2 * SPDX-License-Identifier: MIT
4 * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
7 #ifndef _LTTNG_UST_TRACEPOINT_H
8 #define _LTTNG_UST_TRACEPOINT_H
12 #include <lttng/tracepoint-types.h>
13 #include <lttng/tracepoint-rcu.h>
14 #include <urcu/compiler.h>
15 #include <urcu/system.h>
16 #include <dlfcn.h> /* for dlopen */
17 #include <string.h> /* for memset */
19 #include <lttng/ust-config.h> /* for sdt */
20 #include <lttng/ust-compiler.h>
21 #include <lttng/ust-tracer.h>
22 #include <lttng/ust-api-compat.h>
24 #define LTTNG_UST_TRACEPOINT_NAME_LEN_MAX 256
26 #ifdef LTTNG_UST_HAVE_SDT_INTEGRATION
28 * Instead of using SDT_USE_VARIADIC from 'sys/sdt.h', use our own namespaced
29 * macros since the instrumented application might already have included
30 * 'sys/sdt.h' without variadic support.
34 #define LTTNG_UST__SDT_NARG(...) \
35 LTTNG_UST___SDT_NARG(__VA_ARGS__, 12,11,10,9,8,7,6,5,4,3,2,1,0)
37 #define LTTNG_UST___SDT_NARG(_0,_1,_2,_3,_4,_5,_6,_7,_8,_9,_10,_11,_12, N, ...) N
39 #define LTTNG_UST__SDT_PROBE_N(provider, name, N, ...) \
40 _SDT_PROBE(provider, name, N, (__VA_ARGS__))
42 #define LTTNG_UST_STAP_PROBEV(provider, name, ...) \
43 LTTNG_UST__SDT_PROBE_N(provider, name, LTTNG_UST__SDT_NARG(0, ##__VA_ARGS__), ##__VA_ARGS__)
46 #define LTTNG_UST_STAP_PROBEV(...)
53 #define lttng_ust_tracepoint_enabled(provider, name) \
54 caa_unlikely(CMM_LOAD_SHARED(lttng_ust_tracepoint_##provider##___##name.state))
56 #define lttng_ust_do_tracepoint(provider, name, ...) \
57 lttng_ust_tracepoint_cb_##provider##___##name(__VA_ARGS__)
59 #define lttng_ust_tracepoint(provider, name, ...) \
61 LTTNG_UST_STAP_PROBEV(provider, name, ## __VA_ARGS__); \
62 if (lttng_ust_tracepoint_enabled(provider, name)) \
63 lttng_ust_do_tracepoint(provider, name, __VA_ARGS__); \
66 #define LTTNG_UST_TP_ARGS(...) __VA_ARGS__
69 * LTTNG_UST_TP_ARGS takes tuples of type, argument separated by a comma.
70 * It can take up to 10 tuples (which means that less than 10 tuples is
72 * Each tuple is also separated by a comma.
74 #define LTTNG_UST___TP_COMBINE_TOKENS(_tokena, _tokenb) \
76 #define LTTNG_UST__TP_COMBINE_TOKENS(_tokena, _tokenb) \
77 LTTNG_UST___TP_COMBINE_TOKENS(_tokena, _tokenb)
78 #define LTTNG_UST___TP_COMBINE_TOKENS3(_tokena, _tokenb, _tokenc) \
79 _tokena##_tokenb##_tokenc
80 #define LTTNG_UST__TP_COMBINE_TOKENS3(_tokena, _tokenb, _tokenc) \
81 LTTNG_UST___TP_COMBINE_TOKENS3(_tokena, _tokenb, _tokenc)
82 #define LTTNG_UST___TP_COMBINE_TOKENS4(_tokena, _tokenb, _tokenc, _tokend) \
83 _tokena##_tokenb##_tokenc##_tokend
84 #define LTTNG_UST__TP_COMBINE_TOKENS4(_tokena, _tokenb, _tokenc, _tokend) \
85 LTTNG_UST___TP_COMBINE_TOKENS4(_tokena, _tokenb, _tokenc, _tokend)
88 * LTTNG_UST__TP_EXVAR* extract the var names.
89 * LTTNG_UST__TP_EXVAR1 and LTTNG_UST__TP_EXDATA_VAR1 are needed for -std=c99.
91 #define LTTNG_UST__TP_EXVAR0()
92 #define LTTNG_UST__TP_EXVAR1(a)
93 #define LTTNG_UST__TP_EXVAR2(a,b) b
94 #define LTTNG_UST__TP_EXVAR4(a,b,c,d) b,d
95 #define LTTNG_UST__TP_EXVAR6(a,b,c,d,e,f) b,d,f
96 #define LTTNG_UST__TP_EXVAR8(a,b,c,d,e,f,g,h) b,d,f,h
97 #define LTTNG_UST__TP_EXVAR10(a,b,c,d,e,f,g,h,i,j) b,d,f,h,j
98 #define LTTNG_UST__TP_EXVAR12(a,b,c,d,e,f,g,h,i,j,k,l) b,d,f,h,j,l
99 #define LTTNG_UST__TP_EXVAR14(a,b,c,d,e,f,g,h,i,j,k,l,m,n) b,d,f,h,j,l,n
100 #define LTTNG_UST__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
101 #define LTTNG_UST__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
102 #define LTTNG_UST__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
104 #define LTTNG_UST__TP_EXDATA_VAR0() __tp_data
105 #define LTTNG_UST__TP_EXDATA_VAR1(a) __tp_data
106 #define LTTNG_UST__TP_EXDATA_VAR2(a,b) __tp_data,b
107 #define LTTNG_UST__TP_EXDATA_VAR4(a,b,c,d) __tp_data,b,d
108 #define LTTNG_UST__TP_EXDATA_VAR6(a,b,c,d,e,f) __tp_data,b,d,f
109 #define LTTNG_UST__TP_EXDATA_VAR8(a,b,c,d,e,f,g,h) __tp_data,b,d,f,h
110 #define LTTNG_UST__TP_EXDATA_VAR10(a,b,c,d,e,f,g,h,i,j) __tp_data,b,d,f,h,j
111 #define LTTNG_UST__TP_EXDATA_VAR12(a,b,c,d,e,f,g,h,i,j,k,l) __tp_data,b,d,f,h,j,l
112 #define LTTNG_UST__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
113 #define LTTNG_UST__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
114 #define LTTNG_UST__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
115 #define LTTNG_UST__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
118 * LTTNG_UST__TP_EXPROTO* extract tuples of type, var.
