xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

powerpc/64: Use optimized checksum routines on little-endian

Browse Source 
Currently we have optimized hand-coded assembly checksum routines for
big-endian 64-bit systems, but for little-endian we use the generic C
routines. This modifies the optimized routines to work for
little-endian. With this, we no longer need to enable
CONFIG_GENERIC_CSUM. This also fixes a couple of comments in
checksum_64.S so they accurately reflect what the associated instruction
does.

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
[mpe: Use the more common __BIG_ENDIAN__]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Paul Mackerras
2016-11-03 16:15:42 +11:00
committed by Michael Ellerman
parent b492f7e4e0
commit d4fde568a3
4 changed files with 15 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/powerpc/lib/Makefile
View File

@@ -21,9 +21,7 @@ obj64-y += copypage_64.o copyuser_64.o usercopy_64.o mem_64.o hweight_64.o \
obj64-$(CONFIG_SMP) += locks.o
obj64-$(CONFIG_ALTIVEC) += vmx-helper.o
ifeq ($(CONFIG_GENERIC_CSUM),)
obj-y += checksum_$(BITS).o checksum_wrappers.o
endif
obj-$(CONFIG_PPC_EMULATE_SSTEP) += sstep.o ldstfp.o