[ust.git] / include / ust / marker.h

/*
 * Code markup for dynamic and static tracing.
 *
 * See Documentation/marker.txt.
 *
 * (C) Copyright 2006 Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
 * (C) Copyright 2009 Pierre-Marc Fournier <pierre-marc dot fournier at polymtl dot ca>
 * (C) Copyright 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 *
 * 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;
 * 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
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
 */

#ifndef _UST_MARKER_H
#define _UST_MARKER_H

#include <stdarg.h>
#include <ust/core.h>
#include <urcu/list.h>
#include <ust/kcompat/kcompat.h>

#include <bits/wordsize.h>

struct ust_marker;

/**
 * ust_marker_probe_func - Type of a marker probe function
 * @mdata: marker data
 * @probe_private: probe private data
 * @call_private: call site private data
 * @fmt: format string
 * @args: variable argument list pointer. Use a pointer to overcome C's
 *        inability to pass this around as a pointer in a portable manner in
 *        the callee otherwise.
 *
 * Type of marker probe functions. They receive the mdata and need to parse the
 * format string to recover the variable argument list.
 */
typedef void ust_marker_probe_func(const struct ust_marker *mdata,
		void *probe_private, void *call_private,
		const char *fmt, va_list *args);

struct ust_marker_probe_closure {
	ust_marker_probe_func *func;	/* Callback */
	void *probe_private;		/* Private probe data */
};

struct ust_marker {
	const char *channel;	/* Name of channel where to send data */
	const char *name;	/* Marker name */
	const char *format;	/* Marker format string, describing the
				 * variable argument list.
				 */
	char state;		/* State. */
	char ptype;		/* probe type : 0 : single, 1 : multi */
				/* Probe wrapper */
	u16 channel_id;		/* Numeric channel identifier, dynamic */
	u16 event_id;		/* Numeric event identifier, dynamic */
	void (*call)(const struct ust_marker *mdata, void *call_private, ...);
	struct ust_marker_probe_closure single;
	struct ust_marker_probe_closure *multi;
	const char *tp_name;	/* Optional tracepoint name */
	void *tp_cb;		/* Optional tracepoint callback */
};

#define GET_UST_MARKER(name)		(__ust_marker_def_##name)

/*
 * We keep the "channel" as internal field for marker.c *only*. It will be
 * removed soon.
 */

/*
 * __ust_marker_ptrs section is not const (read-only) because it needs to be
 * read-write to let the linker apply relocations and keep the object PIC.
 */
#define _DEFINE_UST_MARKER(channel, name, tp_name_str, tp_cb, format)	\
		static const char __mstrtab_##channel##_##name[]	\
		__attribute__((section("__ust_markers_strings")))	\
		= #channel "\0" #name "\0" format;			\
		static struct ust_marker __ust_marker_def_##name	\
		__attribute__((section("__ust_markers"))) =		\
		{ __mstrtab_##channel##_##name,				\
		  &__mstrtab_##channel##_##name[sizeof(#channel)],	\
		  &__mstrtab_##channel##_##name[sizeof(#channel) +	\
						sizeof(#name)],		\
		  0, 0, 0, 0, ust_marker_probe_cb,			\
		  { __ust_marker_empty_function, NULL},			\
		  NULL, tp_name_str, tp_cb };				\
		static struct ust_marker * __ust_marker_ptr_##name	\
			__attribute__((used, section("__ust_marker_ptrs"))) =	\
			&__ust_marker_def_##name

#define DEFINE_UST_MARKER(name, format)					\
		_DEFINE_UST_MARKER(ust, name, NULL, NULL, format)

#define DEFINE_UST_MARKER_TP(name, tp_name, tp_cb, format)		\
		_DEFINE_UST_MARKER(ust, name, #tp_name, tp_cb, format)

/*
 * Make sure the alignment of the structure in the __ust_marker 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.
 */

#define __ust_marker(channel, name, call_private, format, args...)	\
	do {								\
		_DEFINE_UST_MARKER(channel, name, NULL, NULL, format);	\
		__ust_marker_check_format(format, ## args);		\
		if (unlikely(__ust_marker_def_##name.state))		\
			(__ust_marker_def_##name.call)			\
				(&__ust_marker_def_##name, call_private,\
				## args);				\
	} while (0)

