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Message-Id: <20221102150152.2521475-7-farman@linux.ibm.com>
Date: Wed, 2 Nov 2022 16:01:51 +0100
From: Eric Farman <farman@...ux.ibm.com>
To: Matthew Rosato <mjrosato@...ux.ibm.com>,
Alex Williamson <alex.williamson@...hat.com>,
Cornelia Huck <cohuck@...hat.com>,
Jason Gunthorpe <jgg@...dia.com>,
Kevin Tian <kevin.tian@...el.com>, Yi Liu <yi.l.liu@...el.com>
Cc: Zhenyu Wang <zhenyuw@...ux.intel.com>,
Zhi Wang <zhi.a.wang@...el.com>,
Jani Nikula <jani.nikula@...ux.intel.com>,
Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
Rodrigo Vivi <rodrigo.vivi@...el.com>,
Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>,
David Airlie <airlied@...il.com>,
Daniel Vetter <daniel@...ll.ch>,
Halil Pasic <pasic@...ux.ibm.com>,
Vineeth Vijayan <vneethv@...ux.ibm.com>,
Peter Oberparleiter <oberpar@...ux.ibm.com>,
Heiko Carstens <hca@...ux.ibm.com>,
Vasily Gorbik <gor@...ux.ibm.com>,
Alexander Gordeev <agordeev@...ux.ibm.com>,
Christian Borntraeger <borntraeger@...ux.ibm.com>,
Sven Schnelle <svens@...ux.ibm.com>,
Tony Krowiak <akrowiak@...ux.ibm.com>,
Jason Herne <jjherne@...ux.ibm.com>,
Harald Freudenberger <freude@...ux.ibm.com>,
Diana Craciun <diana.craciun@....nxp.com>,
Eric Auger <eric.auger@...hat.com>,
Kirti Wankhede <kwankhede@...dia.com>,
Abhishek Sahu <abhsahu@...dia.com>,
Yishai Hadas <yishaih@...dia.com>,
intel-gvt-dev@...ts.freedesktop.org,
intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org, linux-s390@...r.kernel.org,
kvm@...r.kernel.org, Eric Farman <farman@...ux.ibm.com>
Subject: [PATCH v2 6/7] vfio/ccw: replace vfio_init_device with _alloc_
Now that we have a reasonable separation of structs that follow
the subchannel and mdev lifecycles, there's no reason we can't
call the official vfio_alloc_device routine for our private data,
and behave like everyone else.
Signed-off-by: Eric Farman <farman@...ux.ibm.com>
Reviewed-by: Kevin Tian <kevin.tian@...el.com>
---
drivers/s390/cio/vfio_ccw_drv.c | 18 ------------------
drivers/s390/cio/vfio_ccw_ops.c | 28 ++++++++++++++++++----------
drivers/s390/cio/vfio_ccw_private.h | 2 --
drivers/vfio/vfio_main.c | 10 +++++-----
include/linux/vfio.h | 2 --
5 files changed, 23 insertions(+), 37 deletions(-)
diff --git a/drivers/s390/cio/vfio_ccw_drv.c b/drivers/s390/cio/vfio_ccw_drv.c
index 041cc0860f0e..fd58c0f4f8cc 100644
--- a/drivers/s390/cio/vfio_ccw_drv.c
+++ b/drivers/s390/cio/vfio_ccw_drv.c
@@ -151,24 +151,6 @@ static void vfio_ccw_sch_irq(struct subchannel *sch)
vfio_ccw_fsm_event(private, VFIO_CCW_EVENT_INTERRUPT);
}
-void vfio_ccw_free_private(struct vfio_ccw_private *private)
-{
- struct vfio_ccw_crw *crw, *temp;
-
- list_for_each_entry_safe(crw, temp, &private->crw, next) {
- list_del(&crw->next);
- kfree(crw);
- }
-
- kmem_cache_free(vfio_ccw_crw_region, private->crw_region);
- kmem_cache_free(vfio_ccw_schib_region, private->schib_region);
- kmem_cache_free(vfio_ccw_cmd_region, private->cmd_region);
- kmem_cache_free(vfio_ccw_io_region, private->io_region);
- kfree(private->cp.guest_cp);
- mutex_destroy(&private->io_mutex);
- kfree(private);
-}
-
static void vfio_ccw_free_parent(struct device *dev)
{
struct vfio_ccw_parent *parent = container_of(dev, struct vfio_ccw_parent, dev);
diff --git a/drivers/s390/cio/vfio_ccw_ops.c b/drivers/s390/cio/vfio_ccw_ops.c
index 8a929a9cf3c6..1155f8bcedd9 100644
--- a/drivers/s390/cio/vfio_ccw_ops.c
+++ b/drivers/s390/cio/vfio_ccw_ops.c
