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 .dtps_provide = profile_provide, 225 .dtps_provide_module = NULL, 226 .dtps_enable = profile_enable, 227 .dtps_disable = profile_disable, 228 .dtps_suspend = NULL, 229 .dtps_resume = NULL, 230 .dtps_getargdesc = NULL, 231 .dtps_getargval = NULL, 232 .dtps_usermode = NULL, 233 .dtps_destroy = 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 | CTLFLAG_MPSAFE, 0, 243 "DTrace profile parameters"); 244 SYSCTL_INT(_kern_dtrace_profile, OID_AUTO, aframes, CTLFLAG_RW, &profile_aframes, 245 0, "Skipped frames for profile provider"); 246 247 static sbintime_t 248 nsec_to_sbt(hrtime_t nsec) 249 { 250 time_t sec; 251 252 /* 253 * We need to calculate nsec * 2^32 / 10^9 254 * Seconds and nanoseconds are split to avoid overflow. 255 */ 256 sec = nsec / NANOSEC; 257 nsec = nsec % NANOSEC; 258 return (((sbintime_t)sec << 32) | ((sbintime_t)nsec << 32) / NANOSEC); 259 } 260 261 static hrtime_t 262 sbt_to_nsec(sbintime_t sbt) 263 { 264 265 return ((sbt >> 32) * NANOSEC + 266 (((uint32_t)sbt * (hrtime_t)NANOSEC) >> 32)); 267 } 268 269 static void 270 profile_probe(profile_probe_t *prof, hrtime_t late) 271 { 272 struct thread *td; 273 struct trapframe *frame; 274 uintfptr_t pc, upc; 275 276 td = curthread; 277 pc = upc = 0; 278 279 /* 280 * td_intr_frame can be unset if this is a catch-up event upon waking up 281 * from idle sleep. This can only happen on a CPU idle thread. Use a 282 * representative arg0 value in this case so that one of the probe 283 * arguments is non-zero. 284 */ 285 frame = td->td_intr_frame; 286 if (frame != NULL) { 287 if (TRAPF_USERMODE(frame)) 288 upc = TRAPF_PC(frame); 289 else 290 pc = TRAPF_PC(frame); 291 } else if (TD_IS_IDLETHREAD(td)) 292 pc = (uintfptr_t)&cpu_idle; 293 294 dtrace_probe(prof->prof_id, pc, upc, late, 0, 0); 295 } 296 297 static void 298 profile_fire(void *arg) 299 { 300 profile_probe_percpu_t *pcpu = arg; 301 profile_probe_t *prof = pcpu->profc_probe; 302 hrtime_t late; 303 304 late = sbt_to_nsec(sbinuptime() - pcpu->profc_expected); 305 306 profile_probe(prof, late); 307 pcpu->profc_expected += pcpu->profc_interval; 308 callout_schedule_sbt_curcpu(&pcpu->profc_cyclic, 309 pcpu->profc_expected, 0, C_DIRECT_EXEC | C_ABSOLUTE); 310 } 311 312 static void 313 profile_tick(void *arg) 314 { 315 profile_probe_t *prof = arg; 316 317 profile_probe(prof, 0); 318 prof->prof_expected += prof->prof_interval; 319 callout_schedule_sbt(&prof->prof_cyclic, 320 prof->prof_expected, 0, C_DIRECT_EXEC | C_ABSOLUTE); 321 } 322 323 static void 324 profile_create(hrtime_t interval, char *name, int kind) 325 { 326 profile_probe_t *prof; 327 328 if (interval < profile_interval_min) 329 return; 330 331 if (dtrace_probe_lookup(profile_id, NULL, NULL, name) != 0) 332 return; 333 334 atomic_add_32(&profile_total, 1); 335 if (profile_total > profile_max) { 336 atomic_add_32(&profile_total, -1); 337 return; 338 } 339 340 prof = kmem_zalloc(sizeof (profile_probe_t), KM_SLEEP); 341 (void) strcpy(prof->prof_name, name); 342 #ifdef illumos 343 prof->prof_interval = interval; 