The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/sys/sdt.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright 2006-2008 John Birrell <jb@FreeBSD.org>
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  * 
   15  * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   18  * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
   19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   25  * SUCH DAMAGE.
   26  *
   27  * $FreeBSD$
   28  *
   29  * Statically Defined Tracing (SDT) definitions.
   30  *
   31  */
   32 
   33 #ifndef _SYS_SDT_H
   34 #define _SYS_SDT_H
   35 
   36 #ifndef _KERNEL
   37 
   38 #define _DTRACE_VERSION 1
   39 
   40 #define DTRACE_PROBE(prov, name) {                              \
   41         extern void __dtrace_##prov##___##name(void);           \
   42         __dtrace_##prov##___##name();                           \
   43 }
   44 
   45 #define DTRACE_PROBE1(prov, name, arg1) {                       \
   46         extern void __dtrace_##prov##___##name(unsigned long);  \
   47         __dtrace_##prov##___##name((unsigned long)arg1);        \
   48 }
   49 
   50 #define DTRACE_PROBE2(prov, name, arg1, arg2) {                 \
   51         extern void __dtrace_##prov##___##name(unsigned long,   \
   52             unsigned long);                                     \
   53         __dtrace_##prov##___##name((unsigned long)arg1,         \
   54             (unsigned long)arg2);                               \
   55 }
   56 
   57 #define DTRACE_PROBE3(prov, name, arg1, arg2, arg3) {           \
   58         extern void __dtrace_##prov##___##name(unsigned long,   \
   59             unsigned long, unsigned long);                      \
   60         __dtrace_##prov##___##name((unsigned long)arg1,         \
   61             (unsigned long)arg2, (unsigned long)arg3);          \
   62 }
   63 
   64 #define DTRACE_PROBE4(prov, name, arg1, arg2, arg3, arg4) {     \
   65         extern void __dtrace_##prov##___##name(unsigned long,   \
   66             unsigned long, unsigned long, unsigned long);       \
   67         __dtrace_##prov##___##name((unsigned long)arg1,         \
   68             (unsigned long)arg2, (unsigned long)arg3,           \
   69             (unsigned long)arg4);                               \
   70 }
   71 
   72 #define DTRACE_PROBE5(prov, name, arg1, arg2, arg3, arg4, arg5) {       \
   73         extern void __dtrace_##prov##___##name(unsigned long,           \
   74             unsigned long, unsigned long, unsigned long, unsigned long);\
   75         __dtrace_##prov##___##name((unsigned long)arg1,                 \
   76             (unsigned long)arg2, (unsigned long)arg3,                   \
   77             (unsigned long)arg4, (unsigned long)arg5);                  \
   78 }
   79 
   80 #else /* _KERNEL */
   81 
   82 #include <sys/cdefs.h>
   83 #include <sys/linker_set.h>
   84 
   85 extern volatile bool sdt_probes_enabled;
   86 
   87 #ifndef KDTRACE_HOOKS
   88 
   89 #define SDT_PROVIDER_DEFINE(prov)
   90 #define SDT_PROVIDER_DECLARE(prov)
   91 #define SDT_PROBE_DEFINE(prov, mod, func, name)
   92 #define SDT_PROBE_DECLARE(prov, mod, func, name)
   93 #define SDT_PROBE(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4)
   94 #define SDT_PROBE_ARGTYPE(prov, mod, func, name, num, type, xtype)
   95 
   96 #define SDT_PROBE_DEFINE0(prov, mod, func, name)
   97 #define SDT_PROBE_DEFINE1(prov, mod, func, name, arg0)
   98 #define SDT_PROBE_DEFINE2(prov, mod, func, name, arg0, arg1)
   99 #define SDT_PROBE_DEFINE3(prov, mod, func, name, arg0, arg1, arg2)
  100 #define SDT_PROBE_DEFINE4(prov, mod, func, name, arg0, arg1, arg2, arg3)
  101 #define SDT_PROBE_DEFINE5(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4)
  102 #define SDT_PROBE_DEFINE6(prov, mod, func, name, arg0, arg1, arg2,      \
  103     arg3, arg4, arg5)
  104 #define SDT_PROBE_DEFINE7(prov, mod, func, name, arg0, arg1, arg2,      \
  105     arg3, arg4, arg5, arg6)
  106 
  107 #define SDT_PROBE0(prov, mod, func, name)
