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 2009 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 uintptr_t cpu_cpcprofile_pc; /* kernel PC in cpc interrupt */ 215 uintptr_t cpu_cpcprofile_upc; /* user PC in cpc interrupt */ 216 217 /* 218 * Interrupt load factor used by dispatcher & softcall 219 */ 220 hrtime_t cpu_intrlast; /* total interrupt time (nsec) */ 221 int cpu_intrload; /* interrupt load factor (0-99%) */ 222 223 uint_t cpu_rotor; /* for cheap pseudo-random numbers */ 224 225 /* 226 * New members must be added /before/ this member, as the CTF tools 227 * rely on this being the last field before cpu_m, so they can 228 * correctly calculate the offset when synthetically adding the cpu_m 229 * member in objects that do not have it. This fixup is required for 230 * uniquification to work correctly. 231 */ 232 uintptr_t cpu_m_pad; 233 234 #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP) 235 struct machcpu cpu_m; /* per architecture info */ 236 #endif 237 } cpu_t; 238 239 /* 240 * The cpu_core structure consists of per-CPU state available in any context. 241 * On some architectures, this may mean that the page(s) containing the 242 * NCPU-sized array of cpu_core structures must be locked in the TLB -- it 243 * is up to the platform to assure that this is performed properly. Note that 244 * the structure is sized to avoid false sharing. 245 */ 246 #define CPUC_SIZE (sizeof (uint16_t) + sizeof (uint8_t) + \ 247 sizeof (uintptr_t) + sizeof (kmutex_t)) 248 #define CPUC_PADSIZE CPU_CACHE_COHERENCE_SIZE - CPUC_SIZE 249 250 typedef struct cpu_core { 251 uint16_t cpuc_dtrace_flags; /* DTrace flags */ 252 uint8_t cpuc_dcpc_intr_state; /* DCPC provider intr state */ 253 uint8_t cpuc_pad[CPUC_PADSIZE]; /* padding */ 254 uintptr_t cpuc_dtrace_illval; /* DTrace illegal value */ 255 kmutex_t cpuc_pid_lock; /* DTrace pid provider lock */ 256 } cpu_core_t; 257 258 #ifdef _KERNEL 259 extern cpu_core_t cpu_core[]; 260 #endif /* _KERNEL */ 261 262 /* 263 * CPU_ON_INTR() macro. Returns non-zero if currently on interrupt stack. 264 * Note that this isn't a test for a high PIL. For example, cpu_intr_actv 265 * does not get updated when we go through sys_trap from TL>0 at high PIL. 266 * getpil() should be used instead to check for PIL levels. 267 */ 268 #define CPU_ON_INTR(cpup) ((cpup)->cpu_intr_actv >> (LOCK_LEVEL + 1)) 269 270 /* 271 * CPU_PSEUDO_RANDOM() returns a per CPU value that changes each time one 272 * looks at it. It's meant as a cheap mechanism to be incorporated in routines 273 * wanting to avoid biasing, but where true randomness isn't needed (just 274 * something that changes). 275 */ 276 #define CPU_PSEUDO_RANDOM() (CPU->cpu_rotor++) 277 278 #if defined(_KERNEL) || defined(_KMEMUSER) 279 280 #define INTR_STACK_SIZE MAX(DEFAULTSTKSZ, PAGESIZE) 281 282 /* MEMBERS PROTECTED BY "atomicity": cpu_flags */ 283 284 /* 285 * Flags in the CPU structure. 286 * 287 * These are protected by cpu_lock (except during creation). 