[lttng-modules.git] / lttng-abi.h

#ifndef _LTTNG_ABI_H
#define _LTTNG_ABI_H

/*
 * lttng-abi.h
 *
 * LTTng ABI header
 *
 * Copyright (C) 2010-2012 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; only
 * 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
 */

#include <linux/fs.h>

/*
 * Major/minor version of ABI exposed to lttng tools. Major number
 * should be increased when an incompatible ABI change is done.
 */
#define LTTNG_MODULES_ABI_MAJOR_VERSION		2
#define LTTNG_MODULES_ABI_MINOR_VERSION		3

#define LTTNG_KERNEL_SYM_NAME_LEN	256

enum lttng_kernel_instrumentation {
	LTTNG_KERNEL_TRACEPOINT	= 0,
	LTTNG_KERNEL_KPROBE	= 1,
	LTTNG_KERNEL_FUNCTION	= 2,
	LTTNG_KERNEL_KRETPROBE	= 3,
	LTTNG_KERNEL_NOOP	= 4,	/* not hooked */
	LTTNG_KERNEL_SYSCALL	= 5,
};

/*
 * LTTng consumer mode
 */
enum lttng_kernel_output {
	LTTNG_KERNEL_SPLICE	= 0,
	LTTNG_KERNEL_MMAP	= 1,
};

/*
 * LTTng DebugFS ABI structures.
 */
#define LTTNG_KERNEL_CHANNEL_PADDING	LTTNG_KERNEL_SYM_NAME_LEN + 32
struct lttng_kernel_channel {
	uint64_t subbuf_size;			/* in bytes */
	uint64_t num_subbuf;
	unsigned int switch_timer_interval;	/* usecs */
	unsigned int read_timer_interval;	/* usecs */
	enum lttng_kernel_output output;	/* splice, mmap */
	int overwrite;				/* 1: overwrite, 0: discard */
	char padding[LTTNG_KERNEL_CHANNEL_PADDING];
} __attribute__((packed));

struct lttng_kernel_kretprobe {
	uint64_t addr;

	uint64_t offset;
	char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
} __attribute__((packed));

/*
 * Either addr is used, or symbol_name and offset.
 */
struct lttng_kernel_kprobe {
	uint64_t addr;

	uint64_t offset;
	char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
} __attribute__((packed));

struct lttng_kernel_function_tracer {
	char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
} __attribute__((packed));

/*
 * For syscall tracing, name = "*" means "enable all".
 */
#define LTTNG_KERNEL_EVENT_PADDING1	16
#define LTTNG_KERNEL_EVENT_PADDING2	LTTNG_KERNEL_SYM_NAME_LEN + 32
struct lttng_kernel_event {
	char name[LTTNG_KERNEL_SYM_NAME_LEN];	/* event name */
	enum lttng_kernel_instrumentation instrumentation;
	char padding[LTTNG_KERNEL_EVENT_PADDING1];

	/* Per instrumentation type configuration */
	union {
		struct lttng_kernel_kretprobe kretprobe;
		struct lttng_kernel_kprobe kprobe;
		struct lttng_kernel_function_tracer ftrace;
		char padding[LTTNG_KERNEL_EVENT_PADDING2];
	} u;
} __attribute__((packed));

struct lttng_kernel_tracer_version {
	uint32_t major;
	uint32_t minor;
	uint32_t patchlevel;
} __attribute__((packed));

struct lttng_kernel_tracer_abi_version {
	uint32_t major;
	uint32_t minor;
} __attribute__((packed));

enum lttng_kernel_calibrate_type {
	LTTNG_KERNEL_CALIBRATE_KRETPROBE,
};

struct lttng_kernel_calibrate {
	enum lttng_kernel_calibrate_type type;	/* type (input) */
} __attribute__((packed));

struct lttng_kernel_syscall_mask {
	uint32_t len;	/* in bits */
	char mask[];
} __attribute__((packed));

