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 2007 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_unused; /* ftrace buffer lock, unused */ 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 int cpu_cache_offset; /* see kmem.c for details */ 104 105 /* 106 * Links to other CPUs. It is safe to walk these lists if 107 * one of the following is true: 108 * - cpu_lock held 109 * - preemption disabled via kpreempt_disable 110 * - PIL >= DISP_LEVEL 111 * - acting thread is an interrupt thread 112 * - all other CPUs are paused 113 */ 114 struct cpu *cpu_next; /* next existing CPU */ 115 struct cpu *cpu_prev; /* prev existing CPU */ 116 struct cpu *cpu_next_onln; /* next online (enabled) CPU */ 117 struct cpu *cpu_prev_onln; /* prev online (enabled) CPU */ 118 struct cpu *cpu_next_part; /* next CPU in partition */ 119 struct cpu *cpu_prev_part; /* prev CPU in partition */ 120 struct cpu *cpu_next_lgrp; /* next CPU in latency group */ 121 struct cpu *cpu_prev_lgrp; /* prev CPU in latency group */ 122 struct cpu *cpu_next_lpl; /* next CPU in lgrp partition */ 123 struct cpu *cpu_prev_lpl; 124 125 struct cpu_pg *cpu_pg; /* cpu's processor groups */ 126 127 void *cpu_reserved[4]; /* reserved for future use */ 128 129 /* 130 * Scheduling variables. 131 */ 132 disp_t *cpu_disp; /* dispatch queue data */ 133 /* 134 * Note that cpu_disp is set before the CPU is added to the system 135 * and is never modified. Hence, no additional locking is needed 136 * beyond what's necessary to access the cpu_t structure. 137 */ 138 char cpu_runrun; /* scheduling flag - set to preempt */ 139 char cpu_kprunrun; /* force kernel preemption */ 140 pri_t cpu_chosen_level; /* priority at which cpu */ 141 /* was chosen for scheduling */ 142 kthread_t *cpu_dispthread; /* thread selected for dispatch */ 143 disp_lock_t cpu_thread_lock; /* dispatcher lock on current thread */ 144 uint8_t cpu_disp_flags; /* flags used by dispatcher */ 145 /* 146 * The following field is updated when ever the cpu_dispthread 147 * changes. Also in places, where the current thread(cpu_dispthread) 148 * priority changes. This is used in disp_lowpri_cpu() 149 */ 150 pri_t cpu_dispatch_pri; /* priority of cpu_dispthread */ 151 clock_t cpu_last_swtch; /* last time switched to new thread */ 152 153 /* 154 * Interrupt data. 155 */ 156 caddr_t cpu_intr_stack; /* interrupt stack */ 157 kthread_t *cpu_intr_thread; /* interrupt thread list */ 158 uint_t cpu_intr_actv; /* interrupt levels active (bitmask) */ 159 int cpu_base_spl; /* priority for highest rupt active */ 160 161 /* 162 * Statistics. 163 */ 164 cpu_stats_t cpu_stats; /* per-CPU statistics */ 165 struct kstat *cpu_info_kstat; /* kstat for cpu info */ 166 167 uintptr_t cpu_profile_pc; /* kernel PC in profile interrupt */ 168 uintptr_t cpu_profile_upc; /* user PC in profile interrupt */ 169 uintptr_t cpu_profile_pil; /* PIL when profile interrupted */ 170 171 ftrace_data_t cpu_ftrace; /* per cpu ftrace data */ 172 173 clock_t cpu_deadman_lbolt; /* used by deadman() */ 174 uint_t cpu_deadman_countdown; /* used