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
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; only version 2
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
21 #ifndef _LTTNG_KERNEL_H
22 #define _LTTNG_KERNEL_H
26 #define LTTNG_KERNEL_SYM_NAME_LEN 256
29 * LTTng DebugFS ABI structures.
31 * This is the kernel ABI copied from lttng-modules tree.
34 enum lttng_kernel_instrumentation
{
35 LTTNG_KERNEL_ALL
= -1, /* Used within lttng-tools */
36 LTTNG_KERNEL_TRACEPOINT
= 0,
37 LTTNG_KERNEL_KPROBE
= 1,
38 LTTNG_KERNEL_FUNCTION
= 2,
39 LTTNG_KERNEL_KRETPROBE
= 3,
40 LTTNG_KERNEL_NOOP
= 4, /* not hooked */
41 LTTNG_KERNEL_SYSCALL
= 5,
44 enum lttng_kernel_context_type
{
45 LTTNG_KERNEL_CONTEXT_PID
= 0,
46 LTTNG_KERNEL_CONTEXT_PERF_COUNTER
= 1,
47 LTTNG_KERNEL_CONTEXT_PROCNAME
= 2,
48 LTTNG_KERNEL_CONTEXT_PRIO
= 3,
49 LTTNG_KERNEL_CONTEXT_NICE
= 4,
50 LTTNG_KERNEL_CONTEXT_VPID
= 5,
51 LTTNG_KERNEL_CONTEXT_TID
= 6,
52 LTTNG_KERNEL_CONTEXT_VTID
= 7,
53 LTTNG_KERNEL_CONTEXT_PPID
= 8,
54 LTTNG_KERNEL_CONTEXT_VPPID
= 9,
57 /* Perf counter attributes */
58 struct lttng_kernel_perf_counter_ctx
{
61 char name
[LTTNG_KERNEL_SYM_NAME_LEN
];
64 /* Event/Channel context */
65 #define LTTNG_KERNEL_CONTEXT_PADDING1 16
66 #define LTTNG_KERNEL_CONTEXT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
67 struct lttng_kernel_context
{
68 enum lttng_kernel_context_type ctx
;
69 char padding
[LTTNG_KERNEL_CONTEXT_PADDING1
];
72 struct lttng_kernel_perf_counter_ctx perf_counter
;
73 char padding
[LTTNG_KERNEL_CONTEXT_PADDING2
];
77 struct lttng_kernel_kretprobe
{
81 char symbol_name
[LTTNG_KERNEL_SYM_NAME_LEN
];
85 * Either addr is used, or symbol_name and offset.
87 struct lttng_kernel_kprobe
{
91 char symbol_name
[LTTNG_KERNEL_SYM_NAME_LEN
];
95 struct lttng_kernel_function
{
96 char symbol_name
[LTTNG_KERNEL_SYM_NAME_LEN
];
99 #define LTTNG_KERNEL_EVENT_PADDING1 16
100 #define LTTNG_KERNEL_EVENT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
101 struct lttng_kernel_event
{
102 char name
[LTTNG_KERNEL_SYM_NAME_LEN
];
103 enum lttng_kernel_instrumentation instrumentation
;
104 char padding
[LTTNG_KERNEL_EVENT_PADDING1
];
106 /* Per instrumentation type configuration */
108 struct lttng_kernel_kretprobe kretprobe
;
109 struct lttng_kernel_kprobe kprobe
;
110 struct lttng_kernel_function ftrace
;
111 char padding
[LTTNG_KERNEL_EVENT_PADDING2
];
115 struct lttng_kernel_tracer_version
{
121 enum lttng_kernel_calibrate_type
{
122 LTTNG_KERNEL_CALIBRATE_KRETPROBE
,
125 struct lttng_kernel_calibrate
{
126 enum lttng_kernel_calibrate_type type
; /* type (input) */
129 #endif /* _LTTNG_KERNEL_H */