE]; /* padding */ 248 uintptr_t cpuc_dtrace_illval; /* DTrace illegal value */ 249 kmutex_t cpuc_pid_lock; /* DTrace pid provider lock */ 250 } cpu_core_t; 251 252 #ifdef _KERNEL 253 extern cpu_core_t cpu_core[]; 254 #endif /* _KERNEL */ 255 256 /* 257 * CPU_ON_INTR() macro. Returns non-zero if currently on interrupt stack. 258 * Note that this isn't a test for a high PIL. For example, cpu_intr_actv 259 * does not get updated when we go through sys_trap from TL>0 at high PIL. 260 * getpil() should be used instead to check for PIL levels. 261 */ 262 #define CPU_ON_INTR(cpup) ((cpup)->cpu_intr_actv >> (LOCK_LEVEL + 1)) 263 264 #if defined(_KERNEL) || defined(_KMEMUSER) 265 266 #define INTR_STACK_SIZE MAX(DEFAULTSTKSZ, PAGESIZE) 267 268 /* MEMBERS PROTECTED BY "atomicity": cpu_flags */ 269 270 /* 271 * Flags in the CPU structure. 272 * 273 * These are protected by cpu_lock (except during creation). 274 * 275 * Offlined-CPUs have three stages of being offline: 276 * 277 * CPU_ENABLE indicates that the CPU is participating in I/O interrupts 278 * that can be directed at a number of different CPUs. If CPU_ENABLE 279 * is off, the CPU will not be given interrupts that can be sent elsewhere, 280 * but will still get interrupts from devices associated with that CPU only, 281 * and from other CPUs. 282 * 283 * CPU_OFFLINE indicates that the dispatcher should not allow any threads 284 * other than interrupt threads to run on that CPU. A CPU will not have 285 * CPU_OFFLINE set if there are any bound threads (besides interrupts). 286 * 287 * CPU_QUIESCED is set if p_offline was able to completely turn idle the 288 * CPU and it will not have to run interrupt threads. In this case it'll 289 * stay in the idle loop until CPU_QUIESCED is turned off. 290 * 291 * CPU_FROZEN is used only by CPR to mark CPUs that have been successfully 292 * suspended (in the suspend path), or have yet to be resumed (in the resume 293 * case). 294 * 295 * On some platforms CPUs can be individually powered off. 296 * The following flags are set for powered off CPUs: CPU_QUIESCED, 297 * CPU_OFFLINE, and CPU_POWEROFF. The following flags are cleared: 298 * CPU_RUNNING, CPU_READY, CPU_EXISTS, and CPU_ENABLE. 299 */ 300 #define CPU_RUNNING 0x001 /* CPU running */ 301 #define CPU_READY 0x002 /* CPU ready for cross-calls */ 302 #define CPU_QUIESCED 0x004 /* CPU will stay in idle */ 303 #define CPU_EXISTS 0x008 /* CPU is configured */ 304 #define CPU_ENABLE 0x010 /* CPU enabled for interrupts */ 305 #define CPU_OFFLINE 0x020 /* CPU offline via p_online */ 306 #define CPU_POWEROFF 0x040 /* CPU is powered off */ 307 #define CPU_FROZEN 0x080 /* CPU is frozen via CPR suspend */ 308 #define CPU_SPARE 0x100 /* CPU offline available for use */ 309 #define CPU_FAULTED 0x200 /* CPU offline diagnosed faulty */ 310 311 #define FMT_CPU_FLAGS \ 312 "\20\12fault\11spare\10frozen" \ 313 "\7poweroff\6offline\5enable\4exist\3quiesced\2ready\1run" 314 315 #define CPU_ACTIVE(cpu) (((cpu)->cpu_flags & CPU_OFFLINE) == 0) 316 317 /* 318 * Flags for cpu_offline(), cpu_faulted(), and cpu_spare(). 319 */ 320 #define CPU_FORCED 0x0001 /* Force CPU offline */ 321 322 /* 323 * DTrace flags. 