1 files changed, 12 insertions, 3 deletions

diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index e5ca8ef50e9b..99d0fbcbaf79 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -89,6 +89,9 @@ typedef void (*ftrace_func_t)(unsigned long ip, unsigned long parent_ip,
  *            that the call back has its own recursion protection. If it does
  *            not set this, then the ftrace infrastructure will add recursion
  *            protection for the caller.
+ * STUB   - The ftrace_ops is just a place holder.
+ * INITIALIZED - The ftrace_ops has already been initialized (first use time
+ *            register_ftrace_function() is called, it will initialized the ops)
  */
 enum {
         FTRACE_OPS_FL_ENABLED                   = 1 << 0,
@@ -98,6 +101,8 @@ enum {
         FTRACE_OPS_FL_SAVE_REGS                 = 1 << 4,
         FTRACE_OPS_FL_SAVE_REGS_IF_SUPPORTED    = 1 << 5,
         FTRACE_OPS_FL_RECURSION_SAFE            = 1 << 6,
+        FTRACE_OPS_FL_STUB                      = 1 << 7,
+        FTRACE_OPS_FL_INITIALIZED               = 1 << 8,
 };
 
 struct ftrace_ops {
@@ -108,6 +113,7 @@ struct ftrace_ops {
 #ifdef CONFIG_DYNAMIC_FTRACE
         struct ftrace_hash              *notrace_hash;
         struct ftrace_hash              *filter_hash;
+        struct mutex                    regex_lock;
 #endif
 };
 
@@ -259,8 +265,10 @@ struct ftrace_probe_ops {
         void                    (*func)(unsigned long ip,
                                         unsigned long parent_ip,
                                         void **data);
-        int                     (*callback)(unsigned long ip, void **data);
-        void                    (*free)(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,
@@ -394,7 +402,6 @@ ssize_t ftrace_filter_write(struct file *file, const char __user *ubuf,
                             size_t cnt, loff_t *ppos);
 ssize_t ftrace_notrace_write(struct file *file, const char __user *ubuf,
                              size_t cnt, loff_t *ppos);
-loff_t ftrace_regex_lseek(struct file *file, loff_t offset, int whence);
 int ftrace_regex_release(struct inode *inode, struct file *file);
 
 void __init
@@ -567,6 +574,8 @@ static inline int
 ftrace_regex_release(struct inode *inode, struct file *file) { return -ENODEV; }
 #endif /* CONFIG_DYNAMIC_FTRACE */
 
+loff_t ftrace_filter_lseek(struct file *file, loff_t offset, int whence);
+
 /* totally disable ftrace - can not re-enable after this */
 void ftrace_kill(void);