xref: /illumos-gate/usr/src/uts/common/sys/sdt.h (revision 9b664393d4fdda96221e6ea9ea95790d3c15be70)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 /*
22  * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
23  * Copyright (c) 2013 by Delphix. All rights reserved.
24  * Copyright 2018 Nexenta Systems, Inc.  All rights reserved.
25  */
26 
27 #ifndef _SYS_SDT_H
28 #define	_SYS_SDT_H
29 
30 #include <sys/stdint.h>
31 
32 #ifdef	__cplusplus
33 extern "C" {
34 #endif
35 
36 #ifndef _KERNEL
37 
38 #define	DTRACE_PROBE(provider, name) {					\
39 	extern void __dtrace_##provider##___##name(void);		\
40 	__dtrace_##provider##___##name();				\
41 }
42 
43 #define	DTRACE_PROBE1(provider, name, arg1) {				\
44 	extern void __dtrace_##provider##___##name(unsigned long);	\
45 	__dtrace_##provider##___##name((unsigned long)arg1);		\
46 }
47 
48 #define	DTRACE_PROBE2(provider, name, arg1, arg2) {			\
49 	extern void __dtrace_##provider##___##name(unsigned long,	\
50 	    unsigned long);						\
51 	__dtrace_##provider##___##name((unsigned long)arg1,		\
52 	    (unsigned long)arg2);					\
53 }
54 
55 #define	DTRACE_PROBE3(provider, name, arg1, arg2, arg3) {		\
56 	extern void __dtrace_##provider##___##name(unsigned long,	\
57 	    unsigned long, unsigned long);				\
58 	__dtrace_##provider##___##name((unsigned long)arg1,		\
59 	    (unsigned long)arg2, (unsigned long)arg3);			\
60 }
61 
62 #define	DTRACE_PROBE4(provider, name, arg1, arg2, arg3, arg4) {		\
63 	extern void __dtrace_##provider##___##name(unsigned long,	\
64 	    unsigned long, unsigned long, unsigned long);		\
65 	__dtrace_##provider##___##name((unsigned long)arg1,		\
66 	    (unsigned long)arg2, (unsigned long)arg3,			\
67 	    (unsigned long)arg4);					\
68 }
69 
70 #define	DTRACE_PROBE5(provider, name, arg1, arg2, arg3, arg4, arg5) {	\
71 	extern void __dtrace_##provider##___##name(unsigned long,	\
72 	    unsigned long, unsigned long, unsigned long, unsigned long);\
73 	__dtrace_##provider##___##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 #define	DTRACE_PROBE(name)	{					\
81 	extern void __dtrace_probe_##name(void);			\
82 	__dtrace_probe_##name();					\
83 }
84 
85 #define	DTRACE_PROBE1(name, type1, arg1) {				\
86 	extern void __dtrace_probe_##name(uintptr_t);			\
87 	__dtrace_probe_##name((uintptr_t)(arg1));			\
88 }
89 
90 #define	DTRACE_PROBE2(name, type1, arg1, type2, arg2) {			\
91 	extern void __dtrace_probe_##name(uintptr_t, uintptr_t);	\
92 	__dtrace_probe_##name((uintptr_t)(arg1), (uintptr_t)(arg2));	\
93 }
94 
95 #define	DTRACE_PROBE3(name, type1, arg1, type2, arg2, type3, arg3) {	\
96 	extern void __dtrace_probe_##name(uintptr_t, uintptr_t, uintptr_t); \
97 	__dtrace_probe_##name((uintptr_t)(arg1), (uintptr_t)(arg2),	\
98 	    (uintptr_t)(arg3));						\
99 }
100 
101 #define	DTRACE_PROBE4(name, type1, arg1, type2, arg2,			\
102     type3, arg3, type4, arg4) {						\
103 	extern void __dtrace_probe_##name(uintptr_t, uintptr_t,		\
104 	    uintptr_t, uintptr_t);					\
105 	__dtrace_probe_##name((uintptr_t)(arg1), (uintptr_t)(arg2),	\
106 	    (uintptr_t)(arg3), (uintptr_t)(arg4));			\
107 }
108 
109 #define	DTRACE_PROBE5(name, type1, arg1, type2, arg2,			\
110     type3, arg3, type4, arg4, type5, arg5) {				\
