17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*ad4023c4Sdp * Common Development and Distribution License (the "License"). 6*ad4023c4Sdp * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 217c478bd9Sstevel@tonic-gate /* 22*ad4023c4Sdp * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 237c478bd9Sstevel@tonic-gate * Use is subject to license terms. 247c478bd9Sstevel@tonic-gate */ 257c478bd9Sstevel@tonic-gate 267c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 277c478bd9Sstevel@tonic-gate 287c478bd9Sstevel@tonic-gate #include <sys/modctl.h> 297c478bd9Sstevel@tonic-gate #include <sys/sunddi.h> 307c478bd9Sstevel@tonic-gate #include <sys/dtrace.h> 317c478bd9Sstevel@tonic-gate #include <sys/kobj.h> 327c478bd9Sstevel@tonic-gate #include <sys/stat.h> 337c478bd9Sstevel@tonic-gate #include <sys/conf.h> 347c478bd9Sstevel@tonic-gate #include <vm/seg_kmem.h> 357c478bd9Sstevel@tonic-gate #include <sys/stack.h> 367c478bd9Sstevel@tonic-gate #include <sys/sdt_impl.h> 377c478bd9Sstevel@tonic-gate 387c478bd9Sstevel@tonic-gate #define SDT_PATCHVAL 0xf0 397c478bd9Sstevel@tonic-gate #define SDT_ADDR2NDX(addr) ((((uintptr_t)(addr)) >> 4) & sdt_probetab_mask) 407c478bd9Sstevel@tonic-gate #define SDT_PROBETAB_SIZE 0x1000 /* 4k entries -- 16K total */ 417c478bd9Sstevel@tonic-gate 427c478bd9Sstevel@tonic-gate static dev_info_t *sdt_devi; 437c478bd9Sstevel@tonic-gate static int sdt_verbose = 0; 447c478bd9Sstevel@tonic-gate static sdt_probe_t **sdt_probetab; 457c478bd9Sstevel@tonic-gate static int sdt_probetab_size; 467c478bd9Sstevel@tonic-gate static int sdt_probetab_mask; 477c478bd9Sstevel@tonic-gate 487c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 497c478bd9Sstevel@tonic-gate static int 507c478bd9Sstevel@tonic-gate sdt_invop(uintptr_t addr, uintptr_t *stack, uintptr_t eax) 517c478bd9Sstevel@tonic-gate { 527c478bd9Sstevel@tonic-gate uintptr_t stack0, stack1, stack2, stack3, stack4; 537c478bd9Sstevel@tonic-gate int i = 0; 547c478bd9Sstevel@tonic-gate sdt_probe_t *sdt = sdt_probetab[SDT_ADDR2NDX(addr)]; 557c478bd9Sstevel@tonic-gate 567c478bd9Sstevel@tonic-gate #ifdef __amd64 577c478bd9Sstevel@tonic-gate /* 587c478bd9Sstevel@tonic-gate * On amd64, stack[0] contains the dereferenced stack pointer, 597c478bd9Sstevel@tonic-gate * stack[1] contains savfp, stack[2] contains savpc. We want 607c478bd9Sstevel@tonic-gate * to step over these entries. 617c478bd9Sstevel@tonic-gate */ 627c478bd9Sstevel@tonic-gate i += 3; 637c478bd9Sstevel@tonic-gate #endif 647c478bd9Sstevel@tonic-gate 657c478bd9Sstevel@tonic-gate for (; sdt != NULL; sdt = sdt->sdp_hashnext) { 667c478bd9Sstevel@tonic-gate if ((uintptr_t)sdt->sdp_patchpoint == addr) { 677c478bd9Sstevel@tonic-gate /* 687c478bd9Sstevel@tonic-gate * When accessing the arguments on the stack, we must 697c478bd9Sstevel@tonic-gate * protect against accessing beyond the stack. We can 707c478bd9Sstevel@tonic-gate * safely set NOFAULT here -- we know that interrupts 717c478bd9Sstevel@tonic-gate * are already disabled. 