119 * LTTNG_UST__TP_EXPROTO1 and LTTNG_UST__TP_EXDATA_PROTO1 are needed for -std=c99.
121 #define LTTNG_UST__TP_EXPROTO0() void
122 #define LTTNG_UST__TP_EXPROTO1(a) void
123 #define LTTNG_UST__TP_EXPROTO2(a,b) a b
124 #define LTTNG_UST__TP_EXPROTO4(a,b,c,d) a b,c d
125 #define LTTNG_UST__TP_EXPROTO6(a,b,c,d,e,f) a b,c d,e f
126 #define LTTNG_UST__TP_EXPROTO8(a,b,c,d,e,f,g,h) a b,c d,e f,g h
127 #define LTTNG_UST__TP_EXPROTO10(a,b,c,d,e,f,g,h,i,j) a b,c d,e f,g h,i j
128 #define LTTNG_UST__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
129 #define LTTNG_UST__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
130 #define LTTNG_UST__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
131 #define LTTNG_UST__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
132 #define LTTNG_UST__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
134 #define LTTNG_UST__TP_EXDATA_PROTO0() void *__tp_data
135 #define LTTNG_UST__TP_EXDATA_PROTO1(a) void *__tp_data
136 #define LTTNG_UST__TP_EXDATA_PROTO2(a,b) void *__tp_data,a b
137 #define LTTNG_UST__TP_EXDATA_PROTO4(a,b,c,d) void *__tp_data,a b,c d
138 #define LTTNG_UST__TP_EXDATA_PROTO6(a,b,c,d,e,f) void *__tp_data,a b,c d,e f
139 #define LTTNG_UST__TP_EXDATA_PROTO8(a,b,c,d,e,f,g,h) void *__tp_data,a b,c d,e f,g h
140 #define LTTNG_UST__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
141 #define LTTNG_UST__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
142 #define LTTNG_UST__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
143 #define LTTNG_UST__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
144 #define LTTNG_UST__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
145 #define LTTNG_UST__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
147 /* Preprocessor trick to count arguments. Inspired from sdt.h. */
148 #define LTTNG_UST__TP_NARGS(...) LTTNG_UST___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)
149 #define LTTNG_UST___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
150 #define LTTNG_UST__TP_PROTO_N(N, ...) LTTNG_UST__TP_PARAMS(LTTNG_UST__TP_COMBINE_TOKENS(LTTNG_UST__TP_EXPROTO, N)(__VA_ARGS__))
151 #define LTTNG_UST__TP_VAR_N(N, ...) LTTNG_UST__TP_PARAMS(LTTNG_UST__TP_COMBINE_TOKENS(LTTNG_UST__TP_EXVAR, N)(__VA_ARGS__))
152 #define LTTNG_UST__TP_DATA_PROTO_N(N, ...) LTTNG_UST__TP_PARAMS(LTTNG_UST__TP_COMBINE_TOKENS(LTTNG_UST__TP_EXDATA_PROTO, N)(__VA_ARGS__))
153 #define LTTNG_UST__TP_DATA_VAR_N(N, ...) LTTNG_UST__TP_PARAMS(LTTNG_UST__TP_COMBINE_TOKENS(LTTNG_UST__TP_EXDATA_VAR, N)(__VA_ARGS__))
154 #define LTTNG_UST__TP_ARGS_PROTO(...) LTTNG_UST__TP_PROTO_N(LTTNG_UST__TP_NARGS(0, ##__VA_ARGS__), ##__VA_ARGS__)
155 #define LTTNG_UST__TP_ARGS_VAR(...) LTTNG_UST__TP_VAR_N(LTTNG_UST__TP_NARGS(0, ##__VA_ARGS__), ##__VA_ARGS__)
156 #define LTTNG_UST__TP_ARGS_DATA_PROTO(...) LTTNG_UST__TP_DATA_PROTO_N(LTTNG_UST__TP_NARGS(0, ##__VA_ARGS__), ##__VA_ARGS__)
157 #define LTTNG_UST__TP_ARGS_DATA_VAR(...) LTTNG_UST__TP_DATA_VAR_N(LTTNG_UST__TP_NARGS(0, ##__VA_ARGS__), ##__VA_ARGS__)
158 #define LTTNG_UST__TP_PARAMS(...) __VA_ARGS__
161 * sizeof(#_provider) - 1 : length of the provider string (excluding \0).
162 * sizeof(#_name) - 1 : length of the name string (excluding \0).
163 * + 1 : separator between provider and event name.
165 * Upper bound (inclusive) is LTTNG_UST_TRACEPOINT_NAME_LEN_MAX - 1 to
169 * left hand side: sizeof(#_provider) - 1 + sizeof(#_name) - 1 + 1
170 * right hand side: LTTNG_UST_TRACEPOINT_NAME_LEN_MAX - 1
171 * operator: <= (inclusive)
172 * Simplified in the code below.