111 	extern void __dtrace_probe_##name(uintptr_t, uintptr_t,		\
112 	    uintptr_t, uintptr_t, uintptr_t);				\
113 	__dtrace_probe_##name((uintptr_t)(arg1), (uintptr_t)(arg2),	\
114 	    (uintptr_t)(arg3), (uintptr_t)(arg4), (uintptr_t)(arg5));	\
115 }
116 
117 #define	DTRACE_PROBE6(name, type1, arg1, type2, arg2,			\
118     type3, arg3, type4, arg4, type5, arg5, type6, arg6) {		\
119 	extern void __dtrace_probe_##name(uintptr_t, uintptr_t,		\
120 	    uintptr_t, uintptr_t, uintptr_t, uintptr_t);		\
121 	__dtrace_probe_##name((uintptr_t)(arg1), (uintptr_t)(arg2),	\
122 	    (uintptr_t)(arg3), (uintptr_t)(arg4), (uintptr_t)(arg5),	\
123 	    (uintptr_t)(arg6));						\
124 }
125 
126 #define	DTRACE_PROBE7(name, type1, arg1, type2, arg2, type3, arg3,	\
127     type4, arg4, type5, arg5, type6, arg6, type7, arg7) {		\
128 	extern void __dtrace_probe_##name(uintptr_t, uintptr_t,		\
129 	    uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t);	\
130 	__dtrace_probe_##name((uintptr_t)(arg1), (uintptr_t)(arg2),	\
131 	    (uintptr_t)(arg3), (uintptr_t)(arg4), (uintptr_t)(arg5),	\
132 	    (uintptr_t)(arg6), (uintptr_t)(arg7));			\
133 }
134 
135 #define	DTRACE_PROBE8(name, type1, arg1, type2, arg2, type3, arg3,	\
136     type4, arg4, type5, arg5, type6, arg6, type7, arg7, type8, arg8) {	\
137 	extern void __dtrace_probe_##name(uintptr_t, uintptr_t,		\
138 	    uintptr_t, uintptr_t, uintptr_t, uintptr_t,			\
139 	    uintptr_t, uintptr_t);					\
140 	__dtrace_probe_##name((uintptr_t)(arg1), (uintptr_t)(arg2),	\
141 	    (uintptr_t)(arg3), (uintptr_t)(arg4), (uintptr_t)(arg5),	\
142 	    (uintptr_t)(arg6), (uintptr_t)(arg7), (uintptr_t)(arg8));	\
143 }
144 
145 #define	DTRACE_SCHED(name)						\
146 	DTRACE_PROBE(__sched_##name);
147 
148 #define	DTRACE_SCHED1(name, type1, arg1)				\
149 	DTRACE_PROBE1(__sched_##name, type1, arg1);
150 
151 #define	DTRACE_SCHED2(name, type1, arg1, type2, arg2)			\
152 	DTRACE_PROBE2(__sched_##name, type1, arg1, type2, arg2);
153 
154 #define	DTRACE_SCHED3(name, type1, arg1, type2, arg2, type3, arg3)	\
155 	DTRACE_PROBE3(__sched_##name, type1, arg1, type2, arg2, type3, arg3);
156 
157 #define	DTRACE_SCHED4(name, type1, arg1, type2, arg2,			\
158     type3, arg3, type4, arg4)						\
159 	DTRACE_PROBE4(__sched_##name, type1, arg1, type2, arg2,		\
160 	    type3, arg3, type4, arg4);
161 
162 #define	DTRACE_PROC(name)						\
163 	DTRACE_PROBE(__proc_##name);
164 
165 #define	DTRACE_PROC1(name, type1, arg1)					\
166 	DTRACE_PROBE1(__proc_##name, type1, arg1);
167 
168 #define	DTRACE_PROC2(name, type1, arg1, type2, arg2)			\
169 	DTRACE_PROBE2(__proc_##name, type1, arg1, type2, arg2);
170 
171 #define	DTRACE_PROC3(name, type1, arg1, type2, arg2, type3, arg3)	\
172 	DTRACE_PROBE3(__proc_##name, type1, arg1, type2, arg2, type3, arg3);
173 
174 #define	DTRACE_PROC4(name, type1, arg1, type2, arg2,			\
175     type3, arg3, type4, arg4)						\
176 	DTRACE_PROBE4(__proc_##name, type1, arg1, type2, arg2,		\
177 	    type3, arg3, type4, arg4);
178 
179 #define	DTRACE_IO(name)							\
180 	DTRACE_PROBE(__io_##name);
181 
182 #define	DTRACE_IO1(name, type1, arg1)					\
183 	DTRACE_PROBE1(__io_##name, type1, arg1);
184 
