kernel.git/tools/virtio/ringtest/ring.c, branch linux-4.13.yHosts the 0x221E linux distro kernel.
https://git.0xinfinity.dev/distro/kernel.git/atom?h=linux-4.13.y2016-10-30T22:21:43Zringtest: commonize implementation of poll_avail/poll_used2016-10-30T22:21:43ZPaolo Bonzini2016-10-06T09:39:11Zurn:sha1:d3c3589b8b3cd4fabf4cd137facb42a7fb36bd7f
Provide new primitives used_empty/avail_empty and
build poll_avail/poll_used on top of it.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
tools/virtio: add ringtest utilities2016-01-26T08:18:30ZMichael S. Tsirkin2016-01-21T12:44:10Zurn:sha1:481eaec37e91e2b33f17275901172f50ce2c71e8
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 <mst@redhat.com>