diff --git a/sys/cddl/dev/dtrace/dtrace_cddl.h b/sys/cddl/dev/dtrace/dtrace_cddl.h index 42a4721fbb90..c151c8cf9660 100644 --- a/sys/cddl/dev/dtrace/dtrace_cddl.h +++ b/sys/cddl/dev/dtrace/dtrace_cddl.h @@ -1,174 +1,175 @@ /* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END * */ #ifndef _DTRACE_CDDL_H_ #define _DTRACE_CDDL_H_ #include /* * Kernel DTrace extension to 'struct proc' for FreeBSD. */ typedef struct kdtrace_proc { int p_dtrace_probes; /* Are there probes for this proc? */ uint64_t p_dtrace_count; /* Number of DTrace tracepoints */ void *p_dtrace_helpers; /* DTrace helpers, if any */ int p_dtrace_model; uint64_t p_fasttrap_tp_gen; /* Tracepoint hash table gen */ } kdtrace_proc_t; /* * Kernel DTrace extension to 'struct thread' for FreeBSD. */ typedef struct kdtrace_thread { uint8_t td_dtrace_stop; /* Indicates a DTrace-desired stop */ uint8_t td_dtrace_sig; /* Signal sent via DTrace's raise() */ uint8_t td_dtrace_inprobe; /* Are we in a probe? */ u_int td_predcache; /* DTrace predicate cache */ uint64_t td_dtrace_vtime; /* DTrace virtual time */ uint64_t td_dtrace_start; /* DTrace slice start time */ union __tdu { struct __tds { uint8_t _td_dtrace_on; /* Hit a fasttrap tracepoint. */ uint8_t _td_dtrace_step; /* About to return to kernel. */ uint8_t _td_dtrace_ret; /* Handling a return probe. */ uint8_t _td_dtrace_ast; /* Saved ast flag. */ #ifdef __amd64__ uint8_t _td_dtrace_reg; #endif } _tds; u_long _td_dtrace_ft; /* Bitwise or of these flags. */ } _tdu; #define td_dtrace_ft _tdu._td_dtrace_ft #define td_dtrace_on _tdu._tds._td_dtrace_on #define td_dtrace_step _tdu._tds._td_dtrace_step #define td_dtrace_ret _tdu._tds._td_dtrace_ret #define td_dtrace_ast _tdu._tds._td_dtrace_ast #define td_dtrace_reg _tdu._tds._td_dtrace_reg uintptr_t td_dtrace_pc; /* DTrace saved pc from fasttrap. */ uintptr_t td_dtrace_npc; /* DTrace next pc from fasttrap. */ uintptr_t td_dtrace_scrpc; /* DTrace per-thread scratch location. */ uintptr_t td_dtrace_astpc; /* DTrace return sequence location. */ #ifdef __amd64__ uintptr_t td_dtrace_regv; #endif - uint64_t td_hrtime; /* Last time on cpu. */ + uintptr_t td_dtrace_sdt_arg[1]; /* Space for extra SDT args */ void *td_dtrace_sscr; /* Saved scratch space location. */ void *td_systrace_args; /* syscall probe arguments. */ uint64_t td_fasttrap_tp_gen; /* Tracepoint hash table gen. */ struct trapframe *td_dtrace_trapframe; /* Trap frame from invop. */ void *td_kinst_tramp; } kdtrace_thread_t; /* * Definitions to reference fields in the FreeBSD DTrace structures defined * above using the names of fields in similar structures in Solaris. Note * that the separation on FreeBSD is a licensing constraint designed to * keep the GENERIC kernel BSD licensed. */ #define t_dtrace_vtime td_dtrace->td_dtrace_vtime #define t_dtrace_start td_dtrace->td_dtrace_start #define t_dtrace_stop td_dtrace->td_dtrace_stop #define t_dtrace_sig td_dtrace->td_dtrace_sig #define t_dtrace_inprobe td_dtrace->td_dtrace_inprobe #define t_predcache td_dtrace->td_predcache #define t_dtrace_ft td_dtrace->td_dtrace_ft #define t_dtrace_on td_dtrace->td_dtrace_on #define t_dtrace_step td_dtrace->td_dtrace_step #define t_dtrace_ret td_dtrace->td_dtrace_ret #define t_dtrace_ast td_dtrace->td_dtrace_ast #define t_dtrace_reg td_dtrace->td_dtrace_reg #define t_dtrace_pc td_dtrace->td_dtrace_pc #define t_dtrace_npc td_dtrace->td_dtrace_npc #define t_dtrace_scrpc td_dtrace->td_dtrace_scrpc #define t_dtrace_astpc td_dtrace->td_dtrace_astpc #define t_dtrace_regv td_dtrace->td_dtrace_regv +#define t_dtrace_sdt_arg td_dtrace->td_dtrace_sdt_arg #define t_dtrace_sscr td_dtrace->td_dtrace_sscr #define t_dtrace_systrace_args td_dtrace->td_systrace_args #define t_fasttrap_tp_gen td_dtrace->td_fasttrap_tp_gen #define t_dtrace_trapframe td_dtrace->td_dtrace_trapframe #define t_kinst_tramp td_dtrace->td_kinst_tramp #define p_dtrace_helpers p_dtrace->p_dtrace_helpers #define p_dtrace_count p_dtrace->p_dtrace_count #define p_dtrace_probes p_dtrace->p_dtrace_probes #define p_model p_dtrace->p_dtrace_model #define p_fasttrap_tp_gen p_dtrace->p_fasttrap_tp_gen #define DATAMODEL_NATIVE 0 #ifdef __amd64__ #define DATAMODEL_LP64 0 #define DATAMODEL_ILP32 1 #else #define DATAMODEL_LP64 1 #define DATAMODEL_ILP32 0 #endif /* * Definitions for fields in struct proc which are named differently in FreeBSD. */ #define p_cred p_ucred #define p_parent p_pptr /* * Definitions for fields in struct thread which are named differently in FreeBSD. */ #define t_procp td_proc #define t_tid td_tid #define t_did td_tid #define t_cred td_ucred int priv_policy(const cred_t *, int, boolean_t, int, const char *); boolean_t