d/numam-dpdk
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

config: make AVX and AVX512 configurable

Browse Source 
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 <zhihong.wang@intel.com>
Reviewed-by: Zhiyong Yang <zhiyong.yang@intel.com>
Reviewed-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
This commit is contained in:
Zhihong Wang 2017-04-27 19:00:14 -04:00 committed by Thomas Monjalon
parent 852572d5db
commit 1838af3399
2 changed files with 14 additions and 0 deletions

8
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=""

6
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__),)