FTRACE_UPDATE_TRACE_FUNC = (1 << 2),
FTRACE_START_FUNC_RET = (1 << 3),
FTRACE_STOP_FUNC_RET = (1 << 4),
+ FTRACE_MAY_SLEEP = (1 << 5),
};
/*
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
+struct fgraph_ops {
+ trace_func_graph_ent_t entryfunc;
+ trace_func_graph_ret_t retfunc;
+};
+
/*
* Stack of return addresses for functions
* of a thread.
function_graph_enter(unsigned long ret, unsigned long func,
unsigned long frame_pointer, unsigned long *retp);
+struct ftrace_ret_stack *
+ftrace_graph_get_ret_stack(struct task_struct *task, int idx);
+
unsigned long ftrace_graph_ret_addr(struct task_struct *task, int *idx,
unsigned long ret, unsigned long *retp);
*/
#define __notrace_funcgraph notrace
-#define FTRACE_NOTRACE_DEPTH 65536
#define FTRACE_RETFUNC_DEPTH 50
#define FTRACE_RETSTACK_ALLOC_SIZE 32
-extern int register_ftrace_graph(trace_func_graph_ret_t retfunc,
- trace_func_graph_ent_t entryfunc);
+
+extern int register_ftrace_graph(struct fgraph_ops *ops);
+extern void unregister_ftrace_graph(struct fgraph_ops *ops);
extern bool ftrace_graph_is_dead(void);
extern void ftrace_graph_stop(void);
extern trace_func_graph_ret_t ftrace_graph_return;
extern trace_func_graph_ent_t ftrace_graph_entry;
-extern void unregister_ftrace_graph(void);
-
extern void ftrace_graph_init_task(struct task_struct *t);
extern void ftrace_graph_exit_task(struct task_struct *t);
extern void ftrace_graph_init_idle_task(struct task_struct *t, int cpu);
-static inline int task_curr_ret_stack(struct task_struct *t)
-{
- return t->curr_ret_stack;
-}
-
static inline void pause_graph_tracing(void)
{
atomic_inc(¤t->tracing_graph_pause);
static inline void ftrace_graph_exit_task(struct task_struct *t) { }
static inline void ftrace_graph_init_idle_task(struct task_struct *t, int cpu) { }
-static inline int register_ftrace_graph(trace_func_graph_ret_t retfunc,
- trace_func_graph_ent_t entryfunc)
-{
- return -1;
-}
-static inline void unregister_ftrace_graph(void) { }
-
-static inline int task_curr_ret_stack(struct task_struct *tsk)
-{
- return -1;
-}
+/* Define as macros as fgraph_ops may not be defined */
+#define register_ftrace_graph(ops) ({ -1; })
+#define unregister_ftrace_graph(ops) do { } while (0)
static inline unsigned long
ftrace_graph_ret_addr(struct task_struct *task, int *idx, unsigned long ret,