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 uint_t cpu_rotor; /* for cheap pseudo-random numbers */ 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 /* 267 * CPU_PSEUDO_RANDOM() returns a per CPU value that changes each time one 268 * looks at it. It's meant as a cheap mechanism to be incorporated in routines 269 * wanting to avoid biasing, but where true randomness isn't needed (just 270 * something that changes). 271 */ 272 #define CPU_PSEUDO_RANDOM() (CPU->cpu_rotor++) 273 274 #if defined(_KERNEL) || defined(_KMEMUSER) 275 276 #define INTR_STACK_SIZE MAX(DEFAULTSTKSZ, PAGESIZE) 277 278 /* MEMBERS PROTECTED BY "atomicity": cpu_flags */ 279 280 /* 281 * Flags in the CPU structure. 282 * 283 * These are protected by cpu_lock (except during creation). 284 * 285 * Offlined-CPUs have three stages of being offline: 286 * 287 * CPU_ENABLE indicates that the CPU is participating in I/O interrupts 288 * that can be directed at a number of different CPUs. If CPU_ENABLE 289 * is off, the CPU will not be given interrupts that can be sent elsewhere, 290 * but will still get interrupts from devices associated with that CPU only, 291 * and from other CPUs. 292 * 293 * CPU_OFFLINE indicates that the dispatcher should not allow any threads 294 * other than interrupt threads to run on that CPU. A CPU will not have 295 * CPU_OFFLINE set if there are any bound threads (besides interrupts). 296 * 297 * CPU_QUIESCED is set if p_offline was able to completely turn idle the 298 * CPU and it will not have to run interrupt threads. In this case it'll 299 * stay in the idle loop until CPU_QUIESCED is turned off. 300 * 301 * CPU_FROZEN is used only by CPR to mark CPUs that have been successfully 302 * suspended (in the suspend path), or have yet to be resumed (in the resume 303 * case). 304 * 305 * On some platforms CPUs can be individually powered off. 306 * The following flags are set for powered off CPUs: CPU_QUIESCED, 307 * CPU_OFFLINE, and CPU_POWEROFF. The following flags are cleared: 308 * CPU_RUNNING, CPU_READY, CPU_EXISTS, and CPU_ENABLE. 309 */ 310 #define CPU_RUNNING 0x001 /* CPU running */ 311 #define CPU_READY 0x002 /* CPU ready for cross-calls */ 312 #define CPU_QUIESCED 0x004 /* CPU will stay in idle */ 313 #define CPU_EXISTS 0x008 /* CPU is configured */ 314 #define CPU_ENABLE 0x010 /* CPU enabled for interrupts */ 315 #define CPU_OFFLINE 0x020 /* CPU offline via p_online */ 316 #define CPU_POWEROFF 0x040 /* CPU is powered off */ 317 #define CPU_FROZEN 0x080 /* CPU is frozen via CPR suspend */ 318 #define CPU_SPARE 0x100 /* CPU offline available for use */ 319 #define CPU_FAULTED 0x200 /* CPU offline diagnosed faulty */ 320 321 #define FMT_CPU_FLAGS \ 322 "\20\12fault\11spare\10frozen" \ 323 "\7poweroff\6offline\5enable\4exist\3quiesced\2ready\1run" 324 325 #define CPU_ACTIVE(cpu) (((cpu)->cpu_flags & CPU_OFFLINE) == 0) 326 327 /* 328 * Flags for cpu_offline(), cpu_faulted(), and cpu_spare(). 329 */ 330 #define CPU_FORCED 0x0001 /* Force CPU offline */ 331 332 /* 333 * DTrace flags. 