324 */ 325 #define CPU_DTRACE_NOFAULT 0x0001 /* Don't fault */ 326 #define CPU_DTRACE_DROP 0x0002 /* Drop this ECB */ 327 #define CPU_DTRACE_BADADDR 0x0004 /* DTrace fault: bad address */ 328 #define CPU_DTRACE_BADALIGN 0x0008 /* DTrace fault: bad alignment */ 329 #define CPU_DTRACE_DIVZERO 0x0010 /* DTrace fault: divide by zero */ 330 #define CPU_DTRACE_ILLOP 0x0020 /* DTrace fault: illegal operation */ 331 #define CPU_DTRACE_NOSCRATCH 0x0040 /* DTrace fault: out of scratch */ 332 #define CPU_DTRACE_KPRIV 0x0080 /* DTrace fault: bad kernel access */ 333 #define CPU_DTRACE_UPRIV 0x0100 /* DTrace fault: bad user access */ 334 #define CPU_DTRACE_TUPOFLOW 0x0200 /* DTrace fault: tuple stack overflow */ 335 #if defined(__sparc) 336 #define CPU_DTRACE_FAKERESTORE 0x0400 /* pid provider hint to getreg */ 337 #endif 338 #define CPU_DTRACE_ENTRY 0x0800 /* pid provider hint to ustack() */ 339 #define CPU_DTRACE_BADSTACK 0x1000 /* DTrace fault: bad stack */ 340 341 #define CPU_DTRACE_FAULT (CPU_DTRACE_BADADDR | CPU_DTRACE_BADALIGN | \ 342 CPU_DTRACE_DIVZERO | CPU_DTRACE_ILLOP | \ 343 CPU_DTRACE_NOSCRATCH | CPU_DTRACE_KPRIV | \ 344 CPU_DTRACE_UPRIV | CPU_DTRACE_TUPOFLOW | \ 345 CPU_DTRACE_BADSTACK) 346 #define CPU_DTRACE_ERROR (CPU_DTRACE_FAULT | CPU_DTRACE_DROP) 347 348 /* 349 * Dispatcher flags 350 * These flags must be changed only by the current CPU. 351 */ 352 #define CPU_DISP_DONTSTEAL 0x01 /* CPU undergoing context swtch */ 353 #define CPU_DISP_HALTED 0x02 /* CPU halted waiting for interrupt */ 354 355 356 #endif /* _KERNEL || _KMEMUSER */ 357 358 #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP) 359 360 /* 361 * Macros for manipulating sets of CPUs as a bitmap. Note that this 362 * bitmap may vary in size depending on the maximum CPU id a specific 363 * platform supports. This may be different than the number of CPUs 364 * the platform supports, since CPU ids can be sparse. We define two 365 * sets of macros; one for platforms where the maximum CPU id is less 366 * than the number of bits in a single word (32 in a 32-bit kernel, 367 * 64 in a 64-bit kernel), and one for platforms that require bitmaps 368 * of more than one word. 369 */ 370 371 #define CPUSET_WORDS BT_BITOUL(NCPU) 372 #define CPUSET_NOTINSET ((uint_t)-1) 373 374 #if CPUSET_WORDS > 1 375 376 typedef struct cpuset { 377 ulong_t cpub[CPUSET_WORDS]; 378 } cpuset_t; 379 380 /* 381 * Private functions for manipulating cpusets that do not fit in a 382 * single word. These should not be used directly; instead the 383 * CPUSET_* macros should be used so the code will be portable 384 * across different definitions of NCPU. 385 */ 386 extern void cpuset_all(cpuset_t *); 387 extern void cpuset_all_but(cpuset_t *, uint_t); 388 extern int cpuset_isnull(cpuset_t *); 389 extern int cpuset_cmp(cpuset_t *, cpuset_t *); 390 extern void cpuset_only(cpuset_t *, uint_t); 391 extern uint_t cpuset_find(cpuset_t *); 392 extern void cpuset_bounds(cpuset_t *, uint_t *, uint_t *); 393 394 #define CPUSET_ALL(set) cpuset_all(&(set)) 395 #define CPUSET_ALL_BUT(set, cpu) cpuset_all_but(&(set), cpu) 396 #define CPUSET_ONLY(set, cpu) cpuset_only(&(set), cpu) 397 #define CPU_IN_SET(set, cpu) BT_TEST((set).cpub, cpu) 398 #define CPUSET_ADD(set, cpu) BT_SET((set).cpub, cpu) 399 #define CPUSET_DEL(set, cpu) BT_CLEAR((set).cpub, cpu) 400 #define CPUSET_ISNULL(set) cpuset_isnull(&(set)) 401 #define CPUSET_ISEQUAL(set1, set2) cpuset_cmp(&(set1), &(set2)) 402 403 /* 404 * Find one CPU in the cpuset. 