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b728d87e MD |
1 | #ifndef _LTTNG_TRACEPOINT_H |
2 | #define _LTTNG_TRACEPOINT_H | |
3 | ||
4 | /* | |
e92f3e28 | 5 | * Copyright 2011-2012 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
b728d87e | 6 | * |
e92f3e28 MD |
7 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
8 | * of this software and associated documentation files (the "Software"), to deal | |
9 | * in the Software without restriction, including without limitation the rights | |
10 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
11 | * copies of the Software, and to permit persons to whom the Software is | |
12 | * furnished to do so, subject to the following conditions: | |
b728d87e | 13 | * |
e92f3e28 MD |
14 | * The above copyright notice and this permission notice shall be included in |
15 | * all copies or substantial portions of the Software. | |
d2428e87 MD |
16 | * |
17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
20 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
21 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
22 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
23 | * SOFTWARE. | |
b728d87e MD |
24 | */ |
25 | ||
76aca78d MD |
26 | #include <stdio.h> |
27 | #include <stdlib.h> | |
8fce9e2b | 28 | #include <lttng/tracepoint-types.h> |
40b2b5a4 | 29 | #include <lttng/tracepoint-rcu.h> |
b728d87e | 30 | #include <urcu/compiler.h> |
c082d14b | 31 | #include <urcu/system.h> |
deb6e540 | 32 | #include <dlfcn.h> /* for dlopen */ |
51920067 | 33 | #include <string.h> /* for memset */ |
b2f60c79 | 34 | #include <lttng/ust-config.h> /* for sdt */ |
a8909ba5 | 35 | #include <lttng/ust-compiler.h> |
b2f60c79 MD |
36 | |
37 | #ifdef LTTNG_UST_HAVE_SDT_INTEGRATION | |
23b75ae5 MJ |
38 | /* |
39 | * Instead of using SDT_USE_VARIADIC from 'sys/sdt.h', use our own namespaced | |
40 | * macros since the instrumented application might already have included | |
41 | * 'sys/sdt.h' without variadic support. | |
42 | */ | |
b2f60c79 | 43 | #include <sys/sdt.h> |
23b75ae5 MJ |
44 | |
45 | #define _LTTNG_SDT_NARG(...) \ | |
46 | __LTTNG_SDT_NARG(__VA_ARGS__, 12,11,10,9,8,7,6,5,4,3,2,1,0) | |
47 | ||
48 | #define __LTTNG_SDT_NARG(_0,_1,_2,_3,_4,_5,_6,_7,_8,_9,_10,_11,_12, N, ...) N | |
49 | ||
50 | #define _LTTNG_SDT_PROBE_N(provider, name, N, ...) \ | |
51 | _SDT_PROBE(provider, name, N, (__VA_ARGS__)) | |
52 | ||
53 | #define LTTNG_STAP_PROBEV(provider, name, ...) \ | |
54 | _LTTNG_SDT_PROBE_N(provider, name, _LTTNG_SDT_NARG(0, ##__VA_ARGS__), ##__VA_ARGS__) | |
55 | ||
b2f60c79 | 56 | #else |
afeea86f | 57 | #define LTTNG_STAP_PROBEV(...) |
b2f60c79 | 58 | #endif |
b728d87e MD |
59 | |
60 | #ifdef __cplusplus | |
61 | extern "C" { | |
62 | #endif | |
63 | ||
8da6d0c8 | 64 | #define tracepoint_enabled(provider, name) \ |
c082d14b | 65 | caa_unlikely(CMM_LOAD_SHARED(__tracepoint_##provider##___##name.state)) |
8da6d0c8 DS |
66 | |
67 | #define do_tracepoint(provider, name, ...) \ | |
68 | __tracepoint_cb_##provider##___##name(__VA_ARGS__) | |
69 | ||
23c8854a MD |
70 | #define tracepoint(provider, name, ...) \ |
71 | do { \ | |
afeea86f | 72 | LTTNG_STAP_PROBEV(provider, name, ## __VA_ARGS__); \ |
8da6d0c8 DS |
73 | if (tracepoint_enabled(provider, name)) \ |
74 | do_tracepoint(provider, name, __VA_ARGS__); \ | |
b728d87e MD |
75 | } while (0) |
76 | ||
77 | #define TP_ARGS(...) __VA_ARGS__ | |
78 | ||
79 | /* | |
80 | * TP_ARGS takes tuples of type, argument separated by a comma. | |
81 | * It can take up to 10 tuples (which means that less than 10 tuples is | |
82 | * fine too). | |
83 | * Each tuple is also separated by a comma. | |
84 | */ | |
df854e41 MD |
85 | #define __TP_COMBINE_TOKENS(_tokena, _tokenb) \ |
86 | _tokena##_tokenb | |
87 | #define _TP_COMBINE_TOKENS(_tokena, _tokenb) \ | |
88 | __TP_COMBINE_TOKENS(_tokena, _tokenb) | |
89 | #define __TP_COMBINE_TOKENS3(_tokena, _tokenb, _tokenc) \ | |
90 | _tokena##_tokenb##_tokenc | |
91 | #define _TP_COMBINE_TOKENS3(_tokena, _tokenb, _tokenc) \ | |
92 | __TP_COMBINE_TOKENS3(_tokena, _tokenb, _tokenc) | |
93 | #define __TP_COMBINE_TOKENS4(_tokena, _tokenb, _tokenc, _tokend) \ | |
94 | _tokena##_tokenb##_tokenc##_tokend | |
95 | #define _TP_COMBINE_TOKENS4(_tokena, _tokenb, _tokenc, _tokend) \ | |
96 | __TP_COMBINE_TOKENS4(_tokena, _tokenb, _tokenc, _tokend) | |
b728d87e | 97 | |
4495dd39 MD |
98 | /* |
99 | * _TP_EXVAR* extract the var names. | |
100 | * _TP_EXVAR1 and _TP_EXDATA_VAR1 are needed for -std=c99. | |
101 | */ | |
b728d87e | 102 | #define _TP_EXVAR0() |
4495dd39 | 103 | #define _TP_EXVAR1(a) |
b728d87e MD |
