AI代码解释 -blockdev node-name=drive_src1,driver=virtio-blk-vhost-vdpa,path=/dev/vhost-vdpa-0,cache.direct=on \-device virtio-blk-pci,id=src1,bootindex=2,drive=drive_src1 \ 无论如何,为了充分利用 vDPA 硬件设备的性能,我们始终可以使用QEMU 提供的通用设备vhost-vdpa-device-pci,该设备支持任何...
The virtio-blk device has supported multi-queue for quite a while. It is used to improve performance during heavy I/O, by processing the queues in parallel. However, beforeQEMU 9.0, all the virtqueues were processed by a single IOThread or the main loop. This single thread can be a CPU...
.map_queues = virtblk_map_queues, }; 复制代码 根据virtio_mq_ops 的定义,我们现在要调用 virtio_queue_rq。 static blk_status_t virtio_queue_rq(struct blk_mq_hw_ctx *hctx, const struct blk_mq_queue_data *bd) { struct virtio_blk *vblk = hctx->queue->queuedata; struct request *req ...
无论如何,为了充分利用 vDPA 硬件设备的性能,我们始终可以使用QEMU 提供的通用设备vhost-vdpa-device-pci,该设备支持任何 vDPA 设备并将其直接公开给客户机。当然,QEMU 无法在这种情况下拦截请求,因此其块层提供的一些功能(例如实时迁移、磁盘格式等)不受支持。从 QEMU 8.0 开始,您可以使用以下选项将通用 vDPA 设备...
[nvme] nvme_pci_complete_rq+0x30/0x40 [nvme] blk_mq_complete_request+0x6c/0x100 nvme_irq+0xfc/0x240 [nvme] __handle_irq_event_percpu+0x40/0x180 handle_irq_event_percpu+0x30/0x80 handle_irq_event+0x36/0x53 handle_edge_irq+0x82/0x190 handle_irq+0xbf/0x100 do_IRQ+0x49/0xe0...
blk_mq_freeze_queue_wait_timeout blk_mq_init_queue blk_mq_init_sq_queue blk_mq_map_queues blk_mq_pci_map_queues blk_mq_quiesce_queue blk_mq_request_completed blk_mq_requeue_request blk_mq_rq_cpu blk_mq_run_hw_queues blk_mq_start_request blk_mq_start_stopped_hw_que...
1715173329force-pushedthemaster-mediatek-rax3000mbranch from9e4bcafto8dd3dceCompareApril 12, 2024 08:53 Upgrading from initramfs on first flash is broken after applying this PR: When flashing from vendor firmware, we first wrote bl2 and u-boot to the flash, reboot and wait for it to load...
(&hctx->tags->active_queues); if (!users) return true; /* * Allow at least some tags */ depth = max((bt->sb.depth + users - 1) / users, 4U); return atomic_read(&hctx->nr_active) < depth; } static int __bt_get(struct blk_mq_hw_ctx *hc...
static void virtblk_map_queues(struct blk_mq_tag_set *set) { struct virtio_blk *vblk = set->driver_data; int i, qoff; for (i = 0, qoff = 0; i < set->nr_maps; i++) { struct blk_mq_queue_map *map = &set->map[i]; map->nr_queues = vblk->io_queues[i...