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/endian.h> 38 #include <sys/fcntl.h> 39 #include <sys/filio.h> 40 #include <sys/kdb.h> 41 #include <sys/kernel.h> 42 #include <sys/kmem.h> 43 #include <sys/kthread.h> 44 #include <sys/limits.h> 45 #include <sys/linker.h> 46 #include <sys/lock.h> 47 #include <sys/malloc.h> 48 #include <sys/module.h> 49 #include <sys/mutex.h> 50 #include <sys/poll.h> 51 #include <sys/proc.h> 52 #include <sys/selinfo.h> 53 #include <sys/smp.h> 54 #include <sys/sysctl.h> 55 #include <sys/uio.h> 56 #include <sys/unistd.h> 57 #include <machine/cpu.h> 58 #include <machine/stdarg.h> 59 60 #include <sys/dtrace.h> 61 #include <sys/dtrace_bsd.h> 62 63 #define PROF_NAMELEN 15 64 65 #define PROF_PROFILE 0 66 #define PROF_TICK 1 67 #define PROF_PREFIX_PROFILE "profile-" 68 #define PROF_PREFIX_TICK "tick-" 69 70 /* 71 * Regardless of platform, there are five artificial frames in the case of the 72 * profile provider: 73 * 74 * profile_fire 75 * cyclic_expire 76 * cyclic_fire 77 * [ cbe ] 78 * [ locore ] 79 * 80 * On amd64, there are two frames associated with locore: one in locore, and 81 * another in common interrupt dispatch code. (i386 has not been modified to 82 * use this common layer.) Further, on i386, the interrupted instruction 83 * appears as its own stack frame. All of this means that we need to add one 84 * frame for amd64, and then take one away for both amd64 and i386. 85 * 86 * On SPARC, the picture is further complicated because the compiler 87 * optimizes away tail-calls -- so the following frames are optimized away: 88 * 89 * profile_fire 90 * cyclic_expire 91 * 92 * This gives three frames. However, on DEBUG kernels, the cyclic_expire 93 * frame cannot be tail-call eliminated, yielding four frames in this case. 94 * 95 * All of the above constraints lead to the mess below. Yes, the profile 96 * provider should ideally figure this out on-the-fly by hiting one of its own 97 * probes and then walking its own stack trace. This is complicated, however, 98 * and the static definition doesn't seem to be overly brittle. Still, we 99 * allow for a manual override in case we get it completely wrong. 100 */ 101 #ifdef __amd64 102 #define PROF_ARTIFICIAL_FRAMES 10 103 #else 104 #ifdef __i386 105 #define PROF_ARTIFICIAL_FRAMES 6 106 #else 107 #ifdef __sparc 108 #ifdef DEBUG 109 #define PROF_ARTIFICIAL_FRAMES 4 110 #else 111 #define PROF_ARTIFICIAL_FRAMES 3 112 #endif 113 #endif 114 #endif 115 #endif 116 117 #ifdef __mips 118 /* 119 * This value is bogus just to make module compilable on mips 120 */ 121 #define PROF_ARTIFICIAL_FRAMES 3 122 #endif 123 124 #ifdef __powerpc__ 125 /* 126 * This value is bogus just to make module compilable on powerpc 127 */ 128 #define PROF_ARTIFICIAL_FRAMES 3 129 #endif 130 131 struct profile_probe_percpu; 132 133 #ifdef __mips 134 /* bogus */ 135 #define PROF_ARTIFICIAL_FRAMES 3 136 #endif 137 138 #ifdef __arm__ 139 #define PROF_ARTIFICIAL_FRAMES 3 140 #endif 141 142 #ifdef __aarch64__ 143 /* TODO: verify */ 144 #define