linux/drivers/virtio
Rusty Russell 13816c768d virtio_ring: virtqueue_add_sgs, to add multiple sgs.
virtio_scsi can really use this, to avoid the current hack of copying
the whole sg array.  Some other things get slightly neater, too.

This causes a slowdown in virtqueue_add_buf(), which is implemented as
a wrapper.  This is addressed in the next patches.

for i in `seq 50`; do /usr/bin/time -f 'Wall time:%e' ./vringh_test --indirect --eventidx --parallel --fast-vringh; done 2>&1 | stats --trim-outliers:

Before:
	Using CPUS 0 and 3
	Guest: notified 0, pinged 39009-39063(39062)
	Host: notified 39009-39063(39062), pinged 0
	Wall time:1.700000-1.950000(1.723542)

After:
	Using CPUS 0 and 3
	Guest: notified 0, pinged 39062-39063(39063)
	Host: notified 39062-39063(39063), pinged 0
	Wall time:1.760000-2.220000(1.789167)

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Reviewed-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>
Reviewed-by: Asias He <asias@redhat.com>
2013-03-20 15:43:29 +10:30
..
config.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
Kconfig drivers/virtio: remove depends on CONFIG_EXPERIMENTAL 2013-01-11 11:39:04 -08:00
Makefile virtio: remove CONFIG_VIRTIO_RING 2012-09-28 15:05:15 +09:30
virtio_balloon.c virtio: use module_virtio_driver. 2013-02-13 17:00:37 +10:30
virtio_mmio.c virtio: make config_ops const 2013-02-11 15:32:17 +10:30
virtio_pci.c virtio: make pci_device_id const 2013-02-11 15:32:18 +10:30
virtio_ring.c virtio_ring: virtqueue_add_sgs, to add multiple sgs. 2013-03-20 15:43:29 +10:30
virtio.c Some nice cleanups, and even a patch my wife did as a "live" demo for 2012-12-20 08:37:05 -08:00