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 #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 * Interrupt load factor used by dispatcher & softcall 218 */ 219 hrtime_t cpu_intrlast; /* total interrupt time (nsec) */ 220 int cpu_intrload; /* interrupt load factor (0-99%) */ 221 222 /* 223 * New members must be added /before/ this member, as the CTF tools 224 * rely on this being the last field before cpu_m, so they can 225 * correctly calculate the offset when synthetically adding the cpu_m 226 * member in objects that do not have it. This fixup is required for 227 * uniquification to work correctly. 228 */ 229 uintptr_t cpu_m_pad; 230 231 #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP) 232 struct machcpu cpu_m; /* per architecture info */ 233 #endif 234 } cpu_t; 235 236 /* 237 * The cpu_core structure consists of per-CPU state available in any context. 238 * On some architectures, this may mean that the page(s) containing the 239 * NCPU-sized array of cpu_core structures must be locked in the TLB -- it 240 * is up to the platform to assure that this is performed properly. Note that 241 * the structure is sized to avoid false sharing. 242 */ 243 #define CPUC_SIZE (sizeof (uint16_t) + sizeof (uintptr_t) + \ 244 sizeof (kmutex_t)) 245 #define CPUC_PADSIZE CPU_CACHE_COHERENCE_SIZE - CPUC_SIZE 246 247 typedef struct cpu_core { 248 uint16_t cpuc_dtrace_flags; /* DTrace flags */ 249 uint8_t cpuc_pad[CPUC_PADSIZE]; /* padding */ 250 uintptr_t cpuc_dtrace_illval; /* DTrace illegal value */ 251 kmutex_t cpuc_pid_lock; /* DTrace pid provider lock */ 252 } cpu_core_t; 253 254 #ifdef _KERNEL 255 extern cpu_core_t cpu_core[]; 256 #endif /* _KERNEL */ 257 258 /* 259 * CPU_ON_INTR() macro. Returns non-zero if currently on interrupt stack. 260 * Note that this isn't a test for a high PIL. For example, cpu_intr_actv 261 * does not get updated when we go through sys_trap from TL>0 at high PIL. 262 * getpil() should be used instead to check for PIL levels. 263 */ 264 #define CPU_ON_INTR(cpup) ((cpup)->cpu_intr_actv >> (LOCK_LEVEL + 1)) 265 266 #if defined(_KERNEL) || defined(_KMEMUSER) 267 268 #define INTR_STACK_SIZE MAX(DEFAULTSTKSZ, PAGESIZE) 269 270 /* MEMBERS PROTECTED BY "atomicity": cpu_flags */ 271 272 /* 273 * Flags in the CPU structure. 274 * 275 * These are protected by cpu_lock (except during creation). 276 * 277 * Offlined-CPUs have three stages of being offline: 278 * 279 * CPU_ENABLE indicates that the CPU is participating in I/O interrupts 280 * that can be directed at a number of different CPUs. If CPU_ENABLE 281 * is off, the CPU will not be given interrupts that can be sent elsewhere, 282 * but will still get interrupts from devices associated with that CPU only, 283 * and from other CPUs. 284 * 285 * CPU_OFFLINE indicates that the dispatcher should not allow any threads 286 * other than interrupt threads to run on that CPU. A CPU will not have 287 * CPU_OFFLINE set if there are any bound threads (besides interrupts). 288 * 289 * CPU_QUIESCED is set if p_offline was able to completely turn idle the 290 * CPU and it will not have to run interrupt threads. In this case it'll 291 * stay in the idle loop until CPU_QUIESCED is turned off. 292 * 293 * CPU_FROZEN is used only by CPR to mark CPUs that have been successfully 294 * suspended (in the suspend path), or have yet to be resumed (in the resume 295 * case). 