enum lttng_kernel_context_type {
	LTTNG_KERNEL_CONTEXT_PID		= 0,
	LTTNG_KERNEL_CONTEXT_PERF_COUNTER	= 1,
	LTTNG_KERNEL_CONTEXT_PROCNAME		= 2,
	LTTNG_KERNEL_CONTEXT_PRIO		= 3,
	LTTNG_KERNEL_CONTEXT_NICE		= 4,
	LTTNG_KERNEL_CONTEXT_VPID		= 5,
	LTTNG_KERNEL_CONTEXT_TID		= 6,
	LTTNG_KERNEL_CONTEXT_VTID		= 7,
	LTTNG_KERNEL_CONTEXT_PPID		= 8,
	LTTNG_KERNEL_CONTEXT_VPPID		= 9,
	LTTNG_KERNEL_CONTEXT_HOSTNAME		= 10,
	LTTNG_KERNEL_CONTEXT_CPU_ID		= 11,
	LTTNG_KERNEL_CONTEXT_INTERRUPTIBLE	= 12,
	LTTNG_KERNEL_CONTEXT_PREEMPTIBLE	= 13,
	LTTNG_KERNEL_CONTEXT_NEED_RESCHEDULE	= 14,
	LTTNG_KERNEL_CONTEXT_MIGRATABLE		= 15,
};

struct lttng_kernel_perf_counter_ctx {
	uint32_t type;
	uint64_t config;
	char name[LTTNG_KERNEL_SYM_NAME_LEN];
} __attribute__((packed));

#define LTTNG_KERNEL_CONTEXT_PADDING1	16
#define LTTNG_KERNEL_CONTEXT_PADDING2	LTTNG_KERNEL_SYM_NAME_LEN + 32
struct lttng_kernel_context {
	enum lttng_kernel_context_type ctx;
	char padding[LTTNG_KERNEL_CONTEXT_PADDING1];

	union {
		struct lttng_kernel_perf_counter_ctx perf_counter;
		char padding[LTTNG_KERNEL_CONTEXT_PADDING2];
	} u;
} __attribute__((packed));

#define LTTNG_KERNEL_FILTER_BYTECODE_MAX_LEN		65536
struct lttng_kernel_filter_bytecode {
	uint32_t len;
	uint32_t reloc_offset;
	uint64_t seqnum;
	char data[0];
} __attribute__((packed));

/* LTTng file descriptor ioctl */
#define LTTNG_KERNEL_SESSION			_IO(0xF6, 0x45)
#define LTTNG_KERNEL_TRACER_VERSION		\
	_IOR(0xF6, 0x46, struct lttng_kernel_tracer_version)
#define LTTNG_KERNEL_TRACEPOINT_LIST		_IO(0xF6, 0x47)
#define LTTNG_KERNEL_WAIT_QUIESCENT		_IO(0xF6, 0x48)
#define LTTNG_KERNEL_CALIBRATE			\
	_IOWR(0xF6, 0x49, struct lttng_kernel_calibrate)
#define LTTNG_KERNEL_SYSCALL_LIST		_IO(0xF6, 0x4A)
#define LTTNG_KERNEL_TRACER_ABI_VERSION		\
	_IOR(0xF6, 0x4B, struct lttng_kernel_tracer_abi_version)

/* Session FD ioctl */
#define LTTNG_KERNEL_METADATA			\
	_IOW(0xF6, 0x54, struct lttng_kernel_channel)
#define LTTNG_KERNEL_CHANNEL			\
	_IOW(0xF6, 0x55, struct lttng_kernel_channel)
#define LTTNG_KERNEL_SESSION_START		_IO(0xF6, 0x56)
#define LTTNG_KERNEL_SESSION_STOP		_IO(0xF6, 0x57)
#define LTTNG_KERNEL_SESSION_TRACK_PID		\
	_IOR(0xF6, 0x58, int32_t)
#define LTTNG_KERNEL_SESSION_UNTRACK_PID	\
	_IOR(0xF6, 0x59, int32_t)
/*
 * ioctl 0x58 and 0x59 are duplicated here. It works, since _IOR vs _IO
 * are generating two different ioctl numbers, but this was not done on
 * purpose. We should generally try to avoid those duplications.
 */
#define LTTNG_KERNEL_SESSION_LIST_TRACKER_PIDS	_IO(0xF6, 0x58)
#define LTTNG_KERNEL_SESSION_METADATA_REGEN	_IO(0xF6, 0x59)
/* 0x5A and 0x5B are reserved for a future ABI-breaking cleanup. */
#define LTTNG_KERNEL_SESSION_STATEDUMP		_IO(0xF6, 0x5C)

