projects
/
lttng-ust.git
/ blobdiff
commit
grep
author
committer
pickaxe
?
search:
re
summary
|
shortlog
|
log
|
commit
|
commitdiff
|
tree
raw
|
inline
| side by side
Implement tracelog API
[lttng-ust.git]
/
include
/
lttng
/
tracepoint.h
diff --git
a/include/lttng/tracepoint.h
b/include/lttng/tracepoint.h
index 0327c11dead59e3f0894726b76f4f15120923088..1734c1b7ac8d6c0a5aaedcc9c5e9c4f3db8effc4 100644
(file)
--- a/
include/lttng/tracepoint.h
+++ b/
include/lttng/tracepoint.h
@@
-44,11
+44,17
@@
extern "C" {
#endif
extern "C" {
#endif
+#define tracepoint_enabled(provider, name) \
+ caa_unlikely(__tracepoint_##provider##___##name.state)
+
+#define do_tracepoint(provider, name, ...) \
+ __tracepoint_cb_##provider##___##name(__VA_ARGS__)
+
#define tracepoint(provider, name, ...) \
do { \
STAP_PROBEV(provider, name, ## __VA_ARGS__); \
#define tracepoint(provider, name, ...) \
do { \
STAP_PROBEV(provider, name, ## __VA_ARGS__); \
- if (
caa_unlikely(__tracepoint_##provider##___##name.state))
\
-
__tracepoint_cb_##provider##___##name(__VA_ARGS__);
\
+ if (
tracepoint_enabled(provider, name))
\
+
do_tracepoint(provider, name, __VA_ARGS__);
\
} while (0)
#define TP_ARGS(...) __VA_ARGS__
} while (0)
#define TP_ARGS(...) __VA_ARGS__
@@
-145,14
+151,19
@@
extern "C" {
#define _TP_ARGS_DATA_VAR(...) _TP_DATA_VAR_N(_TP_NARGS(0, ##__VA_ARGS__), ##__VA_ARGS__)
#define _TP_PARAMS(...) __VA_ARGS__
#define _TP_ARGS_DATA_VAR(...) _TP_DATA_VAR_N(_TP_NARGS(0, ##__VA_ARGS__), ##__VA_ARGS__)
#define _TP_PARAMS(...) __VA_ARGS__
+/*
+ * The tracepoint cb is marked always inline so we can distinguish
+ * between caller's ip addresses within the probe using the return
+ * address.
+ */
#define _DECLARE_TRACEPOINT(_provider, _name, ...) \
#define _DECLARE_TRACEPOINT(_provider, _name, ...) \
-extern struct
tracepoint __tracepoint_##_provider##___##_name;
\
-static inline
lttng_ust_notrace
\
+extern struct
lttng_ust_tracepoint __tracepoint_##_provider##___##_name;
\
+static inline
__attribute__((always_inline, unused)) lttng_ust_notrace
\
void __tracepoint_cb_##_provider##___##_name(_TP_ARGS_PROTO(__VA_ARGS__)); \
void __tracepoint_cb_##_provider##___##_name(_TP_ARGS_PROTO(__VA_ARGS__)); \
-static
inline
\
+static
\
void __tracepoint_cb_##_provider##___##_name(_TP_ARGS_PROTO(__VA_ARGS__)) \
{ \
void __tracepoint_cb_##_provider##___##_name(_TP_ARGS_PROTO(__VA_ARGS__)) \
{ \
- struct
tracepoint_probe *__tp_probe;
\
+ struct
lttng_ust_tracepoint_probe *__tp_probe;
\
\
if (caa_unlikely(!TP_RCU_LINK_TEST())) \
return; \
\
if (caa_unlikely(!TP_RCU_LINK_TEST())) \
return; \
@@
-161,7
+172,7
@@
void __tracepoint_cb_##_provider##___##_name(_TP_ARGS_PROTO(__VA_ARGS__)) \
if (caa_unlikely(!__tp_probe)) \
goto end; \
do { \
if (caa_unlikely(!__tp_probe)) \
goto end; \
do { \
- void (*__tp_cb)(void) = __tp_probe->func;
\
+ void (*__tp_cb)(void) = __tp_probe->func; \
void *__tp_data = __tp_probe->data; \
\
URCU_FORCE_CAST(void (*)(_TP_ARGS_DATA_PROTO(__VA_ARGS__)), __tp_cb) \
void *__tp_data = __tp_probe->data; \
\
URCU_FORCE_CAST(void (*)(_TP_ARGS_DATA_PROTO(__VA_ARGS__)), __tp_cb) \
@@
-199,12
+210,12
@@
extern int __tracepoint_probe_unregister(const char *name, void (*func)(void),
* tracepoint dynamic linkage handling (callbacks). Hidden visibility:
* shared across objects in a module/main executable.
*/
* tracepoint dynamic linkage handling (callbacks). Hidden visibility:
* shared across objects in a module/main executable.
