266 lines
10 KiB
C
266 lines
10 KiB
C
/*-
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* Copyright 2006-2008 John Birrell <jb@FreeBSD.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*
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* Statically Defined Tracing (SDT) definitions.
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*
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*/
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#ifndef _SYS_SDT_H
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#define _SYS_SDT_H
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#ifndef _KERNEL
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#define _DTRACE_VERSION 1
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#define DTRACE_PROBE(prov, name) { \
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extern void __dtrace_##prov##___##name(void); \
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__dtrace_##prov##___##name(); \
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}
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#define DTRACE_PROBE1(prov, name, arg1) { \
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extern void __dtrace_##prov##___##name(unsigned long); \
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__dtrace_##prov##___##name((unsigned long)arg1); \
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}
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#define DTRACE_PROBE2(prov, name, arg1, arg2) { \
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extern void __dtrace_##prov##___##name(unsigned long, \
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unsigned long); \
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__dtrace_##prov##___##name((unsigned long)arg1, \
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(unsigned long)arg2); \
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}
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#define DTRACE_PROBE3(prov, name, arg1, arg2, arg3) { \
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extern void __dtrace_##prov##___##name(unsigned long, \
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unsigned long, unsigned long); \
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__dtrace_##prov##___##name((unsigned long)arg1, \
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(unsigned long)arg2, (unsigned long)arg3); \
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}
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#define DTRACE_PROBE4(prov, name, arg1, arg2, arg3, arg4) { \
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extern void __dtrace_##prov##___##name(unsigned long, \
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unsigned long, unsigned long, unsigned long); \
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__dtrace_##prov##___##name((unsigned long)arg1, \
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(unsigned long)arg2, (unsigned long)arg3, \
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(unsigned long)arg4); \
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}
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#define DTRACE_PROBE5(prov, name, arg1, arg2, arg3, arg4, arg5) { \
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extern void __dtrace_##prov##___##name(unsigned long, \
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unsigned long, unsigned long, unsigned long, unsigned long);\
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__dtrace_##prov##___##name((unsigned long)arg1, \
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(unsigned long)arg2, (unsigned long)arg3, \
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(unsigned long)arg4, (unsigned long)arg5); \
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}
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#else /* _KERNEL */
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#ifndef KDTRACE_HOOKS
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#define SDT_PROVIDER_DEFINE(prov)
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#define SDT_PROVIDER_DECLARE(prov)
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#define SDT_PROBE_DEFINE(prov, mod, func, name, sname)
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#define SDT_PROBE_DECLARE(prov, mod, func, name)
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#define SDT_PROBE(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4)
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#define SDT_PROBE_ARGTYPE(prov, mod, func, name, num, type)
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#define SDT_PROBE_DEFINE1(prov, mod, func, name, sname, arg0)
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#define SDT_PROBE_DEFINE2(prov, mod, func, name, sname, arg0, arg1)
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#define SDT_PROBE_DEFINE3(prov, mod, func, name, sname, arg0, arg1, arg2)
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#define SDT_PROBE_DEFINE4(prov, mod, func, name, sname, arg0, arg1, arg2, arg3)
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#define SDT_PROBE_DEFINE5(prov, mod, func, name, sname, arg0, arg1, arg2, arg3, arg4)
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#define SDT_PROBE1(prov, mod, func, name, arg0)
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#define SDT_PROBE2(prov, mod, func, name, arg0, arg1)
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#define SDT_PROBE3(prov, mod, func, name, arg0, arg1, arg2)
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#define SDT_PROBE4(prov, mod, func, name, arg0, arg1, arg2, arg3)
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#define SDT_PROBE5(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4)
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#else
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/*
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* This type definition must match that of dtrace_probe. It is defined this
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* way to avoid having to rely on CDDL code.
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*/
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typedef void (*sdt_probe_func_t)(u_int32_t, uintptr_t arg0, uintptr_t arg1,
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uintptr_t arg2, uintptr_t arg3, uintptr_t arg4);
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/*
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* The hook for the probe function. See kern_sdt.c which defaults this to
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* it's own stub. The 'sdt' provider will set it to dtrace_probe when it
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* loads.