by deadman() */ 175 176 kmutex_t cpu_cpc_ctxlock; /* protects context for idle thread */ 177 kcpc_ctx_t *cpu_cpc_ctx; /* performance counter context */ 178 179 /* 180 * Configuration information for the processor_info system call. 181 */ 182 processor_info_t cpu_type_info; /* config info */ 183 time_t cpu_state_begin; /* when CPU entered current state */ 184 char cpu_cpr_flags; /* CPR related info */ 185 struct cyc_cpu *cpu_cyclic; /* per cpu cyclic subsystem data */ 186 struct squeue_set_s *cpu_squeue_set; /* per cpu squeue set */ 187 struct nvlist *cpu_props; /* pool-related properties */ 188 189 krwlock_t cpu_ft_lock; /* DTrace: fasttrap lock */ 190 uintptr_t cpu_dtrace_caller; /* DTrace: caller, if any */ 191 hrtime_t cpu_dtrace_chillmark; /* DTrace: chill mark time */ 192 hrtime_t cpu_dtrace_chilled; /* DTrace: total chill time */ 193 volatile uint16_t cpu_mstate; /* cpu microstate */ 194 volatile uint16_t cpu_mstate_gen; /* generation counter */ 195 volatile hrtime_t cpu_mstate_start; /* cpu microstate start time */ 196 volatile hrtime_t cpu_acct[NCMSTATES]; /* cpu microstate data */ 197 hrtime_t cpu_intracct[NCMSTATES]; /* interrupt mstate data */ 198 hrtime_t cpu_waitrq; /* cpu run-queue wait time */ 199 struct loadavg_s cpu_loadavg; /* loadavg info for this cpu */ 200 201 char *cpu_idstr; /* for printing and debugging */ 202 char *cpu_brandstr; /* for printing */ 203 204 /* 205 * Sum of all device interrupt weights that are currently directed at 206 * this cpu. Cleared at start of interrupt redistribution. 207 */ 208 int32_t cpu_intr_weight; 209 void *cpu_vm_data; 210 211 struct cpu_physid *cpu_physid; /* physical associations */ 212 213 uint64_t cpu_curr_clock; /* current clock freq in Hz */ 214 char *cpu_supp_freqs; /* supported freqs in Hz */ 215 216 /* 217 * New members must be added /before/ this member, as the CTF tools 218 * rely on this being the last field before cpu_m, so they can 219 * correctly calculate the offset when synthetically adding the cpu_m 220 * member in objects that do not have it. This fixup is required for 221 * uniquification to work correctly. 222 */ 223 uintptr_t cpu_m_pad; 224 225 #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP) 226 struct machcpu cpu_m; /* per architecture info */ 227 #endif 228 } cpu_t; 229 230 /* 231 * The cpu_core structure consists of per-CPU state available in any context. 232 * On some architectures, this may mean that the page(s) containing the 233 * NCPU-sized array of cpu_core structures must be locked in the TLB -- it 234 * is up to the platform to assure that this is performed properly. Note that 235 * the structure is sized to avoid false sharing. 236 */ 237 #define CPUC_SIZE (sizeof (uint16_t) + sizeof (uintptr_t) + \ 238 sizeof (kmutex_t)) 239 #define CPUC_PADSIZE CPU_CACHE_COHERENCE_SIZE - CPUC_SIZE 240 241 typedef struct cpu_core { 242 uint16_t cpuc_dtrace_flags; /* DTrace flags */ 243 uint8_t cpuc_pad[CPUC_PADSIZE]; /* padding */ 244 uintptr_t cpuc_dtrace_illval; /* DTrace illegal value */ 245 kmutex_t cpuc_pid_lock; /* DTrace pid provider lock */ 246 } cpu_core_t; 247 248 #ifdef _KERNEL 249 extern cpu_core_t cpu_core[]; 250 #endif /* _KERNEL */ 251 252 /* 253 * CPU_ON_INTR() macro. Returns non-zero if currently on interrupt stack. 