174 #define lttng_ust_tracepoint_validate_name_len(_provider, _name) \
175 lttng_ust_static_assert(sizeof(#_provider) + sizeof(#_name) <= LTTNG_UST_TRACEPOINT_NAME_LEN_MAX, \
176 "Tracepoint name length is too long", \
177 Tracepoint_name_length_is_too_long)
180 * The tracepoint cb is marked always inline so we can distinguish
181 * between caller's ip addresses within the probe using the return
184 #define LTTNG_UST__DECLARE_TRACEPOINT(_provider, _name, ...) \
185 extern struct lttng_ust_tracepoint lttng_ust_tracepoint_##_provider##___##_name \
186 LTTNG_UST__TRACEPOINT_DEFINITION_VISIBILITY; \
188 void lttng_ust_tracepoint_cb_##_provider##___##_name(LTTNG_UST__TP_ARGS_PROTO(__VA_ARGS__)) \
189 __attribute__((always_inline, unused)) lttng_ust_notrace; \
191 void lttng_ust_tracepoint_cb_##_provider##___##_name(LTTNG_UST__TP_ARGS_PROTO(__VA_ARGS__)) \
193 struct lttng_ust_tracepoint_probe *__tp_probe; \
195 if (caa_unlikely(!LTTNG_UST_TP_RCU_LINK_TEST())) \
197 lttng_ust_tp_rcu_read_lock(); \
198 __tp_probe = lttng_ust_tp_rcu_dereference(lttng_ust_tracepoint_##_provider##___##_name.probes); \
199 if (caa_unlikely(!__tp_probe)) \
202 void (*__tp_cb)(void) = __tp_probe->func; \
203 void *__tp_data = __tp_probe->data; \
205 URCU_FORCE_CAST(void (*)(LTTNG_UST__TP_ARGS_DATA_PROTO(__VA_ARGS__)), __tp_cb) \
206 (LTTNG_UST__TP_ARGS_DATA_VAR(__VA_ARGS__)); \
207 } while ((++__tp_probe)->func); \
209 lttng_ust_tp_rcu_read_unlock(); \
212 void lttng_ust_tracepoint_register_##_provider##___##_name(char *provider_name, char *event_name, \
213 void (*func)(void), void *data) \
216 void lttng_ust_tracepoint_register_##_provider##___##_name(char *provider_name, char *event_name, \
217 void (*func)(void), void *data) \
219 lttng_ust_tracepoint_probe_register(provider_name, event_name, func, data, \
220 lttng_ust_tracepoint_##_provider##___##_name.signature); \
223 void lttng_ust_tracepoint_unregister_##_provider##___##_name(char *provider_name, char *event_name, \
224 void (*func)(void), void *data) \
227 void lttng_ust_tracepoint_unregister_##_provider##___##_name(char *provider_name, char *event_name, \
228 void (*func)(void), void *data) \
230 lttng_ust_tracepoint_probe_unregister(provider_name, event_name, func, data); \
233 extern int lttng_ust_tracepoint_probe_register(const char *provider_name
, const char *event_name
,
234 void (*func
)(void), void *data
, const char *signature
);
235 extern int lttng_ust_tracepoint_probe_unregister(const char *provider_name
, const char *event_name
,
236 void (*func
)(void), void *data
);
239 * tracepoint dynamic linkage handling (callbacks). Hidden visibility:
240 * shared across objects in a module/main executable.
242 * IMPORTANT: this structure is part of the ABI between instrumented
243 * applications and UST. Fields need to be only added at the end, never
244 * reordered, never removed.
246 * The field @struct_size should be used to determine the size of the
247 * structure. It should be queried before using additional fields added
248 * at the end of the structure.
250 struct lttng_ust_tracepoint_dlopen
{
251 uint32_t struct_size
;
253 void *liblttngust_handle
;
255 int (*lttng_ust_tracepoint_register_lib
)(struct lttng_ust_tracepoint
* const *tracepoints_start
,
256 int tracepoints_count
);
257 int (*lttng_ust_tracepoint_unregister_lib
)(struct lttng_ust_tracepoint
* const *tracepoints_start
);
258 void (*rcu_read_lock_sym
)(void);
259 void (*rcu_read_unlock_sym
)(void);
260 void *(*rcu_dereference_sym
)(void *p
);
262 /* End of base ABI. Fields below should be used after checking struct_size. */
265 extern struct lttng_ust_tracepoint_dlopen lttng_ust_tracepoint_dlopen
;
266 extern struct lttng_ust_tracepoint_dlopen
*lttng_ust_tracepoint_dlopen_ptr
;
269 * These weak symbols, the constructor, and destructor take care of
270 * registering only _one_ instance of the tracepoints per shared-ojbect
271 * (or for the whole main program).
273 int lttng_ust_tracepoint_registered
274 __attribute__((weak
, visibility("hidden")));
275 int lttng_ust_tracepoint_ptrs_registered
276 __attribute__((weak
, visibility("hidden")));
277 struct lttng_ust_tracepoint_dlopen lttng_ust_tracepoint_dlopen
278 __attribute__((weak
, visibility("hidden"))) = {
279 .struct_size
= sizeof(struct lttng_ust_tracepoint_dlopen
),
282 * Deal with gcc O1 optimisation issues with weak hidden symbols. gcc
283 * 4.8 and prior does not have the same behavior for symbol scoping on
284 * 32-bit powerpc depending on the object size: symbols for objects of 8
285 * bytes or less have the same address throughout a module, whereas they
286 * have different addresses between compile units for objects larger
287 * than 8 bytes. Add this pointer indirection to ensure that the symbol
288 * scoping match that of the other weak hidden symbols found in this
291 struct lttng_ust_tracepoint_dlopen
*lttng_ust_tracepoint_dlopen_ptr
292 __attribute__((weak
, visibility("hidden")));
295 * Tracepoint dynamic linkage handling (callbacks). Hidden visibility: shared
296 * across objects in a module/main executable. The callbacks are used to
297 * control and check if the destructors should be executed.
299 * IMPORTANT: this structure is part of the ABI between instrumented
300 * applications and UST. Fields need to be only added at the end, never
301 * reordered, never removed.
303 * The field @struct_size should be used to determine the size of the
304 * structure. It should be queried before using additional fields added
305 * at the end of the structure.