185 #define	DTRACE_IO2(name, type1, arg1, type2, arg2)			\
186 	DTRACE_PROBE2(__io_##name, type1, arg1, type2, arg2);
187 
188 #define	DTRACE_IO3(name, type1, arg1, type2, arg2, type3, arg3)	\
189 	DTRACE_PROBE3(__io_##name, type1, arg1, type2, arg2, type3, arg3);
190 
191 #define	DTRACE_IO4(name, type1, arg1, type2, arg2,			\
192     type3, arg3, type4, arg4)						\
193 	DTRACE_PROBE4(__io_##name, type1, arg1, type2, arg2,		\
194 	    type3, arg3, type4, arg4);
195 
196 #define	DTRACE_ISCSI_2(name, type1, arg1, type2, arg2)			\
197 	DTRACE_PROBE2(__iscsi_##name, type1, arg1, type2, arg2);
198 
199 #define	DTRACE_ISCSI_3(name, type1, arg1, type2, arg2, type3, arg3)	\
200 	DTRACE_PROBE3(__iscsi_##name, type1, arg1, type2, arg2, type3, arg3);
201 
202 #define	DTRACE_ISCSI_4(name, type1, arg1, type2, arg2,			\
203     type3, arg3, type4, arg4)						\
204 	DTRACE_PROBE4(__iscsi_##name, type1, arg1, type2, arg2,		\
205 	    type3, arg3, type4, arg4);
206 
207 #define	DTRACE_ISCSI_5(name, type1, arg1, type2, arg2,			\
208     type3, arg3, type4, arg4, type5, arg5)				\
209 	DTRACE_PROBE5(__iscsi_##name, type1, arg1, type2, arg2,		\
210 	    type3, arg3, type4, arg4, type5, arg5);
211 
212 #define	DTRACE_ISCSI_6(name, type1, arg1, type2, arg2,			\
213     type3, arg3, type4, arg4, type5, arg5, type6, arg6)			\
214 	DTRACE_PROBE6(__iscsi_##name, type1, arg1, type2, arg2,		\
215 	    type3, arg3, type4, arg4, type5, arg5, type6, arg6);
216 
217 #define	DTRACE_ISCSI_7(name, type1, arg1, type2, arg2,			\
218     type3, arg3, type4, arg4, type5, arg5, type6, arg6, type7, arg7)	\
219 	DTRACE_PROBE7(__iscsi_##name, type1, arg1, type2, arg2,		\
220 	    type3, arg3, type4, arg4, type5, arg5, type6, arg6,		\
221 	    type7, arg7);
222 
223 #define	DTRACE_ISCSI_8(name, type1, arg1, type2, arg2,			\
224     type3, arg3, type4, arg4, type5, arg5, type6, arg6,			\
225     type7, arg7, type8, arg8)						\
226 	DTRACE_PROBE8(__iscsi_##name, type1, arg1, type2, arg2,		\
227 	    type3, arg3, type4, arg4, type5, arg5, type6, arg6,		\
228 	    type7, arg7, type8, arg8);
229 
230 #define	DTRACE_NFSV3_3(name, type1, arg1, type2, arg2,			\
231     type3, arg3)							\
232 	DTRACE_PROBE3(__nfsv3_##name, type1, arg1, type2, arg2,		\
233 	    type3, arg3);
234 
235 #define	DTRACE_NFSV3_4(name, type1, arg1, type2, arg2,			\
236     type3, arg3, type4, arg4)						\
237 	DTRACE_PROBE4(__nfsv3_##name, type1, arg1, type2, arg2,		\
238 	    type3, arg3, type4, arg4);
239 
240 #define	DTRACE_NFSV3_5(name, type1, arg1, type2, arg2,			\
241     type3, arg3, type4, arg4, type5, arg5)				\
242 	DTRACE_PROBE5(__nfsv3_##name, type1, arg1, type2, arg2,		\
243 	    type3, arg3, type4, arg4, type5, arg5);
244 
245 #define	DTRACE_NFSV4_1(name, type1, arg1) \
246 	DTRACE_PROBE1(__nfsv4_##name, type1, arg1);
247 
248 #define	DTRACE_NFSV4_2(name, type1, arg1, type2, arg2) \
249 	DTRACE_PROBE2(__nfsv4_##name, type1, arg1, type2, arg2);
250 
251 #define	DTRACE_NFSV4_3(name, type1, arg1, type2, arg2, type3, arg3) \
252 	DTRACE_PROBE3(__nfsv4_##name, type1, arg1, type2, arg2, type3, arg3);
253 
254 /*
255  * The SMB probes are done a little differently from the other probes
256  * in this file for the benefit of the libfksmbsrv USDT provider.
