[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		2

#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.
 *
 * Operations applying to the current sub-buffer need to occur between
 * a get/put or get_next/put_next ioctl pair.
 */

/* 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 of the current sub-buffer */
#define LTTNG_RING_BUFFER_GET_EVENTS_DISCARDED	_IOR(0xF6, 0x22, uint64_t)
/* returns the packet payload size of the current sub-buffer */
#define LTTNG_RING_BUFFER_GET_CONTENT_SIZE	_IOR(0xF6, 0x23, uint64_t)
/* returns the packet size of the current sub-buffer*/
#define LTTNG_RING_BUFFER_GET_PACKET_SIZE	_IOR(0xF6, 0x24, uint64_t)
/* returns the stream id (invariant for the stream) */
#define LTTNG_RING_BUFFER_GET_STREAM_ID		_IOR(0xF6, 0x25, uint64_t)
/* returns the current timestamp as perceived from the tracer */
#define LTTNG_RING_BUFFER_GET_CURRENT_TIMESTAMP	_IOR(0xF6, 0x26, uint64_t)
/* returns the packet sequence number of the current sub-buffer */
#define LTTNG_RING_BUFFER_GET_SEQ_NUM		_IOR(0xF6, 0x27, uint64_t)
/* returns the stream instance id (invariant for the stream) */
#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 of the current sub-buffer */
#define LTTNG_RING_BUFFER_COMPAT_GET_EVENTS_DISCARDED \
	LTTNG_RING_BUFFER_GET_EVENTS_DISCARDED
/* returns the packet payload size of the current sub-buffer */
#define LTTNG_RING_BUFFER_COMPAT_GET_CONTENT_SIZE \
	LTTNG_RING_BUFFER_GET_CONTENT_SIZE
/* returns the packet size of the current sub-buffer */
#define LTTNG_RING_BUFFER_COMPAT_GET_PACKET_SIZE \
	LTTNG_RING_BUFFER_GET_PACKET_SIZE
/* returns the stream id (invariant for the stream) */
#define LTTNG_RING_BUFFER_COMPAT_GET_STREAM_ID \
	LTTNG_RING_BUFFER_GET_STREAM_ID
/* returns the current timestamp as perceived from the tracer */
#define LTTNG_RING_BUFFER_COMPAT_GET_CURRENT_TIMESTAMP \
	LTTNG_RING_BUFFER_GET_CURRENT_TIMESTAMP
/* returns the packet sequence number of the current sub-buffer */
#define LTTNG_RING_BUFFER_COMPAT_GET_SEQ_NUM	\
	LTTNG_RING_BUFFER_GET_SEQ_NUM
/* returns the stream instance id (invariant for the stream) */
#define LTTNG_RING_BUFFER_COMPAT_INSTANCE_ID	\
	LTTNG_RING_BUFFER_INSTANCE_ID
#endif /* CONFIG_COMPAT */

#endif /* _LTTNG_ABI_H */
Commit	Line	Data
e8951e63 MD	1	#ifndef _LTTNG_ABI_H
e8951e63 MD	2	#define _LTTNG_ABI_H
57a13317 MD	3
57a13317 MD	4	/*
e8951e63	5	* lttng-abi.h
57a13317	6	*
80996790	7	* LTTng ABI header
17baffe2	8	*
886d51a3 MD	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
57a13317 MD	24	*/
	25
	26	#include <linux/fs.h>
	27
42cabb80 MD	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	*/
3c997079	32	#define LTTNG_MODULES_ABI_MAJOR_VERSION 2
35d30e5b	33	#define LTTNG_MODULES_ABI_MINOR_VERSION 2
42cabb80	34
f8695253	35	#define LTTNG_KERNEL_SYM_NAME_LEN 256
d6d808f3	36
38d024ae	37	enum lttng_kernel_instrumentation {
4c183524 MD	38	LTTNG_KERNEL_TRACEPOINT = 0,
	39	LTTNG_KERNEL_KPROBE = 1,
	40	LTTNG_KERNEL_FUNCTION = 2,
7371f44c	41	LTTNG_KERNEL_KRETPROBE = 3,
1ec65de1	42	LTTNG_KERNEL_NOOP = 4, /* not hooked */
43880ee8	43	LTTNG_KERNEL_SYSCALL = 5,
57a13317 MD	44	};
57a13317 MD	45
96ba7208 JD	46	/*
	47	* LTTng consumer mode
	48	*/
	49	enum lttng_kernel_output {
	50	LTTNG_KERNEL_SPLICE = 0,
	51	LTTNG_KERNEL_MMAP = 1,
	52	};
	53
57a13317 MD	54	/*
	55	* LTTng DebugFS ABI structures.