PROF_ARTIFICIAL_FRAMES 10 145 #endif 146 147 #ifdef __riscv 148 /* TODO: verify */ 149 #define PROF_ARTIFICIAL_FRAMES 10 150 #endif 151 152 typedef struct profile_probe { 153 char prof_name[PROF_NAMELEN]; 154 dtrace_id_t prof_id; 155 int prof_kind; 156 #ifdef illumos 157 hrtime_t prof_interval; 158 cyclic_id_t prof_cyclic; 159 #else 160 sbintime_t prof_interval; 161 struct callout prof_cyclic; 162 sbintime_t prof_expected; 163 struct profile_probe_percpu **prof_pcpus; 164 #endif 165 } profile_probe_t; 166 167 typedef struct profile_probe_percpu { 168 hrtime_t profc_expected; 169 hrtime_t profc_interval; 170 profile_probe_t *profc_probe; 171 #ifdef __FreeBSD__ 172 struct callout profc_cyclic; 173 #endif 174 } profile_probe_percpu_t; 175 176 static d_open_t profile_open; 177 static int profile_unload(void); 178 static void profile_create(hrtime_t, char *, int); 179 static void profile_destroy(void *, dtrace_id_t, void *); 180 static void profile_enable(void *, dtrace_id_t, void *); 181 static void profile_disable(void *, dtrace_id_t, void *); 182 static void profile_load(void *); 183 static void profile_provide(void *, dtrace_probedesc_t *); 184 185 static int profile_rates[] = { 186 97, 199, 499, 997, 1999, 187 4001, 4999, 0, 0, 0, 188 0, 0, 0, 0, 0, 189 0, 0, 0, 0, 0 190 }; 191 192 static int profile_ticks[] = { 193 1, 10, 100, 500, 1000, 194 5000, 0, 0, 0, 0, 195 0, 0, 0, 0, 0 196 }; 197 198 /* 199 * profile_max defines the upper bound on the number of profile probes that 200 * can exist (this is to prevent malicious or clumsy users from exhausing 201 * system resources by creating a slew of profile probes). At mod load time, 202 * this gets its value from PROFILE_MAX_DEFAULT or profile-max-probes if it's 203 * present in the profile.conf file. 204 */ 205 #define PROFILE_MAX_DEFAULT 1000 /* default max. number of probes */ 206 static uint32_t profile_max = PROFILE_MAX_DEFAULT; 207 /* maximum number of profile probes */ 208 static uint32_t profile_total; /* current number of profile probes */ 209 210 static struct cdevsw profile_cdevsw = { 211 .d_version = D_VERSION, 212 .d_open = profile_open, 213 .d_name = "profile", 214 }; 215 216 static dtrace_pattr_t profile_attr = { 217 { DTRACE_STABILITY_EVOLVING, DTRACE_STABILITY_EVOLVING, DTRACE_CLASS_COMMON }, 218 { DTRACE_STABILITY_PRIVATE, DTRACE_STABILITY_PRIVATE, DTRACE_CLASS_UNKNOWN }, 219 { DTRACE_STABILITY_PRIVATE, DTRACE_STABILITY_PRIVATE, DTRACE_CLASS_ISA }, 220 { DTRACE_STABILITY_EVOLVING, DTRACE_STABILITY_EVOLVING, DTRACE_CLASS_COMMON }, 221 { DTRACE_STABILITY_PRIVATE, DTRACE_STABILITY_PRIVATE, DTRACE_CLASS_ISA }, 222 }; 223 224 static dtrace_pops_t profile_pops = { 225 .dtps_provide = profile_provide, 226 .dtps_provide_module = NULL, 227 .dtps_enable = profile_enable, 228 .dtps_disable = profile_disable, 229 .dtps_suspend = NULL, 230 .dtps_resume = NULL, 231 .dtps_getargdesc = NULL, 232 .dtps_getargval = NULL, 233 .dtps_usermode = NULL, 234 .dtps_destroy = profile_destroy 235 }; 236 237 static struct cdev *profile_cdev; 238 static dtrace_provider_id_t