linux-stable.git/tools/virtio/linux/virtio.h, branch linux-4.3.y

tools/virtio: more stubs

2014-12-15T21:49:19+00:00

As usual, add more stubs to fix test build after main
codebase changes.

Signed-off-by: Michael S. Tsirkin

virtio: add support for 64 bit features.

2014-12-09T10:05:24+00:00

Change u32 to u64, and use BIT_ULL and 1ULL everywhere.

Note: transports are unchanged, and only set low 32 bit.
This guarantees that no transport sets e.g. VERSION_1
by mistake without proper support.

Based on patch by Rusty.

Signed-off-by: Rusty Russell 
Signed-off-by: Cornelia Huck 
Signed-off-by: Michael S. Tsirkin 
Reviewed-by: David Hildenbrand 
Reviewed-by: Cornelia Huck

virtio: use u32, not bitmap for features

2014-12-09T10:05:23+00:00

It seemed like a good idea to use bitmap for features
in struct virtio_device, but it's actually a pain,
and seems to become even more painful when we get more
than 32 feature bits.  Just change it to a u32 for now.

Based on patch by Rusty.

Suggested-by: David Hildenbrand 
Signed-off-by: Rusty Russell 
Signed-off-by: Cornelia Huck 
Signed-off-by: Michael S. Tsirkin 
Reviewed-by: Cornelia Huck

tools/virtio: update internal copies of headers

2014-03-13T00:53:25+00:00

The virtio headers have changed recently:

 5b1bf7cb673 virtio_ring: let virtqueue_{kick()/notify()} return a bool
 46f9c2b925a virtio_ring: change host notification API

Update the internal copies to fix the build of virtio_test:

  cc -g -O2 -Wall -I. -I ../../usr/include/ -Wno-pointer-sign
    -fno-strict-overflow -fno-strict-aliasing -fno-common -MMD -U_FORTIFY_SOURCE
    -c -o virtio_test.o virtio_test.c
  In file included from virtio_test.c:15:0:
  ./linux/virtio.h:76:19: error: conflicting types for ‘vring_new_virtqueue’
   struct virtqueue *vring_new_virtqueue(unsigned int index,
                     ^
  In file included from ./linux/virtio_ring.h:1:0,
                   from ../../usr/include/linux/vhost.h:17,
                   from virtio_test.c:14:
  ./linux/../../../include/linux/virtio_ring.h:68:19: note: previous
  declaration of ‘vring_new_virtqueue’ was here
   struct virtqueue *vring_new_virtqueue(unsigned int index,
  virtio_test.c: In function ‘vq_info_add’:
  virtio_test.c:103:12: warning: passing argument 7 of ‘vring_new_virtqueue’
  from incompatible pointer type [enabled by default]
              vq_notify, vq_callback, "test");
              ^
  In file included from virtio_test.c:15:0:
  ./linux/virtio.h:76:19: note: expected ‘void (*)(struct virtqueue *)’ but
  argument is of type ‘_Bool (*)(struct virtqueue *)’
   struct virtqueue *vring_new_virtqueue(unsigned int index,
                     ^

Signed-off-by: Joel Stanley 
Signed-off-by: Rusty Russell

tools/virtio: move module license stub to module.h

2013-07-09T01:17:53+00:00

This fixes build for the vringh test:
[linux]$ make -C tools/virtio/
make: Entering directory `/home/mst/scm/linux/tools/virtio'
cc -g -O2 -Wall -I. -I ../../usr/include/ -Wno-pointer-sign
-fno-strict-overflow -fno-strict-aliasing -fno-common -MMD
-U_FORTIFY_SOURCE   -c -o vringh.o ../../drivers/vhost/vringh.c
../../drivers/vhost/vringh.c:1010:16: error: expected declaration
specifiers or ‘...’ before string constant

Signed-off-by: Michael S. Tsirkin 
Signed-off-by: Rusty Russell

tools/virtio: remove virtqueue_add_buf() from tests.

2013-03-20T05:15:07+00:00

Make the rest of the paths use virtqueue_add_sgs or add_outbuf.

Signed-off-by: Rusty Russell

tools/virtio: make vringh_test use inbuf/outbuf.

2013-03-20T05:14:53+00:00

As expected, the simplified accessors are faster.

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 39062-39063(39063)
	Host: notified 39062-39063(39063), pinged 0
	Wall time:1.760000-2.220000(1.789167)

After:
	Using CPUS 0 and 3
	Guest: notified 0, pinged 39037-39063(39062)
	Host: notified 39037-39063(39062), pinged 0
	Wall time:1.640000-1.810000(1.676875)

Signed-off-by: Rusty Russell

virtio_ring: virtqueue_add_sgs, to add multiple sgs.

2013-03-20T05:13:29+00:00

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 
Reviewed-by: Wanlong Gao 
Reviewed-by: Asias He

tools/virtio: separate headers more.

2013-03-20T03:30:42+00:00

This makes them a bit more like the kernel headers, so we can include more
real kernel headers in our tests.

In addition this means that we don't break tools/virtio with the next
patch.

Signed-off-by: Rusty Russell

tools/virtio: fix build for 3.8

2013-03-20T03:30:41+00:00

Signed-off-by: Michael S. Tsirkin 
Signed-off-by: Rusty Russell