307 struct lttng_ust_tracepoint_destructors_syms
{
308 uint32_t struct_size
;
310 void (*tracepoint_disable_destructors
)(void);
311 int (*tracepoint_get_destructors_state
)(void);
313 /* End of base ABI. Fields below should be used after checking struct_size. */
316 extern struct lttng_ust_tracepoint_destructors_syms lttng_ust_tracepoint_destructors_syms
;
317 extern struct lttng_ust_tracepoint_destructors_syms
*lttng_ust_tracepoint_destructors_syms_ptr
;
319 struct lttng_ust_tracepoint_destructors_syms lttng_ust_tracepoint_destructors_syms
320 __attribute__((weak
, visibility("hidden"))) = {
321 .struct_size
= sizeof(struct lttng_ust_tracepoint_destructors_syms
),
323 struct lttng_ust_tracepoint_destructors_syms
*lttng_ust_tracepoint_destructors_syms_ptr
324 __attribute__((weak
, visibility("hidden")));
326 static inline void tracepoint_disable_destructors(void)
328 if (!lttng_ust_tracepoint_dlopen_ptr
)
329 lttng_ust_tracepoint_dlopen_ptr
= <tng_ust_tracepoint_dlopen
;
330 if (!lttng_ust_tracepoint_destructors_syms_ptr
)
331 lttng_ust_tracepoint_destructors_syms_ptr
= <tng_ust_tracepoint_destructors_syms
;
332 if (lttng_ust_tracepoint_dlopen_ptr
->liblttngust_handle
333 && lttng_ust_tracepoint_destructors_syms_ptr
->tracepoint_disable_destructors
)
334 lttng_ust_tracepoint_destructors_syms_ptr
->tracepoint_disable_destructors();
339 lttng_ust_tracepoint__init_urcu_sym(void)
342 lttng_ust_tracepoint__init_urcu_sym(void)
344 if (!lttng_ust_tracepoint_dlopen_ptr
)
345 lttng_ust_tracepoint_dlopen_ptr
= <tng_ust_tracepoint_dlopen
;
347 * Symbols below are needed by tracepoint call sites and probe
350 if (!lttng_ust_tracepoint_dlopen_ptr
->rcu_read_lock_sym
)
351 lttng_ust_tracepoint_dlopen_ptr
->rcu_read_lock_sym
=
352 URCU_FORCE_CAST(void (*)(void),
353 dlsym(lttng_ust_tracepoint_dlopen_ptr
->liblttngust_handle
,
354 "lttng_ust_tp_rcu_read_lock"));
355 if (!lttng_ust_tracepoint_dlopen_ptr
->rcu_read_unlock_sym
)
356 lttng_ust_tracepoint_dlopen_ptr
->rcu_read_unlock_sym
=
357 URCU_FORCE_CAST(void (*)(void),
358 dlsym(lttng_ust_tracepoint_dlopen_ptr
->liblttngust_handle
,
359 "lttng_ust_tp_rcu_read_unlock"));
360 if (!lttng_ust_tracepoint_dlopen_ptr
->rcu_dereference_sym
)
361 lttng_ust_tracepoint_dlopen_ptr
->rcu_dereference_sym
=
362 URCU_FORCE_CAST(void *(*)(void *p
),
363 dlsym(lttng_ust_tracepoint_dlopen_ptr
->liblttngust_handle
,
364 "lttng_ust_tp_rcu_dereference_sym"));
368 lttng_ust_tracepoint__init_urcu_sym(void)
371 lttng_ust_tracepoint__init_urcu_sym(void)
377 lttng_ust__tracepoints__init(void)
378 lttng_ust_notrace
__attribute__((constructor
));
380 lttng_ust__tracepoints__init(void)
382 if (lttng_ust_tracepoint_registered
++) {
383 if (!lttng_ust_tracepoint_dlopen_ptr
->liblttngust_handle
)
385 lttng_ust_tracepoint__init_urcu_sym();
389 if (!lttng_ust_tracepoint_dlopen_ptr
)
390 lttng_ust_tracepoint_dlopen_ptr
= <tng_ust_tracepoint_dlopen
;
391 if (!lttng_ust_tracepoint_dlopen_ptr
->liblttngust_handle
)
392 lttng_ust_tracepoint_dlopen_ptr
->liblttngust_handle
=
393 dlopen(LTTNG_UST_TRACEPOINT_LIB_SONAME
, RTLD_NOW
| RTLD_GLOBAL
);
394 if (!lttng_ust_tracepoint_dlopen_ptr
->liblttngust_handle
)
396 lttng_ust_tracepoint__init_urcu_sym();
400 lttng_ust__tracepoints__destroy(void)
401 lttng_ust_notrace
__attribute__((destructor
));
403 lttng_ust__tracepoints__destroy(void)
407 if (--lttng_ust_tracepoint_registered
)
409 if (!lttng_ust_tracepoint_dlopen_ptr
)
410 lttng_ust_tracepoint_dlopen_ptr
= <tng_ust_tracepoint_dlopen
;
411 if (!lttng_ust_tracepoint_destructors_syms_ptr
)
412 lttng_ust_tracepoint_destructors_syms_ptr
= <tng_ust_tracepoint_destructors_syms
;
413 if (!lttng_ust_tracepoint_dlopen_ptr
->liblttngust_handle
)
415 if (lttng_ust_tracepoint_ptrs_registered
)
418 * Lookup if destructors must be executed using the new method.
420 if (lttng_ust_tracepoint_destructors_syms_ptr
->tracepoint_get_destructors_state
421 && !lttng_ust_tracepoint_destructors_syms_ptr
->tracepoint_get_destructors_state()) {
423 * The tracepoint_get_destructors_state symbol was found with
424 * dlsym but its returned value is 0 meaning that destructors
425 * must not be executed.
