X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=include%2Fust%2Ftracepoint.h;h=e39a3849bc8b928bc7aaff2e5d4f5192eb300a5b;hb=d4419b81b243bc3a6bdd4a09b3ca2216d044a1c7;hp=1d286a0ff995432bb16e047fb78fc09d6ab5a05b;hpb=0222e1213f196b66cbc08cd29093aca4a28e9ffb;p=lttng-ust.git diff --git a/include/ust/tracepoint.h b/include/ust/tracepoint.h index 1d286a0f..e39a3849 100644 --- a/include/ust/tracepoint.h +++ b/include/ust/tracepoint.h @@ -2,14 +2,14 @@ #define _UST_TRACEPOINT_H /* - * Copyright (C) 2008 Mathieu Desnoyers + * Copyright (C) 2008-2011 Mathieu Desnoyers * Copyright (C) 2009 Pierre-Marc Fournier * Copyright (C) 2009 Steven Rostedt * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. + * License as published by the Free Software Foundation; + * version 2.1 of the License. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of @@ -25,37 +25,29 @@ * Ported to userspace by Pierre-Marc Fournier. */ -#define _LGPL_SOURCE #include -#include -#include +#include -struct module; -struct tracepoint; +#ifdef __cplusplus +extern "C" { +#endif -struct probe { +struct tracepoint_probe { void *func; void *data; }; struct tracepoint { const char *name; /* Tracepoint name */ - DEFINE_IMV(char, state); /* State. */ - struct probe *probes; -} __attribute__((aligned(32))); /* - * Aligned on 32 bytes because it is - * globally visible and gcc happily - * align these on the structure size. - * Keep in sync with vmlinux.lds.h. - */ - -#define PARAMS(args...) args - -#define TP_PROTO(args...) args -#define TP_ARGS(args...) args + char state; /* State. */ + struct tracepoint_probe *probes; +}; -#define CONFIG_TRACEPOINTS -#ifdef CONFIG_TRACEPOINTS +/* + * Tracepoints should be added to the instrumented code using the + * "tracepoint()" macro. + */ +#define tracepoint(name, args...) __trace_##name(args) /* * it_func[0] is never NULL because there is at least one element in the array @@ -63,194 +55,228 @@ struct tracepoint { */ #define __DO_TRACE(tp, proto, args) \ do { \ - struct probe *it_probe_ptr; \ - void *it_func; \ - void *__data; \ + struct tracepoint_probe *__tp_it_probe_ptr; \ + void *__tp_it_func; \ + void *__tp_cb_data; \ \ rcu_read_lock(); \ - it_probe_ptr = rcu_dereference((tp)->probes); \ - if (it_probe_ptr) { \ + __tp_it_probe_ptr = rcu_dereference((tp)->probes); \ + if (__tp_it_probe_ptr) { \ do { \ - it_func = (it_probe_ptr)->func; \ - __data = (it_probe_ptr)->data; \ - ((void(*)(proto))(it_func))(args); \ - } while ((++it_probe_ptr)->func); \ + __tp_it_func = __tp_it_probe_ptr->func; \ + __tp_cb_data = __tp_it_probe_ptr->data; \ + URCU_FORCE_CAST(void(*)(proto), __tp_it_func)(args); \ + } while ((++__tp_it_probe_ptr)->func); \ } \ rcu_read_unlock(); \ } while (0) -#define __CHECK_TRACE(name, generic, proto, args) \ +#define TP_PARAMS(args...) args +#define TP_PROTO(args...) args +#define TP_ARGS(args...) args + +#define __CHECK_TRACE(name, proto, args) \ do { \ - if (!generic) { \ - if (unlikely(imv_read(__tracepoint_##name.state))) \ - __DO_TRACE(&__tracepoint_##name, \ - TP_PROTO(proto), TP_ARGS(args)); \ - } else { \ - if (unlikely(_imv_read(__tracepoint_##name.state))) \ - __DO_TRACE(&__tracepoint_##name, \ - TP_PROTO(proto), TP_ARGS(args)); \ - } \ + if (caa_unlikely(__tracepoint_##name.state)) \ + __DO_TRACE(&__tracepoint_##name, \ + TP_PROTO(proto), TP_ARGS(args)); \ } while (0) /* * Make sure the alignment of the structure in the __tracepoints section will * not add unwanted padding between the beginning of the section and the * structure. Force alignment to the same alignment as the section start. - * - * The "generic" argument, passed to the declared __trace_##name inline - * function controls which tracepoint enabling mechanism must be used. - * If generic is true, a