296 * 297 * On some platforms CPUs can be individually powered off. 298 * The following flags are set for powered off CPUs: CPU_QUIESCED, 299 * CPU_OFFLINE, and CPU_POWEROFF. The following flags are cleared: 300 * CPU_RUNNING, CPU_READY, CPU_EXISTS, and CPU_ENABLE. 301 */ 302 #define CPU_RUNNING 0x001 /* CPU running */ 303 #define CPU_READY 0x002 /* CPU ready for cross-calls */ 304 #define CPU_QUIESCED 0x004 /* CPU will stay in idle */ 305 #define CPU_EXISTS 0x008 /* CPU is configured */ 306 #define CPU_ENABLE 0x010 /* CPU enabled for interrupts */ 307 #define CPU_OFFLINE 0x020 /* CPU offline via p_online */ 308 #define CPU_POWEROFF 0x040 /* CPU is powered off */ 309 #define CPU_FROZEN 0x080 /* CPU is frozen via CPR suspend */ 310 #define CPU_SPARE 0x100 /* CPU offline available for use */ 311 #define CPU_FAULTED 0x200 /* CPU offline diagnosed faulty */ 312 313 #define FMT_CPU_FLAGS \ 314 "\20\12fault\11spare\10frozen" \ 315 "\7poweroff\6offline\5enable\4exist\3quiesced\2ready\1run" 316 317 #define CPU_ACTIVE(cpu) (((cpu)->cpu_flags & CPU_OFFLINE) == 0) 318 319 /* 320 * Flags for cpu_offline(), cpu_faulted(), and cpu_spare(). 321 */ 322 #define CPU_FORCED 0x0001 /* Force CPU offline */ 323 324 /* 325 * DTrace flags. 326 */ 327 #define CPU_DTRACE_NOFAULT 0x0001 /* Don't fault */ 328 #define CPU_DTRACE_DROP 0x0002 /* Drop this ECB */ 329 #define CPU_DTRACE_BADADDR 0x0004 /* DTrace fault: bad address */ 330 #define CPU_DTRACE_BADALIGN 0x0008 /* DTrace fault: bad alignment */ 331 #define CPU_DTRACE_DIVZERO 0x0010 /* DTrace fault: divide by zero */ 332 #define CPU_DTRACE_ILLOP 0x0020 /* DTrace fault: illegal operation */ 333 #define CPU_DTRACE_NOSCRATCH 0x0040 /* DTrace fault: out of scratch */ 334 #define CPU_DTRACE_KPRIV 0x0080 /* DTrace fault: bad kernel access */ 335 #define CPU_DTRACE_UPRIV 0x0100 /* DTrace fault: bad user access */ 336 #define CPU_DTRACE_TUPOFLOW 0x0200 /* DTrace fault: tuple stack overflow */ 337 #if defined(__sparc) 338 #define CPU_DTRACE_FAKERESTORE 0x0400 /* pid provider hint to getreg */ 339 #endif 340 #define CPU_DTRACE_ENTRY 0x0800 /* pid provider hint to ustack() */ 341 #define CPU_DTRACE_BADSTACK 0x1000 /* DTrace fault: bad stack */ 342 343 #define CPU_DTRACE_FAULT (CPU_DTRACE_BADADDR | CPU_DTRACE_BADALIGN | \ 344 CPU_DTRACE_DIVZERO | CPU_DTRACE_ILLOP | \ 345 CPU_DTRACE_NOSCRATCH | CPU_DTRACE_KPRIV | \ 346 CPU_DTRACE_UPRIV | CPU_DTRACE_TUPOFLOW | \ 347 CPU_DTRACE_BADSTACK) 348 #define CPU_DTRACE_ERROR (CPU_DTRACE_FAULT | CPU_DTRACE_DROP) 349 350 /* 351 * Dispatcher flags 352 * These flags must be changed only by the current CPU. 353 */ 354 #define CPU_DISP_DONTSTEAL 0x01 /* CPU undergoing context swtch */ 355 #define CPU_DISP_HALTED 0x02 /* CPU halted waiting for interrupt */ 356 357 358 #endif /* _KERNEL || _KMEMUSER */ 359 360 #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP) 361 362 /* 363 * Macros for manipulating sets of CPUs as a bitmap. Note that this 364 * bitmap may vary in size depending on the maximum CPU id a specific 365 * platform supports. This may be different than the number of CPUs 366 * the platform supports, since CPU ids can be sparse. We define two 367 * sets of macros; one for platforms where the maximum CPU id is less 368 * than the number of bits in a single word (32 in a 32-bit kernel, 369 * 64 in a 64-bit kernel), and one for platforms that require bitmaps 370 * of more