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nfp: bpf: migrate to advanced reciprocal divide in reciprocal_div.h
authorJiong Wang <jiong.wang@netronome.com>
Fri, 6 Jul 2018 22:13:23 +0000 (15:13 -0700)
committerDaniel Borkmann <daniel@iogearbox.net>
Fri, 6 Jul 2018 23:45:31 +0000 (01:45 +0200)
commit9fb410a89e8fa92f8ebc7aa95563442a14da21eb
tree2e8fd0bfafbfffba139074dfbf7e8f0406caee31tree | snapshot
parent2a952b03d1a011e2e7ddc9ca59cbb21df7dc3525commit | diff
nfp: bpf: migrate to advanced reciprocal divide in reciprocal_div.h

As we are doing JIT, we would want to use the advanced version of the
reciprocal divide (reciprocal_value_adv) to trade performance with host.

We could reduce the required ALU instructions from 4 to 2 or 1.

Signed-off-by: Jiong Wang <jiong.wang@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
drivers/net/ethernet/netronome/nfp/bpf/jit.c diff | blob | history
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