429 ret
= dlclose(lttng_ust_tracepoint_dlopen_ptr
->liblttngust_handle
);
431 fprintf(stderr
, "Error (%d) in dlclose\n", ret
);
434 memset(lttng_ust_tracepoint_dlopen_ptr
, 0, sizeof(*lttng_ust_tracepoint_dlopen_ptr
));
437 #if LTTNG_UST_COMPAT_API(0)
438 # if defined(TRACEPOINT_DEFINE) && !defined(LTTNG_UST_TRACEPOINT_DEFINE)
439 # define LTTNG_UST_TRACEPOINT_DEFINE
441 #endif /* #if LTTNG_UST_COMPAT_API(0) */
443 #ifdef LTTNG_UST_TRACEPOINT_DEFINE
446 * These weak symbols, the constructor, and destructor take care of
447 * registering only _one_ instance of the tracepoints per shared-ojbect
448 * (or for the whole main program).
450 extern struct lttng_ust_tracepoint
* const __start_lttng_ust_tracepoints_ptrs
[]
451 __attribute__((weak
, visibility("hidden")));
452 extern struct lttng_ust_tracepoint
* const __stop_lttng_ust_tracepoints_ptrs
[]
453 __attribute__((weak
, visibility("hidden")));
456 * When LTTNG_UST_TRACEPOINT_PROBE_DYNAMIC_LINKAGE is defined, we do not emit a
457 * unresolved symbol that requires the provider to be linked in. When
458 * LTTNG_UST_TRACEPOINT_PROBE_DYNAMIC_LINKAGE is not defined, we emit an
459 * unresolved symbol that depends on having the provider linked in,
460 * otherwise the linker complains. This deals with use of static
461 * libraries, ensuring that the linker does not remove the provider
462 * object from the executable.
465 #if LTTNG_UST_COMPAT_API(0)
466 # if defined(TRACEPOINT_PROBE_DYNAMIC_LINKAGE) && !defined(LTTNG_UST_TRACEPOINT_PROBE_DYNAMIC_LINKAGE)
467 # define LTTNG_UST_TRACEPOINT_PROBE_DYNAMIC_LINKAGE
469 #endif /* #if LTTNG_UST_COMPAT_API(0) */
471 #ifdef LTTNG_UST_TRACEPOINT_PROBE_DYNAMIC_LINKAGE
472 #define LTTNG_UST__TRACEPOINT_UNDEFINED_REF(provider) NULL
473 #else /* LTTNG_UST_TRACEPOINT_PROBE_DYNAMIC_LINKAGE */
474 #define LTTNG_UST__TRACEPOINT_UNDEFINED_REF(provider) <tng_ust_tracepoint_provider_##provider
475 #endif /* LTTNG_UST_TRACEPOINT_PROBE_DYNAMIC_LINKAGE */
478 * Note: to allow PIC code, we need to allow the linker to update the pointers
479 * in the lttng_ust_tracepoints_ptrs section.
480 * Therefore, this section is _not_ const (read-only).
482 #define LTTNG_UST__TP_EXTRACT_STRING(...) #__VA_ARGS__
484 #define LTTNG_UST__DEFINE_TRACEPOINT(_provider, _name, _args) \
485 lttng_ust_tracepoint_validate_name_len(_provider, _name); \
486 extern int lttng_ust_tracepoint_provider_##_provider \
487 LTTNG_UST__TRACEPOINT_PROVIDER_DEFINITION_VISIBILITY; \
488 static const char lttng_ust_tp_provider_strtab_##_provider##___##_name[] \
489 __attribute__((section("lttng_ust_tracepoints_strings"))) = \
491 static const char lttng_ust_tp_name_strtab_##_provider##___##_name[] \
492 __attribute__((section("lttng_ust_tracepoints_strings"))) = \
494 struct lttng_ust_tracepoint lttng_ust_tracepoint_##_provider##___##_name \
495 __attribute__((section("lttng_ust_tracepoints"))) \
496 LTTNG_UST__TRACEPOINT_DEFINITION_VISIBILITY = { \
497 sizeof(struct lttng_ust_tracepoint), \
498 lttng_ust_tp_provider_strtab_##_provider##___##_name, \
499 lttng_ust_tp_name_strtab_##_provider##___##_name, \
502 LTTNG_UST__TRACEPOINT_UNDEFINED_REF(_provider), \
503 LTTNG_UST__TP_EXTRACT_STRING(_args), \
505 static struct lttng_ust_tracepoint * \
506 lttng_ust_tracepoint_ptr_##_provider##___##_name \
507 __attribute__((section("lttng_ust_tracepoints_ptrs"), used)) \
508 __lttng_ust_variable_attribute_no_sanitize_address = \
509 <tng_ust_tracepoint_##_provider##___##_name;
512 lttng_ust__tracepoints__ptrs_init(void)
513 lttng_ust_notrace
__attribute__((constructor
));
515 lttng_ust__tracepoints__ptrs_init(void)
517 if (lttng_ust_tracepoint_ptrs_registered
++)
519 if (!lttng_ust_tracepoint_dlopen_ptr
)
520 lttng_ust_tracepoint_dlopen_ptr
= <tng_ust_tracepoint_dlopen
;
521 if (!lttng_ust_tracepoint_dlopen_ptr
->liblttngust_handle
)
522 lttng_ust_tracepoint_dlopen_ptr
->liblttngust_handle
=
523 dlopen(LTTNG_UST_TRACEPOINT_LIB_SONAME
, RTLD_NOW
| RTLD_GLOBAL
);
524 if (!lttng_ust_tracepoint_dlopen_ptr
->liblttngust_handle
)
526 if (!lttng_ust_tracepoint_destructors_syms_ptr
)
527 lttng_ust_tracepoint_destructors_syms_ptr
= <tng_ust_tracepoint_destructors_syms
;