*/
-struct tracepoint_dlopen {
+struct
lttng_ust_
tracepoint_dlopen {
void *liblttngust_handle;
void *liblttngust_handle;
- int (*tracepoint_register_lib)(struct tracepoint * const *tracepoints_start,
+ int (*tracepoint_register_lib)(struct
lttng_ust_
tracepoint * const *tracepoints_start,
int tracepoints_count);
int tracepoints_count);
- int (*tracepoint_unregister_lib)(struct tracepoint * const *tracepoints_start);
+ int (*tracepoint_unregister_lib)(struct
lttng_ust_
tracepoint * const *tracepoints_start);
#ifndef _LGPL_SOURCE
void (*rcu_read_lock_sym_bp)(void);
void (*rcu_read_unlock_sym_bp)(void);
#ifndef _LGPL_SOURCE
void (*rcu_read_lock_sym_bp)(void);
void (*rcu_read_unlock_sym_bp)(void);
@@
-212,7
+223,7
@@
struct tracepoint_dlopen {
#endif
};
#endif
};
-extern struct tracepoint_dlopen tracepoint_dlopen;
+extern struct
lttng_ust_
tracepoint_dlopen tracepoint_dlopen;
#if defined(TRACEPOINT_DEFINE) || defined(TRACEPOINT_CREATE_PROBES)
#if defined(TRACEPOINT_DEFINE) || defined(TRACEPOINT_CREATE_PROBES)
@@
-225,7
+236,7
@@
int __tracepoint_registered
__attribute__((weak, visibility("hidden")));
int __tracepoint_ptrs_registered
__attribute__((weak, visibility("hidden")));
__attribute__((weak, visibility("hidden")));
int __tracepoint_ptrs_registered
__attribute__((weak, visibility("hidden")));
-struct tracepoint_dlopen tracepoint_dlopen
+struct
lttng_ust_
tracepoint_dlopen tracepoint_dlopen
__attribute__((weak, visibility("hidden")));
#ifndef _LGPL_SOURCE
__attribute__((weak, visibility("hidden")));
#ifndef _LGPL_SOURCE
@@
-307,9
+318,9
@@
__tracepoints__destroy(void)
* registering only _one_ instance of the tracepoints per shared-ojbect
* (or for the whole main program).
*/
* registering only _one_ instance of the tracepoints per shared-ojbect
* (or for the whole main program).
*/
-extern struct tracepoint * const __start___tracepoints_ptrs[]
+extern struct
lttng_ust_
tracepoint * const __start___tracepoints_ptrs[]
__attribute__((weak, visibility("hidden")));
__attribute__((weak, visibility("hidden")));
-extern struct tracepoint * const __stop___tracepoints_ptrs[]
+extern struct
lttng_ust_
tracepoint * const __stop___tracepoints_ptrs[]
__attribute__((weak, visibility("hidden")));
/*
__attribute__((weak, visibility("hidden")));
/*
@@
-339,7
+350,7
@@
extern struct tracepoint * const __stop___tracepoints_ptrs[]
static const char __tp_strtab_##_provider##___##_name[] \
__attribute__((section("__tracepoints_strings"))) = \
#_provider ":" #_name; \
static const char __tp_strtab_##_provider##___##_name[] \
__attribute__((section("__tracepoints_strings"))) = \
#_provider ":" #_name; \
- struct
tracepoint __tracepoint_##_provider##___##_name
\
+ struct
lttng_ust_tracepoint __tracepoint_##_provider##___##_name
\
__attribute__((section("__tracepoints"))) = \
{ \
__tp_strtab_##_provider##___##_name, \
__attribute__((section("__tracepoints"))) = \
{ \
__tp_strtab_##_provider##___##_name, \
@@
-347,8
+358,10
@@
extern struct tracepoint * const __stop___tracepoints_ptrs[]
NULL, \
_TRACEPOINT_UNDEFINED_REF(_provider), \
_TP_EXTRACT_STRING(_args), \
NULL, \
_TRACEPOINT_UNDEFINED_REF(_provider), \
_TP_EXTRACT_STRING(_args), \
+ { }, \
}; \
}; \
- static struct tracepoint * __tracepoint_ptr_##_provider##___##_name \
+ static struct lttng_ust_tracepoint * \
+ __tracepoint_ptr_##_provider##___##_name \
__attribute__((used, section("__tracepoints_ptrs"))) = \
&__tracepoint_##_provider##___##_name;
__attribute__((used, section("__tracepoints_ptrs"))) = \
&__tracepoint_##_provider##___##_name;
@@
-365,11
+378,11
@@
__tracepoints__ptrs_init(void)
if (!tracepoint_dlopen.liblttngust_handle)
return;
tracepoint_dlopen.tracepoint_register_lib =
if (!tracepoint_dlopen.liblttngust_handle)
return;
tracepoint_dlopen.tracepoint_register_lib =
- URCU_FORCE_CAST(int (*)(struct tracepoint * const *, int),
+ URCU_FORCE_CAST(int (*)(struct
lttng_ust_
tracepoint * const *, int),
dlsym(tracepoint_dlopen.liblttngust_handle,
"tracepoint_register_lib"));
tracepoint_dlopen.tracepoint_unregister_lib =
dlsym(tracepoint_dlopen.liblttngust_handle,
"tracepoint_register_lib"));
tracepoint_dlopen.tracepoint_unregister_lib =
- URCU_FORCE_CAST(int (*)(struct tracepoint * const *),
+ URCU_FORCE_CAST(int (*)(struct
lttng_ust_
tracepoint * const *),
dlsym(tracepoint_dlopen.liblttngust_handle,
"tracepoint_unregister_lib"));
__tracepoint__init_urcu_sym();
dlsym(tracepoint_dlopen.liblttngust_handle,
"tracepoint_unregister_lib"));
__tracepoint__init_urcu_sym();
@@
-565,7
+578,7
@@
__tracepoints__ptrs_destroy(void)
* debug information with line-level scope (TRACEPOINT_EVENT default)
*
* TRACE_DEBUG 14
* debug information with line-level scope (TRACEPOINT_EVENT default)
*
* TRACE_DEBUG 14
- * debug-level message
(trace_printf default)
+ * debug-level message
*
* Declare tracepoint loglevels for tracepoints. A TRACEPOINT_EVENT
* should be declared prior to the the TRACEPOINT_LOGLEVEL for a given
*
* Declare tracepoint loglevels for tracepoints. A TRACEPOINT_EVENT
* should be declared prior to the the TRACEPOINT_LOGLEVEL for a given
This page took
0.063924 seconds
and
4
git commands to generate.