than one word. 371 */ 372 373 #define CPUSET_WORDS BT_BITOUL(NCPU) 374 #define CPUSET_NOTINSET ((uint_t)-1) 375 376 #if CPUSET_WORDS > 1 377 378 typedef struct cpuset { 379 ulong_t cpub[CPUSET_WORDS]; 380 } cpuset_t; 381 382 /* 383 * Private functions for manipulating cpusets that do not fit in a 384 * single word. These should not be used directly; instead the 385 * CPUSET_* macros should be used so the code will be portable 386 * across different definitions of NCPU. 387 */ 388 extern void cpuset_all(cpuset_t *); 389 extern void cpuset_all_but(cpuset_t *, uint_t); 390 extern int cpuset_isnull(cpuset_t *); 391 extern int cpuset_cmp(cpuset_t *, cpuset_t *); 392 extern void cpuset_only(cpuset_t *, uint_t); 393 extern uint_t cpuset_find(cpuset_t *); 394 extern void cpuset_bounds(cpuset_t *, uint_t *, uint_t *); 395 396 #define CPUSET_ALL(set) cpuset_all(&(set)) 397 #define CPUSET_ALL_BUT(set, cpu) cpuset_all_but(&(set), cpu) 398 #define CPUSET_ONLY(set, cpu) cpuset_only(&(set), cpu) 399 #define CPU_IN_SET(set, cpu) BT_TEST((set).cpub, cpu) 400 #define CPUSET_ADD(set, cpu) BT_SET((set).cpub, cpu) 401 #define CPUSET_DEL(set, cpu) BT_CLEAR((set).cpub, cpu) 402 #define CPUSET_ISNULL(set) cpuset_isnull(&(set)) 403 #define CPUSET_ISEQUAL(set1, set2) cpuset_cmp(&(set1), &(set2)) 404 405 /* 406 * Find one CPU in the cpuset. 407 * Sets "cpu" to the id of the found CPU, or CPUSET_NOTINSET if no cpu 408 * could be found. (i.e. empty set) 409 */ 410 #define CPUSET_FIND(set, cpu) { \ 411 cpu = cpuset_find(&(set)); \ 412 } 413 414 /* 415 * Determine the smallest and largest CPU id in the set. Returns 416 * CPUSET_NOTINSET in smallest and largest when set is empty. 417 */ 418 #define CPUSET_BOUNDS(set, smallest, largest) { \ 419 cpuset_bounds(&(set), &(smallest), &(largest)); \ 420 } 421 422 /* 423 * Atomic cpuset operations 424 * These are safe to use for concurrent cpuset manipulations. 425 * "xdel" and "xadd" are exclusive operations, that set "result" to "0" 426 * if the add or del was successful, or "-1" if not successful. 427 * (e.g. attempting to add a cpu to a cpuset that's already there, or 428 * deleting a cpu that's not in the cpuset) 429 */ 430 431 #define CPUSET_ATOMIC_DEL(set, cpu) BT_ATOMIC_CLEAR((set).cpub, (cpu)) 432 #define CPUSET_ATOMIC_ADD(set, cpu) BT_ATOMIC_SET((set).cpub, (cpu)) 433 434 #define CPUSET_ATOMIC_XADD(set, cpu, result) \ 435 BT_ATOMIC_SET_EXCL((set).cpub, cpu, result) 436 437 #define CPUSET_ATOMIC_XDEL(set, cpu, result) \ 438 BT_ATOMIC_CLEAR_EXCL((set).cpub, cpu, result) 439 440 441 #define CPUSET_OR(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_XOR(set1, set2) { \ 448 int _i; \ 449 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 450 (set1).cpub[_i] ^= (set2).cpub[_i]; \ 451 } 452 453 #define CPUSET_AND(set1, set2) { \ 454 int _i; \ 455 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 456 (set1).cpub[_i] &= (set2).cpub[_i]; \ 457 } 458 459 #define CPUSET_ZERO(set) { \ 460 int _i; \ 461 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 462 (set).cpub[_i] = 0; \ 463 } 464 465 #elif CPUSET_WORDS == 1 466 467 typedef ulong_t cpuset_t; /* a set of CPUs */ 468 469 #define CPUSET(cpu) (1UL << (cpu)) 470 471 #define CPUSET_ALL(set) ((void)((set) = ~0UL)) 472 #define CPUSET_ALL_BUT(set, cpu) ((void)((set) = ~CPUSET(cpu))) 473 #define CPUSET_ONLY(set, cpu) ((void)((set) = CPUSET(cpu))) 474 #define