/* Channel FD ioctl */
#define LTTNG_KERNEL_STREAM			_IO(0xF6, 0x62)
#define LTTNG_KERNEL_EVENT			\
	_IOW(0xF6, 0x63, struct lttng_kernel_event)
#define LTTNG_KERNEL_SYSCALL_MASK		\
	_IOWR(0xF6, 0x64, struct lttng_kernel_syscall_mask)

/* Event and Channel FD ioctl */
#define LTTNG_KERNEL_CONTEXT			\
	_IOW(0xF6, 0x71, struct lttng_kernel_context)

/* Event, Channel and Session ioctl */
#define LTTNG_KERNEL_ENABLE			_IO(0xF6, 0x82)
#define LTTNG_KERNEL_DISABLE			_IO(0xF6, 0x83)

/* Event FD ioctl */
#define LTTNG_KERNEL_FILTER			_IO(0xF6, 0x90)

/* LTTng-specific ioctls for the lib ringbuffer */
/* returns the timestamp begin of the current sub-buffer */
#define LTTNG_RING_BUFFER_GET_TIMESTAMP_BEGIN	_IOR(0xF6, 0x20, uint64_t)
/* returns the timestamp end of the current sub-buffer */
#define LTTNG_RING_BUFFER_GET_TIMESTAMP_END	_IOR(0xF6, 0x21, uint64_t)
/* returns the number of events discarded */
#define LTTNG_RING_BUFFER_GET_EVENTS_DISCARDED	_IOR(0xF6, 0x22, uint64_t)
/* returns the packet payload size */
#define LTTNG_RING_BUFFER_GET_CONTENT_SIZE	_IOR(0xF6, 0x23, uint64_t)
/* returns the actual packet size */
#define LTTNG_RING_BUFFER_GET_PACKET_SIZE	_IOR(0xF6, 0x24, uint64_t)
/* returns the stream id */
#define LTTNG_RING_BUFFER_GET_STREAM_ID		_IOR(0xF6, 0x25, uint64_t)
/* returns the current timestamp */
#define LTTNG_RING_BUFFER_GET_CURRENT_TIMESTAMP	_IOR(0xF6, 0x26, uint64_t)
/* returns the packet sequence number */
#define LTTNG_RING_BUFFER_GET_SEQ_NUM		_IOR(0xF6, 0x27, uint64_t)
/* returns the stream instance id */
#define LTTNG_RING_BUFFER_INSTANCE_ID		_IOR(0xF6, 0x28, uint64_t)

