Release 4.12 include/trace/events/module.h

/*
 * Because linux/module.h has tracepoints in the header, and ftrace.h
 * used to include this file, define_trace.h includes linux/module.h
 * But we do not want the module.h to override the TRACE_SYSTEM macro
 * variable that define_trace.h is processing, so we only set it
 * when module events are being processed, which would happen when
 * CREATE_TRACE_POINTS is defined.
 */
#ifdef CREATE_TRACE_POINTS

#undef TRACE_SYSTEM

#define TRACE_SYSTEM module
#endif

#if !defined(_TRACE_MODULE_H) || defined(TRACE_HEADER_MULTI_READ)

#define _TRACE_MODULE_H

#include <linux/tracepoint.h>

#ifdef CONFIG_MODULES

struct module;


#define show_module_flags(flags) __print_flags(flags, "",        \
        { (1UL << TAINT_PROPRIETARY_MODULE),    "P" },          \
        { (1UL << TAINT_OOT_MODULE),            "O" },          \
        { (1UL << TAINT_FORCED_MODULE),         "F" },          \
        { (1UL << TAINT_CRAP),                  "C" },          \
        { (1UL << TAINT_UNSIGNED_MODULE),       "E" })

TRACE_EVENT(module_load,

	TP_PROTO(struct module *mod),

	TP_ARGS(mod),

	TP_STRUCT__entry(
                __field(        unsigned int,   taints          )
                __string(       name,           mod->name       )
        ),

	TP_fast_assign(
                __entry->taints = mod->taints;
                __assign_str(name, mod->name);
        ),

	TP_printk("%s %s", __get_str(name), show_module_flags(__entry->taints))
);

TRACE_EVENT(module_free,

	TP_PROTO(struct module *mod),

	TP_ARGS(mod),

	TP_STRUCT__entry(
                __string(       name,           mod->name       )
        ),

	TP_fast_assign(
                __assign_str(name, mod->name);
        ),

	TP_printk("%s", __get_str(name))
);

#ifdef CONFIG_MODULE_UNLOAD
/* trace_module_get/put are only used if CONFIG_MODULE_UNLOAD is defined */

DECLARE_EVENT_CLASS(module_refcnt,

	TP_PROTO(struct module *mod, unsigned long ip),

	TP_ARGS(mod, ip),

	TP_STRUCT__entry(
                __field(        unsigned long,  ip              )
                __field(        int,            refcnt          )
                __string(       name,           mod->name       )
        ),

	TP_fast_assign(
                __entry->ip     = ip;
                __entry->refcnt = atomic_read(&mod->refcnt);
                __assign_str(name, mod->name);
        ),

	TP_printk("%s call_site=%ps refcnt=%d",
                  __get_str(name), (void *)__entry->ip, __entry->refcnt)
);

DEFINE_EVENT(module_refcnt, module_get,

	TP_PROTO(struct module *mod, unsigned long ip),

	TP_ARGS(mod, ip)
);

DEFINE_EVENT(module_refcnt, module_put,

	TP_PROTO(struct module *mod, unsigned long ip),

	TP_ARGS(mod, ip)
);
#endif /* CONFIG_MODULE_UNLOAD */

TRACE_EVENT(module_request,

	TP_PROTO(char *name, bool wait, unsigned long ip),

	TP_ARGS(name, wait, ip),

	TP_STRUCT__entry(
                __field(        unsigned long,  ip              )
                __field(        bool,           wait            )
                __string(       name,           name            )
        ),

	TP_fast_assign(
                __entry->ip     = ip;
                __entry->wait   = wait;
                __assign_str(name, name);
        ),

	TP_printk("%s wait=%d call_site=%ps",
                  __get_str(name), (int)__entry->wait, (void *)__entry->ip)
);

#endif /* CONFIG_MODULES */

#endif /* _TRACE_MODULE_H */

/* This part must be outside protection */
#include <trace/define_trace.h>
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Directory: include/trace/events

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