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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
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drivers/vfio/mdev/mdev_sysfs.c
+11
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@@ -90,10 +90,21 @@ static ssize_t name_show(struct mdev_type *mtype,
static MDEV_TYPE_ATTR_RO(name);
static ssize_t available_instances_show(struct mdev_type *mtype,
struct mdev_type_attribute *attr,
char *buf)
{
struct mdev_driver *drv = mtype->parent->mdev_driver;
return sysfs_emit(buf, "%u\n", drv->get_available(mtype));
}
static MDEV_TYPE_ATTR_RO(available_instances);
static struct attribute *mdev_types_core_attrs[] = {
&mdev_type_attr_create.attr,
&mdev_type_attr_device_api.attr,
&mdev_type_attr_name.attr,
&mdev_type_attr_available_instances.attr,
NULL,
};