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*/
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extern sdt_probe_func_t sdt_probe_func;
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typedef enum {
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SDT_UNINIT = 1,
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SDT_INIT,
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} sdt_state_t;
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struct sdt_probe;
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struct sdt_provider;
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struct sdt_argtype {
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int ndx; /* Argument index. */
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const char *type; /* Argument type string. */
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TAILQ_ENTRY(sdt_argtype)
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argtype_entry; /* Argument type list entry. */
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struct sdt_probe
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*probe; /* Ptr to the probe structure. */
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};
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struct sdt_probe {
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int version; /* Set to sizeof(struct sdt_ref). */
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sdt_state_t state;
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struct sdt_provider
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*prov; /* Ptr to the provider structure. */
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TAILQ_ENTRY(sdt_probe)
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probe_entry; /* SDT probe list entry. */
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TAILQ_HEAD(argtype_list_head, sdt_argtype) argtype_list;
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const char *mod;
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const char *func;
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const char *name;
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id_t id; /* DTrace probe ID. */
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int n_args; /* Number of arguments. */
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};
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struct sdt_provider {
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const char *name; /* Provider name. */
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TAILQ_ENTRY(sdt_provider)
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prov_entry; /* SDT provider list entry. */
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TAILQ_HEAD(probe_list_head, sdt_probe) probe_list;
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uintptr_t id; /* DTrace provider ID. */
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};
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#define SDT_PROVIDER_DEFINE(prov) \
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struct sdt_provider sdt_provider_##prov[1] = { \
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{ #prov, { NULL, NULL }, { NULL, NULL } } \
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}; \
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SYSINIT(sdt_provider_##prov##_init, SI_SUB_KDTRACE, \
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SI_ORDER_SECOND, sdt_provider_register, \
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sdt_provider_##prov ); \
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SYSUNINIT(sdt_provider_##prov##_uninit, SI_SUB_KDTRACE, \
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SI_ORDER_SECOND, sdt_provider_deregister, \
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sdt_provider_##prov )
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#define SDT_PROVIDER_DECLARE(prov) \
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extern struct sdt_provider sdt_provider_##prov[1]
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#define SDT_PROBE_DEFINE(prov, mod, func, name, sname) \
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struct sdt_probe sdt_##prov##_##mod##_##func##_##name[1] = { \
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{ sizeof(struct sdt_probe), 0, sdt_provider_##prov, \
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{ NULL, NULL }, { NULL, NULL }, #mod, #func, #sname, 0, 0 } \
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}; \
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SYSINIT(sdt_##prov##_##mod##_##func##_##name##_init, SI_SUB_KDTRACE, \
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SI_ORDER_SECOND + 1, sdt_probe_register, \
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sdt_##prov##_##mod##_##func##_##name ); \
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SYSUNINIT(sdt_##prov##_##mod##_##func##_##name##_uninit, \
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SI_SUB_KDTRACE, SI_ORDER_SECOND + 1, sdt_probe_deregister, \
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sdt_##prov##_##mod##_##func##_##name )
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#define SDT_PROBE_DECLARE(prov, mod, func, name) \
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extern struct sdt_probe sdt_##prov##_##mod##_##func##_##name[1]
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#define SDT_PROBE(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4) \
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if (sdt_##prov##_##mod##_##func##_##name->id) \
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(*sdt_probe_func)(sdt_##prov##_##mod##_##func##_##name->id, \
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(uintptr_t) arg0, (uintptr_t) arg1, (uintptr_t) arg2, \
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(uintptr_t) arg3, (uintptr_t) arg4)
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#define SDT_PROBE_ARGTYPE(prov, mod, func, name, num, type) \
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static struct sdt_argtype sdt_##prov##_##mod##_##func##_##name##num[1] \
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= { { num, type, { NULL, NULL }, \
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sdt_##prov##_##mod##_##func##_##name } \
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}; \
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SYSINIT(sdt_##prov##_##mod##_##func##_##name##num##_init, \
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SI_SUB_KDTRACE, SI_ORDER_SECOND + 2, sdt_argtype_register, \
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sdt_##prov##_##mod##_##func##_##name##num ); \
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SYSUNINIT(sdt_##prov##_##mod##_##func##_##name##num##_uninit, \
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SI_SUB_KDTRACE, SI_ORDER_SECOND + 2, sdt_argtype_deregister, \
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sdt_##prov##_##mod##_##func##_##name##num )
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#define SDT_PROBE_DEFINE1(prov, mod, func, name, sname, arg0) \
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SDT_PROBE_DEFINE(prov, mod, func, name, sname); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0)
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#define SDT_PROBE_DEFINE2(prov, mod, func, name, sname, arg0, arg1) \
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SDT_PROBE_DEFINE(prov, mod, func, name, sname); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1)
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#define SDT_PROBE_DEFINE3(prov, mod, func, name, sname, arg0, arg1, arg2)\
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SDT_PROBE_DEFINE(prov, mod, func, name, sname); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2)
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#define SDT_PROBE_DEFINE4(prov, mod, func, name, sname, arg0, arg1, arg2, arg3) \
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SDT_PROBE_DEFINE(prov, mod, func, name, sname); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3)
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#define SDT_PROBE_DEFINE5(prov, mod, func, name, sname, arg0, arg1, arg2, arg3, arg4) \
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SDT_PROBE_DEFINE(prov, mod, func, name, sname); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3); \
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SDT_PROBE_ARGTYPE(prov, mod, func, name, 4, arg4)
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#define SDT_PROBE1(prov, mod, func, name, arg0) \
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SDT_PROBE(prov, mod, func, name, arg0, 0, 0, 0, 0)
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#define SDT_PROBE2(prov, mod, func, name, arg0, arg1) \
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SDT_PROBE(prov, mod, func, name, arg0, arg1, 0, 0, 0)
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#define SDT_PROBE3(prov, mod, func, name, arg0, arg1, arg2) \
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SDT_PROBE(prov, mod, func, name, arg0, arg1, arg2, 0, 0)
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#define SDT_PROBE4(prov, mod, func, name, arg0, arg1, arg2, arg3) \
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SDT_PROBE(prov, mod, func, name, arg0, arg1, arg2, arg3, 0)
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#define SDT_PROBE5(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4) \
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SDT_PROBE(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4)
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typedef int (*sdt_argtype_listall_func_t)(struct sdt_argtype *, void *);
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typedef int (*sdt_probe_listall_func_t)(struct sdt_probe *, void *);
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typedef int (*sdt_provider_listall_func_t)(struct sdt_provider *, void *);
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void sdt_argtype_deregister(void *);
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void sdt_argtype_register(void *);
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void sdt_probe_deregister(void *);
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void sdt_probe_register(void *);
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void sdt_provider_deregister(void *);
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void sdt_provider_register(void *);
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void sdt_probe_stub(u_int32_t, uintptr_t arg0, uintptr_t arg1, uintptr_t arg2,
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uintptr_t arg3, uintptr_t arg4);
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int sdt_argtype_listall(struct sdt_probe *, sdt_argtype_listall_func_t, void *);
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int sdt_probe_listall(struct sdt_provider *, sdt_probe_listall_func_t, void *);
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int sdt_provider_listall(sdt_provider_listall_func_t,void *);
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#endif /* KDTRACE_HOOKS */
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#endif /* _KERNEL */
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#endif /* _SYS_SDT_H */
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