| 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(LTTNG_TRACE_MODULE_H) || defined(TRACE_HEADER_MULTI_READ) |
| 15 | #define LTTNG_TRACE_MODULE_H |
| 16 | |
| 17 | #include "../../../probes/lttng-tracepoint-event.h" |
| 18 | #include <linux/version.h> |
| 19 | |
| 20 | #ifdef CONFIG_MODULES |
| 21 | |
| 22 | #ifndef _TRACE_MODULE_DEF |
| 23 | #define _TRACE_MODULE_DEF |
| 24 | struct module; |
| 25 | |
| 26 | #endif |
| 27 | |
| 28 | LTTNG_TRACEPOINT_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 | tp_assign(taints, mod->taints) |
| 41 | tp_strcpy(name, mod->name) |
| 42 | ), |
| 43 | |
| 44 | TP_printk("%s %s", __get_str(name), show_module_flags(__entry->taints)) |
| 45 | ) |
| 46 | |
| 47 | LTTNG_TRACEPOINT_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 | tp_strcpy(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 | LTTNG_TRACEPOINT_EVENT_CLASS(module_refcnt, |
| 68 | |
| 69 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) |
| 70 | TP_PROTO(struct module *mod, unsigned long ip), |
| 71 | |
| 72 | TP_ARGS(mod, ip), |
| 73 | #else |
| 74 | TP_PROTO(struct module *mod, unsigned long ip, int refcnt), |
| 75 | |
| 76 | TP_ARGS(mod, ip, refcnt), |
| 77 | #endif |
| 78 | |
| 79 | TP_STRUCT__entry( |
| 80 | __field( unsigned long, ip ) |
| 81 | __field( int, refcnt ) |
| 82 | __string( name, mod->name ) |
| 83 | ), |
| 84 | |
| 85 | TP_fast_assign( |
| 86 | tp_assign(ip, ip) |
| 87 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) |
| 88 | tp_assign(refcnt, __this_cpu_read(mod->refptr->incs) + __this_cpu_read(mod->refptr->decs)) |
| 89 | #else |
| 90 | tp_assign(refcnt, refcnt) |
| 91 | #endif |
| 92 | tp_strcpy(name, mod->name) |
| 93 | ), |
| 94 | |
| 95 | TP_printk("%s call_site=%pf refcnt=%d", |
| 96 | __get_str(name), (void *)__entry->ip, __entry->refcnt) |
| 97 | ) |
| 98 | |
| 99 | LTTNG_TRACEPOINT_EVENT_INSTANCE(module_refcnt, module_get, |
| 100 | |
| 101 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) |
| 102 | TP_PROTO(struct module *mod, unsigned long ip), |
| 103 | |
| 104 | TP_ARGS(mod, ip) |
| 105 | #else |
| 106 | TP_PROTO(struct module *mod, unsigned long ip, int refcnt), |
| 107 | |
| 108 | TP_ARGS(mod, ip, refcnt) |
| 109 | #endif |
| 110 | ) |
| 111 | |
| 112 | LTTNG_TRACEPOINT_EVENT_INSTANCE(module_refcnt, module_put, |
| 113 | |
| 114 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) |
| 115 | TP_PROTO(struct module *mod, unsigned long ip), |
| 116 | |
| 117 | TP_ARGS(mod, ip) |
| 118 | #else |
| 119 | TP_PROTO(struct module *mod, unsigned long ip, int refcnt), |
| 120 | |
| 121 | TP_ARGS(mod, ip, refcnt) |
| 122 | #endif |
| 123 | ) |
| 124 | #endif /* CONFIG_MODULE_UNLOAD */ |
| 125 | |
| 126 | LTTNG_TRACEPOINT_EVENT(module_request, |
| 127 | |
| 128 | TP_PROTO(char *name, bool wait, unsigned long ip), |
| 129 | |
| 130 | TP_ARGS(name, wait, ip), |
| 131 | |
| 132 | TP_STRUCT__entry( |
| 133 | __field( unsigned long, ip ) |
| 134 | __field( bool, wait ) |
| 135 | __string( name, name ) |
| 136 | ), |
| 137 | |
| 138 | TP_fast_assign( |
| 139 | tp_assign(ip, ip) |
| 140 | tp_assign(wait, wait) |
| 141 | tp_strcpy(name, name) |
| 142 | ), |
| 143 | |
| 144 | TP_printk("%s wait=%d call_site=%pf", |
| 145 | __get_str(name), (int)__entry->wait, (void *)__entry->ip) |
| 146 | ) |
| 147 | |
| 148 | #endif /* CONFIG_MODULES */ |
| 149 | |
| 150 | #endif /* LTTNG_TRACE_MODULE_H */ |
| 151 | |
| 152 | /* This part must be outside protection */ |
| 153 | #include "../../../probes/define_trace.h" |