295 	struct trace_array *tr = data;  in ftrace_syscall_enter()  local
311 	ftrace_file = rcu_dereference_sched(tr->enter_syscall_files[syscall_nr]);  in ftrace_syscall_enter()
327 	buffer = tr->trace_buffer.buffer;  in ftrace_syscall_enter()
343 	struct trace_array *tr = data;  in ftrace_syscall_exit()  local
358 	ftrace_file = rcu_dereference_sched(tr->exit_syscall_files[syscall_nr]);  in ftrace_syscall_exit()
372 	buffer = tr->trace_buffer.buffer;  in ftrace_syscall_exit()
390 	struct trace_array *tr = file->tr;  in reg_event_syscall_enter()  local
398 	if (!tr->sys_refcount_enter)  in reg_event_syscall_enter()
399 		ret = register_trace_sys_enter(ftrace_syscall_enter, tr);  in reg_event_syscall_enter()
401 		rcu_assign_pointer(tr->enter_syscall_files[num], file);  in reg_event_syscall_enter()
402 		tr->sys_refcount_enter++;  in reg_event_syscall_enter()
411 	struct trace_array *tr = file->tr;  in unreg_event_syscall_enter()  local
418 	tr->sys_refcount_enter--;  in unreg_event_syscall_enter()
419 	RCU_INIT_POINTER(tr->enter_syscall_files[num], NULL);  in unreg_event_syscall_enter()
420 	if (!tr->sys_refcount_enter)  in unreg_event_syscall_enter()
421 		unregister_trace_sys_enter(ftrace_syscall_enter, tr);  in unreg_event_syscall_enter()
428 	struct trace_array *tr = file->tr;  in reg_event_syscall_exit()  local
436 	if (!tr->sys_refcount_exit)  in reg_event_syscall_exit()
437 		ret = register_trace_sys_exit(ftrace_syscall_exit, tr);  in reg_event_syscall_exit()
439 		rcu_assign_pointer(tr->exit_syscall_files[num], file);  in reg_event_syscall_exit()
440 		tr->sys_refcount_exit++;  in reg_event_syscall_exit()
449 	struct trace_array *tr = file->tr;  in unreg_event_syscall_exit()  local
456 	tr->sys_refcount_exit--;  in unreg_event_syscall_exit()
457 	RCU_INIT_POINTER(tr->exit_syscall_files[num], NULL);  in unreg_event_syscall_exit()
458 	if (!tr->sys_refcount_exit)  in unreg_event_syscall_exit()
459 		unregister_trace_sys_exit(ftrace_syscall_exit, tr);  in unreg_event_syscall_exit()