334 */ 335 #define CPU_DTRACE_NOFAULT 0x0001 /* Don't fault */ 336 #define CPU_DTRACE_DROP 0x0002 /* Drop this ECB */ 337 #define CPU_DTRACE_BADADDR 0x0004 /* DTrace fault: bad address */ 338 #define CPU_DTRACE_BADALIGN 0x0008 /* DTrace fault: bad alignment */ 339 #define CPU_DTRACE_DIVZERO 0x0010 /* DTrace fault: divide by zero */ 340 #define CPU_DTRACE_ILLOP 0x0020 /* DTrace fault: illegal operation */ 341 #define CPU_DTRACE_NOSCRATCH 0x0040 /* DTrace fault: out of scratch */ 342 #define CPU_DTRACE_KPRIV 0x0080 /* DTrace fault: bad kernel access */ 343 #define CPU_DTRACE_UPRIV 0x0100 /* DTrace fault: bad user access */ 344 #define CPU_DTRACE_TUPOFLOW 0x0200 /* DTrace fault: tuple stack overflow */ 345 #if defined(__sparc) 346 #define CPU_DTRACE_FAKERESTORE 0x0400 /* pid provider hint to getreg */ 347 #endif 348 #define CPU_DTRACE_ENTRY 0x0800 /* pid provider hint to ustack() */ 349 #define CPU_DTRACE_BADSTACK 0x1000 /* DTrace fault: bad stack */ 350 351 #define CPU_DTRACE_FAULT (CPU_DTRACE_BADADDR | CPU_DTRACE_BADALIGN | \ 352 CPU_DTRACE_DIVZERO | CPU_DTRACE_ILLOP | \ 353 CPU_DTRACE_NOSCRATCH | CPU_DTRACE_KPRIV | \ 354 CPU_DTRACE_UPRIV | CPU_DTRACE_TUPOFLOW | \ 355 CPU_DTRACE_BADSTACK) 356 #define CPU_DTRACE_ERROR (CPU_DTRACE_FAULT | CPU_DTRACE_DROP) 357 358 /* 359 * Dispatcher flags 360 * These flags must be changed only by the current CPU. 361 */ 362 #define CPU_DISP_DONTSTEAL 0x01 /* CPU undergoing context swtch */ 363 #define CPU_DISP_HALTED 0x02 /* CPU halted waiting for interrupt */ 364 365 366 #endif /* _KERNEL || _KMEMUSER */ 367 368 #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP) 369 370 /* 371 * Macros for manipulating sets of CPUs as a bitmap. Note that this 372 * bitmap may vary in size depending on the maximum CPU id a specific 373 * platform supports. This may be different than the number of CPUs 374 * the platform supports, since CPU ids can be sparse. We define two 375 * sets of macros; one for platforms where the maximum CPU id is less 376 * than the number of bits in a single word (32 in a 32-bit kernel, 377 * 64 in a 64-bit kernel), and one for platforms that require bitmaps 378 * of more than one word. 379 */ 380 381 #define CPUSET_WORDS BT_BITOUL(NCPU) 382 #define CPUSET_NOTINSET ((uint_t)-1) 383 384 #if CPUSET_WORDS > 1 385 386 typedef struct cpuset { 387 ulong_t cpub[CPUSET_WORDS]; 388 } cpuset_t; 389 390 /* 391 * Private functions for manipulating cpusets that do not fit in a 392 * single word. These should not be used directly; instead the 393 * CPUSET_* macros should be used so the code will be portable 394 * across different definitions of NCPU. 395 */ 396 extern void cpuset_all(cpuset_t *); 397 extern void cpuset_all_but(cpuset_t *, uint_t); 398 extern int cpuset_isnull(cpuset_t *); 399 extern int cpuset_cmp(cpuset_t *, cpuset_t *); 400 extern void cpuset_only(cpuset_t *, uint_t); 401 extern uint_t cpuset_find(cpuset_t *); 402 extern void cpuset_bounds(cpuset_t *, uint_t *, uint_t *); 403 404 #define CPUSET_ALL(set) cpuset_all(&(set)) 405 #define CPUSET_ALL_BUT(set, cpu) cpuset_all_but(&(set), cpu) 406 #define CPUSET_ONLY(set, cpu) cpuset_only(&(set), cpu) 407 #define CPU_IN_SET(set, cpu) BT_TEST((set).cpub, cpu) 408 #define CPUSET_ADD(set, cpu) BT_SET((set).cpub, cpu) 409 #define CPUSET_DEL(set, cpu) BT_CLEAR((set).cpub, cpu) 410 #define CPUSET_ISNULL(set) cpuset_isnull(&(set)) 411 #define CPUSET_ISEQUAL(set1, set2) cpuset_cmp(&(set1), &(set2)) 412 413 /* 414 * Find one CPU in the cpuset. 