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

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

2

arch/powerpc/Kconfig

View file

4

arch/powerpc/include/asm/checksum.h

View file

2

arch/powerpc/lib/Makefile

View file

12

arch/powerpc/lib/checksum_64.S

View file