CPU_IN_SET(set, cpu) ((set) & CPUSET(cpu)) 475 #define CPUSET_ADD(set, cpu) ((void)((set) |= CPUSET(cpu))) 476 #define CPUSET_DEL(set, cpu) ((void)((set) &= ~CPUSET(cpu))) 477 #define CPUSET_ISNULL(set) ((set) == 0) 478 #define CPUSET_ISEQUAL(set1, set2) ((set1) == (set2)) 479 #define CPUSET_OR(set1, set2) ((void)((set1) |= (set2))) 480 #define CPUSET_XOR(set1, set2) ((void)((set1) ^= (set2))) 481 #define CPUSET_AND(set1, set2) ((void)((set1) &= (set2))) 482 #define CPUSET_ZERO(set) ((void)((set) = 0)) 483 484 #define CPUSET_FIND(set, cpu) { \ 485 cpu = (uint_t)(lowbit(set) - 1); \ 486 } 487 488 #define CPUSET_BOUNDS(set, smallest, largest) { \ 489 smallest = (uint_t)(lowbit(set) - 1); \ 490 largest = (uint_t)(highbit(set) - 1); \ 491 } 492 493 #define CPUSET_ATOMIC_DEL(set, cpu) atomic_and_long(&(set), ~CPUSET(cpu)) 494 #define CPUSET_ATOMIC_ADD(set, cpu) atomic_or_long(&(set), CPUSET(cpu)) 495 496 #define CPUSET_ATOMIC_XADD(set, cpu, result) \ 497 { result = atomic_set_long_excl(&(set), (cpu)); } 498 499 #define CPUSET_ATOMIC_XDEL(set, cpu, result) \ 500 { result = atomic_clear_long_excl(&(set), (cpu)); } 501 502 #else /* CPUSET_WORDS <= 0 */ 503 504 #error NCPU is undefined or invalid 505 506 #endif /* CPUSET_WORDS */ 507 508 extern cpuset_t cpu_seqid_inuse; 509 510 #endif /* (_KERNEL || _KMEMUSER) && _MACHDEP */ 511 512 #define CPU_CPR_OFFLINE 0x0 513 #define CPU_CPR_ONLINE 0x1 514 #define CPU_CPR_IS_OFFLINE(cpu) (((cpu)->cpu_cpr_flags & CPU_CPR_ONLINE) == 0) 515 #define CPU_CPR_IS_ONLINE(cpu) ((cpu)->cpu_cpr_flags & CPU_CPR_ONLINE) 516 #define CPU_SET_CPR_FLAGS(cpu, flag) ((cpu)->cpu_cpr_flags |= flag) 517 518 #if defined(_KERNEL) || defined(_KMEMUSER) 519 520 extern struct cpu *cpu[]; /* indexed by CPU number */ 521 extern cpu_t *cpu_list; /* list of CPUs */ 522 extern cpu_t *cpu_active; /* list of active CPUs */ 523 extern int ncpus; /* number of CPUs present */ 524 extern int ncpus_online; /* number of CPUs not quiesced */ 525 extern int max_ncpus; /* max present before ncpus is known */ 526 extern int boot_max_ncpus; /* like max_ncpus but for real */ 527 extern int boot_ncpus; /* # cpus present @ boot */ 528 extern processorid_t max_cpuid; /* maximum CPU number */ 529 extern struct cpu *cpu_inmotion; /* offline or partition move target */ 530 extern cpu_t *clock_cpu_list; 531 532 #if defined(__i386) || defined(__amd64) 533 extern struct cpu *curcpup(void); 534 #define CPU (curcpup()) /* Pointer to current CPU */ 535 #else 536 #define CPU (curthread->t_cpu) /* Pointer to current CPU */ 537 #endif 538 539 /* 540 * CPU_CURRENT indicates to thread_affinity_set to use CPU->cpu_id 541 * as the target and to grab cpu_lock instead of requiring the caller 542 * to grab it. 543 */ 544 #define CPU_CURRENT -3 545 546 /* 547 * Per-CPU statistics 548 * 549 * cpu_stats_t contains numerous system and VM-related statistics, in the form 550 * of gauges or monotonically-increasing event occurrence counts. 551 */ 552 553 #define CPU_STATS_ENTER_K() kpreempt_disable() 554 #define CPU_STATS_EXIT_K() kpreempt_enable() 555 556 #define CPU_STATS_ADD_K(class, stat, amount) \ 557 { kpreempt_disable(); /* keep from switching CPUs */\ 558 CPU_STATS_ADDQ(CPU, class, stat, amount); \ 559 kpreempt_enable(); \ 560 } 561 562 #define CPU_STATS_ADDQ(cp, class, stat, amount) { \ 563 extern void __dtrace_probe___cpu_##class##info_##stat(uint_t, \ 564 uint64_t *, cpu_t *); \ 565 uint64_t *stataddr = &((cp)->cpu_stats.class.stat); \ 566 __dtrace_probe___cpu_##class##info_##stat((amount), \ 567 stataddr, cp); \ 568 *(stataddr) += (amount); \ 569 } 570 571 #define CPU_STATS(cp, stat) \ 572 ((cp)->cpu_stats.stat) 573 574 #endif /* _KERNEL || _KMEMUSER */ 575 576 /* 577 * CPU support routines. 