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-rw-r--r--include/linux/ftrace.h18
1 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index 740c97dcf9c..90dbc0ee204 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -32,6 +32,24 @@ extern void mcount(void);
# define clear_ftrace_function(ops) do { } while (0)
#endif /* CONFIG_FTRACE */
+#ifdef CONFIG_DYNAMIC_FTRACE
+# define FTRACE_HASHBITS 10
+# define FTRACE_HASHSIZE (1<<FTRACE_HASHBITS)
+
+struct dyn_ftrace {
+ struct hlist_node node;
+ unsigned long ip;
+};
+
+/* defined in arch */
+extern struct dyn_ftrace *
+ftrace_alloc_shutdown_node(unsigned long ip);
+extern int ftrace_shutdown_arch_init(void);
+extern void ftrace_code_disable(struct dyn_ftrace *rec);
+extern void ftrace_startup_code(void);
+extern void ftrace_shutdown_code(void);
+extern void ftrace_shutdown_replenish(void);
+#endif
#ifdef CONFIG_FRAME_POINTER
/* TODO: need to fix this for ARM */