profile_id; 239 static hrtime_t profile_interval_min = NANOSEC / 5000; /* 5000 hz */ 240 static int profile_aframes = PROF_ARTIFICIAL_FRAMES; 241 242 SYSCTL_DECL(_kern_dtrace); 243 SYSCTL_NODE(_kern_dtrace, OID_AUTO, profile, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 244 "DTrace profile parameters"); 245 SYSCTL_INT(_kern_dtrace_profile, OID_AUTO, aframes, CTLFLAG_RW, &profile_aframes, 246 0, "Skipped frames for profile provider"); 247 248 static sbintime_t 249 nsec_to_sbt(hrtime_t nsec) 250 { 251 time_t sec; 252 253 /* 254 * We need to calculate nsec * 2^32 / 10^9 255 * Seconds and nanoseconds are split to avoid overflow. 256 */ 257 sec = nsec / NANOSEC; 258 nsec = nsec % NANOSEC; 259 return (((sbintime_t)sec << 32) | ((sbintime_t)nsec << 32) / NANOSEC); 260 } 261 262 static hrtime_t 263 sbt_to_nsec(sbintime_t sbt) 264 { 265 266 return ((sbt >> 32) * NANOSEC + 267 (((uint32_t)sbt * (hrtime_t)NANOSEC) >> 32)); 268 } 269 270 static void 271 profile_probe(profile_probe_t *prof, hrtime_t late) 272 { 273 struct thread *td; 274 struct trapframe *frame; 275 uintfptr_t pc, upc; 276 277 td = curthread; 278 pc = upc = 0; 279 280 /* 281 * td_intr_frame can be unset if this is a catch-up event upon waking up 282 * from idle sleep. This can only happen on a CPU idle thread. Use a 283 * representative arg0 value in this case so that one of the probe 284 * arguments is non-zero. 285 */ 286 frame = td->td_intr_frame; 287 if (frame != NULL) { 288 if (TRAPF_USERMODE(frame)) 289 upc = TRAPF_PC(frame); 290 else 291 pc = TRAPF_PC(frame); 292 } else if (TD_IS_IDLETHREAD(td)) 293 pc = (uintfptr_t)&cpu_idle; 294 295 dtrace_probe(prof->prof_id, pc, upc, late, 0, 0); 296 } 297 298 static void 299 profile_fire(void *arg) 300 { 301 profile_probe_percpu_t *pcpu = arg; 302 profile_probe_t *prof = pcpu->profc_probe; 303 hrtime_t late; 304 305 late = sbt_to_nsec(sbinuptime() - pcpu->profc_expected); 306 307 profile_probe(prof, late); 308 pcpu->profc_expected += pcpu->profc_interval; 309 callout_schedule_sbt_curcpu(&pcpu->profc_cyclic, 310 pcpu->profc_expected, 0, C_DIRECT_EXEC | C_ABSOLUTE); 311 } 312 313 static void 314 profile_tick(void *arg) 315 { 316 profile_probe_t *prof = arg; 317 318 profile_probe(prof, 0); 319 prof->prof_expected += prof->prof_interval; 320 callout_schedule_sbt(&prof->prof_cyclic, 321 prof->prof_expected, 0, C_DIRECT_EXEC | C_ABSOLUTE); 322 } 323 324 static void 325 profile_create(hrtime_t interval, char *name, int kind) 326 { 327 profile_probe_t *prof; 328 329 if (interval < profile_interval_min) 330 return; 331 332 if (dtrace_probe_lookup(profile_id, NULL, NULL, name) != 0) 333 return; 334 335 atomic_add_32(&profile_total, 1); 336 if (profile_total > profile_max) { 337 atomic_add_32(&profile_total, -1); 338 return; 339 } 340 341 prof = kmem_zalloc(sizeof (profile_probe_t), KM_SLEEP); 342 (void) strcpy(prof->prof_name, name); 343 #ifdef illumos 344 prof->prof_interval = interval; 345 prof->prof_cyclic = CYCLIC_NONE; 346 #else 347 prof->prof_interval = nsec_to_sbt(interval); 