1 #ifndef _LTTNG_TRACEPOINT_H
2 #define _LTTNG_TRACEPOINT_H
5 * Copyright 2011-2012 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
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:
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
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
26 #include <lttng/tracepoint-types.h>
27 #include <lttng/tracepoint-rcu.h>
28 #include <urcu/compiler.h>
29 #include <dlfcn.h> /* for dlopen */
30 #include <string.h> /* for memset */
32 #include <lttng/ust-config.h> /* for sdt */
33 #include <lttng/ust-compiler.h>
35 #ifdef LTTNG_UST_HAVE_SDT_INTEGRATION
36 #define SDT_USE_VARIADIC
39 #define STAP_PROBEV(...)
46 #define tracepoint(provider, name, ...) \
48 STAP_PROBEV(provider, name, ## __VA_ARGS__); \
49 if (caa_unlikely(__tracepoint_##provider##___##name.state)) \
50 __tracepoint_cb_##provider##___##name(__VA_ARGS__); \
53 #define TP_ARGS(...) __VA_ARGS__
56 * TP_ARGS takes tuples of type, argument separated by a comma.
57 * It can take up to 10 tuples (which means that less than 10 tuples is
59 * Each tuple is also separated by a comma.
61 #define __TP_COMBINE_TOKENS(_tokena, _tokenb) \
63 #define _TP_COMBINE_TOKENS(_tokena, _tokenb) \
64 __TP_COMBINE_TOKENS(_tokena, _tokenb)
65 #define __TP_COMBINE_TOKENS3(_tokena, _tokenb, _tokenc) \
66 _tokena##_tokenb##_tokenc
67 #define _TP_COMBINE_TOKENS3(_tokena, _tokenb, _tokenc) \
68 __TP_COMBINE_TOKENS3(_tokena, _tokenb, _tokenc)
69 #define __TP_COMBINE_TOKENS4(_tokena, _tokenb, _tokenc, _tokend) \
70 _tokena##_tokenb##_tokenc##_tokend
71 #define _TP_COMBINE_TOKENS4(_tokena, _tokenb, _tokenc, _tokend) \
72 __TP_COMBINE_TOKENS4(_tokena, _tokenb, _tokenc, _tokend)
75 * _TP_EXVAR* extract the var names.
76 * _TP_EXVAR1 and _TP_EXDATA_VAR1 are needed for -std=c99.
80 #define _TP_EXVAR2(a,b) b
81 #define _TP_EXVAR4(a,b,c,d) b,d
82 #define _TP_EXVAR6(a,b,c,d,e,f) b,d,f
83 #define _TP_EXVAR8(a,b,c,d,e,f,g,h) b,d,f,h
84 #define _TP_EXVAR10(a,b,c,d,e,f,g,h,i,j) b,d,f,h,j
85 #define _TP_EXVAR12(a,b,c,d,e,f,g,h,i,j,k,l) b,d,f,h,j,l
86 #define _TP_EXVAR14(a,b,c,d,e,f,g,h,i,j,k,l,m,n) b,d,f,h,j,l,n
87 #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
88 #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
89 #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
91 #define _TP_EXDATA_VAR0() __tp_data
92 #define _TP_EXDATA_VAR1(a) __tp_data
93 #define _TP_EXDATA_VAR2(a,b) __tp_data,b
94 #define _TP_EXDATA_VAR4(a,b,c,d) __tp_data,b,d
95 #define _TP_EXDATA_VAR6(a,b,c,d,e,f) __tp_data,b,d,f
96 #define _TP_EXDATA_VAR8(a,b,c,d,e,f,g,h) __tp_data,b,d,f,h
97 #define _TP_EXDATA_VAR10(a,b,c,d,e,f,g,h,i,j) __tp_data,b,d,f,h,j
98 #define _TP_EXDATA_VAR12(a,b,c,d,e,f,g,h,i,j,k,l) __tp_data,b,d,f,h,j,l
99 #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
100 #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
101 #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
102 #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
105 * _TP_EXPROTO* extract tuples of type, var.
106 * _TP_EXPROTO1 and _TP_EXDATA_PROTO1 are needed for -std=c99.