#ifdef CONFIG_COMPAT
/* returns the timestamp begin of the current sub-buffer */
#define LTTNG_RING_BUFFER_COMPAT_GET_TIMESTAMP_BEGIN \
	LTTNG_RING_BUFFER_GET_TIMESTAMP_BEGIN
/* returns the timestamp end of the current sub-buffer */
#define LTTNG_RING_BUFFER_COMPAT_GET_TIMESTAMP_END \
	LTTNG_RING_BUFFER_GET_TIMESTAMP_END
/* returns the number of events discarded */
#define LTTNG_RING_BUFFER_COMPAT_GET_EVENTS_DISCARDED \
	LTTNG_RING_BUFFER_GET_EVENTS_DISCARDED
/* returns the packet payload size */
#define LTTNG_RING_BUFFER_COMPAT_GET_CONTENT_SIZE \
	LTTNG_RING_BUFFER_GET_CONTENT_SIZE
/* returns the actual packet size */
#define LTTNG_RING_BUFFER_COMPAT_GET_PACKET_SIZE \
	LTTNG_RING_BUFFER_GET_PACKET_SIZE
/* returns the stream id */
#define LTTNG_RING_BUFFER_COMPAT_GET_STREAM_ID \
	LTTNG_RING_BUFFER_GET_STREAM_ID
/* returns the current timestamp */
#define LTTNG_RING_BUFFER_COMPAT_GET_CURRENT_TIMESTAMP \
	LTTNG_RING_BUFFER_GET_CURRENT_TIMESTAMP
/* returns the packet sequence number */
#define LTTNG_RING_BUFFER_COMPAT_GET_SEQ_NUM	\
	LTTNG_RING_BUFFER_GET_SEQ_NUM
/* returns the stream instance id */
#define LTTNG_RING_BUFFER_COMPAT_INSTANCE_ID	\
	LTTNG_RING_BUFFER_INSTANCE_ID
#endif /* CONFIG_COMPAT */