288 * 289 * Offlined-CPUs have three stages of being offline: 290 * 291 * CPU_ENABLE indicates that the CPU is participating in I/O interrupts 292 * that can be directed at a number of different CPUs. If CPU_ENABLE 293 * is off, the CPU will not be given interrupts that can be sent elsewhere, 294 * but will still get interrupts from devices associated with that CPU only, 295 * and from other CPUs. 296 * 297 * CPU_OFFLINE indicates that the dispatcher should not allow any threads 298 * other than interrupt threads to run on that CPU. A CPU will not have 299 * CPU_OFFLINE set if there are any bound threads (besides interrupts). 300 * 301 * CPU_QUIESCED is set if p_offline was able to completely turn idle the 302 * CPU and it will not have to run interrupt threads. In this case it'll 303 * stay in the idle loop until CPU_QUIESCED is turned off. 304 * 305 * CPU_FROZEN is used only by CPR to mark CPUs that have been successfully 306 * suspended (in the suspend path), or have yet to be resumed (in the resume 307 * case). 308 * 309 * On some platforms CPUs can be individually powered off. 310 * The following flags are set for powered off CPUs: CPU_QUIESCED, 311 * CPU_OFFLINE, and CPU_POWEROFF. The following flags are cleared: 312 * CPU_RUNNING, CPU_READY, CPU_EXISTS, and CPU_ENABLE. 313 */ 314 #define CPU_RUNNING 0x001 /* CPU running */ 315 #define CPU_READY 0x002 /* CPU ready for cross-calls */ 316 #define CPU_QUIESCED 0x004 /* CPU will stay in idle */ 317 #define CPU_EXISTS 0x008 /* CPU is configured */ 318 #define CPU_ENABLE 0x010 /* CPU enabled for interrupts */ 319 #define CPU_OFFLINE 0x020 /* CPU offline via p_online */ 320 #define CPU_POWEROFF 0x040 /* CPU is powered off */ 321 #define CPU_FROZEN 0x080 /* CPU is frozen via CPR suspend */ 322 #define CPU_SPARE 0x100 /* CPU offline available for use */ 323 #define CPU_FAULTED 0x200 /* CPU offline diagnosed faulty */ 324 325 #define FMT_CPU_FLAGS \ 326 "\20\12fault\11spare\10frozen" \ 327 "\7poweroff\6offline\5enable\4exist\3quiesced\2ready\1run" 328 329 #define CPU_ACTIVE(cpu) (((cpu)->cpu_flags & CPU_OFFLINE) == 0) 330 331 /* 332 * Flags for cpu_offline(), cpu_faulted(), and cpu_spare(). 333 */ 334 #define CPU_FORCED 0x0001 /* Force CPU offline */ 335 336 /* 337 * DTrace flags. 338 */ 339 #define CPU_DTRACE_NOFAULT 0x0001 /* Don't fault */ 340 #define CPU_DTRACE_DROP 0x0002 /* Drop this ECB */ 341 #define CPU_DTRACE_BADADDR 0x0004 /* DTrace fault: bad address */ 342 #define CPU_DTRACE_BADALIGN 0x0008 /* DTrace fault: bad alignment */ 343 #define CPU_DTRACE_DIVZERO 0x0010 /* DTrace fault: divide by zero */ 344 #define CPU_DTRACE_ILLOP 0x0020 /* DTrace fault: illegal operation */ 345 #define CPU_DTRACE_NOSCRATCH 0x0040 /* DTrace fault: out of scratch */ 346 #define CPU_DTRACE_KPRIV 0x0080 /* DTrace fault: bad kernel access */ 347 #define CPU_DTRACE_UPRIV 0x0100 /* DTrace fault: bad user access */ 348 #define CPU_DTRACE_TUPOFLOW 0x0200 /* DTrace fault: tuple stack overflow */ 349 #if defined(__sparc) 350 #define CPU_DTRACE_FAKERESTORE 0x0400 /* pid provider hint to getreg */ 351 #endif 