104 | #define _TP_EXVAR2(a,b) b |
105 | #define _TP_EXVAR4(a,b,c,d) b,d | |
106 | #define _TP_EXVAR6(a,b,c,d,e,f) b,d,f | |
107 | #define _TP_EXVAR8(a,b,c,d,e,f,g,h) b,d,f,h | |
108 | #define _TP_EXVAR10(a,b,c,d,e,f,g,h,i,j) b,d,f,h,j | |
109 | #define _TP_EXVAR12(a,b,c,d,e,f,g,h,i,j,k,l) b,d,f,h,j,l | |
110 | #define _TP_EXVAR14(a,b,c,d,e,f,g,h,i,j,k,l,m,n) b,d,f,h,j,l,n | |
111 | #define _TP_EXVAR16(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p) b,d,f,h,j,l,n,p | |
112 | #define _TP_EXVAR18(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r) b,d,f,h,j,l,n,p,r | |
113 | #define _TP_EXVAR20(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t) b,d,f,h,j,l,n,p,r,t | |
114 | ||
115 | #define _TP_EXDATA_VAR0() __tp_data | |
4495dd39 | 116 | #define _TP_EXDATA_VAR1(a) __tp_data |
b728d87e MD |
117 | #define _TP_EXDATA_VAR2(a,b) __tp_data,b |
118 | #define _TP_EXDATA_VAR4(a,b,c,d) __tp_data,b,d | |
119 | #define _TP_EXDATA_VAR6(a,b,c,d,e,f) __tp_data,b,d,f | |
120 | #define _TP_EXDATA_VAR8(a,b,c,d,e,f,g,h) __tp_data,b,d,f,h | |
121 | #define _TP_EXDATA_VAR10(a,b,c,d,e,f,g,h,i,j) __tp_data,b,d,f,h,j | |
122 | #define _TP_EXDATA_VAR12(a,b,c,d,e,f,g,h,i,j,k,l) __tp_data,b,d,f,h,j,l | |
123 | #define _TP_EXDATA_VAR14(a,b,c,d,e,f,g,h,i,j,k,l,m,n) __tp_data,b,d,f,h,j,l,n | |
124 | #define _TP_EXDATA_VAR16(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p) __tp_data,b,d,f,h,j,l,n,p | |
125 | #define _TP_EXDATA_VAR18(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r) __tp_data,b,d,f,h,j,l,n,p,r | |
126 | #define _TP_EXDATA_VAR20(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t) __tp_data,b,d,f,h,j,l,n,p,r,t | |
127 | ||
4495dd39 MD |
128 | /* |
129 | * _TP_EXPROTO* extract tuples of type, var. | |
130 | * _TP_EXPROTO1 and _TP_EXDATA_PROTO1 are needed for -std=c99. | |
131 | */ | |
86637aa6 | 132 | #define _TP_EXPROTO0() void |
4495dd39 | 133 | #define _TP_EXPROTO1(a) void |
b728d87e MD |
134 | #define _TP_EXPROTO2(a,b) a b |
135 | #define _TP_EXPROTO4(a,b,c,d) a b,c d | |
136 | #define _TP_EXPROTO6(a,b,c,d,e,f) a b,c d,e f | |
137 | #define _TP_EXPROTO8(a,b,c,d,e,f,g,h) a b,c d,e f,g h | |
138 | #define _TP_EXPROTO10(a,b,c,d,e,f,g,h,i,j) a b,c d,e f,g h,i j | |
139 | #define _TP_EXPROTO12(a,b,c,d,e,f,g,h,i,j,k,l) a b,c d,e f,g h,i j,k l | |
140 | #define _TP_EXPROTO14(a,b,c,d,e,f,g,h,i,j,k,l,m,n) a b,c d,e f,g h,i j,k l,m n | |
141 | #define _TP_EXPROTO16(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p) a b,c d,e f,g h,i j,k l,m n,o p | |
142 | #define _TP_EXPROTO18(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r) a b,c d,e f,g h,i j,k l,m n,o p,q r | |
143 | #define _TP_EXPROTO20(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t) a b,c d,e f,g h,i j,k l,m n,o p,q r,s t | |
144 | ||
145 | #define _TP_EXDATA_PROTO0() void *__tp_data | |
4495dd39 | 146 | #define _TP_EXDATA_PROTO1(a) void *__tp_data |
b728d87e MD |
147 | #define _TP_EXDATA_PROTO2(a,b) void *__tp_data,a b |
148 | #define _TP_EXDATA_PROTO4(a,b,c,d) void *__tp_data,a b,c d | |
149 | #define _TP_EXDATA_PROTO6(a,b,c,d,e,f) void *__tp_data,a b,c d,e f | |
150 | #define _TP_EXDATA_PROTO8(a,b,c,d,e,f,g,h) void *__tp_data,a b,c d,e f,g h | |
151 | #define _TP_EXDATA_PROTO10(a,b,c,d,e,f,g,h,i,j) void *__tp_data,a b,c d,e f,g h,i j | |
152 | #define _TP_EXDATA_PROTO12(a,b,c,d,e,f,g,h,i,j,k,l) void *__tp_data,a b,c d,e f,g h,i j,k l | |
153 | #define _TP_EXDATA_PROTO14(a,b,c,d,e,f,g,h,i,j,k,l,m,n) void *__tp_data,a b,c d,e f,g h,i j,k l,m n | |
154 | #define _TP_EXDATA_PROTO16(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p) void *__tp_data,a b,c d,e f,g h,i j,k l,m n,o p | |
155 | #define _TP_EXDATA_PROTO18(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r) void *__tp_data,a b,c d,e f,g h,i j,k l,m n,o p,q r | |
156 | #define _TP_EXDATA_PROTO20(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t) void *__tp_data,a b,c d,e f,g h,i j,k l,m n,o p,q r,s t | |
157 | ||
158 | /* Preprocessor trick to count arguments. Inspired from sdt.h. */ | |
159 | #define _TP_NARGS(...) __TP_NARGS(__VA_ARGS__, 20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0) | |
160 | #define __TP_NARGS(_0,_1,_2,_3,_4,_5,_6,_7,_8,_9,_10,_11,_12,_13,_14,_15,_16,_17,_18,_19,_20, N, ...) N | |
23c8854a MD |
161 | #define _TP_PROTO_N(N, ...) _TP_PARAMS(_TP_COMBINE_TOKENS(_TP_EXPROTO, N)(__VA_ARGS__)) |
162 | #define _TP_VAR_N(N, ...) _TP_PARAMS(_TP_COMBINE_TOKENS(_TP_EXVAR, N)(__VA_ARGS__)) | |
163 | #define _TP_DATA_PROTO_N(N, ...) _TP_PARAMS(_TP_COMBINE_TOKENS(_TP_EXDATA_PROTO, N)(__VA_ARGS__)) | |
