diff options
author | Nicolas Pitre <nicolas.pitre@linaro.org> | 2015-01-15 17:41:54 -0500 |
---|---|---|
committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2015-01-16 09:49:08 -0500 |
commit | c25630381c6e093819d86d9618798db932cc2d90 (patch) | |
tree | 6091a27765e09308662ec19db31b653ecc2d4779 /arch/arm/lib/Makefile | |
parent | 0b7857dbeb256d1a9c0c606ec4b5f417e159040b (diff) |
ARM: 8285/1: remove ARMv3 user access code again
This code was restored with commit 080fc66fb5 ("ARM: Bring back ARMv3 IO
and user access code") because the RiscPC memory bus does not understand
half-word load/stores. However only the IO code needed restoring since
the alternative user access code contains no half-word accesses, is
already used when CONFIG_PREEMPT is set and runs faster on a StrongARM.
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/lib/Makefile')
-rw-r--r-- | arch/arm/lib/Makefile | 15 |
1 files changed, 2 insertions, 13 deletions
diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile index 0573faab96ad..d8a780799506 100644 --- a/arch/arm/lib/Makefile +++ b/arch/arm/lib/Makefile | |||
@@ -15,19 +15,8 @@ lib-y := backtrace.o changebit.o csumipv6.o csumpartial.o \ | |||
15 | io-readsb.o io-writesb.o io-readsl.o io-writesl.o \ | 15 | io-readsb.o io-writesb.o io-readsl.o io-writesl.o \ |
16 | call_with_stack.o bswapsdi2.o | 16 | call_with_stack.o bswapsdi2.o |
17 | 17 | ||
18 | mmu-y := clear_user.o copy_page.o getuser.o putuser.o | 18 | mmu-y := clear_user.o copy_page.o getuser.o putuser.o \ |
19 | 19 | copy_from_user.o copy_to_user.o | |
20 | # the code in uaccess.S is not preemption safe and | ||
21 | # probably faster on ARMv3 only | ||
22 | ifeq ($(CONFIG_PREEMPT),y) | ||
23 | mmu-y += copy_from_user.o copy_to_user.o | ||
24 | else | ||
25 | ifneq ($(CONFIG_CPU_32v3),y) | ||
26 | mmu-y += copy_from_user.o copy_to_user.o | ||
27 | else | ||
28 | mmu-y += uaccess.o | ||
29 | endif | ||
30 | endif | ||
31 | 20 | ||
32 | # using lib_ here won't override already available weak symbols | 21 | # using lib_ here won't override already available weak symbols |
33 | obj-$(CONFIG_UACCESS_WITH_MEMCPY) += uaccess_with_memcpy.o | 22 | obj-$(CONFIG_UACCESS_WITH_MEMCPY) += uaccess_with_memcpy.o |