254 * Note that this isn't a test for a high PIL. For example, cpu_intr_actv 255 * does not get updated when we go through sys_trap from TL>0 at high PIL. 256 * getpil() should be used instead to check for PIL levels. 257 */ 258 #define CPU_ON_INTR(cpup) ((cpup)->cpu_intr_actv >> (LOCK_LEVEL + 1)) 259 260 #if defined(_KERNEL) || defined(_KMEMUSER) 261 262 #define INTR_STACK_SIZE MAX(DEFAULTSTKSZ, PAGESIZE) 263 264 /* MEMBERS PROTECTED BY "atomicity": cpu_flags */ 265 266 /* 267 * Flags in the CPU structure. 268 * 269 * These are protected by cpu_lock (except during creation). 270 * 271 * Offlined-CPUs have three stages of being offline: 272 * 273 * CPU_ENABLE indicates that the CPU is participating in I/O interrupts 274 * that can be directed at a number of different CPUs. If CPU_ENABLE 275 * is off, the CPU will not be given interrupts that can be sent elsewhere, 276 * but will still get interrupts from devices associated with that CPU only, 277 * and from other CPUs. 278 * 279 * CPU_OFFLINE indicates that the dispatcher should not allow any threads 280 * other than interrupt threads to run on that CPU. A CPU will not have 281 * CPU_OFFLINE set if there are any bound threads (besides interrupts). 282 * 283 * CPU_QUIESCED is set if p_offline was able to completely turn idle the 284 * CPU and it will not have to run interrupt threads. In this case it'll 285 * stay in the idle loop until CPU_QUIESCED is turned off. 286 * 287 * CPU_FROZEN is used only by CPR to mark CPUs that have been successfully 288 * suspended (in the suspend path), or have yet to be resumed (in the resume 289 * case). 290 * 291 * On some platforms CPUs can be individually powered off. 292 * The following flags are set for powered off CPUs: CPU_QUIESCED, 293 * CPU_OFFLINE, and CPU_POWEROFF. The following flags are cleared: 294 * CPU_RUNNING, CPU_READY, CPU_EXISTS, and CPU_ENABLE. 295 */ 296 #define CPU_RUNNING 0x001 /* CPU running */ 297 #define CPU_READY 0x002 /* CPU ready for cross-calls */ 298 #define CPU_QUIESCED 0x004 /* CPU will stay in idle */ 299 #define CPU_EXISTS 0x008 /* CPU is configured */ 300 #define CPU_ENABLE 0x010 /* CPU enabled for interrupts */ 301 #define CPU_OFFLINE 0x020 /* CPU offline via p_online */ 302 #define CPU_POWEROFF 0x040 /* CPU is powered off */ 303 #define CPU_FROZEN 0x080 /* CPU is frozen via CPR suspend */ 304 #define CPU_SPARE 0x100 /* CPU offline available for use */ 305 #define CPU_FAULTED 0x200 /* CPU offline diagnosed faulty */ 306 307 #define FMT_CPU_FLAGS \ 308 "\20\12fault\11spare\10frozen" \ 309 "\7poweroff\6offline\5enable\4exist\3quiesced\2ready\1run" 310 311 #define CPU_ACTIVE(cpu) (((cpu)->cpu_flags & CPU_OFFLINE) == 0) 312 313 /* 314 * Flags for cpu_offline(), cpu_faulted(), and cpu_spare(). 315 */ 316 #define CPU_FORCED 0x0001 /* Force CPU offline */ 317 318 /* 319 * DTrace flags. 