a9dd7275a1
When the virtio guest driver doesn't work with poll mode, the driver creates event mechanism in order to schedule completion notifications for each virtq burst traffic. When traffic comes to a virtq, a CQE will be added to the virtq CQ by the FW. The driver requests interrupt for the next CQE index, and when interrupt is triggered, the driver polls the CQ and notifies the guest by virtq callfd writing. According to the described method, the interrupts will be triggered for each burst of traffic. The burst size depends on interrupt latency. Interrupts management takes a lot of CPU cycles and using it for each traffic burst takes big portion of CPU capacity. When traffic is on, using timer for CQ poll scheduling instead of interrupts saves a lot of CPU cycles. Move CQ poll scheduling to be done by timer in case of running traffic. Request interrupts only when traffic is off. The timer scheduling management is done by a new dedicated thread uses a usleep command. Signed-off-by: Matan Azrad <matan@mellanox.com> Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
59 lines
1.6 KiB
Makefile
59 lines
1.6 KiB
Makefile
# SPDX-License-Identifier: BSD-3-Clause
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# Copyright 2019 Mellanox Technologies, Ltd
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include $(RTE_SDK)/mk/rte.vars.mk
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# Library name.
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LIB = librte_pmd_mlx5_vdpa.a
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# Sources.
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SRCS-$(CONFIG_RTE_LIBRTE_MLX5_VDPA_PMD) += mlx5_vdpa.c
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SRCS-$(CONFIG_RTE_LIBRTE_MLX5_VDPA_PMD) += mlx5_vdpa_mem.c
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SRCS-$(CONFIG_RTE_LIBRTE_MLX5_VDPA_PMD) += mlx5_vdpa_event.c
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SRCS-$(CONFIG_RTE_LIBRTE_MLX5_VDPA_PMD) += mlx5_vdpa_virtq.c
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SRCS-$(CONFIG_RTE_LIBRTE_MLX5_VDPA_PMD) += mlx5_vdpa_steer.c
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SRCS-$(CONFIG_RTE_LIBRTE_MLX5_VDPA_PMD) += mlx5_vdpa_lm.c
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# Basic CFLAGS.
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CFLAGS += -O3
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CFLAGS += -std=c11 -Wall -Wextra
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CFLAGS += -g
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CFLAGS += -I$(RTE_SDK)/drivers/common/mlx5
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CFLAGS += -I$(RTE_SDK)/drivers/common/mlx5/linux
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CFLAGS += -I$(RTE_SDK)/drivers/net/mlx5_vdpa
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CFLAGS += -I$(RTE_SDK)/lib/librte_sched
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CFLAGS += -I$(BUILDDIR)/drivers/common/mlx5
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CFLAGS += -D_BSD_SOURCE
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CFLAGS += -D_DEFAULT_SOURCE
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CFLAGS += -D_XOPEN_SOURCE=600
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CFLAGS += $(WERROR_FLAGS)
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CFLAGS += -Wno-strict-prototypes
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LDLIBS += -lrte_common_mlx5
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LDLIBS += -lrte_eal -lrte_vhost -lrte_kvargs -lrte_pci -lrte_bus_pci -lrte_sched
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LDLIBS += -pthread
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# A few warnings cannot be avoided in external headers.
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CFLAGS += -Wno-error=cast-qual
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EXPORT_MAP := rte_pmd_mlx5_vdpa_version.map
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# DEBUG which is usually provided on the command-line may enable
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# CONFIG_RTE_LIBRTE_MLX5_DEBUG.
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ifeq ($(DEBUG),1)
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CONFIG_RTE_LIBRTE_MLX5_DEBUG := y
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endif
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# User-defined CFLAGS.
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ifeq ($(CONFIG_RTE_LIBRTE_MLX5_DEBUG),y)
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CFLAGS += -pedantic
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ifneq ($(CONFIG_RTE_TOOLCHAIN_ICC),y)
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CFLAGS += -DPEDANTIC
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endif
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AUTO_CONFIG_CFLAGS += -Wno-pedantic
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else
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CFLAGS += -UPEDANTIC
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endif
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include $(RTE_SDK)/mk/rte.lib.mk
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