Implement enable all vs enable tracepoints vs enable syscalls
[lttng-tools.git] / include / lttng-kernel.h
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
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; only version 2
9 * of the License.
10 *
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.
15 *
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.
19 */
20
21 #ifndef _LTTNG_KERNEL_H
22 #define _LTTNG_KERNEL_H
23
24 #include <stdint.h>
25
26 #include <lttng-share.h>
27
28 #define LTTNG_SYM_NAME_LEN 128
29
30 /*
31 * LTTng DebugFS ABI structures.
32 *
33 * This is the kernel ABI copied from lttng-modules tree.
34 */
35
36 enum lttng_kernel_instrumentation {
37 LTTNG_KERNEL_ALL = -1, /* Used within lttng-tools */
38 LTTNG_KERNEL_TRACEPOINT = 0,
39 LTTNG_KERNEL_KPROBE = 1,
40 LTTNG_KERNEL_FUNCTION = 2,
41 LTTNG_KERNEL_KRETPROBE = 3,
42 LTTNG_KERNEL_NOOP = 4, /* not hooked */
43 LTTNG_KERNEL_SYSCALL = 5,
44 };
45
46 enum lttng_kernel_context_type {
47 LTTNG_KERNEL_CONTEXT_PID = 0,
48 LTTNG_KERNEL_CONTEXT_PERF_COUNTER = 1,
49 LTTNG_KERNEL_CONTEXT_COMM = 2,
50 LTTNG_KERNEL_CONTEXT_PRIO = 3,
51 LTTNG_KERNEL_CONTEXT_NICE = 4,
52 LTTNG_KERNEL_CONTEXT_VPID = 5,
53 LTTNG_KERNEL_CONTEXT_TID = 6,
54 LTTNG_KERNEL_CONTEXT_VTID = 7,
55 LTTNG_KERNEL_CONTEXT_PPID = 8,
56 LTTNG_KERNEL_CONTEXT_VPPID = 9,
57 };
58
59 /* Perf counter attributes */
60 struct lttng_kernel_perf_counter_ctx {
61 uint32_t type;
62 uint64_t config;
63 char name[LTTNG_SYM_NAME_LEN];
64 };
65
66 /* Event/Channel context */
67 struct lttng_kernel_context {
68 enum lttng_kernel_context_type ctx;
69 union {
70 struct lttng_kernel_perf_counter_ctx perf_counter;
71 } u;
72 };
73
74 struct lttng_kernel_kretprobe {
75 uint64_t addr;
76
77 uint64_t offset;
78 char symbol_name[LTTNG_SYM_NAME_LEN];
79 };
80
81 /*
82 * Either addr is used, or symbol_name and offset.
83 */
84 struct lttng_kernel_kprobe {
85 uint64_t addr;
86
87 uint64_t offset;
88 char symbol_name[LTTNG_SYM_NAME_LEN];
89 };
90
91 /* Function tracer */
92 struct lttng_kernel_function {
93 char symbol_name[LTTNG_SYM_NAME_LEN];
94 };
95
96 struct lttng_kernel_event {
97 char name[LTTNG_SYM_NAME_LEN];
98 enum lttng_kernel_instrumentation instrumentation;
99 /* Per instrumentation type configuration */
100 union {
101 struct lttng_kernel_kretprobe kretprobe;
102 struct lttng_kernel_kprobe kprobe;
103 struct lttng_kernel_function ftrace;
104 } u;
105 };
106
107 struct lttng_kernel_tracer_version {
108 uint32_t version;
109 uint32_t patchlevel;
110 uint32_t sublevel;
111 };
112
113 enum lttng_kernel_calibrate_type {
114 LTTNG_KERNEL_CALIBRATE_KRETPROBE,
115 };
116
117 struct lttng_kernel_calibrate {
118 enum lttng_kernel_calibrate_type type; /* type (input) */
119 };
120
121 #endif /* _LTTNG_KERNEL_H */
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