> -----Original Message----- > From: netdev-ow...@vger.kernel.org [mailto:netdev-ow...@vger.kernel.org] > On Behalf Of Mao Wenan > Sent: Monday, January 09, 2017 1:33 PM > To: netdev@vger.kernel.org; jeffrey.t.kirs...@intel.com; > alexander.du...@gmail.com > Subject: [PATCH v2 net-next] net:add one common config > ARCH_WANT_RELAX_ORDER to support relax ordering. > > Relax ordering(RO) is one feature of 82599 NIC, to enable this feature can > enhance the performance for some cpu architecure, such as SPARC and so on. > Currently it only supports one special cpu architecture(SPARC) in 82599 driver > to enable RO feature, this is not very common for other cpu architecture which > really needs RO feature. > This patch add one common config CONFIG_ARCH_WANT_RELAX_ORDER to > set RO feature, and should define CONFIG_ARCH_WANT_RELAX_ORDER in > sparc Kconfig firstly. > > Signed-off-by: Mao Wenan <maowe...@huawei.com> > --- > arch/Kconfig | 3 +++ > arch/sparc/Kconfig | 1 + > drivers/net/ethernet/intel/ixgbe/ixgbe_common.c | 2 +- > 3 files changed, 5 insertions(+), 1 deletion(-) > > diff --git a/arch/Kconfig b/arch/Kconfig index 99839c2..bd04eac 100644 > --- a/arch/Kconfig > +++ b/arch/Kconfig > @@ -781,4 +781,7 @@ config VMAP_STACK > the stack to map directly to the KASAN shadow map using a formula > that is incorrect if the stack is in vmalloc space. > > +config ARCH_WANT_RELAX_ORDER > + bool > + > source "kernel/gcov/Kconfig" > diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index cf4034c..68ac5c7 > 100644 > --- a/arch/sparc/Kconfig > +++ b/arch/sparc/Kconfig > @@ -44,6 +44,7 @@ config SPARC > select CPU_NO_EFFICIENT_FFS > select HAVE_ARCH_HARDENED_USERCOPY > select PROVE_LOCKING_SMALL if PROVE_LOCKING > + select ARCH_WANT_RELAX_ORDER > > config SPARC32 > def_bool !64BIT > diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c > b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c > index 094e1d6..c38d50c 100644 > --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c > +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c > @@ -350,7 +350,7 @@ s32 ixgbe_start_hw_gen2(struct ixgbe_hw *hw) > } > IXGBE_WRITE_FLUSH(hw); > > -#ifndef CONFIG_SPARC > +#ifndef CONFIG_ARCH_WANT_RELAX_ORDER > /* Disable relaxed ordering */ > for (i = 0; i < hw->mac.max_tx_queues; i++) { > u32 regval; > -- > 2.7.0 >
Hi Alex, Is there any improvement for this patch? @Jeff, do you have any comments about this patch?