108 #define _TP_EXPROTO0() void
109 #define _TP_EXPROTO1(a) void
110 #define _TP_EXPROTO2(a,b) a b
111 #define _TP_EXPROTO4(a,b,c,d) a b,c d
112 #define _TP_EXPROTO6(a,b,c,d,e,f) a b,c d,e f
113 #define _TP_EXPROTO8(a,b,c,d,e,f,g,h) a b,c d,e f,g h
114 #define _TP_EXPROTO10(a,b,c,d,e,f,g,h,i,j) a b,c d,e f,g h,i j
115 #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
116 #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
117 #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
118 #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
119 #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
121 #define _TP_EXDATA_PROTO0() void *__tp_data
122 #define _TP_EXDATA_PROTO1(a) void *__tp_data
123 #define _TP_EXDATA_PROTO2(a,b) void *__tp_data,a b
124 #define _TP_EXDATA_PROTO4(a,b,c,d) void *__tp_data,a b,c d
125 #define _TP_EXDATA_PROTO6(a,b,c,d,e,f) void *__tp_data,a b,c d,e f
126 #define _TP_EXDATA_PROTO8(a,b,c,d,e,f,g,h) void *__tp_data,a b,c d,e f,g h
127 #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
128 #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
129 #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
130 #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
131 #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
132 #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
134 /* Preprocessor trick to count arguments. Inspired from sdt.h. */
135 #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)
136 #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
137 #define _TP_PROTO_N(N, ...) _TP_PARAMS(_TP_COMBINE_TOKENS(_TP_EXPROTO, N)(__VA_ARGS__))
138 #define _TP_VAR_N(N, ...) _TP_PARAMS(_TP_COMBINE_TOKENS(_TP_EXVAR, N)(__VA_ARGS__))
139 #define _TP_DATA_PROTO_N(N, ...) _TP_PARAMS(_TP_COMBINE_TOKENS(_TP_EXDATA_PROTO, N)(__VA_ARGS__))
140 #define _TP_DATA_VAR_N(N, ...) _TP_PARAMS(_TP_COMBINE_TOKENS(_TP_EXDATA_VAR, N)(__VA_ARGS__))
141 #define _TP_ARGS_PROTO(...) _TP_PROTO_N(_TP_NARGS(0, ##__VA_ARGS__), ##__VA_ARGS__)
142 #define _TP_ARGS_VAR(...) _TP_VAR_N(_TP_NARGS(0, ##__VA_ARGS__), ##__VA_ARGS__)
143 #define _TP_ARGS_DATA_PROTO(...) _TP_DATA_PROTO_N(_TP_NARGS(0, ##__VA_ARGS__), ##__VA_ARGS__)
144 #define _TP_ARGS_DATA_VAR(...) _TP_DATA_VAR_N(_TP_NARGS(0, ##__VA_ARGS__), ##__VA_ARGS__)
145 #define _TP_PARAMS(...) __VA_ARGS__
147 #define _DECLARE_TRACEPOINT(_provider, _name, ...) \
148 extern struct tracepoint __tracepoint_##_provider##___##_name; \
149 static inline lttng_ust_notrace \
150 void __tracepoint_cb_##_provider##___##_name(_TP_ARGS_PROTO(__VA_ARGS__)); \
152 void __tracepoint_cb_##_provider##___##_name(_TP_ARGS_PROTO(__VA_ARGS__)) \
154 struct tracepoint_probe *__tp_probe; \
156 if (caa_unlikely(!TP_RCU_LINK_TEST())) \
158 tp_rcu_read_lock_bp(); \
159 __tp_probe = tp_rcu_dereference_bp(__tracepoint_##_provider##___##_name.probes); \
160 if (caa_unlikely(!__tp_probe)) \
163 void (*__tp_cb)(void) = __tp_probe->func; \
164 void *__tp_data = __tp_probe->data; \
166 URCU_FORCE_CAST(void (*)(_TP_ARGS_DATA_PROTO(__VA_ARGS__)), __tp_cb) \
167 (_TP_ARGS_DATA_VAR(__VA_ARGS__)); \
168 } while ((++__tp_probe)->func); \
170 tp_rcu_read_unlock_bp(); \
172 static inline lttng_ust_notrace \
173 void __tracepoint_register_##_provider##___##_name(char *name, \
174 void (*func)(void), void *data); \
176 void __tracepoint_register_##_provider##___##_name(char *name, \
177 void (*func)(void), void *data) \
179 __tracepoint_probe_register(name, func, data, \
180 __tracepoint_##_provider##___##_name.signature); \
182 static inline lttng_ust_notrace \
183 void __tracepoint_unregister_##_provider##___##_name(char *name, \
184 void (*func)(void), void *data); \
186 void __tracepoint_unregister_##_provider##___##_name(char *name, \
187 void (*func)(void), void *data) \
189 __tracepoint_probe_unregister(name, func, data); \
192 extern int __tracepoint_probe_register(const char *name
, void (*func
)(void),
193 void *data
, const char *signature
);
194 extern int __tracepoint_probe_unregister(const char *name
, void (*func
)(void),
198 * tracepoint dynamic linkage handling (callbacks). Hidden visibility:
199 * shared across objects in a module/main executable.