  108 #define SDT_PROBE1(prov, mod, func, name, arg0)
  109 #define SDT_PROBE2(prov, mod, func, name, arg0, arg1)
  110 #define SDT_PROBE3(prov, mod, func, name, arg0, arg1, arg2)
  111 #define SDT_PROBE4(prov, mod, func, name, arg0, arg1, arg2, arg3)
  112 #define SDT_PROBE5(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4)
  113 #define SDT_PROBE6(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4, arg5)
  114 #define SDT_PROBE7(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4, arg5,  \
  115     arg6)
  116 
  117 #define SDT_PROBE_DEFINE0_XLATE(prov, mod, func, name)
  118 #define SDT_PROBE_DEFINE1_XLATE(prov, mod, func, name, arg0, xarg0)
  119 #define SDT_PROBE_DEFINE2_XLATE(prov, mod, func, name, arg0, xarg0,     \
  120     arg1, xarg1)
  121 #define SDT_PROBE_DEFINE3_XLATE(prov, mod, func, name, arg0, xarg0,     \
  122     arg1, xarg1, arg2, xarg2)
  123 #define SDT_PROBE_DEFINE4_XLATE(prov, mod, func, name, arg0, xarg0,     \
  124     arg1, xarg1, arg2, xarg2, arg3, xarg3)
  125 #define SDT_PROBE_DEFINE5_XLATE(prov, mod, func, name, arg0, xarg0,     \
  126     arg1, xarg1, arg2, xarg2, arg3, xarg3, arg4, xarg4)
  127 #define SDT_PROBE_DEFINE6_XLATE(prov, mod, func, name, arg0, xarg0,     \
  128     arg1,  xarg1, arg2, xarg2, arg3, xarg3, arg4, xarg4, arg5, xarg5)
  129 #define SDT_PROBE_DEFINE7_XLATE(prov, mod, func, name, arg0, xarg0,     \
  130     arg1, xarg1, arg2, xarg2, arg3, xarg3, arg4, xarg4, arg5, xarg5, arg6,     \
  131     xarg6)
  132 
  133 #define DTRACE_PROBE(name)
  134 #define DTRACE_PROBE1(name, type0, arg0)
  135 #define DTRACE_PROBE2(name, type0, arg0, type1, arg1)
  136 #define DTRACE_PROBE3(name, type0, arg0, type1, arg1, type2, arg2)
  137 #define DTRACE_PROBE4(name, type0, arg0, type1, arg1, type2, arg2, type3, arg3)
  138 #define DTRACE_PROBE5(name, type0, arg0, type1, arg1, type2, arg2, type3, arg3,\
  139     type4, arg4)
  140 
  141 #else
  142 
  143 SET_DECLARE(sdt_providers_set, struct sdt_provider);
  144 SET_DECLARE(sdt_probes_set, struct sdt_probe);
  145 SET_DECLARE(sdt_argtypes_set, struct sdt_argtype);
  146 
  147 #define SDT_PROVIDER_DEFINE(prov)                                               \
  148         struct sdt_provider sdt_provider_##prov[1] = {                          \
  149                 { #prov, { NULL, NULL }, 0, 0 }                                 \
  150         };                                                                      \
  151         DATA_SET(sdt_providers_set, sdt_provider_##prov);
  152 
  153 #define SDT_PROVIDER_DECLARE(prov)                                              \
  154         extern struct sdt_provider sdt_provider_##prov[1]
  155 
  156 #define SDT_PROBE_DEFINE(prov, mod, func, name)                                 \
  157         struct sdt_probe sdt_##prov##_##mod##_##func##_##name[1] = {            \
  158                 { sizeof(struct sdt_probe), sdt_provider_##prov,                \
  159                     { NULL, NULL }, { NULL, NULL }, #mod, #func, #name, 0, 0,   \
  160                     NULL }                                                      \
  161         };                                                                      \
  162         DATA_SET(sdt_probes_set, sdt_##prov##_##mod##_##func##_##name);
  163 
  164 #define SDT_PROBE_DECLARE(prov, mod, func, name)                                \
  165         extern struct sdt_probe sdt_##prov##_##mod##_##func##_##name[1]
  166 
  167 #define SDT_PROBE(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4)  do {    \
  168         if (__predict_false(sdt_probes_enabled)) {                              \
  169                 if (__predict_false(sdt_##prov##_##mod##_##func##_##name->id))  \
  170                 (*sdt_probe_func)(sdt_##prov##_##mod##_##func##_##name->id,     \
  171                     (uintptr_t) arg0, (uintptr_t) arg1, (uintptr_t) arg2,       \
  172                     (uintptr_t) arg3, (uintptr_t) arg4);                        \
  173         } \
