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 2006 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 #pragma ident "%Z%%M% %I% %E% SMI" 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 37 #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP) 38 #include <sys/machcpuvar.h> 39 #endif 40 41 #include <sys/types.h> 42 #include <sys/file.h> 43 #include <sys/bitmap.h> 44 #include <sys/rwlock.h> 45 #include <sys/msacct.h> 46 #if defined(__GNUC__) && defined(_ASM_INLINES) && defined(_KERNEL) && \ 47 (defined(__i386) || defined(__amd64)) 48 #include <asm/cpuvar.h> 49 #endif 50 51 #ifdef __cplusplus 52 extern "C" { 53 #endif 54 55 struct squeue_set_s; 56 57 #define CPU_CACHE_COHERENCE_SIZE 64 58 #define S_LOADAVG_SZ 11 59 #define S_MOVAVG_SZ 10 60 61 struct loadavg_s { 62 int lg_cur; /* current loadavg entry */ 63 unsigned int lg_len; /* number entries recorded */ 64 hrtime_t lg_total; /* used to temporarily hold load totals */ 65 hrtime_t lg_loads[S_LOADAVG_SZ]; /* table of recorded entries */ 66 }; 67 68 /* 69 * For fast event tracing. 70 */ 71 struct ftrace_record; 72 typedef struct ftrace_data { 73 int ftd_state; /* ftrace flags */ 74 kmutex_t ftd_mutex; /* ftrace buffer lock */ 75 struct ftrace_record *ftd_cur; /* current record */ 76 struct ftrace_record *ftd_first; /* first record */ 77 struct ftrace_record *ftd_last; /* last record */ 78 } ftrace_data_t; 79 80 struct cyc_cpu; 81 struct nvlist; 82 83 /* 84 * Per-CPU data. 85 * 86 * Be careful adding new members: if they are not the same in all modules (e.g. 87 * change size depending on a #define), CTF uniquification can fail to work 88 * properly. Furthermore, this is transitive in that it applies recursively to 89 * all types pointed to by cpu_t. 90 */ 91 typedef struct cpu { 92 processorid_t cpu_id; /* CPU number */ 93 processorid_t cpu_seqid; /* sequential CPU id (0..ncpus-1) */ 94 volatile cpu_flag_t cpu_flags; /* flags indicating CPU state */ 95 struct cpu *cpu_self; /* pointer to itself */ 96 kthread_t *cpu_thread; /* current thread */ 97 kthread_t *cpu_idle_thread; /* idle thread for this CPU */ 98 kthread_t *cpu_pause_thread; /* pause thread for this CPU */ 99 klwp_id_t cpu_lwp; /* current lwp (if any) */ 100 klwp_id_t cpu_fpowner; /* currently loaded fpu owner */ 101 struct cpupart *cpu_part; /* partition with this CPU */ 102 struct lgrp_ld *cpu_lpl; /* pointer to this cpu's load */ 103 struct chip *cpu_chip; /* cpu's chip data */ 104 int cpu_rechoose; /* cpu's rechoose_interval */ 105 int cpu_cache_offset; /* see kmem.c for details */ 106 107 /* 108 * Links to other CPUs. It is safe to walk these lists if 109 * one of the following is true: 110 * - cpu_lock held 111 * - preemption disabled via kpreempt_disable 112 * - PIL >= DISP_LEVEL 113 * - acting thread is an interrupt thread 114 * - all other CPUs are paused 115 */ 116 struct cpu *cpu_next; /* next existing CPU */ 117 struct cpu *cpu_prev; /* prev existing CPU */ 118 struct cpu *cpu_next_onln; /* next online (enabled) CPU */ 119 struct cpu *cpu_prev_onln; /* prev online (enabled) CPU */ 120 struct cpu *cpu_next_part; /* next CPU in partition */ 121 struct cpu *cpu_prev_part; /* prev CPU in partition */ 122 struct cpu *cpu_next_lgrp; /* next CPU in latency group */ 123 struct cpu *cpu_prev_lgrp; /* prev CPU in latency group */ 124 struct cpu *cpu_next_chip; /* next CPU on chip */ 125 struct cpu *cpu_prev_chip; /* prev CPU on chip */ 126 struct cpu *cpu_next_lpl; /* next CPU in lgrp partition */ 127 struct cpu *cpu_prev_lpl; 128 void *cpu_reserved[4]; /* reserved for future use */ 129 130 /* 131 * Scheduling variables. 