405 * Sets "cpu" to the id of the found CPU, or CPUSET_NOTINSET if no cpu 406 * could be found. (i.e. empty set) 407 */ 408 #define CPUSET_FIND(set, cpu) { \ 409 cpu = cpuset_find(&(set)); \ 410 } 411 412 /* 413 * Determine the smallest and largest CPU id in the set. Returns 414 * CPUSET_NOTINSET in smallest and largest when set is empty. 415 */ 416 #define CPUSET_BOUNDS(set, smallest, largest) { \ 417 cpuset_bounds(&(set), &(smallest), &(largest)); \ 418 } 419 420 /* 421 * Atomic cpuset operations 422 * These are safe to use for concurrent cpuset manipulations. 423 * "xdel" and "xadd" are exclusive operations, that set "result" to "0" 424 * if the add or del was successful, or "-1" if not successful. 425 * (e.g. attempting to add a cpu to a cpuset that's already there, or 426 * deleting a cpu that's not in the cpuset) 427 */ 428 429 #define CPUSET_ATOMIC_DEL(set, cpu) BT_ATOMIC_CLEAR((set).cpub, (cpu)) 430 #define CPUSET_ATOMIC_ADD(set, cpu) BT_ATOMIC_SET((set).cpub, (cpu)) 431 432 #define CPUSET_ATOMIC_XADD(set, cpu, result) \ 433 BT_ATOMIC_SET_EXCL((set).cpub, cpu, result) 434 435 #define CPUSET_ATOMIC_XDEL(set, cpu, result) \ 436 BT_ATOMIC_CLEAR_EXCL((set).cpub, cpu, result) 437 438 439 #define CPUSET_OR(set1, set2) { \ 440 int _i; \ 441 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 442 (set1).cpub[_i] |= (set2).cpub[_i]; \ 443 } 444 445 #define CPUSET_XOR(set1, set2) { \ 446 int _i; \ 447 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 448 (set1).cpub[_i] ^= (set2).cpub[_i]; \ 449 } 450 451 #define CPUSET_AND(set1, set2) { \ 452 int _i; \ 453 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 454 (set1).cpub[_i] &= (set2).cpub[_i]; \ 455 } 456 457 #define CPUSET_ZERO(set) { \ 458 int _i; \ 459 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 460 (set).cpub[_i] = 0; \ 461 } 462 463 #elif CPUSET_WORDS == 1 464 465 typedef ulong_t cpuset_t; /* a set of CPUs */ 466 467 #define CPUSET(cpu) (1UL << (cpu)) 468 469 #define CPUSET_ALL(set) ((void)((set) = ~0UL)) 470 #define CPUSET_ALL_BUT(set, cpu) ((void)((set) = ~CPUSET(cpu))) 471 #define CPUSET_ONLY(set, cpu) ((void)((set) = CPUSET(cpu))) 472 #define CPU_IN_SET(set, cpu) ((set) & CPUSET(cpu)) 473 #define CPUSET_ADD(set, cpu) ((void)((set) |= CPUSET(cpu))) 474 #define CPUSET_DEL(set, cpu) ((void)((set) &= ~CPUSET(cpu))) 475 #define CPUSET_ISNULL(set) ((set) == 0) 476 #define CPUSET_ISEQUAL(set1, set2) ((set1) == (set2)) 477 #define CPUSET_OR(set1, set2) ((void)((set1) |= (set2))) 478 #define CPUSET_XOR(set1, set2) ((void)((set1) ^= (set2))) 479 #define CPUSET_AND(set1, set2) ((void)((set1) &= (set2))) 480 #define CPUSET_ZERO(set) ((void)((set) = 0)) 481 482 #define CPUSET_FIND(set, cpu) { \ 483 cpu = (uint_t)(lowbit(set) - 1); \ 484 } 485 486 #define CPUSET_BOUNDS(set, smallest, largest) { \ 487 smallest = (uint_t)(lowbit(set) - 1); \ 