320 */ 321 #define CPU_DTRACE_NOFAULT 0x0001 /* Don't fault */ 322 #define CPU_DTRACE_DROP 0x0002 /* Drop this ECB */ 323 #define CPU_DTRACE_BADADDR 0x0004 /* DTrace fault: bad address */ 324 #define CPU_DTRACE_BADALIGN 0x0008 /* DTrace fault: bad alignment */ 325 #define CPU_DTRACE_DIVZERO 0x0010 /* DTrace fault: divide by zero */ 326 #define CPU_DTRACE_ILLOP 0x0020 /* DTrace fault: illegal operation */ 327 #define CPU_DTRACE_NOSCRATCH 0x0040 /* DTrace fault: out of scratch */ 328 #define CPU_DTRACE_KPRIV 0x0080 /* DTrace fault: bad kernel access */ 329 #define CPU_DTRACE_UPRIV 0x0100 /* DTrace fault: bad user access */ 330 #define CPU_DTRACE_TUPOFLOW 0x0200 /* DTrace fault: tuple stack overflow */ 331 #if defined(__sparc) 332 #define CPU_DTRACE_FAKERESTORE 0x0400 /* pid provider hint to getreg */ 333 #endif 334 #define CPU_DTRACE_ENTRY 0x0800 /* pid provider hint to ustack() */ 335 #define CPU_DTRACE_BADSTACK 0x1000 /* DTrace fault: bad stack */ 336 337 #define CPU_DTRACE_FAULT (CPU_DTRACE_BADADDR | CPU_DTRACE_BADALIGN | \ 338 CPU_DTRACE_DIVZERO | CPU_DTRACE_ILLOP | \ 339 CPU_DTRACE_NOSCRATCH | CPU_DTRACE_KPRIV | \ 340 CPU_DTRACE_UPRIV | CPU_DTRACE_TUPOFLOW | \ 341 CPU_DTRACE_BADSTACK) 342 #define CPU_DTRACE_ERROR (CPU_DTRACE_FAULT | CPU_DTRACE_DROP) 343 344 /* 345 * Dispatcher flags 346 * These flags must be changed only by the current CPU. 347 */ 348 #define CPU_DISP_DONTSTEAL 0x01 /* CPU undergoing context swtch */ 349 #define CPU_DISP_HALTED 0x02 /* CPU halted waiting for interrupt */ 350 351 352 #endif /* _KERNEL || _KMEMUSER */ 353 354 #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP) 355 356 /* 357 * Macros for manipulating sets of CPUs as a bitmap. Note that this 358 * bitmap may vary in size depending on the maximum CPU id a specific 359 * platform supports. This may be different than the number of CPUs 360 * the platform supports, since CPU ids can be sparse. We define two 361 * sets of macros; one for platforms where the maximum CPU id is less 362 * than the number of bits in a single word (32 in a 32-bit kernel, 363 * 64 in a 64-bit kernel), and one for platforms that require bitmaps 364 * of more than one word. 365 */ 366 367 #define CPUSET_WORDS BT_BITOUL(NCPU) 368 #define CPUSET_NOTINSET ((uint_t)-1) 369 370 #if CPUSET_WORDS > 1 371 372 typedef struct cpuset { 373 ulong_t cpub[CPUSET_WORDS]; 374 } cpuset_t; 375 376 /* 377 * Private functions for manipulating cpusets that do not fit in a 378 * single word. These should not be used directly; instead the 379 * CPUSET_* macros should be used so the code will be portable 380 * across different definitions of NCPU. 381 */ 382 extern void cpuset_all(cpuset_t *); 383 extern void cpuset_all_but(cpuset_t *, uint_t); 384 extern int cpuset_isnull(cpuset_t *); 385 extern int cpuset_cmp(cpuset_t *, cpuset_t *); 386 extern void cpuset_only(cpuset_t *, uint_t); 387 extern uint_t cpuset_find(cpuset_t *); 388 extern void cpuset_bounds(cpuset_t *, uint_t *, uint_t *); 389 390 #define CPUSET_ALL(set) cpuset_all(&(set)) 391 #define CPUSET_ALL_BUT(set, cpu) cpuset_all_but(&(set), cpu) 392 #define CPUSET_ONLY(set, cpu) cpuset_only(&(set), cpu) 393 #define CPU_IN_SET(set, cpu) BT_TEST((set).cpub, cpu) 394 #define CPUSET_ADD(set, cpu) BT_SET((set).cpub, cpu) 395 #define CPUSET_DEL(set, cpu) BT_CLEAR((set).cpub, cpu) 396 #define CPUSET_ISNULL(set) cpuset_isnull(&(set)) 397 #define CPUSET_ISEQUAL(set1, set2) cpuset_cmp(&(set1), &(set2)) 398 399 /* 400 * Find one CPU in the cpuset. 