include/trace/events/module.h

Source file repositories/reference/linux-study-clean/include/trace/events/module.h

File Facts

System
Linux kernel
Corpus path
include/trace/events/module.h
Extension
.h
Size
2812 bytes
Lines
135
Domain
Repository Root And Misc
Bucket
include
Inferred role
Repository Root And Misc: implementation source
Status
source implementation candidate

Why This File Exists

Top-level or miscellaneous repository surface. Use this as map coverage unless a later manual pass promotes the file into a deeper subsystem dossier.

Dependency Surface

Detected Declarations

Annotated Snippet

#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);
	),

	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);
	),

	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);
	),

	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,

Annotation

Implementation Notes