7 * Copyright 2010 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
11 * Dual LGPL v2.1/GPL v2 license.
16 #define LTTNG_KERNEL_SYM_NAME_LEN 256
18 enum lttng_kernel_instrumentation
{
19 LTTNG_KERNEL_TRACEPOINT
= 0,
20 LTTNG_KERNEL_KPROBE
= 1,
21 LTTNG_KERNEL_FUNCTION
= 2,
22 LTTNG_KERNEL_KRETPROBE
= 3,
23 LTTNG_KERNEL_NOOP
= 4, /* not hooked */
24 LTTNG_KERNEL_SYSCALL
= 5,
30 enum lttng_kernel_output
{
31 LTTNG_KERNEL_SPLICE
= 0,
32 LTTNG_KERNEL_MMAP
= 1,
36 * LTTng DebugFS ABI structures.
38 struct lttng_kernel_channel
{
39 int overwrite
; /* 1: overwrite, 0: discard */
40 uint64_t subbuf_size
; /* in bytes */
42 unsigned int switch_timer_interval
; /* usecs */
43 unsigned int read_timer_interval
; /* usecs */
44 enum lttng_kernel_output output
; /* splice, mmap */
47 struct lttng_kernel_kretprobe
{
51 char symbol_name
[LTTNG_KERNEL_SYM_NAME_LEN
];
55 * Either addr is used, or symbol_name and offset.
57 struct lttng_kernel_kprobe
{
61 char symbol_name
[LTTNG_KERNEL_SYM_NAME_LEN
];
64 struct lttng_kernel_function_tracer
{
65 char symbol_name
[LTTNG_KERNEL_SYM_NAME_LEN
];
69 * For syscall tracing, name = '\0' means "enable all".
71 struct lttng_kernel_event
{
72 char name
[LTTNG_KERNEL_SYM_NAME_LEN
]; /* event name */
73 enum lttng_kernel_instrumentation instrumentation
;
74 /* Per instrumentation type configuration */
76 struct lttng_kernel_kretprobe kretprobe
;
77 struct lttng_kernel_kprobe kprobe
;
78 struct lttng_kernel_function_tracer ftrace
;
82 struct lttng_kernel_tracer_version
{
88 enum lttng_kernel_calibrate_type
{
89 LTTNG_KERNEL_CALIBRATE_KRETPROBE
,
92 struct lttng_kernel_calibrate
{
93 enum lttng_kernel_calibrate_type type
; /* type (input) */
96 enum lttng_kernel_context_type
{
97 LTTNG_KERNEL_CONTEXT_PID
= 0,
98 LTTNG_KERNEL_CONTEXT_PERF_COUNTER
= 1,
99 LTTNG_KERNEL_CONTEXT_PROCNAME
= 2,
100 LTTNG_KERNEL_CONTEXT_PRIO
= 3,
101 LTTNG_KERNEL_CONTEXT_NICE
= 4,
102 LTTNG_KERNEL_CONTEXT_VPID
= 5,
103 LTTNG_KERNEL_CONTEXT_TID
= 6,
104 LTTNG_KERNEL_CONTEXT_VTID
= 7,
105 LTTNG_KERNEL_CONTEXT_PPID
= 8,
106 LTTNG_KERNEL_CONTEXT_VPPID
= 9,
109 struct lttng_kernel_perf_counter_ctx
{
112 char name
[LTTNG_KERNEL_SYM_NAME_LEN
];
115 struct lttng_kernel_context
{
116 enum lttng_kernel_context_type ctx
;
118 struct lttng_kernel_perf_counter_ctx perf_counter
;
122 /* LTTng file descriptor ioctl */
123 #define LTTNG_KERNEL_SESSION _IO(0xF6, 0x40)
124 #define LTTNG_KERNEL_TRACER_VERSION \
125 _IOR(0xF6, 0x41, struct lttng_kernel_tracer_version)
126 #define LTTNG_KERNEL_TRACEPOINT_LIST _IO(0xF6, 0x42)
127 #define LTTNG_KERNEL_WAIT_QUIESCENT _IO(0xF6, 0x43)
128 #define LTTNG_KERNEL_CALIBRATE \
129 _IOWR(0xF6, 0x44, struct lttng_kernel_calibrate)
131 /* Session FD ioctl */
132 #define LTTNG_KERNEL_METADATA \
133 _IOW(0xF6, 0x50, struct lttng_kernel_channel)
134 #define LTTNG_KERNEL_CHANNEL \
135 _IOW(0xF6, 0x51, struct lttng_kernel_channel)
136 #define LTTNG_KERNEL_SESSION_START _IO(0xF6, 0x52)
137 #define LTTNG_KERNEL_SESSION_STOP _IO(0xF6, 0x53)
139 /* Channel FD ioctl */
140 #define LTTNG_KERNEL_STREAM _IO(0xF6, 0x60)
141 #define LTTNG_KERNEL_EVENT \
142 _IOW(0xF6, 0x61, struct lttng_kernel_event)
144 /* Event and Channel FD ioctl */
145 #define LTTNG_KERNEL_CONTEXT \
146 _IOW(0xF6, 0x70, struct lttng_kernel_context)
148 /* Event, Channel and Session ioctl */
149 #define LTTNG_KERNEL_ENABLE _IO(0xF6, 0x80)
150 #define LTTNG_KERNEL_DISABLE _IO(0xF6, 0x81)
152 #endif /* _LTTNG_ABI_H */