2 * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca>
3 * Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
4 * David Goulet <david.goulet@polymtl.ca>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License, version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20 #ifndef _LTTNG_KERNEL_H
21 #define _LTTNG_KERNEL_H
25 #define LTTNG_KERNEL_SYM_NAME_LEN 256
28 * LTTng DebugFS ABI structures.
30 * This is the kernel ABI copied from lttng-modules tree.
33 enum lttng_kernel_instrumentation
{
34 LTTNG_KERNEL_ALL
= -1, /* Used within lttng-tools */
35 LTTNG_KERNEL_TRACEPOINT
= 0,
36 LTTNG_KERNEL_KPROBE
= 1,
37 LTTNG_KERNEL_FUNCTION
= 2,
38 LTTNG_KERNEL_KRETPROBE
= 3,
39 LTTNG_KERNEL_NOOP
= 4, /* not hooked */
40 LTTNG_KERNEL_SYSCALL
= 5,
43 enum lttng_kernel_context_type
{
44 LTTNG_KERNEL_CONTEXT_PID
= 0,
45 LTTNG_KERNEL_CONTEXT_PERF_COUNTER
= 1,
46 LTTNG_KERNEL_CONTEXT_PROCNAME
= 2,
47 LTTNG_KERNEL_CONTEXT_PRIO
= 3,
48 LTTNG_KERNEL_CONTEXT_NICE
= 4,
49 LTTNG_KERNEL_CONTEXT_VPID
= 5,
50 LTTNG_KERNEL_CONTEXT_TID
= 6,
51 LTTNG_KERNEL_CONTEXT_VTID
= 7,
52 LTTNG_KERNEL_CONTEXT_PPID
= 8,
53 LTTNG_KERNEL_CONTEXT_VPPID
= 9,
56 /* Perf counter attributes */
57 struct lttng_kernel_perf_counter_ctx
{
60 char name
[LTTNG_KERNEL_SYM_NAME_LEN
];
63 /* Event/Channel context */
64 #define LTTNG_KERNEL_CONTEXT_PADDING1 16
65 #define LTTNG_KERNEL_CONTEXT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
66 struct lttng_kernel_context
{
67 enum lttng_kernel_context_type ctx
;
68 char padding
[LTTNG_KERNEL_CONTEXT_PADDING1
];
71 struct lttng_kernel_perf_counter_ctx perf_counter
;
72 char padding
[LTTNG_KERNEL_CONTEXT_PADDING2
];
76 struct lttng_kernel_kretprobe
{
80 char symbol_name
[LTTNG_KERNEL_SYM_NAME_LEN
];
84 * Either addr is used, or symbol_name and offset.
86 struct lttng_kernel_kprobe
{
90 char symbol_name
[LTTNG_KERNEL_SYM_NAME_LEN
];
94 struct lttng_kernel_function
{
95 char symbol_name
[LTTNG_KERNEL_SYM_NAME_LEN
];
98 #define LTTNG_KERNEL_EVENT_PADDING1 16
99 #define LTTNG_KERNEL_EVENT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
100 struct lttng_kernel_event
{
101 char name
[LTTNG_KERNEL_SYM_NAME_LEN
];
102 enum lttng_kernel_instrumentation instrumentation
;
103 char padding
[LTTNG_KERNEL_EVENT_PADDING1
];
105 /* Per instrumentation type configuration */
107 struct lttng_kernel_kretprobe kretprobe
;
108 struct lttng_kernel_kprobe kprobe
;
109 struct lttng_kernel_function ftrace
;
110 char padding
[LTTNG_KERNEL_EVENT_PADDING2
];
114 struct lttng_kernel_tracer_version
{
120 enum lttng_kernel_calibrate_type
{
121 LTTNG_KERNEL_CALIBRATE_KRETPROBE
,
124 struct lttng_kernel_calibrate
{
125 enum lttng_kernel_calibrate_type type
; /* type (input) */
128 #endif /* _LTTNG_KERNEL_H */