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_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> 132