This patch optimises csum_partial_copy_generic() by making use of cache
instructions (dcbt/dcbz) just like copy_tofrom_user() does
On a TCP benchmark using socklib on the loopback interface on which checksum
offload and scatter/gather have been deactivated, we get about 20% performance
increase.
v2 is just a new issue with format-patch -M -C, other changes.
Christophe Leroy (2):
powerpc32: checksum_wrappers_64 becomes checksum_wrappers
powerpc32: rewrite of csum_partial_copy_generic based of copy_tofrom_user
arch/powerpc/include/asm/checksum.h | 9 -
arch/powerpc/lib/Makefile | 3 +-
arch/powerpc/lib/checksum_32.S | 320 ++++++++++++++-------
...{checksum_wrappers_64.c => checksum_wrappers.c} | 0
4 files changed, 210 insertions(+), 122 deletions(-)
rename arch/powerpc/lib/{checksum_wrappers_64.c => checksum_wrappers.c} (100%)
--
2.1.0
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