348 callout_init(&prof->prof_cyclic, 1); 349 #endif 350 prof->prof_kind = kind; 351 prof->prof_id = dtrace_probe_create(profile_id, 352 NULL, NULL, name, 353 profile_aframes, prof); 354 } 355 356 /*ARGSUSED*/ 357 static void 358 profile_provide(void *arg, dtrace_probedesc_t *desc) 359 { 360 int i, j, rate, kind; 361 hrtime_t val = 0, mult = 1, len = 0; 362 char *name, *suffix = NULL; 363 364 const struct { 365 char *prefix; 366 int kind; 367 } types[] = { 368 { PROF_PREFIX_PROFILE, PROF_PROFILE }, 369 { PROF_PREFIX_TICK, PROF_TICK }, 370 { 0, 0 } 371 }; 372 373 const struct { 374 char *name; 375 hrtime_t mult; 376 } suffixes[] = { 377 { "ns", NANOSEC / NANOSEC }, 378 { "nsec", NANOSEC / NANOSEC }, 379 { "us", NANOSEC / MICROSEC }, 380 { "usec", NANOSEC / MICROSEC }, 381 { "ms", NANOSEC / MILLISEC }, 382 { "msec", NANOSEC / MILLISEC }, 383 { "s", NANOSEC / SEC }, 384 { "sec", NANOSEC / SEC }, 385 { "m", NANOSEC * (hrtime_t)60 }, 386 { "min", NANOSEC * (hrtime_t)60 }, 387 { "h", NANOSEC * (hrtime_t)(60 * 60) }, 388 { "hour", NANOSEC * (hrtime_t)(60 * 60) }, 389 { "d", NANOSEC * (hrtime_t)(24 * 60 * 60) }, 390 { "day", NANOSEC * (hrtime_t)(24 * 60 * 60) }, 391 { "hz", 0 }, 392 { NULL } 393 }; 394 395 if (desc == NULL) { 396 char n[PROF_NAMELEN]; 397 398 /* 399 * If no description was provided, provide all of our probes. 400 */ 401 for (i = 0; i < sizeof (profile_rates) / sizeof (int); i++) { 402 if ((rate = profile_rates[i]) == 0) 403 continue; 404 405 (void) snprintf(n, PROF_NAMELEN, "%s%d", 406 PROF_PREFIX_PROFILE, rate); 407 profile_create(NANOSEC / rate, n, PROF_PROFILE); 408 } 409 410 for (i = 0; i < sizeof (profile_ticks) / sizeof (int); i++) { 411 if ((rate = profile_ticks[i]) == 0) 412 continue; 413 414 (void) snprintf(n, PROF_NAMELEN, "%s%d", 415 PROF_PREFIX_TICK, rate); 416 profile_create(NANOSEC / rate, n, PROF_TICK); 417 } 418 419 return; 420 } 421 422 name = desc->dtpd_name; 423 424 for (i = 0; types[i].prefix != NULL; i++) { 425 len = strlen(types[i].prefix); 426 427 if (strncmp(name, types[i].prefix, len) != 0) 428 continue; 429 break; 430 } 431 432 if (types[i].prefix == NULL) 433 return; 434 435 kind = types[i].kind; 436 j = strlen(name) - len; 437 438 /* 439 * We need to start before any time suffix. 440 */ 441 for (j = strlen(name); j >= len; j--) { 442 if (name[j] >= '0' && name[j] <= '9') 443 break; 444 suffix = &name[j]; 445 } 446 447 ASSERT(suffix != NULL); 448 449 /* 450 * Now determine the numerical value present in the probe name. 451 */ 452 for (; j >= len; j--) { 453 if (name[j] < '0' || name[j] > '9') 454 return; 455 456 val += (name[j] - '0') * mult; 457 mult *= (hrtime_t)10; 458 } 459 460 if (val == 0) 461 return; 462 463 /* 464 * Look-up the suffix to determine the multiplier. 465 */ 466 for (i = 0, mult = 0; suffixes[i].name != NULL; i++) { 467 if (strcasecmp(suffixes[i].name, suffix) == 0) { 468 mult = suffixes[i].mult; 469 break; 470 } 471 } 472 473 if (suffixes[i].name == NULL && *suffix != '\0') 474 return; 475 476 if (mult == 0) { 477 /* 478 * The default is frequency-per-second. 