164 | #define _TP_DATA_VAR_N(N, ...) _TP_PARAMS(_TP_COMBINE_TOKENS(_TP_EXDATA_VAR, N)(__VA_ARGS__)) | |
b728d87e | 165 | #define _TP_ARGS_PROTO(...) _TP_PROTO_N(_TP_NARGS(0, ##__VA_ARGS__), ##__VA_ARGS__) |
23c8854a | 166 | #define _TP_ARGS_VAR(...) _TP_VAR_N(_TP_NARGS(0, ##__VA_ARGS__), ##__VA_ARGS__) |
b728d87e | 167 | #define _TP_ARGS_DATA_PROTO(...) _TP_DATA_PROTO_N(_TP_NARGS(0, ##__VA_ARGS__), ##__VA_ARGS__) |
23c8854a | 168 | #define _TP_ARGS_DATA_VAR(...) _TP_DATA_VAR_N(_TP_NARGS(0, ##__VA_ARGS__), ##__VA_ARGS__) |
b728d87e MD |
169 | #define _TP_PARAMS(...) __VA_ARGS__ |
170 | ||
96f85541 MD |
171 | /* |
172 | * The tracepoint cb is marked always inline so we can distinguish | |
173 | * between caller's ip addresses within the probe using the return | |
174 | * address. | |
175 | */ | |
0f2f7e21 | 176 | #define _DECLARE_TRACEPOINT(_provider, _name, ...) \ |
1a206094 | 177 | extern struct lttng_ust_tracepoint __tracepoint_##_provider##___##_name; \ |
17ca0600 | 178 | static inline __attribute__((always_inline, unused)) lttng_ust_notrace \ |
a8909ba5 | 179 | void __tracepoint_cb_##_provider##___##_name(_TP_ARGS_PROTO(__VA_ARGS__)); \ |
96f85541 | 180 | static \ |
a8909ba5 | 181 | void __tracepoint_cb_##_provider##___##_name(_TP_ARGS_PROTO(__VA_ARGS__)) \ |
b728d87e | 182 | { \ |
10544ee8 | 183 | struct lttng_ust_tracepoint_probe *__tp_probe; \ |
b728d87e | 184 | \ |
d3db6a40 | 185 | if (caa_unlikely(!TP_RCU_LINK_TEST())) \ |
deb6e540 | 186 | return; \ |
10544ee8 MD |
187 | tp_rcu_read_lock(); \ |
188 | __tp_probe = tp_rcu_dereference(__tracepoint_##_provider##___##_name.probes); \ | |
23c8854a | 189 | if (caa_unlikely(!__tp_probe)) \ |
b728d87e MD |
190 | goto end; \ |
191 | do { \ | |
1a206094 | 192 | void (*__tp_cb)(void) = __tp_probe->func; \ |
23c8854a | 193 | void *__tp_data = __tp_probe->data; \ |
b728d87e | 194 | \ |
23c8854a MD |
195 | URCU_FORCE_CAST(void (*)(_TP_ARGS_DATA_PROTO(__VA_ARGS__)), __tp_cb) \ |
196 | (_TP_ARGS_DATA_VAR(__VA_ARGS__)); \ | |
197 | } while ((++__tp_probe)->func); \ | |
b728d87e | 198 | end: \ |
10544ee8 | 199 | tp_rcu_read_unlock(); \ |
b728d87e | 200 | } \ |
a8909ba5 PW |
201 | static inline lttng_ust_notrace \ |
202 | void __tracepoint_register_##_provider##___##_name(char *name, \ | |
203 | void (*func)(void), void *data); \ | |
204 | static inline \ | |
205 | void __tracepoint_register_##_provider##___##_name(char *name, \ | |
206 | void (*func)(void), void *data) \ | |
b728d87e | 207 | { \ |
67e5f391 MD |
208 | __tracepoint_probe_register(name, func, data, \ |
209 | __tracepoint_##_provider##___##_name.signature); \ | |
b728d87e | 210 | } \ |
a8909ba5 PW |
211 | static inline lttng_ust_notrace \ |
212 | void __tracepoint_unregister_##_provider##___##_name(char *name, \ | |
213 | void (*func)(void), void *data); \ | |
214 | static inline \ | |
215 | void __tracepoint_unregister_##_provider##___##_name(char *name, \ | |
216 | void (*func)(void), void *data) \ | |
b728d87e | 217 | { \ |
23c8854a | 218 | __tracepoint_probe_unregister(name, func, data); \ |
b728d87e MD |
219 | } |
220 | ||
fbdeb5ec MD |
221 | extern int __tracepoint_probe_register(const char *name, void (*func)(void), |
222 | void *data, const char *signature); | |
223 | extern int __tracepoint_probe_unregister(const char *name, void (*func)(void), | |
224 | void *data); | |
deb6e540 | 225 | |
51920067 MD |
226 | /* |
227 | * tracepoint dynamic linkage handling (callbacks). Hidden visibility: | |
228 | * shared across objects in a module/main executable. | |
229 | */ | |
1a206094 | 230 | struct lttng_ust_tracepoint_dlopen { |
51920067 MD |
231 | void *liblttngust_handle; |
232 | ||
1a206094 | 233 | int (*tracepoint_register_lib)(struct lttng_ust_tracepoint * const *tracepoints_start, |
51920067 | 234 | int tracepoints_count); |
1a206094 | 235 | int (*tracepoint_unregister_lib)(struct lttng_ust_tracepoint * const *tracepoints_start); |
10544ee8 MD |
236 | void (*rcu_read_lock_sym)(void); |
237 | void (*rcu_read_unlock_sym)(void); | |
238 | void *(*rcu_dereference_sym)(void *p); | |
51920067 MD |
239 | }; |
240 | ||
1a206094 | 241 | extern struct lttng_ust_tracepoint_dlopen tracepoint_dlopen; |
f4624de2 | 242 | extern struct lttng_ust_tracepoint_dlopen *tracepoint_dlopen_ptr; |
51920067 | 243 | |
46c881a7 MD |
244 | /* |
245 | * These weak symbols, the constructor, and destructor take care of | |
246 | * registering only _one_ instance of the tracepoints per shared-ojbect | |
247 | * (or for the whole main program). | |
248 | */ | |
249 | int __tracepoint_registered | |
250 | __attribute__((weak, visibility("hidden"))); | |
251 | int __tracepoint_ptrs_registered | |
