1 /* 2 * Because linux/module.h has tracepoints in the header, and ftrace.h 3 * used to include 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_OOT_MODULE), "O" }, \ 26 { (1UL << TAINT_FORCED_MODULE), "F" }, \ 27 { (1UL << TAINT_CRAP), "C" }, \ 28 { (1UL << TAINT_UNSIGNED_MODULE), "X" }) 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 66 #ifdef CONFIG_MODULE_UNLOAD 67 /* trace_module_get/put are only used if CONFIG_MODULE_UNLOAD is defined */ 68 69 DECLARE_EVENT_CLASS(module_refcnt, 70 71 TP_PROTO(struct module *mod, unsigned long ip), 72 73 TP_ARGS(mod, ip), 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; 83 __entry->refcnt = __this_cpu_read(mod->refptr->incs) + __this_cpu_read(mod->refptr->decs); 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 91 DEFINE_EVENT(module_refcnt, module_get, 92 93 TP_PROTO(struct module *mod, unsigned long ip), 94 95 TP_ARGS(mod, ip) 96 ); 97 98 DEFINE_EVENT(module_refcnt, module_put, 99 100 TP_PROTO(struct module *mod, unsigned long ip), 101 102 TP_ARGS(mod, ip) 103 ); 104 #endif /* CONFIG_MODULE_UNLOAD */ 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( 113 __field( unsigned long, ip ) 114 __field( bool, wait ) 115 __string( name, name ) 116 ), 117 118 TP_fast_assign( 119 __entry->ip = ip; 120 __entry->wait = wait; 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> 134