can_nice         1654 include/linux/sched.h extern int can_nice(const struct task_struct *p, const int nice);
can_nice         5033 kernel/sched.c 	if (increment < 0 && !can_nice(current, nice))
can_nice          124 kernel/sys.c   	if (niceval < task_nice(p) && !can_nice(p, niceval)) {