132 */ 133 disp_t *cpu_disp; /* dispatch queue data */ 134 /* 135 * Note that cpu_disp is set before the CPU is added to the system 136 * and is never modified. Hence, no additional locking is needed 137 * beyond what's necessary to access the cpu_t structure. 138 */ 139 char cpu_runrun; /* scheduling flag - set to preempt */ 140 char cpu_kprunrun; /* force kernel preemption */ 141 pri_t cpu_chosen_level; /* priority at which cpu */ 142 /* was chosen for scheduling */ 143 kthread_t *cpu_dispthread; /* thread selected for dispatch */ 144 disp_lock_t cpu_thread_lock; /* dispatcher lock on current thread */ 145 uint8_t cpu_disp_flags; /* flags used by dispatcher */ 146 /* 147 * The following field is updated when ever the cpu_dispthread 148 * changes. Also in places, where the current thread(cpu_dispthread) 149 * priority changes. This is used in disp_lowpri_cpu() 150 */ 151 pri_t cpu_dispatch_pri; /* priority of cpu_dispthread */ 152 clock_t cpu_last_swtch; /* last time switched to new thread */ 153 154 /* 155 * Interrupt data. 156 */ 157 caddr_t cpu_intr_stack; /* interrupt stack */ 158 kthread_t *cpu_intr_thread; /* interrupt thread list */ 159 uint_t cpu_intr_actv; /* interrupt levels active (bitmask) */ 160 int cpu_base_spl; /* priority for highest rupt active */ 161 162 /* 163 * Statistics. 164 */ 165 cpu_stats_t cpu_stats; /* per-CPU statistics */ 166 struct kstat *cpu_info_kstat; /* kstat for cpu info */ 167 168 uintptr_t cpu_profile_pc; /* kernel PC in profile interrupt */ 169 uintptr_t cpu_profile_upc; /* user PC in profile interrupt */ 170 uintptr_t cpu_profile_pil; /* PIL when profile interrupted */ 171 172 ftrace_data_t cpu_ftrace; /* per cpu ftrace data */ 173 174 clock_t cpu_deadman_lbolt; /* used by deadman() */ 175 uint_t cpu_deadman_countdown; /* used by deadman() */ 176 177 kmutex_t cpu_cpc_ctxlock; /* protects context for idle thread */ 178 kcpc_ctx_t *cpu_cpc_ctx; /* performance counter context */ 179 180 /* 181 * Configuration information for the processor_info system call. 182 */ 183 processor_info_t cpu_type_info; /* config info */ 184 time_t cpu_state_begin; /* when CPU entered current state */ 185 char cpu_cpr_flags; /* CPR related info */ 186 struct cyc_cpu *cpu_cyclic; /* per cpu cyclic subsystem data */ 187 struct squeue_set_s *cpu_squeue_set; /* per cpu squeue set */ 188 struct nvlist *cpu_props; /* pool-related properties */ 189 190 krwlock_t cpu_ft_lock; /* DTrace: fasttrap lock */ 191 uintptr_t cpu_dtrace_caller; /* DTrace: caller, if any */ 192 hrtime_t cpu_dtrace_chillmark; /* DTrace: chill mark time */ 193 hrtime_t cpu_dtrace_chilled; /* DTrace: total chill time */ 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 /* 215 * New members must be added /before/ this member, as the CTF tools 216 * rely on this being the last field before cpu_m, so they can 217 * correctly calculate the offset when synthetically adding the cpu_m 218 * member in objects that do not have it. This fixup is required for 219 * uniquification to work correctly. 