cf03a152c5
virtio-blk and virtio-scsi devices will need a way to specify the
mapping between IOThreads and virtqueues. At the moment all virtqueues
are assigned to a single IOThread or the main loop. This single thread
can be a CPU bottleneck, so it is necessary to allow finer-grained
assignment to spread the load.
Introduce DEFINE_PROP_IOTHREAD_VQ_MAPPING_LIST() so devices can take a
parameter that maps virtqueues to IOThreads. The command-line syntax for
this new property is as follows:
--device '{"driver":"foo","iothread-vq-mapping":[{"iothread":"iothread0","vqs":[0,1,2]},...]}'
IOThreads are specified by name and virtqueues are specified by 0-based
index.
It will be common to simply assign virtqueues round-robin across a set
of IOThreads. A convenient syntax that does not require specifying
individual virtqueue indices is available:
--device '{"driver":"foo","iothread-vq-mapping":[{"iothread":"iothread0"},{"iothread":"iothread1"},...]}'
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-ID: <20231220134755.814917-4-stefanha@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
91 lines
4.2 KiB
C
91 lines
4.2 KiB
C
#ifndef HW_QDEV_PROPERTIES_SYSTEM_H
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#define HW_QDEV_PROPERTIES_SYSTEM_H
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#include "hw/qdev-properties.h"
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extern const PropertyInfo qdev_prop_chr;
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extern const PropertyInfo qdev_prop_macaddr;
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extern const PropertyInfo qdev_prop_reserved_region;
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extern const PropertyInfo qdev_prop_multifd_compression;
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extern const PropertyInfo qdev_prop_mig_mode;
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extern const PropertyInfo qdev_prop_losttickpolicy;
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extern const PropertyInfo qdev_prop_blockdev_on_error;
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extern const PropertyInfo qdev_prop_bios_chs_trans;
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extern const PropertyInfo qdev_prop_fdc_drive_type;
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extern const PropertyInfo qdev_prop_drive;
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extern const PropertyInfo qdev_prop_drive_iothread;
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extern const PropertyInfo qdev_prop_netdev;
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extern const PropertyInfo qdev_prop_pci_devfn;
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extern const PropertyInfo qdev_prop_blocksize;
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extern const PropertyInfo qdev_prop_pci_host_devaddr;
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extern const PropertyInfo qdev_prop_uuid;
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extern const PropertyInfo qdev_prop_audiodev;
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extern const PropertyInfo qdev_prop_off_auto_pcibar;
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extern const PropertyInfo qdev_prop_pcie_link_speed;
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extern const PropertyInfo qdev_prop_pcie_link_width;
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extern const PropertyInfo qdev_prop_cpus390entitlement;
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extern const PropertyInfo qdev_prop_iothread_vq_mapping_list;
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#define DEFINE_PROP_PCI_DEVFN(_n, _s, _f, _d) \
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DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_pci_devfn, int32_t)
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#define DEFINE_PROP_CHR(_n, _s, _f) \
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DEFINE_PROP(_n, _s, _f, qdev_prop_chr, CharBackend)
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#define DEFINE_PROP_NETDEV(_n, _s, _f) \
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DEFINE_PROP(_n, _s, _f, qdev_prop_netdev, NICPeers)
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#define DEFINE_PROP_DRIVE(_n, _s, _f) \
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DEFINE_PROP(_n, _s, _f, qdev_prop_drive, BlockBackend *)
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#define DEFINE_PROP_DRIVE_IOTHREAD(_n, _s, _f) \
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DEFINE_PROP(_n, _s, _f, qdev_prop_drive_iothread, BlockBackend *)
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#define DEFINE_PROP_MACADDR(_n, _s, _f) \
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DEFINE_PROP(_n, _s, _f, qdev_prop_macaddr, MACAddr)
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#define DEFINE_PROP_RESERVED_REGION(_n, _s, _f) \
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DEFINE_PROP(_n, _s, _f, qdev_prop_reserved_region, ReservedRegion)
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#define DEFINE_PROP_MULTIFD_COMPRESSION(_n, _s, _f, _d) \
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DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_multifd_compression, \
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MultiFDCompression)
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#define DEFINE_PROP_MIG_MODE(_n, _s, _f, _d) \
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DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_mig_mode, \
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MigMode)
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#define DEFINE_PROP_LOSTTICKPOLICY(_n, _s, _f, _d) \
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DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_losttickpolicy, \
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LostTickPolicy)
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#define DEFINE_PROP_BLOCKDEV_ON_ERROR(_n, _s, _f, _d) \
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DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_blockdev_on_error, \
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BlockdevOnError)
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#define DEFINE_PROP_BIOS_CHS_TRANS(_n, _s, _f, _d) \
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DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_bios_chs_trans, int)
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#define DEFINE_PROP_BLOCKSIZE(_n, _s, _f) \
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DEFINE_PROP_UNSIGNED(_n, _s, _f, 0, qdev_prop_blocksize, uint32_t)
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#define DEFINE_PROP_PCI_HOST_DEVADDR(_n, _s, _f) \
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DEFINE_PROP(_n, _s, _f, qdev_prop_pci_host_devaddr, PCIHostDeviceAddress)
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#define DEFINE_PROP_OFF_AUTO_PCIBAR(_n, _s, _f, _d) \
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DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_off_auto_pcibar, \
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OffAutoPCIBAR)
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#define DEFINE_PROP_PCIE_LINK_SPEED(_n, _s, _f, _d) \
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DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_pcie_link_speed, \
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PCIExpLinkSpeed)
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#define DEFINE_PROP_PCIE_LINK_WIDTH(_n, _s, _f, _d) \
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DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_pcie_link_width, \
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PCIExpLinkWidth)
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#define DEFINE_PROP_UUID(_name, _state, _field) \
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DEFINE_PROP(_name, _state, _field, qdev_prop_uuid, QemuUUID, \
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.set_default = true)
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#define DEFINE_PROP_AUDIODEV(_n, _s, _f) \
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DEFINE_PROP(_n, _s, _f, qdev_prop_audiodev, QEMUSoundCard)
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#define DEFINE_PROP_UUID_NODEFAULT(_name, _state, _field) \
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DEFINE_PROP(_name, _state, _field, qdev_prop_uuid, QemuUUID)
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#define DEFINE_PROP_CPUS390ENTITLEMENT(_n, _s, _f, _d) \
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DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_cpus390entitlement, \
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CpuS390Entitlement)
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#define DEFINE_PROP_IOTHREAD_VQ_MAPPING_LIST(_name, _state, _field) \
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DEFINE_PROP(_name, _state, _field, qdev_prop_iothread_vq_mapping_list, \
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IOThreadVirtQueueMappingList *)
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#endif
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