priv_policy_only(const cred_t *, int, boolean_t); boolean_t priv_policy_choice(const cred_t *, int, boolean_t); /* * Test privilege. Audit success or failure, allow privilege debugging. * Returns 0 for success, err for failure. */ #define PRIV_POLICY(cred, priv, all, err, reason) \ priv_policy((cred), (priv), (all), (err), (reason)) /* * Test privilege. Audit success only, no privilege debugging. * Returns 1 for success, and 0 for failure. */ #define PRIV_POLICY_CHOICE(cred, priv, all) \ priv_policy_choice((cred), (priv), (all)) /* * Test privilege. No priv_debugging, no auditing. * Returns 1 for success, and 0 for failure. */ #define PRIV_POLICY_ONLY(cred, priv, all) \ priv_policy_only((cred), (priv), (all)) #endif /* !_DTRACE_CDDL_H_ */ diff --git a/sys/cddl/dev/sdt/sdt.c b/sys/cddl/dev/sdt/sdt.c index 51fa0432437c..461f454186a3 100644 --- a/sys/cddl/dev/sdt/sdt.c +++ b/sys/cddl/dev/sdt/sdt.c @@ -1,517 +1,544 @@ /* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END * * Portions Copyright 2006-2008 John Birrell jb@freebsd.org * Copyright 2024 Mark Johnston */ /* * This file contains a reimplementation of the statically-defined tracing (SDT) * framework for DTrace. Probes and SDT providers are defined using the macros * in sys/sdt.h, which append all the needed structures to linker sets. When * this module is loaded, it iterates over all of the loaded modules and * registers probes and providers with the DTrace framework based on the * contents of these linker sets. * * A list of SDT providers is maintained here since a provider may span multiple * modules. When a kernel module is unloaded, a provider defined in that module * is unregistered only if no other modules refer to it. The DTrace framework is * responsible for destroying individual probes when a kernel module is * unloaded; in particular, probes may not span multiple kernel modules. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include +#include + /* DTrace methods. */ static void sdt_getargdesc(void *, dtrace_id_t, void *, dtrace_argdesc_t *); +static uint64_t sdt_getargval(void *, dtrace_id_t, void *, int, int); static void sdt_provide_probes(void *, dtrace_probedesc_t *); static void sdt_destroy(void *, dtrace_id_t, void *); static void sdt_enable(void *, dtrace_id_t, void *); static void sdt_disable(void *, dtrace_id_t, void *); static void sdt_load(void); static int sdt_unload(void); static void sdt_create_provider(struct sdt_provider *); static void sdt_create_probe(struct sdt_probe *); static void sdt_kld_load(void *, struct linker_file *); static void sdt_kld_unload_try(void *, struct linker_file *, int *); static MALLOC_DEFINE(M_SDT, "SDT", "DTrace SDT providers"); static int sdt_probes_enabled_count; static int lockstat_enabled_count; static dtrace_pattr_t sdt_attr = { { DTRACE_STABILITY_EVOLVING, DTRACE_STABILITY_EVOLVING, DTRACE_CLASS_COMMON }, { DTRACE_STABILITY_PRIVATE, DTRACE_STABILITY_PRIVATE, DTRACE_CLASS_UNKNOWN }, { DTRACE_STABILITY_PRIVATE, DTRACE_STABILITY_PRIVATE, DTRACE_CLASS_ISA }, { DTRACE_STABILITY_EVOLVING, DTRACE_STABILITY_EVOLVING, DTRACE_CLASS_COMMON }, { DTRACE_STABILITY_PRIVATE, DTRACE_STABILITY_PRIVATE, DTRACE_CLASS_ISA }, }; static dtrace_pops_t sdt_pops = { .dtps_provide = sdt_provide_probes, .dtps_provide_module = NULL, .dtps_enable = sdt_enable, .dtps_disable = sdt_disable, .dtps_suspend = NULL, .dtps_resume = NULL, .dtps_getargdesc = sdt_getargdesc, - .dtps_getargval = NULL, + .dtps_getargval = sdt_getargval, .dtps_usermode = NULL, .dtps_destroy = sdt_destroy, }; static TAILQ_HEAD(, sdt_provider) sdt_prov_list; static eventhandler_tag sdt_kld_load_tag; static eventhandler_tag sdt_kld_unload_try_tag; static void sdt_create_provider(struct sdt_provider *prov) { struct sdt_provider *curr, *newprov; TAILQ_FOREACH(curr, &sdt_prov_list, prov_entry) if (strcmp(prov->name, curr->name) == 0) { /* The provider has already been defined. */ curr->sdt_refs++; return; } /* * Make a copy of prov so that we don't lose fields if its module is * unloaded but the provider isn't destroyed. This could happen with * a provider that spans multiple modules. */ newprov = malloc(sizeof(*newprov), M_SDT, M_WAITOK | M_ZERO); newprov->name = strdup(prov->name, M_SDT); prov->sdt_refs = newprov->sdt_refs = 1; TAILQ_INSERT_TAIL(&sdt_prov_list, newprov, prov_entry); (void)dtrace_register(newprov->name, &sdt_attr, DTRACE_PRIV_USER, NULL, &sdt_pops, NULL, (dtrace_provider_id_t *)&newprov->id); prov->id = newprov->id; } static void sdt_create_probe(struct sdt_probe *probe) { struct sdt_provider *prov; char mod[DTRACE_MODNAMELEN]; char func[DTRACE_FUNCNAMELEN]; char name[DTRACE_NAMELEN]; const char *from; char *to; size_t len; if (probe->version != (int)sizeof(*probe)) { printf("ignoring probe %p, version %u expected %u\n", probe, probe->version, (int)sizeof(*probe)); return; } TAILQ_FOREACH(prov, &sdt_prov_list, prov_entry) if (strcmp(prov->name, probe->prov->name) == 0) break; KASSERT(prov != NULL, ("probe defined without a provider")); /* If no module name was specified, use the module filename. */ if (*probe->mod == 0) { len = strlcpy(mod, probe->sdtp_lf->filename, sizeof(mod)); if (len > 3 && strcmp(mod + len - 3, ".ko") == 0) mod[len - 3] = '\0'; } else strlcpy(mod, probe->mod, sizeof(mod)); /* * Unfortunately this is necessary because the Solaris DTrace * code mixes consts and non-consts with casts to override * the incompatibilies. On FreeBSD, we use strict warnings * in the C compiler, so we have to respect const vs non-const. */ strlcpy(func, probe->func, sizeof(func)); if (func[0] == '\0') strcpy(func, "none"); from = probe->name; to = name; for (len = 0; len < (sizeof(name) - 1) && *from != '\0'; len++, from++, to++) { if (from[0] == '_' && from[1] == '_') { *to = '-'; from++; } else *to = *from; } *to = '\0'; if (dtrace_probe_lookup(prov->id, mod, func, name) != DTRACE_IDNONE) return; (void)dtrace_probe_create(prov->id, mod, func, name, 0, probe); } /* * Probes are created through the SDT module load/unload hook, so this function * has nothing to do. It only exists because the DTrace provider framework * requires one of provide_probes and provide_module to be defined. */ static void sdt_provide_probes(void *arg, dtrace_probedesc_t *desc) { } struct sdt_enable_cb_arg { struct sdt_probe *probe; int cpu; int arrived; int done; bool enable; }; static void sdt_probe_update_cb(void *_arg) { struct sdt_enable_cb_arg *arg; struct sdt_tracepoint *tp; arg = _arg; if (arg->cpu != curcpu) { atomic_add_rel_int(&arg->arrived, 1); while (atomic_load_acq_int(&arg->done) == 0) cpu_spinwait(); return; } else { while (atomic_load_acq_int(&arg->arrived) != mp_ncpus - 1) cpu_spinwait(); } STAILQ_FOREACH(tp, &arg->probe->tracepoint_list, tracepoint_entry) { if (arg->enable) sdt_tracepoint_patch(tp->patchpoint, tp->target); else sdt_tracepoint_restore(tp->patchpoint); } atomic_store_rel_int(&arg->done, 1); } static void sdt_probe_update(struct sdt_probe *probe, bool enable) { struct sdt_enable_cb_arg cbarg; sched_pin(); cbarg.probe = probe; cbarg.cpu = curcpu; atomic_store_rel_int(&cbarg.arrived, 0); atomic_store_rel_int(&cbarg.done, 0); cbarg.enable = enable; smp_rendezvous(NULL, sdt_probe_update_cb, NULL, &cbarg); sched_unpin(); } static void sdt_enable(void *arg __unused, dtrace_id_t id, void *parg) { struct sdt_probe *probe; probe = parg; probe->id = id; probe->sdtp_lf->nenabled++; if (strcmp(probe->prov->name, "lockstat") == 0) { lockstat_enabled_count++; if (lockstat_enabled_count == 1) lockstat_enabled = true; } sdt_probes_enabled_count++; if (sdt_probes_enabled_count == 1) sdt_probes_enabled = true; sdt_probe_update(probe, true); } static void sdt_disable(void *arg __unused, dtrace_id_t id, void *parg) { struct sdt_probe *probe; probe = parg; KASSERT(probe->sdtp_lf->nenabled > 0, ("no probes enabled")); sdt_probe_update(probe, false); sdt_probes_enabled_count--; if (sdt_probes_enabled_count == 0) sdt_probes_enabled = false; if (strcmp(probe->prov->name, "lockstat") == 0) { lockstat_enabled_count--; if (lockstat_enabled_count == 0) lockstat_enabled = false; } probe->id = 0; probe->sdtp_lf->nenabled--; } static void sdt_getargdesc(void *arg, dtrace_id_t id, void *parg, dtrace_argdesc_t *desc) { struct sdt_argtype *argtype; struct sdt_probe *probe = parg; if (desc->dtargd_ndx >= probe->n_args) { desc->dtargd_ndx = DTRACE_ARGNONE; return; } TAILQ_FOREACH(argtype, &probe->argtype_list, argtype_entry) { if (desc->dtargd_ndx == argtype->ndx) { desc->dtargd_mapping = desc->dtargd_ndx; if (argtype->type == NULL) { desc->dtargd_native[0] = '\0'; desc->dtargd_xlate[0] = '\0'; continue; } strlcpy(desc->dtargd_native, argtype->type, sizeof(desc->dtargd_native)); if (argtype->xtype != NULL) strlcpy(desc->dtargd_xlate, argtype->xtype, sizeof(desc->dtargd_xlate)); } } } +/* + * Fetch arguments beyond the first five passed directly to dtrace_probe(). + * FreeBSD's SDT implement currently only supports up to 6 arguments, so we just + * need to handle arg5 here. + */ +static uint64_t +sdt_getargval(void *arg __unused, dtrace_id_t id __unused, + void *parg __unused, int argno, int aframes __unused) +{ + if (argno != 5) { + DTRACE_CPUFLAG_SET(CPU_DTRACE_ILLOP); + return (0); + } else { + return (curthread->t_dtrace_sdt_arg[argno - 5]); + } +} + static void sdt_destroy(void *arg, dtrace_id_t