lkml.org 
[lkml]   [2015]   [Jun]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH 0/2] powerpc32: optimisation of csum_partial_copy_generic()
Date
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

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2015-06-22 19:21    [W:0.037 / U:23.288 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site