arm_clear_user    546 arch/arm/include/asm/uaccess.h arm_clear_user(void __user *addr, unsigned long n);
arm_clear_user    554 arch/arm/include/asm/uaccess.h 	n = arm_clear_user(addr, n);
arm_clear_user    101 arch/arm/kernel/armksyms.c EXPORT_SYMBOL(arm_clear_user);