id, void *parg) { } static void sdt_kld_load_providers(struct linker_file *lf) { struct sdt_provider **prov, **begin, **end; if (linker_file_lookup_set(lf, "sdt_providers_set", &begin, &end, NULL) == 0) { for (prov = begin; prov < end; prov++) sdt_create_provider(*prov); } } static void sdt_kld_load_probes(struct linker_file *lf) { struct sdt_probe **p_begin, **p_end; struct sdt_argtype **a_begin, **a_end; struct sdt_tracepoint *tp_begin, *tp_end; if (linker_file_lookup_set(lf, "sdt_probes_set", &p_begin, &p_end, NULL) == 0) { for (struct sdt_probe **probe = p_begin; probe < p_end; probe++) { (*probe)->sdtp_lf = lf; sdt_create_probe(*probe); TAILQ_INIT(&(*probe)->argtype_list); STAILQ_INIT(&(*probe)->tracepoint_list); } } if (linker_file_lookup_set(lf, "sdt_argtypes_set", &a_begin, &a_end, NULL) == 0) { for (struct sdt_argtype **argtype = a_begin; argtype < a_end; argtype++) { (*argtype)->probe->n_args++; TAILQ_INSERT_TAIL(&(*argtype)->probe->argtype_list, *argtype, argtype_entry); } } if (linker_file_lookup_set(lf, __XSTRING(_SDT_TRACEPOINT_SET), &tp_begin, &tp_end, NULL) == 0) { for (struct sdt_tracepoint *tp = tp_begin; tp < tp_end; tp++) { if (!sdt_tracepoint_valid(tp->patchpoint, tp->target)) { printf( "invalid tracepoint %#jx->%#jx for %s:%s:%s:%s\n", (uintmax_t)tp->patchpoint, (uintmax_t)tp->target, tp->probe->prov->name, tp->probe->mod, tp->probe->func, tp->probe->name); continue; } STAILQ_INSERT_TAIL(&tp->probe->tracepoint_list, tp, tracepoint_entry); } } } /* * Called from the kernel linker when a module is loaded, before * dtrace_module_loaded() is called. This is done so that it's possible to * register new providers when modules are loaded. The DTrace framework * explicitly disallows calling into the framework from the provide_module * provider method, so we cannot do this there. */ static void sdt_kld_load(void *arg __unused, struct linker_file *lf) { sdt_kld_load_providers(lf); sdt_kld_load_probes(lf); } static void sdt_kld_unload_try(void *arg __unused, struct linker_file *lf, int *error) { struct sdt_provider *prov, **curr, **begin, **end, *tmp; if (*error != 0) /* We already have an error, so don't do anything. */ return; else if (linker_file_lookup_set(lf, "sdt_providers_set", &begin, &end, NULL)) /* No DTrace providers are declared in this file. */ return; /* * Go through all the providers declared in this linker file and * unregister any that aren't declared in another loaded file. */ for (curr = begin; curr < end; curr++) { TAILQ_FOREACH_SAFE(prov, &sdt_prov_list, prov_entry, tmp) { if (strcmp(prov->name, (*curr)->name) != 0) continue; if (prov->sdt_refs == 1) { if (dtrace_unregister(prov->id) != 0) { *error = 1; return; } TAILQ_REMOVE(&sdt_prov_list, prov, prov_entry); free(prov->name, M_SDT); free(prov, M_SDT); } else prov->sdt_refs--; break; } } } static int sdt_load_providers_cb(linker_file_t lf, void *arg __unused) { sdt_kld_load_providers(lf); return (0); } static int sdt_load_probes_cb(linker_file_t lf, void *arg __unused) { sdt_kld_load_probes(lf); return (0); } +static void +sdt_dtrace_probe(dtrace_id_t id, uintptr_t arg0, uintptr_t arg1, + uintptr_t arg2, uintptr_t arg3, uintptr_t arg4, uintptr_t arg5) +{ + curthread->t_dtrace_sdt_arg[0] = arg5; + dtrace_probe(id, arg0, arg1, arg2, arg3, arg4); +} + static void sdt_load(void) { TAILQ_INIT(&sdt_prov_list); - sdt_probe_func = dtrace_probe; - sdt_probe6_func = (sdt_probe6_func_t)dtrace_probe; + sdt_probe_func = sdt_dtrace_probe; sdt_kld_load_tag = EVENTHANDLER_REGISTER(kld_load, sdt_kld_load, NULL, EVENTHANDLER_PRI_ANY); sdt_kld_unload_try_tag = EVENTHANDLER_REGISTER(kld_unload_try, sdt_kld_unload_try, NULL, EVENTHANDLER_PRI_ANY); /* * Pick up probes from the kernel and already-loaded linker files. * Define providers in a separate pass since a linker file may be using * providers defined in a file that appears later in the list. */ linker_file_foreach(sdt_load_providers_cb, NULL); linker_file_foreach(sdt_load_probes_cb, NULL); } static int sdt_unload(void) { struct sdt_provider *prov, *tmp; int ret; EVENTHANDLER_DEREGISTER(kld_load, sdt_kld_load_tag); EVENTHANDLER_DEREGISTER(kld_unload_try, sdt_kld_unload_try_tag); sdt_probe_func = sdt_probe_stub; - sdt_probe6_func = (sdt_probe6_func_t)sdt_probe_stub; TAILQ_FOREACH_SAFE(prov, &sdt_prov_list, prov_entry, tmp) { ret = dtrace_unregister(prov->id); if (ret != 0) return (ret); TAILQ_REMOVE(&sdt_prov_list, prov, prov_entry); free(prov->name, M_SDT); free(prov, M_SDT); } return (0); } static int sdt_modevent(module_t mod __unused, int type, void *data __unused) { switch (type) { case MOD_LOAD: case MOD_UNLOAD: case MOD_SHUTDOWN: return (0); default: