Add string-utils convenience library
[lttng-tools.git] / src / common / lttng-kernel-old.h
CommitLineData
4dbc372b
JD
1/*
2 * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca>
3 * Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
4 * David Goulet <david.goulet@polymtl.ca>
5 *
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.
9 *
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
13 * more details.
14 *
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.
18 */
19
20#ifndef _LTTNG_KERNEL_OLD_H
21#define _LTTNG_KERNEL_OLD_H
22
23#include <stdint.h>
24#include <common/lttng-kernel.h>
25
26/*
27 * LTTng DebugFS ABI structures.
28 *
29 * This is the kernel ABI copied from lttng-modules tree.
30 */
31
32/* Perf counter attributes */
33struct lttng_kernel_old_perf_counter_ctx {
34 uint32_t type;
35 uint64_t config;
36 char name[LTTNG_KERNEL_SYM_NAME_LEN];
37};
38
39/* Event/Channel context */
40#define LTTNG_KERNEL_OLD_CONTEXT_PADDING1 16
41#define LTTNG_KERNEL_OLD_CONTEXT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
42struct lttng_kernel_old_context {
43 enum lttng_kernel_context_type ctx;
44 char padding[LTTNG_KERNEL_OLD_CONTEXT_PADDING1];
45
46 union {
47 struct lttng_kernel_old_perf_counter_ctx perf_counter;
48 char padding[LTTNG_KERNEL_OLD_CONTEXT_PADDING2];
49 } u;
50};
51
52struct lttng_kernel_old_kretprobe {
53 uint64_t addr;
54
55 uint64_t offset;
56 char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
57};
58
59/*
60 * Either addr is used, or symbol_name and offset.
61 */
62struct lttng_kernel_old_kprobe {
63 uint64_t addr;
64
65 uint64_t offset;
66 char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
67};
68
69/* Function tracer */
70struct lttng_kernel_old_function {
71 char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
72};
73
74#define LTTNG_KERNEL_OLD_EVENT_PADDING1 16
75#define LTTNG_KERNEL_OLD_EVENT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
76struct lttng_kernel_old_event {
77 char name[LTTNG_KERNEL_SYM_NAME_LEN];
78 enum lttng_kernel_instrumentation instrumentation;
79 char padding[LTTNG_KERNEL_OLD_EVENT_PADDING1];
80
81 /* Per instrumentation type configuration */
82 union {
83 struct lttng_kernel_old_kretprobe kretprobe;
84 struct lttng_kernel_old_kprobe kprobe;
85 struct lttng_kernel_old_function ftrace;
86 char padding[LTTNG_KERNEL_OLD_EVENT_PADDING2];
87 } u;
88};
89
90struct lttng_kernel_old_tracer_version {
91 uint32_t major;
92 uint32_t minor;
93 uint32_t patchlevel;
94};
95
4dbc372b
JD
96/*
97 * kernel channel
98 */
99#define LTTNG_KERNEL_OLD_CHANNEL_PADDING1 LTTNG_SYMBOL_NAME_LEN + 32
100struct lttng_kernel_old_channel {
101 int overwrite; /* 1: overwrite, 0: discard */
102 uint64_t subbuf_size; /* bytes */
103 uint64_t num_subbuf; /* power of 2 */
104 unsigned int switch_timer_interval; /* usec */
105 unsigned int read_timer_interval; /* usec */
106 enum lttng_event_output output; /* splice, mmap */
107
108 char padding[LTTNG_KERNEL_OLD_CHANNEL_PADDING1];
109};
110
111#endif /* _LTTNG_KERNEL_OLD_H */
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