344 prof->prof_cyclic = CYCLIC_NONE; 345 #else 346 prof->prof_interval = nsec_to_sbt(interval); 347 callout_init(&prof->prof_cyclic, 1); 348 #endif 349 prof->prof_kind = kind; 350 prof->prof_id = dtrace_probe_create(profile_id, 351 NULL, NULL, name, 352 profile_aframes, prof); 353 } 354 355 /*ARGSUSED*/ 356 static void 357 profile_provide(void *arg, dtrace_probedesc_t *desc) 358 { 359 int i, j, rate, kind; 360 hrtime_t val = 0, mult = 1, len = 0; 361 char *name, *suffix = NULL; 362 363 const struct { 364 char *prefix; 365 int kind; 366 } types[] = { 367 { PROF_PREFIX_PROFILE, PROF_PROFILE }, 368 { PROF_PREFIX_TICK, PROF_TICK }, 369 { 0, 0 } 370 }; 371 372 const struct { 373 char *name; 374 hrtime_t mult; 375 } suffixes[] = { 376 { "ns", NANOSEC / NANOSEC }, 377 { "nsec", NANOSEC / NANOSEC }, 378 { "us", NANOSEC / MICROSEC }, 379 { "usec", NANOSEC / MICROSEC }, 380 { "ms", NANOSEC / MILLISEC }, 381 { "msec", NANOSEC / MILLISEC }, 382 { "s", NANOSEC / SEC }, 383 { "sec", NANOSEC / SEC }, 384 { "m", NANOSEC * (hrtime_t)60 }, 385 { "min", NANOSEC * (hrtime_t)60 }, 386 { "h", NANOSEC * (hrtime_t)(60 * 60) }, 387 { "hour", NANOSEC * (hrtime_t)(60 * 60) }, 388 { "d", NANOSEC * (hrtime_t)(24 * 60 * 60) }, 389 { "day", NANOSEC * (hrtime_t)(24 * 60 * 60) }, 390 { "hz", 0 }, 391 { NULL } 392 }; 393 394 if (desc == NULL) { 395 char n[PROF_NAMELEN]; 396 397 /* 398 * If no description was provided, provide all of our probes. 399 */ 400 for (i = 0; i < sizeof (profile_rates) / sizeof (int); i++) { 401 if ((rate = profile_rates[i]) == 0) 402 continue; 403 404 (void) snprintf(n, PROF_NAMELEN, "%s%d", 405 PROF_PREFIX_PROFILE, rate); 406 profile_create(NANOSEC / rate, n, PROF_PROFILE); 407 } 408 409 for (i = 0; i < sizeof (profile_ticks) / sizeof (int); i++) { 410 if ((rate = profile_ticks[i]) == 0) 411 continue; 412 413 (void) snprintf(n, PROF_NAMELEN, "%s%d", 414 PROF_PREFIX_TICK, rate); 415 profile_create(NANOSEC / rate, n, PROF_TICK); 416 } 417 418 return; 419 } 420 421 name = desc->dtpd_name; 422 423 for (i = 0; types[i].prefix != NULL; i++) { 424 len = strlen(types[i].prefix); 425 426 if (strncmp(name, types[i].prefix, len) != 0) 427 continue; 428 break; 429 } 430 431 if (types[i].prefix == NULL) 432 return; 433 434 kind = types[i].kind; 435 j = strlen(name) - len; 436 437 /* 438 * We need to start before any time suffix. 439 */ 440 for (j = strlen(name); j >= len; j--) { 441 if (name[j] >= '0' && name[j] <= '9') 442 break; 443 suffix = &name[j]; 444 } 445 446 ASSERT(suffix != NULL); 447 448 /* 449 * Now determine the numerical value present in the probe name. 450 */ 451 for (; j >= len; j--) { 452 if (name[j] < '0' || name[j] > '9') 453 return; 454 455 val += (name[j] - '0') * mult; 456 mult *= (hrtime_t)10; 457 } 458 459 if (val == 0) 460 return; 461 462 /* 463 * Look-up the suffix to determine the multiplier. 464 */ 465 for (i = 0, mult = 0; suffixes[i].name != NULL; i++) { 466 if (strcasecmp(suffixes[i].name, suffix) == 0) { 467 mult = suffixes[i].mult; 468 break; 469 } 470 } 471 472 if (suffixes[i].name == NULL && *suffix != '\0') 473 return; 474 475 if (mult == 0) { 476 /* 477 * The default is frequency-per-second. 