252 | __attribute__((weak, visibility("hidden"))); | |
1a206094 | 253 | struct lttng_ust_tracepoint_dlopen tracepoint_dlopen |
46c881a7 | 254 | __attribute__((weak, visibility("hidden"))); |
9443a022 MD |
255 | /* |
256 | * Deal with gcc O1 optimisation issues with weak hidden symbols. gcc | |
257 | * 4.8 and prior does not have the same behavior for symbol scoping on | |
258 | * 32-bit powerpc depending on the object size: symbols for objects of 8 | |
259 | * bytes or less have the same address throughout a module, whereas they | |
260 | * have different addresses between compile units for objects larger | |
261 | * than 8 bytes. Add this pointer indirection to ensure that the symbol | |
262 | * scoping match that of the other weak hidden symbols found in this | |
263 | * header. | |
264 | */ | |
265 | struct lttng_ust_tracepoint_dlopen *tracepoint_dlopen_ptr | |
266 | __attribute__((weak, visibility("hidden"))); | |
46c881a7 | 267 | |
0fd0de10 FD |
268 | /* |
269 | * Tracepoint dynamic linkage handling (callbacks). Hidden visibility: shared | |
270 | * across objects in a module/main executable. The callbacks are used to | |
271 | * control and check if the destructors should be executed. | |
272 | */ | |
273 | struct lttng_ust_tracepoint_destructors_syms { | |
0fd0de10 FD |
274 | void (*tracepoint_disable_destructors)(void); |
275 | int (*tracepoint_get_destructors_state)(void); | |
276 | }; | |
277 | ||
278 | extern struct lttng_ust_tracepoint_destructors_syms tracepoint_destructors_syms; | |
279 | extern struct lttng_ust_tracepoint_destructors_syms *tracepoint_destructors_syms_ptr; | |
280 | ||
281 | struct lttng_ust_tracepoint_destructors_syms tracepoint_destructors_syms | |
282 | __attribute__((weak, visibility("hidden"))); | |
283 | struct lttng_ust_tracepoint_destructors_syms *tracepoint_destructors_syms_ptr | |
284 | __attribute__((weak, visibility("hidden"))); | |
285 | ||
286 | static inline void tracepoint_disable_destructors(void) | |
287 | { | |
288 | if (!tracepoint_dlopen_ptr) | |
289 | tracepoint_dlopen_ptr = &tracepoint_dlopen; | |
290 | if (!tracepoint_destructors_syms_ptr) | |
291 | tracepoint_destructors_syms_ptr = &tracepoint_destructors_syms; | |
292 | if (tracepoint_dlopen_ptr->liblttngust_handle | |
293 | && tracepoint_destructors_syms_ptr->tracepoint_disable_destructors) | |
294 | tracepoint_destructors_syms_ptr->tracepoint_disable_destructors(); | |
0fd0de10 FD |
295 | } |
296 | ||
99234da6 MD |
297 | #ifndef _LGPL_SOURCE |
298 | static inline void lttng_ust_notrace | |
299 | __tracepoint__init_urcu_sym(void); | |
300 | static inline void | |
301 | __tracepoint__init_urcu_sym(void) | |
302 | { | |
9443a022 MD |
303 | if (!tracepoint_dlopen_ptr) |
304 | tracepoint_dlopen_ptr = &tracepoint_dlopen; | |
99234da6 MD |
305 | /* |
306 | * Symbols below are needed by tracepoint call sites and probe | |
307 | * providers. | |
308 | */ | |
10544ee8 MD |
309 | if (!tracepoint_dlopen_ptr->rcu_read_lock_sym) |
310 | tracepoint_dlopen_ptr->rcu_read_lock_sym = | |
99234da6 | 311 | URCU_FORCE_CAST(void (*)(void), |
9443a022 | 312 | dlsym(tracepoint_dlopen_ptr->liblttngust_handle, |
10544ee8 MD |
313 | "tp_rcu_read_lock")); |
314 | if (!tracepoint_dlopen_ptr->rcu_read_unlock_sym) | |
315 | tracepoint_dlopen_ptr->rcu_read_unlock_sym = | |
99234da6 | 316 | URCU_FORCE_CAST(void (*)(void), |
9443a022 | 317 | dlsym(tracepoint_dlopen_ptr->liblttngust_handle, |
10544ee8 MD |
318 | "tp_rcu_read_unlock")); |
319 | if (!tracepoint_dlopen_ptr->rcu_dereference_sym) | |
320 | tracepoint_dlopen_ptr->rcu_dereference_sym = | |
99234da6 | 321 | URCU_FORCE_CAST(void *(*)(void *p), |
9443a022 | 322 | dlsym(tracepoint_dlopen_ptr->liblttngust_handle, |
10544ee8 | 323 | "tp_rcu_dereference_sym")); |
99234da6 MD |
324 | } |
325 | #else | |
326 | static inline void lttng_ust_notrace | |
327 | __tracepoint__init_urcu_sym(void); | |
328 | static inline void | |
329 | __tracepoint__init_urcu_sym(void) | |
330 | { | |
331 | } | |
332 | #endif | |
333 | ||
46c881a7 MD |
334 | static void lttng_ust_notrace __attribute__((constructor)) |
335 | __tracepoints__init(void); | |
336 | static void | |
337 | __tracepoints__init(void) | |
338 | { | |
8f0d1c78 MD |
339 | if (__tracepoint_registered++) { |
340 | if (!tracepoint_dlopen_ptr->liblttngust_handle) | |
341 | return; | |
342 | __tracepoint__init_urcu_sym(); | |
46c881a7 | 343 | return; |
8f0d1c78 | 344 | } |
46c881a7 | 345 | |
9443a022 MD |
346 | if (!tracepoint_dlopen_ptr) |
347 | tracepoint_dlopen_ptr = &tracepoint_dlopen; | |
348 | if (!tracepoint_dlopen_ptr->liblttngust_handle) | |
