Fix: lttng-consumerd: cpu hotplug: send "streams_sent" command
[lttng-tools.git] / src / common / kernel-ctl / kernel-ioctl.h
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1/*
2 * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca>
3 * Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
4 *
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5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License, version 2 only,
7 * as published by the Free Software Foundation.
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8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
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14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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17 */
18
19#ifndef _LTT_KERNEL_IOCTL_H
20#define _LTT_KERNEL_IOCTL_H
21
29c62722 22#define LTTNG_MODULES_ABI_MAJOR_VERSION 2
cf0bcb51 23#define LTTNG_MODULES_ABI_MINOR_VERSION 3
c052142c 24
16421f6e 25/* Get a snapshot of the current ring buffer producer and consumer positions */
f3ed775e 26#define RING_BUFFER_SNAPSHOT _IO(0xF6, 0x00)
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27/* Get the consumer position (iteration start) */
28#define RING_BUFFER_SNAPSHOT_GET_CONSUMED _IOR(0xF6, 0x01, unsigned long)
29/* Get the producer position (iteration end) */
30#define RING_BUFFER_SNAPSHOT_GET_PRODUCED _IOR(0xF6, 0x02, unsigned long)
31/* Get exclusive read access to the specified sub-buffer position */
f3ed775e 32#define RING_BUFFER_GET_SUBBUF _IOW(0xF6, 0x03, unsigned long)
16421f6e 33/* Release exclusive sub-buffer access */
f3ed775e 34#define RING_BUFFER_PUT_SUBBUF _IO(0xF6, 0x04)
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35
36/* Get exclusive read access to the next sub-buffer that can be read. */
f3ed775e 37#define RING_BUFFER_GET_NEXT_SUBBUF _IO(0xF6, 0x05)
16421f6e 38/* Release exclusive sub-buffer access, move consumer forward. */
f3ed775e 39#define RING_BUFFER_PUT_NEXT_SUBBUF _IO(0xF6, 0x06)
16421f6e 40/* returns the size of the current sub-buffer, without padding (for mmap). */
f3ed775e 41#define RING_BUFFER_GET_SUBBUF_SIZE _IOR(0xF6, 0x07, unsigned long)
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42/* returns the size of the current sub-buffer, with padding (for splice). */
43#define RING_BUFFER_GET_PADDED_SUBBUF_SIZE _IOR(0xF6, 0x08, unsigned long)
44/* returns the maximum size for sub-buffers. */
45#define RING_BUFFER_GET_MAX_SUBBUF_SIZE _IOR(0xF6, 0x09, unsigned long)
46/* returns the length to mmap. */
f3ed775e 47#define RING_BUFFER_GET_MMAP_LEN _IOR(0xF6, 0x0A, unsigned long)
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48/* returns the offset of the subbuffer belonging to the mmap reader. */
49#define RING_BUFFER_GET_MMAP_READ_OFFSET _IOR(0xF6, 0x0B, unsigned long)
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50/* flush the current sub-buffer */
51#define RING_BUFFER_FLUSH _IO(0xF6, 0x0C)
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52/* Get the current version of the metadata cache (after a get_next). */
53#define RING_BUFFER_GET_METADATA_VERSION _IOR(0xF6, 0x0D, uint64_t)
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54/*
55 * Get a snapshot of the current ring buffer producer and consumer positions,
56 * regardless of whether or not the two positions are contained within the same
57 * sub-buffer.
58 */
59#define RING_BUFFER_SNAPSHOT_SAMPLE_POSITIONS _IO(0xF6, 0x0E)
00e2e675 60
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61/* returns the timestamp begin of the current sub-buffer */
62#define LTTNG_RING_BUFFER_GET_TIMESTAMP_BEGIN _IOR(0xF6, 0x20, uint64_t)
63/* returns the timestamp end of the current sub-buffer */
64#define LTTNG_RING_BUFFER_GET_TIMESTAMP_END _IOR(0xF6, 0x21, uint64_t)
65/* returns the number of events discarded */
66#define LTTNG_RING_BUFFER_GET_EVENTS_DISCARDED _IOR(0xF6, 0x22, uint64_t)
67/* returns the packet payload size */
68#define LTTNG_RING_BUFFER_GET_CONTENT_SIZE _IOR(0xF6, 0x23, uint64_t)
69/* returns the actual packet size */
70#define LTTNG_RING_BUFFER_GET_PACKET_SIZE _IOR(0xF6, 0x24, uint64_t)
71/* returns the stream id */
72#define LTTNG_RING_BUFFER_GET_STREAM_ID _IOR(0xF6, 0x25, uint64_t)
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73/* returns the current timestamp */
74#define LTTNG_RING_BUFFER_GET_CURRENT_TIMESTAMP _IOR(0xF6, 0x26, uint64_t)
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75/* returns the packet sequence number */