return (EOPNOTSUPP); } } SYSINIT(sdt_load, SI_SUB_DTRACE_PROVIDER, SI_ORDER_ANY, sdt_load, NULL); SYSUNINIT(sdt_unload, SI_SUB_DTRACE_PROVIDER, SI_ORDER_ANY, sdt_unload, NULL); DEV_MODULE(sdt, sdt_modevent, NULL); MODULE_VERSION(sdt, 1); MODULE_DEPEND(sdt, dtrace, 1, 1, 1); +MODULE_DEPEND(sdt, opensolaris, 1, 1, 1); diff --git a/sys/kern/kern_sdt.c b/sys/kern/kern_sdt.c index b7213d2051fc..9704326299e6 100644 --- a/sys/kern/kern_sdt.c +++ b/sys/kern/kern_sdt.c @@ -1,69 +1,69 @@ /*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright 2006-2008 John Birrell * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include #include #include +#include #include SDT_PROVIDER_DEFINE(sdt); /* * Hook for the DTrace probe function. The SDT provider will set this to * dtrace_probe() when it loads. */ sdt_probe_func_t sdt_probe_func = sdt_probe_stub; -sdt_probe6_func_t sdt_probe6_func = (sdt_probe6_func_t)sdt_probe_stub; volatile bool __read_frequently sdt_probes_enabled; /* * This is a stub for probe calls in case kernel DTrace support isn't * enabled. It should never get called because there is no DTrace support * to enable it. */ void sdt_probe_stub(uint32_t id __unused, uintptr_t arg0 __unused, uintptr_t arg1 __unused, uintptr_t arg2 __unused, uintptr_t arg3 __unused, - uintptr_t arg4 __unused) + uintptr_t arg4 __unused, uintptr_t arg5 __unused) { printf("sdt_probe_stub: unexpectedly called\n"); kdb_backtrace(); } void sdt_probe(uint32_t id, uintptr_t arg0, uintptr_t arg1, uintptr_t arg2, uintptr_t arg3, uintptr_t arg4) { - sdt_probe_func(id, arg0, arg1, arg2, arg3, arg4); + sdt_probe_func(id, arg0, arg1, arg2, arg3, arg4, 0); } void sdt_probe6(uint32_t id, uintptr_t arg0, uintptr_t arg1, uintptr_t arg2, uintptr_t arg3, uintptr_t arg4, uintptr_t arg5) { - sdt_probe6_func(id, arg0, arg1, arg2, arg3, arg4, arg5); + sdt_probe_func(id, arg0, arg1, arg2, arg3, arg4, arg5); } diff --git a/sys/sys/sdt.h b/sys/sys/sdt.h index 147d58c53ef4..0987f1cc19c3 100644 --- a/sys/sys/sdt.h +++ b/sys/sys/sdt.h @@ -1,475 +1,472 @@ /*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright 2006-2008 John Birrell * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * Statically Defined Tracing (SDT) definitions. * */ #ifndef _SYS_SDT_H #define _SYS_SDT_H #ifndef _KERNEL #define _DTRACE_VERSION 1 #define DTRACE_PROBE(prov, name) { \ extern void __dtrace_##prov##___##name(void); \ __dtrace_##prov##___##name(); \ } #define DTRACE_PROBE1(prov, name, arg1) { \ extern void __dtrace_##prov##___##name(unsigned long); \ __dtrace_##prov##___##name((unsigned long)arg1); \ } #define DTRACE_PROBE2(prov, name, arg1, arg2) { \ extern void __dtrace_##prov##___##name(unsigned long, \ unsigned long); \ __dtrace_##prov##___##name((unsigned long)arg1, \ (unsigned long)arg2); \ } #define DTRACE_PROBE3(prov, name, arg1, arg2, arg3) { \ extern void __dtrace_##prov##___##name(unsigned long, \ unsigned long, unsigned long); \ __dtrace_##prov##___##name((unsigned long)arg1, \ (unsigned long)arg2, (unsigned long)arg3); \ } #define DTRACE_PROBE4(prov, name, arg1, arg2, arg3, arg4) { \ extern void __dtrace_##prov##___##name(unsigned long, \ unsigned long, unsigned long, unsigned long); \ __dtrace_##prov##___##name((unsigned long)arg1, \ (unsigned long)arg2, (unsigned long)arg3, \ (unsigned long)arg4); \ } #define DTRACE_PROBE5(prov, name, arg1, arg2, arg3, arg4, arg5) { \ extern void __dtrace_##prov##___##name(unsigned long, \ unsigned long, unsigned long, unsigned long, unsigned long);\ __dtrace_##prov##___##name((unsigned long)arg1, \ (unsigned long)arg2, (unsigned long)arg3, \ (unsigned long)arg4, (unsigned long)arg5); \ } #else /* _KERNEL */ #include #include extern volatile bool sdt_probes_enabled; #ifndef KDTRACE_HOOKS #define __sdt_used __unused #define SDT_PROVIDER_DEFINE(prov) #define SDT_PROVIDER_DECLARE(prov) #define SDT_PROBE_DEFINE(prov, mod, func, name) #define SDT_PROBE_DECLARE(prov, mod, func, name) #define SDT_PROBES_ENABLED() 0 #define SDT_PROBE(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4) #define SDT_PROBE_ARGTYPE(prov, mod, func, name, num, type, xtype) #define SDT_PROBE_DEFINE0(prov, mod, func, name) #define SDT_PROBE_DEFINE1(prov, mod, func, name, arg0) #define SDT_PROBE_DEFINE2(prov, mod, func, name, arg0, arg1) #define SDT_PROBE_DEFINE3(prov, mod, func, name, arg0, arg1, arg2) #define SDT_PROBE_DEFINE4(prov, mod, func, name, arg0, arg1, arg2, arg3) #define SDT_PROBE_DEFINE5(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4) #define SDT_PROBE_DEFINE6(prov, mod, func, name, arg0, arg1, arg2, \ arg3, arg4, arg5) #define SDT_PROBE0(prov, mod, func, name) #define SDT_PROBE1(prov, mod, func, name, arg0) #define