727c478bd9Sstevel@tonic-gate */ 737c478bd9Sstevel@tonic-gate DTRACE_CPUFLAG_SET(CPU_DTRACE_NOFAULT); 747c478bd9Sstevel@tonic-gate stack0 = stack[i++]; 757c478bd9Sstevel@tonic-gate stack1 = stack[i++]; 767c478bd9Sstevel@tonic-gate stack2 = stack[i++]; 777c478bd9Sstevel@tonic-gate stack3 = stack[i++]; 787c478bd9Sstevel@tonic-gate stack4 = stack[i++]; 797c478bd9Sstevel@tonic-gate DTRACE_CPUFLAG_CLEAR(CPU_DTRACE_NOFAULT | 807c478bd9Sstevel@tonic-gate CPU_DTRACE_BADADDR); 817c478bd9Sstevel@tonic-gate 827c478bd9Sstevel@tonic-gate dtrace_probe(sdt->sdp_id, stack0, stack1, 837c478bd9Sstevel@tonic-gate stack2, stack3, stack4); 847c478bd9Sstevel@tonic-gate 857c478bd9Sstevel@tonic-gate return (DTRACE_INVOP_NOP); 867c478bd9Sstevel@tonic-gate } 877c478bd9Sstevel@tonic-gate } 887c478bd9Sstevel@tonic-gate 897c478bd9Sstevel@tonic-gate return (0); 907c478bd9Sstevel@tonic-gate } 917c478bd9Sstevel@tonic-gate 927c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 937c478bd9Sstevel@tonic-gate static void 947c478bd9Sstevel@tonic-gate sdt_provide_module(void *arg, struct modctl *ctl) 957c478bd9Sstevel@tonic-gate { 967c478bd9Sstevel@tonic-gate struct module *mp = ctl->mod_mp; 977c478bd9Sstevel@tonic-gate char *modname = ctl->mod_modname; 987c478bd9Sstevel@tonic-gate sdt_probedesc_t *sdpd; 997c478bd9Sstevel@tonic-gate sdt_probe_t *sdp, *old; 1007c478bd9Sstevel@tonic-gate sdt_provider_t *prov; 1017c478bd9Sstevel@tonic-gate int len; 1027c478bd9Sstevel@tonic-gate 1037c478bd9Sstevel@tonic-gate /* 1047c478bd9Sstevel@tonic-gate * One for all, and all for one: if we haven't yet registered all of 1057c478bd9Sstevel@tonic-gate * our providers, we'll refuse to provide anything. 1067c478bd9Sstevel@tonic-gate */ 1077c478bd9Sstevel@tonic-gate for (prov = sdt_providers; prov->sdtp_name != NULL; prov++) { 1087c478bd9Sstevel@tonic-gate if (prov->sdtp_id == DTRACE_PROVNONE) 1097c478bd9Sstevel@tonic-gate return; 1107c478bd9Sstevel@tonic-gate } 1117c478bd9Sstevel@tonic-gate 1127c478bd9Sstevel@tonic-gate if (mp->sdt_nprobes != 0 || (sdpd = mp->sdt_probes) == NULL) 1137c478bd9Sstevel@tonic-gate return; 1147c478bd9Sstevel@tonic-gate 1157c478bd9Sstevel@tonic-gate for (sdpd = mp->sdt_probes; sdpd != NULL; sdpd = sdpd->sdpd_next) { 1167c478bd9Sstevel@tonic-gate char *name = sdpd->sdpd_name, *func, *nname; 1177c478bd9Sstevel@tonic-gate int i, j; 1187c478bd9Sstevel@tonic-gate sdt_provider_t *prov; 1197c478bd9Sstevel@tonic-gate ulong_t offs; 1207c478bd9Sstevel@tonic-gate dtrace_id_t id; 1217c478bd9Sstevel@tonic-gate 1227c478bd9Sstevel@tonic-gate for (prov = sdt_providers; prov->sdtp_prefix != NULL; prov++) { 1237c478bd9Sstevel@tonic-gate char *prefix = prov->sdtp_prefix; 1247c478bd9Sstevel@tonic-gate 1257c478bd9Sstevel@tonic-gate if (strncmp(name, prefix, strlen(prefix)) == 0) { 1267c478bd9Sstevel@tonic-gate name += strlen(prefix); 1277c478bd9Sstevel@tonic-gate break; 1287c478bd9Sstevel@tonic-gate } 1297c478bd9Sstevel@tonic-gate } 1307c478bd9Sstevel@tonic-gate 1317c478bd9Sstevel@tonic-gate nname = kmem_alloc(len = strlen(name) + 1, KM_SLEEP); 1327c478bd9Sstevel@tonic-gate 1337c478bd9Sstevel@tonic-gate for (i = 0, j = 0; name[j] != '\0'; i++) { 1347c478bd9Sstevel@tonic-gate if (name[j] == '_' && name[j + 1] == '_') { 1357c478bd9Sstevel@tonic-gate nname[i] = '-'; 1367c478bd9Sstevel@tonic-gate j += 2; 1377c478bd9Sstevel@tonic-gate } else { 1387c478bd9Sstevel@tonic-gate nname[i] = name[j++]; 1397c478bd9Sstevel@tonic-gate } 1407c478bd9Sstevel@tonic-gate } 1417c478bd9Sstevel@tonic-gate 1427c478bd9Sstevel@tonic-gate nname[i] = '\0'; 1437c478bd9Sstevel@tonic-gate 1447c478bd9Sstevel@tonic-gate sdp = kmem_zalloc(sizeof (sdt_probe_t), KM_SLEEP); 1457c478bd9Sstevel@tonic-gate sdp->sdp_loadcnt = ctl->mod_loadcnt; 1467c478bd9Sstevel@tonic-gate sdp->sdp_ctl = ctl; 1477c478bd9Sstevel@tonic-gate sdp->sdp_name = nname; 1487c478bd9Sstevel@tonic-gate sdp->sdp_namelen = len; 1497c478bd9Sstevel@tonic-gate sdp->sdp_provider = prov; 1507c478bd9Sstevel@tonic-gate 1517c478bd9Sstevel@tonic-gate func = kobj_searchsym(mp, sdpd->sdpd_offset, &offs); 1527c478bd9Sstevel@tonic-gate 1537c478bd9Sstevel@tonic-gate if (func == NULL) 1547c478bd9Sstevel@tonic-gate func = "<unknown>"; 1557c478bd9Sstevel@tonic-gate 1567c478bd9Sstevel@tonic-gate /* 1577c478bd9Sstevel@tonic-gate * We have our provider. Now create the probe. 1587c478bd9Sstevel@tonic-gate */ 1597c478bd9Sstevel@tonic-gate if ((id = dtrace_probe_lookup(prov->sdtp_id, modname, 1607c478bd9Sstevel@tonic-gate func, nname)) != DTRACE_IDNONE) { 1617c478bd9Sstevel@tonic-gate old = dtrace_probe_arg(prov->sdtp_id, id); 1627c478bd9Sstevel@tonic-gate ASSERT(old != NULL); 1637c478bd9Sstevel@tonic-gate 1647c478bd9Sstevel@tonic-gate sdp->sdp_next = old->sdp_next; 1657c478bd9Sstevel@tonic-gate sdp->sdp_id = id; 1667c478bd9Sstevel@tonic-gate old->sdp_next = sdp; 1677c478bd9Sstevel@tonic-gate } else { 1687c478bd9Sstevel@tonic-gate sdp->sdp_id = dtrace_probe_create(prov->sdtp_id, 1697c478bd9Sstevel@tonic-gate modname, func, nname, 3, sdp); 1707c478bd9Sstevel@tonic-gate 1717c478bd9Sstevel@tonic-gate mp->sdt_nprobes++; 1727c478bd9Sstevel@tonic-gate } 1737c478bd9Sstevel@tonic-gate 1747c478bd9Sstevel@tonic-gate sdp->sdp_hashnext = 1757c478bd9Sstevel@tonic-gate sdt_probetab[SDT_ADDR2NDX(sdpd->sdpd_offset)]; 1767c478bd9Sstevel@tonic-gate sdt_probetab[SDT_ADDR2NDX(sdpd->sdpd_offset)] = sdp; 1777c478bd9Sstevel@tonic-gate 