352 #define CPU_DTRACE_ENTRY 0x0800 /* pid provider hint to ustack() */ 353 #define CPU_DTRACE_BADSTACK 0x1000 /* DTrace fault: bad stack */ 354 355 #define CPU_DTRACE_FAULT (CPU_DTRACE_BADADDR | CPU_DTRACE_BADALIGN | \ 356 CPU_DTRACE_DIVZERO | CPU_DTRACE_ILLOP | \ 357 CPU_DTRACE_NOSCRATCH | CPU_DTRACE_KPRIV | \ 358 CPU_DTRACE_UPRIV | CPU_DTRACE_TUPOFLOW | \ 359 CPU_DTRACE_BADSTACK) 360 #define CPU_DTRACE_ERROR (CPU_DTRACE_FAULT | CPU_DTRACE_DROP) 361 362 /* 363 * Dispatcher flags 364 * These flags must be changed only by the current CPU. 365 */ 366 #define CPU_DISP_DONTSTEAL 0x01 /* CPU undergoing context swtch */ 367 #define CPU_DISP_HALTED 0x02 /* CPU halted waiting for interrupt */ 368 369 #endif /* _KERNEL || _KMEMUSER */ 370 371 #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP) 372 373 /* 374 * Macros for manipulating sets of CPUs as a bitmap. Note that this 375 * bitmap may vary in size depending on the maximum CPU id a specific 376 * platform supports. This may be different than the number of CPUs 377 * the platform supports, since CPU ids can be sparse. We define two 378 * sets of macros; one for platforms where the maximum CPU id is less 379 * than the number of bits in a single word (32 in a 32-bit kernel, 380 * 64 in a 64-bit kernel), and one for platforms that require bitmaps 381 * of more than one word. 382 */ 383 384 #define CPUSET_WORDS BT_BITOUL(NCPU) 385 #define CPUSET_NOTINSET ((uint_t)-1) 386 387 #if CPUSET_WORDS > 1 388 389 typedef struct cpuset { 390 ulong_t cpub[CPUSET_WORDS]; 391 } cpuset_t; 392 393 /* 394 * Private functions for manipulating cpusets that do not fit in a 395 * single word. These should not be used directly; instead the 396 * CPUSET_* macros should be used so the code will be portable 397 * across different definitions of NCPU. 398 */ 399 extern void cpuset_all(cpuset_t *); 400 extern void cpuset_all_but(cpuset_t *, uint_t); 401 extern int cpuset_isnull(cpuset_t *); 402 extern int cpuset_cmp(cpuset_t *, cpuset_t *); 403 extern void cpuset_only(cpuset_t *, uint_t); 404 extern uint_t cpuset_find(cpuset_t *); 405 extern void cpuset_bounds(cpuset_t *, uint_t *, uint_t *); 406 407 #define CPUSET_ALL(set) cpuset_all(&(set)) 408 #define CPUSET_ALL_BUT(set, cpu) cpuset_all_but(&(set), cpu) 409 #define CPUSET_ONLY(set, cpu) cpuset_only(&(set), cpu) 410 #define CPU_IN_SET(set, cpu) BT_TEST((set).cpub, cpu) 411 #define CPUSET_ADD(set, cpu) BT_SET((set).cpub, cpu) 412 #define CPUSET_DEL(set, cpu) BT_CLEAR((set).cpub, cpu) 413 #define CPUSET_ISNULL(set) cpuset_isnull(&(set)) 414 #define CPUSET_ISEQUAL(set1, set2) cpuset_cmp(&(set1), &(set2)) 415 416 /* 417 * Find one CPU in the cpuset. 418 * Sets "cpu" to the id of the found CPU, or CPUSET_NOTINSET if no cpu 419 * could be found. (i.e. empty set) 420 */ 421 #define CPUSET_FIND(set, cpu) { \ 422 cpu = cpuset_find(&(set)); \ 423 } 424 425 /* 426 * Determine the smallest and largest CPU id in the set. Returns 427 * CPUSET_NOTINSET in smallest and largest when set is empty. 