[PATCH] drm/i915/gvt: add the missing mdev attribute "name"
Zhi Wang
zhi.wang.linux at gmail.com
Tue Feb 22 15:05:32 UTC 2022
The mdev attribute "name" is required by some middle software, e.g.
KubeVirt, an open source SW that manages VM on Kubernetes cluster uses
the mdev sysfs directory/file structure to discover mediated device in
nodes in the cluster.
v2:
- Fix the missing defination in gvt_type_attrs. (Zhenyu)
Cc: Zhenyu Wang <zhenyuw at linux.intel.com>
Cc: Hui Chun Ong <hui.chun.ong at intel.com>
Cc: Terrence Xu <terrence.xu at intel.com>
Signed-off-by: Zhi Wang <zhi.a.wang at intel.com>
---
drivers/gpu/drm/i915/gvt/kvmgt.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c
index 20b82fb036f8..da9d9f05985f 100644
--- a/drivers/gpu/drm/i915/gvt/kvmgt.c
+++ b/drivers/gpu/drm/i915/gvt/kvmgt.c
@@ -186,14 +186,30 @@ static ssize_t description_show(struct mdev_type *mtype,
type->weight);
}
+static ssize_t name_show(struct mdev_type *mtype,
+ struct mdev_type_attribute *attr, char *buf)
+{
+ struct intel_vgpu_type *type;
+ struct intel_gvt *gvt = kdev_to_i915(mtype_get_parent_dev(mtype))->gvt;
+
+ type = &gvt->types[mtype_get_type_group_id(mtype)];
+ if (!type)
+ return 0;
+
+ return sprintf(buf, "%s\n", type->name);
+}
+
+
static MDEV_TYPE_ATTR_RO(available_instances);
static MDEV_TYPE_ATTR_RO(device_api);
static MDEV_TYPE_ATTR_RO(description);
+static MDEV_TYPE_ATTR_RO(name);
static struct attribute *gvt_type_attrs[] = {
&mdev_type_attr_available_instances.attr,
&mdev_type_attr_device_api.attr,
&mdev_type_attr_description.attr,
+ &mdev_type_attr_name.attr,
NULL,
};
--
2.17.1
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