479 */ 480 val = NANOSEC / val; 481 } else { 482 val *= mult; 483 } 484 485 profile_create(val, name, kind); 486 } 487 488 /* ARGSUSED */ 489 static void 490 profile_destroy(void *arg, dtrace_id_t id, void *parg) 491 { 492 profile_probe_t *prof = parg; 493 494 #ifdef illumos 495 ASSERT(prof->prof_cyclic == CYCLIC_NONE); 496 #else 497 ASSERT(!callout_active(&prof->prof_cyclic) && prof->prof_pcpus == NULL); 498 #endif 499 kmem_free(prof, sizeof (profile_probe_t)); 500 501 ASSERT(profile_total >= 1); 502 atomic_add_32(&profile_total, -1); 503 } 504 505 #ifdef illumos 506 /*ARGSUSED*/ 507 static void 508 profile_online(void *arg, cpu_t *cpu, cyc_handler_t *hdlr, cyc_time_t *when) 509 { 510 profile_probe_t *prof = arg; 511 profile_probe_percpu_t *pcpu; 512 513 pcpu = kmem_zalloc(sizeof (profile_probe_percpu_t), KM_SLEEP); 514 pcpu->profc_probe = prof; 515 516 hdlr->cyh_func = profile_fire; 517 hdlr->cyh_arg = pcpu; 518 519 when->cyt_interval = prof->prof_interval; 520 when->cyt_when = gethrtime() + when->cyt_interval; 521 522 pcpu->profc_expected = when->cyt_when; 523 pcpu->profc_interval = when->cyt_interval; 524 } 525 526 /*ARGSUSED*/ 527 static void 528 profile_offline(void *arg, cpu_t *cpu, void *oarg) 529 { 530 profile_probe_percpu_t *pcpu = oarg; 531 532 ASSERT(pcpu->profc_probe == arg); 533 kmem_free(pcpu, sizeof (profile_probe_percpu_t)); 534 } 535 536 /* ARGSUSED */ 537 static void 538 profile_enable(void *arg, dtrace_id_t id, void *parg) 539 { 540 profile_probe_t *prof = parg; 541 cyc_omni_handler_t omni; 542 cyc_handler_t hdlr; 543 cyc_time_t when; 544 545 ASSERT(prof->prof_interval != 0); 546 ASSERT(MUTEX_HELD(&cpu_lock)); 547 548 if (prof->prof_kind == PROF_TICK) { 549 hdlr.cyh_func = profile_tick; 550 hdlr.cyh_arg = prof; 551 552 when.cyt_interval = prof->prof_interval; 553 when.cyt_when = gethrtime() + when.cyt_interval; 554 } else { 555 ASSERT(prof->prof_kind == PROF_PROFILE); 556 omni.cyo_online = profile_online; 557 omni.cyo_offline = profile_offline; 558 omni.cyo_arg = prof; 559 } 560 561 if (prof->prof_kind == PROF_TICK) { 562 prof->prof_cyclic = cyclic_add(&hdlr, &when); 563 } else { 564 prof->prof_cyclic = cyclic_add_omni(&omni); 565 } 566 } 567 568 /* ARGSUSED */ 569 static void 570 profile_disable(void *arg, dtrace_id_t id, void *parg) 571 { 572 profile_probe_t *prof = parg; 573 574 ASSERT(prof->prof_cyclic != CYCLIC_NONE); 575 ASSERT(MUTEX_HELD(&cpu_lock)); 576 577 cyclic_remove(prof->prof_cyclic); 578 prof->prof_cyclic = CYCLIC_NONE; 579 } 580 581 #else 582 583 static void 584 profile_enable_omni(profile_probe_t *prof) 585 { 586 profile_probe_percpu_t *pcpu; 587 int cpu; 588 589 prof->prof_pcpus = kmem_zalloc((mp_maxid + 1) * sizeof(pcpu), KM_SLEEP); 590 CPU_FOREACH(cpu) { 591 pcpu = kmem_zalloc(sizeof(profile_probe_percpu_t), KM_SLEEP); 592 prof->prof_pcpus[cpu] = pcpu; 593 pcpu->profc_probe = prof; 594 pcpu->profc_expected = sbinuptime() + prof->prof_interval; 595 pcpu->profc_interval = prof->prof_interval; 596 callout_init(&pcpu->profc_cyclic, 