201 struct tracepoint_dlopen
{
202 void *liblttngust_handle
;
204 int (*tracepoint_register_lib
)(struct tracepoint
* const *tracepoints_start
,
205 int tracepoints_count
);
206 int (*tracepoint_unregister_lib
)(struct tracepoint
* const *tracepoints_start
);
208 void (*rcu_read_lock_sym_bp
)(void);
209 void (*rcu_read_unlock_sym_bp
)(void);
210 void *(*rcu_dereference_sym_bp
)(void *p
);
214 extern struct tracepoint_dlopen tracepoint_dlopen
;
216 #if defined(TRACEPOINT_DEFINE) || defined(TRACEPOINT_CREATE_PROBES)
219 * These weak symbols, the constructor, and destructor take care of
220 * registering only _one_ instance of the tracepoints per shared-ojbect
221 * (or for the whole main program).
223 int __tracepoint_registered
224 __attribute__((weak
, visibility("hidden")));
225 int __tracepoint_ptrs_registered
226 __attribute__((weak
, visibility("hidden")));
227 struct tracepoint_dlopen tracepoint_dlopen
228 __attribute__((weak
, visibility("hidden")));
230 static void lttng_ust_notrace
__attribute__((constructor
))
231 __tracepoints__init(void);
233 __tracepoints__init(void)
235 if (__tracepoint_registered
++)
238 if (!tracepoint_dlopen
.liblttngust_handle
)
239 tracepoint_dlopen
.liblttngust_handle
=
240 dlopen("liblttng-ust-tracepoint.so.0", RTLD_NOW
| RTLD_GLOBAL
);
241 if (!tracepoint_dlopen
.liblttngust_handle
)
243 tracepoint_dlopen
.tracepoint_register_lib
=
244 URCU_FORCE_CAST(int (*)(struct tracepoint
* const *, int),
245 dlsym(tracepoint_dlopen
.liblttngust_handle
,
246 "tracepoint_register_lib"));
247 tracepoint_dlopen
.tracepoint_unregister_lib
=
248 URCU_FORCE_CAST(int (*)(struct tracepoint
* const *),
249 dlsym(tracepoint_dlopen
.liblttngust_handle
,
250 "tracepoint_unregister_lib"));
252 tracepoint_dlopen
.rcu_read_lock_sym_bp
=
253 URCU_FORCE_CAST(void (*)(void),
254 dlsym(tracepoint_dlopen
.liblttngust_handle
,
255 "tp_rcu_read_lock_bp"));
256 tracepoint_dlopen
.rcu_read_unlock_sym_bp
=
257 URCU_FORCE_CAST(void (*)(void),
258 dlsym(tracepoint_dlopen
.liblttngust_handle
,
259 "tp_rcu_read_unlock_bp"));
260 tracepoint_dlopen
.rcu_dereference_sym_bp
=
261 URCU_FORCE_CAST(void *(*)(void *p
),
262 dlsym(tracepoint_dlopen
.liblttngust_handle
,
263 "tp_rcu_dereference_sym_bp"));
267 static void lttng_ust_notrace
__attribute__((destructor
))
268 __tracepoints__destroy(void);
270 __tracepoints__destroy(void)
274 if (--__tracepoint_registered
)
276 if (tracepoint_dlopen
.liblttngust_handle
&& !__tracepoint_ptrs_registered
) {
277 ret
= dlclose(tracepoint_dlopen
.liblttngust_handle
);
279 memset(&tracepoint_dlopen
, 0, sizeof(tracepoint_dlopen
));
285 #ifdef TRACEPOINT_DEFINE
288 * These weak symbols, the constructor, and destructor take care of
289 * registering only _one_ instance of the tracepoints per shared-ojbect
290 * (or for the whole main program).
292 extern struct tracepoint
* const __start___tracepoints_ptrs
[]
293 __attribute__((weak
, visibility("hidden")));
294 extern struct tracepoint
* const __stop___tracepoints_ptrs
[]
295 __attribute__((weak
, visibility("hidden")));
298 * When TRACEPOINT_PROBE_DYNAMIC_LINKAGE is defined, we do not emit a
299 * unresolved symbol that requires the provider to be linked in. When
300 * TRACEPOINT_PROBE_DYNAMIC_LINKAGE is not defined, we emit an
301 * unresolved symbol that depends on having the provider linked in,
302 * otherwise the linker complains. This deals with use of static
303 * libraries, ensuring that the linker does not remove the provider
304 * object from the executable.