#define __ust_marker_tp(name, call_private, tp_name, tp_cb,		\
			format, args...)				\
	do {								\
		void __check_tp_type(void)				\
		{							\
			register_trace_##tp_name(tp_cb, call_private);	\
		}							\
		DEFINE_UST_MARKER_TP(name, #tp_name, tp_cb, format);	\
		__ust_marker_check_format(format, ## args);		\
		(*__ust_marker_def_##name.call)				\
			(&__ust_marker_def_##name, call_private, ## args);	\
	} while (0)

extern void ust_marker_update_probe_range(struct ust_marker * const *begin,
	struct ust_marker * const *end);

/**
 * ust_marker - Marker using code patching
 * @name: marker name, not quoted.
 * @format: format string
 * @args...: variable argument list
 *
 * Places a marker at caller site.
 */
#define ust_marker(name, format, args...) \
	__ust_marker(ust, name, NULL, format, ## args)


/*
 * trace_mark() -- TO BE DEPRECATED
 * @channel: name prefix, not quoted. Ignored.
 * @name: marker name, not quoted.
 * @format: format string
 * @args...: variable argument list
 *
 * Kept as a compatibility API and will be *DEPRECATED* in favor of
 * ust_marker().
 */
#define trace_mark(channel, name, format, args...)	\
	ust_marker(name, format, ## args)

/**
 * ust_marker_tp - Marker in a tracepoint callback
 * @name: marker name, not quoted.
 * @tp_name: tracepoint name, not quoted.
 * @tp_cb: tracepoint callback. Should have an associated global symbol so it
 *         is not optimized away by the compiler (should not be static).
 * @format: format string
 * @args...: variable argument list
 *
 * Places a marker in a tracepoint callback.
 */
#define ust_marker_tp(name, tp_name, tp_cb, format, args...)	\
	__ust_marker_tp(ust, name, NULL, tp_name, tp_cb, format, ## args)

/**
 * UST_MARKER_NOARGS - Format string for a marker with no argument.
 */
#define UST_MARKER_NOARGS " "

/**
 * MARKER_NOARGS - Compatibility API. Will be *DEPRECATED*. Use
 * UST_MARKER_NOARGS instead.
 */
#define MARK_NOARGS	UST_MARKER_NOARGS

extern void lock_ust_marker(void);
extern void unlock_ust_marker(void);

extern void ust_marker_compact_event_ids(void);

/* To be used for string format validity checking with gcc */
static inline void __printf(1, 2) ___ust_marker_check_format(const char *fmt, ...)
{
}

#define __ust_marker_check_format(format, args...)			\
	do {								\
		if (0)							\
			___ust_marker_check_format(format, ## args);	\
	} while (0)

extern ust_marker_probe_func __ust_marker_empty_function;

extern void ust_marker_probe_cb(const struct ust_marker *mdata,
	void *call_private, ...);

/*
 * Connect a probe to a marker.
 * private data pointer must be a valid allocated memory address, or NULL.
 */
extern int ust_marker_probe_register(const char *channel, const char *name,
	const char *format, ust_marker_probe_func *probe, void *probe_private);

/*
 * Returns the private data given to ust_marker_probe_register.
 */
extern int ust_marker_probe_unregister(const char *channel, const char *name,
	ust_marker_probe_func *probe, void *probe_private);
/*
 * Unregister a marker by providing the registered private data.
 */
extern int ust_marker_probe_unregister_private_data(ust_marker_probe_func *probe,
	void *probe_private);

extern void *ust_marker_get_private_data(const char *channel, const char *name,
	ust_marker_probe_func *probe, int num);

/*
 * ust_marker_synchronize_unregister must be called between the last marker probe
 * unregistration and the first one of
 * - the end of module exit function
 * - the free of any resource used by the probes
 * to ensure the code and data are valid for any possibly running probes.
 */
#define ust_marker_synchronize_unregister() synchronize_sched()

struct ust_marker_iter {
//ust//	struct module *module;
	struct ust_marker_lib *lib;
	struct ust_marker * const *ust_marker;
};

extern void ust_marker_iter_start(struct ust_marker_iter *iter);
extern void ust_marker_iter_next(struct ust_marker_iter *iter);
extern void ust_marker_iter_stop(struct ust_marker_iter *iter);
extern void ust_marker_iter_reset(struct ust_marker_iter *iter);
extern int ust_marker_get_iter_range(struct ust_marker * const **marker, struct ust_marker * const *begin,
	struct ust_marker * const *end);

extern void ust_marker_update_process(void);
extern int is_ust_marker_enabled(const char *channel, const char *name);