1); 597 callout_reset_sbt_on(&pcpu->profc_cyclic, 598 pcpu->profc_expected, 0, profile_fire, pcpu, 599 cpu, C_DIRECT_EXEC | C_ABSOLUTE); 600 } 601 } 602 603 static void 604 profile_disable_omni(profile_probe_t *prof) 605 { 606 profile_probe_percpu_t *pcpu; 607 int cpu; 608 609 ASSERT(prof->prof_pcpus != NULL); 610 CPU_FOREACH(cpu) { 611 pcpu = prof->prof_pcpus[cpu]; 612 ASSERT(pcpu->profc_probe == prof); 613 ASSERT(callout_active(&pcpu->profc_cyclic)); 614 callout_stop(&pcpu->profc_cyclic); 615 callout_drain(&pcpu->profc_cyclic); 616 kmem_free(pcpu, sizeof(profile_probe_percpu_t)); 617 } 618 kmem_free(prof->prof_pcpus, (mp_maxid + 1) * sizeof(pcpu)); 619 prof->prof_pcpus = NULL; 620 } 621 622 /* ARGSUSED */ 623 static void 624 profile_enable(void *arg, dtrace_id_t id, void *parg) 625 { 626 profile_probe_t *prof = parg; 627 628 if (prof->prof_kind == PROF_TICK) { 629 prof->prof_expected = sbinuptime() + prof->prof_interval; 630 callout_reset_sbt(&prof->prof_cyclic, 631 prof->prof_expected, 0, profile_tick, prof, 632 C_DIRECT_EXEC | C_ABSOLUTE); 633 } else { 634 ASSERT(prof->prof_kind == PROF_PROFILE); 635 profile_enable_omni(prof); 636 } 637 } 638 639 /* ARGSUSED */ 640 static void 641 profile_disable(void *arg, dtrace_id_t id, void *parg) 642 { 643 profile_probe_t *prof = parg; 644 645 if (prof->prof_kind == PROF_TICK) { 646 ASSERT(callout_active(&prof->prof_cyclic)); 647 callout_stop(&prof->prof_cyclic); 648 callout_drain(&prof->prof_cyclic); 649 } else { 650 ASSERT(prof->prof_kind == PROF_PROFILE); 651 profile_disable_omni(prof); 652 } 653 } 654 #endif 655 656 static void 657 profile_load(void *dummy) 658 { 659 /* Create the /dev/dtrace/profile entry. */ 660 profile_cdev = make_dev(&profile_cdevsw, 0, UID_ROOT, GID_WHEEL, 0600, 661 "dtrace/profile"); 662 663 if (dtrace_register("profile", &profile_attr, DTRACE_PRIV_USER, 664 NULL, &profile_pops, NULL, &profile_id) != 0) 665 return; 666 } 667 668 669 static int 670 profile_unload() 671 { 672 int error = 0; 673 674 if ((error = dtrace_unregister(profile_id)) != 0) 675 return (error); 676 677 destroy_dev(profile_cdev); 678 679 return (error); 680 } 681 682 /* ARGSUSED */ 683 static int 684 profile_modevent(module_t mod __unused, int type, void *data __unused) 685 { 686 int error = 0; 687 688 switch (type) { 689 case MOD_LOAD: 690 break; 691 692 case MOD_UNLOAD: 693 break; 694 695 case MOD_SHUTDOWN: 696 break; 697 698 default: 699 error = EOPNOTSUPP; 700 break; 701 702 } 703 return (error); 704 } 705 706 /* ARGSUSED */ 707 static int 708 profile_open(struct cdev *dev __unused, int oflags __unused, int devtype __unused, struct thread *td __unused) 709 { 710 return (0); 711 } 712 713 SYSINIT(profile_load, SI_SUB_DTRACE_PROVIDER, SI_ORDER_ANY, profile_load, NULL); 714 SYSUNINIT(profile_unload, SI_SUB_DTRACE_PROVIDER, SI_ORDER_ANY, profile_unload, NULL); 715 716 DEV_MODULE(profile, profile_modevent, NULL); 717 MODULE_VERSION(profile, 1); 718 MODULE_DEPEND(profile, dtrace, 1, 1, 1); 719 MODULE_DEPEND(profile, opensolaris, 1, 1, 1); 720