* ADDING - The ops is in the process of being added.
* REMOVING - The ops is in the process of being removed.
* MODIFYING - The ops is in the process of changing its filter functions.
+ * ALLOC_TRAMP - A dynamic trampoline was allocated by the core code.
+ * The arch specific code sets this flag when it allocated a
+ * trampoline. This lets the arch know that it can update the
+ * trampoline in case the callback function changes.
+ * The ftrace_ops trampoline can be set by the ftrace users, and
+ * in such cases the arch must not modify it. Only the arch ftrace
+ * core code should set this flag.
*/
enum {
FTRACE_OPS_FL_ENABLED = 1 << 0,
FTRACE_OPS_FL_ADDING = 1 << 9,
FTRACE_OPS_FL_REMOVING = 1 << 10,
FTRACE_OPS_FL_MODIFYING = 1 << 11,
+ FTRACE_OPS_FL_ALLOC_TRAMP = 1 << 12,
};
#ifdef CONFIG_DYNAMIC_FTRACE
struct ftrace_ops_hash *func_hash;
struct ftrace_ops_hash old_hash;
unsigned long trampoline;
+ unsigned long trampoline_size;
#endif
};
int ftrace_arch_code_modify_prepare(void);
int ftrace_arch_code_modify_post_process(void);
-void ftrace_bug(int err, unsigned long ip);
+struct dyn_ftrace;
+
+void ftrace_bug(int err, struct dyn_ftrace *rec);
struct seq_file;
extern int ftrace_nr_registered_ops(void);
+bool is_ftrace_trampoline(unsigned long addr);
+
/*
* The dyn_ftrace record's flags field is split into two parts.
* the first part which is '0-FTRACE_REF_MAX' is a counter of
size_t cnt, loff_t *ppos) { return -ENODEV; }
static inline int
ftrace_regex_release(struct inode *inode, struct file *file) { return -ENODEV; }
+
+static inline bool is_ftrace_trampoline(unsigned long addr)
+{
+ return false;
+}
#endif /* CONFIG_DYNAMIC_FTRACE */
/* totally disable ftrace - can not re-enable after this */