2 * Copyright (C) 2011 Julien Desfossez <julien.desfossez@polymtl.ca>
3 * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
4 * Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca>
6 * SPDX-License-Identifier: GPL-2.0-only
10 #ifndef _LTTNG_KERNEL_OLD_H
11 #define _LTTNG_KERNEL_OLD_H
14 #include <common/lttng-kernel.h>
17 * LTTng DebugFS ABI structures.
19 * This is the kernel ABI copied from lttng-modules tree.
22 /* Perf counter attributes */
23 struct lttng_kernel_old_perf_counter_ctx
{
26 char name
[LTTNG_KERNEL_SYM_NAME_LEN
];
29 /* Event/Channel context */
30 #define LTTNG_KERNEL_OLD_CONTEXT_PADDING1 16
31 #define LTTNG_KERNEL_OLD_CONTEXT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
32 struct lttng_kernel_old_context
{
33 enum lttng_kernel_context_type ctx
;
34 char padding
[LTTNG_KERNEL_OLD_CONTEXT_PADDING1
];
37 struct lttng_kernel_old_perf_counter_ctx perf_counter
;
38 char padding
[LTTNG_KERNEL_OLD_CONTEXT_PADDING2
];
42 struct lttng_kernel_old_kretprobe
{
46 char symbol_name
[LTTNG_KERNEL_SYM_NAME_LEN
];
50 * Either addr is used, or symbol_name and offset.
52 struct lttng_kernel_old_kprobe
{
56 char symbol_name
[LTTNG_KERNEL_SYM_NAME_LEN
];
60 struct lttng_kernel_old_function
{
61 char symbol_name
[LTTNG_KERNEL_SYM_NAME_LEN
];
64 #define LTTNG_KERNEL_OLD_EVENT_PADDING1 16
65 #define LTTNG_KERNEL_OLD_EVENT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
66 struct lttng_kernel_old_event
{
67 char name
[LTTNG_KERNEL_SYM_NAME_LEN
];
68 enum lttng_kernel_instrumentation instrumentation
;
69 char padding
[LTTNG_KERNEL_OLD_EVENT_PADDING1
];
71 /* Per instrumentation type configuration */
73 struct lttng_kernel_old_kretprobe kretprobe
;
74 struct lttng_kernel_old_kprobe kprobe
;
75 struct lttng_kernel_old_function ftrace
;
76 char padding
[LTTNG_KERNEL_OLD_EVENT_PADDING2
];
80 struct lttng_kernel_old_tracer_version
{
89 #define LTTNG_KERNEL_OLD_CHANNEL_PADDING1 LTTNG_SYMBOL_NAME_LEN + 32
90 struct lttng_kernel_old_channel
{
91 int overwrite
; /* 1: overwrite, 0: discard */
92 uint64_t subbuf_size
; /* bytes */
93 uint64_t num_subbuf
; /* power of 2 */
94 unsigned int switch_timer_interval
; /* usec */
95 unsigned int read_timer_interval
; /* usec */
96 enum lttng_event_output output
; /* splice, mmap */
98 char padding
[LTTNG_KERNEL_OLD_CHANNEL_PADDING1
];
101 #endif /* _LTTNG_KERNEL_OLD_H */