Commit | Line | Data |
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b283666f PW |
1 | /* |
2 | * Because linux/module.h has tracepoints in the header, and ftrace.h | |
3 | * eventually includes this file, define_trace.h includes linux/module.h | |
4 | * But we do not want the module.h to override the TRACE_SYSTEM macro | |
5 | * variable that define_trace.h is processing, so we only set it | |
6 | * when module events are being processed, which would happen when | |
7 | * CREATE_TRACE_POINTS is defined. | |
8 | */ | |
9 | #ifdef CREATE_TRACE_POINTS | |
10 | #undef TRACE_SYSTEM | |
11 | #define TRACE_SYSTEM module | |
12 | #endif | |
13 | ||
14 | #if !defined(_TRACE_MODULE_H) || defined(TRACE_HEADER_MULTI_READ) | |
15 | #define _TRACE_MODULE_H | |
16 | ||
17 | #include <linux/tracepoint.h> | |
7c68b363 | 18 | #include <linux/version.h> |
b283666f PW |
19 | |
20 | #ifdef CONFIG_MODULES | |
21 | ||
22 | #ifndef _TRACE_MODULE_DEF | |
23 | #define _TRACE_MODULE_DEF | |
24 | struct module; | |
25 | ||
26 | #define show_module_flags(flags) __print_flags(flags, "", \ | |
27 | { (1UL << TAINT_PROPRIETARY_MODULE), "P" }, \ | |
28 | { (1UL << TAINT_FORCED_MODULE), "F" }, \ | |
29 | { (1UL << TAINT_CRAP), "C" }) | |
30 | #endif | |
31 | ||
32 | TRACE_EVENT(module_load, | |
33 | ||
34 | TP_PROTO(struct module *mod), | |
35 | ||
36 | TP_ARGS(mod), | |
37 | ||
38 | TP_STRUCT__entry( | |
39 | __field( unsigned int, taints ) | |
40 | __string( name, mod->name ) | |
41 | ), | |
42 | ||
43 | TP_fast_assign( | |
d3ac4d63 PW |
44 | tp_assign(taints, mod->taints) |
45 | tp_strcpy(name, mod->name) | |
b283666f PW |
46 | ), |
47 | ||
48 | TP_printk("%s %s", __get_str(name), show_module_flags(__entry->taints)) | |
49 | ) | |
50 | ||
51 | TRACE_EVENT(module_free, | |
52 | ||
53 | TP_PROTO(struct module *mod), | |
54 | ||
55 | TP_ARGS(mod), | |
56 | ||
57 | TP_STRUCT__entry( | |
58 | __string( name, mod->name ) | |
59 | ), | |
60 | ||
61 | TP_fast_assign( | |
d3ac4d63 | 62 | tp_strcpy(name, mod->name) |
b283666f PW |
63 | ), |
64 | ||
65 | TP_printk("%s", __get_str(name)) | |
66 | ) | |
67 | ||
68 | #ifdef CONFIG_MODULE_UNLOAD | |
69 | /* trace_module_get/put are only used if CONFIG_MODULE_UNLOAD is defined */ | |
70 | ||
71 | DECLARE_EVENT_CLASS(module_refcnt, | |
72 | ||
7c68b363 | 73 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) |
b283666f PW |
74 | TP_PROTO(struct module *mod, unsigned long ip), |
75 | ||
76 | TP_ARGS(mod, ip), | |
7c68b363 AG |
77 | #else |
78 | TP_PROTO(struct module *mod, unsigned long ip, int refcnt), | |
79 | ||
80 | TP_ARGS(mod, ip, refcnt), | |
81 | #endif | |
b283666f PW |
82 | |
83 | TP_STRUCT__entry( | |
84 | __field( unsigned long, ip ) | |
85 | __field( int, refcnt ) | |
86 | __string( name, mod->name ) | |
87 | ), | |
88 | ||
89 | TP_fast_assign( | |
d3ac4d63 | 90 | tp_assign(ip, ip) |
7c68b363 | 91 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) |
d3ac4d63 | 92 | tp_assign(refcnt, __this_cpu_read(mod->refptr->incs) + __this_cpu_read(mod->refptr->decs)) |
7c68b363 AG |
93 | #else |
94 | tp_assign(refcnt, refcnt) | |
95 | #endif | |
d3ac4d63 | 96 | tp_strcpy(name, mod->name) |
b283666f PW |
97 | ), |
98 | ||
99 | TP_printk("%s call_site=%pf refcnt=%d", | |
100 | __get_str(name), (void *)__entry->ip, __entry->refcnt) | |
101 | ) | |
102 | ||
103 | DEFINE_EVENT(module_refcnt, module_get, | |
104 | ||
7c68b363 | 105 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) |
b283666f PW |
106 | TP_PROTO(struct module *mod, unsigned long ip), |
107 | ||
108 | TP_ARGS(mod, ip) | |
7c68b363 AG |
109 | #else |
110 | TP_PROTO(struct module *mod, unsigned long ip, int refcnt), | |
111 | ||
112 | TP_ARGS(mod, ip, refcnt) | |
113 | #endif | |
b283666f PW |
114 | ) |
115 | ||
116 | DEFINE_EVENT(module_refcnt, module_put, | |
117 | ||
7c68b363 | 118 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) |
b283666f PW |
119 | TP_PROTO(struct module *mod, unsigned long ip), |
120 | ||
121 | TP_ARGS(mod, ip) | |
7c68b363 AG |
122 | #else |
123 | TP_PROTO(struct module *mod, unsigned long ip, int refcnt), | |
124 | ||
125 | TP_ARGS(mod, ip, refcnt) | |
126 | #endif | |
b283666f PW |
127 | ) |
128 | #endif /* CONFIG_MODULE_UNLOAD */ | |
129 | ||
130 | TRACE_EVENT(module_request, | |
131 | ||
132 | TP_PROTO(char *name, bool wait, unsigned long ip), | |
133 | ||
134 | TP_ARGS(name, wait, ip), | |
135 | ||
136 | TP_STRUCT__entry( | |
137 | __field( unsigned long, ip ) | |
138 | __field( bool, wait ) | |
139 | __string( name, name ) | |
140 | ), | |
141 | ||
142 | TP_fast_assign( | |
d3ac4d63 PW |
143 | tp_assign(ip, ip) |
144 | tp_assign(wait, wait) | |
145 | tp_strcpy(name, name) | |
b283666f PW |
146 | ), |
147 | ||
148 | TP_printk("%s wait=%d call_site=%pf", | |
149 | __get_str(name), (int)__entry->wait, (void *)__entry->ip) | |
150 | ) | |
151 | ||
152 | #endif /* CONFIG_MODULES */ | |
153 | ||
154 | #endif /* _TRACE_MODULE_H */ | |
155 | ||
156 | /* This part must be outside protection */ | |
157 | #include "../../../probes/define_trace.h" |