//ust// #ifdef CONFIG_UST_MARKER_USERSPACE
//ust// extern void exit_user_ust_marker(struct task_struct *p);
//ust// #else
//ust// static inline void exit_user_ust_marker(struct task_struct *p)
//ust// {
//ust// }
//ust// #endif

struct ust_marker_addr {
	struct ust_marker *marker;
	void *addr;
};

struct ust_marker_lib {
	struct ust_marker * const *ust_marker_start;
	int ust_marker_count;
	struct cds_list_head list;
};

extern int ust_marker_register_lib(struct ust_marker * const *ust_marker_start, int ust_marker_count);
extern int ust_marker_unregister_lib(struct ust_marker * const *ust_marker_start);

#define UST_MARKER_LIB							\
	extern struct ust_marker * const __start___ust_marker_ptrs[] __attribute__((weak, visibility("hidden"))); \
	extern struct ust_marker * const __stop___ust_marker_ptrs[] __attribute__((weak, visibility("hidden"))); \
	static struct ust_marker * __ust_marker_ptr_dummy		\
		__attribute__((used, section("__ust_marker_ptrs")));	\
									\
	static void __attribute__((constructor)) __ust_marker__init(void)	\
	{								\
		ust_marker_register_lib(__start___ust_marker_ptrs,	\
				    __stop___ust_marker_ptrs		\
				    - __start___ust_marker_ptrs);		\
	}								\
									\
	static void __attribute__((destructor)) __ust_marker__destroy(void)\
	{								\
		ust_marker_unregister_lib(__start___ust_marker_ptrs);	\
	}

/*
 * MARKER_LIB is kept for backward compatibility and will be
 * *DEPRECATED*. Use UST_MARKER_LIB instead.
 */
#define MARKER_LIB	UST_MARKER_LIB

extern void ust_marker_set_new_ust_marker_cb(void (*cb)(struct ust_marker *));
extern void init_ust_marker(void);