257  * See: lib/smbsrv/libfksmbsrv/common/sys/sdt.h
258  */
259 #define	DTRACE_SMB_START(name, type1, arg1) \
260 	DTRACE_PROBE1(__smb_##name##__start, type1, arg1);
261 #define	DTRACE_SMB_DONE(name, type1, arg1) \
262 	DTRACE_PROBE1(__smb_##name##__done, type1, arg1);
263 
264 #define	DTRACE_SMB2_START(name, type1, arg1) \
265 	DTRACE_PROBE1(__smb2_##name##__start, type1, arg1);
266 #define	DTRACE_SMB2_DONE(name, type1, arg1) \
267 	DTRACE_PROBE1(__smb2_##name##__done, type1, arg1);
268 
269 #define	DTRACE_IP(name)						\
270 	DTRACE_PROBE(__ip_##name);
271 
272 #define	DTRACE_IP1(name, type1, arg1)					\
273 	DTRACE_PROBE1(__ip_##name, type1, arg1);
274 
275 #define	DTRACE_IP2(name, type1, arg1, type2, arg2)			\
276 	DTRACE_PROBE2(__ip_##name, type1, arg1, type2, arg2);
277 
278 #define	DTRACE_IP3(name, type1, arg1, type2, arg2, type3, arg3)	\
279 	DTRACE_PROBE3(__ip_##name, type1, arg1, type2, arg2, type3, arg3);
280 
281 #define	DTRACE_IP4(name, type1, arg1, type2, arg2,			\
282     type3, arg3, type4, arg4)						\
283 	DTRACE_PROBE4(__ip_##name, type1, arg1, type2, arg2,		\
284 	    type3, arg3, type4, arg4);
285 
286 #define	DTRACE_IP5(name, type1, arg1, type2, arg2,			\
287     type3, arg3, type4, arg4, type5, arg5)				\
288 	DTRACE_PROBE5(__ip_##name, type1, arg1, type2, arg2,		\
289 	    type3, arg3, type4, arg4, type5, arg5);
290 
291 #define	DTRACE_IP6(name, type1, arg1, type2, arg2,			\
292     type3, arg3, type4, arg4, type5, arg5, type6, arg6)			\
293 	DTRACE_PROBE6(__ip_##name, type1, arg1, type2, arg2,		\
294 	    type3, arg3, type4, arg4, type5, arg5, type6, arg6);
295 
296 #define	DTRACE_IP7(name, type1, arg1, type2, arg2, type3, arg3,		\
297     type4, arg4, type5, arg5, type6, arg6, type7, arg7)			\
298 	DTRACE_PROBE7(__ip_##name, type1, arg1, type2, arg2,		\
299 	    type3, arg3, type4, arg4, type5, arg5, type6, arg6,		\
300 	    type7, arg7);
301 
302 #define	DTRACE_TCP(name)						\
303 	DTRACE_PROBE(__tcp_##name);
304 
305 #define	DTRACE_TCP1(name, type1, arg1)					\
306 	DTRACE_PROBE1(__tcp_##name, type1, arg1);
307 
308 #define	DTRACE_TCP2(name, type1, arg1, type2, arg2)			\
309 	DTRACE_PROBE2(__tcp_##name, type1, arg1, type2, arg2);
310 
311 #define	DTRACE_TCP3(name, type1, arg1, type2, arg2, type3, arg3)	\
312 	DTRACE_PROBE3(__tcp_##name, type1, arg1, type2, arg2, type3, arg3);
313 
314 #define	DTRACE_TCP4(name, type1, arg1, type2, arg2,			\
315     type3, arg3, type4, arg4)						\
316 	DTRACE_PROBE4(__tcp_##name, type1, arg1, type2, arg2,		\
317 	    type3, arg3, type4, arg4);
318 
319 #define	DTRACE_TCP5(name, type1, arg1, type2, arg2,			\
320     type3, arg3, type4, arg4, type5, arg5)				\
321 	DTRACE_PROBE5(__tcp_##name, type1, arg1, type2, arg2,		\
322 	    type3, arg3, type4, arg4, type5, arg5);
323 
