1/*- 2 * SPDX-License-Identifier: BSD-2-Clause 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 * Statically Defined Tracing (SDT) definitions. 28 * 29 */ 30 31#ifndef _SYS_SDT_H 32#define _SYS_SDT_H 33 34#ifndef _KERNEL 35 36#define _DTRACE_VERSION 1 37 38#define DTRACE_PROBE(prov, name) { \ 39 extern void __dtrace_##prov##___##name(void); \ 40 __dtrace_##prov##___##name(); \ 41} 42 43#define DTRACE_PROBE1(prov, name, arg1) { \ 44 extern void __dtrace_##prov##___##name(unsigned long); \ 45 __dtrace_##prov##___##name((unsigned long)arg1); \ 46} 47 48#define DTRACE_PROBE2(prov, name, arg1, arg2) { \ 49 extern void __dtrace_##prov##___##name(unsigned long, \ 50 unsigned long); \ 51 __dtrace_##prov##___##name((unsigned long)arg1, \ 52 (unsigned long)arg2); \ 53} 54 55#define DTRACE_PROBE3(prov, name, arg1, arg2, arg3) { \ 56 extern void __dtrace_##prov##___##name(unsigned long, \ 57 unsigned long, unsigned long); \ 58 __dtrace_##prov##___##name((unsigned long)arg1, \ 59 (unsigned long)arg2, (unsigned long)arg3); \ 60} 61 62#define DTRACE_PROBE4(prov, name, arg1, arg2, arg3, arg4) { \ 63 extern void __dtrace_##prov##___##name(unsigned long, \ 64 unsigned long, unsigned long, unsigned long); \ 65 __dtrace_##prov##___##name((unsigned long)arg1, \ 66 (unsigned long)arg2, (unsigned long)arg3, \ 67 (unsigned long)arg4); \ 68} 69 70#define DTRACE_PROBE5(prov, name, arg1, arg2, arg3, arg4, arg5) { \ 71 extern void __dtrace_##prov##___##name(unsigned long, \ 72 unsigned long, unsigned long, unsigned long, unsigned long);\ 73 __dtrace_##prov##___##name((unsigned long)arg1, \ 74 (unsigned long)arg2, (unsigned long)arg3, \ 75 (unsigned long)arg4, (unsigned long)arg5); \ 76} 77 78#else /* _KERNEL */ 79 80#include <sys/linker_set.h> 81#include <machine/sdt_machdep.h> 82 83extern volatile bool sdt_probes_enabled; 84 85#ifndef KDTRACE_HOOKS 86 87#define __sdt_used __unused 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_PROBES_ENABLED() 0 94#define SDT_PROBE(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4) 95#define SDT_PROBE_ARGTYPE(prov, mod, func, name, num, type, xtype) 96 97#define SDT_PROBE_DEFINE0(prov, mod, func, name) 98#define SDT_PROBE_DEFINE1(prov, mod, func, name, arg0) 99#define SDT_PROBE_DEFINE2(prov, mod, func, name, arg0, arg1) 100#define SDT_PROBE_DEFINE3(prov, mod, func, name, arg0, arg1, arg2) 101#define SDT_PROBE_DEFINE4(prov, mod, func, name, arg0, arg1, arg2, arg3) 102#define SDT_PROBE_DEFINE5(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4) 103#define SDT_PROBE_DEFINE6(prov, mod, func, name, arg0, arg1, arg2, \ 104 arg3, arg4, arg5) 105 106#define SDT_PROBE0(prov, mod, func, name) 107#define SDT_PROBE1(prov, mod, func, name, arg0) 108#define SDT_PROBE2(prov, mod, func, name, arg0, arg1) 109#define SDT_PROBE3(prov, mod, func, name, arg0, arg1, arg2) 110#define SDT_PROBE4(prov, mod, func, name, arg0, arg1, arg2, arg3) 111#define SDT_PROBE5(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4) 112#define SDT_PROBE6(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4, arg5) 113 114#define MIB_SDT_PROBE1(...) 115#define MIB_SDT_PROBE2(...) 