linux-kernel - [PATCH v2 8/8] tools/virtio: Use tools/include/list.h instead of stubs

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Message-Id: <20200416075643.27330-9-eperezma@redhat.com>
Date:   Thu, 16 Apr 2020 09:56:43 +0200
From:   Eugenio Pérez <eperezma@...hat.com>
To:     "Michael S. Tsirkin" <mst@...hat.com>
Cc:     Stephen Rothwell <sfr@...b.auug.org.au>,
        "virtualization@...ts.linux-foundation.org" 
        <virtualization@...ts.linux-foundation.org>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        Eugenio Pérez <eperezma@...hat.com>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        kvm list <kvm@...r.kernel.org>,
        Cornelia Huck <cohuck@...hat.com>,
        Halil Pasic <pasic@...ux.ibm.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH v2 8/8] tools/virtio: Use tools/include/list.h instead of stubs

It should not make any significant difference but reduce stub code.

Signed-off-by: Eugenio Pérez <eperezma@...hat.com>
---
 tools/virtio/linux/kernel.h | 7 +------
 tools/virtio/linux/virtio.h | 5 ++---
 tools/virtio/virtio_test.c  | 1 +
 tools/virtio/vringh_test.c  | 2 ++
 4 files changed, 6 insertions(+), 9 deletions(-)

diff --git a/tools/virtio/linux/kernel.h b/tools/virtio/linux/kernel.h
index 6683b4a70b05..caab980211a6 100644
--- a/tools/virtio/linux/kernel.h
+++ b/tools/virtio/linux/kernel.h
@@ -11,6 +11,7 @@
 
 #include <linux/compiler.h>
 #include <linux/types.h>
+#include <linux/list.h>
 #include <linux/printk.h>
 #include <linux/bug.h>
 #include <errno.h>
@@ -135,10 +136,4 @@ static inline void free_page(unsigned long addr)
 	(void) (&_min1 == &_min2);		\
 	_min1 < _min2 ? _min1 : _min2; })
 
-/* TODO: empty stubs for now. Broken but enough for virtio_ring.c */
-#define list_add_tail(a, b) do {} while (0)
-#define list_del(a) do {} while (0)
-#define list_for_each_entry(a, b, c) while (0)
-/* end of stubs */
-
 #endif /* KERNEL_H */
diff --git a/tools/virtio/linux/virtio.h b/tools/virtio/linux/virtio.h
index b751350d4ce8..5d90254ddae4 100644
--- a/tools/virtio/linux/virtio.h
+++ b/tools/virtio/linux/virtio.h
@@ -11,12 +11,11 @@ struct device {
 struct virtio_device {
 	struct device dev;
 	u64 features;
+	struct list_head vqs;
 };
 
 struct virtqueue {
-	/* TODO: commented as list macros are empty stubs for now.
-	 * Broken but enough for virtio_ring.c
-	 * struct list_head list; */
+	struct list_head list;
 	void (*callback)(struct virtqueue *vq);
 	const char *name;
 	struct virtio_device *vdev;
diff --git a/tools/virtio/virtio_test.c b/tools/virtio/virtio_test.c
index dca64d36a882..c0b924b41a1d 100644
--- a/tools/virtio/virtio_test.c
+++ b/tools/virtio/virtio_test.c
@@ -129,6 +129,7 @@ static void vdev_info_init(struct vdev_info* dev, unsigned long long features)
 	int r;
 	memset(dev, 0, sizeof *dev);
 	dev->vdev.features = features;
+	INIT_LIST_HEAD(&dev->vdev.vqs);
 	dev->buf_size = 1024;
 	dev->buf = malloc(dev->buf_size);
 	assert(dev->buf);
diff --git a/tools/virtio/vringh_test.c b/tools/virtio/vringh_test.c
index 8ee2c9a6ad46..b88b0337fcfd 100644
--- a/tools/virtio/vringh_test.c
+++ b/tools/virtio/vringh_test.c
@@ -307,6 +307,7 @@ static int parallel_test(u64 features,
 		close(to_host[0]);
 
 		gvdev.vdev.features = features;
+		INIT_LIST_HEAD(&gvdev.vdev.vqs);
 		gvdev.to_host_fd = to_host[1];
 		gvdev.notifies = 0;
 
@@ -453,6 +454,7 @@ int main(int argc, char *argv[])
 
 	getrange = getrange_iov;
 	vdev.features = 0;
+	INIT_LIST_HEAD(&vdev.vqs);
 
 	while (argv[1]) {
 		if (strcmp(argv[1], "--indirect") == 0)
-- 
2.18.1