#include <linux/types.h>
#include <linux/kallsyms.h>
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
extern int ftrace_enabled;
extern int
extern void ftrace_stub(unsigned long a0, unsigned long a1);
-#else /* !CONFIG_FTRACE */
+#else /* !CONFIG_FUNCTION_TRACER */
# define register_ftrace_function(ops) do { } while (0)
# define unregister_ftrace_function(ops) do { } while (0)
# define clear_ftrace_function(ops) do { } while (0)
-static inline void ftrace_kill_atomic(void) { }
-#endif /* CONFIG_FTRACE */
+static inline void ftrace_kill(void) { }
+#endif /* CONFIG_FUNCTION_TRACER */
#ifdef CONFIG_DYNAMIC_FTRACE
-# define FTRACE_HASHBITS 10
-# define FTRACE_HASHSIZE (1<<FTRACE_HASHBITS)
enum {
FTRACE_FL_FREE = (1 << 0),
};
struct dyn_ftrace {
- struct hlist_node node;
- unsigned long ip; /* address of mcount call-site */
- unsigned long flags;
+ struct list_head list;
+ unsigned long ip; /* address of mcount call-site */
+ unsigned long flags;
};
int ftrace_force_update(void);
extern unsigned char *ftrace_nop_replace(void);
extern unsigned char *ftrace_call_replace(unsigned long ip, unsigned long addr);
extern int ftrace_dyn_arch_init(void *data);
-extern int ftrace_mcount_set(unsigned long *data);
-extern int ftrace_modify_code(unsigned long ip, unsigned char *old_code,
- unsigned char *new_code);
extern int ftrace_update_ftrace_func(ftrace_func_t func);
extern void ftrace_caller(void);
extern void ftrace_call(void);
extern void mcount_call(void);
+/**
+ * ftrace_modify_code - modify code segment
+ * @ip: the address of the code segment
+ * @old_code: the contents of what is expected to be there
+ * @new_code: the code to patch in
+ *
+ * This is a very sensitive operation and great care needs
+ * to be taken by the arch. The operation should carefully
+ * read the location, check to see if what is read is indeed
+ * what we expect it to be, and then on success of the compare,
+ * it should write to the location.
+ *
+ * Return must be:
+ * 0 on success
+ * -EFAULT on error reading the location
+ * -EINVAL on a failed compare of the contents
+ * -EPERM on error writing to the location
+ * Any other value will be considered a failure.
+ */
+extern int ftrace_modify_code(unsigned long ip, unsigned char *old_code,
+ unsigned char *new_code);
+
extern int skip_trace(unsigned long ip);
extern void ftrace_release(void *start, unsigned long size);
/* totally disable ftrace - can not re-enable after this */
void ftrace_kill(void);
-void ftrace_kill_atomic(void);
static inline void tracer_disable(void)
{
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
ftrace_enabled = 0;
#endif
}
*/
static inline int __ftrace_enabled_save(void)
{
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
int saved_ftrace_enabled = ftrace_enabled;
ftrace_enabled = 0;
return saved_ftrace_enabled;
static inline void __ftrace_enabled_restore(int enabled)
{
-#ifdef CONFIG_FTRACE
+#ifdef CONFIG_FUNCTION_TRACER
ftrace_enabled = enabled;
#endif
}
#endif
#ifdef CONFIG_TRACING
+extern int ftrace_dump_on_oops;
+
extern void
ftrace_special(unsigned long arg1, unsigned long arg2, unsigned long arg3);