Commit | Line | Data |
---|---|---|
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> | |
18 | ||
19 | #ifdef CONFIG_MODULES | |
20 | ||
21 | struct module; | |
22 | ||
23 | #define show_module_flags(flags) __print_flags(flags, "", \ | |
24 | { (1UL << TAINT_PROPRIETARY_MODULE), "P" }, \ | |
25 | { (1UL << TAINT_FORCED_MODULE), "F" }, \ | |
26 | { (1UL << TAINT_CRAP), "C" }) | |
27 | ||
28 | TRACE_EVENT(module_load, | |
29 | ||
30 | TP_PROTO(struct module *mod), | |
31 | ||
32 | TP_ARGS(mod), | |
33 | ||
34 | TP_STRUCT__entry( | |
35 | __field( unsigned int, taints ) | |
36 | __string( name, mod->name ) | |
37 | ), | |
38 | ||
39 | TP_fast_assign( | |
40 | __entry->taints = mod->taints; | |
41 | __assign_str(name, mod->name); | |
42 | ), | |
43 | ||
44 | TP_printk("%s %s", __get_str(name), show_module_flags(__entry->taints)) | |
45 | ); | |
46 | ||
47 | TRACE_EVENT(module_free, | |
48 | ||
49 | TP_PROTO(struct module *mod), | |
50 | ||
51 | TP_ARGS(mod), | |
52 | ||
53 | TP_STRUCT__entry( | |
54 | __string( name, mod->name ) | |
55 | ), | |
56 | ||
57 | TP_fast_assign( | |
58 | __assign_str(name, mod->name); | |
59 | ), | |
60 | ||
61 | TP_printk("%s", __get_str(name)) | |
62 | ); | |
63 | ||
64 | #ifdef CONFIG_MODULE_UNLOAD | |
65 | /* trace_module_get/put are only used if CONFIG_MODULE_UNLOAD is defined */ | |
66 | ||
67 | DECLARE_EVENT_CLASS(module_refcnt, | |
68 | ||
69 | TP_PROTO(struct module *mod, unsigned long ip), | |
70 | ||
71 | TP_ARGS(mod, ip), | |
72 | ||
73 | TP_STRUCT__entry( | |
74 | __field( unsigned long, ip ) | |
75 | __field( int, refcnt ) | |
76 | __string( name, mod->name ) | |
77 | ), | |
78 | ||
79 | TP_fast_assign( | |
80 | __entry->ip = ip; | |
81 | __entry->refcnt = __this_cpu_read(mod->refptr->incs) + __this_cpu_read(mod->refptr->decs); | |
82 | __assign_str(name, mod->name); | |
83 | ), | |
84 | ||
85 | TP_printk("%s call_site=%pf refcnt=%d", | |
86 | __get_str(name), (void *)__entry->ip, __entry->refcnt) | |
87 | ); | |
88 | ||
89 | DEFINE_EVENT(module_refcnt, module_get, | |
90 | ||
91 | TP_PROTO(struct module *mod, unsigned long ip), | |
92 | ||
93 | TP_ARGS(mod, ip) | |
94 | ); | |
95 | ||
96 | DEFINE_EVENT(module_refcnt, module_put, | |
97 | ||
98 | TP_PROTO(struct module *mod, unsigned long ip), | |
99 | ||
100 | TP_ARGS(mod, ip) | |
101 | ); | |
102 | #endif /* CONFIG_MODULE_UNLOAD */ | |
103 | ||
104 | TRACE_EVENT(module_request, | |
105 | ||
106 | TP_PROTO(char *name, bool wait, unsigned long ip), | |
107 | ||
108 | TP_ARGS(name, wait, ip), | |
109 | ||
110 | TP_STRUCT__entry( | |
111 | __field( unsigned long, ip ) | |
112 | __field( bool, wait ) | |
113 | __string( name, name ) | |
114 | ), | |
115 | ||
116 | TP_fast_assign( | |
117 | __entry->ip = ip; | |
118 | __entry->wait = wait; | |
119 | __assign_str(name, name); | |
120 | ), | |
121 | ||
122 | TP_printk("%s wait=%d call_site=%pf", | |
123 | __get_str(name), (int)__entry->wait, (void *)__entry->ip) | |
124 | ); | |
125 | ||
126 | #endif /* CONFIG_MODULES */ | |
127 | ||
128 | #endif /* _TRACE_MODULE_H */ | |
129 | ||
130 | /* This part must be outside protection */ | |
131 | #include <trace/define_trace.h> |