  174 } while (0)
  175 
  176 #define SDT_PROBE_ARGTYPE(prov, mod, func, name, num, type, xtype)              \
  177         static struct sdt_argtype sdta_##prov##_##mod##_##func##_##name##num[1] \
  178             = { { num, type, xtype, { NULL, NULL },                             \
  179             sdt_##prov##_##mod##_##func##_##name }                              \
  180         };                                                                      \
  181         DATA_SET(sdt_argtypes_set, sdta_##prov##_##mod##_##func##_##name##num);
  182 
  183 #define SDT_PROBE_DEFINE0(prov, mod, func, name)                        \
  184         SDT_PROBE_DEFINE(prov, mod, func, name)
  185 
  186 #define SDT_PROBE_DEFINE1(prov, mod, func, name, arg0)                  \
  187         SDT_PROBE_DEFINE(prov, mod, func, name);                        \
  188         SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, NULL)
  189 
  190 #define SDT_PROBE_DEFINE2(prov, mod, func, name, arg0, arg1)            \
  191         SDT_PROBE_DEFINE(prov, mod, func, name);                        \
  192         SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, NULL);        \
  193         SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, NULL)
  194 
  195 #define SDT_PROBE_DEFINE3(prov, mod, func, name, arg0, arg1, arg2)\
  196         SDT_PROBE_DEFINE(prov, mod, func, name);                        \
  197         SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, NULL);        \
  198         SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, NULL);        \
  199         SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, NULL)
  200 
  201 #define SDT_PROBE_DEFINE4(prov, mod, func, name, arg0, arg1, arg2, arg3) \
  202         SDT_PROBE_DEFINE(prov, mod, func, name);                        \
  203         SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, NULL);        \
  204         SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, NULL);        \
  205         SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, NULL);        \
  206         SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3, NULL)
  207 
  208 #define SDT_PROBE_DEFINE5(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4) \
  209         SDT_PROBE_DEFINE(prov, mod, func, name);                        \
  210         SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, NULL);        \
  211         SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, NULL);        \
  212         SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, NULL);        \
  213         SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3, NULL);        \
  214         SDT_PROBE_ARGTYPE(prov, mod, func, name, 4, arg4, NULL)
  215 
  216 #define SDT_PROBE_DEFINE6(prov, mod, func, name, arg0, arg1, arg2, arg3,\
  217     arg4, arg5) \
  218         SDT_PROBE_DEFINE(prov, mod, func, name);                        \
  219         SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, NULL);        \
  220         SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, NULL);        \
  221         SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, NULL);        \
  222         SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3, NULL);        \
  223         SDT_PROBE_ARGTYPE(prov, mod, func, name, 4, arg4, NULL);        \
  224         SDT_PROBE_ARGTYPE(prov, mod, func, name, 5, arg5, NULL)
  225 
  226 #define SDT_PROBE_DEFINE7(prov, mod, func, name, arg0, arg1, arg2, arg3,\
  227     arg4, arg5, arg6) \
  228         SDT_PROBE_DEFINE(prov, mod, func, name);                        \
  229         SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, NULL);        \
  230         SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, NULL);        \
  231         SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, NULL);        \
  232         SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3, NULL);        \
  233         SDT_PROBE_ARGTYPE(prov, mod, func, name, 4, arg4, NULL);        \
