135 lines
2.8 KiB
C
135 lines
2.8 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Because linux/module.h has tracepoints in the header, and ftrace.h
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* used to include this file, define_trace.h includes linux/module.h
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* But we do not want the module.h to override the TRACE_SYSTEM macro
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* variable that define_trace.h is processing, so we only set it
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* when module events are being processed, which would happen when
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* CREATE_TRACE_POINTS is defined.
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*/
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#ifdef CREATE_TRACE_POINTS
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM module
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#endif
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#if !defined(_TRACE_MODULE_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_MODULE_H
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#include <linux/tracepoint.h>
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#ifdef CONFIG_MODULES
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struct module;
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#define show_module_flags(flags) __print_flags(flags, "", \
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{ (1UL << TAINT_PROPRIETARY_MODULE), "P" }, \
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{ (1UL << TAINT_OOT_MODULE), "O" }, \
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{ (1UL << TAINT_FORCED_MODULE), "F" }, \
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{ (1UL << TAINT_CRAP), "C" }, \
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{ (1UL << TAINT_UNSIGNED_MODULE), "E" })
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TRACE_EVENT(module_load,
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TP_PROTO(struct module *mod),
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TP_ARGS(mod),
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TP_STRUCT__entry(
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__field( unsigned int, taints )
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__string( name, mod->name )
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),
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TP_fast_assign(
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__entry->taints = mod->taints;
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__assign_str(name, mod->name);
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),
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TP_printk("%s %s", __get_str(name), show_module_flags(__entry->taints))
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);
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TRACE_EVENT(module_free,
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TP_PROTO(struct module *mod),
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TP_ARGS(mod),
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TP_STRUCT__entry(
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__string( name, mod->name )
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),
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TP_fast_assign(
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__assign_str(name, mod->name);
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),
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TP_printk("%s", __get_str(name))
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);
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#ifdef CONFIG_MODULE_UNLOAD
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/* trace_module_get/put are only used if CONFIG_MODULE_UNLOAD is defined */
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DECLARE_EVENT_CLASS(module_refcnt,
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TP_PROTO(struct module *mod, unsigned long ip),
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TP_ARGS(mod, ip),
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TP_STRUCT__entry(
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__field( unsigned long, ip )
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__field( int, refcnt )
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__string( name, mod->name )
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),
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TP_fast_assign(
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__entry->ip = ip;
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__entry->refcnt = atomic_read(&mod->refcnt);
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__assign_str(name, mod->name);
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),
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TP_printk("%s call_site=%ps refcnt=%d",
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__get_str(name), (void *)__entry->ip, __entry->refcnt)
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);
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DEFINE_EVENT(module_refcnt, module_get,
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TP_PROTO(struct module *mod, unsigned long ip),
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TP_ARGS(mod, ip)
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);
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DEFINE_EVENT(module_refcnt, module_put,
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TP_PROTO(struct module *mod, unsigned long ip),
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TP_ARGS(mod, ip)
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);
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#endif /* CONFIG_MODULE_UNLOAD */
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TRACE_EVENT(module_request,
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TP_PROTO(char *name, bool wait, unsigned long ip),
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TP_ARGS(name, wait, ip),
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TP_STRUCT__entry(
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__field( unsigned long, ip )
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__field( bool, wait )
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__string( name, name )
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),
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TP_fast_assign(
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__entry->ip = ip;
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__entry->wait = wait;
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__assign_str(name, name);
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),
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TP_printk("%s wait=%d call_site=%ps",
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__get_str(name), (int)__entry->wait, (void *)__entry->ip)
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);
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#endif /* CONFIG_MODULES */
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#endif /* _TRACE_MODULE_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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