[PATCH net-next 0/4] ixgbe: enable Relaxed Order for ARM64
Jeff Kirsher
jeffrey.t.kirsher at intel.com
Sat Apr 1 01:39:22 PDT 2017
On Sat, 2017-04-01 at 15:25 +0800, Ding Tianhong wrote:
> The IXGBE_ALLOW_RELAXED_ORDER will enable Relaxed Ordering (RO) which
> allows
> transactions that do not have any order of completion requirements to
> complete more efficiently compare to the Stricted Ordering (SO) for
> ixbge
> nic card. Some architecture will see high write-to-memory performance
> when RO is
> enabled on the data transactions just like the SPARC did.
>
> The aarch64 could both support Relaxed Ordering (RO) and Stricted
> Ordering (SO),
> so enable this config could get much more better performance, didn't
> see any
> adverse effects.
>
> The ARCH_WANT_RELAX_ORDER looks more general and would cause
> misleading and
> ambiguous, and till now only ixgbe could enable this "flag", so
> rename this
> config more specific.
>
> After discussion with the architecture maintainer, enable this config
> in driver
> looks more appropriate to compatible several architecture just like
> SPARC and ARM64,
> maybe we need more discussion about this, so let's begin by this
> patch set.
>
> In the last patch 1a8b6d76(net:add one common config ...), Mao only
> fix the
> config name issue for 82599 pf, but the 82598 and 82599 vf still need
> to be fixed,
> so rename the config all in the drivers to instead of CONFIG_SPARC.
Thank you for at least CC'ing me, but please remember to also CC intel-
wired-lan at lists.osuosl.org mailing list. It make it easier for me to
add your patches to my queue and makes it visible for the
developers/validation people who will be reviewing and testing your
changes.
>
> Ding Tianhong (4):
> ixgbe: sparc: rename the ARCH_WANT_RELAX_ORDER to
> IXGBE_ALLOW_RELAXED_ORDER
> ixgbe: ixgbevf: Clear the CONFIG_SPARC for ixgbevf and 82598
> ixgbe: move IXGBE_ALLOW_RELAXED_ORDER from architecture to driver
> ixgbe: enable IXGBE_ALLOW_RELAXED_ORDER for ARM64
>
> arch/Kconfig | 3 ---
> arch/sparc/Kconfig | 1 -
> drivers/net/ethernet/intel/Kconfig | 4 ++++
> drivers/net/ethernet/intel/ixgbe/ixgbe_82598.c | 4 ++--
> drivers/net/ethernet/intel/ixgbe/ixgbe_common.c | 2 +-
> drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 2 +-
> 6 files changed, 8 insertions(+), 8 deletions(-)
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