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authorEric Dumazet <dada1@cosmosbay.com>2007-12-25 05:57:56 +0100
committerDavid S. Miller <davem@davemloft.net>2008-01-29 00:00:05 +0100
commit21371f768bf7127ee45bfaadd17899df6a439e8f (patch)
tree91b5debf1d861a40c942a33f1286b70031a94305 /net/ethernet/eth.c
parent[XFRM]: Fix outbound statistics. (diff)
downloadlinux-21371f768bf7127ee45bfaadd17899df6a439e8f.tar.xz
linux-21371f768bf7127ee45bfaadd17899df6a439e8f.zip
[SOCK] Avoid divides in sk_stream_pages() and __sk_stream_mem_reclaim()
sk_forward_alloc being signed, we should take care of divides by SK_STREAM_MEM_QUANTUM we do in sk_stream_pages() and __sk_stream_mem_reclaim() This patchs introduces SK_STREAM_MEM_QUANTUM_SHIFT, defined as ilog2(SK_STREAM_MEM_QUANTUM), to be able to use right shifts instead of plain divides. This should help compiler to choose right shifts instead of expensive divides (as seen with CONFIG_CC_OPTIMIZE_FOR_SIZE=y on x86) Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ethernet/eth.c')
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