349 | tracepoint_dlopen_ptr->liblttngust_handle = | |
05e8ff1f | 350 | dlopen("liblttng-ust-tracepoint.so.1", RTLD_NOW | RTLD_GLOBAL); |
9443a022 | 351 | if (!tracepoint_dlopen_ptr->liblttngust_handle) |
46c881a7 | 352 | return; |
99234da6 | 353 | __tracepoint__init_urcu_sym(); |
46c881a7 MD |
354 | } |
355 | ||
356 | static void lttng_ust_notrace __attribute__((destructor)) | |
357 | __tracepoints__destroy(void); | |
358 | static void | |
359 | __tracepoints__destroy(void) | |
360 | { | |
361 | int ret; | |
362 | ||
363 | if (--__tracepoint_registered) | |
364 | return; | |
9443a022 MD |
365 | if (!tracepoint_dlopen_ptr) |
366 | tracepoint_dlopen_ptr = &tracepoint_dlopen; | |
0fd0de10 FD |
367 | if (!tracepoint_destructors_syms_ptr) |
368 | tracepoint_destructors_syms_ptr = &tracepoint_destructors_syms; | |
369 | if (!tracepoint_dlopen_ptr->liblttngust_handle) | |
370 | return; | |
371 | if (__tracepoint_ptrs_registered) | |
372 | return; | |
373 | /* | |
374 | * Lookup if destructors must be executed using the new method. | |
375 | */ | |
376 | if (tracepoint_destructors_syms_ptr->tracepoint_get_destructors_state | |
377 | && !tracepoint_destructors_syms_ptr->tracepoint_get_destructors_state()) { | |
378 | /* | |
379 | * The tracepoint_get_destructors_state symbol was found with | |
380 | * dlsym but its returned value is 0 meaning that destructors | |
381 | * must not be executed. | |
382 | */ | |
383 | return; | |
384 | } | |
0fd0de10 FD |
385 | ret = dlclose(tracepoint_dlopen_ptr->liblttngust_handle); |
386 | if (ret) { | |
387 | fprintf(stderr, "Error (%d) in dlclose\n", ret); | |
388 | abort(); | |
389 | } | |
390 | memset(tracepoint_dlopen_ptr, 0, sizeof(*tracepoint_dlopen_ptr)); | |
46c881a7 MD |
391 | } |
392 | ||
deb6e540 MD |
393 | #ifdef TRACEPOINT_DEFINE |
394 | ||
558b9d86 MD |
395 | /* |
396 | * These weak symbols, the constructor, and destructor take care of | |
397 | * registering only _one_ instance of the tracepoints per shared-ojbect | |
398 | * (or for the whole main program). | |
399 | */ | |
1a206094 | 400 | extern struct lttng_ust_tracepoint * const __start___tracepoints_ptrs[] |
558b9d86 | 401 | __attribute__((weak, visibility("hidden"))); |
1a206094 | 402 | extern struct lttng_ust_tracepoint * const __stop___tracepoints_ptrs[] |
558b9d86 MD |
403 | __attribute__((weak, visibility("hidden"))); |
404 | ||
628e1d81 MD |
405 | /* |
406 | * When TRACEPOINT_PROBE_DYNAMIC_LINKAGE is defined, we do not emit a | |
407 | * unresolved symbol that requires the provider to be linked in. When | |
408 | * TRACEPOINT_PROBE_DYNAMIC_LINKAGE is not defined, we emit an | |
409 | * unresolved symbol that depends on having the provider linked in, | |
410 | * otherwise the linker complains. This deals with use of static | |
411 | * libraries, ensuring that the linker does not remove the provider | |
412 | * object from the executable. | |
413 | */ | |
414 | #ifdef TRACEPOINT_PROBE_DYNAMIC_LINKAGE | |
b4f3bc52 | 415 | #define _TRACEPOINT_UNDEFINED_REF(provider) NULL |
628e1d81 | 416 | #else /* TRACEPOINT_PROBE_DYNAMIC_LINKAGE */ |
b4f3bc52 | 417 | #define _TRACEPOINT_UNDEFINED_REF(provider) &__tracepoint_provider_##provider |
628e1d81 MD |
418 | #endif /* TRACEPOINT_PROBE_DYNAMIC_LINKAGE */ |
419 | ||
b728d87e MD |
420 | /* |
421 | * Note: to allow PIC code, we need to allow the linker to update the pointers | |
422 | * in the __tracepoints_ptrs section. | |
423 | * Therefore, this section is _not_ const (read-only). | |
424 | */ | |
b4f3bc52 MD |
425 | #define _TP_EXTRACT_STRING(...) #__VA_ARGS__ |
426 | ||
427 | #define _DEFINE_TRACEPOINT(_provider, _name, _args) \ | |
428 | extern int __tracepoint_provider_##_provider; \ | |
429 | static const char __tp_strtab_##_provider##___##_name[] \ | |
b728d87e | 430 | __attribute__((section("__tracepoints_strings"))) = \ |
b4f3bc52 | 431 | #_provider ":" #_name; \ |
1a206094 | 432 | struct lttng_ust_tracepoint __tracepoint_##_provider##___##_name \ |
b728d87e | 433 | __attribute__((section("__tracepoints"))) = \ |
b4f3bc52 MD |
434 | { \ |
435 | __tp_strtab_##_provider##___##_name, \ | |
436 | 0, \ | |
437 | NULL, \ | |
438 | _TRACEPOINT_UNDEFINED_REF(_provider), \ | |
439 | _TP_EXTRACT_STRING(_args), \ | |
10e594aa | 440 | { }, \ |
b4f3bc52 | 441 | }; \ |
1a206094 SM |
442 | static struct lttng_ust_tracepoint * \ |
443 | __tracepoint_ptr_##_provider##___##_name \ | |
4f74bc5e MD |
444 | __attribute__((section("__tracepoints_ptrs"), used)) \ |
445 | __lttng_ust_variable_attribute_no_sanitize_address = \ | |
b4f3bc52 | 446 | &__tracepoint_##_provider##___##_name; |
b728d87e | 447 | |
