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 * Portions Copyright 2006-2008 John Birrell jb@freebsd.org 22 * 23 * $FreeBSD$ 24 * 25 */ 26 27 /* 28 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 29 * Use is subject to license terms. 30 */ 31 32 #include <sys/cdefs.h> 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/conf.h> 36 #include <sys/cpuvar.h> 37 #include <sys/fcntl.h> 38 #include <sys/filio.h> 39 #include <sys/kdb.h> 40 #include <sys/kernel.h> 41 #include <sys/kmem.h> 42 #include <sys/kthread.h> 43 #include <sys/limits.h> 44 #include <sys/linker.h> 45 #include <sys/lock.h> 46 #include <sys/malloc.h> 47 #include <sys/module.h> 48 #include <sys/mutex.h> 49 #include <sys/poll.h> 50 #include <sys/proc.h> 51 #include <sys/selinfo.h> 52 #include <sys/smp.h> 53 #include <sys/sysctl.h> 54 #include <sys/uio.h> 55 #include <sys/unistd.h> 56 #include <machine/cpu.h> 57 #include <machine/stdarg.h> 58 59 #include <sys/dtrace.h> 60 #include <sys/dtrace_bsd.h> 61 62 #define PROF_NAMELEN 15 63 64 #define PROF_PROFILE 0 65 #define PROF_TICK 1 66 #define PROF_PREFIX_PROFILE "profile-" 67 #define PROF_PREFIX_TICK "tick-" 68 69 /* 70 * Regardless of platform, there are five artificial frames in the case of the 71 * profile provider: 72 * 73 * profile_fire 74 * cyclic_expire 75 * cyclic_fire 76 * [ cbe ] 77 * [ locore ] 78 * 79 * On amd64, there are two frames associated with locore: one in locore, and 80 * another in common interrupt dispatch code. (i386 has not been modified to 81 * use this common layer.) Further, on i386, the interrupted instruction 82 * appears as its own stack frame. All of this means that we need to add one 83 * frame for amd64, and then take one away for both amd64 and i386. 84 * 85 * On SPARC, the picture is further complicated because the compiler 86 * optimizes away tail-calls -- so the following frames are optimized away: 87 * 88 * profile_fire 89 * cyclic_expire 90 * 91 * This gives three frames. However, on DEBUG kernels, the cyclic_expire 92 * frame cannot be tail-call eliminated, yielding four frames in this case. 93 * 94 * All of the above constraints lead to the mess below. Yes, the profile 95 * provider should ideally figure this out on-the-fly by hiting one of its own 96 * probes and then walking its own stack trace. This is complicated, however, 97 * and the static definition doesn't seem to be overly brittle. Still, we 98 * allow for a manual override in case we get it completely wrong. 99 */ 100 #ifdef __amd64 101 #define PROF_ARTIFICIAL_FRAMES 10 102 #else 103 #ifdef __i386 104 #define PROF_ARTIFICIAL_FRAMES 6 105 #else 106 #ifdef __sparc 107 #ifdef DEBUG 108 #define PROF_ARTIFICIAL_FRAMES 4 109 #else 110 #define PROF_ARTIFICIAL_FRAMES 3 111 #endif 112 #endif 113 #endif 114 #endif 115 116 #ifdef __mips 117 /* 118 * This value is bogus just to make module compilable on mips 119 */ 120 #define PROF_ARTIFICIAL_FRAMES 3 121 #endif 122 123 #ifdef __powerpc__ 124 /* 125 * This value is bogus just to make module compilable on powerpc 126 */ 127 #define PROF_ARTIFICIAL_FRAMES 3 128 #endif 129 130 