1787c478bd9Sstevel@tonic-gate sdp->sdp_patchval = SDT_PATCHVAL; 1797c478bd9Sstevel@tonic-gate sdp->sdp_patchpoint = (uint8_t *)sdpd->sdpd_offset; 1807c478bd9Sstevel@tonic-gate sdp->sdp_savedval = *sdp->sdp_patchpoint; 1817c478bd9Sstevel@tonic-gate } 1827c478bd9Sstevel@tonic-gate } 1837c478bd9Sstevel@tonic-gate 1847c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 1857c478bd9Sstevel@tonic-gate static void 1867c478bd9Sstevel@tonic-gate sdt_destroy(void *arg, dtrace_id_t id, void *parg) 1877c478bd9Sstevel@tonic-gate { 1887c478bd9Sstevel@tonic-gate sdt_probe_t *sdp = parg, *old, *last, *hash; 1897c478bd9Sstevel@tonic-gate struct modctl *ctl = sdp->sdp_ctl; 1907c478bd9Sstevel@tonic-gate int ndx; 1917c478bd9Sstevel@tonic-gate 1927c478bd9Sstevel@tonic-gate if (ctl != NULL && ctl->mod_loadcnt == sdp->sdp_loadcnt) { 1937c478bd9Sstevel@tonic-gate if ((ctl->mod_loadcnt == sdp->sdp_loadcnt && 1947c478bd9Sstevel@tonic-gate ctl->mod_loaded)) { 1957c478bd9Sstevel@tonic-gate ((struct module *)(ctl->mod_mp))->sdt_nprobes--; 1967c478bd9Sstevel@tonic-gate } 1977c478bd9Sstevel@tonic-gate } 1987c478bd9Sstevel@tonic-gate 1997c478bd9Sstevel@tonic-gate while (sdp != NULL) { 2007c478bd9Sstevel@tonic-gate old = sdp; 2017c478bd9Sstevel@tonic-gate 2027c478bd9Sstevel@tonic-gate /* 2037c478bd9Sstevel@tonic-gate * Now we need to remove this probe from the sdt_probetab. 2047c478bd9Sstevel@tonic-gate */ 2057c478bd9Sstevel@tonic-gate ndx = SDT_ADDR2NDX(sdp->sdp_patchpoint); 2067c478bd9Sstevel@tonic-gate last = NULL; 2077c478bd9Sstevel@tonic-gate hash = sdt_probetab[ndx]; 2087c478bd9Sstevel@tonic-gate 2097c478bd9Sstevel@tonic-gate while (hash != sdp) { 2107c478bd9Sstevel@tonic-gate ASSERT(hash != NULL); 2117c478bd9Sstevel@tonic-gate last = hash; 2127c478bd9Sstevel@tonic-gate hash = hash->sdp_hashnext; 2137c478bd9Sstevel@tonic-gate } 2147c478bd9Sstevel@tonic-gate 2157c478bd9Sstevel@tonic-gate if (last != NULL) { 2167c478bd9Sstevel@tonic-gate last->sdp_hashnext = sdp->sdp_hashnext; 2177c478bd9Sstevel@tonic-gate } else { 2187c478bd9Sstevel@tonic-gate sdt_probetab[ndx] = sdp->sdp_hashnext; 2197c478bd9Sstevel@tonic-gate } 2207c478bd9Sstevel@tonic-gate 2217c478bd9Sstevel@tonic-gate kmem_free(sdp->sdp_name, sdp->sdp_namelen); 2227c478bd9Sstevel@tonic-gate sdp = sdp->sdp_next; 2237c478bd9Sstevel@tonic-gate kmem_free(old, sizeof (sdt_probe_t)); 2247c478bd9Sstevel@tonic-gate } 2257c478bd9Sstevel@tonic-gate } 2267c478bd9Sstevel@tonic-gate 2277c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 2287c478bd9Sstevel@tonic-gate static void 2297c478bd9Sstevel@tonic-gate sdt_enable(void *arg, dtrace_id_t id, void *parg) 2307c478bd9Sstevel@tonic-gate { 2317c478bd9Sstevel@tonic-gate sdt_probe_t *sdp = parg; 2327c478bd9Sstevel@tonic-gate struct modctl *ctl = sdp->sdp_ctl; 2337c478bd9Sstevel@tonic-gate 