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) 129 130#define DTRACE_PROBE(name) 131#define DTRACE_PROBE1(name, type0, arg0) 132#define DTRACE_PROBE2(name, type0, arg0, type1, arg1) 133#define DTRACE_PROBE3(name, type0, arg0, type1, arg1, type2, arg2) 134#define DTRACE_PROBE4(name, type0, arg0, type1, arg1, type2, arg2, type3, arg3) 135#define DTRACE_PROBE5(name, type0, arg0, type1, arg1, type2, arg2, type3, arg3,\ 136 type4, arg4) 137 138#else 139 140void sdt_probe(uint32_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, 141 uintptr_t); 142void sdt_probe6(uint32_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, 143 uintptr_t, uintptr_t); 144 145#define _SDT_TRACEPOINT_SET sdt_tracepoint_set 146#define _SDT_TRACEPOINT_SECTION "set_sdt_tracepoint_set" 147 148bool sdt_tracepoint_valid(uintptr_t patchpoint, uintptr_t target); 149void sdt_tracepoint_patch(uintptr_t patchpoint, uintptr_t target); 150void sdt_tracepoint_restore(uintptr_t patchpoint); 151 152#define __sdt_used 153 154SET_DECLARE(sdt_providers_set, struct sdt_provider); 155SET_DECLARE(sdt_probes_set, struct sdt_probe); 156SET_DECLARE(sdt_argtypes_set, struct sdt_argtype); 157 158#define _SDT_PROBE_NAME(prov, mod, func, name) \ 159 sdt_##prov##_##mod##_##func##_##name 160#define _SDT_PROVIDER_NAME(prov) \ 161 sdt_provider_##prov 162 163#define SDT_PROVIDER_DEFINE(_prov) \ 164 struct sdt_provider _SDT_PROVIDER_NAME(_prov)[1] = { \ 165 [0] = { .name = #_prov }, \ 166 }; \ 167 DATA_SET(sdt_providers_set, _SDT_PROVIDER_NAME(_prov)) 168 169#define SDT_PROVIDER_DECLARE(prov) \ 170 extern struct sdt_provider _SDT_PROVIDER_NAME(prov)[1] 171 172#define SDT_PROBE_DEFINE(_prov, _mod, _func, _name) \ 173 struct sdt_probe _SDT_PROBE_NAME(_prov, _mod, _func, _name)[1] = { \ 174 [0] = { \ 175 .version = sizeof(struct sdt_probe), \ 176 .prov = _SDT_PROVIDER_NAME(_prov), \ 177 .mod = #_mod, \ 178 .func = #_func, \ 179 .name = #_name, \ 180 }, \ 181 }; \ 182 DATA_SET(sdt_probes_set, _SDT_PROBE_NAME(_prov, _mod, _func, _name)) 183 184#define SDT_PROBE_DECLARE(prov, mod, func, name) \ 185 extern struct sdt_probe _SDT_PROBE_NAME(prov, mod, func, name)[1] 186 187#define SDT_PROBES_ENABLED() __predict_false(sdt_probes_enabled) 188 189#ifdef _ILP32 190#define _SDT_ASM_WORD ".long" 191#else 192#define _SDT_ASM_WORD ".quad" 193#endif 194 195#ifndef _SDT_ASM_PROBE_CONSTRAINT 196#define _SDT_ASM_PROBE_CONSTRAINT "i" 197#endif 198#ifndef _SDT_ASM_PROBE_OPERAND 199#define _SDT_ASM_PROBE_OPERAND "c" 200#endif 201 202/* 203 * The asm below generates records corresponding to the structure's layout, so 204 * the two must be kept in sync. 205 */ 206struct sdt_tracepoint { 207 struct sdt_probe *probe; 208 uintptr_t patchpoint; 209 uintptr_t target; 210 STAILQ_ENTRY(sdt_tracepoint) tracepoint_entry; 211}; 212 213#define __SDT_PROBE(prov, mod, func, name, uniq, f, ...) do { \ 214 __WEAK(__CONCAT(__start_set_, _SDT_TRACEPOINT_SET)); \ 215 __WEAK(__CONCAT(__stop_set_, _SDT_TRACEPOINT_SET)); \ 216 asm goto( \ 217 "0:\n" \ 218 _SDT_ASM_PATCH_INSTR "\n" \ 219 ".pushsection " _SDT_TRACEPOINT_SECTION ", \"aw\"\n" \ 220 _SDT_ASM_WORD " %" _SDT_ASM_PROBE_OPERAND "0\n" \ 221 _SDT_ASM_WORD " 0b\n" \ 222 _SDT_ASM_WORD " %l1\n" \ 223 _SDT_ASM_WORD " 0\n" \ 224 ".popsection\n" \ 225 : \ 226 : _SDT_ASM_PROBE_CONSTRAINT (_SDT_PROBE_NAME(prov, mod, \ 227 func, name)) \ 228 : \ 229 : __sdt_probe##uniq); \ 230 if (0) { \ 231__sdt_probe##uniq:; \ 232 f(_SDT_PROBE_NAME(prov, mod, func, name)->id, __VA_ARGS__); \ 233 } \ 234} while (0) 235#define _SDT_PROBE(prov, mod, func, name, uniq, f, ...) \ 236 __SDT_PROBE(prov, mod, func, name, uniq, f, __VA_ARGS__) 237#define SDT_PROBE(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4) \ 238 _SDT_PROBE(prov, mod, func, name, __COUNTER__, sdt_probe, \ 239 (uintptr_t)arg0, (uintptr_t)arg1, (uintptr_t)arg2, \ 240 (uintptr_t)arg3, (uintptr_t)arg4) 241 242#define SDT_PROBE_ARGTYPE(_prov, _mod, _func, _name, _num, _type, _xtype) \ 243 static struct sdt_argtype \ 244 sdta_##_prov##_##_mod##_##_func##_##_name##_num[1] = { \ 245 [0] = { \ 246 .ndx = _num, \ 247 .type = _type, \ 248 .xtype = _xtype, \ 249 .probe = _SDT_PROBE_NAME(_prov, _mod, _func, _name), \ 250 }, \ 251 }; \ 252 DATA_SET(sdt_argtypes_set, \ 253 sdta_##_prov##_##_mod##_##_func##_##_name##_num); 254 255#define SDT_PROBE_DEFINE0(prov, mod, func, name) \ 256 SDT_PROBE_DEFINE(prov, mod, func, name) 257 258#define SDT_PROBE_DEFINE1(prov, mod, func, name, arg0) \ 259 SDT_PROBE_DEFINE(prov, mod, func, name); \ 260 SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, NULL) 261 262#define SDT_PROBE_DEFINE2(prov, mod, func, name, arg0, arg1) \ 263 SDT_PROBE_DEFINE(prov, mod, func, name); \ 264 SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, NULL); \ 265 SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, NULL) 266 267#define SDT_PROBE_DEFINE3(prov, mod, func, name, arg0, arg1, arg2)\ 268 SDT_PROBE_DEFINE(prov, mod, func, name); \ 269 SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, NULL); \ 270 SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, NULL); \ 271 SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, NULL) 272 273#define SDT_PROBE_DEFINE4(prov, mod, func, name, arg0, arg1, arg2, arg3) \ 274 SDT_PROBE_DEFINE(prov, mod, func, name); \ 275 SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, NULL); \ 276 SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, NULL); \ 277 SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, NULL); \ 278 SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3, NULL) 279 280#define SDT_PROBE_DEFINE5(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4) \ 281 SDT_PROBE_DEFINE(prov, mod, func, name); \ 282 SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, NULL); \ 283 SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, NULL); \ 284 SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, NULL); \ 285 SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3, NULL); \ 286 SDT_PROBE_ARGTYPE(prov, mod, func, name, 4, arg4, NULL) 287 288#define SDT_PROBE_DEFINE6(prov, mod, func, name, arg0, arg1, arg2, arg3,\ 289 arg4, arg5) \ 290 SDT_PROBE_DEFINE(prov, mod, func, name); \ 291 SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, NULL); \ 292 SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, NULL); \ 293 SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, NULL); \ 294 SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3, NULL); \ 295 SDT_PROBE_ARGTYPE(prov, mod, func, name, 4, arg4, NULL); \ 296 SDT_PROBE_ARGTYPE(prov, mod, func, name, 5, arg5, NULL) 297 298#define SDT_PROBE_DEFINE0_XLATE(prov, mod, func, name) \ 299 SDT_PROBE_DEFINE(prov, mod, func, name) 300 301#define SDT_PROBE_DEFINE1_XLATE(prov, mod, func, name, arg0, xarg0) \ 302 SDT_PROBE_DEFINE(prov, mod, func, name); \ 303 SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, xarg0) 304 305#define SDT_PROBE_DEFINE2_XLATE(prov, mod, func, name, arg0, xarg0, \ 306 arg1, xarg1) \ 307 SDT_PROBE_DEFINE(prov, mod, func, name); \ 308 SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, xarg0); \ 309 SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, xarg1) 310 311#define SDT_PROBE_DEFINE3_XLATE(prov, mod, func, name, arg0, xarg0, \ 312 