401 * Sets "cpu" to the id of the found CPU, or CPUSET_NOTINSET if no cpu 402 * could be found. (i.e. empty set) 403 */ 404 #define CPUSET_FIND(set, cpu) { \ 405 cpu = cpuset_find(&(set)); \ 406 } 407 408 /* 409 * Determine the smallest and largest CPU id in the set. Returns 410 * CPUSET_NOTINSET in smallest and largest when set is empty. 411 */ 412 #define CPUSET_BOUNDS(set, smallest, largest) { \ 413 cpuset_bounds(&(set), &(smallest), &(largest)); \ 414 } 415 416 /* 417 * Atomic cpuset operations 418 * These are safe to use for concurrent cpuset manipulations. 419 * "xdel" and "xadd" are exclusive operations, that set "result" to "0" 420 * if the add or del was successful, or "-1" if not successful. 421 * (e.g. attempting to add a cpu to a cpuset that's already there, or 422 * deleting a cpu that's not in the cpuset) 423 */ 424 425 #define CPUSET_ATOMIC_DEL(set, cpu) BT_ATOMIC_CLEAR((set).cpub, (cpu)) 426 #define CPUSET_ATOMIC_ADD(set, cpu) BT_ATOMIC_SET((set).cpub, (cpu)) 427 428 #define CPUSET_ATOMIC_XADD(set, cpu, result) \ 429 BT_ATOMIC_SET_EXCL((set).cpub, cpu, result) 430 431 #define CPUSET_ATOMIC_XDEL(set, cpu, result) \ 432 BT_ATOMIC_CLEAR_EXCL((set).cpub, cpu, result) 433 434 435 #define CPUSET_OR(set1, set2) { \ 436 int _i; \ 437 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 438 (set1).cpub[_i] |= (set2).cpub[_i]; \ 439 } 440 441 #define CPUSET_AND(set1, set2) { \ 442 int _i; \ 443 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 444 (set1).cpub[_i] &= (set2).cpub[_i]; \ 445 } 446 447 #define CPUSET_ZERO(set) { \ 448 int _i; \ 449 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 450 (set).cpub[_i] = 0; \ 451 } 452 453 #elif CPUSET_WORDS == 1 454 455 typedef ulong_t cpuset_t; /* a set of CPUs */ 456 457 #define CPUSET(cpu) (1UL << (cpu)) 458 459 #define CPUSET_ALL(set) ((void)((set) = ~0UL)) 460 #define CPUSET_ALL_BUT(set, cpu) ((void)((set) = ~CPUSET(cpu))) 461 #define CPUSET_ONLY(set, cpu) ((void)((set) = CPUSET(cpu))) 462 #define CPU_IN_SET(set, cpu) ((set) & CPUSET(cpu)) 463 #define CPUSET_ADD(set, cpu) ((void)((set) |= CPUSET(cpu))) 464 #define CPUSET_DEL(set, cpu) ((void)((set) &= ~CPUSET(cpu))) 465 #define CPUSET_ISNULL(set) ((set) == 0) 466 #define CPUSET_ISEQUAL(set1, set2) ((set1) == (set2)) 467 #define CPUSET_OR(set1, set2) ((void)((set1) |= (set2))) 468 #define CPUSET_AND(set1, set2) ((void)((set1) &= (set2))) 469 #define CPUSET_ZERO(set) ((void)((set) = 0)) 470 471 #define CPUSET_FIND(set, cpu) { \ 472 cpu = (uint_t)(lowbit(set) - 1); \ 473 } 474 475 #define CPUSET_BOUNDS(set, smallest, largest) { \ 476 smallest = (uint_t)(lowbit(set) - 