220 */ 221 uintptr_t cpu_m_pad; 222 223 #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP) 224 struct machcpu cpu_m; /* per architecture info */ 225 #endif 226 } cpu_t; 227 228 /* 229 * The cpu_core structure consists of per-CPU state available in any context. 230 * On some architectures, this may mean that the page(s) containing the 231 * NCPU-sized array of cpu_core structures must be locked in the TLB -- it 232 * is up to the platform to assure that this is performed properly. Note that 233 * the structure is sized to avoid false sharing. 234 */ 235 #define CPUC_SIZE (sizeof (uint16_t) + sizeof (uintptr_t) + \ 236 sizeof (kmutex_t)) 237 #define CPUC_PADSIZE CPU_CACHE_COHERENCE_SIZE - CPUC_SIZE 238 239 typedef struct cpu_core { 240 uint16_t cpuc_dtrace_flags; /* DTrace flags */ 241 uint8_t cpuc_pad[CPUC_PADSIZE]; /* padding */ 242 uintptr_t cpuc_dtrace_illval; /* DTrace illegal value */ 243 kmutex_t cpuc_pid_lock; /* DTrace pid provider lock */ 244 } cpu_core_t; 245 246 #ifdef _KERNEL 247 extern cpu_core_t cpu_core[]; 248 #endif /* _KERNEL */ 249 250 /* 251 * CPU_ON_INTR() macro. Returns non-zero if currently on interrupt stack. 252 * Note that this isn't a test for a high PIL. For example, cpu_intr_actv 253 * does not get updated when we go through sys_trap from TL>0 at high PIL. 254 * getpil() should be used instead to check for PIL levels. 255 */ 256 #define CPU_ON_INTR(cpup) ((cpup)->cpu_intr_actv >> (LOCK_LEVEL + 1)) 257 258 #if defined(_KERNEL) || defined(_KMEMUSER) 259 260 #define INTR_STACK_SIZE MAX(DEFAULTSTKSZ, PAGESIZE) 261 262 /* MEMBERS PROTECTED BY "atomicity": cpu_flags */ 263 264 /* 265 * Flags in the CPU structure. 266 * 267 * These are protected by cpu_lock (except during creation). 268 * 269 * Offlined-CPUs have three stages of being offline: 270 * 271 * CPU_ENABLE indicates that the CPU is participating in I/O interrupts 272 * that can be directed at a number of different CPUs. If CPU_ENABLE 273 * is off, the CPU will not be given interrupts that can be sent elsewhere, 274 * but will still get interrupts from devices associated with that CPU only, 275 * and from other CPUs. 276 * 277 * CPU_OFFLINE indicates that the dispatcher should not allow any threads 278 * other than interrupt threads to run on that CPU. A CPU will not have 279 * CPU_OFFLINE set if there are any bound threads (besides interrupts). 280 * 281 * CPU_QUIESCED is set if p_offline was able to completely turn idle the 282 * CPU and it will not have to run interrupt threads. In this case it'll 283 * stay in the idle loop until CPU_QUIESCED is turned off. 284 * 285 * CPU_FROZEN is used only by CPR to mark CPUs that have been successfully 286 * suspended (in the suspend path), or have yet to be resumed (in the resume 287 * case). 