415 * Sets "cpu" to the id of the found CPU, or CPUSET_NOTINSET if no cpu 416 * could be found. (i.e. empty set) 417 */ 418 #define CPUSET_FIND(set, cpu) { \ 419 cpu = cpuset_find(&(set)); \ 420 } 421 422 /* 423 * Determine the smallest and largest CPU id in the set. Returns 424 * CPUSET_NOTINSET in smallest and largest when set is empty. 425 */ 426 #define CPUSET_BOUNDS(set, smallest, largest) { \ 427 cpuset_bounds(&(set), &(smallest), &(largest)); \ 428 } 429 430 /* 431 * Atomic cpuset operations 432 * These are safe to use for concurrent cpuset manipulations. 433 * "xdel" and "xadd" are exclusive operations, that set "result" to "0" 434 * if the add or del was successful, or "-1" if not successful. 435 * (e.g. attempting to add a cpu to a cpuset that's already there, or 436 * deleting a cpu that's not in the cpuset) 437 */ 438 439 #define CPUSET_ATOMIC_DEL(set, cpu) BT_ATOMIC_CLEAR((set).cpub, (cpu)) 440 #define CPUSET_ATOMIC_ADD(set, cpu) BT_ATOMIC_SET((set).cpub, (cpu)) 441 442 #define CPUSET_ATOMIC_XADD(set, cpu, result) \ 443 BT_ATOMIC_SET_EXCL((set).cpub, cpu, result) 444 445 #define CPUSET_ATOMIC_XDEL(set, cpu, result) \ 446 BT_ATOMIC_CLEAR_EXCL((set).cpub, cpu, result) 447 448 449 #define CPUSET_OR(set1, set2) { \ 450 int _i; \ 451 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 452 (set1).cpub[_i] |= (set2).cpub[_i]; \ 453 } 454 455 #define CPUSET_XOR(set1, set2) { \ 456 int _i; \ 457 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 458 (set1).cpub[_i] ^= (set2).cpub[_i]; \ 459 } 460 461 #define CPUSET_AND(set1, set2) { \ 462 int _i; \ 463 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 464 (set1).cpub[_i] &= (set2).cpub[_i]; \ 465 } 466 467 #define CPUSET_ZERO(set) { \ 468 int _i; \ 469 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 470 (set).cpub[_i] = 0; \ 471 } 472 473 #elif CPUSET_WORDS == 1 474 475 typedef ulong_t cpuset_t; /* a set of CPUs */ 476 477 #define CPUSET(cpu) (1UL << (cpu)) 478 479 #define CPUSET_ALL(set) ((void)((set) = ~0UL)) 480 #define CPUSET_ALL_BUT(set, cpu) ((void)((set) = ~CPUSET(cpu))) 481 #define CPUSET_ONLY(set, cpu) ((void)((set) = CPUSET(cpu))) 482 #define CPU_IN_SET(set, cpu) ((set) & CPUSET(cpu)) 483 #define CPUSET_ADD(set, cpu) ((void)((set) |= CPUSET(cpu))) 484 #define CPUSET_DEL(set, cpu) ((void)((set) &= ~CPUSET(cpu))) 485 #define CPUSET_ISNULL(set) ((set) == 0) 486 #define CPUSET_ISEQUAL(set1, set2) ((set1) == (set2)) 487 #define CPUSET_OR(set1, set2) ((void)((set1) |= (set2))) 488 #define CPUSET_XOR(set1, set2) ((void)((set1) ^= (set2))) 489 #define CPUSET_AND(set1, set2) ((void)((set1) &= (set2))) 490 #define CPUSET_ZERO(set) ((void)((set) = 0)) 491 492 #define CPUSET_FIND(set, cpu) { \ 493 cpu = (uint_t)(lowbit(set) - 1); \ 494 } 495 496 #define CPUSET_BOUNDS(set, smallest, largest) { \ 497 smallest = (uint_t)(lowbit(set) - 1); \ 498 largest = (uint_t)(highbit(set) - 1); \ 499 } 500 501 #define CPUSET_ATOMIC_DEL(set, cpu) atomic_and_long(&(set), ~CPUSET(cpu)) 