#endif /* _UST_MARKER_H */
Commit	Line	Data
a72ca31a PMF	1	/*
	2	* Code markup for dynamic and static tracing.
	3	*
	4	* See Documentation/marker.txt.
	5	*
	6	* (C) Copyright 2006 Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
59b161cd	7	* (C) Copyright 2009 Pierre-Marc Fournier <pierre-marc dot fournier at polymtl dot ca>
fe566790	8	* (C) Copyright 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
a72ca31a	9	*
8fc2d8db PMF	10	* This library is free software; you can redistribute it and/or
8fc2d8db PMF	11	* modify it under the terms of the GNU Lesser General Public
f37142a4 MD	12	* License as published by the Free Software Foundation;
f37142a4 MD	13	* version 2.1 of the License.
8fc2d8db PMF	14	*
	15	* This library is distributed in the hope that it will be useful,
	16	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	18	* Lesser General Public License for more details.
	19	*
	20	* You should have received a copy of the GNU Lesser General Public
	21	* License along with this library; if not, write to the Free Software
	22	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
a72ca31a PMF	23	*/
a72ca31a PMF	24
2288bf6d PMF	25	#ifndef _UST_MARKER_H
2288bf6d PMF	26	#define _UST_MARKER_H
e4621c7f	27
a72ca31a	28	#include <stdarg.h>
518d7abb	29	#include <ust/core.h>
22d9080d	30	#include <urcu/list.h>
518d7abb	31	#include <ust/kcompat/kcompat.h>
59b161cd	32
9389f19d PMF	33	#include <bits/wordsize.h>
9389f19d PMF	34
b521931e	35	struct ust_marker;
a72ca31a PMF	36
a72ca31a PMF	37	/**
b521931e	38	* ust_marker_probe_func - Type of a marker probe function
a72ca31a PMF	39	* @mdata: marker data
	40	* @probe_private: probe private data
	41	* @call_private: call site private data
	42	* @fmt: format string
	43	* @args: variable argument list pointer. Use a pointer to overcome C's
	44	* inability to pass this around as a pointer in a portable manner in
	45	* the callee otherwise.
	46	*
	47	* Type of marker probe functions. They receive the mdata and need to parse the
	48	* format string to recover the variable argument list.
	49	*/
b521931e	50	typedef void ust_marker_probe_func(const struct ust_marker *mdata,
fe566790	51	void probe_private, void call_private,
a72ca31a PMF	52	const char fmt, va_list args);
a72ca31a PMF	53
b521931e MD	54	struct ust_marker_probe_closure {
b521931e MD	55	ust_marker_probe_func func; / Callback */
a72ca31a PMF	56	void probe_private; / Private probe data */
	57	};
	58
b521931e	59	struct ust_marker {
a72ca31a PMF	60	const char channel; / Name of channel where to send data */
	61	const char name; / Marker name */
	62	const char format; / Marker format string, describing the
	63	* variable argument list.
	64	*/
f36c12ab	65	char state; /* State. */
a72ca31a PMF	66	char ptype; /* probe type : 0 : single, 1 : multi */
	67	/* Probe wrapper */
	68	u16 channel_id; /* Numeric channel identifier, dynamic */
	69	u16 event_id; /* Numeric event identifier, dynamic */
fe566790	70	void (call)(const struct ust_marker mdata, void *call_private, ...);
b521931e MD	71	struct ust_marker_probe_closure single;
b521931e MD	72	struct ust_marker_probe_closure *multi;
a72ca31a PMF	73	const char tp_name; / Optional tracepoint name */
a72ca31a PMF	74	void tp_cb; / Optional tracepoint callback */
eb5d20c6	75	};
a72ca31a	76
fe566790	77	#define GET_UST_MARKER(name) (__ust_marker_def_##name)
a72ca31a	78
fe566790 MD	79	/*
	80	* We keep the "channel" as internal field for marker.c only. It will be
	81	* removed soon.
	82	*/
7166e240	83
fe566790 MD	84	/*
	85	* __ust_marker_ptrs section is not const (read-only) because it needs to be
	86	* read-write to let the linker apply relocations and keep the object PIC.
	87	*/
	88	#define _DEFINE_UST_MARKER(channel, name, tp_name_str, tp_cb, format) \
7166e240	89	static const char __mstrtab_##channel##_##name[] \
fe566790	90	__attribute__((section("__ust_markers_strings"))) \
7166e240	91	= #channel "\0" #name "\0" format; \
fe566790 MD	92	static struct ust_marker __ust_marker_def_##name \
fe566790 MD	93	__attribute__((section("__ust_markers"))) = \
7166e240	94	{ __mstrtab_##channel##_##name, \
fe566790 MD	95	&__mstrtab_##channel##_##name[sizeof(#channel)], \
	96	&__mstrtab_##channel##_##name[sizeof(#channel) + \
	97	sizeof(#name)], \
	98	0, 0, 0, 0, ust_marker_probe_cb, \
	99	{ __ust_marker_empty_function, NULL}, \
	100	NULL, tp_name_str, tp_cb }; \
	101	static struct ust_marker * __ust_marker_ptr_##name \
b521931e	102	__attribute__((used, section("__ust_marker_ptrs"))) = \
