From 8c56cc8be5b38e3684eba96dc9b3f7ca7e495755 Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Fri, 6 Jul 2012 15:45:39 +0100 Subject: ARM: 7449/1: use generic strnlen_user and strncpy_from_user functions This patch implements the word-at-a-time interface for ARM using the same algorithm as x86. We use the fls macro from ARMv5 onwards, where we have a clz instruction available which saves us a mov instruction when targetting Thumb-2. For older CPUs, we use the magic 0x0ff0001 constant. Big-endian configurations make use of the implementation from asm-generic. With this implemented, we can replace our byte-at-a-time strnlen_user and strncpy_from_user functions with the optimised generic versions. Reviewed-by: Nicolas Pitre Signed-off-by: Will Deacon Signed-off-by: Russell King --- arch/arm/lib/Makefile | 1 - 1 file changed, 1 deletion(-) (limited to 'arch/arm/lib/Makefile') diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile index 992769ae259..d5060dab6e5 100644 --- a/arch/arm/lib/Makefile +++ b/arch/arm/lib/Makefile @@ -8,7 +8,6 @@ lib-y := backtrace.o changebit.o csumipv6.o csumpartial.o \ csumpartialcopy.o csumpartialcopyuser.o clearbit.o \ delay.o findbit.o memchr.o memcpy.o \ memmove.o memset.o memzero.o setbit.o \ - strncpy_from_user.o strnlen_user.o \ strchr.o strrchr.o \ testchangebit.o testclearbit.o testsetbit.o \ ashldi3.o ashrdi3.o lshrdi3.o muldi3.o \ -- cgit v1.2.3-70-g09d2