528 lttng_ust_tracepoint_dlopen_ptr
->lttng_ust_tracepoint_register_lib
=
529 URCU_FORCE_CAST(int (*)(struct lttng_ust_tracepoint
* const *, int),
530 dlsym(lttng_ust_tracepoint_dlopen_ptr
->liblttngust_handle
,
531 "lttng_ust_tracepoint_register_lib"));
532 lttng_ust_tracepoint_dlopen_ptr
->lttng_ust_tracepoint_unregister_lib
=
533 URCU_FORCE_CAST(int (*)(struct lttng_ust_tracepoint
* const *),
534 dlsym(lttng_ust_tracepoint_dlopen_ptr
->liblttngust_handle
,
535 "lttng_ust_tracepoint_unregister_lib"));
536 lttng_ust_tracepoint_destructors_syms_ptr
->tracepoint_disable_destructors
=
537 URCU_FORCE_CAST(void (*)(void),
538 dlsym(lttng_ust_tracepoint_dlopen_ptr
->liblttngust_handle
,
539 "lttng_ust_tp_disable_destructors"));
540 lttng_ust_tracepoint_destructors_syms_ptr
->tracepoint_get_destructors_state
=
541 URCU_FORCE_CAST(int (*)(void),
542 dlsym(lttng_ust_tracepoint_dlopen_ptr
->liblttngust_handle
,
543 "lttng_ust_tp_get_destructors_state"));
544 lttng_ust_tracepoint__init_urcu_sym();
545 if (lttng_ust_tracepoint_dlopen_ptr
->lttng_ust_tracepoint_register_lib
) {
546 lttng_ust_tracepoint_dlopen_ptr
->lttng_ust_tracepoint_register_lib(__start_lttng_ust_tracepoints_ptrs
,
547 __stop_lttng_ust_tracepoints_ptrs
-
548 __start_lttng_ust_tracepoints_ptrs
);
553 lttng_ust__tracepoints__ptrs_destroy(void)
554 lttng_ust_notrace
__attribute__((destructor
));
556 lttng_ust__tracepoints__ptrs_destroy(void)
560 if (--lttng_ust_tracepoint_ptrs_registered
)
562 if (!lttng_ust_tracepoint_dlopen_ptr
)
563 lttng_ust_tracepoint_dlopen_ptr
= <tng_ust_tracepoint_dlopen
;
564 if (!lttng_ust_tracepoint_destructors_syms_ptr
)
565 lttng_ust_tracepoint_destructors_syms_ptr
= <tng_ust_tracepoint_destructors_syms
;
566 if (lttng_ust_tracepoint_dlopen_ptr
->lttng_ust_tracepoint_unregister_lib
)
567 lttng_ust_tracepoint_dlopen_ptr
->lttng_ust_tracepoint_unregister_lib(__start_lttng_ust_tracepoints_ptrs
);
568 if (lttng_ust_tracepoint_dlopen_ptr
->liblttngust_handle
569 && lttng_ust_tracepoint_destructors_syms_ptr
->tracepoint_get_destructors_state
570 && lttng_ust_tracepoint_destructors_syms_ptr
->tracepoint_get_destructors_state()
571 && !lttng_ust_tracepoint_ptrs_registered
) {
572 ret
= dlclose(lttng_ust_tracepoint_dlopen_ptr
->liblttngust_handle
);
574 fprintf(stderr
, "Error (%d) in dlclose\n", ret
);
577 memset(lttng_ust_tracepoint_dlopen_ptr
, 0, sizeof(*lttng_ust_tracepoint_dlopen_ptr
));
581 #else /* LTTNG_UST_TRACEPOINT_DEFINE */
583 #define LTTNG_UST__DEFINE_TRACEPOINT(_provider, _name, _args)
585 #endif /* #else LTTNG_UST_TRACEPOINT_DEFINE */
587 #if LTTNG_UST_COMPAT_API(0)
588 #define tracepoint lttng_ust_tracepoint
589 #define do_tracepoint lttng_ust_do_tracepoint
590 #define tracepoint_enabled lttng_ust_tracepoint_enabled
591 #define TP_ARGS LTTNG_UST_TP_ARGS
592 #endif /* #if LTTNG_UST_COMPAT_API(0) */
598 #endif /* _LTTNG_UST_TRACEPOINT_H */
600 /* The following declarations must be outside re-inclusion protection. */
603 * LTTNG_UST_TRACEPOINT_HIDDEN_DEFINITION: Define this before including
604 * a tracepoint instrumentation header to hide symbols associated with
605 * tracepoint module instrumentation. This is useful if all compile
606 * units using the lttng_ust_tracepoint(),
607 * lttng_ust_tracepoint_enabled() and lttng_ust_do_tracepoint() macros
608 * is within the same module as the compile unit including the
609 * tracepoint header after defining LTTNG_UST_TRACEPOINT_DEFINE.
612 #undef LTTNG_UST__TRACEPOINT_DEFINITION_VISIBILITY
613 #ifdef LTTNG_UST_TRACEPOINT_HIDDEN_DEFINITION
614 #define LTTNG_UST__TRACEPOINT_DEFINITION_VISIBILITY __attribute__((visibility("hidden")))
616 #define LTTNG_UST__TRACEPOINT_DEFINITION_VISIBILITY __attribute__((visibility("default")))
620 * LTTNG_UST_TRACEPOINT_PROVIDER_HIDDEN_DEFINITION: Define this before
621 * including a tracepoint instrumentation header to hide symbols
622 * associated with the tracepoint provider. This is useful if the
623 * tracepoint definition (including the header after defining
624 * LTTNG_UST_TRACEPOINT_DEFINE) is in the same module as the provider
625 * (including the header after defining
626 * LTTNG_UST_TRACEPOINT_CREATE_PROBES).