	56	*/
8e099bae	57	#define LTTNG_KERNEL_CHANNEL_PADDING LTTNG_KERNEL_SYM_NAME_LEN + 32
38d024ae	58	struct lttng_kernel_channel {
9e245ead	59	uint64_t subbuf_size; /* in bytes */
80c16bcf	60	uint64_t num_subbuf;
9e245ead MD	61	unsigned int switch_timer_interval; /* usecs */
9e245ead MD	62	unsigned int read_timer_interval; /* usecs */
96ba7208	63	enum lttng_kernel_output output; /* splice, mmap */
6dccd6c1	64	int overwrite; /* 1: overwrite, 0: discard */
8e099bae	65	char padding[LTTNG_KERNEL_CHANNEL_PADDING];
1a598612	66	} __attribute__((packed));
57a13317	67
7371f44c MD	68	struct lttng_kernel_kretprobe {
	69	uint64_t addr;
	70
	71	uint64_t offset;
f8695253	72	char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
1a598612	73	} __attribute__((packed));
7371f44c	74
38d024ae MD	75	/*
	76	* Either addr is used, or symbol_name and offset.
	77	*/
	78	struct lttng_kernel_kprobe {
80c16bcf	79	uint64_t addr;
38d024ae	80
80c16bcf	81	uint64_t offset;
f8695253	82	char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
1a598612	83	} __attribute__((packed));
d6d808f3	84
f17701fb	85	struct lttng_kernel_function_tracer {
f8695253	86	char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
1a598612	87	} __attribute__((packed));
f17701fb	88
43880ee8	89	/*
3c997079	90	* For syscall tracing, name = "*" means "enable all".
43880ee8	91	*/
8e099bae MD	92	#define LTTNG_KERNEL_EVENT_PADDING1 16
8e099bae MD	93	#define LTTNG_KERNEL_EVENT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
d6d808f3	94	struct lttng_kernel_event {
f8695253	95	char name[LTTNG_KERNEL_SYM_NAME_LEN]; /* event name */
d6d808f3	96	enum lttng_kernel_instrumentation instrumentation;
8e099bae MD	97	char padding[LTTNG_KERNEL_EVENT_PADDING1];
8e099bae MD	98
d6d808f3 MD	99	/* Per instrumentation type configuration */
d6d808f3 MD	100	union {
7371f44c	101	struct lttng_kernel_kretprobe kretprobe;
d6d808f3	102	struct lttng_kernel_kprobe kprobe;
f17701fb	103	struct lttng_kernel_function_tracer ftrace;
8e099bae	104	char padding[LTTNG_KERNEL_EVENT_PADDING2];
d6d808f3	105	} u;
1a598612	106	} __attribute__((packed));
c099397a	107
80c16bcf	108	struct lttng_kernel_tracer_version {
c6c9e10f MD	109	uint32_t major;
c6c9e10f MD	110	uint32_t minor;
80c16bcf	111	uint32_t patchlevel;
1a598612	112	} __attribute__((packed));
80c16bcf	113
42cabb80 MD	114	struct lttng_kernel_tracer_abi_version {
	115	uint32_t major;
	116	uint32_t minor;
	117	} __attribute__((packed));
	118
3db41b2c MD	119	enum lttng_kernel_calibrate_type {
3db41b2c MD	120	LTTNG_KERNEL_CALIBRATE_KRETPROBE,
57105fc2 MD	121	};
57105fc2 MD	122
3db41b2c MD	123	struct lttng_kernel_calibrate {
3db41b2c MD	124	enum lttng_kernel_calibrate_type type; /* type (input) */
1a598612	125	} __attribute__((packed));
57105fc2	126
12e579db MD	127	struct lttng_kernel_syscall_mask {
	128	uint32_t len; /* in bits */
	129	char mask[];
	130	} __attribute__((packed));
	131
12a313a5	132	enum lttng_kernel_context_type {
4c183524 MD	133	LTTNG_KERNEL_CONTEXT_PID = 0,
4c183524 MD	134	LTTNG_KERNEL_CONTEXT_PERF_COUNTER = 1,
a2563e83	135	LTTNG_KERNEL_CONTEXT_PROCNAME = 2,
4c183524 MD	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,
975da2c0	143	LTTNG_KERNEL_CONTEXT_HOSTNAME = 10,