428 */ 429 #define CPUSET_BOUNDS(set, smallest, largest) { \ 430 cpuset_bounds(&(set), &(smallest), &(largest)); \ 431 } 432 433 /* 434 * Atomic cpuset operations 435 * These are safe to use for concurrent cpuset manipulations. 436 * "xdel" and "xadd" are exclusive operations, that set "result" to "0" 437 * if the add or del was successful, or "-1" if not successful. 438 * (e.g. attempting to add a cpu to a cpuset that's already there, or 439 * deleting a cpu that's not in the cpuset) 440 */ 441 442 #define CPUSET_ATOMIC_DEL(set, cpu) BT_ATOMIC_CLEAR((set).cpub, (cpu)) 443 #define CPUSET_ATOMIC_ADD(set, cpu) BT_ATOMIC_SET((set).cpub, (cpu)) 444 445 #define CPUSET_ATOMIC_XADD(set, cpu, result) \ 446 BT_ATOMIC_SET_EXCL((set).cpub, cpu, result) 447 448 #define CPUSET_ATOMIC_XDEL(set, cpu, result) \ 449 BT_ATOMIC_CLEAR_EXCL((set).cpub, cpu, result) 450 451 452 #define CPUSET_OR(set1, set2) { \ 453 int _i; \ 454 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 455 (set1).cpub[_i] |= (set2).cpub[_i]; \ 456 } 457 458 #define CPUSET_XOR(set1, set2) { \ 459 int _i; \ 460 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 461 (set1).cpub[_i] ^= (set2).cpub[_i]; \ 462 } 463 464 #define CPUSET_AND(set1, set2) { \ 465 int _i; \ 466 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 467 (set1).cpub[_i] &= (set2).cpub[_i]; \ 468 } 469 470 #define CPUSET_ZERO(set) { \ 471 int _i; \ 472 for (_i = 0; _i < CPUSET_WORDS; _i++) \ 473 (set).cpub[_i] = 0; \ 474 } 475 476 #elif CPUSET_WORDS == 1 477 478 typedef ulong_t cpuset_t; /* a set of CPUs */ 479 480 #define CPUSET(cpu) (1UL << (cpu)) 481 482 #define CPUSET_ALL(set) ((void)((set) = ~0UL)) 483 #define CPUSET_ALL_BUT(set, cpu) ((void)((set) = ~CPUSET(cpu))) 484 #define CPUSET_ONLY(set, cpu) ((void)((set) = CPUSET(cpu))) 485 #define CPU_IN_SET(set, cpu) ((set) & CPUSET(cpu)) 486 #define CPUSET_ADD(set, cpu) ((void)((set) |= CPUSET(cpu))) 487 #define CPUSET_DEL(set, cpu) ((void)((set) &= ~CPUSET(cpu))) 488 #define CPUSET_ISNULL(set) ((set) == 0) 489 #define CPUSET_ISEQUAL(set1, set2) ((set1) == (set2)) 490 #define CPUSET_OR(set1, set2) ((void)((set1) |= (set2))) 491 #define CPUSET_XOR(set1, set2) ((void)((set1) ^= (set2))) 492 #define CPUSET_AND(set1, set2) ((void)((set1) &= (set2))) 493 #define CPUSET_ZERO(set) ((void)((set) = 0)) 494 495 #define CPUSET_FIND(set, cpu) { \ 496 cpu = (uint_t)(lowbit(set) - 1); \ 497 } 498 499 #define CPUSET_BOUNDS(set, smallest, largest) { \ 500 smallest = (uint_t)(lowbit(set) - 1); \ 501 largest = (uint_t)(highbit(set) - 1); \ 502 } 503 504 #define CPUSET_ATOMIC_DEL(set, cpu) atomic_and_long(&(set), ~CPUSET(cpu)) 505 #define CPUSET_ATOMIC_ADD(set, cpu) atomic_or_long(&(set), CPUSET(cpu)) 506 507 #define CPUSET_ATOMIC_XADD(set, cpu, result) \ 508 { result = atomic_set_long_excl(&(set), (cpu)); } 509 510 #define CPUSET_ATOMIC_XDEL(set, cpu, result) \ 511 { result = atomic_clear_long_excl(&(set), (cpu)); } 512 513 #else /* CPUSET_WORDS <= 0 */ 514 515 #error NCPU is undefined or invalid 516 517 #endif /* CPUSET_WORDS */ 518 519 extern cpuset_t