2347c478bd9Sstevel@tonic-gate ctl->mod_nenabled++; 2357c478bd9Sstevel@tonic-gate 2367c478bd9Sstevel@tonic-gate /* 2377c478bd9Sstevel@tonic-gate * If this module has disappeared since we discovered its probes, 2387c478bd9Sstevel@tonic-gate * refuse to enable it. 2397c478bd9Sstevel@tonic-gate */ 2407c478bd9Sstevel@tonic-gate if (!ctl->mod_loaded) { 2417c478bd9Sstevel@tonic-gate if (sdt_verbose) { 2427c478bd9Sstevel@tonic-gate cmn_err(CE_NOTE, "sdt is failing for probe %s " 2437c478bd9Sstevel@tonic-gate "(module %s unloaded)", 2447c478bd9Sstevel@tonic-gate sdp->sdp_name, ctl->mod_modname); 2457c478bd9Sstevel@tonic-gate } 2467c478bd9Sstevel@tonic-gate goto err; 2477c478bd9Sstevel@tonic-gate } 2487c478bd9Sstevel@tonic-gate 2497c478bd9Sstevel@tonic-gate /* 2507c478bd9Sstevel@tonic-gate * Now check that our modctl has the expected load count. If it 2517c478bd9Sstevel@tonic-gate * doesn't, this module must have been unloaded and reloaded -- and 2527c478bd9Sstevel@tonic-gate * we're not going to touch it. 2537c478bd9Sstevel@tonic-gate */ 2547c478bd9Sstevel@tonic-gate if (ctl->mod_loadcnt != sdp->sdp_loadcnt) { 2557c478bd9Sstevel@tonic-gate if (sdt_verbose) { 2567c478bd9Sstevel@tonic-gate cmn_err(CE_NOTE, "sdt is failing for probe %s " 2577c478bd9Sstevel@tonic-gate "(module %s reloaded)", 2587c478bd9Sstevel@tonic-gate sdp->sdp_name, ctl->mod_modname); 2597c478bd9Sstevel@tonic-gate } 2607c478bd9Sstevel@tonic-gate goto err; 2617c478bd9Sstevel@tonic-gate } 2627c478bd9Sstevel@tonic-gate 2637c478bd9Sstevel@tonic-gate while (sdp != NULL) { 2647c478bd9Sstevel@tonic-gate *sdp->sdp_patchpoint = sdp->sdp_patchval; 2657c478bd9Sstevel@tonic-gate sdp = sdp->sdp_next; 2667c478bd9Sstevel@tonic-gate } 2677c478bd9Sstevel@tonic-gate err: 2687c478bd9Sstevel@tonic-gate ; 2697c478bd9Sstevel@tonic-gate } 2707c478bd9Sstevel@tonic-gate 2717c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 2727c478bd9Sstevel@tonic-gate static void 2737c478bd9Sstevel@tonic-gate sdt_disable(void *arg, dtrace_id_t id, void *parg) 2747c478bd9Sstevel@tonic-gate { 2757c478bd9Sstevel@tonic-gate sdt_probe_t *sdp = parg; 2767c478bd9Sstevel@tonic-gate struct modctl *ctl = sdp->sdp_ctl; 2777c478bd9Sstevel@tonic-gate 2787c478bd9Sstevel@tonic-gate ctl->mod_nenabled--; 2797c478bd9Sstevel@tonic-gate 2807c478bd9Sstevel@tonic-gate if (!ctl->mod_loaded || ctl->mod_loadcnt != sdp->sdp_loadcnt) 2817c478bd9Sstevel@tonic-gate goto err; 2827c478bd9Sstevel@tonic-gate 2837c478bd9Sstevel@tonic-gate while (sdp != NULL) { 2847c478bd9Sstevel@tonic-gate *sdp->sdp_patchpoint = sdp->sdp_savedval; 2857c478bd9Sstevel@tonic-gate sdp = sdp->sdp_next; 2867c478bd9Sstevel@tonic-gate } 2877c478bd9Sstevel@tonic-gate 2887c478bd9Sstevel@tonic-gate err: 2897c478bd9Sstevel@tonic-gate ; 2907c478bd9Sstevel@tonic-gate } 2917c478bd9Sstevel@tonic-gate 