Backported to glibc 2.8
[lttng-tools.git] / src / common / kernel-ctl / kernel-ioctl.h
1 /*
2 * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca>
3 * Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
4 *
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.
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 *
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.
17 */
18
19 #ifndef _LTT_KERNEL_IOCTL_H
20 #define _LTT_KERNEL_IOCTL_H
21
22 /* Get a snapshot of the current ring buffer producer and consumer positions */
23 #define RING_BUFFER_SNAPSHOT _IO(0xF6, 0x00)
24 /* Get the consumer position (iteration start) */
25 #define RING_BUFFER_SNAPSHOT_GET_CONSUMED _IOR(0xF6, 0x01, unsigned long)
26 /* Get the producer position (iteration end) */
27 #define RING_BUFFER_SNAPSHOT_GET_PRODUCED _IOR(0xF6, 0x02, unsigned long)
28 /* Get exclusive read access to the specified sub-buffer position */
29 #define RING_BUFFER_GET_SUBBUF _IOW(0xF6, 0x03, unsigned long)
30 /* Release exclusive sub-buffer access */
31 #define RING_BUFFER_PUT_SUBBUF _IO(0xF6, 0x04)
32
33 /* Get exclusive read access to the next sub-buffer that can be read. */
34 #define RING_BUFFER_GET_NEXT_SUBBUF _IO(0xF6, 0x05)
35 /* Release exclusive sub-buffer access, move consumer forward. */
36 #define RING_BUFFER_PUT_NEXT_SUBBUF _IO(0xF6, 0x06)
37 /* returns the size of the current sub-buffer, without padding (for mmap). */
38 #define RING_BUFFER_GET_SUBBUF_SIZE _IOR(0xF6, 0x07, unsigned long)
39 /* returns the size of the current sub-buffer, with padding (for splice). */
40 #define RING_BUFFER_GET_PADDED_SUBBUF_SIZE _IOR(0xF6, 0x08, unsigned long)
41 /* returns the maximum size for sub-buffers. */
42 #define RING_BUFFER_GET_MAX_SUBBUF_SIZE _IOR(0xF6, 0x09, unsigned long)
43 /* returns the length to mmap. */
44 #define RING_BUFFER_GET_MMAP_LEN _IOR(0xF6, 0x0A, unsigned long)
45 /* returns the offset of the subbuffer belonging to the mmap reader. */
46 #define RING_BUFFER_GET_MMAP_READ_OFFSET _IOR(0xF6, 0x0B, unsigned long)
47 /* flush the current sub-buffer */
48 #define RING_BUFFER_FLUSH _IO(0xF6, 0x0C)
49
50 /* returns the timestamp begin of the current sub-buffer */
51 #define LTTNG_RING_BUFFER_GET_TIMESTAMP_BEGIN _IOR(0xF6, 0x20, uint64_t)
52 /* returns the timestamp end of the current sub-buffer */
53 #define LTTNG_RING_BUFFER_GET_TIMESTAMP_END _IOR(0xF6, 0x21, uint64_t)
54 /* returns the number of events discarded */
55 #define LTTNG_RING_BUFFER_GET_EVENTS_DISCARDED _IOR(0xF6, 0x22, uint64_t)
56 /* returns the packet payload size */
57 #define LTTNG_RING_BUFFER_GET_CONTENT_SIZE _IOR(0xF6, 0x23, uint64_t)
58 /* returns the actual packet size */
59 #define LTTNG_RING_BUFFER_GET_PACKET_SIZE _IOR(0xF6, 0x24, uint64_t)