#endif /* _LTTNG_ABI_H */
Commit	Line	Data
	1	#ifndef _LTTNG_ABI_H
	2	#define _LTTNG_ABI_H
	3
	4	/*
	5	* lttng-abi.h
	6	*
	7	* LTTng ABI header
	8	*
	9	* Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	10	*
	11	* This library is free software; you can redistribute it and/or
	12	* modify it under the terms of the GNU Lesser General Public
	13	* License as published by the Free Software Foundation; only
	14	* version 2.1 of the License.
	15	*
	16	* This library is distributed in the hope that it will be useful,
	17	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	18	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	19	* Lesser General Public License for more details.
	20	*
	21	* You should have received a copy of the GNU Lesser General Public
	22	* License along with this library; if not, write to the Free Software
	23	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	24	*/
	25
	26	#include <linux/fs.h>
	27
	28	/*
	29	* Major/minor version of ABI exposed to lttng tools. Major number
	30	* should be increased when an incompatible ABI change is done.
	31	*/
	32	#define LTTNG_MODULES_ABI_MAJOR_VERSION 2
	33	#define LTTNG_MODULES_ABI_MINOR_VERSION 3
	34
	35	#define LTTNG_KERNEL_SYM_NAME_LEN 256
	36
	37	enum lttng_kernel_instrumentation {
	38	LTTNG_KERNEL_TRACEPOINT = 0,
	39	LTTNG_KERNEL_KPROBE = 1,
	40	LTTNG_KERNEL_FUNCTION = 2,
	41	LTTNG_KERNEL_KRETPROBE = 3,
	42	LTTNG_KERNEL_NOOP = 4, /* not hooked */
	43	LTTNG_KERNEL_SYSCALL = 5,
	44	};
	45
	46	/*
	47	* LTTng consumer mode
	48	*/
	49	enum lttng_kernel_output {
	50	LTTNG_KERNEL_SPLICE = 0,
	51	LTTNG_KERNEL_MMAP = 1,
	52	};
	53
	54	/*
	55	* LTTng DebugFS ABI structures.
	56	*/
	57	#define LTTNG_KERNEL_CHANNEL_PADDING LTTNG_KERNEL_SYM_NAME_LEN + 32
	58	struct lttng_kernel_channel {
	59	uint64_t subbuf_size; /* in bytes */
	60	uint64_t num_subbuf;
	61	unsigned int switch_timer_interval; /* usecs */
	62	unsigned int read_timer_interval; /* usecs */
	63	enum lttng_kernel_output output; /* splice, mmap */
	64	int overwrite; /* 1: overwrite, 0: discard */
	65	char padding[LTTNG_KERNEL_CHANNEL_PADDING];
	66	} __attribute__((packed));
	67
	68	struct lttng_kernel_kretprobe {
	69	uint64_t addr;
	70
	71	uint64_t offset;
	72	char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
	73	} __attribute__((packed));
	74
	75	/*
	76	* Either addr is used, or symbol_name and offset.
	77	*/
	78	struct lttng_kernel_kprobe {
	79	uint64_t addr;
	80
	81	uint64_t offset;
	82	char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
	83	} __attribute__((packed));
	84
	85	struct lttng_kernel_function_tracer {
	86	char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
	87	} __attribute__((packed));
	88
	89	/*
	90	* For syscall tracing, name = "*" means "enable all".
	91	*/
	92	#define LTTNG_KERNEL_EVENT_PADDING1 16
	93	#define LTTNG_KERNEL_EVENT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
	94	struct lttng_kernel_event {
	95	char name[LTTNG_KERNEL_SYM_NAME_LEN]; /* event name */
	96	enum lttng_kernel_instrumentation instrumentation;
	97	char padding[LTTNG_KERNEL_EVENT_PADDING1];
	98
	99	/* Per instrumentation type configuration */
	100	union {
	101	struct lttng_kernel_kretprobe kretprobe;
	102	struct lttng_kernel_kprobe kprobe;
	103	struct lttng_kernel_function_tracer ftrace;
	104	char padding[LTTNG_KERNEL_EVENT_PADDING2];
	105	} u;
	106	} __attribute__((packed));
	107
	108	struct lttng_kernel_tracer_version {