1); \ 477 largest = (uint_t)(highbit(set) - 1); \ 478 } 479 480 #define CPUSET_ATOMIC_DEL(set, cpu) atomic_and_long(&(set), ~CPUSET(cpu)) 481 #define CPUSET_ATOMIC_ADD(set, cpu) atomic_or_long(&(set), CPUSET(cpu)) 482 483 #define CPUSET_ATOMIC_XADD(set, cpu, result) \ 484 { result = atomic_set_long_excl(&(set), (cpu)); } 485 486 #define CPUSET_ATOMIC_XDEL(set, cpu, result) \ 487 { result = atomic_clear_long_excl(&(set), (cpu)); } 488 489 #else /* CPUSET_WORDS <= 0 */ 490 491 #error NCPU is undefined or invalid 492 493 #endif /* CPUSET_WORDS */ 494 495 extern cpuset_t cpu_seqid_inuse; 496 497 #endif /* (_KERNEL || _KMEMUSER) && _MACHDEP */ 498 499 #define CPU_CPR_OFFLINE 0x0 500 #define CPU_CPR_ONLINE 0x1 501 #define CPU_CPR_IS_OFFLINE(cpu) (((cpu)->cpu_cpr_flags & CPU_CPR_ONLINE) == 0) 502 #define CPU_SET_CPR_FLAGS(cpu, flag) ((cpu)->cpu_cpr_flags |= flag) 503 504 #if defined(_KERNEL) || defined(_KMEMUSER) 505 506 extern struct cpu *cpu[]; /* indexed by CPU number */ 507 extern cpu_t *cpu_list; /* list of CPUs */ 508 extern int ncpus; /* number of CPUs present */ 509 extern int ncpus_online; /* number of CPUs not quiesced */ 510 extern int max_ncpus; /* max present before ncpus is known */ 511 extern int boot_max_ncpus; /* like max_ncpus but for real */ 512 extern processorid_t max_cpuid; /* maximum CPU number */ 513 extern struct cpu *cpu_inmotion; /* offline or partition move target */ 514 extern cpu_t *clock_cpu_list; 515 516 #if defined(__i386) || defined(__amd64) 517 extern struct cpu *curcpup(void); 518 #define CPU (curcpup()) /* Pointer to current CPU */ 519 #else 520 #define CPU (curthread->t_cpu) /* Pointer to current CPU */ 521 #endif 522 523 /* 524 * CPU_CURRENT indicates to thread_affinity_set to use CPU->cpu_id 525 * as the target and to grab cpu_lock instead of requiring the caller 526 * to grab it. 527 */ 528 #define CPU_CURRENT -3 529 530 /* 531 * Per-CPU statistics 532 * 533 * cpu_stats_t contains numerous system and VM-related statistics, in the form 534 * of gauges or monotonically-increasing event occurrence counts. 535 */ 536 537 #define CPU_STATS_ENTER_K() kpreempt_disable() 538 #define CPU_STATS_EXIT_K() kpreempt_enable() 539 540 #define CPU_STATS_ADD_K(class, stat, amount) \ 541 { kpreempt_disable(); /* keep from switching CPUs */\ 542 CPU_STATS_ADDQ(CPU, class, stat, amount); \ 543 kpreempt_enable(); \ 544 } 545 546 #define CPU_STATS_ADDQ(cp, class, stat, amount) { \ 547 extern void __dtrace_probe___cpu_##class##info_##stat(uint_t, \ 548 uint64_t *, cpu_t *); \ 549 uint64_t *stataddr = &((cp)->cpu_stats.class.stat); \ 550 __dtrace_probe___cpu_##class##info_##stat((amount), \ 551 stataddr, cp); \ 552 *(stataddr) += (amount); \ 553 } 554 555 #define CPU_STATS(cp, stat) \ 556 ((cp)->cpu_stats.stat) 557 558 #endif /* _KERNEL || _KMEMUSER */ 559 560 /* 561 * CPU support routines. 