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Diffstat (limited to 'include')
-rw-r--r--include/linux/ftrace.h25
1 files changed, 19 insertions, 6 deletions
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index b4ac734ad8d..fc2d5498719 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -313,26 +313,39 @@ ftrace_init_module(struct module *mod,
/*
+ * Structure that defines an entry function trace.
+ */
+struct ftrace_graph_ent {
+ unsigned long func; /* Current function */
+ int depth;
+};
+
+/*
* Structure that defines a return function trace.
*/
struct ftrace_graph_ret {
- unsigned long ret; /* Return address */
unsigned long func; /* Current function */
unsigned long long calltime;
unsigned long long rettime;
/* Number of functions that overran the depth limit for current task */
unsigned long overrun;
+ int depth;
};
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
#define FTRACE_RETFUNC_DEPTH 50
#define FTRACE_RETSTACK_ALLOC_SIZE 32
-/* Type of a callback handler of tracing return function */
-typedef void (*trace_function_graph_t)(struct ftrace_graph_ret *);
+/* 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 */
+
+extern int register_ftrace_graph(trace_func_graph_ret_t retfunc,
+ trace_func_graph_ent_t entryfunc);
+
+/* The current handlers in use */
+extern trace_func_graph_ret_t ftrace_graph_return;
+extern trace_func_graph_ent_t ftrace_graph_entry;
-extern int register_ftrace_graph(trace_function_graph_t func);
-/* The current handler in use */
-extern trace_function_graph_t ftrace_graph_function;
extern void unregister_ftrace_graph(void);
extern void ftrace_graph_init_task(struct task_struct *t);