	109	uint32_t major;
	110	uint32_t minor;
	111	uint32_t patchlevel;
	112	} __attribute__((packed));
	113
	114	struct lttng_kernel_tracer_abi_version {
	115	uint32_t major;
	116	uint32_t minor;
	117	} __attribute__((packed));
	118
	119	enum lttng_kernel_calibrate_type {
	120	LTTNG_KERNEL_CALIBRATE_KRETPROBE,
	121	};
	122
	123	struct lttng_kernel_calibrate {
	124	enum lttng_kernel_calibrate_type type; /* type (input) */
	125	} __attribute__((packed));
	126
	127	struct lttng_kernel_syscall_mask {
	128	uint32_t len; /* in bits */
	129	char mask[];
	130	} __attribute__((packed));
	131
	132	enum lttng_kernel_context_type {
	133	LTTNG_KERNEL_CONTEXT_PID = 0,
	134	LTTNG_KERNEL_CONTEXT_PERF_COUNTER = 1,
	135	LTTNG_KERNEL_CONTEXT_PROCNAME = 2,
	136	LTTNG_KERNEL_CONTEXT_PRIO = 3,
	137	LTTNG_KERNEL_CONTEXT_NICE = 4,
	138	LTTNG_KERNEL_CONTEXT_VPID = 5,
	139	LTTNG_KERNEL_CONTEXT_TID = 6,
	140	LTTNG_KERNEL_CONTEXT_VTID = 7,
	141	LTTNG_KERNEL_CONTEXT_PPID = 8,
	142	LTTNG_KERNEL_CONTEXT_VPPID = 9,
	143	LTTNG_KERNEL_CONTEXT_HOSTNAME = 10,
	144	LTTNG_KERNEL_CONTEXT_CPU_ID = 11,
	145	LTTNG_KERNEL_CONTEXT_INTERRUPTIBLE = 12,
	146	LTTNG_KERNEL_CONTEXT_PREEMPTIBLE = 13,
	147	LTTNG_KERNEL_CONTEXT_NEED_RESCHEDULE = 14,
	148	LTTNG_KERNEL_CONTEXT_MIGRATABLE = 15,
	149	};
	150
	151	struct lttng_kernel_perf_counter_ctx {
	152	uint32_t type;
	153	uint64_t config;
	154	char name[LTTNG_KERNEL_SYM_NAME_LEN];
	155	} __attribute__((packed));
	156
	157	#define LTTNG_KERNEL_CONTEXT_PADDING1 16
	158	#define LTTNG_KERNEL_CONTEXT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
	159	struct lttng_kernel_context {
	160	enum lttng_kernel_context_type ctx;
	161	char padding[LTTNG_KERNEL_CONTEXT_PADDING1];
	162
	163	union {
	164	struct lttng_kernel_perf_counter_ctx perf_counter;
	165	char padding[LTTNG_KERNEL_CONTEXT_PADDING2];
	166	} u;
	167	} __attribute__((packed));
	168
	169	#define LTTNG_KERNEL_FILTER_BYTECODE_MAX_LEN 65536
	170	struct lttng_kernel_filter_bytecode {
	171	uint32_t len;
	172	uint32_t reloc_offset;
	173	uint64_t seqnum;
	174	char data[0];
	175	} __attribute__((packed));
	176
	177	/* LTTng file descriptor ioctl */
	178	#define LTTNG_KERNEL_SESSION _IO(0xF6, 0x45)
	179	#define LTTNG_KERNEL_TRACER_VERSION \
	180	_IOR(0xF6, 0x46, struct lttng_kernel_tracer_version)
	181	#define LTTNG_KERNEL_TRACEPOINT_LIST _IO(0xF6, 0x47)
	182	#define LTTNG_KERNEL_WAIT_QUIESCENT _IO(0xF6, 0x48)
	183	#define LTTNG_KERNEL_CALIBRATE \
	184	_IOWR(0xF6, 0x49, struct lttng_kernel_calibrate)
	185	#define LTTNG_KERNEL_SYSCALL_LIST _IO(0xF6, 0x4A)
	186	#define LTTNG_KERNEL_TRACER_ABI_VERSION \
	187	_IOR(0xF6, 0x4B, struct lttng_kernel_tracer_abi_version)
	188
	189	/* Session FD ioctl */
	190	#define LTTNG_KERNEL_METADATA \
	191	_IOW(0xF6, 0x54, struct lttng_kernel_channel)
	192	#define LTTNG_KERNEL_CHANNEL \
	193	_IOW(0xF6, 0x55, struct lttng_kernel_channel)
	194	#define LTTNG_KERNEL_SESSION_START _IO(0xF6, 0x56)
	195	#define LTTNG_KERNEL_SESSION_STOP _IO(0xF6, 0x57)
	196	#define LTTNG_KERNEL_SESSION_TRACK_PID \
	197	_IOR(0xF6, 0x58, int32_t)
	198	#define LTTNG_KERNEL_SESSION_UNTRACK_PID \
	199	_IOR(0xF6, 0x59, int32_t)
	200	/*
	201	* ioctl 0x58 and 0x59 are duplicated here. It works, since _IOR vs _IO
	202	* are generating two different ioctl numbers, but this was not done on
	203	* purpose. We should generally try to avoid those duplications.
	204	*/