488 largest = (uint_t)(highbit(set) - 1); \ 489 } 490 491 #define CPUSET_ATOMIC_DEL(set, cpu) atomic_and_long(&(set), ~CPUSET(cpu)) 492 #define CPUSET_ATOMIC_ADD(set, cpu) atomic_or_long(&(set), CPUSET(cpu)) 493 494 #define CPUSET_ATOMIC_XADD(set, cpu, result) \ 495 { result = atomic_set_long_excl(&(set), (cpu)); } 496 497 #define CPUSET_ATOMIC_XDEL(set, cpu, result) \ 498 { result = atomic_clear_long_excl(&(set), (cpu)); } 499 500 #else /* CPUSET_WORDS <= 0 */ 501 502 #error NCPU is undefined or invalid 503 504 #endif /* CPUSET_WORDS */ 505 506 extern cpuset_t cpu_seqid_inuse; 507 508 #endif /* (_KERNEL || _KMEMUSER) && _MACHDEP */ 509 510 #define CPU_CPR_OFFLINE 0x0 511 #define CPU_CPR_ONLINE 0x1 512 #define CPU_CPR_IS_OFFLINE(cpu) (((cpu)->cpu_cpr_flags & CPU_CPR_ONLINE) == 0) 513 #define CPU_CPR_IS_ONLINE(cpu) ((cpu)->cpu_cpr_flags & CPU_CPR_ONLINE) 514 #define CPU_SET_CPR_FLAGS(cpu, flag) ((cpu)->cpu_cpr_flags |= flag) 515 516 #if defined(_KERNEL) || defined(_KMEMUSER) 517 518 extern struct cpu *cpu[]; /* indexed by CPU number */ 519 extern cpu_t *cpu_list; /* list of CPUs */ 520 extern cpu_t *cpu_active; /* list of active CPUs */ 521 extern int ncpus; /* number of CPUs present */ 522 extern int ncpus_online; /* number of CPUs not quiesced */ 523 extern int max_ncpus; /* max present before ncpus is known */ 524 extern int boot_max_ncpus; /* like max_ncpus but for real */ 525 extern int boot_ncpus; /* # cpus present @ boot */ 526 extern processorid_t max_cpuid; /* maximum CPU number */ 527 extern struct cpu *cpu_inmotion; /* offline or partition move target */ 528 extern cpu_t *clock_cpu_list; 529 530 #if defined(__i386) || defined(__amd64) 531 extern struct cpu *curcpup(void); 532 #define CPU (curcpup()) /* Pointer to current CPU */ 533 #else 534 #define CPU (curthread->t_cpu) /* Pointer to current CPU */ 535 #endif 536 537 /* 538 * CPU_CURRENT indicates to thread_affinity_set to use CPU->cpu_id 539 * as the target and to grab cpu_lock instead of requiring the caller 540 * to grab it. 541 */ 542 #define CPU_CURRENT -3 543 544 /* 545 * Per-CPU statistics 546 * 547 * cpu_stats_t contains numerous system and VM-related statistics, in the form 548 * of gauges or monotonically-increasing event occurrence counts. 549 */ 550 551 #define CPU_STATS_ENTER_K() kpreempt_disable() 552 #define CPU_STATS_EXIT_K() kpreempt_enable() 553 554 #define CPU_STATS_ADD_K(class, stat, amount) \ 555 { kpreempt_disable(); /* keep from switching CPUs */\ 556 CPU_STATS_ADDQ(CPU, class, stat, amount); \ 557 kpreempt_enable(); \ 558 } 559 560 #define CPU_STATS_ADDQ(cp, class, stat, amount) { \ 561 extern void __dtrace_probe___cpu_##class##info_##stat(uint_t, \ 562 uint64_t *, cpu_t *); \ 563 uint64_t *stataddr = &((cp)->cpu_stats.class.stat); \ 564 __dtrace_probe___cpu_##class##info_##stat((amount), \ 565 stataddr, cp); \ 566 *(stataddr) += (amount); \ 567 } 568 569 #define CPU_STATS(cp, stat) \ 570 ((cp)->cpu_stats.stat) 571 572 #endif /* _KERNEL || _KMEMUSER */ 573 574 /* 575 * CPU support routines. 