  234         SDT_PROBE_ARGTYPE(prov, mod, func, name, 5, arg5, NULL);        \
  235         SDT_PROBE_ARGTYPE(prov, mod, func, name, 6, arg6, NULL)
  236 
  237 #define SDT_PROBE_DEFINE0_XLATE(prov, mod, func, name)          \
  238         SDT_PROBE_DEFINE(prov, mod, func, name)
  239 
  240 #define SDT_PROBE_DEFINE1_XLATE(prov, mod, func, name, arg0, xarg0) \
  241         SDT_PROBE_DEFINE(prov, mod, func, name);                        \
  242         SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, xarg0)
  243 
  244 #define SDT_PROBE_DEFINE2_XLATE(prov, mod, func, name, arg0, xarg0, \
  245     arg1,  xarg1)                                                       \
  246         SDT_PROBE_DEFINE(prov, mod, func, name);                        \
  247         SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, xarg0);       \
  248         SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, xarg1)
  249 
  250 #define SDT_PROBE_DEFINE3_XLATE(prov, mod, func, name, arg0, xarg0, \
  251     arg1, xarg1, arg2, xarg2)                                           \
  252         SDT_PROBE_DEFINE(prov, mod, func, name);                        \
  253         SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, xarg0);       \
  254         SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, xarg1);       \
  255         SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, xarg2)
  256 
  257 #define SDT_PROBE_DEFINE4_XLATE(prov, mod, func, name, arg0, xarg0, \
  258     arg1, xarg1, arg2, xarg2, arg3, xarg3)                              \
  259         SDT_PROBE_DEFINE(prov, mod, func, name);                        \
  260         SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, xarg0);       \
  261         SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, xarg1);       \
  262         SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, xarg2);       \
  263         SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3, xarg3)
  264 
  265 #define SDT_PROBE_DEFINE5_XLATE(prov, mod, func, name, arg0, xarg0, \
  266     arg1, xarg1, arg2, xarg2, arg3, xarg3, arg4, xarg4)                 \
  267         SDT_PROBE_DEFINE(prov, mod, func, name);                        \
  268         SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, xarg0);       \
  269         SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, xarg1);       \
  270         SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, xarg2);       \
  271         SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3, xarg3);       \
  272         SDT_PROBE_ARGTYPE(prov, mod, func, name, 4, arg4, xarg4)
  273 
  274 #define SDT_PROBE_DEFINE6_XLATE(prov, mod, func, name, arg0, xarg0, \
  275     arg1, xarg1, arg2, xarg2, arg3, xarg3, arg4, xarg4, arg5, xarg5)    \
  276         SDT_PROBE_DEFINE(prov, mod, func, name);                        \
  277         SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, xarg0);       \
  278         SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, xarg1);       \
  279         SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, xarg2);       \
  280         SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3, xarg3);       \
  281         SDT_PROBE_ARGTYPE(prov, mod, func, name, 4, arg4, xarg4);       \
  282         SDT_PROBE_ARGTYPE(prov, mod, func, name, 5, arg5, xarg5)
  283 
  284 #define SDT_PROBE_DEFINE7_XLATE(prov, mod, func, name, arg0, xarg0, \
  285     arg1, xarg1, arg2, xarg2, arg3, xarg3, arg4, xarg4, arg5, xarg5, arg6, \
  286     xarg6)                                                              \
  287         SDT_PROBE_DEFINE(prov, mod, func, name);                        \
  288         SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, xarg0);       \
  289         SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, xarg1);       \
  290         SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, xarg2);       \
  291         SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3, xarg3);       \