562 */ 563 #if defined(_KERNEL) && defined(__STDC__) /* not for genassym.c */ 564 565 struct zone; 566 567 void cpu_list_init(cpu_t *); 568 void cpu_add_unit(cpu_t *); 569 void cpu_del_unit(int cpuid); 570 void cpu_add_active(cpu_t *); 571 void cpu_kstat_init(cpu_t *); 572 void cpu_visibility_add(cpu_t *, struct zone *); 573 void cpu_visibility_remove(cpu_t *, struct zone *); 574 void cpu_visibility_configure(cpu_t *, struct zone *); 575 void cpu_visibility_unconfigure(cpu_t *, struct zone *); 576 void cpu_visibility_online(cpu_t *, struct zone *); 577 void cpu_visibility_offline(cpu_t *, struct zone *); 578 void cpu_create_intrstat(cpu_t *); 579 void cpu_delete_intrstat(cpu_t *); 580 int cpu_kstat_intrstat_update(kstat_t *, int); 581 void cpu_intr_swtch_enter(kthread_t *); 582 void cpu_intr_swtch_exit(kthread_t *); 583 584 void mbox_lock_init(void); /* initialize cross-call locks */ 585 void mbox_init(int cpun); /* initialize cross-calls */ 586 void poke_cpu(int cpun); /* interrupt another CPU (to preempt) */ 587 588 /* 589 * values for safe_list. Pause state that CPUs are in. 590 */ 591 #define PAUSE_IDLE 0 /* normal state */ 592 #define PAUSE_READY 1 /* paused thread ready to spl */ 593 #define PAUSE_WAIT 2 /* paused thread is spl-ed high */ 594 #define PAUSE_DIE 3 /* tell pause thread to leave */ 595 #define PAUSE_DEAD 4 /* pause thread has left */ 596 597 void mach_cpu_pause(volatile char *); 598 599 void pause_cpus(cpu_t *off_cp); 600 void start_cpus(void); 601 int cpus_paused(void); 602 603 void cpu_pause_init(void); 604 cpu_t *cpu_get(processorid_t cpun); /* get the CPU struct associated */ 605 606 int cpu_online(cpu_t *cp); /* take cpu online */ 607 int cpu_offline(cpu_t *cp, int flags); /* take cpu offline */ 608 int cpu_spare(cpu_t *cp, int flags); /* take cpu to spare */ 609 int cpu_faulted(cpu_t *cp, int flags); /* take cpu to faulted */ 610 int cpu_poweron(cpu_t *cp); /* take powered-off cpu to offline */ 611 int cpu_poweroff(cpu_t *cp); /* take offline cpu to powered-off */ 612 613 cpu_t *cpu_intr_next(cpu_t *cp); /* get next online CPU taking intrs */ 614 int cpu_intr_count(cpu_t *cp); /* count # of CPUs handling intrs */ 615 int cpu_intr_on(cpu_t *cp); /* CPU taking I/O interrupts? */ 616 void cpu_intr_enable(cpu_t *cp); /* enable I/O interrupts */ 617 int cpu_intr_disable(cpu_t *cp); /* disable I/O interrupts */ 618 void cpu_intr_alloc(cpu_t *cp, int n); /* allocate interrupt threads */ 619 620 /* 621 * Routines for checking CPU states. 622 */ 623 int cpu_is_online(cpu_t *); /* check if CPU is online */ 624 int cpu_is_nointr(cpu_t *); /* check if CPU can service intrs */ 625 int cpu_is_active(cpu_t *); /* check if CPU can run threads */ 626 int cpu_is_offline(cpu_t *); /* check if CPU is offline */ 627 int cpu_is_poweredoff(cpu_t *); /* check if CPU is powered off */ 628 629 int cpu_flagged_online(cpu_flag_t); /* flags show CPU is online */ 630 int cpu_flagged_nointr(cpu_flag_t); /* flags show CPU not handling intrs */ 631 int cpu_flagged_active(cpu_flag_t); /* flags show CPU scheduling threads */ 632 int cpu_flagged_offline(cpu_flag_t); /* flags show CPU is offline */ 633 int cpu_flagged_poweredoff(cpu_flag_t); /* flags show CPU is powered off */ 634 635 /* 636 * The processor_info(2) state