478 */ 479 val = NANOSEC / val; 480 } else { 481 val *= mult; 482 } 483 484 profile_create(val, name, kind); 485 } 486 487 /* ARGSUSED */ 488 static void 489 profile_destroy(void *arg, dtrace_id_t id, void *parg) 490 { 491 profile_probe_t *prof = parg; 492 493 #ifdef illumos 494 ASSERT(prof->prof_cyclic == CYCLIC_NONE); 495 #else 496 ASSERT(!callout_active(&prof->prof_cyclic) && prof->prof_pcpus == NULL); 497 #endif 498 kmem_free(prof, sizeof (profile_probe_t)); 499 500 ASSERT(profile_total >= 1); 501 atomic_add_32(&profile_total, -1); 502 } 503 504 #ifdef illumos 505 /*ARGSUSED*/ 506 static void 507 profile_online(void *arg, cpu_t *cpu, cyc_handler_t *hdlr, cyc_time_t *when) 508 { 509 profile_probe_t *prof = arg; 510 profile_probe_percpu_t *pcpu; 511 512 pcpu = kmem_zalloc(sizeof (profile_probe_percpu_t), KM_SLEEP); 513 pcpu->profc_probe = prof; 514 515 hdlr->cyh_func = profile_fire; 516 hdlr->cyh_arg = pcpu; 517 518 when->cyt_interval = prof->prof_interval; 519 when->cyt_when = gethrtime() + when->cyt_interval; 520 521 pcpu->profc_expected = when->cyt_when; 522 pcpu->profc_interval = when->cyt_interval; 523 } 524 525 /*ARGSUSED*/ 526 static void 527 profile_offline(void *arg, cpu_t *cpu, void *oarg) 528 { 529 profile_probe_percpu_t *pcpu = oarg; 530 531 ASSERT(pcpu->profc_probe == arg); 532 kmem_free(pcpu, sizeof (profile_probe_percpu_t)); 533 } 534 535 /* ARGSUSED */ 536 static void 537 profile_enable(void *arg, dtrace_id_t id, void *parg) 538 { 539 profile_probe_t *prof = parg; 540 cyc_omni_handler_t omni; 541 cyc_handler_t hdlr; 542 cyc_time_t when; 543 544 ASSERT(prof->prof_interval != 0); 545 ASSERT(MUTEX_HELD(&cpu_lock)); 546 547 if (prof->prof_kind == PROF_TICK) { 548 hdlr.cyh_func = profile_tick; 549 hdlr.cyh_arg = prof; 550 551 when.cyt_interval = prof->prof_interval; 552 when.cyt_when = gethrtime() + when.cyt_interval; 553 } else { 554 ASSERT(prof->prof_kind == PROF_PROFILE); 555 omni.cyo_online = profile_online; 556 omni.cyo_offline = profile_offline; 557 omni.cyo_arg = prof; 558 } 559 560 if (prof->prof_kind == PROF_TICK) { 561 prof->prof_cyclic = cyclic_add(&hdlr, &when); 562 } else { 563 prof->prof_cyclic = cyclic_add_omni(&omni); 564 } 565 } 566 567 /* ARGSUSED */ 568 static void 569 profile_disable(void *arg, dtrace_id_t id, void *parg) 570 { 571 profile_probe_t *prof = parg; 572 573 ASSERT(prof->prof_cyclic != CYCLIC_NONE); 574 ASSERT(MUTEX_HELD(&cpu_lock)); 575 576 cyclic_remove(prof->prof_cyclic); 577 prof->prof_cyclic = CYCLIC_NONE; 578 } 579 580 #else 581 582 static void 583 profile_enable_omni(profile_probe_t *prof) 584 { 585 profile_probe_percpu_t *pcpu; 586 int cpu; 587 588 prof->prof_pcpus = kmem_zalloc((mp_maxid + 1) * sizeof(pcpu), KM_SLEEP); 589 CPU_FOREACH(cpu) { 590 pcpu = kmem_zalloc(sizeof(profile_probe_percpu_t), KM_SLEEP); 591 prof->prof_pcpus[cpu] = pcpu; 592 pcpu->profc_probe = prof; 593 pcpu->profc_expected = sbinuptime() + prof->prof_interval; 594 pcpu->profc_interval = prof->prof_interval; 