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 #define LTTNG_KERNEL_SYSCALL_LIST               _IO(0xF6, 0x4A)
 107
 108 /* Session FD ioctl */
 109 #define LTTNG_KERNEL_METADATA                   \
 110         _IOW(0xF6, 0x54, struct lttng_kernel_channel)
 111 #define LTTNG_KERNEL_CHANNEL                    \
 112         _IOW(0xF6, 0x55, struct lttng_kernel_channel)
 113 #define LTTNG_KERNEL_SESSION_START              _IO(0xF6, 0x56)
 114 #define LTTNG_KERNEL_SESSION_STOP               _IO(0xF6, 0x57)
 115
 116 /* Channel FD ioctl */
 117 #define LTTNG_KERNEL_STREAM                     _IO(0xF6, 0x62)
 118 #define LTTNG_KERNEL_EVENT                      \
 119         _IOW(0xF6, 0x63, struct lttng_kernel_event)
 120 #define LTTNG_KERNEL_SYSCALL_MASK               \
 121         _IOWR(0xF6, 0x64, struct lttng_kernel_syscall_mask)
 122
 123 /* Event and Channel FD ioctl */
 124 #define LTTNG_KERNEL_CONTEXT                    \
 125         _IOW(0xF6, 0x71, struct lttng_kernel_context)
 126
 127 /* Event, Channel and Session ioctl */
 128 #define LTTNG_KERNEL_ENABLE                     _IO(0xF6, 0x82)
 129 #define LTTNG_KERNEL_DISABLE                    _IO(0xF6, 0x83)
 130
 131 #endif /* _LTT_KERNEL_IOCTL_H */