288 * 289 * On some platforms CPUs can be individually powered off. 290 * The following flags are set for powered off CPUs: CPU_QUIESCED, 291 * CPU_OFFLINE, and CPU_POWEROFF. The following flags are cleared: 292 * CPU_RUNNING, CPU_READY, CPU_EXISTS, and CPU_ENABLE. 293 */ 294 #define CPU_RUNNING 0x001 /* CPU running */ 295 #define CPU_READY 0x002 /* CPU ready for cross-calls */ 296 #define CPU_QUIESCED 0x004 /* CPU will stay in idle */ 297 #define CPU_EXISTS 0x008 /* CPU is configured */ 298 #define CPU_ENABLE 0x010 /* CPU enabled for interrupts */ 299 #define CPU_OFFLINE 0x020 /* CPU offline via p_online */ 300 #define CPU_POWEROFF 0x040 /* CPU is powered off */ 301 #define CPU_FROZEN 0x080 /* CPU is frozen via CPR suspend */ 302 #define CPU_SPARE 0x100 /* CPU offline available for use */ 303 #define CPU_FAULTED 0x200 /* CPU offline diagnosed faulty */ 304 305 #define CPU_ACTIVE(cpu) (((cpu)->cpu_flags & CPU_OFFLINE) == 0) 306 307 /* 308 * Flags for cpu_offline(), cpu_faulted(), and cpu_spare(). 309 */ 310 #define CPU_FORCED 0x0001 /* Force CPU offline */ 311 312 /* 313 * DTrace flags. 314 */ 315 #define CPU_DTRACE_NOFAULT 0x0001 /* Don't fault */ 316 #define CPU_DTRACE_DROP 0x0002 /* Drop this ECB */ 317 #define CPU_DTRACE_BADADDR 0x0004 /* DTrace fault: bad address */ 318 #define CPU_DTRACE_BADALIGN 0x0008 /* DTrace fault: bad alignment */ 319 #define CPU_DTRACE_DIVZERO 0x0010 /* DTrace fault: divide by zero */ 320 #define CPU_DTRACE_ILLOP 0x0020 /* DTrace fault: illegal operation */ 321 #define CPU_DTRACE_NOSCRATCH 0x0040 /* DTrace fault: out of scratch */ 322 #define CPU_DTRACE_KPRIV 0x0080 /* DTrace fault: bad kernel access */ 323 #define CPU_DTRACE_UPRIV 0x0100 /* DTrace fault: bad user access */ 324 #define CPU_DTRACE_TUPOFLOW 0x0200 /* DTrace fault: tuple stack overflow */ 325 #if defined(__sparc) 326 #define CPU_DTRACE_FAKERESTORE 0x0400 /* pid provider hint to getreg */ 327 #endif 328 #define CPU_DTRACE_ENTRY 0x0800 /* pid provider hint to ustack() */ 329 330 #define CPU_DTRACE_FAULT (CPU_DTRACE_BADADDR | CPU_DTRACE_BADALIGN | \ 331 CPU_DTRACE_DIVZERO | CPU_DTRACE_ILLOP | \ 332 CPU_DTRACE_NOSCRATCH | CPU_DTRACE_KPRIV | \ 333 CPU_DTRACE_UPRIV | CPU_DTRACE_TUPOFLOW) 334 #define CPU_DTRACE_ERROR (CPU_DTRACE_FAULT | CPU_DTRACE_DROP) 335 336 /* 337 * Dispatcher flags 338 * These flags must be changed only by the current CPU. 339 */ 340 #define CPU_DISP_DONTSTEAL 0x01 /* CPU undergoing context swtch */ 341 #define CPU_DISP_HALTED 0x02 /* CPU halted waiting for interrupt */ 342 343 344 #endif /* _KERNEL || _KMEMUSER */ 345 346 #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP) 347 348 /* 349 * Macros for manipulating sets of CPUs as a bitmap. Note that this 350 * bitmap may vary in size depending on the maximum CPU id a specific 351 * platform supports. This may be different than the number of CPUs 352 * the platform supports, since CPU ids can be sparse. We define two 353 * sets of macros; one for platforms where the maximum CPU id is less 354 * than the number of bits in a single word (32 in a 32-bit kernel, 355 * 64 in a 64-bit kernel), and one for platforms that require bitmaps 356 * of more than one word. 357 */ 358 359 #define CPUSET_WORDS BT_BITOUL(NCPU) 