b3699d90	144	LTTNG_KERNEL_CONTEXT_CPU_ID = 11,
79150a49 JD	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,
8070f5c0 MD	149	};
	150
	151	struct lttng_kernel_perf_counter_ctx {
	152	uint32_t type;
	153	uint64_t config;
f8695253	154	char name[LTTNG_KERNEL_SYM_NAME_LEN];
1a598612	155	} __attribute__((packed));
8070f5c0	156
8e099bae MD	157	#define LTTNG_KERNEL_CONTEXT_PADDING1 16
8e099bae MD	158	#define LTTNG_KERNEL_CONTEXT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
8070f5c0	159	struct lttng_kernel_context {
12a313a5	160	enum lttng_kernel_context_type ctx;
8e099bae MD	161	char padding[LTTNG_KERNEL_CONTEXT_PADDING1];
8e099bae MD	162
8070f5c0	163	union {
8070f5c0	164	struct lttng_kernel_perf_counter_ctx perf_counter;
8e099bae	165	char padding[LTTNG_KERNEL_CONTEXT_PADDING2];
8070f5c0	166	} u;
1a598612	167	} __attribute__((packed));
8070f5c0	168
f127e61e	169	#define LTTNG_KERNEL_FILTER_BYTECODE_MAX_LEN 65536
07dfc1d0 MD	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
33749530	177	/* LTTng file descriptor ioctl */
6dccd6c1	178	#define LTTNG_KERNEL_SESSION _IO(0xF6, 0x45)
33749530	179	#define LTTNG_KERNEL_TRACER_VERSION \
6dccd6c1 JD	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)
57105fc2	183	#define LTTNG_KERNEL_CALIBRATE \
6dccd6c1	184	_IOWR(0xF6, 0x49, struct lttng_kernel_calibrate)
29c956bb	185	#define LTTNG_KERNEL_SYSCALL_LIST _IO(0xF6, 0x4A)
42cabb80 MD	186	#define LTTNG_KERNEL_TRACER_ABI_VERSION \
42cabb80 MD	187	_IOR(0xF6, 0x4B, struct lttng_kernel_tracer_abi_version)
33749530 MD	188
	189	/* Session FD ioctl */
	190	#define LTTNG_KERNEL_METADATA \
6dccd6c1	191	_IOW(0xF6, 0x54, struct lttng_kernel_channel)
ab2277d6	192	#define LTTNG_KERNEL_CHANNEL \
6dccd6c1 JD	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)
e0130fab MD	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)
fe40f016 MD	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	*/
7e6f9ef6	205	#define LTTNG_KERNEL_SESSION_LIST_TRACKER_PIDS _IO(0xF6, 0x58)
9616f0bf	206	#define LTTNG_KERNEL_SESSION_METADATA_REGEN _IO(0xF6, 0x59)
601252cf MD	207	/* 0x5A and 0x5B are reserved for a future ABI-breaking cleanup. */
601252cf MD	208	#define LTTNG_KERNEL_SESSION_STATEDUMP _IO(0xF6, 0x5C)
33749530 MD	209
33749530 MD	210	/* Channel FD ioctl */
6dccd6c1	211	#define LTTNG_KERNEL_STREAM _IO(0xF6, 0x62)
ab2277d6	212	#define LTTNG_KERNEL_EVENT \
6dccd6c1	213	_IOW(0xF6, 0x63, struct lttng_kernel_event)
12e579db MD	214	#define LTTNG_KERNEL_SYSCALL_MASK \
12e579db MD	215	_IOWR(0xF6, 0x64, struct lttng_kernel_syscall_mask)
57a13317	216
8070f5c0 MD	217	/* Event and Channel FD ioctl */
8070f5c0 MD	218	#define LTTNG_KERNEL_CONTEXT \
6dccd6c1	219	_IOW(0xF6, 0x71, struct lttng_kernel_context)
8070f5c0	220
e64957da	221	/* Event, Channel and Session ioctl */
6dccd6c1 JD	222	#define LTTNG_KERNEL_ENABLE _IO(0xF6, 0x82)
6dccd6c1 JD	223	#define LTTNG_KERNEL_DISABLE _IO(0xF6, 0x83)
e64957da	224
07dfc1d0 MD	225	/* Event FD ioctl */
	226	#define LTTNG_KERNEL_FILTER _IO(0xF6, 0x90)
	227
cd727a85 MD	228	/*
	229	* LTTng-specific ioctls for the lib ringbuffer.
	230	*
	231	* Operations applying to the current sub-buffer need to occur between
	232	* a get/put or get_next/put_next ioctl pair.