2927c478bd9Sstevel@tonic-gate static dtrace_pops_t sdt_pops = { 2937c478bd9Sstevel@tonic-gate NULL, 2947c478bd9Sstevel@tonic-gate sdt_provide_module, 2957c478bd9Sstevel@tonic-gate sdt_enable, 2967c478bd9Sstevel@tonic-gate sdt_disable, 2977c478bd9Sstevel@tonic-gate NULL, 2987c478bd9Sstevel@tonic-gate NULL, 2997c478bd9Sstevel@tonic-gate sdt_getargdesc, 3007c478bd9Sstevel@tonic-gate NULL, 3017c478bd9Sstevel@tonic-gate NULL, 3027c478bd9Sstevel@tonic-gate sdt_destroy 3037c478bd9Sstevel@tonic-gate }; 3047c478bd9Sstevel@tonic-gate 3057c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 3067c478bd9Sstevel@tonic-gate static int 3077c478bd9Sstevel@tonic-gate sdt_attach(dev_info_t *devi, ddi_attach_cmd_t cmd) 3087c478bd9Sstevel@tonic-gate { 3097c478bd9Sstevel@tonic-gate sdt_provider_t *prov; 3107c478bd9Sstevel@tonic-gate 3117c478bd9Sstevel@tonic-gate if (ddi_create_minor_node(devi, "sdt", S_IFCHR, 3127c478bd9Sstevel@tonic-gate 0, DDI_PSEUDO, NULL) == DDI_FAILURE) { 3137c478bd9Sstevel@tonic-gate cmn_err(CE_NOTE, "/dev/sdt couldn't create minor node"); 3147c478bd9Sstevel@tonic-gate ddi_remove_minor_node(devi, NULL); 3157c478bd9Sstevel@tonic-gate return (DDI_FAILURE); 3167c478bd9Sstevel@tonic-gate } 3177c478bd9Sstevel@tonic-gate 3187c478bd9Sstevel@tonic-gate ddi_report_dev(devi); 3197c478bd9Sstevel@tonic-gate sdt_devi = devi; 3207c478bd9Sstevel@tonic-gate 3217c478bd9Sstevel@tonic-gate if (sdt_probetab_size == 0) 3227c478bd9Sstevel@tonic-gate sdt_probetab_size = SDT_PROBETAB_SIZE; 3237c478bd9Sstevel@tonic-gate 3247c478bd9Sstevel@tonic-gate sdt_probetab_mask = sdt_probetab_size - 1; 3257c478bd9Sstevel@tonic-gate sdt_probetab = 3267c478bd9Sstevel@tonic-gate kmem_zalloc(sdt_probetab_size * sizeof (sdt_probe_t *), KM_SLEEP); 3277c478bd9Sstevel@tonic-gate dtrace_invop_add(sdt_invop); 3287c478bd9Sstevel@tonic-gate 3297c478bd9Sstevel@tonic-gate for (prov = sdt_providers; prov->sdtp_name != NULL; prov++) { 3307c478bd9Sstevel@tonic-gate if (dtrace_register(prov->sdtp_name, prov->sdtp_attr, 331*ad4023c4Sdp DTRACE_PRIV_KERNEL, NULL, 3327c478bd9Sstevel@tonic-gate &sdt_pops, prov, &prov->sdtp_id) != 0) { 3337c478bd9Sstevel@tonic-gate cmn_err(CE_WARN, "failed to register sdt provider %s", 3347c478bd9Sstevel@tonic-gate prov->sdtp_name); 3357c478bd9Sstevel@tonic-gate } 3367c478bd9Sstevel@tonic-gate } 3377c478bd9Sstevel@tonic-gate 3387c478bd9Sstevel@tonic-gate return (DDI_SUCCESS); 3397c478bd9Sstevel@tonic-gate } 3407c478bd9Sstevel@tonic-gate 3417c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 3427c478bd9Sstevel@tonic-gate static int 3437c478bd9Sstevel@tonic-gate sdt_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 3447c478bd9Sstevel@tonic-gate { 3457c478bd9Sstevel@tonic-gate sdt_provider_t *prov; 3467c478bd9Sstevel@tonic-gate 3477c478bd9Sstevel@tonic-gate