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
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
/*
* Because linux/module.h has tracepoints in the header, and ftrace.h
* eventually includes this file, define_trace.h includes linux/module.h
* But we do not want the module.h to override the TRACE_SYSTEM macro
* variable that define_trace.h is processing, so we only set it
* when module events are being processed, which would happen when
* CREATE_TRACE_POINTS is defined.
*/
#ifdef CREATE_TRACE_POINTS
#undef TRACE_SYSTEM
#define TRACE_SYSTEM module
#endif
#if !defined(_TRACE_MODULE_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_MODULE_H
#include <linux/tracepoint.h>
#ifdef CONFIG_MODULES
struct module;
#define show_module_flags(flags) __print_flags(flags, "", \
{ (1UL << TAINT_PROPRIETARY_MODULE), "P" }, \
{ (1UL << TAINT_FORCED_MODULE), "F" }, \
{ (1UL << TAINT_CRAP), "C" })
TRACE_EVENT(module_load,
TP_PROTO(struct module *mod),
TP_ARGS(mod),
TP_STRUCT__entry(
__field( unsigned int, taints )
__string( name, mod->name )
),
TP_fast_assign(
__entry->taints = mod->taints;
__assign_str(name, mod->name);
),
TP_printk("%s %s", __get_str(name), show_module_flags(__entry->taints))
);
TRACE_EVENT(module_free,
TP_PROTO(struct module *mod),
TP_ARGS(mod),
TP_STRUCT__entry(
__string( name, mod->name )
),
TP_fast_assign(
__assign_str(name, mod->name);
),
TP_printk("%s", __get_str(name))
);
#ifdef CONFIG_MODULE_UNLOAD
/* trace_module_get/put are only used if CONFIG_MODULE_UNLOAD is defined */
DECLARE_EVENT_CLASS(module_refcnt,
TP_PROTO(struct module *mod, unsigned long ip),
TP_ARGS(mod, ip),
TP_STRUCT__entry(
__field( unsigned long, ip )
__field( int, refcnt )
__string( name, mod->name )
),
TP_fast_assign(
__entry->ip = ip;
__entry->refcnt = __this_cpu_read(mod->refptr->incs) + __this_cpu_read(mod->refptr->decs);
__assign_str(name, mod->name);
),
TP_printk("%s call_site=%pf refcnt=%d",
__get_str(name), (void *)__entry->ip, __entry->refcnt)
);
DEFINE_EVENT(module_refcnt, module_get,
TP_PROTO(struct module *mod, unsigned long ip),
TP_ARGS(mod, ip)
);
DEFINE_EVENT(module_refcnt, module_put,
TP_PROTO(struct module *mod, unsigned long ip),
TP_ARGS(mod, ip)
);
#endif /* CONFIG_MODULE_UNLOAD */
TRACE_EVENT(module_request,
TP_PROTO(char *name, bool wait, unsigned long ip),
TP_ARGS(name, wait, ip),
TP_STRUCT__entry(
__field( unsigned long, ip )
__field( bool, wait )
__string( name, name )
),
TP_fast_assign(
__entry->ip = ip;
__entry->wait = wait;
__assign_str(name, name);
),
TP_printk("%s wait=%d call_site=%pf",
__get_str(name), (int)__entry->wait, (void *)__entry->ip)
);
#endif /* CONFIG_MODULES */
#endif /* _TRACE_MODULE_H */
/* This part must be outside protection */
#include <trace/define_trace.h>
|