cpu_seqid_inuse; 520 521 #endif /* (_KERNEL || _KMEMUSER) && _MACHDEP */ 522 523 #define CPU_CPR_OFFLINE 0x0 524 #define CPU_CPR_ONLINE 0x1 525 #define CPU_CPR_IS_OFFLINE(cpu) (((cpu)->cpu_cpr_flags & CPU_CPR_ONLINE) == 0) 526 #define CPU_CPR_IS_ONLINE(cpu) ((cpu)->cpu_cpr_flags & CPU_CPR_ONLINE) 527 #define CPU_SET_CPR_FLAGS(cpu, flag) ((cpu)->cpu_cpr_flags |= flag) 528 529 #if defined(_KERNEL) || defined(_KMEMUSER) 530 531 extern struct cpu *cpu[]; /* indexed by CPU number */ 532 extern struct cpu **cpu_seq; /* indexed by sequential CPU id */ 533 extern cpu_t *cpu_list; /* list of CPUs */ 534 extern cpu_t *cpu_active; /* list of active CPUs */ 535 extern int ncpus; /* number of CPUs present */ 536 extern int ncpus_online; /* number of CPUs not quiesced */ 537 extern int max_ncpus; /* max present before ncpus is known */ 538 extern int boot_max_ncpus; /* like max_ncpus but for real */ 539 extern int boot_ncpus; /* # cpus present @ boot */ 540 extern processorid_t max_cpuid; /* maximum CPU number */ 541 extern struct cpu *cpu_inmotion; /* offline or partition move target */ 542 extern cpu_t *clock_cpu_list; 543 544 #if defined(__i386) || defined(__amd64) 545 extern struct cpu *curcpup(void); 546 #define CPU (curcpup()) /* Pointer to current CPU */ 547 #else 548 #define CPU (curthread->t_cpu) /* Pointer to current CPU */ 549 #endif 550 551 /* 552 * CPU_CURRENT indicates to thread_affinity_set to use CPU->cpu_id 553 * as the target and to grab cpu_lock instead of requiring the caller 554 * to grab it. 555 */ 556 #define CPU_CURRENT -3 557 558 /* 559 * Per-CPU statistics 560 * 561 * cpu_stats_t contains numerous system and VM-related statistics, in the form 562 * of gauges or monotonically-increasing event occurrence counts. 563 */ 564 565 #define CPU_STATS_ENTER_K() kpreempt_disable() 566 #define CPU_STATS_EXIT_K() kpreempt_enable() 567 568 #define CPU_STATS_ADD_K(class, stat, amount) \ 569 { kpreempt_disable(); /* keep from switching CPUs */\ 570 CPU_STATS_ADDQ(CPU, class, stat, amount); \ 571 kpreempt_enable(); \ 572 } 573 574 #define CPU_STATS_ADDQ(cp, class, stat, amount) { \ 575 extern void __dtrace_probe___cpu_##class##info_##stat(uint_t, \ 576 uint64_t *, cpu_t *); \ 577 uint64_t *stataddr = &((cp)->cpu_stats.class.stat); \ 578 __dtrace_probe___cpu_##class##info_##stat((amount), \ 579 stataddr, cp); \ 580 *(stataddr) += (amount); \ 581 } 582 583 #define CPU_STATS(cp, stat) \ 584 ((cp)->cpu_stats.stat) 585 586 #endif /* _KERNEL || _KMEMUSER */ 587 588 /* 589 * CPU support routines. 590 */ 591 #if defined(_KERNEL) && defined(__STDC__) /* not for genassym.c */ 592 593 struct zone; 594 595 void cpu_list_init(cpu_t *); 596 void cpu_add_unit(cpu_t *); 597 void cpu_del_unit(int cpuid); 598 void cpu_add_active(cpu_t *); 599 void cpu_kstat_init(cpu_t *); 600 void cpu_visibility_add(cpu_t *, struct zone *); 601 void cpu_visibility_remove(cpu_t *, struct zone *); 602 void cpu_visibility_configure(cpu_t *, struct zone *); 603 void cpu_visibility_unconfigure(cpu_t *, struct zone *); 604 void