lttng-abi-old.h

   1 #ifndef _LTTNG_ABI_OLD_H
   2 #define _LTTNG_ABI_OLD_H
   3
   4 /*
   5  * lttng-abi-old.h
   6  *
   7  * LTTng old ABI header (without support for compat 32/64 bits)
   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 #include <lttng-abi.h>
  28
  29 /*
  30  * LTTng DebugFS ABI structures.
  31  */
  32 #define LTTNG_KERNEL_OLD_CHANNEL_PADDING        LTTNG_KERNEL_SYM_NAME_LEN + 32
  33 struct lttng_kernel_old_channel {
  34         int overwrite;                          /* 1: overwrite, 0: discard */
  35         uint64_t subbuf_size;                   /* in bytes */
  36         uint64_t num_subbuf;
  37         unsigned int switch_timer_interval;     /* usecs */
  38         unsigned int read_timer_interval;       /* usecs */
  39         enum lttng_kernel_output output;        /* splice, mmap */
  40         char padding[LTTNG_KERNEL_OLD_CHANNEL_PADDING];
  41 };
  42
  43 struct lttng_kernel_old_kretprobe {
  44         uint64_t addr;
  45
  46         uint64_t offset;
  47         char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
  48 };
  49
  50 /*
  51  * Either addr is used, or symbol_name and offset.
  52  */
  53 struct lttng_kernel_old_kprobe {
  54         uint64_t addr;
  55
  56         uint64_t offset;
  57         char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
  58 };
  59
  60 struct lttng_kernel_old_function_tracer {
  61         char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
  62 };
  63
  64 /*
  65  * For syscall tracing, name = '\0' means "enable all".
  66  */
  67 #define LTTNG_KERNEL_OLD_EVENT_PADDING1 16
  68 #define LTTNG_KERNEL_OLD_EVENT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
  69 struct lttng_kernel_old_event {
  70         char name[LTTNG_KERNEL_SYM_NAME_LEN];   /* event name */
  71         enum lttng_kernel_instrumentation instrumentation;
  72         char padding[LTTNG_KERNEL_OLD_EVENT_PADDING1];
  73
  74         /* Per instrumentation type configuration */
  75         union {
  76                 struct lttng_kernel_old_kretprobe kretprobe;
  77                 struct lttng_kernel_old_kprobe kprobe;
  78                 struct lttng_kernel_old_function_tracer ftrace;
  79                 char padding[LTTNG_KERNEL_OLD_EVENT_PADDING2];
  80         } u;
  81 };
  82
  83 struct lttng_kernel_old_tracer_version {
  84         uint32_t major;
  85         uint32_t minor;
  86         uint32_t patchlevel;
  87 };
  88
  89 struct lttng_kernel_old_calibrate {
  90         enum lttng_kernel_calibrate_type type;  /* type (input) */
  91 };
  92
  93 struct lttng_kernel_old_perf_counter_ctx {
  94         uint32_t type;
  95         uint64_t config;
  96         char name[LTTNG_KERNEL_SYM_NAME_LEN];
  97 };
  98
  99 #define LTTNG_KERNEL_OLD_CONTEXT_PADDING1       16
 100 #define LTTNG_KERNEL_OLD_CONTEXT_PADDING2       LTTNG_KERNEL_SYM_NAME_LEN + 32
 101 struct lttng_kernel_old_context {
 102         enum lttng_kernel_context_type ctx;
 103         char padding[LTTNG_KERNEL_OLD_CONTEXT_PADDING1];
 104
 105         union {
 106                 struct lttng_kernel_old_perf_counter_ctx perf_counter;
 107                 char padding[LTTNG_KERNEL_OLD_CONTEXT_PADDING2];
 108         } u;
 109 };
 110
 111 /* LTTng file descriptor ioctl */
 112 #define LTTNG_KERNEL_OLD_SESSION                _IO(0xF6, 0x40)
 113 #define LTTNG_KERNEL_OLD_TRACER_VERSION         \
 114         _IOR(0xF6, 0x41, struct lttng_kernel_old_tracer_version)
 115 #define LTTNG_KERNEL_OLD_TRACEPOINT_LIST        _IO(0xF6, 0x42)
 116 #define LTTNG_KERNEL_OLD_WAIT_QUIESCENT         _IO(0xF6, 0x43)
 117 #define LTTNG_KERNEL_OLD_CALIBRATE              \
 118         _IOWR(0xF6, 0x44, struct lttng_kernel_old_calibrate)
 119
 120 /* Session FD ioctl */
 121 #define LTTNG_KERNEL_OLD_METADATA               \
 122         _IOW(0xF6, 0x50, struct lttng_kernel_old_channel)
 123 #define LTTNG_KERNEL_OLD_CHANNEL                \
 124         _IOW(0xF6, 0x51, struct lttng_kernel_old_channel)
 125 #define LTTNG_KERNEL_OLD_SESSION_START          _IO(0xF6, 0x52)
 126 #define LTTNG_KERNEL_OLD_SESSION_STOP           _IO(0xF6, 0x53)
 127
 128 /* Channel FD ioctl */
 129 #define LTTNG_KERNEL_OLD_STREAM                 _IO(0xF6, 0x60)
 130 #define LTTNG_KERNEL_OLD_EVENT                  \
 131         _IOW(0xF6, 0x61, struct lttng_kernel_old_event)
 132
 133 /* Event and Channel FD ioctl */
 134 #define LTTNG_KERNEL_OLD_CONTEXT                \
 135         _IOW(0xF6, 0x70, struct lttng_kernel_old_context)
 136
 137 /* Event, Channel and Session ioctl */
 138 #define LTTNG_KERNEL_OLD_ENABLE                 _IO(0xF6, 0x80)
 139 #define LTTNG_KERNEL_OLD_DISABLE                _IO(0xF6, 0x81)
 140
 141 #endif /* _LTTNG_ABI_OLD_H */