2 * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
3 * Copyright (C) 2011 EfficiOS Inc.
5 * SPDX-License-Identifier: GPL-2.0-only
9 #ifndef _LTTNG_KERNEL_H
10 #define _LTTNG_KERNEL_H
13 #include <common/macros.h>
14 #include <lttng/constant.h>
15 #include <lttng/event.h>
17 #define LTTNG_KERNEL_SYM_NAME_LEN 256
18 #define LTTNG_KERNEL_MAX_UPROBE_NUM 32
19 #define LTTNG_KERNEL_SESSION_NAME_LEN 256
20 #define LTTNG_KERNEL_SESSION_CREATION_TIME_ISO8601_LEN 26
23 * LTTng DebugFS ABI structures.
25 * This is the kernel ABI copied from lttng-modules tree.
28 enum lttng_kernel_instrumentation
{
29 LTTNG_KERNEL_ALL
= -1, /* Used within lttng-tools */
30 LTTNG_KERNEL_TRACEPOINT
= 0,
31 LTTNG_KERNEL_KPROBE
= 1,
32 LTTNG_KERNEL_FUNCTION
= 2,
33 LTTNG_KERNEL_KRETPROBE
= 3,
34 LTTNG_KERNEL_NOOP
= 4, /* not hooked */
35 LTTNG_KERNEL_SYSCALL
= 5,
36 LTTNG_KERNEL_UPROBE
= 6,
39 enum lttng_kernel_context_type
{
40 LTTNG_KERNEL_CONTEXT_PID
= 0,
41 LTTNG_KERNEL_CONTEXT_PERF_CPU_COUNTER
= 1,
42 LTTNG_KERNEL_CONTEXT_PROCNAME
= 2,
43 LTTNG_KERNEL_CONTEXT_PRIO
= 3,
44 LTTNG_KERNEL_CONTEXT_NICE
= 4,
45 LTTNG_KERNEL_CONTEXT_VPID
= 5,
46 LTTNG_KERNEL_CONTEXT_TID
= 6,
47 LTTNG_KERNEL_CONTEXT_VTID
= 7,
48 LTTNG_KERNEL_CONTEXT_PPID
= 8,
49 LTTNG_KERNEL_CONTEXT_VPPID
= 9,
50 LTTNG_KERNEL_CONTEXT_HOSTNAME
= 10,
51 LTTNG_KERNEL_CONTEXT_CPU_ID
= 11,
52 LTTNG_KERNEL_CONTEXT_INTERRUPTIBLE
= 12,
53 LTTNG_KERNEL_CONTEXT_PREEMPTIBLE
= 13,
54 LTTNG_KERNEL_CONTEXT_NEED_RESCHEDULE
= 14,
55 LTTNG_KERNEL_CONTEXT_MIGRATABLE
= 15,
56 LTTNG_KERNEL_CONTEXT_CALLSTACK_KERNEL
= 16,
57 LTTNG_KERNEL_CONTEXT_CALLSTACK_USER
= 17,
58 LTTNG_KERNEL_CONTEXT_CGROUP_NS
= 18,
59 LTTNG_KERNEL_CONTEXT_IPC_NS
= 19,
60 LTTNG_KERNEL_CONTEXT_MNT_NS
= 20,
61 LTTNG_KERNEL_CONTEXT_NET_NS
= 21,
62 LTTNG_KERNEL_CONTEXT_PID_NS
= 22,
63 LTTNG_KERNEL_CONTEXT_USER_NS
= 23,
64 LTTNG_KERNEL_CONTEXT_UTS_NS
= 24,
65 LTTNG_KERNEL_CONTEXT_UID
= 25,
66 LTTNG_KERNEL_CONTEXT_EUID
= 26,
67 LTTNG_KERNEL_CONTEXT_SUID
= 27,
68 LTTNG_KERNEL_CONTEXT_GID
= 28,
69 LTTNG_KERNEL_CONTEXT_EGID
= 29,
70 LTTNG_KERNEL_CONTEXT_SGID
= 30,
71 LTTNG_KERNEL_CONTEXT_VUID
= 31,
72 LTTNG_KERNEL_CONTEXT_VEUID
= 32,
73 LTTNG_KERNEL_CONTEXT_VSUID
= 33,
74 LTTNG_KERNEL_CONTEXT_VGID
= 34,
75 LTTNG_KERNEL_CONTEXT_VEGID
= 35,
76 LTTNG_KERNEL_CONTEXT_VSGID
= 36,
79 /* Perf counter attributes */
80 struct lttng_kernel_perf_counter_ctx
{
83 char name
[LTTNG_KERNEL_SYM_NAME_LEN
];
86 /* Event/Channel context */
87 #define LTTNG_KERNEL_CONTEXT_PADDING1 16
88 #define LTTNG_KERNEL_CONTEXT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
89 struct lttng_kernel_context
{
90 enum lttng_kernel_context_type ctx
;
91 char padding
[LTTNG_KERNEL_CONTEXT_PADDING1
];
94 struct lttng_kernel_perf_counter_ctx perf_counter
;
95 char padding
[LTTNG_KERNEL_CONTEXT_PADDING2
];
99 struct lttng_kernel_kretprobe
{
103 char symbol_name
[LTTNG_KERNEL_SYM_NAME_LEN
];
107 * Either addr is used, or symbol_name and offset.
