arch_prctl
SYSCALL_DEFINE2(arch_prctl, int, option, unsigned long, arg2)
extern long arch_prctl(struct task_struct *task, int option,
ret = arch_prctl(child, data, (void __user *) addr);
SYSCALL_DEFINE2(arch_prctl, int, option, unsigned long, arg2)
SYSCALL_DEFINE2(arch_prctl, int, option, unsigned long, arg2)
return arch_prctl(current, option, (unsigned long __user *) arg2);