[dpdk-dev] [PATCH v3 4/4] eal/arm: introduce CONFIG_RTE_ARCH_ARM_NEON_MEMCPY

[Jianbo Liu]

On 20 March 2016 at 03:58, Jan Viktorin <viktorin at rehivetech.com> wrote:
> The flag is used to enable memcpy optimizations in EAL. As it is not always
> the performance benefit, the flag allows to disable it.
>
> Signed-off-by: Jan Viktorin <viktorin at rehivetech.com>
> ---
>  config/defconfig_arm-armv7a-linuxapp-gcc               | 1 +
>  lib/librte_eal/common/include/arch/arm/rte_memcpy_32.h | 8 ++++++--
>  2 files changed, 7 insertions(+), 2 deletions(-)
>
> diff --git a/config/defconfig_arm-armv7a-linuxapp-gcc b/config/defconfig_arm-armv7a-linuxapp-gcc
> index 96c3343..2c60c2c 100644
> --- a/config/defconfig_arm-armv7a-linuxapp-gcc
> +++ b/config/defconfig_arm-armv7a-linuxapp-gcc
> @@ -36,6 +36,7 @@ CONFIG_RTE_ARCH="arm"
>  CONFIG_RTE_ARCH_ARM=y
>  CONFIG_RTE_ARCH_ARMv7=y
>  CONFIG_RTE_ARCH_ARM_TUNE="cortex-a9"
> +CONFIG_RTE_ARCH_ARM_NEON_MEMCPY=y
>
If it's not always benefit, why not disable here since it is common
armv7a config, and enable in your or other user's own config file?

Thanks!
Jianbo