502 #define CPUSET_ATOMIC_ADD(set, cpu) atomic_or_long(&(set), CPUSET(cpu)) 503 504 #define CPUSET_ATOMIC_XADD(set, cpu, result) \ 505 { result = atomic_set_long_excl(&(set), (cpu)); } 506 507 #define CPUSET_ATOMIC_XDEL(set, cpu, result) \ 508 { result = atomic_clear_long_excl(&(set), (cpu)); } 509 510 #else /* CPUSET_WORDS <= 0 */ 511 512 #error NCPU is undefined or invalid 513 514 #endif /* CPUSET_WORDS */ 515 516 extern cpuset_t cpu_seqid_inuse; 517 518 #endif /* (_KERNEL || _KMEMUSER) && _MACHDEP */ 519 520 #define CPU_CPR_OFFLINE 0x0 521 #define CPU_CPR_ONLINE 0x1 522 #define CPU_CPR_IS_OFFLINE(cpu) (((cpu)->cpu_cpr_flags & CPU_CPR_ONLINE) == 0) 523 #define CPU_CPR_IS_ONLINE(cpu) ((cpu)->cpu_cpr_flags & CPU_CPR_ONLINE) 524 #define CPU_SET_CPR_FLAGS(cpu, flag) ((cpu)->cpu_cpr_flags |= flag) 525 526 #if defined(_KERNEL) || defined(_KMEMUSER) 527 528 extern struct cpu *cpu[]; /* indexed by CPU number */ 529 extern struct cpu **cpu_seq; /* indexed by sequential CPU id */ 530 extern cpu_t *cpu_list; /* list of CPUs */ 531 extern cpu_t *cpu_active; /* list of active CPUs */ 532 extern int ncpus; /* number of CPUs present */ 533 extern int ncpus_online; /* number of CPUs not quiesced */ 534 extern int max_ncpus; /* max present before ncpus is known */ 535 extern int boot_max_ncpus; /* like max_ncpus but for real */ 536 extern int boot_ncpus; /* # cpus present @ boot */ 537 extern processorid_t max_cpuid; /* maximum CPU number */ 538 extern struct cpu *cpu_inmotion; /* offline or partition move target */ 539 extern cpu_t *clock_cpu_list; 540 541 #if defined(__i386) || defined(__amd64) 542 extern struct cpu *curcpup(void); 543 #define CPU (curcpup()) /* Pointer to current CPU */ 544 #else 545 #define CPU (curthread->t_cpu) /* Pointer to current CPU */ 546 #endif 547 548 /* 549 * CPU_CURRENT indicates to thread_affinity_set to use CPU->cpu_id 550 * as the target and to grab cpu_lock instead of requiring the caller 551 * to grab it. 552 */ 553 #define CPU_CURRENT -3 554 555 /* 556 * Per-CPU statistics 557 * 558 * cpu_stats_t contains numerous system and VM-related statistics, in the form 559 * of gauges or monotonically-increasing event occurrence counts. 560 */ 561 562 #define CPU_STATS_ENTER_K() kpreempt_disable() 563 #define CPU_STATS_EXIT_K() kpreempt_enable() 564 565 #define CPU_STATS_ADD_K(class, stat, amount) \ 566 { kpreempt_disable(); /* keep from switching CPUs */\ 567 CPU_STATS_ADDQ(CPU, class, stat, amount); \ 568 kpreempt_enable(); \ 569 } 570 571 #define CPU_STATS_ADDQ(cp, class, stat, amount) { \ 572 extern void __dtrace_probe___cpu_##class##info_##stat(uint_t, \ 573 uint64_t *, cpu_t *); \ 574 uint64_t *stataddr = &((cp)->cpu_stats.class.stat); \ 575 __dtrace_probe___cpu_##class##info_##stat((amount), \ 576 stataddr, cp); \ 577 *(stataddr) += (amount); \ 578 } 579 580 #define CPU_STATS(cp, stat) \ 581 ((cp)->cpu_stats.stat) 582 583 #endif /* _KERNEL || _KMEMUSER */ 584 585 /* 586 * CPU support routines. 