60 /* returns the stream id */
61 #define LTTNG_RING_BUFFER_GET_STREAM_ID _IOR(0xF6, 0x25, uint64_t)
62 /* returns the current timestamp */
63 #define LTTNG_RING_BUFFER_GET_CURRENT_TIMESTAMP _IOR(0xF6, 0x26, uint64_t)
64
65 /* Old ABI (without support for 32/64 bits compat) */
66 /* LTTng file descriptor ioctl */
67 #define LTTNG_KERNEL_OLD_SESSION _IO(0xF6, 0x40)
68 #define LTTNG_KERNEL_OLD_TRACER_VERSION \
69 _IOR(0xF6, 0x41, struct lttng_kernel_old_tracer_version)
70 #define LTTNG_KERNEL_OLD_TRACEPOINT_LIST _IO(0xF6, 0x42)
71 #define LTTNG_KERNEL_OLD_WAIT_QUIESCENT _IO(0xF6, 0x43)
72 #define LTTNG_KERNEL_OLD_CALIBRATE \
73 _IOWR(0xF6, 0x44, struct lttng_kernel_old_calibrate)
74
75 /* Session FD ioctl */
76 #define LTTNG_KERNEL_OLD_METADATA \
77 _IOW(0xF6, 0x50, struct lttng_kernel_old_channel)
78 #define LTTNG_KERNEL_OLD_CHANNEL \
79 _IOW(0xF6, 0x51, struct lttng_kernel_old_channel)
80 #define LTTNG_KERNEL_OLD_SESSION_START _IO(0xF6, 0x52)
81 #define LTTNG_KERNEL_OLD_SESSION_STOP _IO(0xF6, 0x53)
82
83 /* Channel FD ioctl */
84 #define LTTNG_KERNEL_OLD_STREAM _IO(0xF6, 0x60)
85 #define LTTNG_KERNEL_OLD_EVENT \
86 _IOW(0xF6, 0x61, struct lttng_kernel_old_event)
87
88 /* Event and Channel FD ioctl */
89 #define LTTNG_KERNEL_OLD_CONTEXT \
90 _IOW(0xF6, 0x70, struct lttng_kernel_old_context)
91
92 /* Event, Channel and Session ioctl */
93 #define LTTNG_KERNEL_OLD_ENABLE _IO(0xF6, 0x80)
94 #define LTTNG_KERNEL_OLD_DISABLE _IO(0xF6, 0x81)
95
96
97 /* Current ABI (with suport for 32/64 bits compat) */
98 /* LTTng file descriptor ioctl */
99 #define LTTNG_KERNEL_SESSION _IO(0xF6, 0x45)
100 #define LTTNG_KERNEL_TRACER_VERSION \
101 _IOR(0xF6, 0x46, struct lttng_kernel_tracer_version)
102 #define LTTNG_KERNEL_TRACEPOINT_LIST _IO(0xF6, 0x47)
103 #define LTTNG_KERNEL_WAIT_QUIESCENT _IO(0xF6, 0x48)
104 #define LTTNG_KERNEL_CALIBRATE \
105 _IOWR(0xF6, 0x49, struct lttng_kernel_calibrate)
106
107 /* Session FD ioctl */
108 #define LTTNG_KERNEL_METADATA \
109 _IOW(0xF6, 0x54, struct lttng_kernel_channel)
110 #define LTTNG_KERNEL_CHANNEL \
111 _IOW(0xF6, 0x55, struct lttng_kernel_channel)
112 #define LTTNG_KERNEL_SESSION_START _IO(0xF6, 0x56)
113 #define LTTNG_KERNEL_SESSION_STOP _IO(0xF6, 0x57)
114
115 /* Channel FD ioctl */
116 #define LTTNG_KERNEL_STREAM _IO(0xF6, 0x62)
117 #define LTTNG_KERNEL_EVENT \
118 _IOW(0xF6, 0x63, struct lttng_kernel_event)
119
120 /* Event and Channel FD ioctl */
121 #define LTTNG_KERNEL_CONTEXT \
122 _IOW(0xF6, 0x71, struct lttng_kernel_context)
123
124 /* Event, Channel and Session ioctl */
125 #define LTTNG_KERNEL_ENABLE _IO(0xF6, 0x82)
126 #define LTTNG_KERNEL_DISABLE _IO(0xF6, 0x83)
127
128 #endif /* _LTT_KERNEL_IOCTL_H */
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