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authorSteven Rostedt (VMware) <rostedt@goodmis.org>2017-03-31 19:01:14 -0400
committerSteven Rostedt (VMware) <rostedt@goodmis.org>2017-04-18 13:49:59 -0400
commitec19b85913486993d7d6f747beed1a711afd47d8 (patch)
tree5dd723c7fb221fc0262c78a19a6ddb462436acb8 /kernel
parenta9064f676ed6de7bf3a07e26fc19494d48fa4619 (diff)
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ftrace: Move the probe function into the tracing directory
As nothing outside the tracing directory uses the function probes mechanism, I'm moving the prototypes out of the include/linux/ftrace.h and into the local kernel/trace/trace.h header. I plan on making them hook to the trace_array structure which is local to kernel/trace, and I do not want to expose it to the rest of the kernel. This requires that the probe functions must also be local to tracing. But luckily nothing else uses them. Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/trace/trace.h25
1 files changed, 25 insertions, 0 deletions
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 31a4997b67c6..2ff6d49fa5ca 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -923,6 +923,31 @@ static inline void ftrace_pid_follow_fork(struct trace_array *tr, bool enable) {
#endif /* CONFIG_FUNCTION_TRACER */
#if defined(CONFIG_FUNCTION_TRACER) && defined(CONFIG_DYNAMIC_FTRACE)
+
+struct ftrace_probe_ops {
+ void (*func)(unsigned long ip,
+ unsigned long parent_ip,
+ void **data);
+ int (*init)(struct ftrace_probe_ops *ops,
+ unsigned long ip, void **data);
+ void (*free)(struct ftrace_probe_ops *ops,
+ unsigned long ip, void **data);
+ int (*print)(struct seq_file *m,
+ unsigned long ip,
+ struct ftrace_probe_ops *ops,
+ void *data);
+};
+
+extern int
+register_ftrace_function_probe(char *glob, struct ftrace_probe_ops *ops,
+ void *data);
+extern void
+unregister_ftrace_function_probe(char *glob, struct ftrace_probe_ops *ops,
+ void *data);
+extern void
+unregister_ftrace_function_probe_func(char *glob, struct ftrace_probe_ops *ops);
+extern void unregister_ftrace_function_probe_all(char *glob);
+
void ftrace_create_filter_files(struct ftrace_ops *ops,
struct dentry *parent);
void ftrace_destroy_filter_files(struct ftrace_ops *ops);