arg1, xarg1, arg2, xarg2) \ 313 SDT_PROBE_DEFINE(prov, mod, func, name); \ 314 SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, xarg0); \ 315 SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, xarg1); \ 316 SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, xarg2) 317 318#define SDT_PROBE_DEFINE4_XLATE(prov, mod, func, name, arg0, xarg0, \ 319 arg1, xarg1, arg2, xarg2, arg3, xarg3) \ 320 SDT_PROBE_DEFINE(prov, mod, func, name); \ 321 SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, xarg0); \ 322 SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, xarg1); \ 323 SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, xarg2); \ 324 SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3, xarg3) 325 326#define SDT_PROBE_DEFINE5_XLATE(prov, mod, func, name, arg0, xarg0, \ 327 arg1, xarg1, arg2, xarg2, arg3, xarg3, arg4, xarg4) \ 328 SDT_PROBE_DEFINE(prov, mod, func, name); \ 329 SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, xarg0); \ 330 SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, xarg1); \ 331 SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, xarg2); \ 332 SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3, xarg3); \ 333 SDT_PROBE_ARGTYPE(prov, mod, func, name, 4, arg4, xarg4) 334 335#define SDT_PROBE_DEFINE6_XLATE(prov, mod, func, name, arg0, xarg0, \ 336 arg1, xarg1, arg2, xarg2, arg3, xarg3, arg4, xarg4, arg5, xarg5) \ 337 SDT_PROBE_DEFINE(prov, mod, func, name); \ 338 SDT_PROBE_ARGTYPE(prov, mod, func, name, 0, arg0, xarg0); \ 339 SDT_PROBE_ARGTYPE(prov, mod, func, name, 1, arg1, xarg1); \ 340 SDT_PROBE_ARGTYPE(prov, mod, func, name, 2, arg2, xarg2); \ 341 SDT_PROBE_ARGTYPE(prov, mod, func, name, 3, arg3, xarg3); \ 342 SDT_PROBE_ARGTYPE(prov, mod, func, name, 4, arg4, xarg4); \ 343 SDT_PROBE_ARGTYPE(prov, mod, func, name, 5, arg5, xarg5) 344 345#define SDT_PROBE0(prov, mod, func, name) \ 346 SDT_PROBE(prov, mod, func, name, 0, 0, 0, 0, 0) 347#define SDT_PROBE1(prov, mod, func, name, arg0) \ 348 SDT_PROBE(prov, mod, func, name, arg0, 0, 0, 0, 0) 349#define SDT_PROBE2(prov, mod, func, name, arg0, arg1) \ 350 SDT_PROBE(prov, mod, func, name, arg0, arg1, 0, 0, 0) 351#define SDT_PROBE3(prov, mod, func, name, arg0, arg1, arg2) \ 352 SDT_PROBE(prov, mod, func, name, arg0, arg1, arg2, 0, 0) 353#define SDT_PROBE4(prov, mod, func, name, arg0, arg1, arg2, arg3) \ 354 SDT_PROBE(prov, mod, func, name, arg0, arg1, arg2, arg3, 0) 355#define SDT_PROBE5(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4) \ 356 SDT_PROBE(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4) 357#define SDT_PROBE6(prov, mod, func, name, arg0, arg1, arg2, arg3, arg4, arg5) \ 358 _SDT_PROBE(prov, mod, func, name, __COUNTER__, sdt_probe6, \ 359 (uintptr_t)arg0, (uintptr_t)arg1, (uintptr_t)arg2, \ 360 (uintptr_t)arg3, (uintptr_t)arg4, (uintptr_t)arg5) 361 362#ifndef KDTRACE_NO_MIB_SDT 363#define MIB_SDT_PROBE1(...) SDT_PROBE1(mib, __VA_ARGS__) 364#define MIB_SDT_PROBE2(...) SDT_PROBE2(mib, __VA_ARGS__) 365#else 366#define MIB_SDT_PROBE1(...) 367#define MIB_SDT_PROBE2(...) 