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-rw-r--r--include/trace/events/module.h134
1 files changed, 134 insertions, 0 deletions
diff --git a/include/trace/events/module.h b/include/trace/events/module.h
new file mode 100644
index 0000000000..097485c73c
--- /dev/null
+++ b/include/trace/events/module.h
@@ -0,0 +1,134 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * 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>