struct profile_probe_percpu; 131 132 #ifdef __mips 133 /* bogus */ 134 #define PROF_ARTIFICIAL_FRAMES 3 135 #endif 136 137 #ifdef __arm__ 138 #define PROF_ARTIFICIAL_FRAMES 3 139 #endif 140 141 #ifdef __aarch64__ 142 /* TODO: verify */ 143 #define PROF_ARTIFICIAL_FRAMES 10 144 #endif 145 146 #ifdef __riscv__ 147 /* TODO: verify */ 148 #define PROF_ARTIFICIAL_FRAMES 10 149 #endif 150 151 typedef struct profile_probe { 152 char prof_name[PROF_NAMELEN]; 153 dtrace_id_t prof_id; 154 int prof_kind; 155 #ifdef illumos 156 hrtime_t prof_interval; 157 cyclic_id_t prof_cyclic; 158 #else 159 sbintime_t prof_interval; 160 struct callout prof_cyclic; 161 sbintime_t prof_expected; 162 struct profile_probe_percpu **prof_pcpus; 163 #endif 164 } profile_probe_t; 165 166 typedef struct profile_probe_percpu { 167 hrtime_t profc_expected; 168 hrtime_t profc_interval; 169 profile_probe_t *profc_probe; 170 #ifdef __FreeBSD__ 171 struct callout profc_cyclic; 172 #endif 173 } profile_probe_percpu_t; 174 175 static d_open_t profile_open; 176 static int profile_unload(void); 177 static void profile_create(hrtime_t, char *, int); 178 static void profile_destroy(void *, dtrace_id_t, void *); 179 static void profile_enable(void *, dtrace_id_t, void *); 180 static void profile_disable(void *, dtrace_id_t, void *); 181 static void profile_load(void *); 182 static void profile_provide(void *, dtrace_probedesc_t *); 183 184 static int profile_rates[] = { 185 97, 199, 499, 997, 1999, 186 4001, 4999, 0, 0, 0, 187 0, 0, 0, 0, 0, 188 0, 0, 0, 0, 0 189 }; 190 191 static int profile_ticks[] = { 192 1, 10, 100, 500, 1000, 193 5000, 0, 0, 0, 0, 194 0, 0, 0, 0, 0 195 }; 196 197 /* 198 * profile_max defines the upper bound on the number of profile probes that 199 * can exist (this is to prevent malicious or clumsy users from exhausing 200 * system resources by creating a slew of profile probes). At mod load time, 201 * this gets its value from PROFILE_MAX_DEFAULT or profile-max-probes if it's 202 * present in the profile.conf file. 203 */ 204 #define PROFILE_MAX_DEFAULT 1000 /* default max. number of probes */ 205 static uint32_t profile_max = PROFILE_MAX_DEFAULT; 206 /* maximum number of profile probes */ 207 static uint32_t profile_total; /* current number of profile probes */ 208 209 static struct cdevsw profile_cdevsw = { 210 .d_version = D_VERSION, 211 .d_open = profile_open, 212 .d_name = "profile", 213 }; 214 215 static dtrace_pattr_t profile_attr = { 216 { DTRACE_STABILITY_EVOLVING, DTRACE_STABILITY_EVOLVING, DTRACE_CLASS_COMMON }, 217 { DTRACE_STABILITY_PRIVATE, DTRACE_STABILITY_PRIVATE, DTRACE_CLASS_UNKNOWN }, 218 { DTRACE_STABILITY_PRIVATE, DTRACE_STABILITY_PRIVATE, DTRACE_CLASS_ISA }, 219 { DTRACE_STABILITY_EVOLVING, DTRACE_STABILITY_EVOLVING, DTRACE_CLASS_COMMON }, 220 { DTRACE_STABILITY_PRIVATE, DTRACE_STABILITY_PRIVATE, DTRACE_CLASS_ISA }, 221 }; 222 223 static dtrace_pops_t profile_pops = { 224 profile_provide, 225 NULL, 226 profile_enable, 227 profile_disable, 228 NULL, 229 NULL, 230 NULL, 231 NULL, 232 NULL, 233 profile_destroy 234 }; 235 236 static struct cdev *profile_cdev; 237 static dtrace_provider_id_t profile_id; 238 static hrtime_t profile_interval_min = NANOSEC / 5000; /* 5000 hz */ 239 static int profile_aframes = PROF_ARTIFICIAL_FRAMES; 240 241 SYSCTL_DECL(_kern_dtrace); 242 SYSCTL_NODE(_kern_dtrace, OID_AUTO, profile, CTLFLAG_RD, 0, "DTrace profile parameters"); 243 SYSCTL_INT(_kern_dtrace_profile, OID_AUTO, aframes, CTLFLAG_RW, &profile_aframes, 244 0, "Skipped frames for profile provider"); 245 246 static sbintime_t 247 nsec_to_sbt(hrtime_t nsec) 248 { 249 time_t sec; 250 251 /* 252 * We need to calculate nsec * 2^32 / 10^9 253 * Seconds and nanoseconds are split to avoid overflow. 254 */ 255 sec = nsec / NANOSEC; 256 nsec = nsec % NANOSEC; 257 return (((sbintime_t)sec << 32) | ((sbintime_t)nsec << 32) / NANOSEC); 258 } 259 260 static hrtime_t 261 sbt_to_nsec(sbintime_t sbt) 262 { 263 264 return ((sbt >> 32) * NANOSEC + 265 (((uint32_t)sbt * (hrtime_t)NANOSEC) >> 32)); 266 } 267 268 static void 269 profile_fire(void *arg) 270 { 271 profile_probe_percpu_t *pcpu = arg; 272 profile_probe_t *prof = pcpu->profc_probe; 273 hrtime_t late; 274 struct trapframe *frame; 275 uintfptr_t pc, upc; 276 277 #ifdef illumos 278 late = gethrtime() - pcpu->profc_expected; 279 #else 280 late = sbt_to_nsec(sbinuptime() - pcpu->profc_expected); 281 #endif 282 283 pc = 0; 284 upc = 0; 285 286 /* 287 * td_intr_frame can be unset if this is a catch up event 288 * after waking up from idle sleep. 289 * This can only happen on a CPU idle thread. 290 */ 291 frame = curthread->td_intr_frame; 292 if (frame != NULL) { 293 if (TRAPF_USERMODE(frame)) 294 upc = TRAPF_PC(frame); 295 else 296 pc = TRAPF_PC(frame); 297 } 298 dtrace_probe(prof->prof_id, pc, upc, late, 0, 0); 299 300 pcpu->profc_expected += pcpu->profc_interval; 301 callout_schedule_sbt_curcpu(&pcpu->profc_cyclic, 302 pcpu->profc_expected, 0, C_DIRECT_EXEC | C_ABSOLUTE); 303 } 304 305 static void 306 profile_tick(void *arg) 307 { 308 profile_probe_t *prof = arg; 309 struct trapframe *frame; 310 uintfptr_t pc, upc; 311 312 pc = 0; 313 upc = 0; 314 315 /* 316 * td_intr_frame can be unset if this is a catch up event 317 * after waking up from idle sleep. 318 * This can only happen on a CPU idle thread. 319 */ 320 frame = curthread->td_intr_frame; 321 if (frame != NULL) { 322 if (TRAPF_USERMODE(frame)) 323 upc = TRAPF_PC(frame); 324 else 325 pc = TRAPF_PC(frame); 326 } 327 dtrace_probe(prof->prof_id, pc, upc, 0, 0, 0); 328 329 prof->prof_expected += prof->prof_interval; 330 callout_schedule_sbt(&prof->prof_cyclic, 331 prof->prof_expected, 0, C_DIRECT_EXEC | C_ABSOLUTE); 332 } 333 334 static void 335 profile_create(hrtime_t interval, char *name, int kind) 336 { 337 profile_probe_t *prof; 338 339 if (interval < profile_interval_min) 340 return; 341 342 if (dtrace_probe_lookup(profile_id, NULL, NULL, name) != 0) 343 return; 344 345 atomic_add_32(&profile_total, 1); 346 if (profile_total > profile_max) { 347 atomic_add_32(&profile_total, -1); 348 return; 349 } 350 351 prof = kmem_zalloc(sizeof (profile_probe_t), KM_SLEEP); 352 (void) strcpy(prof->prof_name, name); 