  292         SDT_PROBE_ARGTYPE(prov, mod, func, name, 4, arg4, xarg4);       \
  293         SDT_PROBE_ARGTYPE(prov, mod, func, name, 5, arg5, xarg5);       \
  294         SDT_PROBE_ARGTYPE(prov, mod, func, name, 6, arg6, xarg6)
  295 
  296 #define SDT_PROBE0(prov, mod, func, name)                               \
  297         SDT_PROBE(prov, mod, func, name, 0, 0, 0, 0, 0)
  298 #define SDT_PROBE1(prov, mod, func, name, arg0)                         \
  299         SDT_PROBE(prov, mod, func, name, arg0, 0, 0, 0, 0)
  300 #define SDT_PROBE2(prov, mod, func, name, arg0, arg1)                   \
  301         SDT_PROBE(prov, mod, func, name, arg0, arg1, 0, 0, 0)
  302 #define SDT_PROBE3(prov, mod, func, name, arg0, arg1, arg2)             \
  303         SDT_PROBE(prov, mod, func, name, arg0, arg1, arg2,  0, 0)
  304 #define SDT_PROBE4(prov, mod, func, name, arg0, arg1, arg2, arg3)       \
  305         SDT_PROBE(prov, mod, func, name, arg0, arg1, arg2, arg3, 0)
  306 #define SDT_PROBE5(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4) \
  307         SDT_PROBE(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4)
  308 #define SDT_PROBE6(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4, arg5)  \
  309         do {                                                                   \
  310                 if (sdt_##prov##_##mod##_##func##_##name->id)                  \
  311                         (*(void (*)(uint32_t, uintptr_t, uintptr_t, uintptr_t, \
  312                             uintptr_t, uintptr_t, uintptr_t))sdt_probe_func)(  \
  313                             sdt_##prov##_##mod##_##func##_##name->id,          \
  314                             (uintptr_t)arg0, (uintptr_t)arg1, (uintptr_t)arg2, \
  315                             (uintptr_t)arg3, (uintptr_t)arg4, (uintptr_t)arg5);\
  316         } while (0)
  317 #define SDT_PROBE7(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4, arg5,  \
  318     arg6)                                                                      \
  319         do {                                                                   \
  320                 if (sdt_##prov##_##mod##_##func##_##name->id)                  \
  321                         (*(void (*)(uint32_t, uintptr_t, uintptr_t, uintptr_t, \
  322                             uintptr_t, uintptr_t, uintptr_t, uintptr_t))       \
  323                             sdt_probe_func)(                                   \
  324                             sdt_##prov##_##mod##_##func##_##name->id,          \
  325                             (uintptr_t)arg0, (uintptr_t)arg1, (uintptr_t)arg2, \
  326                             (uintptr_t)arg3, (uintptr_t)arg4, (uintptr_t)arg5, \
  327                             (uintptr_t)arg6);                                  \
  328         } while (0)
  329 
  330 #define DTRACE_PROBE_IMPL_START(name, arg0, arg1, arg2, arg3, arg4)     do { \
  331         static SDT_PROBE_DEFINE(sdt, , , name);                              \
  332         SDT_PROBE(sdt, , , name, arg0, arg1, arg2, arg3, arg4);
  333 #define DTRACE_PROBE_IMPL_END   } while (0)
  334 
  335 #define DTRACE_PROBE(name)                                              \
  336         DTRACE_PROBE_IMPL_START(name, 0, 0, 0, 0, 0)                    \
  337         DTRACE_PROBE_IMPL_END
  338 
  339 #define DTRACE_PROBE1(name, type0, arg0)                                \
  340         DTRACE_PROBE_IMPL_START(name, arg0, 0, 0, 0, 0)                 \
  341         SDT_PROBE_ARGTYPE(sdt, , , name, 0, #type0, NULL);              \
  342         DTRACE_PROBE_IMPL_END
  343 
  344 #define DTRACE_PROBE2(name, type0, arg0, type1, arg1)                   \
  345         DTRACE_PROBE_IMPL_START(name, arg0, arg1, 0, 0, 0)              \
  346         SDT_PROBE_ARGTYPE(sdt, , , name, 0, #type0, NULL);              \
  347         SDT_PROBE_ARGTYPE(sdt, , , name, 1, #type1, NULL);              \
  348         DTRACE_PROBE_IMPL_END
  349 