cpu_visibility_online(cpu_t *, struct zone *); 605 void cpu_visibility_offline(cpu_t *, struct zone *); 606 void cpu_create_intrstat(cpu_t *); 607 void cpu_delete_intrstat(cpu_t *); 608 int cpu_kstat_intrstat_update(kstat_t *, int); 609 void cpu_intr_swtch_enter(kthread_t *); 610 void cpu_intr_swtch_exit(kthread_t *); 611 612 void mbox_lock_init(void); /* initialize cross-call locks */ 613 void mbox_init(int cpun); /* initialize cross-calls */ 614 void poke_cpu(int cpun); /* interrupt another CPU (to preempt) */ 615 616 /* 617 * values for safe_list. Pause state that CPUs are in. 618 */ 619 #define PAUSE_IDLE 0 /* normal state */ 620 #define PAUSE_READY 1 /* paused thread ready to spl */ 621 #define PAUSE_WAIT 2 /* paused thread is spl-ed high */ 622 #define PAUSE_DIE 3 /* tell pause thread to leave */ 623 #define PAUSE_DEAD 4 /* pause thread has left */ 624 625 void mach_cpu_pause(volatile char *); 626 627 void pause_cpus(cpu_t *off_cp); 628 void start_cpus(void); 629 int cpus_paused(void); 630 631 void cpu_pause_init(void); 632 cpu_t *cpu_get(processorid_t cpun); /* get the CPU struct associated */ 633 634 int cpu_online(cpu_t *cp); /* take cpu online */ 635 int cpu_offline(cpu_t *cp, int flags); /* take cpu offline */ 636 int cpu_spare(cpu_t *cp, int flags); /* take cpu to spare */ 637 int cpu_faulted(cpu_t *cp, int flags); /* take cpu to faulted */ 638 int cpu_poweron(cpu_t *cp); /* take powered-off cpu to offline */ 639 int cpu_poweroff(cpu_t *cp); /* take offline cpu to powered-off */ 640 641 cpu_t *cpu_intr_next(cpu_t *cp); /* get next online CPU taking intrs */ 642 int cpu_intr_count(cpu_t *cp); /* count # of CPUs handling intrs */ 643 int cpu_intr_on(cpu_t *cp); /* CPU taking I/O interrupts? */ 644 void cpu_intr_enable(cpu_t *cp); /* enable I/O interrupts */ 645 int cpu_intr_disable(cpu_t *cp); /* disable I/O interrupts */ 646 void cpu_intr_alloc(cpu_t *cp, int n); /* allocate interrupt threads */ 647 648 /* 649 * Routines for checking CPU states. 650 */ 651 int cpu_is_online(cpu_t *); /* check if CPU is online */ 652 int cpu_is_nointr(cpu_t *); /* check if CPU can service intrs */ 653 int cpu_is_active(cpu_t *); /* check if CPU can run threads */ 654 int cpu_is_offline(cpu_t *); /* check if CPU is offline */ 655 int cpu_is_poweredoff(cpu_t *); /* check if CPU is powered off */ 656 657 int cpu_flagged_online(cpu_flag_t); /* flags show CPU is online */ 658 int cpu_flagged_nointr(cpu_flag_t); /* flags show CPU not handling intrs */ 659 int cpu_flagged_active(cpu_flag_t); /* flags show CPU scheduling threads */ 660 int cpu_flagged_offline(cpu_flag_t); /* flags show CPU is offline */ 661 int cpu_flagged_poweredoff(cpu_flag_t); /* flags show CPU is powered off */ 662 663 /* 664 * The processor_info(2) state of a CPU is a simplified representation suitable 665 * for use by an application program. Kernel subsystems should utilize the 666 * internal per-CPU state as given by the cpu_flags member of the cpu structure, 667 * as this information may include platform- or architecture-specific