324 #define	DTRACE_TCP6(name, type1, arg1, type2, arg2,			\
325     type3, arg3, type4, arg4, type5, arg5, type6, arg6)			\
326 	DTRACE_PROBE6(__tcp_##name, type1, arg1, type2, arg2,		\
327 	    type3, arg3, type4, arg4, type5, arg5, type6, arg6);
328 
329 #define	DTRACE_UDP(name)						\
330 	DTRACE_PROBE(__udp_##name);
331 
332 #define	DTRACE_UDP1(name, type1, arg1)					\
333 	DTRACE_PROBE1(__udp_##name, type1, arg1);
334 
335 #define	DTRACE_UDP2(name, type1, arg1, type2, arg2)			\
336 	DTRACE_PROBE2(__udp_##name, type1, arg1, type2, arg2);
337 
338 #define	DTRACE_UDP3(name, type1, arg1, type2, arg2, type3, arg3)	\
339 	DTRACE_PROBE3(__udp_##name, type1, arg1, type2, arg2, type3, arg3);
340 
341 #define	DTRACE_UDP4(name, type1, arg1, type2, arg2,			\
342     type3, arg3, type4, arg4)						\
343 	DTRACE_PROBE4(__udp_##name, type1, arg1, type2, arg2,		\
344 	    type3, arg3, type4, arg4);
345 
346 #define	DTRACE_UDP5(name, type1, arg1, type2, arg2,			\
347     type3, arg3, type4, arg4, type5, arg5)				\
348 	DTRACE_PROBE5(__udp_##name, type1, arg1, type2, arg2,		\
349 	    type3, arg3, type4, arg4, type5, arg5);
350 
351 
352 #define	DTRACE_SYSEVENT2(name, type1, arg1, type2, arg2)		\
353 	DTRACE_PROBE2(__sysevent_##name, type1, arg1, type2, arg2);
354 
355 #define	DTRACE_XPV(name)						\
356 	DTRACE_PROBE(__xpv_##name);
357 
358 #define	DTRACE_XPV1(name, type1, arg1)					\
359 	DTRACE_PROBE1(__xpv_##name, type1, arg1);
360 
361 #define	DTRACE_XPV2(name, type1, arg1, type2, arg2)			\
362 	DTRACE_PROBE2(__xpv_##name, type1, arg1, type2, arg2);
363 
364 #define	DTRACE_XPV3(name, type1, arg1, type2, arg2, type3, arg3)	\
365 	DTRACE_PROBE3(__xpv_##name, type1, arg1, type2, arg2, type3, arg3);
366 
367 #define	DTRACE_XPV4(name, type1, arg1, type2, arg2, type3, arg3,	\
368 	    type4, arg4)						\
369 	DTRACE_PROBE4(__xpv_##name, type1, arg1, type2, arg2,		\
370 	    type3, arg3, type4, arg4);
371 
372 #define	DTRACE_FC_1(name, type1, arg1) \
373 	DTRACE_PROBE1(__fc_##name, type1, arg1);
374 
375 #define	DTRACE_FC_2(name, type1, arg1, type2, arg2) \
376 	DTRACE_PROBE2(__fc_##name, type1, arg1, type2, arg2);
377 
378 #define	DTRACE_FC_3(name, type1, arg1, type2, arg2, type3, arg3) \
379 	DTRACE_PROBE3(__fc_##name, type1, arg1, type2, arg2, type3, arg3);
380 
381 #define	DTRACE_FC_4(name, type1, arg1, type2, arg2, type3, arg3, type4, arg4) \
382 	DTRACE_PROBE4(__fc_##name, type1, arg1, type2, arg2, type3, arg3, \
383 	    type4, arg4);
384 
385 #define	DTRACE_FC_5(name, type1, arg1, type2, arg2, type3, arg3,	\
386 	    type4, arg4, type5, arg5)					\
387 	DTRACE_PROBE5(__fc_##name, type1, arg1, type2, arg2, type3, arg3, \
388 	    type4, arg4, type5, arg5);
389 
390 #define	DTRACE_SRP_1(name, type1, arg1)					\
391 	DTRACE_PROBE1(__srp_##name, type1, arg1);
392 