  350 #define DTRACE_PROBE3(name, type0, arg0, type1, arg1, type2, arg2)      \
  351         DTRACE_PROBE_IMPL_START(name, arg0, arg1, arg2, 0, 0)           \
  352         SDT_PROBE_ARGTYPE(sdt, , , name, 0, #type0, NULL);              \
  353         SDT_PROBE_ARGTYPE(sdt, , , name, 1, #type1, NULL);              \
  354         SDT_PROBE_ARGTYPE(sdt, , , name, 2, #type2, NULL);              \
  355         DTRACE_PROBE_IMPL_END
  356 
  357 #define DTRACE_PROBE4(name, type0, arg0, type1, arg1, type2, arg2, type3, arg3) \
  358         DTRACE_PROBE_IMPL_START(name, arg0, arg1, arg2, arg3, 0)        \
  359         SDT_PROBE_ARGTYPE(sdt, , , name, 0, #type0, NULL);              \
  360         SDT_PROBE_ARGTYPE(sdt, , , name, 1, #type1, NULL);              \
  361         SDT_PROBE_ARGTYPE(sdt, , , name, 2, #type2, NULL);              \
  362         SDT_PROBE_ARGTYPE(sdt, , , name, 3, #type3, NULL);              \
  363         DTRACE_PROBE_IMPL_END
  364 
  365 #define DTRACE_PROBE5(name, type0, arg0, type1, arg1, type2, arg2, type3, arg3, \
  366     type4, arg4)                                                                \
  367         DTRACE_PROBE_IMPL_START(name, arg0, arg1, arg2, arg3, arg4)     \
  368         SDT_PROBE_ARGTYPE(sdt, , , name, 0, #type0, NULL);              \
  369         SDT_PROBE_ARGTYPE(sdt, , , name, 1, #type1, NULL);              \
  370         SDT_PROBE_ARGTYPE(sdt, , , name, 2, #type2, NULL);              \
  371         SDT_PROBE_ARGTYPE(sdt, , , name, 3, #type3, NULL);              \
  372         SDT_PROBE_ARGTYPE(sdt, , , name, 4, #type4, NULL);              \
  373         DTRACE_PROBE_IMPL_END
  374 
  375 #endif /* KDTRACE_HOOKS */
  376 
  377 /*
  378  * This type definition must match that of dtrace_probe. It is defined this
  379  * way to avoid having to rely on CDDL code.
  380  */
  381 typedef void (*sdt_probe_func_t)(uint32_t, uintptr_t arg0, uintptr_t arg1,
  382     uintptr_t arg2, uintptr_t arg3, uintptr_t arg4);
  383 
  384 /*
  385  * The 'sdt' provider will set it to dtrace_probe when it loads.
  386  */
  387 extern sdt_probe_func_t sdt_probe_func;
  388 
  389 struct sdt_probe;
  390 struct sdt_provider;
  391 struct linker_file;
  392 
  393 struct sdt_argtype {
  394         int             ndx;            /* Argument index. */
  395         const char      *type;          /* Argument type string. */
  396         const char      *xtype;         /* Translated argument type. */
  397         TAILQ_ENTRY(sdt_argtype)
  398                         argtype_entry;  /* Argument type list entry. */
  399         struct sdt_probe *probe;        /* Ptr to the probe structure. */
  400 };
  401 
  402 struct sdt_probe {
  403         int             version;        /* Set to sizeof(struct sdt_probe). */
  404         struct sdt_provider *prov;      /* Ptr to the provider structure. */
  405         TAILQ_ENTRY(sdt_probe)
  406                         probe_entry;    /* SDT probe list entry. */
  407         TAILQ_HEAD(, sdt_argtype) argtype_list;
  408         const char      *mod;
  409         const char      *func;
  410         const char      *name;
  411         id_t            id;             /* DTrace probe ID. */
  412         int             n_args;         /* Number of arguments. */
  413         struct linker_file *sdtp_lf;    /* Module in which we're defined. */
  414 };
  415 
  416 struct sdt_provider {
  417         char *name;                     /* Provider name. */
  418         TAILQ_ENTRY(sdt_provider)
  419                         prov_entry;     /* SDT provider list entry. */
  420         uintptr_t       id;             /* DTrace provider ID. */
  421         int             sdt_refs;       /* Number of module references. */
  422 };
  423 
  424 void sdt_probe_stub(uint32_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t,
  425     uintptr_t);
  426 
  427 SDT_PROVIDER_DECLARE(sdt);
  428 
  429 #endif /* _KERNEL */
  430 
  431 #endif /* _SYS_SDT_H */

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