1 #ifndef _LTT_DEBUGFS_ABI_H
2 #define _LTT_DEBUGFS_ABI_H
7 * Copyright 2010 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
9 * LTTng debugfs ABI header
14 #define LTTNG_SYM_NAME_LEN 128
16 enum lttng_kernel_instrumentation
{
17 LTTNG_KERNEL_TRACEPOINTS
,
19 LTTNG_KERNEL_FUNCTION_TRACER
,
23 * LTTng DebugFS ABI structures.
26 struct lttng_kernel_channel
{
27 int overwrite
; /* 1: overwrite, 0: discard */
28 uint64_t subbuf_size
; /* in bytes */
30 unsigned int switch_timer_interval
; /* usecs */
31 unsigned int read_timer_interval
; /* usecs */
34 struct lttng_kernel_tracepoint
{
38 * Either addr is used, or symbol_name and offset.
40 struct lttng_kernel_kprobe
{
44 char symbol_name
[LTTNG_SYM_NAME_LEN
];
47 struct lttng_kernel_function_tracer
{
48 char symbol_name
[LTTNG_SYM_NAME_LEN
];
51 struct lttng_kernel_event
{
52 char name
[LTTNG_SYM_NAME_LEN
]; /* event name */
53 enum lttng_kernel_instrumentation instrumentation
;
54 /* Per instrumentation type configuration */
56 struct lttng_kernel_tracepoint tracepoint
;
57 struct lttng_kernel_kprobe kprobe
;
58 struct lttng_kernel_function_tracer ftrace
;
62 struct lttng_kernel_tracer_version
{
68 #define LTTNG_KERNEL_SESSION _IO(0xF6, 0x40)
69 #define LTTNG_KERNEL_SESSION_START _IO(0xF6, 0x41)
70 #define LTTNG_KERNEL_SESSION_STOP _IO(0xF6, 0x42)
71 #define LTTNG_KERNEL_CHANNEL \
72 _IOW(0xF6, 0x43, struct lttng_kernel_channel)
73 #define LTTNG_KERNEL_STREAM _IO(0xF6, 0x44)
74 #define LTTNG_KERNEL_EVENT \
75 _IOW(0xF6, 0x45, struct lttng_kernel_event)
76 #define LTTNG_KERNEL_METADATA \
77 _IOW(0xF6, 0x46, struct lttng_kernel_channel)
78 #define LTTNG_KERNEL_KPROBE \
79 _IOW(0xF6, 0x47, struct lttng_kernel_kprobe)
80 #define LTTNG_KERNEL_TRACER_VERSION \
81 _IOR(0xF6, 0x48, struct lttng_kernel_tracer_version)
82 #define LTTNG_KERNEL_FUNCTION_TRACER \
83 _IOW(0xF6, 0x49, struct lttng_kernel_function_tracer)
85 #endif /* _LTT_DEBUGFS_ABI_H */