628 #undef LTTNG_UST__TRACEPOINT_PROVIDER_DEFINITION_VISIBILITY
629 #ifdef LTTNG_UST_TRACEPOINT_PROVIDER_HIDDEN_DEFINITION
630 #define LTTNG_UST__TRACEPOINT_PROVIDER_DEFINITION_VISIBILITY __attribute__((visibility("hidden")))
632 #define LTTNG_UST__TRACEPOINT_PROVIDER_DEFINITION_VISIBILITY __attribute__((visibility("default")))
635 #ifndef LTTNG_UST_TRACEPOINT_ENUM
638 * Tracepoint Enumerations
640 * The enumeration is a mapping between an integer, or range of integers, and
641 * a string. It can be used to have a more compact trace in cases where the
642 * possible values for a field are limited:
646 * LTTNG_UST_TRACEPOINT_ENUM(someproject_component, enumname,
647 * LTTNG_UST_TP_ENUM_VALUES(
648 * lttng_ust_field_enum_value("even", 0)
649 * lttng_ust_field_enum_value("uneven", 1)
650 * lttng_ust_field_enum_range("twoto4", 2, 4)
651 * lttng_ust_field_enum_value("five", 5)
655 * Where "someproject_component" is the name of the component this enumeration
656 * belongs to and "enumname" identifies this enumeration. Inside the
657 * LTTNG_UST_TP_ENUM_VALUES macro is the actual mapping. Each string value can map
658 * to either a single value with lttng_ust_field_enum_value or a range of values
659 * with lttng_ust_field_enum_range.
661 * Enumeration ranges may overlap, but the behavior is implementation-defined,
662 * each trace reader will handle overlapping as it wishes.
664 * That enumeration can then be used in a field inside the TP_FIELD macro using
665 * the following line:
667 * lttng_ust_field_enum(someproject_component, enumname, enumtype, enumfield, enumval)
669 * Where "someproject_component" and "enumname" match those in the
670 * LTTNG_UST_TRACEPOINT_ENUM, "enumtype" is a signed or unsigned integer type
671 * backing the enumeration, "enumfield" is the name of the field and
672 * "enumval" is the value.
675 #define LTTNG_UST_TRACEPOINT_ENUM(provider, name, values)
677 #if LTTNG_UST_COMPAT_API(0)
678 #define TRACEPOINT_ENUM LTTNG_UST_TRACEPOINT_ENUM
679 #endif /* #if LTTNG_UST_COMPAT_API(0) */
681 #endif /* #ifndef LTTNG_UST_TRACEPOINT_ENUM */
683 #ifndef LTTNG_UST_TRACEPOINT_EVENT
686 * How to use the LTTNG_UST_TRACEPOINT_EVENT macro:
690 * LTTNG_UST_TRACEPOINT_EVENT(someproject_component, event_name,
692 * * LTTNG_UST_TP_ARGS takes from 0 to 10 "type, field_name" pairs *
694 * LTTNG_UST_TP_ARGS(int, arg0, void *, arg1, char *, string, size_t, strlen,
695 * long *, arg4, size_t, arg4_len),
697 * * LTTNG_UST_TP_FIELDS describes the event payload layout in the trace *
699 * LTTNG_UST_TP_FIELDS(
700 * * Integer, printed in base 10 *
701 * lttng_ust_field_integer(int, field_a, arg0)
703 * * Integer, printed with 0x base 16 *
704 * lttng_ust_field_integer_hex(unsigned long, field_d, arg1)
707 * lttng_ust_field_enum(someproject_component, enum_name, int, field_e, arg0)
709 * * Array Sequence, printed as UTF8-encoded array of bytes *
710 * lttng_ust_field_array_text(char, field_b, string, FIXED_LEN)
711 * lttng_ust_field_sequence_text(char, field_c, string, size_t, strlen)
713 * * String, printed as UTF8-encoded string *
714 * lttng_ust_field_string(field_e, string)
716 * * Array sequence of signed integer values *
717 * lttng_ust_field_array(long, field_f, arg4, FIXED_LEN4)
718 * lttng_ust_field_sequence(long, field_g, arg4, size_t, arg4_len)
722 * More detailed explanation:
724 * The name of the tracepoint is expressed as a tuple with the provider
725 * and name arguments.
727 * The provider and name should be a proper C99 identifier.
728 * The "provider" and "name" MUST follow these rules to ensure no
729 * namespace clash occurs:
731 * For projects (applications and libraries) for which an entity
732 * specific to the project controls the source code and thus its
733 * tracepoints (typically with a scope larger than a single company):
736 * project_component, event
740 * Where "project" is the name of the project,
741 * "component" is the name of the project component (which may
742 * include several levels of sub-components, e.g.
743 * ...component_subcomponent_...) where the tracepoint is located
745 * "event" is the name of the tracepoint event.
747 * For projects issued from a single company wishing to advertise that
748 * the company controls the source code and thus the tracepoints, the
749 * "com_" prefix should be used:
752 * com_company_project_component, event
754 * com_company_project, event
756 * Where "company" is the name of the company,
757 * "project" is the name of the project,
758 * "component" is the name of the project component (which may
759 * include several levels of sub-components, e.g.
760 * ...component_subcomponent_...) where the tracepoint is located
762 * "event" is the name of the tracepoint event.
764 * the provider:event identifier is limited to 127 characters.
767 #define LTTNG_UST_TRACEPOINT_EVENT(provider, name, args, fields) \
768 LTTNG_UST__DECLARE_TRACEPOINT(provider, name, LTTNG_UST__TP_PARAMS(args)) \
769 LTTNG_UST__DEFINE_TRACEPOINT(provider, name, LTTNG_UST__TP_PARAMS(args))
771 #define LTTNG_UST_TRACEPOINT_EVENT_CLASS(provider, name, args, fields)
773 #define LTTNG_UST_TRACEPOINT_EVENT_INSTANCE(provider, _template, name, args) \
774 LTTNG_UST__DECLARE_TRACEPOINT(provider, name, LTTNG_UST__TP_PARAMS(args)) \
775 LTTNG_UST__DEFINE_TRACEPOINT(provider, name, LTTNG_UST__TP_PARAMS(args))
777 #if LTTNG_UST_COMPAT_API(0)
778 #define TRACEPOINT_EVENT LTTNG_UST_TRACEPOINT_EVENT
779 #define TRACEPOINT_EVENT_CLASS LTTNG_UST_TRACEPOINT_EVENT_CLASS
780 #define TRACEPOINT_EVENT_INSTANCE LTTNG_UST_TRACEPOINT_EVENT_INSTANCE
781 #endif /* #if LTTNG_UST_COMPAT_API(0) */
783 #endif /* #ifndef LTTNG_UST_TRACEPOINT_EVENT */
785 #ifndef LTTNG_UST_TRACEPOINT_LOGLEVEL
788 * Tracepoint Loglevels
790 * Typical use of these loglevels:
792 * The loglevels go from 0 to 14. Higher numbers imply the most
793 * verbosity (higher event throughput expected.