578 */ 579 #if defined(_KERNEL) && defined(__STDC__) /* not for genassym.c */ 580 581 struct zone; 582 583 void cpu_list_init(cpu_t *); 584 void cpu_add_unit(cpu_t *); 585 void cpu_del_unit(int cpuid); 586 void cpu_add_active(cpu_t *); 587 void cpu_kstat_init(cpu_t *); 588 void cpu_visibility_add(cpu_t *, struct zone *); 589 void cpu_visibility_remove(cpu_t *, struct zone *); 590 void cpu_visibility_configure(cpu_t *, struct zone *); 591 void cpu_visibility_unconfigure(cpu_t *, struct zone *); 592 void cpu_visibility_online(cpu_t *, struct zone *); 593 void cpu_visibility_offline(cpu_t *, struct zone *); 594 void cpu_create_intrstat(cpu_t *); 595 void cpu_delete_intrstat(cpu_t *); 596 int cpu_kstat_intrstat_update(kstat_t *, int); 597 void cpu_intr_swtch_enter(kthread_t *); 598 void cpu_intr_swtch_exit(kthread_t *); 599 600 void mbox_lock_init(void); /* initialize cross-call locks */ 601 void mbox_init(int cpun); /* initialize cross-calls */ 602 void poke_cpu(int cpun); /* interrupt another CPU (to preempt) */ 603 604 /* 605 * values for safe_list. Pause state that CPUs are in. 606 */ 607 #define PAUSE_IDLE 0 /* normal state */ 608 #define PAUSE_READY 1 /* paused thread ready to spl */ 609 #define PAUSE_WAIT 2 /* paused thread is spl-ed high */ 610 #define PAUSE_DIE 3 /* tell pause thread to leave */ 611 #define PAUSE_DEAD 4 /* pause thread has left */ 612 613 void mach_cpu_pause(volatile char *); 614 615 void pause_cpus(cpu_t *off_cp); 616 void start_cpus(void); 617 int cpus_paused(void); 618 619 void cpu_pause_init(void); 620 cpu_t *cpu_get(processorid_t cpun); /* get the CPU struct associated */ 621 622 int cpu_online(cpu_t *cp); /* take cpu online */ 623 int cpu_offline(cpu_t *cp, int flags); /* take cpu offline */ 624 int cpu_spare(cpu_t *cp, int flags); /* take cpu to spare */ 625 int cpu_faulted(cpu_t *cp, int flags); /* take cpu to faulted */ 626 int cpu_poweron(cpu_t *cp); /* take powered-off cpu to offline */ 627 int cpu_poweroff(cpu_t *cp); /* take offline cpu to powered-off */ 628 629 cpu_t *cpu_intr_next(cpu_t *cp); /* get next online CPU taking intrs */ 630 int cpu_intr_count(cpu_t *cp); /* count # of CPUs handling intrs */ 631 int cpu_intr_on(cpu_t *cp); /* CPU taking I/O interrupts? */ 632 void cpu_intr_enable(cpu_t *cp); /* enable I/O interrupts */ 633 int cpu_intr_disable(cpu_t *cp); /* disable I/O interrupts */ 634 void cpu_intr_alloc(cpu_t *cp, int n); /* allocate interrupt threads */ 635 636 /* 637 * Routines for checking CPU states. 638 */ 639 int cpu_is_online(cpu_t *); /* check if CPU is online */ 640 int cpu_is_nointr(cpu_t *); /* check if CPU can service intrs */ 641 int cpu_is_active(cpu_t *); /* check if CPU can run threads */ 642 int cpu_is_offline(cpu_t *); /* check if CPU is offline */ 643 int cpu_is_poweredoff(cpu_t *); /* check if CPU is powered off */ 644 645 int cpu_flagged_online(cpu_flag_t); /* flags show CPU is online */ 646 int cpu_flagged_nointr(cpu_flag_t); /* flags show CPU not handling intrs */ 647 int cpu_flagged_active(cpu_flag_t); /* flags show CPU scheduling