SDT_PROBE2(prov, mod, func, name, arg0, arg1) #define SDT_PROBE3(prov, mod, func, name, arg0, arg1, arg2) #define SDT_PROBE4(prov, mod, func, name, arg0, arg1, arg2, arg3) #define SDT_PROBE5(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4) #define SDT_PROBE6(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4, arg5) #define MIB_SDT_PROBE1(...) #define MIB_SDT_PROBE2(...) #define SDT_PROBE_DEFINE0_XLATE(prov, mod, func, name) #define SDT_PROBE_DEFINE1_XLATE(prov, mod, func, name, arg0, xarg0) #define SDT_PROBE_DEFINE2_XLATE(prov, mod, func, name, arg0, xarg0, \ arg1, xarg1) #define SDT_PROBE_DEFINE3_XLATE(prov, mod, func, name, arg0, xarg0, \ arg1, xarg1, arg2, xarg2) #define SDT_PROBE_DEFINE4_XLATE(prov, mod, func, name, arg0, xarg0, \ arg1, xarg1, arg2, xarg2, arg3, xarg3) #define SDT_PROBE_DEFINE5_XLATE(prov, mod, func, name, arg0, xarg0, \ arg1, xarg1, arg2, xarg2, arg3, xarg3, arg4, xarg4) #define SDT_PROBE_DEFINE6_XLATE(prov, mod, func, name, arg0, xarg0, \ arg1, xarg1, arg2, xarg2, arg3, xarg3, arg4, xarg4, arg5, xarg5) #define DTRACE_PROBE(name) #define DTRACE_PROBE1(name, type0, arg0) #define DTRACE_PROBE2(name, type0, arg0, type1, arg1) #define DTRACE_PROBE3(name, type0, arg0, type1, arg1, type2, arg2) #define DTRACE_PROBE4(name, type0, arg0, type1, arg1, type2, arg2, type3, arg3) #define DTRACE_PROBE5(name, type0, arg0, type1, arg1, type2, arg2, type3, arg3,\ type4, arg4) #else void sdt_probe(uint32_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t); void sdt_probe6(uint32_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t); #define _SDT_TRACEPOINT_SET sdt_tracepoint_set #define _SDT_TRACEPOINT_SECTION "set_sdt_tracepoint_set" bool sdt_tracepoint_valid(uintptr_t patchpoint, uintptr_t target); void sdt_tracepoint_patch(uintptr_t patchpoint, uintptr_t target); void sdt_tracepoint_restore(uintptr_t patchpoint); #define __sdt_used SET_DECLARE(sdt_providers_set, struct sdt_provider); SET_DECLARE(sdt_probes_set, struct sdt_probe); SET_DECLARE(sdt_argtypes_set, struct sdt_argtype); #define _SDT_PROBE_NAME(prov, mod, func, name) \ sdt_##prov##_##mod##_##func##_##name #define _SDT_PROVIDER_NAME(prov) \ sdt_provider_##prov #define SDT_PROVIDER_DEFINE(_prov) \ struct sdt_provider _SDT_PROVIDER_NAME(_prov)[1] = { \ [0] = { .name = #_prov }, \ }; \ DATA_SET(sdt_providers_set, _SDT_PROVIDER_NAME(_prov)) #define SDT_PROVIDER_DECLARE(prov) \ extern struct sdt_provider _SDT_PROVIDER_NAME(prov)[1] #define SDT_PROBE_DEFINE(_prov, _mod, _func, _name) \ struct sdt_probe _SDT_PROBE_NAME(_prov, _mod, _func, _name)[1] = { \ [0] = { \ .version = sizeof(struct sdt_probe), \ .prov = _SDT_PROVIDER_NAME(_prov), \ .mod = #_mod, \ .func = #_func, \ .name = #_name, \ }, \ }; \ DATA_SET(sdt_probes_set, _SDT_PROBE_NAME(_prov, _mod, _func, _name)) #define SDT_PROBE_DECLARE(prov, mod, func, name) \ extern struct sdt_probe _SDT_PROBE_NAME(prov, mod, func, name)[1] #define SDT_PROBES_ENABLED() __predict_false(sdt_probes_enabled) #ifdef _ILP32 #define _SDT_ASM_WORD ".long" #else #define _SDT_ASM_WORD ".quad" #endif #ifndef _SDT_ASM_PROBE_CONSTRAINT #define _SDT_ASM_PROBE_CONSTRAINT "i" #endif #ifndef _SDT_ASM_PROBE_OPERAND #define _SDT_ASM_PROBE_OPERAND "c" #endif /* * The asm below generates records corresponding to the structure's layout, so * the two must be kept in sync. */ struct sdt_tracepoint { struct sdt_probe *probe; uintptr_t patchpoint; uintptr_t target; STAILQ_ENTRY(sdt_tracepoint) tracepoint_entry; }; #define __SDT_PROBE(prov, mod, func, name, uniq, f, ...) do { \ __WEAK(__CONCAT(__start_set_, _SDT_TRACEPOINT_SET)); \ __WEAK(__CONCAT(__stop_set_, _SDT_TRACEPOINT_SET)); \ asm goto( \ "0:\n" \ _SDT_ASM_PATCH_INSTR "\n" \ ".pushsection " _SDT_TRACEPOINT_SECTION ", \"aw\"\n" \ _SDT_ASM_WORD " %" _SDT_ASM_PROBE_OPERAND "0\n" \ _SDT_ASM_WORD " 0b\n" \ _SDT_ASM_WORD " %l1\n" \ _SDT_ASM_WORD " 0\n" \ ".popsection\n" \ : \ : _SDT_ASM_PROBE_CONSTRAINT (_SDT_PROBE_NAME(prov, mod, \ func, name)) \ : \ : __sdt_probe##uniq); \ if (0) { \ __sdt_probe##uniq:; \ f(_SDT_PROBE_NAME(prov, mod, func, name)->id, __VA_ARGS__); \ } \ } while (0) #define _SDT_PROBE(prov, mod, func, name, uniq, f, ...) \ __SDT_PROBE(prov, mod, func, name, uniq, f, __VA_ARGS__) #define SDT_PROBE(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4) \ _SDT_PROBE(prov, mod, func, name, __COUNTER__, sdt_probe, \ (uintptr_t)arg0, (uintptr_t)arg1, (uintptr_t)arg2, \ (uintptr_t)arg3, (uintptr_t)arg4) #define SDT_PROBE_ARGTYPE(_prov, _mod, _func, _name, _num, _type, _xtype) \ static struct sdt_argtype \ sdta_##_prov##_##_mod##_##_func##_##_name##_num[1] = { \ [0] = { \ .ndx = _num, \ .type = _type, \ .xtype = _xtype, \ .probe = _SDT_PROBE_NAME(_prov, _mod, _func, _name), \ }, \ }; \ DATA_SET(sdt_argtypes_set, \ sdta_##_prov##_##_mod##_##_func##_##_name##_num); #define SDT_PROBE_DEFINE0(prov, mod, func, name) \ SDT_PROBE_DEFINE(prov, mod, func, name) #define SDT_PROBE_DEFINE1(prov, mod, func, name, arg0) \ SDT_PROBE_DEFINE(prov, mod, func, name); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, NULL) #define SDT_PROBE_DEFINE2(prov, mod, func, name, arg0, arg1) \ SDT_PROBE_DEFINE(prov, mod, func, name); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, NULL); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, NULL) #define SDT_PROBE_DEFINE3(prov, mod, func, name, arg0, arg1, arg2)\ SDT_PROBE_DEFINE(prov, mod, func, name); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, NULL); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, NULL); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, NULL) #define SDT_PROBE_DEFINE4(prov, mod, func, name, arg0, arg1, arg2, arg3) \ SDT_PROBE_DEFINE(prov, mod, func, name); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, NULL); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, NULL); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, NULL); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3, NULL) #define SDT_PROBE_DEFINE5(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4) \ SDT_PROBE_DEFINE(prov, mod, func, name); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, NULL); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, NULL); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, NULL); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3, NULL); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 4, arg4, NULL) #define SDT_PROBE_DEFINE6(prov, mod, func, name, arg0, arg1, arg2, arg3,\ arg4, arg5) \ SDT_PROBE_DEFINE(prov, mod, func, name); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, NULL); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, NULL); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, NULL); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3, NULL); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 4, arg4, NULL); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 5, arg5, NULL) #define SDT_PROBE_DEFINE0_XLATE(prov, mod, func, name) \ SDT_PROBE_DEFINE(prov, mod, func, name) #define SDT_PROBE_DEFINE1_XLATE(prov, mod, func, name, arg0, xarg0) \ SDT_PROBE_DEFINE(prov, mod, func, name); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, xarg0) #define SDT_PROBE_DEFINE2_XLATE(prov, mod, func, name, arg0, xarg0, \ arg1, xarg1) \ SDT_PROBE_DEFINE(prov, mod, func, name); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, xarg0); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, xarg1) #define SDT_PROBE_DEFINE3_XLATE(prov, mod, func, name, arg0, xarg0, \ arg1, xarg1, arg2, xarg2) \ SDT_PROBE_DEFINE(prov, mod, func, name); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, xarg0); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, xarg1); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, xarg2) #define SDT_PROBE_DEFINE4_XLATE(prov, mod, func, name, arg0, xarg0, \ arg1, xarg1, arg2, xarg2, arg3, xarg3) \ SDT_PROBE_DEFINE(prov, mod, func, name); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, xarg0); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, xarg1); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, xarg2); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3, xarg3) #define SDT_PROBE_DEFINE5_XLATE(prov, mod, func, name, arg0, xarg0, \ arg1, xarg1, arg2, xarg2, arg3, xarg3, arg4, xarg4) \ SDT_PROBE_DEFINE(prov, mod, func, name); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, xarg0); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, xarg1); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, xarg2); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3, xarg3); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 4, arg4, xarg4) #define SDT_PROBE_DEFINE6_XLATE(prov, mod, func, name, arg0, xarg0, \ arg1, xarg1, arg2, xarg2, arg3, xarg3, arg4, xarg4, arg5, xarg5) \ SDT_PROBE_DEFINE(prov, mod, func, name); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, xarg0); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, xarg1); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, xarg2); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3, xarg3); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 4, arg4, xarg4); \ SDT_PROBE_ARGTYPE(prov, mod, func, name, 5, arg5, xarg5) #define SDT_PROBE0(prov, mod, func, name) \ SDT_PROBE(prov, mod, func, name, 0, 0, 0, 0, 0) #define SDT_PROBE1(prov, mod, func, name, arg0) \ SDT_PROBE(prov, mod, func, name, arg0, 0, 0, 0, 0) #define SDT_PROBE2(prov, mod, func, name, arg0, arg1) \ SDT_PROBE(prov, mod, func, name, arg0, arg1, 0, 0, 0) #define SDT_PROBE3(prov, mod, func, name, arg0, arg1, arg2) \ SDT_PROBE(prov, mod, func, name, arg0, arg1, arg2, 0, 0) #define SDT_PROBE4(prov, mod, func, name, arg0, arg1, arg2, arg3) \ SDT_PROBE(prov, mod, func, name, arg0, arg1, arg2, arg3, 0) #define SDT_PROBE5(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4) \ SDT_PROBE(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4) #define SDT_PROBE6(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4, arg5) \ _SDT_PROBE(prov, mod, func, name, __COUNTER__, sdt_probe6, \ (uintptr_t)arg0, (uintptr_t)arg1, (uintptr_t)arg2, \ (uintptr_t)arg3, (uintptr_t)arg4, (uintptr_t)arg5) #ifndef KDTRACE_NO_MIB_SDT #define MIB_SDT_PROBE1(...) SDT_PROBE1(mib, __VA_ARGS__) #define MIB_SDT_PROBE2(...) SDT_PROBE2(mib, __VA_ARGS__) #else #define MIB_SDT_PROBE1(...) #define MIB_SDT_PROBE2(...) #endif #define DTRACE_PROBE_IMPL_START(name, arg0, arg1, arg2, arg3, arg4) do { \ static SDT_PROBE_DEFINE(sdt, , , name); \ SDT_PROBE(sdt, , , name, arg0, arg1, arg2, arg3, arg4); #define DTRACE_PROBE_IMPL_END } while (0) #define DTRACE_PROBE(name) \ DTRACE_PROBE_IMPL_START(name, 0, 0, 0, 0, 0) \ DTRACE_PROBE_IMPL_END #define DTRACE_PROBE1(name, type0, arg0) \ DTRACE_PROBE_IMPL_START(name, arg0, 0, 0, 0, 0) \ SDT_PROBE_ARGTYPE(sdt, , , name, 0, #type0, NULL); \ DTRACE_PROBE_IMPL_END #define DTRACE_PROBE2(name, type0, arg0, type1, arg1) \ DTRACE_PROBE_IMPL_START(name, arg0, arg1, 0, 0, 0) \ SDT_PROBE_ARGTYPE(sdt, , , name, 0, #type0, NULL); \ SDT_PROBE_ARGTYPE(sdt, , , name, 1, #type1, NULL); \ DTRACE_PROBE_IMPL_END #define DTRACE_PROBE3(name, type0, arg0, type1, arg1, type2, arg2) \ DTRACE_PROBE_IMPL_START(name, arg0, arg1, arg2, 0, 0) \ SDT_PROBE_ARGTYPE(sdt, , , name, 0, #type0, NULL); \ SDT_PROBE_ARGTYPE(sdt, , , name, 1, #type1, NULL); \ SDT_PROBE_ARGTYPE(sdt, , , name, 2, #type2, NULL); \ DTRACE_PROBE_IMPL_END #define DTRACE_PROBE4(name, type0, arg0, type1, arg1, type2, arg2, type3, arg3) \ DTRACE_PROBE_IMPL_START(name, arg0, arg1, arg2, arg3, 0) \ SDT_PROBE_ARGTYPE(sdt, , , name, 0, #type0, NULL); \ SDT_PROBE_ARGTYPE(sdt, , , name, 1, #type1, NULL); \ SDT_PROBE_ARGTYPE(sdt, , , name, 2, #type2, NULL); \ SDT_PROBE_ARGTYPE(sdt, , , name, 3, #type3, NULL); \ DTRACE_PROBE_IMPL_END #define DTRACE_PROBE5(name, type0, arg0, type1, arg1, type2, arg2, type3, arg3, \ type4, arg4) \ DTRACE_PROBE_IMPL_START(name, arg0, arg1, arg2, arg3, arg4) \ SDT_PROBE_ARGTYPE(sdt, , , name, 0, #type0, NULL); \ SDT_PROBE_ARGTYPE(sdt, , , name, 1, #type1, NULL); \ SDT_PROBE_ARGTYPE(sdt, , , name, 2, #type2, NULL); \ SDT_PROBE_ARGTYPE(sdt, , , name, 3, #type3, NULL); \ SDT_PROBE_ARGTYPE(sdt, , , name, 4, #type4, NULL); \ DTRACE_PROBE_IMPL_END #endif /* KDTRACE_HOOKS */ /* * This type definition must match that of dtrace_probe. It is defined this * way to avoid having to rely on CDDL code. */ typedef void (*sdt_probe_func_t)(uint32_t, uintptr_t arg0, uintptr_t arg1, - uintptr_t arg2, uintptr_t arg3, uintptr_t arg4); -typedef void (*sdt_probe6_func_t)(uint32_t, uintptr_t arg0, uintptr_t arg1, uintptr_t arg2, uintptr_t arg3, uintptr_t arg4, uintptr_t arg5); /* * The 'sdt' provider will set it to dtrace_probe when it loads. */ extern sdt_probe_func_t sdt_probe_func; -extern sdt_probe6_func_t sdt_probe6_func; struct sdt_probe; struct sdt_provider; struct linker_file; struct sdt_argtype { int ndx; /* Argument index. */ const char *type; /* Argument type string. */ const char *xtype; /* Translated argument type. */ TAILQ_ENTRY(sdt_argtype) argtype_entry; /* Argument type list entry. */ struct sdt_probe *probe; /* Ptr to the probe structure. */ }; struct sdt_probe { int version; /* Set to sizeof(struct sdt_probe). */ struct sdt_provider *prov; /* Ptr to the provider structure. */ TAILQ_ENTRY(sdt_probe) probe_entry; /* SDT probe list entry. */ TAILQ_HEAD(, sdt_argtype) argtype_list; STAILQ_HEAD(, sdt_tracepoint) tracepoint_list; const char *mod; const char *func; const char *name; id_t id; /* DTrace probe ID. */ int n_args; /* Number of arguments. */ struct linker_file *sdtp_lf; /* Module in which we're defined. */ }; struct sdt_provider { char *name; /* Provider name. */ TAILQ_ENTRY(sdt_provider) prov_entry; /* SDT provider list entry. */ uintptr_t id; /* DTrace provider ID. */ int sdt_refs; /* Number of module references. */ }; void sdt_probe_stub(uint32_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, - uintptr_t); + uintptr_t, uintptr_t); SDT_PROVIDER_DECLARE(sdt); #endif /* _KERNEL */ #endif /* _SYS_SDT_H */