360 #define CPUSET_NOTINSET ((uint_t)-1) 361 362 #if CPUSET_WORDS > 1 363 364 typedef struct cpuset { 365 ulong_t cpub[CPUSET_WORDS]; 366 } cpuset_t; 367 368 /* 369 * Private functions for manipulating cpusets that do not fit in a 370 * single word. These should not be used directly; instead the 371 * CPUSET_* macros should be used so the code will be portable 372 * across different definitions of NCPU. 373 */ 374 extern void cpuset_all(cpuset_t *); 375 extern void cpuset_all_but(cpuset_t *, uint_t); 376 extern int cpuset_isnull(cpuset_t *); 377 extern int cpuset_cmp(cpuset_t *, cpuset_t *); 378 extern void cpuset_only(cpuset_t *, uint_t); 379 extern uint_t cpuset_find(cpuset_t *); 380 extern void cpuset_bounds(cpuset_t *, uint_t *, uint_t *); 381 382 #define CPUSET_ALL(set) cpuset_all(&(set)) 383 #define CPUSET_ALL_BUT(set, cpu) cpuset_all_but(&(set), cpu) 384 #define CPUSET_ONLY(set, cpu) cpuset_only(&(set), cpu) 385 #define CPU_IN_SET(set, cpu) BT_TEST((set).cpub, cpu) 386 #define CPUSET_ADD(set, cpu) BT_SET((set).cpub, cpu) 387 #define CPUSET_DEL(set, cpu) BT_CLEAR((set).cpub, cpu) 388 #define CPUSET_ISNULL(set) cpuset_isnull(&(set)) 389 #define CPUSET_ISEQUAL(set1, set2) cpuset_cmp(&(set1), &(set2)) 390 391 /* 392 * Find one CPU in the cpuset. 393 * Sets "cpu" to the id of the found CPU, or CPUSET_NOTINSET if no cpu 394 * could be found. (i.e. empty set) 395 */ 396 #define CPUSET_FIND(set, cpu) { \ 397 cpu = cpuset_find(&(set)); \ 398 } 399 400 /* 401 * Determine the smallest and largest CPU id in the set. Returns 402 * CPUSET_NOTINSET in smallest and largest when set is empty. 403 */ 404 #define CPUSET_BOUNDS(set, smallest, largest) { \ 405 cpuset_bounds(&(set), &(smallest), &(largest)); \ 406 } 407 408 /* 409 * Atomic cpuset operations 410 * These are safe to use for concurrent cpuset manipulations. 411 * "xdel" and "xadd" are exclusive operations, that set "result" to "0" 412 * if the add or del was successful, or "-1" if not successful. 413 * (e.g. attempting to add a cpu to a cpuset that's already there, or 414 * deleting a cpu that's not in the cpuset) 415 */ 416 417 #define CPUSET_ATOMIC_DEL(set, cpu) BT_ATOMIC_CLEAR((set).cpub, (cpu)) 418 #define CPUSET_ATOMIC_ADD(set, cpu) BT_ATOMIC_SET((set).cpub, (cpu)) 419 420 #define CPUSET_ATOMIC_XADD(set, cpu, result) \ 421 BT_ATOMIC_SET_EXCL((set).cpub, cpu, result) 422 423 #define CPUSET_ATOMIC_XDEL(set, cpu, result) \ 424 BT_ATOMIC_CLEAR_EXCL((set).cpub, cpu, result) 425 426 427 #define CPUSET_OR(set1, set2) { \ 428 int _i; \ 429 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 430 (set1).cpub[_i] |= (set2).cpub[_i]; \ 431 } 432 433 #define CPUSET_AND(set1, set2) { \ 434 int _i; \ 435 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 436 (set1).cpub[_i] &= (set2).cpub[_i]; \ 437 } 438 439 #define CPUSET_ZERO(set) { \ 440 int _i; \ 441 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 442 (set).cpub[_i] = 0; \ 443 } 444 445 #elif CPUSET_WORDS == 1 446 447 typedef ulong_t cpuset_t; /* a set of CPUs */ 448 449 #define CPUSET(cpu) (1UL << (cpu)) 450 451 #define CPUSET_ALL(set) ((void)((set) = ~0UL)) 452 #define