a8909ba5 | 448 | static void lttng_ust_notrace __attribute__((constructor)) |
46c881a7 | 449 | __tracepoints__ptrs_init(void); |
a8909ba5 | 450 | static void |
46c881a7 | 451 | __tracepoints__ptrs_init(void) |
b728d87e | 452 | { |
46c881a7 | 453 | if (__tracepoint_ptrs_registered++) |
b728d87e | 454 | return; |
9443a022 MD |
455 | if (!tracepoint_dlopen_ptr) |
456 | tracepoint_dlopen_ptr = &tracepoint_dlopen; | |
457 | if (!tracepoint_dlopen_ptr->liblttngust_handle) | |
458 | tracepoint_dlopen_ptr->liblttngust_handle = | |
05e8ff1f | 459 | dlopen("liblttng-ust-tracepoint.so.1", RTLD_NOW | RTLD_GLOBAL); |
9443a022 | 460 | if (!tracepoint_dlopen_ptr->liblttngust_handle) |
deb6e540 | 461 | return; |
0fd0de10 FD |
462 | if (!tracepoint_destructors_syms_ptr) |
463 | tracepoint_destructors_syms_ptr = &tracepoint_destructors_syms; | |
9443a022 | 464 | tracepoint_dlopen_ptr->tracepoint_register_lib = |
1a206094 | 465 | URCU_FORCE_CAST(int (*)(struct lttng_ust_tracepoint * const *, int), |
9443a022 | 466 | dlsym(tracepoint_dlopen_ptr->liblttngust_handle, |
ae14f822 | 467 | "tracepoint_register_lib")); |
9443a022 | 468 | tracepoint_dlopen_ptr->tracepoint_unregister_lib = |
1a206094 | 469 | URCU_FORCE_CAST(int (*)(struct lttng_ust_tracepoint * const *), |
9443a022 | 470 | dlsym(tracepoint_dlopen_ptr->liblttngust_handle, |
ae14f822 | 471 | "tracepoint_unregister_lib")); |
0fd0de10 FD |
472 | tracepoint_destructors_syms_ptr->tracepoint_disable_destructors = |
473 | URCU_FORCE_CAST(void (*)(void), | |
474 | dlsym(tracepoint_dlopen_ptr->liblttngust_handle, | |
475 | "tp_disable_destructors")); | |
476 | tracepoint_destructors_syms_ptr->tracepoint_get_destructors_state = | |
477 | URCU_FORCE_CAST(int (*)(void), | |
478 | dlsym(tracepoint_dlopen_ptr->liblttngust_handle, | |
479 | "tp_get_destructors_state")); | |
99234da6 | 480 | __tracepoint__init_urcu_sym(); |
9443a022 MD |
481 | if (tracepoint_dlopen_ptr->tracepoint_register_lib) { |
482 | tracepoint_dlopen_ptr->tracepoint_register_lib(__start___tracepoints_ptrs, | |
46c881a7 MD |
483 | __stop___tracepoints_ptrs - |
484 | __start___tracepoints_ptrs); | |
99234da6 | 485 | } |
b728d87e MD |
486 | } |
487 | ||
a8909ba5 | 488 | static void lttng_ust_notrace __attribute__((destructor)) |
46c881a7 | 489 | __tracepoints__ptrs_destroy(void); |
a8909ba5 | 490 | static void |
46c881a7 | 491 | __tracepoints__ptrs_destroy(void) |
b728d87e | 492 | { |
deb6e540 | 493 | int ret; |
51920067 | 494 | |
46c881a7 | 495 | if (--__tracepoint_ptrs_registered) |
b728d87e | 496 | return; |
9443a022 MD |
497 | if (!tracepoint_dlopen_ptr) |
498 | tracepoint_dlopen_ptr = &tracepoint_dlopen; | |
0fd0de10 FD |
499 | if (!tracepoint_destructors_syms_ptr) |
500 | tracepoint_destructors_syms_ptr = &tracepoint_destructors_syms; | |
9443a022 MD |
501 | if (tracepoint_dlopen_ptr->tracepoint_unregister_lib) |
502 | tracepoint_dlopen_ptr->tracepoint_unregister_lib(__start___tracepoints_ptrs); | |
0fd0de10 FD |
503 | if (tracepoint_dlopen_ptr->liblttngust_handle |
504 | && tracepoint_destructors_syms_ptr->tracepoint_get_destructors_state | |
505 | && tracepoint_destructors_syms_ptr->tracepoint_get_destructors_state() | |
664ccf24 | 506 | && !__tracepoint_ptrs_registered) { |
9443a022 | 507 | ret = dlclose(tracepoint_dlopen_ptr->liblttngust_handle); |
76aca78d MD |
508 | if (ret) { |
509 | fprintf(stderr, "Error (%d) in dlclose\n", ret); | |
510 | abort(); | |
511 | } | |
9443a022 | 512 | memset(tracepoint_dlopen_ptr, 0, sizeof(*tracepoint_dlopen_ptr)); |
deb6e540 | 513 | } |
b728d87e MD |
514 | } |
515 | ||
46c881a7 MD |
516 | #else /* TRACEPOINT_DEFINE */ |
517 | ||
518 | #define _DEFINE_TRACEPOINT(_provider, _name, _args) | |
519 | ||
520 | #endif /* #else TRACEPOINT_DEFINE */ | |
deb6e540 | 521 | |
b728d87e MD |
522 | #ifdef __cplusplus |
523 | } | |
524 | #endif | |
525 | ||
526 | #endif /* _LTTNG_TRACEPOINT_H */ | |
527 | ||
528 | /* The following declarations must be outside re-inclusion protection. */ | |
529 | ||
c785c634 MD |
530 | #ifndef TRACEPOINT_ENUM |
531 | ||
532 | /* | |
533 | * Tracepoint Enumerations | |
534 | * | |
535 | * The enumeration is a mapping between an integer, or range of integers, and | |
536 | * a string. It can be used to have a more compact trace in cases where the | |
537 | * possible values for a field are limited: | |
538 | * | |
539 | * An example: | |
540 | * | |
541 | * TRACEPOINT_ENUM(someproject_component, enumname, | |
542 | * TP_ENUM_VALUES( | |
543 | * ctf_enum_value("even", 0) | |
544 | * ctf_enum_value("uneven", 1) | |
545 | * ctf_enum_range("twoto4", 2, 4) | |
