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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Because linux/module.h has tracepoints in the header, and ftrace.h
* eventually includes 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(LTTNG_TRACE_MODULE_H) || defined(TRACE_HEADER_MULTI_READ)
#define LTTNG_TRACE_MODULE_H
#include <probes/lttng-tracepoint-event.h>
#include <linux/version.h>
#ifdef CONFIG_MODULES
#ifndef _TRACE_MODULE_DEF
#define _TRACE_MODULE_DEF
struct module;
#endif
LTTNG_TRACEPOINT_EVENT(module_load,
TP_PROTO(struct module *mod),
TP_ARGS(mod),
TP_FIELDS(
ctf_integer(unsigned int, taints, mod->taints)
ctf_string(name, mod->name)
)
)
LTTNG_TRACEPOINT_EVENT(module_free,
TP_PROTO(struct module *mod),
TP_ARGS(mod),
TP_FIELDS(
ctf_string(name, mod->name)
)
)
#ifdef CONFIG_MODULE_UNLOAD
/* trace_module_get/put are only used if CONFIG_MODULE_UNLOAD is defined */
LTTNG_TRACEPOINT_EVENT_CLASS(module_refcnt,
TP_PROTO(struct module *mod, unsigned long ip),
TP_ARGS(mod, ip),
TP_FIELDS(
ctf_integer_hex(unsigned long, ip, ip)
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,19,0))
ctf_integer(int, refcnt, atomic_read(&mod->refcnt))
#else
ctf_integer(int, refcnt, __this_cpu_read(mod->refptr->incs) + __this_cpu_read(mod->refptr->decs))
#endif
ctf_string(name, mod->name)
)
)
LTTNG_TRACEPOINT_EVENT_INSTANCE(module_refcnt, module_get,
TP_PROTO(struct module *mod, unsigned long ip),
TP_ARGS(mod, ip)
)
LTTNG_TRACEPOINT_EVENT_INSTANCE(module_refcnt, module_put,
TP_PROTO(struct module *mod, unsigned long ip),
TP_ARGS(mod, ip)
)
#endif /* CONFIG_MODULE_UNLOAD */
LTTNG_TRACEPOINT_EVENT(module_request,
TP_PROTO(char *name, bool wait, unsigned long ip),
TP_ARGS(name, wait, ip),
TP_FIELDS(
ctf_integer_hex(unsigned long, ip, ip)
ctf_integer(bool, wait, wait)
ctf_string(name, name)
)
)
#endif /* CONFIG_MODULES */
#endif /* LTTNG_TRACE_MODULE_H */
/* This part must be outside protection */
#include <probes/define_trace.h>
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