795 * Loglevels 0 through 6, and loglevel 14, match syslog(3) loglevels
796 * semantic. Loglevels 7 through 13 offer more fine-grained selection of
799 * LTTNG_UST_TRACEPOINT_LOGLEVEL_EMERG 0
802 * LTTNG_UST_TRACEPOINT_LOGLEVEL_ALERT 1
803 * action must be taken immediately
805 * LTTNG_UST_TRACEPOINT_LOGLEVEL_CRIT 2
806 * critical conditions
808 * LTTNG_UST_TRACEPOINT_LOGLEVEL_ERR 3
811 * LTTNG_UST_TRACEPOINT_LOGLEVEL_WARNING 4
814 * LTTNG_UST_TRACEPOINT_LOGLEVEL_NOTICE 5
815 * normal, but significant, condition
817 * LTTNG_UST_TRACEPOINT_LOGLEVEL_INFO 6
818 * informational message
820 * LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_SYSTEM 7
821 * debug information with system-level scope (set of programs)
823 * LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_PROGRAM 8
824 * debug information with program-level scope (set of processes)
826 * LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_PROCESS 9
827 * debug information with process-level scope (set of modules)
829 * LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_MODULE 10
830 * debug information with module (executable/library) scope (set of units)
832 * LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_UNIT 11
833 * debug information with compilation unit scope (set of functions)
835 * LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_FUNCTION 12
836 * debug information with function-level scope
838 * LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_LINE 13
839 * debug information with line-level scope (LTTNG_UST_TRACEPOINT_EVENT default)
841 * LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG 14
842 * debug-level message
844 * Declare tracepoint loglevels for tracepoints. A LTTNG_UST_TRACEPOINT_EVENT
845 * should be declared prior to the the LTTNG_UST_TRACEPOINT_LOGLEVEL for a given
846 * tracepoint name. The first field is the provider name, the second
847 * field is the name of the tracepoint, the third field is the loglevel
850 * LTTNG_UST_TRACEPOINT_LOGLEVEL(< [com_company_]project[_component] >, < event >,
853 * The LTTNG_UST_TRACEPOINT_PROVIDER must be already declared before declaring a
854 * LTTNG_UST_TRACEPOINT_LOGLEVEL.
858 LTTNG_UST_TRACEPOINT_LOGLEVEL_EMERG
= 0,
859 LTTNG_UST_TRACEPOINT_LOGLEVEL_ALERT
= 1,
860 LTTNG_UST_TRACEPOINT_LOGLEVEL_CRIT
= 2,
861 LTTNG_UST_TRACEPOINT_LOGLEVEL_ERR
= 3,
862 LTTNG_UST_TRACEPOINT_LOGLEVEL_WARNING
= 4,
863 LTTNG_UST_TRACEPOINT_LOGLEVEL_NOTICE
= 5,
864 LTTNG_UST_TRACEPOINT_LOGLEVEL_INFO
= 6,
865 LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_SYSTEM
= 7,
866 LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_PROGRAM
= 8,
867 LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_PROCESS
= 9,
868 LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_MODULE
= 10,
869 LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_UNIT
= 11,
870 LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_FUNCTION
= 12,
871 LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_LINE
= 13,
872 LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG
= 14,
875 #define LTTNG_UST_TRACEPOINT_LOGLEVEL(provider, name, loglevel)
877 #if LTTNG_UST_COMPAT_API(0)
878 #define TRACEPOINT_LOGLEVEL LTTNG_UST_TRACEPOINT_LOGLEVEL
880 #define TRACE_EMERG LTTNG_UST_TRACEPOINT_LOGLEVEL_EMERG
881 #define TRACE_ALERT LTTNG_UST_TRACEPOINT_LOGLEVEL_ALERT
882 #define TRACE_CRIT LTTNG_UST_TRACEPOINT_LOGLEVEL_CRIT
883 #define TRACE_ERR LTTNG_UST_TRACEPOINT_LOGLEVEL_ERR
884 #define TRACE_WARNING LTTNG_UST_TRACEPOINT_LOGLEVEL_WARNING
885 #define TRACE_NOTICE LTTNG_UST_TRACEPOINT_LOGLEVEL_NOTICE
886 #define TRACE_INFO LTTNG_UST_TRACEPOINT_LOGLEVEL_INFO
887 #define TRACE_DEBUG_SYSTEM LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_SYSTEM
888 #define TRACE_DEBUG_PROGRAM LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_PROGRAM
889 #define TRACE_DEBUG_PROCESS LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_PROCESS
890 #define TRACE_DEBUG_MODULE LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_MODULE
891 #define TRACE_DEBUG_UNIT LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_UNIT
892 #define TRACE_DEBUG_FUNCTION LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_FUNCTION
893 #define TRACE_DEBUG_LINE LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_LINE
894 #define TRACE_DEBUG LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG
897 #endif /* #ifndef LTTNG_UST_TRACEPOINT_LOGLEVEL */
899 #ifndef LTTNG_UST_TRACEPOINT_MODEL_EMF_URI
901 #define LTTNG_UST_TRACEPOINT_MODEL_EMF_URI(provider, name, uri)
903 #if LTTNG_UST_COMPAT_API(0)
904 #define TRACEPOINT_MODEL_EMF_URI LTTNG_UST_TRACEPOINT_MODEL_EMF_URI
907 #endif /* #ifndef LTTNG_UST_TRACEPOINT_MODEL_EMF_URI */