aboutsummaryrefslogtreecommitdiffstats
path: root/include/linux/tracepoint.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/tracepoint.h')
-rw-r--r--include/linux/tracepoint.h49
1 files changed, 31 insertions, 18 deletions
diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h
index 812b2553dfd8..9d30ee469c2a 100644
--- a/include/linux/tracepoint.h
+++ b/include/linux/tracepoint.h
@@ -6,7 +6,7 @@
6 * 6 *
7 * See Documentation/trace/tracepoints.txt. 7 * See Documentation/trace/tracepoints.txt.
8 * 8 *
9 * (C) Copyright 2008 Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> 9 * Copyright (C) 2008-2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
10 * 10 *
11 * Heavily inspired from the Linux Kernel Markers. 11 * Heavily inspired from the Linux Kernel Markers.
12 * 12 *
@@ -21,6 +21,7 @@
21 21
22struct module; 22struct module;
23struct tracepoint; 23struct tracepoint;
24struct notifier_block;
24 25
25struct tracepoint_func { 26struct tracepoint_func {
26 void *func; 27 void *func;
@@ -35,31 +36,38 @@ struct tracepoint {
35 struct tracepoint_func __rcu *funcs; 36 struct tracepoint_func __rcu *funcs;
36}; 37};
37 38
38/*
39 * Connect a probe to a tracepoint.
40 * Internal API, should not be used directly.
41 */
42extern int tracepoint_probe_register(const char *name, void *probe, void *data);
43
44/*
45 * Disconnect a probe from a tracepoint.
46 * Internal API, should not be used directly.
47 */
48extern int 39extern int
49tracepoint_probe_unregister(const char *name, void *probe, void *data); 40tracepoint_probe_register(struct tracepoint *tp, void *probe, void *data);
41extern int
42tracepoint_probe_unregister(struct tracepoint *tp, void *probe, void *data);
43extern void
44for_each_kernel_tracepoint(void (*fct)(struct tracepoint *tp, void *priv),
45 void *priv);
50 46
51#ifdef CONFIG_MODULES 47#ifdef CONFIG_MODULES
52struct tp_module { 48struct tp_module {
53 struct list_head list; 49 struct list_head list;
54 unsigned int num_tracepoints; 50 struct module *mod;
55 struct tracepoint * const *tracepoints_ptrs;
56}; 51};
52
57bool trace_module_has_bad_taint(struct module *mod); 53bool trace_module_has_bad_taint(struct module *mod);
54extern int register_tracepoint_module_notifier(struct notifier_block *nb);
55extern int unregister_tracepoint_module_notifier(struct notifier_block *nb);
58#else 56#else
59static inline bool trace_module_has_bad_taint(struct module *mod) 57static inline bool trace_module_has_bad_taint(struct module *mod)
60{ 58{
61 return false; 59 return false;
62} 60}
61static inline
62int register_tracepoint_module_notifier(struct notifier_block *nb)
63{
64 return 0;
65}
66static inline
67int unregister_tracepoint_module_notifier(struct notifier_block *nb)
68{
69 return 0;
70}
63#endif /* CONFIG_MODULES */ 71#endif /* CONFIG_MODULES */
64 72
65/* 73/*
@@ -72,6 +80,11 @@ static inline void tracepoint_synchronize_unregister(void)
72 synchronize_sched(); 80 synchronize_sched();
73} 81}
74 82
83#ifdef CONFIG_HAVE_SYSCALL_TRACEPOINTS
84extern void syscall_regfunc(void);
85extern void syscall_unregfunc(void);
86#endif /* CONFIG_HAVE_SYSCALL_TRACEPOINTS */
87
75#define PARAMS(args...) args 88#define PARAMS(args...) args
76 89
77#endif /* _LINUX_TRACEPOINT_H */ 90#endif /* _LINUX_TRACEPOINT_H */
@@ -160,14 +173,14 @@ static inline void tracepoint_synchronize_unregister(void)
160 static inline int \ 173 static inline int \
161 register_trace_##name(void (*probe)(data_proto), void *data) \ 174 register_trace_##name(void (*probe)(data_proto), void *data) \
162 { \ 175 { \
163 return tracepoint_probe_register(#name, (void *)probe, \ 176 return tracepoint_probe_register(&__tracepoint_##name, \
164 data); \ 177 (void *)probe, data); \
165 } \ 178 } \
166 static inline int \ 179 static inline int \
167 unregister_trace_##name(void (*probe)(data_proto), void *data) \ 180 unregister_trace_##name(void (*probe)(data_proto), void *data) \
168 { \ 181 { \
169 return tracepoint_probe_unregister(#name, (void *)probe, \ 182 return tracepoint_probe_unregister(&__tracepoint_##name,\
170 data); \ 183 (void *)probe, data); \
171 } \ 184 } \
172 static inline void \ 185 static inline void \
173 check_trace_callback_type_##name(void (*cb)(data_proto)) \ 186 check_trace_callback_type_##name(void (*cb)(data_proto)) \