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authorSteven Rostedt (VMware) <rostedt@goodmis.org>2017-03-31 19:21:41 -0400
committerSteven Rostedt (VMware) <rostedt@goodmis.org>2017-04-20 22:06:33 -0400
commit92a68fa047ca5b8e1991af2d50b23ad9452613cd (patch)
tree2528b86a5b31c1beb708f9a837f9e08556f4b807 /kernel
parentec19b85913486993d7d6f747beed1a711afd47d8 (diff)
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op-kernel-dev-92a68fa047ca5b8e1991af2d50b23ad9452613cd.tar.gz
ftrace: Move the function commands into the tracing directory
As nothing outside the tracing directory uses the function command 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 command 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.h20
1 files changed, 20 insertions, 0 deletions
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 2ff6d49..a63411c 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -880,6 +880,13 @@ print_graph_function_flags(struct trace_iterator *iter, u32 flags)
extern struct list_head ftrace_pids;
#ifdef CONFIG_FUNCTION_TRACER
+struct ftrace_func_command {
+ struct list_head list;
+ char *name;
+ int (*func)(struct ftrace_hash *hash,
+ char *func, char *cmd,
+ char *params, int enable);
+};
extern bool ftrace_filter_param __initdata;
static inline int ftrace_trace_task(struct trace_array *tr)
{
@@ -948,10 +955,23 @@ extern void
unregister_ftrace_function_probe_func(char *glob, struct ftrace_probe_ops *ops);
extern void unregister_ftrace_function_probe_all(char *glob);
+int register_ftrace_command(struct ftrace_func_command *cmd);
+int unregister_ftrace_command(struct ftrace_func_command *cmd);
+
void ftrace_create_filter_files(struct ftrace_ops *ops,
struct dentry *parent);
void ftrace_destroy_filter_files(struct ftrace_ops *ops);
#else
+struct ftrace_func_command;
+
+static inline __init int register_ftrace_command(struct ftrace_func_command *cmd)
+{
+ return -EINVAL;
+}
+static inline __init int unregister_ftrace_command(char *cmd_name)
+{
+ return -EINVAL;
+}
/*
* The ops parameter passed in is usually undefined.
* This must be a macro.
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