switch (cmd) { 3487c478bd9Sstevel@tonic-gate case DDI_DETACH: 3497c478bd9Sstevel@tonic-gate break; 3507c478bd9Sstevel@tonic-gate 3517c478bd9Sstevel@tonic-gate case DDI_SUSPEND: 3527c478bd9Sstevel@tonic-gate return (DDI_SUCCESS); 3537c478bd9Sstevel@tonic-gate 3547c478bd9Sstevel@tonic-gate default: 3557c478bd9Sstevel@tonic-gate return (DDI_FAILURE); 3567c478bd9Sstevel@tonic-gate } 3577c478bd9Sstevel@tonic-gate 3587c478bd9Sstevel@tonic-gate for (prov = sdt_providers; prov->sdtp_name != NULL; prov++) { 3597c478bd9Sstevel@tonic-gate if (prov->sdtp_id != DTRACE_PROVNONE) { 3607c478bd9Sstevel@tonic-gate if (dtrace_unregister(prov->sdtp_id) != 0) 3617c478bd9Sstevel@tonic-gate return (DDI_FAILURE); 3627c478bd9Sstevel@tonic-gate 3637c478bd9Sstevel@tonic-gate prov->sdtp_id = DTRACE_PROVNONE; 3647c478bd9Sstevel@tonic-gate } 3657c478bd9Sstevel@tonic-gate } 3667c478bd9Sstevel@tonic-gate 3677c478bd9Sstevel@tonic-gate dtrace_invop_remove(sdt_invop); 3687c478bd9Sstevel@tonic-gate kmem_free(sdt_probetab, sdt_probetab_size * sizeof (sdt_probe_t *)); 3697c478bd9Sstevel@tonic-gate 3707c478bd9Sstevel@tonic-gate return (DDI_SUCCESS); 3717c478bd9Sstevel@tonic-gate } 3727c478bd9Sstevel@tonic-gate 3737c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 3747c478bd9Sstevel@tonic-gate static int 3757c478bd9Sstevel@tonic-gate sdt_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) 3767c478bd9Sstevel@tonic-gate { 3777c478bd9Sstevel@tonic-gate int error; 3787c478bd9Sstevel@tonic-gate 3797c478bd9Sstevel@tonic-gate switch (infocmd) { 3807c478bd9Sstevel@tonic-gate case DDI_INFO_DEVT2DEVINFO: 3817c478bd9Sstevel@tonic-gate *result = (void *)sdt_devi; 3827c478bd9Sstevel@tonic-gate error = DDI_SUCCESS; 3837c478bd9Sstevel@tonic-gate break; 3847c478bd9Sstevel@tonic-gate case DDI_INFO_DEVT2INSTANCE: 3857c478bd9Sstevel@tonic-gate *result = (void *)0; 3867c478bd9Sstevel@tonic-gate error = DDI_SUCCESS; 3877c478bd9Sstevel@tonic-gate break; 3887c478bd9Sstevel@tonic-gate default: 3897c478bd9Sstevel@tonic-gate error = DDI_FAILURE; 3907c478bd9Sstevel@tonic-gate } 3917c478bd9Sstevel@tonic-gate return (error); 3927c478bd9Sstevel@tonic-gate } 3937c478bd9Sstevel@tonic-gate 3947c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 3957c478bd9Sstevel@tonic-gate static int 3967c478bd9Sstevel@tonic-gate sdt_open(dev_t *devp, int flag, int otyp, cred_t *cred_p) 3977c478bd9Sstevel@tonic-gate { 3987c478bd9Sstevel@tonic-gate return (0); 3997c478bd9Sstevel@tonic-gate } 4007c478bd9Sstevel@tonic-gate 4017c478bd9Sstevel@tonic-gate static struct cb_ops sdt_cb_ops = { 4027c478bd9Sstevel@tonic-gate sdt_open, /* open */ 4037c478bd9Sstevel@tonic-gate nodev, /* close */ 4047c478bd9Sstevel@tonic-gate nulldev, /* strategy */ 4057c478bd9Sstevel@tonic-gate nulldev, /* print */ 4067c478bd9Sstevel@tonic-gate