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Commit a45050d7 authored by Zhenyu Wang's avatar Zhenyu Wang
Browse files

drm/i915/gvt: expose vGPU context hw id 



This exposes vGPU context hw id in mdev sysfs which is used to
do vGPU based profiling. Retrieved vGPU context hw id can be set
through i915 perf ioctl to set profiling for target vGPU.

Cc: Jiao Pengyuan <pengyuan.jiao@intel.com>
Cc: Niu Bing <bing.niu@intel.com>
Signed-off-by: default avatarZhenyu Wang <zhenyuw@linux.intel.com>
parent 4d3e67bb

drivers/gpu/drm/i915/gvt/kvmgt.c

+17 −0
Original line number Diff line number Diff line
@@ -1170,10 +1170,27 @@ vgpu_id_show(struct device *dev, struct device_attribute *attr, 
	return sprintf(buf, "\n");

}



static ssize_t

hw_id_show(struct device *dev, struct device_attribute *attr,

	   char *buf)

{

	struct mdev_device *mdev = mdev_from_dev(dev);



	if (mdev) {

		struct intel_vgpu *vgpu = (struct intel_vgpu *)

			mdev_get_drvdata(mdev);

		return sprintf(buf, "%u\n",

			       vgpu->shadow_ctx->hw_id);

	}

	return sprintf(buf, "\n");

}



static DEVICE_ATTR_RO(vgpu_id);

static DEVICE_ATTR_RO(hw_id);



static struct attribute *intel_vgpu_attrs[] = {

	&dev_attr_vgpu_id.attr,

	&dev_attr_hw_id.attr,

	NULL

};