On Fri, 7 Aug 2020 16:58:47 +0100 Ciara Power <ciara.po...@intel.com> wrote:
> A number of components in DPDK have optional AVX-512 or other vector > code paths which can be selected at runtime. Rather than having each > component provide its own mechanism to select a code path, this patchset > adds support for a single setting to control what code paths are used. > This can be used to enable some non-default code paths e.g. ones using > AVX-512, but also to limit the code paths to certain vector widths, or > to scalar code only, which is useful for testing. > > The max SIMD bitwidth setting can be set by the app itself through use of > the available API, or can be overriden by a commandline argument passed by > the user. > > Ciara Power (12): > eal: add max SIMD bitwidth > eal: add default SIMD bitwidth values > net/i40e: add checks for max SIMD bitwidth > net/axgbe: add checks for max SIMD bitwidth > net/bnxt: add checks for max SIMD bitwidth > net/enic: add checks for max SIMD bitwidth > net/fm10k: add checks for max SIMD bitwidth > net/iavf: add checks for max SIMD bitwidth > net/ice: add checks for max SIMD bitwidth > net/ixgbe: add checks for max SIMD bitwidth > net/mlx5: add checks for max SIMD bitwidth > net/virtio: add checks for max SIMD bitwidth > > drivers/net/axgbe/axgbe_rxtx.c | 3 +- > drivers/net/bnxt/bnxt_ethdev.c | 6 ++- > drivers/net/enic/enic_rxtx_vec_avx2.c | 3 +- > drivers/net/fm10k/fm10k_ethdev.c | 11 ++-- > drivers/net/i40e/i40e_rxtx.c | 19 ++++--- > drivers/net/iavf/iavf_rxtx.c | 16 +++--- > drivers/net/ice/ice_rxtx.c | 20 ++++--- > drivers/net/ixgbe/ixgbe_rxtx.c | 7 ++- > drivers/net/mlx5/mlx5_ethdev.c | 3 +- > drivers/net/virtio/virtio_ethdev.c | 12 +++-- > lib/librte_eal/arm/include/rte_vect.h | 2 + > lib/librte_eal/common/eal_common_options.c | 63 ++++++++++++++++++++++ > lib/librte_eal/common/eal_internal_cfg.h | 8 +++ > lib/librte_eal/common/eal_options.h | 2 + > lib/librte_eal/include/generic/rte_vect.h | 2 + > lib/librte_eal/include/rte_eal.h | 31 +++++++++++ > lib/librte_eal/ppc/include/rte_vect.h | 2 + > lib/librte_eal/rte_eal_version.map | 4 ++ > lib/librte_eal/x86/include/rte_vect.h | 2 + > 19 files changed, 184 insertions(+), 32 deletions(-) > This looks useful, could you add some documentation on rationale and how you expect application to set it.