306 #ifdef TRACEPOINT_PROBE_DYNAMIC_LINKAGE
307 #define _TRACEPOINT_UNDEFINED_REF(provider) NULL
308 #else /* TRACEPOINT_PROBE_DYNAMIC_LINKAGE */
309 #define _TRACEPOINT_UNDEFINED_REF(provider) &__tracepoint_provider_##provider
310 #endif /* TRACEPOINT_PROBE_DYNAMIC_LINKAGE */
313 * Note: to allow PIC code, we need to allow the linker to update the pointers
314 * in the __tracepoints_ptrs section.
315 * Therefore, this section is _not_ const (read-only).
317 #define _TP_EXTRACT_STRING(...) #__VA_ARGS__
319 #define _DEFINE_TRACEPOINT(_provider, _name, _args) \
320 extern int __tracepoint_provider_##_provider; \
321 static const char __tp_strtab_##_provider##___##_name[] \
322 __attribute__((section("__tracepoints_strings"))) = \
323 #_provider ":" #_name; \
324 struct tracepoint __tracepoint_##_provider##___##_name \
325 __attribute__((section("__tracepoints"))) = \
327 __tp_strtab_##_provider##___##_name, \
330 _TRACEPOINT_UNDEFINED_REF(_provider), \
331 _TP_EXTRACT_STRING(_args), \
333 static struct tracepoint * __tracepoint_ptr_##_provider##___##_name \
334 __attribute__((used, section("__tracepoints_ptrs"))) = \
335 &__tracepoint_##_provider##___##_name;
337 static void lttng_ust_notrace
__attribute__((constructor
))
338 __tracepoints__ptrs_init(void);
340 __tracepoints__ptrs_init(void)
342 if (__tracepoint_ptrs_registered
++)
344 if (!tracepoint_dlopen
.liblttngust_handle
)
345 tracepoint_dlopen
.liblttngust_handle
=
346 dlopen("liblttng-ust-tracepoint.so.0", RTLD_NOW
| RTLD_GLOBAL
);
347 if (!tracepoint_dlopen
.liblttngust_handle
)
349 tracepoint_dlopen
.tracepoint_register_lib(__start___tracepoints_ptrs
,
350 __stop___tracepoints_ptrs
-
351 __start___tracepoints_ptrs
);
354 static void lttng_ust_notrace
__attribute__((destructor
))
355 __tracepoints__ptrs_destroy(void);
357 __tracepoints__ptrs_destroy(void)
361 if (--__tracepoint_ptrs_registered
)
363 if (tracepoint_dlopen
.tracepoint_unregister_lib
)
364 tracepoint_dlopen
.tracepoint_unregister_lib(__start___tracepoints_ptrs
);
365 if (tracepoint_dlopen
.liblttngust_handle
&& !__tracepoint_registered
) {
366 ret
= dlclose(tracepoint_dlopen
.liblttngust_handle
);
368 memset(&tracepoint_dlopen
, 0, sizeof(tracepoint_dlopen
));
372 #else /* TRACEPOINT_DEFINE */
374 #define _DEFINE_TRACEPOINT(_provider, _name, _args)
376 #endif /* #else TRACEPOINT_DEFINE */
382 #endif /* _LTTNG_TRACEPOINT_H */
384 /* The following declarations must be outside re-inclusion protection. */
386 #ifndef TRACEPOINT_EVENT
389 * How to use the TRACEPOINT_EVENT macro:
393 * TRACEPOINT_EVENT(someproject_component, event_name,
395 * * TP_ARGS takes from 0 to 10 "type, field_name" pairs *
397 * TP_ARGS(int, arg0, void *, arg1, char *, string, size_t, strlen,
398 * long *, arg4, size_t, arg4_len),
400 * * TP_FIELDS describes the event payload layout in the trace *
403 * * Integer, printed in base 10 *
404 * ctf_integer(int, field_a, arg0)
406 * * Integer, printed with 0x base 16 *
407 * ctf_integer_hex(unsigned long, field_d, arg1)
409 * * Array Sequence, printed as UTF8-encoded array of bytes *
410 * ctf_array_text(char, field_b, string, FIXED_LEN)
411 * ctf_sequence_text(char, field_c, string, size_t, strlen)
413 * * String, printed as UTF8-encoded string *
414 * ctf_string(field_e, string)
416 * * Array sequence of signed integer values *
417 * ctf_array(long, field_f, arg4, FIXED_LEN4)
418 * ctf_sequence(long, field_g, arg4, size_t, arg4_len)
422 * More detailed explanation:
424 * The name of the tracepoint is expressed as a tuple with the provider
425 * and name arguments.
