lttng-abi-old.h

   1 /* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
   2  *
   3  * lttng-abi-old.h
   4  *
   5  * LTTng old ABI header (without support for compat 32/64 bits)
   6  *
   7  * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   8  */
   9
  10 #ifndef _LTTNG_ABI_OLD_H
  11 #define _LTTNG_ABI_OLD_H
  12
  13 #include <linux/fs.h>
  14 #include <lttng-abi.h>
  15
  16 /*
  17  * LTTng DebugFS ABI structures.
  18  */
  19 #define LTTNG_KERNEL_OLD_CHANNEL_PADDING        LTTNG_KERNEL_SYM_NAME_LEN + 32
  20 struct lttng_kernel_old_channel {
  21         int overwrite;                          /* 1: overwrite, 0: discard */
  22         uint64_t subbuf_size;                   /* in bytes */
  23         uint64_t num_subbuf;
  24         unsigned int switch_timer_interval;     /* usecs */
  25         unsigned int read_timer_interval;       /* usecs */
  26         enum lttng_kernel_output output;        /* splice, mmap */
  27         char padding[LTTNG_KERNEL_OLD_CHANNEL_PADDING];
  28 };
  29
  30 struct lttng_kernel_old_kretprobe {
  31         uint64_t addr;
  32
  33         uint64_t offset;
  34         char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
  35 };
  36
  37 /*
  38  * Either addr is used, or symbol_name and offset.
  39  */
  40 struct lttng_kernel_old_kprobe {
  41         uint64_t addr;
  42
  43         uint64_t offset;
  44         char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
  45 };
  46
  47 struct lttng_kernel_old_function_tracer {
  48         char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
  49 };
  50
  51 /*
  52  * For syscall tracing, name = '\0' means "enable all".
  53  */
  54 #define LTTNG_KERNEL_OLD_EVENT_PADDING1 16
  55 #define LTTNG_KERNEL_OLD_EVENT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
  56 struct lttng_kernel_old_event {
  57         char name[LTTNG_KERNEL_SYM_NAME_LEN];   /* event name */
  58         enum lttng_kernel_instrumentation instrumentation;
  59         char padding[LTTNG_KERNEL_OLD_EVENT_PADDING1];
  60
  61         /* Per instrumentation type configuration */
  62         union {
  63                 struct lttng_kernel_old_kretprobe kretprobe;
  64                 struct lttng_kernel_old_kprobe kprobe;
  65                 struct lttng_kernel_old_function_tracer ftrace;
  66                 char padding[LTTNG_KERNEL_OLD_EVENT_PADDING2];
  67         } u;
  68 };
  69
  70 struct lttng_kernel_old_tracer_version {
  71         uint32_t major;
  72         uint32_t minor;
  73         uint32_t patchlevel;
  74 };
  75
  76 struct lttng_kernel_old_calibrate {
  77         enum lttng_kernel_calibrate_type type;  /* type (input) */
  78 };
  79
  80 struct lttng_kernel_old_perf_counter_ctx {
  81         uint32_t type;
  82         uint64_t config;
  83         char name[LTTNG_KERNEL_SYM_NAME_LEN];
  84 };
  85
  86 #define LTTNG_KERNEL_OLD_CONTEXT_PADDING1       16
  87 #define LTTNG_KERNEL_OLD_CONTEXT_PADDING2       LTTNG_KERNEL_SYM_NAME_LEN + 32
  88 struct lttng_kernel_old_context {
  89         enum lttng_kernel_context_type ctx;
  90         char padding[LTTNG_KERNEL_OLD_CONTEXT_PADDING1];
  91
  92         union {
  93                 struct lttng_kernel_old_perf_counter_ctx perf_counter;
  94                 char padding[LTTNG_KERNEL_OLD_CONTEXT_PADDING2];
  95         } u;
  96 };
  97
  98 /* LTTng file descriptor ioctl */
  99 #define LTTNG_KERNEL_OLD_SESSION                _IO(0xF6, 0x40)
 100 #define LTTNG_KERNEL_OLD_TRACER_VERSION         \
 101         _IOR(0xF6, 0x41, struct lttng_kernel_old_tracer_version)
 102 #define LTTNG_KERNEL_OLD_TRACEPOINT_LIST        _IO(0xF6, 0x42)
 103 #define LTTNG_KERNEL_OLD_WAIT_QUIESCENT         _IO(0xF6, 0x43)
 104 #define LTTNG_KERNEL_OLD_CALIBRATE              \
 105         _IOWR(0xF6, 0x44, struct lttng_kernel_old_calibrate)
 106
 107 /* Session FD ioctl */
 108 #define LTTNG_KERNEL_OLD_METADATA               \
 109         _IOW(0xF6, 0x50, struct lttng_kernel_old_channel)
 110 #define LTTNG_KERNEL_OLD_CHANNEL                \
 111         _IOW(0xF6, 0x51, struct lttng_kernel_old_channel)
 112 #define LTTNG_KERNEL_OLD_SESSION_START          _IO(0xF6, 0x52)
 113 #define LTTNG_KERNEL_OLD_SESSION_STOP           _IO(0xF6, 0x53)
 114
 115 /* Channel FD ioctl */
 116 #define LTTNG_KERNEL_OLD_STREAM                 _IO(0xF6, 0x60)
 117 #define LTTNG_KERNEL_OLD_EVENT                  \
 118         _IOW(0xF6, 0x61, struct lttng_kernel_old_event)
 119
 120 /* Event and Channel FD ioctl */
 121 #define LTTNG_KERNEL_OLD_CONTEXT                \
 122         _IOW(0xF6, 0x70, struct lttng_kernel_old_context)
 123
 124 /* Event, Channel and Session ioctl */
 125 #define LTTNG_KERNEL_OLD_ENABLE                 _IO(0xF6, 0x80)
 126 #define LTTNG_KERNEL_OLD_DISABLE                _IO(0xF6, 0x81)
 127
 128 #endif /* _LTTNG_ABI_OLD_H */