threads */ 648 int cpu_flagged_offline(cpu_flag_t); /* flags show CPU is offline */ 649 int cpu_flagged_poweredoff(cpu_flag_t); /* flags show CPU is powered off */ 650 651 /* 652 * The processor_info(2) state of a CPU is a simplified representation suitable 653 * for use by an application program. Kernel subsystems should utilize the 654 * internal per-CPU state as given by the cpu_flags member of the cpu structure, 655 * as this information may include platform- or architecture-specific state 656 * critical to a subsystem's disposition of a particular CPU. 657 */ 658 void cpu_set_state(cpu_t *); /* record/timestamp current state */ 659 int cpu_get_state(cpu_t *); /* get current cpu state */ 660 const char *cpu_get_state_str(cpu_t *); /* get current cpu state as string */ 661 662 663 void cpu_set_supp_freqs(cpu_t *, const char *); /* set the CPU supported */ 664 /* frequencies */ 665 666 int cpu_configure(int); 667 int cpu_unconfigure(int); 668 void cpu_destroy_bound_threads(cpu_t *cp); 669 670 extern int cpu_bind_thread(kthread_t *tp, processorid_t bind, 671 processorid_t *obind, int *error); 672 extern int cpu_unbind(processorid_t cpu_id, boolean_t force); 673 extern void thread_affinity_set(kthread_t *t, int cpu_id); 674 extern void thread_affinity_clear(kthread_t *t); 675 extern void affinity_set(int cpu_id); 676 extern void affinity_clear(void); 677 extern void init_cpu_mstate(struct cpu *, int); 678 extern void term_cpu_mstate(struct cpu *); 679 extern void new_cpu_mstate(int, hrtime_t); 680 extern void get_cpu_mstate(struct cpu *, hrtime_t *); 681 extern void thread_nomigrate(void); 682 extern void thread_allowmigrate(void); 683 extern void weakbinding_stop(void); 684 extern void weakbinding_start(void); 685 686 /* 687 * The following routines affect the CPUs participation in interrupt processing, 688 * if that is applicable on the architecture. This only affects interrupts 689 * which aren't directed at the processor (not cross calls). 690 * 691 * cpu_disable_intr returns non-zero if interrupts were previously enabled. 692 */ 693 int cpu_disable_intr(struct cpu *cp); /* stop issuing interrupts to cpu */ 694 void cpu_enable_intr(struct cpu *cp); /* start issuing interrupts to cpu */ 695 696 /* 697 * The mutex cpu_lock protects cpu_flags for all CPUs, as well as the ncpus 698 * and ncpus_online counts. 699 */ 700 extern kmutex_t cpu_lock; /* lock protecting CPU data */ 701 702 typedef enum { 703 CPU_INIT, 704 CPU_CONFIG, 705 CPU_UNCONFIG, 706 CPU_ON, 707 CPU_OFF, 708 CPU_CPUPART_IN, 709 CPU_CPUPART_OUT 710 } cpu_setup_t; 711 712 typedef int cpu_setup_func_t(cpu_setup_t, int, void *); 713 714 /* 715 * Routines used to register interest in cpu's being added to or removed 716 * from the system. 717 */ 718 extern void register_cpu_setup_func(cpu_setup_func_t *, void *); 719 extern void unregister_cpu_setup_func(cpu_setup_func_t *, void *); 720 extern void cpu_state_change_notify(int, cpu_setup_t); 721 722 /* 723 * Create various strings that describe the given CPU for the 724 * processor_info system call and configuration-related kstats. 725 */ 726 #define CPU_IDSTRLEN 100 727 728 extern void init_cpu_info(struct cpu *); 729 extern void cpu_vm_data_init(struct cpu *); 730 extern void cpu_vm_data_destroy(struct cpu *); 731 732 #endif /* _KERNEL */ 733 734 #ifdef __cplusplus 735 } 736 #endif 737 738 #endif /* _SYS_CPUVAR_H */ 739