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vfio/mdev: consolidate all the available_instance sysfs into the core code

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Every driver just print a number, simply add a method to the mdev_driver
to return it and provide a standard sysfs show function.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Kirti Wankhede <kwankhede@nvidia.com>
Reviewed-by: Eric Farman <farman@linux.ibm.com>
Link: https://lore.kernel.org/r/20220923092652.100656-13-hch@lst.de
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Christoph Hellwig
2022-09-23 11:26:50 +02:00
committed by Alex Williamson
parent 0bc79069cc
commit f2fbc72e6d
11 changed files with 55 additions and 102 deletions
Download Patch File Download Diff File Expand all files Collapse all files
samples/vfio-mdev/mbochs.c
+3 -7
View File
@@ -1361,21 +1361,16 @@ static ssize_t description_show(struct mdev_type *mtype,
}
static MDEV_TYPE_ATTR_RO(description);
static ssize_t available_instances_show(struct mdev_type *mtype,
struct mdev_type_attribute *attr,
char *buf)
static unsigned int mbochs_get_available(struct mdev_type *mtype)
{
struct mbochs_type *type =
container_of(mtype, struct mbochs_type, type);
int count = atomic_read(&mbochs_avail_mbytes) / type->mbytes;
return sprintf(buf, "%d\n", count);
return atomic_read(&mbochs_avail_mbytes) / type->mbytes;
}
static MDEV_TYPE_ATTR_RO(available_instances);
static const struct attribute *mdev_types_attrs[] = {
&mdev_type_attr_description.attr,
&mdev_type_attr_available_instances.attr,
NULL,
};
@@ -1399,6 +1394,7 @@ static struct mdev_driver mbochs_driver = {
},
.probe = mbochs_probe,
.remove = mbochs_remove,
.get_available = mbochs_get_available,
.types_attrs = mdev_types_attrs,
};
samples/vfio-mdev/mdpy.c
+3 -6
View File
@@ -671,17 +671,13 @@ static ssize_t description_show(struct mdev_type *mtype,
}
static MDEV_TYPE_ATTR_RO(description);
static ssize_t available_instances_show(struct mdev_type *mtype,
struct mdev_type_attribute *attr,
char *buf)
static unsigned int mdpy_get_available(struct mdev_type *mtype)
{
return sprintf(buf, "%d\n", max_devices - mdpy_count);
return max_devices - mdpy_count;
}
static MDEV_TYPE_ATTR_RO(available_instances);
static const struct attribute *mdev_types_attrs[] = {
&mdev_type_attr_description.attr,
&mdev_type_attr_available_instances.attr,
NULL,
};
@@ -704,6 +700,7 @@ static struct mdev_driver mdpy_driver = {
},
.probe = mdpy_probe,
.remove = mdpy_remove,
.get_available = mdpy_get_available,
.types_attrs = mdev_types_attrs,
};
samples/vfio-mdev/mtty.c
+3 -13
View File
@@ -1256,23 +1256,13 @@ static const struct attribute_group *mdev_dev_groups[] = {
NULL,
};
static ssize_t available_instances_show(struct mdev_type *mtype,
struct mdev_type_attribute *attr,
char *buf)
static unsigned int mtty_get_available(struct mdev_type *mtype)
{
struct mtty_type *type = container_of(mtype, struct mtty_type, type);
return sprintf(buf, "%d\n", atomic_read(&mdev_avail_ports) /
type->nr_ports);
return atomic_read(&mdev_avail_ports) / type->nr_ports;
}
static MDEV_TYPE_ATTR_RO(available_instances);
static const struct attribute *mdev_types_attrs[] = {
&mdev_type_attr_available_instances.attr,
NULL,
};
static const struct vfio_device_ops mtty_dev_ops = {
.name = "vfio-mtty",
.init = mtty_init_dev,
@@ -1292,7 +1282,7 @@ static struct mdev_driver mtty_driver = {
},
.probe = mtty_probe,
.remove = mtty_remove,
.types_attrs = mdev_types_attrs,
.get_available = mtty_get_available,
};
static void mtty_device_release(struct device *dev)