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; either version 2
9 * of the License, or (at your option) any later version.
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
24 #include "lttng-share.h"
26 #define LTTNG_SYM_NAME_LEN 128
28 enum lttng_kernel_instrumentation
{
29 LTTNG_KERNEL_TRACEPOINTS
,
31 LTTNG_KERNEL_FUNCTION_TRACER
,
35 * 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 */
46 struct lttng_kernel_tracepoint
{
50 * Either addr is used, or symbol_name and offset.
52 struct lttng_kernel_kprobe
{
56 char symbol_name
[LTTNG_SYM_NAME_LEN
];
59 struct lttng_kernel_function_tracer
{
60 char symbol_name
[LTTNG_SYM_NAME_LEN
];
63 struct lttng_kernel_event
{
64 char name
[LTTNG_SYM_NAME_LEN
]; /* event name */
65 enum lttng_kernel_instrumentation instrumentation
;
66 /* Per instrumentation type configuration */
68 struct lttng_kernel_tracepoint tracepoint
;
69 struct lttng_kernel_kprobe kprobe
;
70 struct lttng_kernel_function_tracer ftrace
;
74 struct lttng_kernel_tracer_version
{
80 #endif /* _LTTNG_KERNEL_H */