include/trace/events/module.h

   1 #undef TRACE_SYSTEM
   2 #define TRACE_SYSTEM module
   3
   4 #if !defined(_TRACE_MODULE_H) || defined(TRACE_HEADER_MULTI_READ)
   5 #define _TRACE_MODULE_H
   6
   7 #include <linux/tracepoint.h>
   8
   9 #ifdef CONFIG_MODULES
  10
  11 struct module;
  12
  13 #define show_module_flags(flags) __print_flags(flags, "",       \
  14         { (1UL << TAINT_PROPRIETARY_MODULE),    "P" },          \
  15         { (1UL << TAINT_FORCED_MODULE),         "F" },          \
  16         { (1UL << TAINT_CRAP),                  "C" })
  17
  18 TRACE_EVENT(module_load,
  19
  20         TP_PROTO(struct module *mod),
  21
  22         TP_ARGS(mod),
  23
  24         TP_STRUCT__entry(
  25                 __field(        unsigned int,   taints          )
  26                 __string(       name,           mod->name       )
  27         ),
  28
  29         TP_fast_assign(
  30                 __entry->taints = mod->taints;
  31                 __assign_str(name, mod->name);
  32         ),
  33
  34         TP_printk("%s %s", __get_str(name), show_module_flags(__entry->taints))
  35 );
  36
  37 TRACE_EVENT(module_free,
  38
  39         TP_PROTO(struct module *mod),
  40
  41         TP_ARGS(mod),
  42
  43         TP_STRUCT__entry(
  44                 __string(       name,           mod->name       )
  45         ),
  46
  47         TP_fast_assign(
  48                 __assign_str(name, mod->name);
  49         ),
  50
  51         TP_printk("%s", __get_str(name))
  52 );
  53
  54 #ifdef CONFIG_MODULE_UNLOAD
  55 /* trace_module_get/put are only used if CONFIG_MODULE_UNLOAD is defined */
  56
  57 DECLARE_EVENT_CLASS(module_refcnt,
  58
  59         TP_PROTO(struct module *mod, unsigned long ip),
  60
  61         TP_ARGS(mod, ip),
  62
  63         TP_STRUCT__entry(
  64                 __field(        unsigned long,  ip              )
  65                 __field(        int,            refcnt          )
  66                 __string(       name,           mod->name       )
  67         ),
  68
  69         TP_fast_assign(
  70                 __entry->ip     = ip;
  71                 __entry->refcnt = __this_cpu_read(mod->refptr->incs) + __this_cpu_read(mod->refptr->decs);
  72                 __assign_str(name, mod->name);
  73         ),
  74
  75         TP_printk("%s call_site=%pf refcnt=%d",
  76                   __get_str(name), (void *)__entry->ip, __entry->refcnt)
  77 );
  78
  79 DEFINE_EVENT(module_refcnt, module_get,
  80
  81         TP_PROTO(struct module *mod, unsigned long ip),
  82
  83         TP_ARGS(mod, ip)
  84 );
  85
  86 DEFINE_EVENT(module_refcnt, module_put,
  87
  88         TP_PROTO(struct module *mod, unsigned long ip),
  89
  90         TP_ARGS(mod, ip)
  91 );
  92 #endif /* CONFIG_MODULE_UNLOAD */
  93
  94 TRACE_EVENT(module_request,
  95
  96         TP_PROTO(char *name, bool wait, unsigned long ip),
  97
  98         TP_ARGS(name, wait, ip),
  99
 100         TP_STRUCT__entry(
 101                 __field(        bool,           wait            )
 102                 __field(        unsigned long,  ip              )
 103                 __string(       name,           name            )
 104         ),
 105
 106         TP_fast_assign(
 107                 __entry->wait   = wait;
 108                 __entry->ip     = ip;
 109                 __assign_str(name, name);
 110         ),
 111
 112         TP_printk("%s wait=%d call_site=%pf",
 113                   __get_str(name), (int)__entry->wait, (void *)__entry->ip)
 114 );
 115
 116 #endif /* CONFIG_MODULES */
 117
 118 #endif /* _TRACE_MODULE_H */
 119
 120 /* This part must be outside protection */
 121 #include <trace/define_trace.h>
 122