368#endif 369 370#define DTRACE_PROBE_IMPL_START(name, arg0, arg1, arg2, arg3, arg4) do { \ 371 static SDT_PROBE_DEFINE(sdt, , , name); \ 372 SDT_PROBE(sdt, , , name, arg0, arg1, arg2, arg3, arg4); 373#define DTRACE_PROBE_IMPL_END } while (0) 374 375#define DTRACE_PROBE(name) \ 376 DTRACE_PROBE_IMPL_START(name, 0, 0, 0, 0, 0) \ 377 DTRACE_PROBE_IMPL_END 378 379#define DTRACE_PROBE1(name, type0, arg0) \ 380 DTRACE_PROBE_IMPL_START(name, arg0, 0, 0, 0, 0) \ 381 SDT_PROBE_ARGTYPE(sdt, , , name, 0, #type0, NULL); \ 382 DTRACE_PROBE_IMPL_END 383 384#define DTRACE_PROBE2(name, type0, arg0, type1, arg1) \ 385 DTRACE_PROBE_IMPL_START(name, arg0, arg1, 0, 0, 0) \ 386 SDT_PROBE_ARGTYPE(sdt, , , name, 0, #type0, NULL); \ 387 SDT_PROBE_ARGTYPE(sdt, , , name, 1, #type1, NULL); \ 388 DTRACE_PROBE_IMPL_END 389 390#define DTRACE_PROBE3(name, type0, arg0, type1, arg1, type2, arg2) \ 391 DTRACE_PROBE_IMPL_START(name, arg0, arg1, arg2, 0, 0) \ 392 SDT_PROBE_ARGTYPE(sdt, , , name, 0, #type0, NULL); \ 393 SDT_PROBE_ARGTYPE(sdt, , , name, 1, #type1, NULL); \ 394 SDT_PROBE_ARGTYPE(sdt, , , name, 2, #type2, NULL); \ 395 DTRACE_PROBE_IMPL_END 396 397#define DTRACE_PROBE4(name, type0, arg0, type1, arg1, type2, arg2, type3, arg3) \ 398 DTRACE_PROBE_IMPL_START(name, arg0, arg1, arg2, arg3, 0) \ 399 SDT_PROBE_ARGTYPE(sdt, , , name, 0, #type0, NULL); \ 400 SDT_PROBE_ARGTYPE(sdt, , , name, 1, #type1, NULL); \ 401 SDT_PROBE_ARGTYPE(sdt, , , name, 2, #type2, NULL); \ 402 SDT_PROBE_ARGTYPE(sdt, , , name, 3, #type3, NULL); \ 403 DTRACE_PROBE_IMPL_END 404 405#define DTRACE_PROBE5(name, type0, arg0, type1, arg1, type2, arg2, type3, arg3, \ 406 type4, arg4) \ 407 DTRACE_PROBE_IMPL_START(name, arg0, arg1, arg2, arg3, arg4) \ 408 SDT_PROBE_ARGTYPE(sdt, , , name, 0, #type0, NULL); \ 409 SDT_PROBE_ARGTYPE(sdt, , , name, 1, #type1, NULL); \ 410 SDT_PROBE_ARGTYPE(sdt, , , name, 2, #type2, NULL); \ 411 SDT_PROBE_ARGTYPE(sdt, , , name, 3, #type3, NULL); \ 412 SDT_PROBE_ARGTYPE(sdt, , , name, 4, #type4, NULL); \ 413 DTRACE_PROBE_IMPL_END 414 415#endif /* KDTRACE_HOOKS */ 416 417/* 418 * This type definition must match that of dtrace_probe. It is defined this 419 * way to avoid having to rely on CDDL code. 420 */ 421typedef void (*sdt_probe_func_t)(uint32_t, uintptr_t arg0, uintptr_t arg1, 422 uintptr_t arg2, uintptr_t arg3, uintptr_t arg4, uintptr_t arg5); 423 424/* 425 * The 'sdt' provider will set it to dtrace_probe when it loads. 426 */ 427extern sdt_probe_func_t sdt_probe_func; 428 429struct sdt_probe; 430struct sdt_provider; 431struct linker_file; 432 433struct sdt_argtype { 434 int ndx; /* Argument index. */ 435 const char *type; /* Argument type string. */ 436 const char *xtype; /* Translated argument type. */ 437 TAILQ_ENTRY(sdt_argtype) 438 argtype_entry; /* Argument type list entry. */ 439 struct sdt_probe *probe; /* Ptr to the probe structure. */ 440}; 441 442struct sdt_probe { 443 int version; /* Set to sizeof(struct sdt_probe). */ 444 struct sdt_provider *prov; /* Ptr to the provider structure. */ 445 TAILQ_ENTRY(sdt_probe) 446 probe_entry; /* SDT probe list entry. */ 447 TAILQ_HEAD(, sdt_argtype) argtype_list; 448 STAILQ_HEAD(, sdt_tracepoint) tracepoint_list; 449 const char *mod; 450 const char *func; 451 const char *name; 452 id_t id; /* DTrace probe ID. */ 453 int n_args; /* Number of arguments. */ 454 struct linker_file *sdtp_lf; /* Module in which we're defined. */ 455}; 456 457struct sdt_provider { 458 char *name; /* Provider name. */ 459 TAILQ_ENTRY(sdt_provider) 460 prov_entry; /* SDT provider list entry. */ 461 uintptr_t id; /* DTrace provider ID. */ 462 int sdt_refs; /* Number of module references. */ 463}; 464 465void sdt_probe_stub(uint32_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, 466 uintptr_t, uintptr_t); 467 468SDT_PROVIDER_DECLARE(sdt); 469 470#endif /* _KERNEL */ 471 472#endif /* _SYS_SDT_H */ 473