nodev, /* dump */ 4077c478bd9Sstevel@tonic-gate nodev, /* read */ 4087c478bd9Sstevel@tonic-gate nodev, /* write */ 4097c478bd9Sstevel@tonic-gate nodev, /* ioctl */ 4107c478bd9Sstevel@tonic-gate nodev, /* devmap */ 4117c478bd9Sstevel@tonic-gate nodev, /* mmap */ 4127c478bd9Sstevel@tonic-gate nodev, /* segmap */ 4137c478bd9Sstevel@tonic-gate nochpoll, /* poll */ 4147c478bd9Sstevel@tonic-gate ddi_prop_op, /* cb_prop_op */ 4157c478bd9Sstevel@tonic-gate 0, /* streamtab */ 4167c478bd9Sstevel@tonic-gate D_NEW | D_MP /* Driver compatibility flag */ 4177c478bd9Sstevel@tonic-gate }; 4187c478bd9Sstevel@tonic-gate 4197c478bd9Sstevel@tonic-gate static struct dev_ops sdt_ops = { 4207c478bd9Sstevel@tonic-gate DEVO_REV, /* devo_rev, */ 4217c478bd9Sstevel@tonic-gate 0, /* refcnt */ 4227c478bd9Sstevel@tonic-gate sdt_info, /* get_dev_info */ 4237c478bd9Sstevel@tonic-gate nulldev, /* identify */ 4247c478bd9Sstevel@tonic-gate nulldev, /* probe */ 4257c478bd9Sstevel@tonic-gate sdt_attach, /* attach */ 4267c478bd9Sstevel@tonic-gate sdt_detach, /* detach */ 4277c478bd9Sstevel@tonic-gate nodev, /* reset */ 4287c478bd9Sstevel@tonic-gate &sdt_cb_ops, /* driver operations */ 4297c478bd9Sstevel@tonic-gate NULL, /* bus operations */ 4307c478bd9Sstevel@tonic-gate nodev /* dev power */ 4317c478bd9Sstevel@tonic-gate }; 4327c478bd9Sstevel@tonic-gate 4337c478bd9Sstevel@tonic-gate /* 4347c478bd9Sstevel@tonic-gate * Module linkage information for the kernel. 4357c478bd9Sstevel@tonic-gate */ 4367c478bd9Sstevel@tonic-gate static struct modldrv modldrv = { 4377c478bd9Sstevel@tonic-gate &mod_driverops, /* module type (this is a pseudo driver) */ 4387c478bd9Sstevel@tonic-gate "Statically Defined Tracing", /* name of module */ 4397c478bd9Sstevel@tonic-gate &sdt_ops, /* driver ops */ 4407c478bd9Sstevel@tonic-gate }; 4417c478bd9Sstevel@tonic-gate 4427c478bd9Sstevel@tonic-gate static struct modlinkage modlinkage = { 4437c478bd9Sstevel@tonic-gate MODREV_1, 4447c478bd9Sstevel@tonic-gate (void *)&modldrv, 4457c478bd9Sstevel@tonic-gate NULL 4467c478bd9Sstevel@tonic-gate }; 4477c478bd9Sstevel@tonic-gate 4487c478bd9Sstevel@tonic-gate int 4497c478bd9Sstevel@tonic-gate _init(void) 4507c478bd9Sstevel@tonic-gate { 4517c478bd9Sstevel@tonic-gate return (mod_install(&modlinkage)); 4527c478bd9Sstevel@tonic-gate } 4537c478bd9Sstevel@tonic-gate 4547c478bd9Sstevel@tonic-gate int 4557c478bd9Sstevel@tonic-gate _info(struct modinfo *modinfop) 4567c478bd9Sstevel@tonic-gate { 4577c478bd9Sstevel@tonic-gate return (mod_info(&modlinkage, modinfop)); 4587c478bd9Sstevel@tonic-gate } 4597c478bd9Sstevel@tonic-gate 4607c478bd9Sstevel@tonic-gate int 4617c478bd9Sstevel@tonic-gate _fini(void) 4627c478bd9Sstevel@tonic-gate { 4637c478bd9Sstevel@tonic-gate return (mod_remove(&modlinkage)); 4647c478bd9Sstevel@tonic-gate } 465