546 | * ctf_enum_value("five", 5) | |
547 | * ) | |
548 | * ) | |
549 | * | |
550 | * Where "someproject_component" is the name of the component this enumeration | |
551 | * belongs to and "enumname" identifies this enumeration. Inside the | |
552 | * TP_ENUM_VALUES macro is the actual mapping. Each string value can map | |
553 | * to either a single value with ctf_enum_value or a range of values | |
554 | * with ctf_enum_range. | |
555 | * | |
556 | * Enumeration ranges may overlap, but the behavior is implementation-defined, | |
557 | * each trace reader will handle overlapping as it wishes. | |
558 | * | |
559 | * That enumeration can then be used in a field inside the TP_FIELD macro using | |
560 | * the following line: | |
561 | * | |
562 | * ctf_enum(someproject_component, enumname, enumtype, enumfield, enumval) | |
563 | * | |
564 | * Where "someproject_component" and "enumname" match those in the | |
565 | * TRACEPOINT_ENUM, "enumtype" is a signed or unsigned integer type | |
566 | * backing the enumeration, "enumfield" is the name of the field and | |
567 | * "enumval" is the value. | |
568 | */ | |
569 | ||
570 | #define TRACEPOINT_ENUM(provider, name, values) | |
571 | ||
572 | #endif /* #ifndef TRACEPOINT_ENUM */ | |
573 | ||
b728d87e MD |
574 | #ifndef TRACEPOINT_EVENT |
575 | ||
576 | /* | |
577 | * How to use the TRACEPOINT_EVENT macro: | |
578 | * | |
579 | * An example: | |
a60af3a5 | 580 | * |
b728d87e MD |
581 | * TRACEPOINT_EVENT(someproject_component, event_name, |
582 | * | |
583 | * * TP_ARGS takes from 0 to 10 "type, field_name" pairs * | |
584 | * | |
585 | * TP_ARGS(int, arg0, void *, arg1, char *, string, size_t, strlen, | |
586 | * long *, arg4, size_t, arg4_len), | |
587 | * | |
588 | * * TP_FIELDS describes the event payload layout in the trace * | |
589 | * | |
590 | * TP_FIELDS( | |
a60af3a5 | 591 | * * Integer, printed in base 10 * |
b728d87e MD |
592 | * ctf_integer(int, field_a, arg0) |
593 | * | |
a60af3a5 | 594 | * * Integer, printed with 0x base 16 * |
b728d87e MD |
595 | * ctf_integer_hex(unsigned long, field_d, arg1) |
596 | * | |
c785c634 MD |
597 | * * Enumeration * |
598 | * ctf_enum(someproject_component, enum_name, int, field_e, arg0) | |
599 | * | |
a60af3a5 | 600 | * * Array Sequence, printed as UTF8-encoded array of bytes * |
b728d87e MD |
601 | * ctf_array_text(char, field_b, string, FIXED_LEN) |
602 | * ctf_sequence_text(char, field_c, string, size_t, strlen) | |
603 | * | |
a60af3a5 | 604 | * * String, printed as UTF8-encoded string * |
b728d87e MD |
605 | * ctf_string(field_e, string) |
606 | * | |
a60af3a5 | 607 | * * Array sequence of signed integer values * |
b728d87e MD |
608 | * ctf_array(long, field_f, arg4, FIXED_LEN4) |
609 | * ctf_sequence(long, field_g, arg4, size_t, arg4_len) | |
610 | * ) | |
611 | * ) | |
612 | * | |
613 | * More detailed explanation: | |
614 | * | |
615 | * The name of the tracepoint is expressed as a tuple with the provider | |
616 | * and name arguments. | |
617 | * | |
618 | * The provider and name should be a proper C99 identifier. | |
619 | * The "provider" and "name" MUST follow these rules to ensure no | |
620 | * namespace clash occurs: | |
621 | * | |
622 | * For projects (applications and libraries) for which an entity | |
623 | * specific to the project controls the source code and thus its | |
624 | * tracepoints (typically with a scope larger than a single company): | |
625 | * | |
626 | * either: | |
627 | * project_component, event | |
628 | * or: | |
629 | * project, event | |
630 | * | |
631 | * Where "project" is the name of the project, | |
632 | * "component" is the name of the project component (which may | |
633 | * include several levels of sub-components, e.g. | |
634 | * ...component_subcomponent_...) where the tracepoint is located | |
635 | * (optional), | |
636 | * "event" is the name of the tracepoint event. | |
637 | * | |
638 | * For projects issued from a single company wishing to advertise that | |
639 | * the company controls the source code and thus the tracepoints, the | |
640 | * "com_" prefix should be used: | |
641 | * | |
642 | * either: | |
643 | * com_company_project_component, event | |
644 | * or: | |
645 | * com_company_project, event | |
646 | * | |
647 | * Where "company" is the name of the company, | |
648 | * "project" is the name of the project, | |
649 | * "component" is the name of the project component (which may | |
650 | * include several levels of sub-components, e.g. | |
651 | * ...component_subcomponent_...) where the tracepoint is located | |
652 | * (optional), | |