576 */ 577 #if defined(_KERNEL) && defined(__STDC__) /* not for genassym.c */ 578 579 struct zone; 580 581 void cpu_list_init(cpu_t *); 582 void cpu_add_unit(cpu_t *); 583 void cpu_del_unit(int cpuid); 584 void cpu_add_active(cpu_t *); 585 void cpu_kstat_init(cpu_t *); 586 void cpu_visibility_add(cpu_t *, struct zone *); 587 void cpu_visibility_remove(cpu_t *, struct zone *); 588 void cpu_visibility_configure(cpu_t *, struct zone *); 589 void cpu_visibility_unconfigure(cpu_t *, struct zone *); 590 void cpu_visibility_online(cpu_t *, struct zone *); 591 void cpu_visibility_offline(cpu_t *, struct zone *); 592 void cpu_create_intrstat(cpu_t *); 593 void cpu_delete_intrstat(cpu_t *); 594 int cpu_kstat_intrstat_update(kstat_t *, int); 595 void cpu_intr_swtch_enter(kthread_t *); 596 void cpu_intr_swtch_exit(kthread_t *); 597 598 void mbox_lock_init(void); /* initialize cross-call locks */ 599 void mbox_init(int cpun); /* initialize cross-calls */ 600 void poke_cpu(int cpun); /* interrupt another CPU (to preempt) */ 601 602 /* 603 * values for safe_list. Pause state that CPUs are in. 604 */ 605 #define PAUSE_IDLE 0 /* normal state */ 606 #define PAUSE_READY 1 /* paused thread ready to spl */ 607 #define PAUSE_WAIT 2 /* paused thread is spl-ed high */ 608 #define PAUSE_DIE 3 /* tell pause thread to leave */ 609 #define PAUSE_DEAD 4 /* pause thread has left */ 610 611 void mach_cpu_pause(volatile char *); 612 613 void pause_cpus(cpu_t *off_cp); 614 void start_cpus(void); 615 int cpus_paused(void); 616 617 void cpu_pause_init(void); 618 cpu_t *cpu_get(processorid_t cpun); /* get the CPU struct associated */ 619 620 int cpu_online(cpu_t *cp); /* take cpu online */ 621 int cpu_offline(cpu_t *cp, int flags); /* take cpu offline */ 622 int cpu_spare(cpu_t *cp, int flags); /* take cpu to spare */ 623 int cpu_faulted(cpu_t *cp, int flags); /* take cpu to faulted */ 624 int cpu_poweron(cpu_t *cp); /* take powered-off cpu to offline */ 625 int cpu_poweroff(cpu_t *cp); /* take offline cpu to powered-off */ 626 627 cpu_t *cpu_intr_next(cpu_t *cp); /* get next online CPU taking intrs */ 628 int cpu_intr_count(cpu_t *cp); /* count # of CPUs handling intrs */ 629 int cpu_intr_on(cpu_t *cp); /* CPU taking I/O interrupts? */ 630 void cpu_intr_enable(cpu_t *cp); /* enable I/O interrupts */ 631 int cpu_intr_disable(cpu_t *cp); /* disable I/O interrupts */ 632 void cpu_intr_alloc(cpu_t *cp, int n); /* allocate interrupt threads */ 633 634 /* 635 * Routines for checking CPU states. 636 */ 637 int cpu_is_online(cpu_t *); /* check if CPU is online */ 638 int cpu_is_nointr(cpu_t *); /* check if CPU can service intrs */ 639 int cpu_is_active(cpu_t *); /* check if CPU can run threads */ 640 int cpu_is_offline(cpu_t *); /* check if CPU is offline */ 641 int cpu_is_poweredoff(cpu_t *); /* check if CPU is powered off */ 642 643 int cpu_flagged_online(cpu_flag_t); /* flags show CPU is online */ 644 int cpu_flagged_nointr(cpu_flag_t); /* flags show CPU not handling intrs */ 645 int cpu_flagged_active(cpu_flag_t); /* flags show CPU scheduling threads */ 646 int cpu_flagged_offline(cpu_flag_t); /* flags show CPU is offline */ 647 int cpu_flagged_poweredoff(cpu_flag_t); /* flags show CPU is powered off */ 648 649 /* 650 * The processor_info(2) state of a CPU is a simplified representation suitable 651 * for use by an application program. Kernel subsystems should utilize the 652 * internal per-CPU state as given by the cpu_flags member of the cpu structure, 653 * as this information may include platform- or architecture-specific state 654 * critical to a subsystem's disposition of a particular CPU. 655 */ 656 void cpu_set_state(cpu_t *); /* record/timestamp current state */ 657 int cpu_get_state(cpu_t *); /* get current cpu state */ 658 const char *cpu_get_state_str(cpu_t *); /* get current cpu state as string */ 659 660 661 void cpu_set_supp_freqs(cpu_t *, const char *); /* set the CPU supported */ 662 /* frequencies */ 663 664 int cpu_configure(int); 665 int cpu_unconfigure(int); 666 void cpu_destroy_bound_threads(cpu_t *cp); 667 668 extern int cpu_bind_thread(kthread_t *tp, processorid_t bind, 669 processorid_t *obind, int *error); 670 extern int cpu_unbind(processorid_t cpu_id, boolean_t force); 671 extern void thread_affinity_set(kthread_t *t, int cpu_id); 672 extern void thread_affinity_clear(kthread_t *t); 673 extern void affinity_set(int cpu_id); 674 extern void affinity_clear(void); 675 extern void init_cpu_mstate(struct cpu *, int); 676 extern void term_cpu_mstate(struct cpu *); 677 extern void new_cpu_mstate(int, hrtime_t); 678 extern void get_cpu_mstate(struct cpu *, hrtime_t *); 679 extern void thread_nomigrate(void); 680 extern void thread_allowmigrate(void); 681 extern void weakbinding_stop(void); 682 extern void weakbinding_start(void); 683 684 /* 685 * The following routines affect the CPUs participation in interrupt processing, 686 * if that is applicable on the architecture. This only affects interrupts 687 * which aren't directed at the processor (not cross calls). 688 * 689 * cpu_disable_intr returns non-zero if interrupts were previously enabled. 690 */ 691 int cpu_disable_intr(struct cpu *cp); /* stop issuing interrupts to cpu */ 692 void cpu_enable_intr(struct cpu *cp); /* start issuing interrupts to cpu */ 693 694 /* 695 * The mutex cpu_lock protects cpu_flags for all CPUs, as well as the ncpus 696 * and ncpus_online counts. 697 */ 698 extern kmutex_t cpu_lock; /* lock protecting CPU data */ 699 700 typedef enum { 701 CPU_INIT, 702 CPU_CONFIG, 703 CPU_UNCONFIG, 704 CPU_ON, 705 CPU_OFF, 706 CPU_CPUPART_IN, 707 CPU_CPUPART_OUT 708 } cpu_setup_t; 709 710 typedef int cpu_setup_func_t(cpu_setup_t, int, void *); 711 712 /* 713 * Routines used to register interest in cpu's being added to or removed 714 * from the system. 715 */ 716 extern void register_cpu_setup_func(cpu_setup_func_t *, void *); 717 extern void unregister_cpu_setup_func(cpu_setup_func_t *, void *); 718 extern void cpu_state_change_notify(int, cpu_setup_t); 719 720 /* 721 * Create various strings that describe the given CPU for the 722 * processor_info system call and configuration-related kstats. 723 */ 724 #define CPU_IDSTRLEN 100 725 726 extern void init_cpu_info(struct cpu *); 727 extern void populate_idstr(struct cpu *); 728 extern void cpu_vm_data_init(struct cpu *); 729 extern void cpu_vm_data_destroy(struct cpu *); 730 731 #endif /* _KERNEL */ 732 733 #ifdef __cplusplus 734 } 735 #endif 736 737 #endif /* _SYS_CPUVAR_H */ 738