587 */ 588 #if defined(_KERNEL) && defined(__STDC__) /* not for genassym.c */ 589 590 struct zone; 591 592 void cpu_list_init(cpu_t *); 593 void cpu_add_unit(cpu_t *); 594 void cpu_del_unit(int cpuid); 595 void cpu_add_active(cpu_t *); 596 void cpu_kstat_init(cpu_t *); 597 void cpu_visibility_add(cpu_t *, struct zone *); 598 void cpu_visibility_remove(cpu_t *, struct zone *); 599 void cpu_visibility_configure(cpu_t *, struct zone *); 600 void cpu_visibility_unconfigure(cpu_t *, struct zone *); 601 void cpu_visibility_online(cpu_t *, struct zone *); 602 void cpu_visibility_offline(cpu_t *, struct zone *); 603 void cpu_create_intrstat(cpu_t *); 604 void cpu_delete_intrstat(cpu_t *); 605 int cpu_kstat_intrstat_update(kstat_t *, int); 606 void cpu_intr_swtch_enter(kthread_t *); 607 void cpu_intr_swtch_exit(kthread_t *); 608 609 void mbox_lock_init(void); /* initialize cross-call locks */ 610 void mbox_init(int cpun); /* initialize cross-calls */ 611 void poke_cpu(int cpun); /* interrupt another CPU (to preempt) */ 612 613 /* 614 * values for safe_list. Pause state that CPUs are in. 615 */ 616 #define PAUSE_IDLE 0 /* normal state */ 617 #define PAUSE_READY 1 /* paused thread ready to spl */ 618 #define PAUSE_WAIT 2 /* paused thread is spl-ed high */ 619 #define PAUSE_DIE 3 /* tell pause thread to leave */ 620 #define PAUSE_DEAD 4 /* pause thread has left */ 621 622 void mach_cpu_pause(volatile char *); 623 624 void pause_cpus(cpu_t *off_cp); 625 void start_cpus(void); 626 int cpus_paused(void); 627 628 void cpu_pause_init(void); 629 cpu_t *cpu_get(processorid_t cpun); /* get the CPU struct associated */ 630 631 int cpu_online(cpu_t *cp); /* take cpu online */ 632 int cpu_offline(cpu_t *cp, int flags); /* take cpu offline */ 633 int cpu_spare(cpu_t *cp, int flags); /* take cpu to spare */ 634 int cpu_faulted(cpu_t *cp, int flags); /* take cpu to faulted */ 635 int cpu_poweron(cpu_t *cp); /* take powered-off cpu to offline */ 636 int cpu_poweroff(cpu_t *cp); /* take offline cpu to powered-off */ 637 638 cpu_t *cpu_intr_next(cpu_t *cp); /* get next online CPU taking intrs */ 639 int cpu_intr_count(cpu_t *cp); /* count # of CPUs handling intrs */ 640 int cpu_intr_on(cpu_t *cp); /* CPU taking I/O interrupts? */ 641 void cpu_intr_enable(cpu_t *cp); /* enable I/O interrupts */ 642 int cpu_intr_disable(cpu_t *cp); /* disable I/O interrupts */ 643 void cpu_intr_alloc(cpu_t *cp, int n); /* allocate interrupt threads */ 644 645 /* 646 * Routines for checking CPU states. 647 */ 648 int cpu_is_online(cpu_t *); /* check if CPU is online */ 649 int cpu_is_nointr(cpu_t *); /* check if CPU can service intrs */ 650 int cpu_is_active(cpu_t *); /* check if CPU can run threads */ 651 int cpu_is_offline(cpu_t *); /* check if CPU is offline */ 652 int cpu_is_poweredoff(cpu_t *); /* check if CPU is powered off */ 653 654 int cpu_flagged_online(cpu_flag_t); /* flags show CPU is online */ 655 int cpu_flagged_nointr(cpu_flag_t); /* flags show CPU not handling intrs */ 656 int cpu_flagged_active(cpu_flag_t); /* flags show CPU scheduling threads */ 657 int cpu_flagged_offline(cpu_flag_t); /* flags show CPU is offline */ 658 int cpu_flagged_poweredoff(cpu_flag_t); /* flags show CPU is powered off */ 659 660 /* 661 * The processor_info(2) state of a CPU is a simplified representation suitable 662 * for use