	233	*/
	234
3b731ab1 JD	235	/* returns the timestamp begin of the current sub-buffer */
	236	#define LTTNG_RING_BUFFER_GET_TIMESTAMP_BEGIN _IOR(0xF6, 0x20, uint64_t)
	237	/* returns the timestamp end of the current sub-buffer */
	238	#define LTTNG_RING_BUFFER_GET_TIMESTAMP_END _IOR(0xF6, 0x21, uint64_t)
cd727a85	239	/* returns the number of events discarded of the current sub-buffer */
3b731ab1	240	#define LTTNG_RING_BUFFER_GET_EVENTS_DISCARDED _IOR(0xF6, 0x22, uint64_t)
cd727a85	241	/* returns the packet payload size of the current sub-buffer */
3b731ab1	242	#define LTTNG_RING_BUFFER_GET_CONTENT_SIZE _IOR(0xF6, 0x23, uint64_t)
cd727a85	243	/* returns the packet size of the current sub-buffer*/
3b731ab1	244	#define LTTNG_RING_BUFFER_GET_PACKET_SIZE _IOR(0xF6, 0x24, uint64_t)
cd727a85	245	/* returns the stream id (invariant for the stream) */
3b731ab1	246	#define LTTNG_RING_BUFFER_GET_STREAM_ID _IOR(0xF6, 0x25, uint64_t)
cd727a85	247	/* returns the current timestamp as perceived from the tracer */
2348ca17	248	#define LTTNG_RING_BUFFER_GET_CURRENT_TIMESTAMP _IOR(0xF6, 0x26, uint64_t)
cd727a85	249	/* returns the packet sequence number of the current sub-buffer */
5b3cf4f9	250	#define LTTNG_RING_BUFFER_GET_SEQ_NUM _IOR(0xF6, 0x27, uint64_t)
cd727a85	251	/* returns the stream instance id (invariant for the stream) */
5594698f	252	#define LTTNG_RING_BUFFER_INSTANCE_ID _IOR(0xF6, 0x28, uint64_t)
3b731ab1 JD	253
	254	#ifdef CONFIG_COMPAT
	255	/* returns the timestamp begin of the current sub-buffer */
	256	#define LTTNG_RING_BUFFER_COMPAT_GET_TIMESTAMP_BEGIN \
	257	LTTNG_RING_BUFFER_GET_TIMESTAMP_BEGIN
	258	/* returns the timestamp end of the current sub-buffer */
	259	#define LTTNG_RING_BUFFER_COMPAT_GET_TIMESTAMP_END \
	260	LTTNG_RING_BUFFER_GET_TIMESTAMP_END
cd727a85	261	/* returns the number of events discarded of the current sub-buffer */
3b731ab1 JD	262	#define LTTNG_RING_BUFFER_COMPAT_GET_EVENTS_DISCARDED \
3b731ab1 JD	263	LTTNG_RING_BUFFER_GET_EVENTS_DISCARDED
cd727a85	264	/* returns the packet payload size of the current sub-buffer */
3b731ab1 JD	265	#define LTTNG_RING_BUFFER_COMPAT_GET_CONTENT_SIZE \
3b731ab1 JD	266	LTTNG_RING_BUFFER_GET_CONTENT_SIZE
cd727a85	267	/* returns the packet size of the current sub-buffer */
3b731ab1 JD	268	#define LTTNG_RING_BUFFER_COMPAT_GET_PACKET_SIZE \
3b731ab1 JD	269	LTTNG_RING_BUFFER_GET_PACKET_SIZE
cd727a85	270	/* returns the stream id (invariant for the stream) */
3b731ab1 JD	271	#define LTTNG_RING_BUFFER_COMPAT_GET_STREAM_ID \
3b731ab1 JD	272	LTTNG_RING_BUFFER_GET_STREAM_ID
cd727a85	273	/* returns the current timestamp as perceived from the tracer */
2348ca17 JD	274	#define LTTNG_RING_BUFFER_COMPAT_GET_CURRENT_TIMESTAMP \
2348ca17 JD	275	LTTNG_RING_BUFFER_GET_CURRENT_TIMESTAMP
cd727a85	276	/* returns the packet sequence number of the current sub-buffer */
5b3cf4f9 JD	277	#define LTTNG_RING_BUFFER_COMPAT_GET_SEQ_NUM \
5b3cf4f9 JD	278	LTTNG_RING_BUFFER_GET_SEQ_NUM
cd727a85	279	/* returns the stream instance id (invariant for the stream) */
5594698f JD	280	#define LTTNG_RING_BUFFER_COMPAT_INSTANCE_ID \
5594698f JD	281	LTTNG_RING_BUFFER_INSTANCE_ID
3b731ab1 JD	282	#endif /* CONFIG_COMPAT */
3b731ab1 JD	283
e8951e63	284	#endif /* _LTTNG_ABI_H */