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arm64: csum: Optimise IPv6 header checksum
authorRobin Murphy <robin.murphy@arm.com>
Mon, 20 Jan 2020 18:52:29 +0000 (18:52 +0000)
committerCatalin Marinas <catalin.marinas@arm.com>
Mon, 9 Mar 2020 18:08:25 +0000 (18:08 +0000)
commite9c7ddbf8b4b6a291bf3b5bfa7c883235164d9be
treeaa52e43a553143c92273950d372f427607c06c2ctree | snapshot
parent27afb236fe5adaa3911e47c91057ba783549226fcommit | diff
arm64: csum: Optimise IPv6 header checksum

Throwing our __uint128_t idioms at csum_ipv6_magic() makes it
about 1.3x-2x faster across a range of microarchitecture/compiler
combinations. Not much in absolute terms, but every little helps.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
arch/arm64/include/asm/checksum.h diff | blob | blame | history
arch/arm64/lib/csum.c diff | blob | blame | history
Mirror https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git