fe566790 MD	103	&__ust_marker_def_##name
	104
	105	#define DEFINE_UST_MARKER(name, format) \
	106	_DEFINE_UST_MARKER(ust, name, NULL, NULL, format)
	107
	108	#define DEFINE_UST_MARKER_TP(name, tp_name, tp_cb, format) \
	109	_DEFINE_UST_MARKER(ust, name, #tp_name, tp_cb, format)
a72ca31a PMF	110
a72ca31a PMF	111	/*
b521931e	112	* Make sure the alignment of the structure in the __ust_marker section will
a72ca31a PMF	113	* not add unwanted padding between the beginning of the section and the
a72ca31a PMF	114	* structure. Force alignment to the same alignment as the section start.
a72ca31a	115	*/
bb9ade29	116
fe566790	117	#define __ust_marker(channel, name, call_private, format, args...) \
a72ca31a	118	do { \
fe566790	119	_DEFINE_UST_MARKER(channel, name, NULL, NULL, format); \
b521931e	120	__ust_marker_check_format(format, ## args); \
fe566790 MD	121	if (unlikely(__ust_marker_def_##name.state)) \
	122	(__ust_marker_def_##name.call) \
	123	(&__ust_marker_def_##name, call_private,\
	124	## args); \
a72ca31a PMF	125	} while (0)
a72ca31a PMF	126
fe566790 MD	127	#define __ust_marker_tp(name, call_private, tp_name, tp_cb, \
fe566790 MD	128	format, args...) \
a72ca31a PMF	129	do { \
	130	void __check_tp_type(void) \
	131	{ \
fe566790	132	register_trace_##tp_name(tp_cb, call_private); \
a72ca31a	133	} \
fe566790	134	DEFINE_UST_MARKER_TP(name, #tp_name, tp_cb, format); \
b521931e	135	__ust_marker_check_format(format, ## args); \
fe566790 MD	136	(*__ust_marker_def_##name.call) \
fe566790 MD	137	(&__ust_marker_def_##name, call_private, ## args); \
a72ca31a PMF	138	} while (0)
a72ca31a PMF	139
b521931e MD	140	extern void ust_marker_update_probe_range(struct ust_marker * const *begin,
b521931e MD	141	struct ust_marker * const *end);
a72ca31a	142
a72ca31a	143	/**
686debc3	144	* ust_marker - Marker using code patching
a72ca31a PMF	145	* @name: marker name, not quoted.
	146	* @format: format string
	147	* @args...: variable argument list
	148	*
f36c12ab	149	* Places a marker at caller site.
a72ca31a	150	*/
686debc3	151	#define ust_marker(name, format, args...) \
f36c12ab	152	__ust_marker(ust, name, NULL, format, ## args)
a72ca31a	153
5389de4d MD	154
	155	/*
	156	* trace_mark() -- TO BE DEPRECATED
	157	* @channel: name prefix, not quoted. Ignored.
	158	* @name: marker name, not quoted.
	159	* @format: format string
	160	* @args...: variable argument list
	161	*
	162	* Kept as a compatibility API and will be DEPRECATED in favor of
	163	* ust_marker().
	164	*/
	165	#define trace_mark(channel, name, format, args...) \
5dac4513	166	ust_marker(name, format, ## args)
5389de4d	167
a72ca31a	168	/**
686debc3	169	* ust_marker_tp - Marker in a tracepoint callback
a72ca31a PMF	170	* @name: marker name, not quoted.
	171	* @tp_name: tracepoint name, not quoted.
	172	* @tp_cb: tracepoint callback. Should have an associated global symbol so it
	173	* is not optimized away by the compiler (should not be static).
	174	* @format: format string
	175	* @args...: variable argument list
	176	*
	177	* Places a marker in a tracepoint callback.
	178	*/
686debc3 MD	179	#define ust_marker_tp(name, tp_name, tp_cb, format, args...) \
686debc3 MD	180	__ust_marker_tp(ust, name, NULL, tp_name, tp_cb, format, ## args)
a72ca31a PMF	181
a72ca31a PMF	182	/**
b521931e	183	* UST_MARKER_NOARGS - Format string for a marker with no argument.
a72ca31a	184	*/
b521931e	185	#define UST_MARKER_NOARGS " "
a72ca31a	186
1790c2fe MD	187	/**
	188	* MARKER_NOARGS - Compatibility API. Will be DEPRECATED. Use
	189	* UST_MARKER_NOARGS instead.
	190	*/
	191	#define MARK_NOARGS UST_MARKER_NOARGS
	192
b521931e MD	193	extern void lock_ust_marker(void);
b521931e MD	194	extern void unlock_ust_marker(void);
a72ca31a	195
b521931e	196	extern void ust_marker_compact_event_ids(void);
a72ca31a PMF	197
a72ca31a PMF	198	/* To be used for string format validity checking with gcc */
b521931e	199	static inline void __printf(1, 2) ___ust_marker_check_format(const char *fmt, ...)
a72ca31a PMF	200	{
	201	}
	202
b521931e	203	#define __ust_marker_check_format(format, args...) \
a72ca31a PMF	204	do { \
a72ca31a PMF	205	if (0) \
b521931e	206	___ust_marker_check_format(format, ## args); \
a72ca31a PMF	207	} while (0)
a72ca31a PMF	208
b521931e	209	extern ust_marker_probe_func __ust_marker_empty_function;
a72ca31a	210
b521931e	211	extern void ust_marker_probe_cb(const struct ust_marker *mdata,
fe566790	212	void *call_private, ...);
a72ca31a PMF	213