state 668 * critical to a subsystem's disposition of a particular CPU. 669 */ 670 void cpu_set_state(cpu_t *); /* record/timestamp current state */ 671 int cpu_get_state(cpu_t *); /* get current cpu state */ 672 const char *cpu_get_state_str(cpu_t *); /* get current cpu state as string */ 673 674 675 void cpu_set_curr_clock(uint64_t); /* indicate the current CPU's freq */ 676 void cpu_set_supp_freqs(cpu_t *, const char *); /* set the CPU supported */ 677 /* frequencies */ 678 679 int cpu_configure(int); 680 int cpu_unconfigure(int); 681 void cpu_destroy_bound_threads(cpu_t *cp); 682 683 extern int cpu_bind_thread(kthread_t *tp, processorid_t bind, 684 processorid_t *obind, int *error); 685 extern int cpu_unbind(processorid_t cpu_id, boolean_t force); 686 extern void thread_affinity_set(kthread_t *t, int cpu_id); 687 extern void thread_affinity_clear(kthread_t *t); 688 extern void affinity_set(int cpu_id); 689 extern void affinity_clear(void); 690 extern void init_cpu_mstate(struct cpu *, int); 691 extern void term_cpu_mstate(struct cpu *); 692 extern void new_cpu_mstate(int, hrtime_t); 693 extern void get_cpu_mstate(struct cpu *, hrtime_t *); 694 extern void thread_nomigrate(void); 695 extern void thread_allowmigrate(void); 696 extern void weakbinding_stop(void); 697 extern void weakbinding_start(void); 698 699 /* 700 * The following routines affect the CPUs participation in interrupt processing, 701 * if that is applicable on the architecture. This only affects interrupts 702 * which aren't directed at the processor (not cross calls). 703 * 704 * cpu_disable_intr returns non-zero if interrupts were previously enabled. 705 */ 706 int cpu_disable_intr(struct cpu *cp); /* stop issuing interrupts to cpu */ 707 void cpu_enable_intr(struct cpu *cp); /* start issuing interrupts to cpu */ 708 709 /* 710 * The mutex cpu_lock protects cpu_flags for all CPUs, as well as the ncpus 711 * and ncpus_online counts. 712 */ 713 extern kmutex_t cpu_lock; /* lock protecting CPU data */ 714 715 typedef enum { 716 CPU_INIT, 717 CPU_CONFIG, 718 CPU_UNCONFIG, 719 CPU_ON, 720 CPU_OFF, 721 CPU_CPUPART_IN, 722 CPU_CPUPART_OUT, 723 CPU_SETUP 724 } cpu_setup_t; 725 726 typedef int cpu_setup_func_t(cpu_setup_t, int, void *); 727 728 /* 729 * Routines used to register interest in cpu's being added to or removed 730 * from the system. 731 */ 732 extern void register_cpu_setup_func(cpu_setup_func_t *, void *); 733 extern void unregister_cpu_setup_func(cpu_setup_func_t *, void *); 734 extern void cpu_state_change_notify(int, cpu_setup_t); 735 736 /* 737 * Create various strings that describe the given CPU for the 738 * processor_info system call and configuration-related kstats. 739 */ 740 #define CPU_IDSTRLEN 100 741 742 extern void init_cpu_info(struct cpu *); 743 extern void populate_idstr(struct cpu *); 744 extern void cpu_vm_data_init(struct cpu *); 745 extern void cpu_vm_data_destroy(struct cpu *); 746 747 #endif /* _KERNEL */ 748 749 #ifdef __cplusplus 750 } 751 #endif 752 753 #endif /* _SYS_CPUVAR_H */ 754