of a CPU is a simplified representation suitable 637 * for use by an application program. Kernel subsystems should utilize the 638 * internal per-CPU state as given by the cpu_flags member of the cpu structure, 639 * as this information may include platform- or architecture-specific state 640 * critical to a subsystem's disposition of a particular CPU. 641 */ 642 void cpu_set_state(cpu_t *); /* record/timestamp current state */ 643 int cpu_get_state(cpu_t *); /* get current cpu state */ 644 const char *cpu_get_state_str(cpu_t *); /* get current cpu state as string */ 645 646 int cpu_configure(int); 647 int cpu_unconfigure(int); 648 void cpu_destroy_bound_threads(cpu_t *cp); 649 650 extern int cpu_bind_thread(kthread_t *tp, processorid_t bind, 651 processorid_t *obind, int *error); 652 extern int cpu_unbind(processorid_t cpu_id); 653 extern void thread_affinity_set(kthread_t *t, int cpu_id); 654 extern void thread_affinity_clear(kthread_t *t); 655 extern void affinity_set(int cpu_id); 656 extern void affinity_clear(void); 657 extern void init_cpu_mstate(struct cpu *, int); 658 extern void term_cpu_mstate(struct cpu *); 659 extern void new_cpu_mstate(int, hrtime_t); 660 extern void get_cpu_mstate(struct cpu *, hrtime_t *); 661 extern void thread_nomigrate(void); 662 extern void thread_allowmigrate(void); 663 extern void weakbinding_stop(void); 664 extern void weakbinding_start(void); 665 666 /* 667 * The following routines affect the CPUs participation in interrupt processing, 668 * if that is applicable on the architecture. This only affects interrupts 669 * which aren't directed at the processor (not cross calls). 670 * 671 * cpu_disable_intr returns non-zero if interrupts were previously enabled. 672 */ 673 int cpu_disable_intr(struct cpu *cp); /* stop issuing interrupts to cpu */ 674 void cpu_enable_intr(struct cpu *cp); /* start issuing interrupts to cpu */ 675 676 /* 677 * The mutex cpu_lock protects cpu_flags for all CPUs, as well as the ncpus 678 * and ncpus_online counts. 679 */ 680 extern kmutex_t cpu_lock; /* lock protecting CPU data */ 681 682 typedef enum { 683 CPU_INIT, 684 CPU_CONFIG, 685 CPU_UNCONFIG, 686 CPU_ON, 687 CPU_OFF, 688 CPU_CPUPART_IN, 689 CPU_CPUPART_OUT 690 } cpu_setup_t; 691 692 typedef int cpu_setup_func_t(cpu_setup_t, int, void *); 693 694 /* 695 * Routines used to register interest in cpu's being added to or removed 696 * from the system. 697 */ 698 extern void register_cpu_setup_func(cpu_setup_func_t *, void *); 699 extern void unregister_cpu_setup_func(cpu_setup_func_t *, void *); 700 extern void cpu_state_change_notify(int, cpu_setup_t); 701 702 /* 703 * Create various strings that describe the given CPU for the 704 * processor_info system call and configuration-related kstats. 705 */ 706 #define CPU_IDSTRLEN 100 707 708 extern void init_cpu_info(struct cpu *); 709 extern void cpu_vm_data_init(struct cpu *); 710 extern void cpu_vm_data_destroy(struct cpu *); 711 712 #endif /* _KERNEL */ 713 714 #ifdef __cplusplus 715 } 716 #endif 717 718 #endif /* _SYS_CPUVAR_H */ 719