353 #ifdef illumos 354 prof->prof_interval = interval; 355 prof->prof_cyclic = CYCLIC_NONE; 356 #else 357 prof->prof_interval = nsec_to_sbt(interval); 358 callout_init(&prof->prof_cyclic, 1); 359 #endif 360 prof->prof_kind = kind; 361 prof->prof_id = dtrace_probe_create(profile_id, 362 NULL, NULL, name, 363 profile_aframes, prof); 364 } 365 366 /*ARGSUSED*/ 367 static void 368 profile_provide(void *arg, dtrace_probedesc_t *desc) 369 { 370 int i, j, rate, kind; 371 hrtime_t val = 0, mult = 1, len = 0; 372 char *name, *suffix = NULL; 373 374 const struct { 375 char *prefix; 376 int kind; 377 } types[] = { 378 { PROF_PREFIX_PROFILE, PROF_PROFILE }, 379 { PROF_PREFIX_TICK, PROF_TICK }, 380 { 0, 0 } 381 }; 382 383 const struct { 384 char *name; 385 hrtime_t mult; 386 } suffixes[] = { 387 { "ns", NANOSEC / NANOSEC }, 388 { "nsec", NANOSEC / NANOSEC }, 389 { "us", NANOSEC / MICROSEC }, 390 { "usec", NANOSEC / MICROSEC }, 391 { "ms", NANOSEC / MILLISEC }, 392 { "msec", NANOSEC / MILLISEC }, 393 { "s", NANOSEC / SEC }, 394 { "sec", NANOSEC / SEC }, 395 { "m", NANOSEC * (hrtime_t)60 }, 396 { "min", NANOSEC * (hrtime_t)60 }, 397 { "h", NANOSEC * (hrtime_t)(60 * 60) }, 398 { "hour", NANOSEC * (hrtime_t)(60 * 60) }, 399 { "d", NANOSEC * (hrtime_t)(24 * 60 * 60) }, 400 { "day", NANOSEC * (hrtime_t)(24 * 60 * 60) }, 401 { "hz", 0 }, 402 { NULL } 403 }; 404 405 if (desc == NULL) { 406 char n[PROF_NAMELEN]; 407 408 /* 409 * If no description was provided, provide all of our probes. 410 */ 411 for (i = 0; i < sizeof (profile_rates) / sizeof (int); i++) { 412 if ((rate = profile_rates[i]) == 0) 413 continue; 414 415 (void) snprintf(n, PROF_NAMELEN, "%s%d", 416 PROF_PREFIX_PROFILE, rate); 417 profile_create(NANOSEC / rate, n, PROF_PROFILE); 418 } 419 420 for (i = 0; i < sizeof (profile_ticks) / sizeof (int); i++) { 421 if ((rate = profile_ticks[i]) == 0) 422 continue; 423 424 (void) snprintf(n, PROF_NAMELEN, "%s%d", 425 PROF_PREFIX_TICK, rate); 426 profile_create(NANOSEC / rate, n, PROF_TICK); 427 } 428 429 return; 430 } 431 432 name = desc->dtpd_name; 433 434 for (i = 0; types[i].prefix != NULL; i++) { 435 len = strlen(types[i].prefix); 436 437 if (strncmp(name, types[i].prefix, len) != 0) 438 continue; 439 break; 440 } 441 442 if (types[i].prefix == NULL) 443 return; 444 445 kind = types[i].kind; 446 j = strlen(name) - len; 447 448 /* 449 * We need to start before any time suffix. 450 */ 451 for (j = strlen(name); j >= len; j--) { 452 if (name[j] >= '0' && name[j] <= '9') 453 break; 454 suffix = &name[j]; 455 } 456 457 ASSERT(suffix != NULL); 458 459 /* 460 * Now determine the numerical value present in the probe name. 461 */ 462 for (; j >= len; j--) { 463 if (name[j] < '0' || name[j] > '9') 464 return; 465 466 val += (name[j] - '0') * mult; 467 mult *= (hrtime_t)10; 468 } 469 470 if (val == 0) 471 return; 472 473 /* 474 * Look-up the suffix to determine the multiplier. 475 */ 476 for (i = 0, mult = 0; suffixes[i].name != NULL; i++) { 477 if (strcasecmp(suffixes[i].name, suffix) == 0) { 478 mult = suffixes[i].mult; 479 break; 480 } 481 } 482 483 if (suffixes[i].name == NULL && *suffix != '\0') 484 return; 485 486 if (mult == 0) { 487 /* 488 * The default is frequency-per-second. 