427 * The provider and name should be a proper C99 identifier.
428 * The "provider" and "name" MUST follow these rules to ensure no
429 * namespace clash occurs:
431 * For projects (applications and libraries) for which an entity
432 * specific to the project controls the source code and thus its
433 * tracepoints (typically with a scope larger than a single company):
436 * project_component, event
440 * Where "project" is the name of the project,
441 * "component" is the name of the project component (which may
442 * include several levels of sub-components, e.g.
443 * ...component_subcomponent_...) where the tracepoint is located
445 * "event" is the name of the tracepoint event.
447 * For projects issued from a single company wishing to advertise that
448 * the company controls the source code and thus the tracepoints, the
449 * "com_" prefix should be used:
452 * com_company_project_component, event
454 * com_company_project, event
456 * Where "company" is the name of the company,
457 * "project" is the name of the project,
458 * "component" is the name of the project component (which may
459 * include several levels of sub-components, e.g.
460 * ...component_subcomponent_...) where the tracepoint is located
462 * "event" is the name of the tracepoint event.
464 * the provider:event identifier is limited to 127 characters.
467 #define TRACEPOINT_EVENT(provider, name, args, fields) \
468 _DECLARE_TRACEPOINT(provider, name, _TP_PARAMS(args)) \
469 _DEFINE_TRACEPOINT(provider, name, _TP_PARAMS(args))
471 #define TRACEPOINT_EVENT_CLASS(provider, name, args, fields)
473 #define TRACEPOINT_EVENT_INSTANCE(provider, _template, name, args) \
474 _DECLARE_TRACEPOINT(provider, name, _TP_PARAMS(args)) \
475 _DEFINE_TRACEPOINT(provider, name, _TP_PARAMS(args))
477 #endif /* #ifndef TRACEPOINT_EVENT */
479 #ifndef TRACEPOINT_LOGLEVEL
482 * Tracepoint Loglevels
484 * Typical use of these loglevels:
486 * The loglevels go from 0 to 14. Higher numbers imply the most
487 * verbosity (higher event throughput expected.
489 * Loglevels 0 through 6, and loglevel 14, match syslog(3) loglevels
490 * semantic. Loglevels 7 through 13 offer more fine-grained selection of
497 * action must be taken immediately
500 * critical conditions
509 * normal, but significant, condition
512 * informational message
514 * TRACE_DEBUG_SYSTEM 7
515 * debug information with system-level scope (set of programs)
517 * TRACE_DEBUG_PROGRAM 8
518 * debug information with program-level scope (set of processes)
520 * TRACE_DEBUG_PROCESS 9
521 * debug information with process-level scope (set of modules)
523 * TRACE_DEBUG_MODULE 10
524 * debug information with module (executable/library) scope (set of units)
526 * TRACE_DEBUG_UNIT 11
527 * debug information with compilation unit scope (set of functions)
529 * TRACE_DEBUG_FUNCTION 12
530 * debug information with function-level scope
532 * TRACE_DEBUG_LINE 13
533 * debug information with line-level scope (TRACEPOINT_EVENT default)
536 * debug-level message (trace_printf default)
538 * Declare tracepoint loglevels for tracepoints. A TRACEPOINT_EVENT
539 * should be declared prior to the the TRACEPOINT_LOGLEVEL for a given
540 * tracepoint name. The first field is the provider name, the second
541 * field is the name of the tracepoint, the third field is the loglevel
544 * TRACEPOINT_LOGLEVEL(< [com_company_]project[_component] >, < event >,
547 * The TRACEPOINT_PROVIDER must be already declared before declaring a
548 * TRACEPOINT_LOGLEVEL.
559 TRACE_DEBUG_SYSTEM
= 7,
560 TRACE_DEBUG_PROGRAM
= 8,
561 TRACE_DEBUG_PROCESS
= 9,
562 TRACE_DEBUG_MODULE
= 10,
563 TRACE_DEBUG_UNIT
= 11,
564 TRACE_DEBUG_FUNCTION
= 12,
565 TRACE_DEBUG_LINE
= 13,
569 #define TRACEPOINT_LOGLEVEL(provider, name, loglevel)
571 #endif /* #ifndef TRACEPOINT_LOGLEVEL */
573 #ifndef TRACEPOINT_MODEL_EMF_URI
575 #define TRACEPOINT_MODEL_EMF_URI(provider, name, uri)
577 #endif /* #ifndef TRACEPOINT_MODEL_EMF_URI */