595 callout_init(&pcpu->profc_cyclic, 1); 596 callout_reset_sbt_on(&pcpu->profc_cyclic, 597 pcpu->profc_expected, 0, profile_fire, pcpu, 598 cpu, C_DIRECT_EXEC | C_ABSOLUTE); 599 } 600 } 601 602 static void 603 profile_disable_omni(profile_probe_t *prof) 604 { 605 profile_probe_percpu_t *pcpu; 606 int cpu; 607 608 ASSERT(prof->prof_pcpus != NULL); 609 CPU_FOREACH(cpu) { 610 pcpu = prof->prof_pcpus[cpu]; 611 ASSERT(pcpu->profc_probe == prof); 612 ASSERT(callout_active(&pcpu->profc_cyclic)); 613 callout_stop(&pcpu->profc_cyclic); 614 callout_drain(&pcpu->profc_cyclic); 615 kmem_free(pcpu, sizeof(profile_probe_percpu_t)); 616 } 617 kmem_free(prof->prof_pcpus, (mp_maxid + 1) * sizeof(pcpu)); 618 prof->prof_pcpus = NULL; 619 } 620 621 /* ARGSUSED */ 622 static void 623 profile_enable(void *arg, dtrace_id_t id, void *parg) 624 { 625 profile_probe_t *prof = parg; 626 627 if (prof->prof_kind == PROF_TICK) { 628 prof->prof_expected = sbinuptime() + prof->prof_interval; 629 callout_reset_sbt(&prof->prof_cyclic, 630 prof->prof_expected, 0, profile_tick, prof, 631 C_DIRECT_EXEC | C_ABSOLUTE); 632 } else { 633 ASSERT(prof->prof_kind == PROF_PROFILE); 634 profile_enable_omni(prof); 635 } 636 } 637 638 /* ARGSUSED */ 639 static void 640 profile_disable(void *arg, dtrace_id_t id, void *parg) 641 { 642 profile_probe_t *prof = parg; 643 644 if (prof->prof_kind == PROF_TICK) { 645 ASSERT(callout_active(&prof->prof_cyclic)); 646 callout_stop(&prof->prof_cyclic); 647 callout_drain(&prof->prof_cyclic); 648 } else { 649 ASSERT(prof->prof_kind == PROF_PROFILE); 650 profile_disable_omni(prof); 651 } 652 } 653 #endif 654 655 static void 656 profile_load(void *dummy) 657 { 658 /* Create the /dev/dtrace/profile entry. */ 659 profile_cdev = make_dev(&profile_cdevsw, 0, UID_ROOT, GID_WHEEL, 0600, 660 "dtrace/profile"); 661 662 if (dtrace_register("profile", &profile_attr, DTRACE_PRIV_USER, 663 NULL, &profile_pops, NULL, &profile_id) != 0) 664 return; 665 } 666 667 668 static int 669 profile_unload() 670 { 671 int error = 0; 672 673 if ((error = dtrace_unregister(profile_id)) != 0) 674 return (error); 675 676 destroy_dev(profile_cdev); 677 678 return (error); 679 } 680 681 /* ARGSUSED */ 682 static int 683 profile_modevent(module_t mod __unused, int type, void *data __unused) 684 { 685 int error = 0; 686 687 switch (type) { 688 case MOD_LOAD: 689 break; 690 691 case MOD_UNLOAD: 692 break; 693 694 case MOD_SHUTDOWN: 695 break; 696 697 default: 698 error = EOPNOTSUPP; 699 break; 700 701 } 702 return (error); 703 } 704 705 /* ARGSUSED */ 706 static int 707 profile_open(struct cdev *dev __unused, int oflags __unused, int devtype __unused, struct thread *td __unused) 708 { 709 return (0); 710 } 711 712 SYSINIT(profile_load, SI_SUB_DTRACE_PROVIDER, SI_ORDER_ANY, profile_load, NULL); 713 SYSUNINIT(profile_unload, SI_SUB_DTRACE_PROVIDER, SI_ORDER_ANY, profile_unload, NULL); 714 715 DEV_MODULE(profile, profile_modevent, NULL); 716 MODULE_VERSION(profile, 1); 717 MODULE_DEPEND(profile, dtrace, 1, 1, 1); 718 MODULE_DEPEND(profile, opensolaris, 1, 1, 1); 719