393 #define	DTRACE_SRP_2(name, type1, arg1, type2, arg2)			\
394 	DTRACE_PROBE2(__srp_##name, type1, arg1, type2, arg2);
395 
396 #define	DTRACE_SRP_3(name, type1, arg1, type2, arg2, type3, arg3)	\
397 	DTRACE_PROBE3(__srp_##name, type1, arg1, type2, arg2, type3, arg3);
398 
399 #define	DTRACE_SRP_4(name, type1, arg1, type2, arg2, type3, arg3,	\
400 	    type4, arg4)						\
401 	DTRACE_PROBE4(__srp_##name, type1, arg1, type2, arg2,		\
402 	    type3, arg3, type4, arg4);
403 
404 #define	DTRACE_SRP_5(name, type1, arg1, type2, arg2, type3, arg3,	\
405 	    type4, arg4, type5, arg5)					\
406 	DTRACE_PROBE5(__srp_##name, type1, arg1, type2, arg2,		\
407 	    type3, arg3, type4, arg4, type5, arg5);
408 
409 #define	DTRACE_SRP_6(name, type1, arg1, type2, arg2, type3, arg3,	\
410 	    type4, arg4, type5, arg5, type6, arg6)			\
411 	DTRACE_PROBE6(__srp_##name, type1, arg1, type2, arg2,		\
412 	    type3, arg3, type4, arg4, type5, arg5, type6, arg6);
413 
414 #define	DTRACE_SRP_7(name, type1, arg1, type2, arg2, type3, arg3,	\
415 	    type4, arg4, type5, arg5, type6, arg6, type7, arg7)		\
416 	DTRACE_PROBE7(__srp_##name, type1, arg1, type2, arg2,		\
417 	    type3, arg3, type4, arg4, type5, arg5, type6, arg6, type7, arg7);
418 
419 #define	DTRACE_SRP_8(name, type1, arg1, type2, arg2, type3, arg3,	\
420 	    type4, arg4, type5, arg5, type6, arg6, type7, arg7, type8, arg8) \
421 	DTRACE_PROBE8(__srp_##name, type1, arg1, type2, arg2,		\
422 	    type3, arg3, type4, arg4, type5, arg5, type6, arg6,		\
423 	    type7, arg7, type8, arg8);
424 
425 /*
426  * The set-error SDT probe is extra static, in that we declare its fake
427  * function literally, rather than with the DTRACE_PROBE1() macro.  This is
428  * necessary so that SET_ERROR() can evaluate to a value, which wouldn't
429  * be possible if it required multiple statements (to declare the function
430  * and then call it).
431  *
432  * SET_ERROR() uses the comma operator so that it can be used without much
433  * additional code.  For example, "return (EINVAL);" becomes
434  * "return (SET_ERROR(EINVAL));".  Note that the argument will be evaluated
435  * twice, so it should not have side effects (e.g. something like:
436  * "return (SET_ERROR(log_error(EINVAL, info)));" would log the error twice).
437  */
438 extern void __dtrace_probe_set__error(uintptr_t);
439 #define	SET_ERROR(err) (__dtrace_probe_set__error(err), err)
440 
441 #endif /* _KERNEL */
442 
443 extern const char *sdt_prefix;
444 
445 typedef struct sdt_probedesc {
446 	char			*sdpd_name;	/* name of this probe */
447 	unsigned long		sdpd_offset;	/* offset of call in text */
448 	struct sdt_probedesc	*sdpd_next;	/* next static probe */
449 } sdt_probedesc_t;
450 
451 #ifdef	__cplusplus
452 }
453 #endif
454 
455 #endif	/* _SYS_SDT_H */
456