variable read is used. - * If generic is false, immediate values are used. */ -#define __DECLARE_TRACE(name, proto, args, data_proto, data_args) \ +#define __DECLARE_TRACEPOINT(name, proto, args, data_proto, data_args) \ extern struct tracepoint __tracepoint_##name; \ - static inline void trace_##name(proto) \ - { \ - __CHECK_TRACE(name, 0, TP_PROTO(data_proto), \ - TP_ARGS(data_args)); \ - } \ - static inline void _trace_##name(proto) \ + static inline void __trace_##name(proto) \ { \ - __CHECK_TRACE(name, 1, TP_PROTO(data_proto), \ + __CHECK_TRACE(name, TP_PROTO(data_proto), \ TP_ARGS(data_args)); \ } \ static inline int \ - register_trace_##name(void (*probe)(data_proto), void *data) \ + __register_trace_##name(void (*probe)(data_proto), void *data) \ { \ - return tracepoint_probe_register(#name, (void *)probe, \ + return __tracepoint_probe_register(#name, (void *)probe,\ data); \ - \ } \ static inline int \ - unregister_trace_##name(void (*probe)(data_proto), void *data) \ + __unregister_trace_##name(void (*probe)(data_proto), void *data)\ { \ - return tracepoint_probe_unregister(#name, (void *)probe, \ + return __tracepoint_probe_unregister(#name, (void *)probe, \ data); \ } -#define DEFINE_TRACE_FN(name, reg, unreg) \ +/* + * The need for the _DECLARE_TRACEPOINT_NOARGS() is to handle the prototype + * (void). "void" is a special value in a function prototype and can + * not be combined with other arguments. Since the DECLARE_TRACEPOINT() + * macro adds a data element at the beginning of the prototype, + * we need a way to differentiate "(void *data, proto)" from + * "(void *data, void)". The second prototype is invalid. + * + * DECLARE_TRACEPOINT_NOARGS() passes "void" as the tracepoint prototype + * and "void *__tp_cb_data" as the callback prototype. + * + * DECLARE_TRACEPOINT() passes "proto" as the tracepoint protoype and + * "void *__tp_cb_data, proto" as the callback prototype. + */ +#define _DECLARE_TRACEPOINT_NOARGS(name) \ + __DECLARE_TRACEPOINT(name, void, , void *__tp_cb_data, __tp_cb_data) + +#define _DECLARE_TRACEPOINT(name, proto, args) \ + __DECLARE_TRACEPOINT(name, TP_PARAMS(proto), TP_PARAMS(args), \ + TP_PARAMS(void *__tp_cb_data, proto), \ + TP_PARAMS(__tp_cb_data, args)) + +/* + * __tracepoints_ptrs section is not const (read-only) to let the linker update + * the pointer, allowing PIC code. + */ +#define _DEFINE_TRACEPOINT(name) \ static const char __tpstrtab_##name[] \ __attribute__((section("__tracepoints_strings"))) = #name; \ struct tracepoint __tracepoint_##name \ - __attribute__((section("__tracepoints"), aligned(32))) = \ - { __tpstrtab_##name, 0, NULL } - -#define DEFINE_TRACE(name) \ - DEFINE_TRACE_FN(name, NULL, NULL); - -extern void tracepoint_update_probe_range(struct tracepoint *begin, - struct tracepoint *end); - -#else /* !CONFIG_TRACEPOINTS */ -#define __DECLARE_TRACE(name, proto, args) \ - static inline void trace_##name(proto) \ - { } \ - static inline void _trace_##name(proto) \ - { } \ - static inline int register_trace_##name(void (*probe)(proto)) \ - { \ - return -ENOSYS; \ - } \ - static inline int unregister_trace_##name(void (*probe)(proto)) \ - { \ - return -ENOSYS; \ - } + __attribute__((section("__tracepoints"))) = \ + { __tpstrtab_##name, 0, NULL }; \ + static struct tracepoint * __tracepoint_ptr_##name \ + __attribute__((used, section("__tracepoints_ptrs"))) = \ + &__tracepoint_##name; -#define DEFINE_TRACE(name) -#define EXPORT_TRACEPOINT_SYMBOL_GPL(name) -#define EXPORT_TRACEPOINT_SYMBOL(name) -static inline void tracepoint_update_probe_range(struct tracepoint *begin, - struct tracepoint *end) -{ } -#endif /* CONFIG_TRACEPOINTS */ - -#define DECLARE_TRACE(name, proto, args) \ - __DECLARE_TRACE(name, PARAMS(proto), PARAMS(args), \ - PARAMS(void *__data, proto), \ - PARAMS(__data, args)) +#define __register_tracepoint(name, probe, data) \ + __register_trace_##name(probe, data) +#define __unregister_tracepoint(name, probe, data) \ + __unregister_trace_##name(probe, data) /* * Connect a probe to a tracepoint. - * Internal API, should not be used directly. + * Internal API. */ -extern int tracepoint_probe_register(const char *name, void *probe, void *data); +extern +int __tracepoint_probe_register(const char *name, void *probe, void *data); /* * Disconnect a probe from a tracepoint. - * Internal API, should not be used directly. + * Internal API. */ -extern int tracepoint_probe_unregister(const char *name, void *probe, void *data); - -extern int tracepoint_probe_register_noupdate(const char *name, void *probe, - void *data); -extern int tracepoint_probe_unregister_noupdate(const char *name, void *probe, - void *data); -extern void tracepoint_probe_update_all(void); - -struct tracepoint_iter { -//ust// struct module *module; - struct tracepoint_lib *lib; - struct tracepoint *tracepoint; -}; +extern +int __tracepoint_probe_unregister(const char *name, void *probe, void *data); -extern void tracepoint_iter_start(struct tracepoint_iter *iter); -extern void tracepoint_iter_next(struct tracepoint_iter *iter); -extern void tracepoint_iter_stop(struct tracepoint_iter *iter); -extern void tracepoint_iter_reset(struct tracepoint_iter *iter); -extern int tracepoint_get_iter_range(struct tracepoint **tracepoint, - struct tracepoint *begin, struct tracepoint *end); +extern +int tracepoint_register_lib(struct tracepoint * const *tracepoints_start, + int tracepoints_count); +extern +int tracepoint_unregister_lib(struct tracepoint * const *tracepoints_start); /* - * tracepoint_synchronize_unregister must be called between the last tracepoint - * probe unregistration and the end of module exit to make sure there is no - * caller executing a probe when it is freed. + * These weak symbols, the constructor, and destructor take care of + * registering only _one_ instance of the tracepoints per shared-ojbect + * (or for the whole main program). */ -static inline void tracepoint_synchronize_unregister(void) +extern struct tracepoint * const __start___tracepoints_ptrs[] + __attribute__((weak, visibility("hidden"))); +extern struct tracepoint * const __stop___tracepoints_ptrs[] + __attribute__((weak, visibility("hidden"))); +int __tracepoint_registered + __attribute__((weak, visibility("hidden"))); + +static void __attribute__((constructor)) __tracepoints__init(void) { -//ust// synchronize_sched(); + if (__tracepoint_registered++) + return; + tracepoint_register_lib(__start___tracepoints_ptrs, + __stop___tracepoints_ptrs - + __start___tracepoints_ptrs); } -struct tracepoint_lib { - struct tracepoint *tracepoints_start; - int tracepoints_count; - struct cds_list_head list; -}; - -extern int tracepoint_register_lib(struct tracepoint *tracepoints_start, - int tracepoints_count); -extern int tracepoint_unregister_lib(struct tracepoint *tracepoints_start); - -#define TRACEPOINT_LIB \ - extern struct tracepoint __start___tracepoints[] __attribute__((weak, visibility("hidden"))); \ - extern struct tracepoint __stop___tracepoints[] __attribute__((weak, visibility("hidden"))); \ - static void __attribute__((constructor)) __tracepoints__init(void) \ - { \ - tracepoint_register_lib(__start___tracepoints, \ - (((long)__stop___tracepoints)-((long)__start___tracepoints))/sizeof(struct tracepoint)); \ - } \ - \ - static void __attribute__((destructor)) __tracepoints__destroy(void) \ - { \ - tracepoint_unregister_lib(__start___tracepoints); \ - } - +static void __attribute__((destructor)) __tracepoints__destroy(void) +{ + if (--__tracepoint_registered) + return; + tracepoint_unregister_lib(__start___tracepoints_ptrs); +} -#ifndef TRACE_EVENT +#ifndef TRACEPOINT_EVENT /* - * For use with the TRACE_EVENT macro: + * Usage of the TRACEPOINT_EVENT macro: + * + * In short, an example: + * + * TRACEPOINT_EVENT(< [com_company_]project_[component_]event >, + * TP_PROTO(int arg0, void *arg1, char *string, size_t strlen, + * long *arg4, size_t arg4_len), + * TP_ARGS(arg0, arg1, string, strlen, arg4, arg4_len), + * TP_FIELDS( + * + * * Integer, printed in base 10 * + * ctf_integer(int, field_a, arg0) + * + * * Integer, printed with 0x base 16 * + * ctf_integer_hex(unsigned long, field_d, arg1) + * + * * Array Sequence, printed as UTF8-encoded array of bytes * + * ctf_array_text(char, field_b, string, FIXED_LEN) + * ctf_sequence_text(char, field_c, string, size_t, strlen) * - * We define a tracepoint, its arguments, its printf format - * and its 'fast binary record' layout. + * * String, printed as UTF8-encoded string * + * ctf_string(field_e, string) * - * Firstly, name your tracepoint via TRACE_EVENT(name : the - * 'subsystem_event' notation is fine. + * * Array sequence of signed integer values * + * ctf_array(long, field_f, arg4, FIXED_LEN4) + * ctf_sequence(long, field_g, arg4, size_t, arg4_len) + * ) + * ) * - * Think about this whole construct as the - * 'trace_sched_switch() function' from now on. + * In more detail: * + * We define a tracepoint, its arguments, and its 'fast binary record' + * layout. * - * TRACE_EVENT(sched_switch, + * Firstly, name your tracepoint via TRACEPOINT_EVENT(name, + * + * The name should be a proper C99 identifier. + * The "name" MUST follow these rules to ensure no namespace clash + * occurs: + * + * For projects (applications and libraries) for which an entity + * specific to the project controls the source code and thus its + * tracepoints (typically with a scope larger than a single company): + * + * either: + * project_component_event + * or: + * project_event + * + * Where "project" is the name of the project, + * "component" is the name of the project component (which may + * include several levels of sub-components, e.g. + * ...component_subcomponent_...) where the tracepoint is located + * (optional), + * "event" is the name of the tracepoint event. + * + * For projects issued from a single company wishing to advertise that + * the company controls the source code and thus the tracepoints, the + * "com_" prefix should be used: + * + * either: + * com_company_project_component_event + * or: + * com_company_project_event + * + * Where "company" is the name of the company, + * "project" is the name of the project, + * "component" is the name of the project component (which may + * include several levels of sub-components, e.g. + * ...component_subcomponent_...) where the tracepoint is located + * (optional), + * "event" is the name of the tracepoint event. + * + * + * As an example, let's consider a user-space application "someproject" + * that would have an internal thread scheduler: + * + * TRACEPOINT_EVENT(someproject_sched_switch, * * * * * A function has a regular function arguments @@ -270,143 +296,128 @@ extern int tracepoint_unregister_lib(struct tracepoint *tracepoints_start); * * * * * Fast binary tracing: define the trace record via - * * TP_STRUCT__entry(). You can think about it like a + * * TP_FIELDS(). You can think about it like a * * regular C structure local variable definition. * * * * This is how the trace record is structured and will * * be saved into the ring buffer. These are the fields * * that will be exposed to readers. * * - * * The declared 'local variable' is called '__entry' + * * ctf_integer(pid_t, prev_pid, prev->pid) is equivalent + * * to a standard declaraton: * * - * * __field(pid_t, prev_prid) is equivalent to a standard declariton: + * * pid_t prev_pid; * * - * * pid_t prev_pid; + * * followed by an assignment: * * - * * __array(char, prev_comm, TASK_COMM_LEN) is equivalent to: + * * prev_pid = prev->pid; * * - * * char prev_comm[TASK_COMM_LEN]; + * * ctf_array(char, prev_comm, prev->comm, TASK_COMM_LEN) is + * * equivalent to: * * - * - * TP_STRUCT__entry( - * __array( char, prev_comm, TASK_COMM_LEN ) - * __field( pid_t, prev_pid ) - * __field( int, prev_prio ) - * __array( char, next_comm, TASK_COMM_LEN ) - * __field( pid_t, next_pid ) - * __field( int, next_prio ) - * ), - * + * * char prev_comm[TASK_COMM_LEN]; * * - * * Assign the entry into the trace record, by embedding - * * a full C statement block into TP_fast_assign(). You - * * can refer to the trace record as '__entry' - - * * otherwise you can put arbitrary C code in here. + * * followed by an assignment: * * - * * Note: this C code will execute every time a trace event - * * happens, on an active tracepoint. + * * memcpy(prev_comm, prev->comm, TASK_COMM_LEN); * * * - * TP_fast_assign( - * memcpy(__entry->next_comm, next->comm, TASK_COMM_LEN); - * __entry->prev_pid = prev->pid; - * __entry->prev_prio = prev->prio; - * memcpy(__entry->prev_comm, prev->comm, TASK_COMM_LEN); - * __entry->next_pid = next->pid; - * __entry->next_prio = next->prio; + * TP_FIELDS( + * ctf_array(char, prev_comm, prev->comm, TASK_COMM_LEN) + * ctf_integer(pid_t, prev_pid, prev->pid) + * ctf_integer(int, prev_prio, prev->prio) + * ctf_array(char, next_comm, next->comm, TASK_COMM_LEN) + * ctf_integer(pid_t, next_pid, next->pid) + * ctf_integer(int, next_prio, next->prio) * ) + * ) * - * * - * * Formatted output of a trace record via TP_printf(). - * * This is how the tracepoint will appear under debugging - * * of tracepoints. - * * - * * (raw-binary tracing wont actually perform this step.) - * * - * - * TP_printf("task %s:%d [%d] ==> %s:%d [%d]", - * __entry->prev_comm, __entry->prev_pid, __entry->prev_prio, - * __entry->next_comm, __entry->next_pid, __entry->next_prio), - * - * ); + * Do _NOT_ add comma (,) nor semicolon (;) after the TRACEPOINT_EVENT + * declaration. * - * This macro construct is thus used for the regular printf format - * tracing setup. - * - * A set of (un)registration functions can be passed to the variant - * TRACE_EVENT_FN to perform any (un)registration work. + * The TRACEPOINT_SYSTEM must be defined when declaring a + * TRACEPOINT_EVENT. See ust/tracepoint-event.h for information about + * usage of other macros controlling TRACEPOINT_EVENT. */ -struct trace_event { - const char *name; - int (*regfunc)(void *data); - int (*unregfunc)(void *data); -} __attribute__((aligned(32))); - -struct trace_event_lib { - struct trace_event *trace_events_start; - int trace_events_count; - struct cds_list_head list; -}; - -struct trace_event_iter { - struct trace_event_lib *lib; - struct trace_event *trace_event; -}; +#define TRACEPOINT_EVENT(name, proto, args, fields) \ + _DECLARE_TRACEPOINT(name, TP_PARAMS(proto), TP_PARAMS(args)) -extern void lock_trace_events(void); -extern void unlock_trace_events(void); +#define TRACEPOINT_EVENT_CLASS(name, proto, args, fields) +#define TRACEPOINT_EVENT_INSTANCE(template, name, proto, args) \ + _DECLARE_TRACEPOINT(name, TP_PARAMS(proto), TP_PARAMS(args)) -extern void trace_event_iter_start(struct trace_event_iter *iter); -extern void trace_event_iter_next(struct trace_event_iter *iter); -extern void trace_event_iter_reset(struct trace_event_iter *iter); - -extern int trace_event_get_iter_range(struct trace_event **trace_event, - struct trace_event *begin, - struct trace_event *end); +/* + * Declaration of tracepoints that take 0 argument. + */ +#define TRACEPOINT_EVENT_NOARGS(name, fields) \ + _DECLARE_TRACEPOINT_NOARGS(name) -extern void trace_event_update_process(void); -extern int is_trace_event_enabled(const char *channel, const char *name); +#define TRACEPOINT_EVENT_CLASS_NOARGS(name, fields) +#define TRACEPOINT_EVENT_INSTANCE_NOARGS(template, name) \ + _DECLARE_TRACEPOINT_NOARGS(name) -extern int trace_event_register_lib(struct trace_event *start_trace_events, - int trace_event_count); +#endif /* #ifndef TRACEPOINT_EVENT */ -extern int trace_event_unregister_lib(struct trace_event *start_trace_events); +#ifndef TRACEPOINT_LOGLEVEL -#define TRACE_EVENT_LIB \ - extern struct trace_event __start___trace_events[] \ - __attribute__((weak, visibility("hidden"))); \ - extern struct trace_event __stop___trace_events[] \ - __attribute__((weak, visibility("hidden"))); \ - static void __attribute__((constructor)) \ - __trace_events__init(void) \ - { \ - long trace_event_count =((long)__stop___trace_events- \ - (long)__start___trace_events) \ - /sizeof(struct trace_event); \ - trace_event_register_lib(__start___trace_events, \ - trace_event_count); \ - } \ - \ - static void __attribute__((destructor)) \ - __trace_event__destroy(void) \ - { \ - trace_event_unregister_lib(__start___trace_events); \ - } - -#define DECLARE_TRACE_EVENT_CLASS(name, proto, args, tstruct, assign, print) -#define DEFINE_TRACE_EVENT(template, name, proto, args) \ - DECLARE_TRACE(name, PARAMS(proto), PARAMS(args)) -#define DEFINE_TRACE_EVENT_PRINT(template, name, proto, args, print) \ - DECLARE_TRACE(name, PARAMS(proto), PARAMS(args)) +/* + * Tracepoint Loglevel Declaration Facility + * + * This is a place-holder the tracepoint loglevel declaration, + * overridden by the tracer implementation. + * + * Typical use of these loglevels: + * + * 1) Declare the mapping between loglevel names and an integer values + * within TRACEPOINT_LOGLEVEL_ENUM, using TP_LOGLEVEL for each tuple. + * Do _NOT_ add comma (,) nor semicolon (;) between the + * TRACEPOINT_LOGLEVEL_ENUM entries. Do _NOT_ add comma (,) nor + * semicolon (;) after the TRACEPOINT_LOGLEVEL_ENUM declaration. The + * name should be a proper C99 identifier. + * + * TRACEPOINT_LOGLEVEL_ENUM( + * TP_LOGLEVEL( < loglevel_name >, < value > ) + * TP_LOGLEVEL( < loglevel_name >, < value > ) + * ... + * ) + * + * e.g.: + * + * TRACEPOINT_LOGLEVEL_ENUM( + * TP_LOGLEVEL(LOG_EMERG, 0) + * TP_LOGLEVEL(LOG_ALERT, 1) + * TP_LOGLEVEL(LOG_CRIT, 2) + * TP_LOGLEVEL(LOG_ERR, 3) + * TP_LOGLEVEL(LOG_WARNING, 4) + * TP_LOGLEVEL(LOG_NOTICE, 5) + * TP_LOGLEVEL(LOG_INFO, 6) + * TP_LOGLEVEL(LOG_DEBUG, 7) + * ) + * + * 2) Then, declare tracepoint loglevels for tracepoints. A + * TRACEPOINT_EVENT should be declared prior to the the + * TRACEPOINT_LOGLEVEL for a given tracepoint name. The first field + * is the name of the tracepoint, the second field is the loglevel + * name. + * + * TRACEPOINT_LOGLEVEL(< [com_company_]project_[component_]event >, + * < loglevel_name >) + * + * The TRACEPOINT_SYSTEM must be defined when declaring a + * TRACEPOINT_LOGLEVEL_ENUM and TRACEPOINT_LOGLEVEL. The tracepoint + * loglevel enumeration apply to the entire TRACEPOINT_SYSTEM. Only one + * tracepoint loglevel enumeration should be declared per tracepoint + * system. + */ -#define TRACE_EVENT(name, proto, args, struct, assign, print) \ - DECLARE_TRACE(name, PARAMS(proto), PARAMS(args)) -#define TRACE_EVENT_FN(name, proto, args, struct, \ - assign, print, reg, unreg) \ - DECLARE_TRACE(name, PARAMS(proto), PARAMS(args)) +#define TRACEPOINT_LOGLEVEL_ENUM() +#define TRACEPOINT_LOGLEVEL(name, loglevel) -#endif /* ifdef TRACE_EVENT (see note above) */ +#endif /* #ifndef TRACEPOINT_LOGLEVEL */ +#ifdef __cplusplus +} +#endif #endif /* _UST_TRACEPOINT_H */