76#define LTTNG_RING_BUFFER_GET_SEQ_NUM _IOR(0xF6, 0x27, uint64_t)
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77/* returns the stream instance id */
78#define LTTNG_RING_BUFFER_INSTANCE_ID _IOR(0xF6, 0x28, uint64_t)
309167d2 79
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80/* Old ABI (without support for 32/64 bits compat) */
81/* LTTng file descriptor ioctl */
82#define LTTNG_KERNEL_OLD_SESSION _IO(0xF6, 0x40)
83#define LTTNG_KERNEL_OLD_TRACER_VERSION \
84 _IOR(0xF6, 0x41, struct lttng_kernel_old_tracer_version)
85#define LTTNG_KERNEL_OLD_TRACEPOINT_LIST _IO(0xF6, 0x42)
86#define LTTNG_KERNEL_OLD_WAIT_QUIESCENT _IO(0xF6, 0x43)
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87
88/* Session FD ioctl */
89#define LTTNG_KERNEL_OLD_METADATA \
90 _IOW(0xF6, 0x50, struct lttng_kernel_old_channel)
91#define LTTNG_KERNEL_OLD_CHANNEL \
92 _IOW(0xF6, 0x51, struct lttng_kernel_old_channel)
93#define LTTNG_KERNEL_OLD_SESSION_START _IO(0xF6, 0x52)
94#define LTTNG_KERNEL_OLD_SESSION_STOP _IO(0xF6, 0x53)
95
96/* Channel FD ioctl */
97#define LTTNG_KERNEL_OLD_STREAM _IO(0xF6, 0x60)
98#define LTTNG_KERNEL_OLD_EVENT \
99 _IOW(0xF6, 0x61, struct lttng_kernel_old_event)
f3ed775e 100
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101/* Event and Channel FD ioctl */
102#define LTTNG_KERNEL_OLD_CONTEXT \
103 _IOW(0xF6, 0x70, struct lttng_kernel_old_context)
104
105/* Event, Channel and Session ioctl */
106#define LTTNG_KERNEL_OLD_ENABLE _IO(0xF6, 0x80)
107#define LTTNG_KERNEL_OLD_DISABLE _IO(0xF6, 0x81)
108
109
110/* Current ABI (with suport for 32/64 bits compat) */
857aa172 111/* LTTng file descriptor ioctl */
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112#define LTTNG_KERNEL_SESSION _IO(0xF6, 0x45)
113#define LTTNG_KERNEL_TRACER_VERSION \
114 _IOR(0xF6, 0x46, struct lttng_kernel_tracer_version)
d02666a9 115#define LTTNG_KERNEL_TRACEPOINT_LIST _IO(0xF6, 0x47)
4dbc372b 116#define LTTNG_KERNEL_WAIT_QUIESCENT _IO(0xF6, 0x48)
90d13b3d 117#define LTTNG_KERNEL_SYSCALL_LIST _IO(0xF6, 0x4A)
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118#define LTTNG_KERNEL_TRACER_ABI_VERSION \
119 _IOR(0xF6, 0x4B, struct lttng_kernel_tracer_abi_version)
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120
121/* Session FD ioctl */
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122#define LTTNG_KERNEL_METADATA \
123 _IOW(0xF6, 0x54, struct lttng_kernel_channel)
124#define LTTNG_KERNEL_CHANNEL \
125 _IOW(0xF6, 0x55, struct lttng_kernel_channel)
126#define LTTNG_KERNEL_SESSION_START _IO(0xF6, 0x56)
127#define LTTNG_KERNEL_SESSION_STOP _IO(0xF6, 0x57)
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128#define LTTNG_KERNEL_SESSION_TRACK_PID \
129 _IOR(0xF6, 0x58, int32_t)
130#define LTTNG_KERNEL_SESSION_UNTRACK_PID \
131 _IOR(0xF6, 0x59, int32_t)
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132/*
133 * ioctl 0x58 and 0x59 are duplicated here. It works, since _IOR vs _IO
134 * are generating two different ioctl numbers, but this was not done on
135 * purpose. We should generally try to avoid those duplications.
136 */
a5dfbb9d 137#define LTTNG_KERNEL_SESSION_LIST_TRACKER_PIDS _IO(0xF6, 0x58)
93ec662e 138#define LTTNG_KERNEL_SESSION_METADATA_REGEN _IO(0xF6, 0x59)
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139/* 0x5A and 0x5B are reserved for a future ABI-breaking cleanup. */
140#define LTTNG_KERNEL_SESSION_STATEDUMP _IO(0xF6, 0x5C)
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141
142/* Channel FD ioctl */
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143#define LTTNG_KERNEL_STREAM _IO(0xF6, 0x62)
144#define LTTNG_KERNEL_EVENT \
145 _IOW(0xF6, 0x63, struct lttng_kernel_event)
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146#define LTTNG_KERNEL_SYSCALL_MASK \
147 _IOWR(0xF6, 0x64, struct lttng_kernel_syscall_mask)
f3ed775e 148
857aa172 149/* Event and Channel FD ioctl */
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150#define LTTNG_KERNEL_CONTEXT \
151 _IOW(0xF6, 0x71, struct lttng_kernel_context)
857aa172 152
f3ed775e 153/* Event, Channel and Session ioctl */
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154#define LTTNG_KERNEL_ENABLE _IO(0xF6, 0x82)
155#define LTTNG_KERNEL_DISABLE _IO(0xF6, 0x83)
16421f6e 156
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157/* Event FD ioctl */
158#define LTTNG_KERNEL_FILTER _IO(0xF6, 0x90)
159
16421f6e 160#endif /* _LTT_KERNEL_IOCTL_H */
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