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linux-next/arch/powerpc/include
Christophe Leroy 7e393220b6 powerpc: optimise csum_partial() call when len is constant
csum_partial is often called for small fixed length packets
for which it is suboptimal to use the generic csum_partial()
function.

For instance, in my configuration, I got:
* One place calling it with constant len 4
* Seven places calling it with constant len 8
* Three places calling it with constant len 14
* One place calling it with constant len 20
* One place calling it with constant len 24
* One place calling it with constant len 32

This patch renames csum_partial() to __csum_partial() and
implements csum_partial() as a wrapper inline function which
* uses csum_add() for small 16bits multiple constant length
* uses ip_fast_csum() for other 32bits multiple constant
* uses __csum_partial() in all other cases

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Scott Wood <oss@buserror.net>
2016-03-09 10:44:18 -06:00
..
asm powerpc: optimise csum_partial() call when len is constant 2016-03-09 10:44:18 -06:00
uapi/asm powerpc: Fix misspellings in comments. 2016-03-01 19:27:20 +11:00