CPUSET_ALL_BUT(set, cpu) ((void)((set) = ~CPUSET(cpu))) 453 #define CPUSET_ONLY(set, cpu) ((void)((set) = CPUSET(cpu))) 454 #define CPU_IN_SET(set, cpu) ((set) & CPUSET(cpu)) 455 #define CPUSET_ADD(set, cpu) ((void)((set) |= CPUSET(cpu))) 456 #define CPUSET_DEL(set, cpu) ((void)((set) &= ~CPUSET(cpu))) 457 #define CPUSET_ISNULL(set) ((set) == 0) 458 #define CPUSET_ISEQUAL(set1, set2) ((set1) == (set2)) 459 #define CPUSET_OR(set1, set2) ((void)((set1) |= (set2))) 460 #define CPUSET_AND(set1, set2) ((void)((set1) &= (set2))) 461 #define CPUSET_ZERO(set) ((void)((set) = 0)) 462 463 #define CPUSET_FIND(set, cpu) { \ 464 cpu = (uint_t)(lowbit(set) - 1); \ 465 } 466 467 #define CPUSET_BOUNDS(set, smallest, largest) { \ 468 smallest = (uint_t)(lowbit(set) - 1); \ 469 largest = (uint_t)(highbit(set) - 1); \ 470 } 471 472 #define CPUSET_ATOMIC_DEL(set, cpu) atomic_and_long(&(set), ~CPUSET(cpu)) 473 #define CPUSET_ATOMIC_ADD(set, cpu) atomic_or_long(&(set), CPUSET(cpu)) 474 475 #define CPUSET_ATOMIC_XADD(set, cpu, result) \ 476 { result = atomic_set_long_excl(&(set), (cpu)); } 477 478 #define CPUSET_ATOMIC_XDEL(set, cpu, result) \ 479 { result = atomic_clear_long_excl(&(set), (cpu)); } 480 481 #else /* CPUSET_WORDS <= 0 */ 482 483 #error NCPU is undefined or invalid 484 485 #endif /* CPUSET_WORDS */ 486 487 extern cpuset_t cpu_seqid_inuse; 488 489 #endif /* (_KERNEL || _KMEMUSER) && _MACHDEP */ 490 491 #define CPU_CPR_OFFLINE 0x0 492 #define CPU_CPR_ONLINE 0x1 493 #define CPU_CPR_IS_OFFLINE(cpu) (((cpu)->cpu_cpr_flags & CPU_CPR_ONLINE) == 0) 494 #define CPU_SET_CPR_FLAGS(cpu, flag) ((cpu)->cpu_cpr_flags |= flag) 495 496 #if defined(_KERNEL) || defined(_KMEMUSER) 497 498 extern struct cpu *cpu[]; /* indexed by CPU number */ 499 extern cpu_t *cpu_list; /* list of CPUs */ 500 extern int ncpus; /* number of CPUs present */ 501 extern int ncpus_online; /* number of CPUs not quiesced */ 502 extern int max_ncpus; /* max present before ncpus is known */ 503 extern int boot_max_ncpus; /* like max_ncpus but for real */ 504 extern processorid_t max_cpuid; /* maximum CPU number */ 505 extern struct cpu *cpu_inmotion; /* offline or partition move target */ 506 507 #if defined(__i386) || defined(__amd64) 508 extern struct cpu *curcpup(void); 509 #define CPU (curcpup()) /* Pointer to current CPU */ 510 #else 511 #define CPU (curthread->t_cpu) /* Pointer to current CPU */ 512 #endif 513 514 /* 515 * CPU_CURRENT indicates to thread_affinity_set to use CPU->cpu_id 516 * as the target and to grab cpu_lock instead of requiring the caller 517 * to grab it. 518 */ 519 #define CPU_CURRENT -3 520 521 /* 522 * Per-CPU statistics 523 * 524 * cpu_stats_t contains numerous system and VM-related statistics, in the form 525 * of gauges or monotonically-increasing event occurrence counts. 