by an application program. Kernel subsystems should utilize the 663 * internal per-CPU state as given by the cpu_flags member of the cpu structure, 664 * as this information may include platform- or architecture-specific state 665 * critical to a subsystem's disposition of a particular CPU. 666 */ 667 void cpu_set_state(cpu_t *); /* record/timestamp current state */ 668 int cpu_get_state(cpu_t *); /* get current cpu state */ 669 const char *cpu_get_state_str(cpu_t *); /* get current cpu state as string */ 670 671 672 void cpu_set_supp_freqs(cpu_t *, const char *); /* set the CPU supported */ 673 /* frequencies */ 674 675 int cpu_configure(int); 676 int cpu_unconfigure(int); 677 void cpu_destroy_bound_threads(cpu_t *cp); 678 679 extern int cpu_bind_thread(kthread_t *tp, processorid_t bind, 680 processorid_t *obind, int *error); 681 extern int cpu_unbind(processorid_t cpu_id, boolean_t force); 682 extern void thread_affinity_set(kthread_t *t, int cpu_id); 683 extern void thread_affinity_clear(kthread_t *t); 684 extern void affinity_set(int cpu_id); 685 extern void affinity_clear(void); 686 extern void init_cpu_mstate(struct cpu *, int); 687 extern void term_cpu_mstate(struct cpu *); 688 extern void new_cpu_mstate(int, hrtime_t); 689 extern void get_cpu_mstate(struct cpu *, hrtime_t *); 690 extern void thread_nomigrate(void); 691 extern void thread_allowmigrate(void); 692 extern void weakbinding_stop(void); 693 extern void weakbinding_start(void); 694 695 /* 696 * The following routines affect the CPUs participation in interrupt processing, 697 * if that is applicable on the architecture. This only affects interrupts 698 * which aren't directed at the processor (not cross calls). 699 * 700 * cpu_disable_intr returns non-zero if interrupts were previously enabled. 701 */ 702 int cpu_disable_intr(struct cpu *cp); /* stop issuing interrupts to cpu */ 703 void cpu_enable_intr(struct cpu *cp); /* start issuing interrupts to cpu */ 704 705 /* 706 * The mutex cpu_lock protects cpu_flags for all CPUs, as well as the ncpus 707 * and ncpus_online counts. 708 */ 709 extern kmutex_t cpu_lock; /* lock protecting CPU data */ 710 711 typedef enum { 712 CPU_INIT, 713 CPU_CONFIG, 714 CPU_UNCONFIG, 715 CPU_ON, 716 CPU_OFF, 717 CPU_CPUPART_IN, 718 CPU_CPUPART_OUT 719 } cpu_setup_t; 720 721 typedef int cpu_setup_func_t(cpu_setup_t, int, void *); 722 723 /* 724 * Routines used to register interest in cpu's being added to or removed 725 * from the system. 726 */ 727 extern void register_cpu_setup_func(cpu_setup_func_t *, void *); 728 extern void unregister_cpu_setup_func(cpu_setup_func_t *, void *); 729 extern void cpu_state_change_notify(int, cpu_setup_t); 730 731 /* 732 * Create various strings that describe the given CPU for the 733 * processor_info system call and configuration-related kstats. 734 */ 735 #define CPU_IDSTRLEN 100 736 737 extern void init_cpu_info(struct cpu *); 738 extern void populate_idstr(struct cpu *); 739 extern void cpu_vm_data_init(struct cpu *); 740 extern void cpu_vm_data_destroy(struct cpu *); 741 742 #endif /* _KERNEL */ 743 744 #ifdef __cplusplus 745 } 746 #endif 747 748 #endif /* _SYS_CPUVAR_H */ 749