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vfio: Remove vfio_free_device 

With the "mess" sorted out, we should be able to inline the
vfio_free_device call introduced by commit cb9ff3f3b8
("vfio: Add helpers for unifying vfio_device life cycle")
and remove them from driver release callbacks.

Signed-off-by: Eric Farman <farman@linux.ibm.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Tony Krowiak <akrowiak@linux.ibm.com>	# vfio-ap part
Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com>
Link: https://lore.kernel.org/r/20221104142007.1314999-8-farman@linux.ibm.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Eric Farman 2022-11-04 15:20:07 +01:00 committed by Alex Williamson
parent d1104f9327
commit 913447d06f
12 changed files with 4 additions and 35 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/gpu/drm/i915/gvt/kvmgt.c
View File

@ -1461,7 +1461,6 @@ static void intel_vgpu_release_dev(struct vfio_device *vfio_dev)
struct intel_vgpu *vgpu = vfio_dev_to_vgpu(vfio_dev);
intel_gvt_destroy_vgpu(vgpu);
vfio_free_device(vfio_dev);
}
static const struct vfio_device_ops intel_vgpu_dev_ops = {

2
drivers/s390/cio/vfio_ccw_ops.c
View File

@ -143,8 +143,6 @@ static void vfio_ccw_mdev_release_dev(struct vfio_device *vdev)
kmem_cache_free(vfio_ccw_io_region, private->io_region);
kfree(private->cp.guest_cp);
mutex_destroy(&private->io_mutex);
vfio_free_device(vdev);
}
static void vfio_ccw_mdev_remove(struct mdev_device *mdev)

6
drivers/s390/crypto/vfio_ap_ops.c
View File

@ -765,11 +765,6 @@ static void vfio_ap_mdev_unlink_fr_queues(struct ap_matrix_mdev *matrix_mdev)
}
}
static void vfio_ap_mdev_release_dev(struct vfio_device *vdev)
{
vfio_free_device(vdev);
}
static void vfio_ap_mdev_remove(struct mdev_device *mdev)
{
struct ap_matrix_mdev *matrix_mdev = dev_get_drvdata(&mdev->dev);
@ -1784,7 +1779,6 @@ static const struct attribute_group vfio_queue_attr_group = {
static const struct vfio_device_ops vfio_ap_matrix_dev_ops = {
.init = vfio_ap_mdev_init_dev,
.release = vfio_ap_mdev_release_dev,
.open_device = vfio_ap_mdev_open_device,
.close_device = vfio_ap_mdev_close_device,
.ioctl = vfio_ap_mdev_ioctl,

1
drivers/vfio/fsl-mc/vfio_fsl_mc.c
View File

@ -568,7 +568,6 @@ static void vfio_fsl_mc_release_dev(struct vfio_device *core_vdev)
vfio_fsl_uninit_device(vdev);
mutex_destroy(&vdev->igate);
vfio_free_device(core_vdev);
}
static int vfio_fsl_mc_remove(struct fsl_mc_device *mc_dev)

1
drivers/vfio/pci/vfio_pci_core.c
View File

@ -2109,7 +2109,6 @@ void vfio_pci_core_release_dev(struct vfio_device *core_vdev)
mutex_destroy(&vdev->vma_lock);
kfree(vdev->region);
kfree(vdev->pm_save);
vfio_free_device(core_vdev);
}
EXPORT_SYMBOL_GPL(vfio_pci_core_release_dev);

1
drivers/vfio/platform/vfio_amba.c
View File

@ -95,7 +95,6 @@ static void vfio_amba_release_dev(struct vfio_device *core_vdev)
vfio_platform_release_common(vdev);
kfree(vdev->name);
vfio_free_device(core_vdev);
}
static void vfio_amba_remove(struct amba_device *adev)

1
drivers/vfio/platform/vfio_platform.c
View File

@ -83,7 +83,6 @@ static void vfio_platform_release_dev(struct vfio_device *core_vdev)
container_of(core_vdev, struct vfio_platform_device, vdev);
vfio_platform_release_common(vdev);
vfio_free_device(core_vdev);
}
static int vfio_platform_remove(struct platform_device *pdev)

20
drivers/vfio/vfio_main.c
View File

@ -339,13 +339,10 @@ static void vfio_device_release(struct device *dev)
vfio_release_device_set(device);
ida_free(&vfio.device_ida, device->index);
/*
* kvfree() cannot be done here due to a life cycle mess in
* vfio-ccw. Before the ccw part is fixed all drivers are
* required to support @release and call vfio_free_device()
* from there.
*/
if (device->ops->release)
device->ops->release(device);
kvfree(device);
}
static int vfio_init_device(struct vfio_device *device, struct device *dev,
@ -424,17 +421,6 @@ out_uninit:
return ret;
}
/*
* The helper called by driver @release callback to free the device
* structure. Drivers which don't have private data to clean can
* simply use this helper as its @release.
*/
void vfio_free_device(struct vfio_device *device)
{
kvfree(device);
}
EXPORT_SYMBOL_GPL(vfio_free_device);
static struct vfio_group *vfio_noiommu_group_alloc(struct device *dev,
enum vfio_group_type type)
{

1
include/linux/vfio.h
View File

@ -176,7 +176,6 @@ struct vfio_device *_vfio_alloc_device(size_t size, struct device *dev,
dev, ops), \
struct dev_struct, member)
void vfio_free_device(struct vfio_device *device);
static inline void vfio_put_device(struct vfio_device *device)
{
put_device(&device->device);

1
samples/vfio-mdev/mbochs.c
View File

@ -594,7 +594,6 @@ static void mbochs_release_dev(struct vfio_device *vdev)
atomic_add(mdev_state->type->mbytes, &mbochs_avail_mbytes);
kfree(mdev_state->pages);
kfree(mdev_state->vconfig);
vfio_free_device(vdev);
}
static void mbochs_remove(struct mdev_device *mdev)

1
samples/vfio-mdev/mdpy.c
View File

@ -283,7 +283,6 @@ static void mdpy_release_dev(struct vfio_device *vdev)
vfree(mdev_state->memblk);
kfree(mdev_state->vconfig);
vfio_free_device(vdev);
}
static void mdpy_remove(struct mdev_device *mdev)

1
samples/vfio-mdev/mtty.c
View File

@ -784,7 +784,6 @@ static void mtty_release_dev(struct vfio_device *vdev)
atomic_add(mdev_state->nr_ports, &mdev_avail_ports);
kfree(mdev_state->vconfig);
vfio_free_device(vdev);
}
static void mtty_remove(struct mdev_device *mdev)