1 files changed, 14 insertions, 2 deletions

diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile
index 8f9770f1af19..391f3ab3ff32 100644
--- a/arch/arm/lib/Makefile
+++ b/arch/arm/lib/Makefile
@@ -9,13 +9,25 @@ lib-y		:= backtrace.o changebit.o csumipv6.o csumpartial.o   \
                    copy_page.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 uaccess.o              \
+                   strchr.o strrchr.o                                 \
+                   testchangebit.o testclearbit.o testsetbit.o        \
                    getuser.o putuser.o clear_user.o                   \
                    ashldi3.o ashrdi3.o lshrdi3.o muldi3.o             \
                    ucmpdi2.o lib1funcs.o div64.o sha1.o               \
                    io-readsb.o io-writesb.o io-readsl.o io-writesl.o
 
+# the code in uaccess.S is not preemption safe and
+# probably faster on ARMv3 only
+ifeq ($CONFIG_PREEMPT,y)
+  lib-y += copy_from_user.o copy_to_user.o
+else
+ifneq ($(CONFIG_CPU_32v3),y)
+  lib-y += copy_from_user.o copy_to_user.o
+else
+  lib-y += uaccess.o
+endif
+endif
+
 ifeq ($(CONFIG_CPU_32v3),y)
   lib-y += io-readsw-armv3.o io-writesw-armv3.o
 else