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Commit | Line | Data |
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c94fbe1d SR |
1 | /* |
2 | * Because linux/module.h has tracepoints in the header, and ftrace.h | |
de477254 | 3 | * used to include this file, define_trace.h includes linux/module.h |
c94fbe1d SR |
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 | |
7ead8b83 LZ |
10 | #undef TRACE_SYSTEM |
11 | #define TRACE_SYSTEM module | |
c94fbe1d | 12 | #endif |
7ead8b83 LZ |
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" }, \ | |
66cc69e3 | 25 | { (1UL << TAINT_OOT_MODULE), "O" }, \ |
7ead8b83 | 26 | { (1UL << TAINT_FORCED_MODULE), "F" }, \ |
66cc69e3 | 27 | { (1UL << TAINT_CRAP), "C" }, \ |
132e9a68 | 28 | { (1UL << TAINT_UNSIGNED_MODULE), "E" }) |
7ead8b83 LZ |
29 | |
30 | TRACE_EVENT(module_load, | |
31 | ||
32 | TP_PROTO(struct module *mod), | |
33 | ||
34 | TP_ARGS(mod), | |
35 | ||
36 | TP_STRUCT__entry( | |
37 | __field( unsigned int, taints ) | |
38 | __string( name, mod->name ) | |
39 | ), | |
40 | ||
41 | TP_fast_assign( | |
42 | __entry->taints = mod->taints; | |
43 | __assign_str(name, mod->name); | |
44 | ), | |
45 | ||
46 | TP_printk("%s %s", __get_str(name), show_module_flags(__entry->taints)) | |
47 | ); | |
48 | ||
49 | TRACE_EVENT(module_free, | |
50 | ||
51 | TP_PROTO(struct module *mod), | |
52 | ||
53 | TP_ARGS(mod), | |
54 | ||
55 | TP_STRUCT__entry( | |
56 | __string( name, mod->name ) | |
57 | ), | |
58 | ||
59 | TP_fast_assign( | |
60 | __assign_str(name, mod->name); | |
61 | ), | |
62 | ||
63 | TP_printk("%s", __get_str(name)) | |
64 | ); | |
65 | ||
eb0c5377 SR |
66 | #ifdef CONFIG_MODULE_UNLOAD |
67 | /* trace_module_get/put are only used if CONFIG_MODULE_UNLOAD is defined */ | |
68 | ||
925684d6 | 69 | DECLARE_EVENT_CLASS(module_refcnt, |
7ead8b83 | 70 | |
ae832d1e | 71 | TP_PROTO(struct module *mod, unsigned long ip), |
7ead8b83 | 72 | |
ae832d1e | 73 | TP_ARGS(mod, ip), |
7ead8b83 LZ |
74 | |
75 | TP_STRUCT__entry( | |
76 | __field( unsigned long, ip ) | |
77 | __field( int, refcnt ) | |
78 | __string( name, mod->name ) | |
79 | ), | |
80 | ||
81 | TP_fast_assign( | |
82 | __entry->ip = ip; | |
098507ae | 83 | __entry->refcnt = __this_cpu_read(mod->refptr->incs) - __this_cpu_read(mod->refptr->decs); |
7ead8b83 LZ |
84 | __assign_str(name, mod->name); |
85 | ), | |
86 | ||
87 | TP_printk("%s call_site=%pf refcnt=%d", | |
88 | __get_str(name), (void *)__entry->ip, __entry->refcnt) | |
89 | ); | |
90 | ||
925684d6 | 91 | DEFINE_EVENT(module_refcnt, module_get, |
7ead8b83 | 92 | |
ae832d1e | 93 | TP_PROTO(struct module *mod, unsigned long ip), |
7ead8b83 | 94 | |
ae832d1e | 95 | TP_ARGS(mod, ip) |
925684d6 | 96 | ); |
7ead8b83 | 97 | |
925684d6 | 98 | DEFINE_EVENT(module_refcnt, module_put, |
7ead8b83 | 99 | |
ae832d1e | 100 | TP_PROTO(struct module *mod, unsigned long ip), |
7ead8b83 | 101 | |
ae832d1e | 102 | TP_ARGS(mod, ip) |
7ead8b83 | 103 | ); |
eb0c5377 | 104 | #endif /* CONFIG_MODULE_UNLOAD */ |
7ead8b83 LZ |
105 | |
106 | TRACE_EVENT(module_request, | |
107 | ||
108 | TP_PROTO(char *name, bool wait, unsigned long ip), | |
109 | ||
110 | TP_ARGS(name, wait, ip), | |
111 | ||
112 | TP_STRUCT__entry( | |
7ead8b83 | 113 | __field( unsigned long, ip ) |
b5e3008e | 114 | __field( bool, wait ) |
7ead8b83 LZ |
115 | __string( name, name ) |
116 | ), | |
117 | ||
118 | TP_fast_assign( | |
7ead8b83 | 119 | __entry->ip = ip; |
b5e3008e | 120 | __entry->wait = wait; |
7ead8b83 LZ |
121 | __assign_str(name, name); |
122 | ), | |
123 | ||
124 | TP_printk("%s wait=%d call_site=%pf", | |
125 | __get_str(name), (int)__entry->wait, (void *)__entry->ip) | |
126 | ); | |
127 | ||
128 | #endif /* CONFIG_MODULES */ | |
129 | ||
130 | #endif /* _TRACE_MODULE_H */ | |
131 | ||
132 | /* This part must be outside protection */ | |
133 | #include <trace/define_trace.h> |