526 */ 527 528 #define CPU_STATS_ENTER_K() kpreempt_disable() 529 #define CPU_STATS_EXIT_K() kpreempt_enable() 530 531 #define CPU_STATS_ADD_K(class, stat, amount) \ 532 { kpreempt_disable(); /* keep from switching CPUs */\ 533 CPU_STATS_ADDQ(CPU, class, stat, amount); \ 534 kpreempt_enable(); \ 535 } 536 537 #define CPU_STATS_ADDQ(cp, class, stat, amount) { \ 538 extern void __dtrace_probe___cpu_##class##info_##stat(uint_t, \ 539 uint64_t *, cpu_t *); \ 540 uint64_t *stataddr = &((cp)->cpu_stats.class.stat); \ 541 __dtrace_probe___cpu_##class##info_##stat((amount), \ 542 stataddr, cp); \ 543 *(stataddr) += (amount); \ 544 } 545 546 #define CPU_STATS(cp, stat) \ 547 ((cp)->cpu_stats.stat) 548 549 #endif /* _KERNEL || _KMEMUSER */ 550 551 /* 552 * CPU support routines. 553 */ 554 #if defined(_KERNEL) && defined(__STDC__) /* not for genassym.c */ 555 556 struct zone; 557 558 void cpu_list_init(cpu_t *); 559 void cpu_add_unit(cpu_t *); 560 void cpu_del_unit(int cpuid); 561 void cpu_add_active(cpu_t *); 562 void cpu_kstat_init(cpu_t *); 563 void cpu_visibility_add(cpu_t *, struct zone *); 564 void cpu_visibility_remove(cpu_t *, struct zone *); 565 void cpu_visibility_configure(cpu_t *, struct zone *); 566 void cpu_visibility_unconfigure(cpu_t *, struct zone *); 567 void cpu_visibility_online(cpu_t *, struct zone *); 568 void cpu_visibility_offline(cpu_t *, struct zone *); 569 void cpu_create_intrstat(cpu_t *); 570 void cpu_delete_intrstat(cpu_t *); 571 int cpu_kstat_intrstat_update(kstat_t *, int); 572 void cpu_intr_swtch_enter(kthread_t *); 573 void cpu_intr_swtch_exit(kthread_t *); 574 575 void mbox_lock_init(void); /* initialize cross-call locks */ 576 void mbox_init(int cpun); /* initialize cross-calls */ 577 void poke_cpu(int cpun); /* interrupt another CPU (to preempt) */ 578 579 void pause_cpus(cpu_t *off_cp); 580 void start_cpus(void); 581 int cpus_paused(void); 582 583 void cpu_pause_init(void); 584 cpu_t *cpu_get(processorid_t cpun); /* get the CPU struct associated */ 585 586 int cpu_online(cpu_t *cp); /* take cpu online */ 587 int cpu_offline(cpu_t *cp, int flags); /* take cpu offline */ 588 int cpu_spare(cpu_t *cp, int flags); /* take cpu to spare */ 589 int cpu_faulted(cpu_t *cp, int flags); /* take cpu to faulted */ 590 int cpu_poweron(cpu_t *cp); /* take powered-off cpu to offline */ 591 int cpu_poweroff(cpu_t *cp); /* take offline cpu to powered-off */ 592 593 cpu_t *cpu_intr_next(cpu_t *cp); /* get next online CPU taking intrs */ 594 int cpu_intr_count(cpu_t *cp); /* count # of CPUs handling intrs */ 595 int cpu_intr_on(cpu_t *cp); /* CPU taking I/O interrupts? */ 596 void cpu_intr_enable(cpu_t *cp); /* enable I/O interrupts */ 597 int cpu_intr_disable(cpu_t *cp); /* disable I/O interrupts */ 598 void cpu_intr_alloc(cpu_t *cp, int n); /* allocate interrupt threads */ 599 600 /* 601 * Routines for checking CPU states. 602 */ 603 int cpu_is_online(cpu_t *); /* check if CPU is online */ 604 int cpu_is_nointr(cpu_t *); /* check if CPU can service intrs */ 605 int cpu_is_active(cpu_t *); /* check if CPU can run threads */ 606 int cpu_is_offline(cpu_t *); /* check if CPU is offline */ 607 int cpu_is_poweredoff(cpu_t *); /* check if CPU is powered off */ 608 609 int cpu_flagged_online(cpu_flag_t); /* flags show CPU is online */ 610 int cpu_flagged_nointr(cpu_flag_t); /* flags show CPU not handling intrs */ 611 int cpu_flagged_active(cpu_flag_t); /* flags show CPU scheduling threads */ 612 int cpu_flagged_offline(cpu_flag_t); /* flags show CPU is offline */ 613 int