	205	#define LTTNG_KERNEL_SESSION_LIST_TRACKER_PIDS _IO(0xF6, 0x58)
	206	#define LTTNG_KERNEL_SESSION_METADATA_REGEN _IO(0xF6, 0x59)
	207	/* 0x5A and 0x5B are reserved for a future ABI-breaking cleanup. */
	208	#define LTTNG_KERNEL_SESSION_STATEDUMP _IO(0xF6, 0x5C)
	209
	210	/* Channel FD ioctl */
	211	#define LTTNG_KERNEL_STREAM _IO(0xF6, 0x62)
	212	#define LTTNG_KERNEL_EVENT \
	213	_IOW(0xF6, 0x63, struct lttng_kernel_event)
	214	#define LTTNG_KERNEL_SYSCALL_MASK \
	215	_IOWR(0xF6, 0x64, struct lttng_kernel_syscall_mask)
	216
	217	/* Event and Channel FD ioctl */
	218	#define LTTNG_KERNEL_CONTEXT \
	219	_IOW(0xF6, 0x71, struct lttng_kernel_context)
	220
	221	/* Event, Channel and Session ioctl */
	222	#define LTTNG_KERNEL_ENABLE _IO(0xF6, 0x82)
	223	#define LTTNG_KERNEL_DISABLE _IO(0xF6, 0x83)
	224
	225	/* Event FD ioctl */
	226	#define LTTNG_KERNEL_FILTER _IO(0xF6, 0x90)
	227
	228	/* LTTng-specific ioctls for the lib ringbuffer */
	229	/* returns the timestamp begin of the current sub-buffer */
	230	#define LTTNG_RING_BUFFER_GET_TIMESTAMP_BEGIN _IOR(0xF6, 0x20, uint64_t)
	231	/* returns the timestamp end of the current sub-buffer */
	232	#define LTTNG_RING_BUFFER_GET_TIMESTAMP_END _IOR(0xF6, 0x21, uint64_t)
	233	/* returns the number of events discarded */
	234	#define LTTNG_RING_BUFFER_GET_EVENTS_DISCARDED _IOR(0xF6, 0x22, uint64_t)
	235	/* returns the packet payload size */
	236	#define LTTNG_RING_BUFFER_GET_CONTENT_SIZE _IOR(0xF6, 0x23, uint64_t)
	237	/* returns the actual packet size */
	238	#define LTTNG_RING_BUFFER_GET_PACKET_SIZE _IOR(0xF6, 0x24, uint64_t)
	239	/* returns the stream id */
	240	#define LTTNG_RING_BUFFER_GET_STREAM_ID _IOR(0xF6, 0x25, uint64_t)
	241	/* returns the current timestamp */
	242	#define LTTNG_RING_BUFFER_GET_CURRENT_TIMESTAMP _IOR(0xF6, 0x26, uint64_t)
	243	/* returns the packet sequence number */
	244	#define LTTNG_RING_BUFFER_GET_SEQ_NUM _IOR(0xF6, 0x27, uint64_t)
	245	/* returns the stream instance id */
	246	#define LTTNG_RING_BUFFER_INSTANCE_ID _IOR(0xF6, 0x28, uint64_t)
	247
	248	#ifdef CONFIG_COMPAT
	249	/* returns the timestamp begin of the current sub-buffer */
	250	#define LTTNG_RING_BUFFER_COMPAT_GET_TIMESTAMP_BEGIN \
	251	LTTNG_RING_BUFFER_GET_TIMESTAMP_BEGIN
	252	/* returns the timestamp end of the current sub-buffer */
	253	#define LTTNG_RING_BUFFER_COMPAT_GET_TIMESTAMP_END \
	254	LTTNG_RING_BUFFER_GET_TIMESTAMP_END
	255	/* returns the number of events discarded */
	256	#define LTTNG_RING_BUFFER_COMPAT_GET_EVENTS_DISCARDED \
	257	LTTNG_RING_BUFFER_GET_EVENTS_DISCARDED
	258	/* returns the packet payload size */
	259	#define LTTNG_RING_BUFFER_COMPAT_GET_CONTENT_SIZE \
	260	LTTNG_RING_BUFFER_GET_CONTENT_SIZE
	261	/* returns the actual packet size */
	262	#define LTTNG_RING_BUFFER_COMPAT_GET_PACKET_SIZE \
	263	LTTNG_RING_BUFFER_GET_PACKET_SIZE
	264	/* returns the stream id */
	265	#define LTTNG_RING_BUFFER_COMPAT_GET_STREAM_ID \
	266	LTTNG_RING_BUFFER_GET_STREAM_ID
	267	/* returns the current timestamp */
	268	#define LTTNG_RING_BUFFER_COMPAT_GET_CURRENT_TIMESTAMP \
	269	LTTNG_RING_BUFFER_GET_CURRENT_TIMESTAMP
	270	/* returns the packet sequence number */
	271	#define LTTNG_RING_BUFFER_COMPAT_GET_SEQ_NUM \
	272	LTTNG_RING_BUFFER_GET_SEQ_NUM
	273	/* returns the stream instance id */
	274	#define LTTNG_RING_BUFFER_COMPAT_INSTANCE_ID \
	275	LTTNG_RING_BUFFER_INSTANCE_ID
	276	#endif /* CONFIG_COMPAT */
	277
	278	#endif /* _LTTNG_ABI_H */