109 struct lttng_kernel_kprobe
{
113 char symbol_name
[LTTNG_KERNEL_SYM_NAME_LEN
];
116 struct lttng_kernel_uprobe
{
120 struct lttng_kernel_event_callsite_uprobe
{
124 struct lttng_kernel_event_callsite
{
126 struct lttng_kernel_event_callsite_uprobe uprobe
;
130 /* Function tracer */
131 struct lttng_kernel_function
{
132 char symbol_name
[LTTNG_KERNEL_SYM_NAME_LEN
];
135 #define LTTNG_KERNEL_EVENT_PADDING1 16
136 #define LTTNG_KERNEL_EVENT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
137 struct lttng_kernel_event
{
138 char name
[LTTNG_KERNEL_SYM_NAME_LEN
];
139 enum lttng_kernel_instrumentation instrumentation
;
140 char padding
[LTTNG_KERNEL_EVENT_PADDING1
];
142 /* Per instrumentation type configuration */
144 struct lttng_kernel_kretprobe kretprobe
;
145 struct lttng_kernel_kprobe kprobe
;
146 struct lttng_kernel_uprobe uprobe
;
147 struct lttng_kernel_function ftrace
;
148 char padding
[LTTNG_KERNEL_EVENT_PADDING2
];
152 struct lttng_kernel_tracer_version
{
158 struct lttng_kernel_tracer_abi_version
{
163 struct lttng_kernel_syscall_mask
{
164 uint32_t len
; /* in bits */
171 #define LTTNG_KERNEL_CHANNEL_PADDING1 LTTNG_SYMBOL_NAME_LEN + 32
172 struct lttng_kernel_channel
{
173 uint64_t subbuf_size
; /* bytes */
174 uint64_t num_subbuf
; /* power of 2 */
175 unsigned int switch_timer_interval
; /* usec */
176 unsigned int read_timer_interval
; /* usec */
177 enum lttng_event_output output
; /* splice, mmap */
179 int overwrite
; /* 1: overwrite, 0: discard */
180 char padding
[LTTNG_KERNEL_CHANNEL_PADDING1
];
183 #define KERNEL_FILTER_BYTECODE_MAX_LEN 65536
184 struct lttng_kernel_filter_bytecode
{
186 uint32_t reloc_offset
;
192 * kernel session name
194 struct lttng_kernel_session_name
{
195 char name
[LTTNG_KERNEL_SESSION_NAME_LEN
];
199 * kernel session creation datetime
201 struct lttng_kernel_session_creation_time
{
202 char iso8601
[LTTNG_KERNEL_SESSION_CREATION_TIME_ISO8601_LEN
];
205 enum lttng_kernel_tracker_type
{
206 LTTNG_KERNEL_TRACKER_UNKNOWN
= -1,
208 LTTNG_KERNEL_TRACKER_PID
= 0,
209 LTTNG_KERNEL_TRACKER_VPID
= 1,
210 LTTNG_KERNEL_TRACKER_UID
= 2,
211 LTTNG_KERNEL_TRACKER_VUID
= 3,
212 LTTNG_KERNEL_TRACKER_GID
= 4,
213 LTTNG_KERNEL_TRACKER_VGID
= 5,
216 struct lttng_kernel_tracker_args
{
217 enum lttng_kernel_tracker_type type
;
221 #endif /* _LTTNG_KERNEL_H */