cpu_flagged_poweredoff(cpu_flag_t); /* flags show CPU is powered off */ 614 615 /* 616 * The processor_info(2) state of a CPU is a simplified representation suitable 617 * for use by an application program. Kernel subsystems should utilize the 618 * internal per-CPU state as given by the cpu_flags member of the cpu structure, 619 * as this information may include platform- or architecture-specific state 620 * critical to a subsystem's disposition of a particular CPU. 621 */ 622 void cpu_set_state(cpu_t *); /* record/timestamp current state */ 623 int cpu_get_state(cpu_t *); /* get current cpu state */ 624 const char *cpu_get_state_str(cpu_t *); /* get current cpu state as string */ 625 626 int cpu_configure(int); 627 int cpu_unconfigure(int); 628 void cpu_destroy_bound_threads(cpu_t *cp); 629 630 extern int cpu_bind_thread(kthread_t *tp, processorid_t bind, 631 processorid_t *obind, int *error); 632 extern int cpu_unbind(processorid_t cpu_id); 633 extern void thread_affinity_set(kthread_t *t, int cpu_id); 634 extern void thread_affinity_clear(kthread_t *t); 635 extern void affinity_set(int cpu_id); 636 extern void affinity_clear(void); 637 extern void init_cpu_mstate(struct cpu *, int); 638 extern void term_cpu_mstate(struct cpu *); 639 extern void new_cpu_mstate(int, hrtime_t); 640 extern void get_cpu_mstate(struct cpu *, hrtime_t *); 641 extern void thread_nomigrate(void); 642 extern void thread_allowmigrate(void); 643 extern void weakbinding_stop(void); 644 extern void weakbinding_start(void); 645 646 /* 647 * The following routines affect the CPUs participation in interrupt processing, 648 * if that is applicable on the architecture. This only affects interrupts 649 * which aren't directed at the processor (not cross calls). 650 * 651 * cpu_disable_intr returns non-zero if interrupts were previously enabled. 652 */ 653 int cpu_disable_intr(struct cpu *cp); /* stop issuing interrupts to cpu */ 654 void cpu_enable_intr(struct cpu *cp); /* start issuing interrupts to cpu */ 655 656 /* 657 * The mutex cpu_lock protects cpu_flags for all CPUs, as well as the ncpus 658 * and ncpus_online counts. 659 */ 660 extern kmutex_t cpu_lock; /* lock protecting CPU data */ 661 662 typedef enum { 663 CPU_INIT, 664 CPU_CONFIG, 665 CPU_UNCONFIG, 666 CPU_ON, 667 CPU_OFF, 668 CPU_CPUPART_IN, 669 CPU_CPUPART_OUT 670 } cpu_setup_t; 671 672 typedef int cpu_setup_func_t(cpu_setup_t, int, void *); 673 674 /* 675 * Routines used to register interest in cpu's being added to or removed 676 * from the system. 677 */ 678 extern void register_cpu_setup_func(cpu_setup_func_t *, void *); 679 extern void unregister_cpu_setup_func(cpu_setup_func_t *, void *); 680 extern void cpu_state_change_notify(int, cpu_setup_t); 681 682 /* 683 * Create various strings that describe the given CPU for the 684 * processor_info system call and configuration-related kstats. 685 */ 686 #define CPU_IDSTRLEN 100 687 688 extern void init_cpu_info(struct cpu *); 689 extern void cpu_vm_data_init(struct cpu *); 690 extern void cpu_vm_data_destroy(struct cpu *); 691 692 #endif /* _KERNEL */ 693 694 #ifdef __cplusplus 695 } 696 #endif 697 698 #endif /* _SYS_CPUVAR_H */ 699