@@ -102,15 +102,10 @@ static int vfio_ccw_mdev_probe(struct mdev_device *mdev)
struct vfio_ccw_private *private;
int ret;
- private = kzalloc(sizeof(*private), GFP_KERNEL);
- if (!private)
- return -ENOMEM;
-
- ret = vfio_init_device(&private->vdev, &mdev->dev, &vfio_ccw_dev_ops);
- if (ret) {
- kfree(private);
- return ret;
- }
+ private = vfio_alloc_device(vfio_ccw_private, vdev, &mdev->dev,
+ &vfio_ccw_dev_ops);
+ if (IS_ERR(private))
+ return PTR_ERR(private);
dev_set_drvdata(&parent->dev, private);
@@ -135,8 +130,21 @@ static void vfio_ccw_mdev_release_dev(struct vfio_device *vdev)
{
struct vfio_ccw_private *private =
container_of(vdev, struct vfio_ccw_private, vdev);
+ struct vfio_ccw_crw *crw, *temp;
+
+ list_for_each_entry_safe(crw, temp, &private->crw, next) {
+ list_del(&crw->next);
+ kfree(crw);
+ }
+
+ kmem_cache_free(vfio_ccw_crw_region, private->crw_region);
+ kmem_cache_free(vfio_ccw_schib_region, private->schib_region);
+ kmem_cache_free(vfio_ccw_cmd_region, private->cmd_region);
+ kmem_cache_free(vfio_ccw_io_region, private->io_region);
+ kfree(private->cp.guest_cp);
+ mutex_destroy(&private->io_mutex);
- vfio_ccw_free_private(private);
+ vfio_free_device(vdev);
}
static void vfio_ccw_mdev_remove(struct mdev_device *mdev)
diff --git a/drivers/s390/cio/vfio_ccw_private.h b/drivers/s390/cio/vfio_ccw_private.h
index 2278fd38d34e..b441ae6700fd 100644
--- a/drivers/s390/cio/vfio_ccw_private.h
+++ b/drivers/s390/cio/vfio_ccw_private.h
@@ -131,8 +131,6 @@ int vfio_ccw_sch_quiesce(struct subchannel *sch);
void vfio_ccw_sch_io_todo(struct work_struct *work);
void vfio_ccw_crw_todo(struct work_struct *work);
-void vfio_ccw_free_private(struct vfio_ccw_private *private);
-
extern struct mdev_driver vfio_ccw_mdev_driver;
/*
diff --git a/drivers/vfio/vfio_main.c b/drivers/vfio/vfio_main.c
index 2d168793d4e1..2901b8ad5be9 100644
--- a/drivers/vfio/vfio_main.c
+++ b/drivers/vfio/vfio_main.c
@@ -348,6 +348,9 @@ static void vfio_device_release(struct device *dev)
device->ops->release(device);
}
+static int vfio_init_device(struct vfio_device *device, struct device *dev,
+ const struct vfio_device_ops *ops);
+
/*
* Allocate and initialize vfio_device so it can be registered to vfio
* core.
@@ -386,11 +389,9 @@ EXPORT_SYMBOL_GPL(_vfio_alloc_device);
/*
* Initialize a vfio_device so it can be registered to vfio core.
- *
- * Only vfio-ccw driver should call this interface.
*/
-int vfio_init_device(struct vfio_device *device, struct device *dev,
- const struct vfio_device_ops *ops)
+static int vfio_init_device(struct vfio_device *device, struct device *dev,
+ const struct vfio_device_ops *ops)
{
int ret;
@@ -422,7 +423,6 @@ int vfio_init_device(struct vfio_device *device, struct device *dev,
ida_free(&vfio.device_ida, device->index);
return ret;
}
-EXPORT_SYMBOL_GPL(vfio_init_device);
/*
* The helper called by driver @release callback to free the device
diff --git a/include/linux/vfio.h b/include/linux/vfio.h
index e7cebeb875dd..ba809268a48e 100644
--- a/include/linux/vfio.h
+++ b/include/linux/vfio.h
@@ -176,8 +176,6 @@ struct vfio_device *_vfio_alloc_device(size_t size, struct device *dev,
dev, ops), \
struct dev_struct, member)
-int vfio_init_device(struct vfio_device *device, struct device *dev,
- const struct vfio_device_ops *ops);
void vfio_free_device(struct vfio_device *device);
static inline void vfio_put_device(struct vfio_device *device)
{
--
2.34.1
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