]> git.baikalelectronics.ru Git - kernel.git/commit
projects / kernel.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: a046572) | patch
nfp: bpf: optimize comparisons to negative constants
authorJakub Kicinski <jakub.kicinski@netronome.com>
Wed, 25 Apr 2018 04:22:39 +0000 (21:22 -0700)
committerDaniel Borkmann <daniel@iogearbox.net>
Wed, 25 Apr 2018 07:56:10 +0000 (09:56 +0200)
commit6d3c81b725dfb66e59a4219deb39f55e2bd713c6
tree16281ac7de8247d60c728a93b7db5bc92a1e74catree | snapshot
parenta046572b0b7cc37ae12a2daa96fc96b05657adb3commit | diff
nfp: bpf: optimize comparisons to negative constants

Comparison instruction requires a subtraction.  If the constant
is negative we are more likely to fit it into a NFP instruction
directly if we change the sign and use addition.

Signed-off-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
drivers/net/ethernet/netronome/nfp/bpf/main.h diff | blob | history
Linux Kernel Source Tree.