	214	/*
	215	* Connect a probe to a marker.
	216	* private data pointer must be a valid allocated memory address, or NULL.
	217	*/
b521931e MD	218	extern int ust_marker_probe_register(const char channel, const char name,
b521931e MD	219	const char format, ust_marker_probe_func probe, void *probe_private);
a72ca31a PMF	220
a72ca31a PMF	221	/*
b521931e	222	* Returns the private data given to ust_marker_probe_register.
a72ca31a	223	*/
b521931e MD	224	extern int ust_marker_probe_unregister(const char channel, const char name,
b521931e MD	225	ust_marker_probe_func probe, void probe_private);
a72ca31a PMF	226	/*
	227	* Unregister a marker by providing the registered private data.
	228	*/
b521931e	229	extern int ust_marker_probe_unregister_private_data(ust_marker_probe_func *probe,
a72ca31a PMF	230	void *probe_private);
a72ca31a PMF	231
b521931e MD	232	extern void ust_marker_get_private_data(const char channel, const char *name,
b521931e MD	233	ust_marker_probe_func *probe, int num);
a72ca31a PMF	234
a72ca31a PMF	235	/*
b521931e	236	* ust_marker_synchronize_unregister must be called between the last marker probe
a72ca31a PMF	237	* unregistration and the first one of
	238	* - the end of module exit function
	239	* - the free of any resource used by the probes
	240	* to ensure the code and data are valid for any possibly running probes.
	241	*/
b521931e	242	#define ust_marker_synchronize_unregister() synchronize_sched()
a72ca31a	243
b521931e	244	struct ust_marker_iter {
98963de4	245	//ust// struct module *module;
b521931e MD	246	struct ust_marker_lib *lib;
b521931e MD	247	struct ust_marker * const *ust_marker;
a72ca31a PMF	248	};
a72ca31a PMF	249
b521931e MD	250	extern void ust_marker_iter_start(struct ust_marker_iter *iter);
	251	extern void ust_marker_iter_next(struct ust_marker_iter *iter);
	252	extern void ust_marker_iter_stop(struct ust_marker_iter *iter);
	253	extern void ust_marker_iter_reset(struct ust_marker_iter *iter);
	254	extern int ust_marker_get_iter_range(struct ust_marker * const *marker, struct ust_marker const *begin,
	255	struct ust_marker * const *end);
a72ca31a	256
b521931e MD	257	extern void ust_marker_update_process(void);
b521931e MD	258	extern int is_ust_marker_enabled(const char channel, const char name);
a72ca31a	259
b521931e MD	260	//ust// #ifdef CONFIG_UST_MARKER_USERSPACE
b521931e MD	261	//ust// extern void exit_user_ust_marker(struct task_struct *p);
59b161cd	262	//ust// #else
b521931e	263	//ust// static inline void exit_user_ust_marker(struct task_struct *p)
59b161cd PMF	264	//ust// {
	265	//ust// }
	266	//ust// #endif
a72ca31a	267
b521931e MD	268	struct ust_marker_addr {
b521931e MD	269	struct ust_marker *marker;
3ea1e2fc PMF	270	void *addr;
3ea1e2fc PMF	271	};
98963de4	272
b521931e MD	273	struct ust_marker_lib {
b521931e MD	274	struct ust_marker * const *ust_marker_start;
b521931e	275	int ust_marker_count;
0222e121	276	struct cds_list_head list;
98963de4 PMF	277	};
98963de4 PMF	278
b521931e MD	279	extern int ust_marker_register_lib(struct ust_marker * const *ust_marker_start, int ust_marker_count);
b521931e MD	280	extern int ust_marker_unregister_lib(struct ust_marker * const *ust_marker_start);
defa46a7	281
b521931e MD	282	#define UST_MARKER_LIB \
	283	extern struct ust_marker * const __start___ust_marker_ptrs[] __attribute__((weak, visibility("hidden"))); \
	284	extern struct ust_marker * const __stop___ust_marker_ptrs[] __attribute__((weak, visibility("hidden"))); \
fe566790 MD	285	static struct ust_marker * __ust_marker_ptr_dummy \
fe566790 MD	286	__attribute__((used, section("__ust_marker_ptrs"))); \
55994a67	287	\
b521931e	288	static void __attribute__((constructor)) __ust_marker__init(void) \
55994a67	289	{ \
b521931e MD	290	ust_marker_register_lib(__start___ust_marker_ptrs, \
	291	__stop___ust_marker_ptrs \
	292	- __start___ust_marker_ptrs); \
900e307e MD	293	} \
900e307e MD	294	\
b521931e	295	static void __attribute__((destructor)) __ust_marker__destroy(void)\
24b6668c	296	{ \
b521931e	297	ust_marker_unregister_lib(__start___ust_marker_ptrs); \
55994a67	298	}
98963de4	299
7a05c99d MD	300	/*
	301	* MARKER_LIB is kept for backward compatibility and will be
	302	* DEPRECATED. Use UST_MARKER_LIB instead.
	303	*/
	304	#define MARKER_LIB UST_MARKER_LIB
	305
b521931e MD	306	extern void ust_marker_set_new_ust_marker_cb(void (cb)(struct ust_marker ));
b521931e MD	307	extern void init_ust_marker(void);
9160b4e4	308
defa46a7	309	#endif /* _UST_MARKER_H */