blob: b5e16e438448f26bbba255b11f610835ad9a671b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_TRACE_H
#define _LINUX_TRACE_H
#define TRACE_EXPORT_FUNCTION BIT(0)
#define TRACE_EXPORT_EVENT BIT(1)
#define TRACE_EXPORT_MARKER BIT(2)
/*
* The trace export - an export of Ftrace output. The trace_export
* can process traces and export them to a registered destination as
* an addition to the current only output of Ftrace - i.e. ring buffer.
*
* If you want traces to be sent to some other place rather than ring
* buffer only, just need to register a new trace_export and implement
* its own .write() function for writing traces to the storage.
*
* next - pointer to the next trace_export
* write - copy traces which have been delt with ->commit() to
* the destination
* flags - which ftrace to be exported
*/
struct trace_export {
struct trace_export __rcu *next;
void (*write)(struct trace_export *, const void *, unsigned int);
int flags;
};
#ifdef CONFIG_TRACING
int register_ftrace_export(struct trace_export *export);
int unregister_ftrace_export(struct trace_export *export);
struct trace_array;
void trace_printk_init_buffers(void);
__printf(3, 4)
int trace_array_printk(struct trace_array *tr, unsigned long ip,
const char *fmt, ...);
int trace_array_init_printk(struct trace_array *tr);
void trace_array_put(struct trace_array *tr);
struct trace_array *trace_array_get_by_name(const char *name);
int trace_array_destroy(struct trace_array *tr);
/* For osnoise tracer */
int osnoise_arch_register(void);
void osnoise_arch_unregister(void);
void osnoise_trace_irq_entry(int id);
void osnoise_trace_irq_exit(int id, const char *desc);
#else /* CONFIG_TRACING */
static inline int register_ftrace_export(struct trace_export *export)
{
return -EINVAL;
}
static inline int unregister_ftrace_export(struct trace_export *export)
{
return 0;
}
static inline void trace_printk_init_buffers(void)
{
}
static inline int trace_array_printk(struct trace_array *tr, unsigned long ip,
const char *fmt, ...)
{
return 0;
}
static inline int trace_array_init_printk(struct trace_array *tr)
{
return -EINVAL;
}
static inline void trace_array_put(struct trace_array *tr)
{
}
static inline struct trace_array *trace_array_get_by_name(const char *name)
{
return NULL;
}
static inline int trace_array_destroy(struct trace_array *tr)
{
return 0;
}
#endif /* CONFIG_TRACING */
#endif /* _LINUX_TRACE_H */
|
