[PATCH 0/2] powerpc32: optimisation of csum_partial_copy_generic()

[Christophe Leroy]

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.


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 +++++++++++++++++++++-----------
 arch/powerpc/lib/checksum_wrappers.c    | 102 ++++++++++
 arch/powerpc/lib/checksum_wrappers_64.c | 102 ----------
 5 files changed, 312 insertions(+), 224 deletions(-)
 create mode 100644 arch/powerpc/lib/checksum_wrappers.c
 delete mode 100644 arch/powerpc/lib/checksum_wrappers_64.c

-- 
2.1.0

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