2 * Because linux/module.h has tracepoints in the header, and ftrace.h
3 * eventually includes this file, define_trace.h includes linux/module.h
4 * But we do not want the module.h to override the TRACE_SYSTEM macro
5 * variable that define_trace.h is processing, so we only set it
6 * when module events are being processed, which would happen when
7 * CREATE_TRACE_POINTS is defined.
9 #ifdef CREATE_TRACE_POINTS
11 #define TRACE_SYSTEM module
14 #if !defined(_TRACE_MODULE_H) || defined(TRACE_HEADER_MULTI_READ)
15 #define _TRACE_MODULE_H
17 #include <linux/tracepoint.h>
18 #include <linux/version.h>
22 #ifndef _TRACE_MODULE_DEF
23 #define _TRACE_MODULE_DEF
26 #define show_module_flags(flags) __print_flags(flags, "", \
27 { (1UL << TAINT_PROPRIETARY_MODULE), "P" }, \
28 { (1UL << TAINT_FORCED_MODULE), "F" }, \
29 { (1UL << TAINT_CRAP), "C" })
32 TRACE_EVENT(module_load
,
34 TP_PROTO(struct module
*mod
),
39 __field( unsigned int, taints
)
40 __string( name
, mod
->name
)
44 tp_assign(taints
, mod
->taints
)
45 tp_strcpy(name
, mod
->name
)
48 TP_printk("%s %s", __get_str(name
), show_module_flags(__entry
->taints
))
51 TRACE_EVENT(module_free
,
53 TP_PROTO(struct module
*mod
),
58 __string( name
, mod
->name
)
62 tp_strcpy(name
, mod
->name
)
65 TP_printk("%s", __get_str(name
))
68 #ifdef CONFIG_MODULE_UNLOAD
69 /* trace_module_get/put are only used if CONFIG_MODULE_UNLOAD is defined */
71 DECLARE_EVENT_CLASS(module_refcnt
,
73 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
74 TP_PROTO(struct module
*mod
, unsigned long ip
),
78 TP_PROTO(struct module
*mod
, unsigned long ip
, int refcnt
),
80 TP_ARGS(mod
, ip
, refcnt
),
84 __field( unsigned long, ip
)
85 __field( int, refcnt
)
86 __string( name
, mod
->name
)
91 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
92 tp_assign(refcnt
, __this_cpu_read(mod
->refptr
->incs
) + __this_cpu_read(mod
->refptr
->decs
))
94 tp_assign(refcnt
, refcnt
)
96 tp_strcpy(name
, mod
->name
)
99 TP_printk("%s call_site=%pf refcnt=%d",
100 __get_str(name
), (void *)__entry
->ip
, __entry
->refcnt
)
103 DEFINE_EVENT(module_refcnt
, module_get
,
105 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
106 TP_PROTO(struct module
*mod
, unsigned long ip
),
110 TP_PROTO(struct module
*mod
, unsigned long ip
, int refcnt
),
112 TP_ARGS(mod
, ip
, refcnt
)
116 DEFINE_EVENT(module_refcnt
, module_put
,
118 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
119 TP_PROTO(struct module
*mod
, unsigned long ip
),
123 TP_PROTO(struct module
*mod
, unsigned long ip
, int refcnt
),
125 TP_ARGS(mod
, ip
, refcnt
)
128 #endif /* CONFIG_MODULE_UNLOAD */
130 TRACE_EVENT(module_request
,
132 TP_PROTO(char *name
, bool wait
, unsigned long ip
),
134 TP_ARGS(name
, wait
, ip
),
137 __field( unsigned long, ip
)
138 __field( bool, wait
)
139 __string( name
, name
)
144 tp_assign(wait
, wait
)
145 tp_strcpy(name
, name
)
148 TP_printk("%s wait=%d call_site=%pf",
149 __get_str(name
), (int)__entry
->wait
, (void *)__entry
->ip
)
152 #endif /* CONFIG_MODULES */
154 #endif /* _TRACE_MODULE_H */
156 /* This part must be outside protection */
157 #include "../../../probes/define_trace.h"
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