653 | * "event" is the name of the tracepoint event. | |
654 | * | |
655 | * the provider:event identifier is limited to 127 characters. | |
656 | */ | |
657 | ||
b728d87e | 658 | #define TRACEPOINT_EVENT(provider, name, args, fields) \ |
deb6e540 | 659 | _DECLARE_TRACEPOINT(provider, name, _TP_PARAMS(args)) \ |
b4f3bc52 | 660 | _DEFINE_TRACEPOINT(provider, name, _TP_PARAMS(args)) |
b728d87e MD |
661 | |
662 | #define TRACEPOINT_EVENT_CLASS(provider, name, args, fields) | |
663 | ||
664 | #define TRACEPOINT_EVENT_INSTANCE(provider, _template, name, args) \ | |
deb6e540 | 665 | _DECLARE_TRACEPOINT(provider, name, _TP_PARAMS(args)) \ |
b4f3bc52 | 666 | _DEFINE_TRACEPOINT(provider, name, _TP_PARAMS(args)) |
b728d87e MD |
667 | |
668 | #endif /* #ifndef TRACEPOINT_EVENT */ | |
669 | ||
670 | #ifndef TRACEPOINT_LOGLEVEL | |
671 | ||
672 | /* | |
75c5ad79 | 673 | * Tracepoint Loglevels |
b728d87e MD |
674 | * |
675 | * Typical use of these loglevels: | |
676 | * | |
d8de1354 | 677 | * The loglevels go from 0 to 14. Higher numbers imply the most |
75c5ad79 MD |
678 | * verbosity (higher event throughput expected. |
679 | * | |
d8de1354 MD |
680 | * Loglevels 0 through 6, and loglevel 14, match syslog(3) loglevels |
681 | * semantic. Loglevels 7 through 13 offer more fine-grained selection of | |
682 | * debug information. | |
75c5ad79 | 683 | * |
d8de1354 | 684 | * TRACE_EMERG 0 |
75c5ad79 MD |
685 | * system is unusable |
686 | * | |
d8de1354 | 687 | * TRACE_ALERT 1 |
75c5ad79 MD |
688 | * action must be taken immediately |
689 | * | |
d8de1354 | 690 | * TRACE_CRIT 2 |
75c5ad79 MD |
691 | * critical conditions |
692 | * | |
d8de1354 | 693 | * TRACE_ERR 3 |
75c5ad79 MD |
694 | * error conditions |
695 | * | |
d8de1354 | 696 | * TRACE_WARNING 4 |
75c5ad79 MD |
697 | * warning conditions |
698 | * | |
d8de1354 | 699 | * TRACE_NOTICE 5 |
75c5ad79 MD |
700 | * normal, but significant, condition |
701 | * | |
d8de1354 | 702 | * TRACE_INFO 6 |
75c5ad79 MD |
703 | * informational message |
704 | * | |
d8de1354 MD |
705 | * TRACE_DEBUG_SYSTEM 7 |
706 | * debug information with system-level scope (set of programs) | |
75c5ad79 | 707 | * |
d8de1354 MD |
708 | * TRACE_DEBUG_PROGRAM 8 |
709 | * debug information with program-level scope (set of processes) | |
75c5ad79 | 710 | * |
d8de1354 MD |
711 | * TRACE_DEBUG_PROCESS 9 |
712 | * debug information with process-level scope (set of modules) | |
75c5ad79 | 713 | * |
d8de1354 MD |
714 | * TRACE_DEBUG_MODULE 10 |
715 | * debug information with module (executable/library) scope (set of units) | |
75c5ad79 | 716 | * |
d8de1354 MD |
717 | * TRACE_DEBUG_UNIT 11 |
718 | * debug information with compilation unit scope (set of functions) | |
75c5ad79 | 719 | * |
d8de1354 MD |
720 | * TRACE_DEBUG_FUNCTION 12 |
721 | * debug information with function-level scope | |
75c5ad79 | 722 | * |
d8de1354 MD |
723 | * TRACE_DEBUG_LINE 13 |
724 | * debug information with line-level scope (TRACEPOINT_EVENT default) | |
902e1379 | 725 | * |
d8de1354 | 726 | * TRACE_DEBUG 14 |
1e3b0059 | 727 | * debug-level message |
75c5ad79 MD |
728 | * |
729 | * Declare tracepoint loglevels for tracepoints. A TRACEPOINT_EVENT | |
730 | * should be declared prior to the the TRACEPOINT_LOGLEVEL for a given | |
853cda88 MD |
731 | * tracepoint name. The first field is the provider name, the second |
732 | * field is the name of the tracepoint, the third field is the loglevel | |
733 | * name. | |
b728d87e MD |
734 | * |
735 | * TRACEPOINT_LOGLEVEL(< [com_company_]project[_component] >, < event >, | |
736 | * < loglevel_name >) | |
737 | * | |
75c5ad79 MD |
738 | * The TRACEPOINT_PROVIDER must be already declared before declaring a |
739 | * TRACEPOINT_LOGLEVEL. | |
b728d87e MD |
740 | */ |
741 | ||
882a56d7 | 742 | enum { |
d8de1354 MD |
743 | TRACE_EMERG = 0, |
744 | TRACE_ALERT = 1, | |
745 | TRACE_CRIT = 2, | |
746 | TRACE_ERR = 3, | |
747 | TRACE_WARNING = 4, | |
748 | TRACE_NOTICE = 5, | |
749 | TRACE_INFO = 6, | |
750 | TRACE_DEBUG_SYSTEM = 7, | |
751 | TRACE_DEBUG_PROGRAM = 8, | |
752 | TRACE_DEBUG_PROCESS = 9, | |
753 | TRACE_DEBUG_MODULE = 10, | |
754 | TRACE_DEBUG_UNIT = 11, | |
755 | TRACE_DEBUG_FUNCTION = 12, | |
756 | TRACE_DEBUG_LINE = 13, | |
757 | TRACE_DEBUG = 14, | |
882a56d7 MD |
758 | }; |
759 | ||
05ceaafd | 760 | #define TRACEPOINT_LOGLEVEL(provider, name, loglevel) |
b728d87e MD |
761 | |
762 | #endif /* #ifndef TRACEPOINT_LOGLEVEL */ | |
6ddc916d MD |
763 | |
764 | #ifndef TRACEPOINT_MODEL_EMF_URI | |
765 | ||
766 | #define TRACEPOINT_MODEL_EMF_URI(provider, name, uri) | |
767 | ||
768 | #endif /* #ifndef TRACEPOINT_MODEL_EMF_URI */ |