489 */ 490 val = NANOSEC / val; 491 } else { 492 val *= mult; 493 } 494 495 profile_create(val, name, kind); 496 } 497 498 /* ARGSUSED */ 499 static void 500 profile_destroy(void *arg, dtrace_id_t id, void *parg) 501 { 502 profile_probe_t *prof = parg; 503 504 #ifdef illumos 505 ASSERT(prof->prof_cyclic == CYCLIC_NONE); 506 #else 507 ASSERT(!callout_active(&prof->prof_cyclic) && prof->prof_pcpus == NULL); 508 #endif 509 kmem_free(prof, sizeof (profile_probe_t)); 510 511 ASSERT(profile_total >= 1); 512 atomic_add_32(&profile_total, -1); 513 } 514 515 #ifdef illumos 516 /*ARGSUSED*/ 517 static void 518 profile_online(void *arg, cpu_t *cpu, cyc_handler_t *hdlr, cyc_time_t *when) 519 { 520 profile_probe_t *prof = arg; 521 profile_probe_percpu_t *pcpu; 522 523 pcpu = kmem_zalloc(sizeof (profile_probe_percpu_t), KM_SLEEP); 524 pcpu->profc_probe = prof; 525 526 hdlr->cyh_func = profile_fire; 527 hdlr->cyh_arg = pcpu; 528 529 when->cyt_interval = prof->prof_interval; 530 when->cyt_when = gethrtime() + when->cyt_interval; 531 532 pcpu->profc_expected = when->cyt_when; 533 pcpu->profc_interval = when->cyt_interval; 534 } 535 536 /*ARGSUSED*/ 537 static void 538 profile_offline(void *arg, cpu_t *cpu, void *oarg) 539 { 540 profile_probe_percpu_t *pcpu = oarg; 541 542 ASSERT(pcpu->profc_probe == arg); 543 kmem_free(pcpu, sizeof (profile_probe_percpu_t)); 544 } 545 546 /* ARGSUSED */ 547 static void 548 profile_enable(void *arg, dtrace_id_t id, void *parg) 549 { 550 profile_probe_t *prof = parg; 551 cyc_omni_handler_t omni; 552 cyc_handler_t hdlr; 553 cyc_time_t when; 554 555 ASSERT(prof->prof_interval != 0); 556 ASSERT(MUTEX_HELD(&cpu_lock)); 557 558 if (prof->prof_kind == PROF_TICK) { 559 hdlr.cyh_func = profile_tick; 560 hdlr.cyh_arg = prof; 561 562 when.cyt_interval = prof->prof_interval; 563 when.cyt_when = gethrtime() + when.cyt_interval; 564 } else { 565 ASSERT(prof->prof_kind == PROF_PROFILE); 566 omni.cyo_online = profile_online; 567 omni.cyo_offline = profile_offline; 568 omni.cyo_arg = prof; 569 } 570 571 if (prof->prof_kind == PROF_TICK) { 572 prof->prof_cyclic = cyclic_add(&hdlr, &when); 573 } else { 574 prof->prof_cyclic = cyclic_add_omni(&omni); 575 } 576 } 577 578 /* ARGSUSED */ 579 static void 580 profile_disable(void *arg, dtrace_id_t id, void *parg) 581 { 582 profile_probe_t *prof = parg; 583 584 ASSERT(prof->prof_cyclic != CYCLIC_NONE); 585 ASSERT(MUTEX_HELD(&cpu_lock)); 586 587 cyclic_remove(prof->prof_cyclic); 588 prof->prof_cyclic = CYCLIC_NONE; 589 } 590 591 #else 592 593 static void 594 profile_enable_omni(profile_probe_t *prof) 595 { 596 profile_probe_percpu_t *pcpu; 597 int cpu; 598 599 prof->prof_pcpus = kmem_zalloc((mp_maxid + 1) * sizeof(pcpu), KM_SLEEP); 600 CPU_FOREACH(cpu) { 601 pcpu = kmem_zalloc(sizeof(profile_probe_percpu_t), KM_SLEEP); 602 prof->prof_pcpus[cpu] = pcpu; 603 pcpu->profc_probe = prof; 604 pcpu->profc_expected = sbinuptime() + prof->prof_interval; 605 pcpu->profc_interval = prof->prof_interval; 606 callout_init(&pcpu->profc_cyclic, 1); 607 callout_reset_sbt_on(&pcpu->profc_cyclic, 608 pcpu->profc_expected, 0, profile_fire, pcpu, 609 cpu, C_DIRECT_EXEC | C_ABSOLUTE); 610 } 611 } 612 613 static void 614 profile_disable_omni(profile_probe_t *prof) 615 { 616 profile_probe_percpu_t *pcpu; 617 int cpu; 618 619 ASSERT(prof->prof_pcpus != NULL); 620 CPU_FOREACH(cpu) { 621 pcpu = prof->prof_pcpus[cpu]; 622 ASSERT(pcpu->profc_probe == prof); 623 ASSERT(callout_active(&pcpu->profc_cyclic)); 624 callout_stop(&pcpu->profc_cyclic); 625 callout_drain(&pcpu->profc_cyclic); 626 kmem_free(pcpu, sizeof(profile_probe_percpu_t)); 627 } 628 kmem_free(prof->prof_pcpus, (mp_maxid + 1) * sizeof(pcpu)); 629 prof->prof_pcpus = NULL; 630 } 631 632 /* ARGSUSED */ 633 static void 634 profile_enable(void *arg, dtrace_id_t id, void *parg) 635 { 636 profile_probe_t *prof = parg; 637 638 if (prof->prof_kind == PROF_TICK) { 639 prof->prof_expected = sbinuptime() + prof->prof_interval; 640 callout_reset_sbt(&prof->prof_cyclic, 641 prof->prof_expected, 0, profile_tick, prof, 642 C_DIRECT_EXEC | C_ABSOLUTE); 643 } else { 644 ASSERT(prof->prof_kind == PROF_PROFILE); 645 profile_enable_omni(prof); 646 } 647 } 648 649 /* ARGSUSED */ 650 static void 651 profile_disable(void *arg, dtrace_id_t id, void *parg) 652 { 653 profile_probe_t *prof = parg; 654 655 if (prof->prof_kind == PROF_TICK) { 656 ASSERT(callout_active(&prof->prof_cyclic)); 657 callout_stop(&prof->prof_cyclic); 658 callout_drain(&prof->prof_cyclic); 659 } else { 660 ASSERT(prof->prof_kind == PROF_PROFILE); 661 profile_disable_omni(prof); 662 } 663 } 664 #endif 665 666 static void 667 profile_load(void *dummy) 668 { 669 /* Create the /dev/dtrace/profile entry. */ 670 profile_cdev = make_dev(&profile_cdevsw, 0, UID_ROOT, GID_WHEEL, 0600, 671 "dtrace/profile"); 672 673 if (dtrace_register("profile", &profile_attr, DTRACE_PRIV_USER, 674 NULL, &profile_pops, NULL, &profile_id) != 0) 675 return; 676 } 677 678 679 static int 680 profile_unload() 681 { 682 int error = 0; 683 684 if ((error = dtrace_unregister(profile_id)) != 0) 685 return (error); 686 687 destroy_dev(profile_cdev); 688 689 return (error); 690 } 691 692 /* ARGSUSED */ 693 static int 694 profile_modevent(module_t mod __unused, int type, void *data __unused) 695 { 696 int error = 0; 697 698 switch (type) { 699 case MOD_LOAD: 700 break; 701 702 case MOD_UNLOAD: 703 break; 704 705 case MOD_SHUTDOWN: 706 break; 707 708 default: 709 error = EOPNOTSUPP; 710 break; 711 712 } 713 return (error); 714 } 715 716 /* ARGSUSED */ 717 static int 718 profile_open(struct cdev *dev __unused, int oflags __unused, int devtype __unused, struct thread *td __unused) 719 { 720 return (0); 721 } 722 723 SYSINIT(profile_load, SI_SUB_DTRACE_PROVIDER, SI_ORDER_ANY, profile_load, NULL); 724 SYSUNINIT(profile_unload, SI_SUB_DTRACE_PROVIDER, SI_ORDER_ANY, profile_unload, NULL); 725 726 DEV_MODULE(profile, profile_modevent, NULL); 727 MODULE_VERSION(profile, 1); 728 MODULE_DEPEND(profile, dtrace, 1, 1, 1); 729 MODULE_DEPEND(profile, opensolaris, 1, 1, 1); 730