From: Zhihong Wang Date: Thu, 27 Apr 2017 23:00:14 +0000 (-0400) Subject: config: make AVX and AVX512 configurable X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=1838af33997daa7a2093e3aa7bf95a2d0c9578bf;p=dpdk.git config: make AVX and AVX512 configurable Making AVX and AVX512 configurable is useful for performance and power testing. The similar kernel patch at https://patchwork.kernel.org/patch/9618883/. AVX512 support like in rte_memcpy has been in DPDK since 16.04, but it's still unproven in rich use cases in hardware. Therefore it's marked as experimental for now, will enable it after enough field test and possible optimization. Signed-off-by: Zhihong Wang Reviewed-by: Zhiyong Yang Reviewed-by: Yuanhan Liu --- diff --git a/config/common_base b/config/common_base index 0b4297c592..93e923507d 100644 --- a/config/common_base +++ b/config/common_base @@ -103,6 +103,14 @@ CONFIG_RTE_EAL_IGB_UIO=n CONFIG_RTE_EAL_VFIO=n CONFIG_RTE_MALLOC_DEBUG=n +# +# Recognize/ignore the AVX/AVX512 CPU flags for performance/power testing. +# AVX512 is marked as experimental for now, will enable it after enough +# field test and possible optimization. +# +CONFIG_RTE_ENABLE_AVX=y +CONFIG_RTE_ENABLE_AVX512=n + # Default driver path (or "" to disable) CONFIG_RTE_EAL_PMD_PATH="" diff --git a/mk/rte.cpuflags.mk b/mk/rte.cpuflags.mk index e634abc38c..4288c1470b 100644 --- a/mk/rte.cpuflags.mk +++ b/mk/rte.cpuflags.mk @@ -70,8 +70,10 @@ CPUFLAGS += PCLMULQDQ endif ifneq ($(filter $(AUTO_CPUFLAGS),__AVX__),) +ifeq ($(CONFIG_RTE_ENABLE_AVX),y) CPUFLAGS += AVX endif +endif ifneq ($(filter $(AUTO_CPUFLAGS),__RDRND__),) CPUFLAGS += RDRAND @@ -86,12 +88,16 @@ CPUFLAGS += F16C endif ifneq ($(filter $(AUTO_CPUFLAGS),__AVX2__),) +ifeq ($(CONFIG_RTE_ENABLE_AVX),y) CPUFLAGS += AVX2 endif +endif ifneq ($(filter $(AUTO_CPUFLAGS),__AVX512F__),) +ifeq ($(CONFIG_RTE_ENABLE_AVX512),y) CPUFLAGS += AVX512F endif +endif # IBM Power CPU flags ifneq ($(filter $(AUTO_CPUFLAGS),__PPC64__),)