2 files changed, 8 insertions, 1 deletions

diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index afba918c623c..469ceb3e85ba 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -371,11 +371,13 @@ struct ftrace_graph_ret {
 #define FTRACE_RETSTACK_ALLOC_SIZE 32
 /* Type of the callback handlers for tracing function graph*/
 typedef void (*trace_func_graph_ret_t)(struct ftrace_graph_ret *); /* return */
-typedef void (*trace_func_graph_ent_t)(struct ftrace_graph_ent *); /* entry */
+typedef int (*trace_func_graph_ent_t)(struct ftrace_graph_ent *); /* entry */
 
 extern int register_ftrace_graph(trace_func_graph_ret_t retfunc,
                                 trace_func_graph_ent_t entryfunc);
 
+extern void ftrace_graph_stop(void);
+
 /* The current handlers in use */
 extern trace_func_graph_ret_t ftrace_graph_return;
 extern trace_func_graph_ent_t ftrace_graph_entry;
diff --git a/include/linux/ring_buffer.h b/include/linux/ring_buffer.h
index 3bb87a753fa3..1a350a847edd 100644
--- a/include/linux/ring_buffer.h
+++ b/include/linux/ring_buffer.h
@@ -124,6 +124,11 @@ void tracing_on(void);
 void tracing_off(void);
 void tracing_off_permanent(void);
 
+void *ring_buffer_alloc_read_page(struct ring_buffer *buffer);
+void ring_buffer_free_read_page(struct ring_buffer *buffer, void *data);
+int ring_buffer_read_page(struct ring_buffer *buffer,
+                          void **data_page, int cpu, int full);
+
 enum ring_buffer_flags {
         RB_FL_OVERWRITE         = 1 << 0,
 };