linux.git/tools/virtio, branch v4.8-rc2

ptr_ring: support resizing multiple queues

2016-07-01T09:32:17+00:00

Sometimes, we need support resizing multiple queues at once. This is
because it was not easy to recover to recover from a partial failure
of multiple queues resizing.

Signed-off-by: Michael S. Tsirkin 
Signed-off-by: Jason Wang 
Signed-off-by: David S. Miller

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2016-06-30T09:03:36+00:00

Several cases of overlapping changes, except the packet scheduler
conflicts which deal with the addition of the free list parameter
to qdisc_enqueue().

Signed-off-by: David S. Miller

ptr_ring: ring test

2016-06-15T20:58:27+00:00

Add ringtest based unit test for ptr ring.

Signed-off-by: Michael S. Tsirkin 
Signed-off-by: David S. Miller

tools/virtio: add noring tool

2016-06-06T10:00:11+00:00

Useful to measure testing framework overhead.

Signed-off-by: Michael S. Tsirkin

tools/virtio/ringtest: fix run-on-all.sh to work without /dev/cpu

2016-06-06T10:00:11+00:00

/dev/cpu is only available on x86 with certain modules (e.g. msr) enabled.
Using lscpu to get processors count is more portable.

Signed-off-by: Mike Rapoport 
Signed-off-by: Michael S. Tsirkin

tools/virtio/ringtest: add usage example to README

2016-06-06T10:00:11+00:00

Having typical usage example in the README file is more convinient than in
the git history...

Signed-off-by: Mike Rapoport 
Signed-off-by: Michael S. Tsirkin

ringtest: pass buf != NULL

2016-05-22T16:44:14+00:00

just a stub pointer for now.

Signed-off-by: Michael S. Tsirkin

virtio: add inorder option

2016-05-22T16:44:12+00:00

skips ring accesses but drops out of order support

Signed-off-by: Michael S. Tsirkin

virtio_ring: Support DMA APIs

2016-03-02T15:01:57+00:00

virtio_ring currently sends the device (usually a hypervisor)
physical addresses of its I/O buffers.  This is okay when DMA
addresses and physical addresses are the same thing, but this isn't
always the case.  For example, this never works on Xen guests, and
it is likely to fail if a physical "virtio" device ever ends up
behind an IOMMU or swiotlb.

The immediate use case for me is to enable virtio on Xen guests.
For that to work, we need vring to support DMA address translation
as well as a corresponding change to virtio_pci or to another
driver.

Signed-off-by: Andy Lutomirski 
Signed-off-by: Michael S. Tsirkin

tools/virtio: add ringtest utilities

2016-01-26T08:18:30+00:00

This adds micro-benchmarks useful for tuning virtio ring layouts.
Three layouts are currently implemented:

- virtio 0.9 compatible one
- an experimental extension bypassing the ring index, polling ring
  itself instead
- an experimental extension bypassing avail and used ring completely

Typical use:

sh run-on-all.sh perf stat -r 10 --log-fd 1 -- ./ring

It doesn't depend on the kernel directly, but it's handy
to have as much virtio stuff as possible in one tree.

Signed-off-by: Michael S. Tsirkin