From: Eric Farman <farman@linux.ibm.com>
To: Matthew Rosato <mjrosato@linux.ibm.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>,
Alex Williamson <alex.williamson@redhat.com>,
Liu Yi L <yi.l.liu@intel.com>, Halil Pasic <pasic@linux.ibm.com>,
kvm@vger.kernel.org, linux-s390@vger.kernel.org,
Cornelia Huck <cohuck@redhat.com>,
Eric Farman <farman@linux.ibm.com>
Subject: [PATCH v1 17/18] vfio: Export vfio_device_try_get()
Date: Thu, 2 Jun 2022 19:19:47 +0200 [thread overview]
Message-ID: <20220602171948.2790690-18-farman@linux.ibm.com> (raw)
In-Reply-To: <20220602171948.2790690-1-farman@linux.ibm.com>
From: Jason Gunthorpe <jgg@nvidia.com>
vfio_ccw will need it.
Cc: Alex Williamson <alex.williamson@redhat.com>
Cc: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/9-v3-57c1502c62fd+2190-ccw_mdev_jgg@nvidia.com/
[farman: added Cc: tags]
Signed-off-by: Eric Farman <farman@linux.ibm.com>
---
drivers/vfio/vfio.c | 3 ++-
include/linux/vfio.h | 1 +
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c
index a4555014bd1e..a1f5904b5ea3 100644
--- a/drivers/vfio/vfio.c
+++ b/drivers/vfio/vfio.c
@@ -499,10 +499,11 @@ void vfio_device_put(struct vfio_device *device)
}
EXPORT_SYMBOL_GPL(vfio_device_put);
-static bool vfio_device_try_get(struct vfio_device *device)
+bool vfio_device_try_get(struct vfio_device *device)
{
return refcount_inc_not_zero(&device->refcount);
}
+EXPORT_SYMBOL_GPL(vfio_device_try_get);
static struct vfio_device *vfio_group_get_device(struct vfio_group *group,
struct device *dev)
diff --git a/include/linux/vfio.h b/include/linux/vfio.h
index 66dda06ec42d..bcd6eaaea9a5 100644
--- a/include/linux/vfio.h
+++ b/include/linux/vfio.h
@@ -126,6 +126,7 @@ int vfio_register_group_dev(struct vfio_device *device);
int vfio_register_emulated_iommu_dev(struct vfio_device *device);
void vfio_unregister_group_dev(struct vfio_device *device);
extern struct vfio_device *vfio_device_get_from_dev(struct device *dev);
+bool vfio_device_try_get(struct vfio_device *device);
extern void vfio_device_put(struct vfio_device *device);
int vfio_assign_device_set(struct vfio_device *device, void *set_id);
--
2.32.0
next prev parent reply other threads:[~2022-06-02 17:20 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-02 17:19 [PATCH v1 00/18] VFIO ccw/mdev rework Eric Farman
2022-06-02 17:19 ` [PATCH v1 01/18] vfio/ccw: Remove UUID from s390 debug log Eric Farman
2022-06-02 18:55 ` Jason Gunthorpe
2022-06-02 19:51 ` Matthew Rosato
2022-06-03 19:03 ` Eric Farman
2022-06-06 20:45 ` Matthew Rosato
2022-06-02 17:19 ` [PATCH v1 02/18] vfio/ccw: Fix FSM state if mdev probe fails Eric Farman
2022-06-02 18:58 ` Jason Gunthorpe
2022-06-03 13:21 ` Matthew Rosato
2022-06-03 19:12 ` Eric Farman
2022-06-06 20:44 ` Matthew Rosato
2022-06-02 17:19 ` [PATCH v1 03/18] vfio/ccw: Ensure mdev->dev is cleared on mdev remove Eric Farman
2022-06-03 13:25 ` Matthew Rosato
2022-06-03 13:37 ` Jason Gunthorpe
2022-06-03 15:20 ` Tony Krowiak
2022-06-02 17:19 ` [PATCH v1 04/18] vfio/ccw: Do not change FSM state in subchannel event Eric Farman
2022-06-02 17:19 ` [PATCH v1 05/18] vfio/ccw: Remove private->mdev Eric Farman
2022-06-02 19:02 ` Jason Gunthorpe
2022-06-02 19:13 ` Eric Farman
2022-06-02 17:19 ` [PATCH v1 06/18] vfio/ccw: Pass enum to FSM event jumptable Eric Farman
2022-06-02 19:02 ` Jason Gunthorpe
2022-06-02 19:22 ` Matthew Rosato
2022-06-02 17:19 ` [PATCH v1 07/18] vfio/ccw: Flatten MDEV device (un)register Eric Farman
2022-06-02 19:03 ` Jason Gunthorpe
2022-06-02 19:14 ` Matthew Rosato
2022-06-03 20:38 ` Eric Farman
2022-06-02 17:19 ` [PATCH v1 08/18] vfio/ccw: Check that private pointer is not NULL Eric Farman
2022-06-02 19:04 ` Matthew Rosato
2022-06-02 19:05 ` Jason Gunthorpe
2022-06-02 17:19 ` [PATCH v1 09/18] vfio/ccw: Create an OPEN FSM Event Eric Farman
2022-06-02 19:08 ` Jason Gunthorpe
2022-06-02 17:19 ` [PATCH v1 10/18] vfio/ccw: Create a CLOSE FSM event Eric Farman
2022-06-02 19:10 ` Jason Gunthorpe
2022-06-02 17:19 ` [PATCH v1 11/18] vfio/ccw: Refactor vfio_ccw_mdev_reset Eric Farman
2022-06-02 19:11 ` Jason Gunthorpe
2022-06-02 17:19 ` [PATCH v1 12/18] vfio/ccw: Move FSM open/close to MDEV open/close Eric Farman
2022-06-02 19:14 ` Jason Gunthorpe
2022-06-02 17:19 ` [PATCH v1 13/18] vfio/mdev: Consolidate all the device_api sysfs into the core code Eric Farman
2022-06-03 6:36 ` Christoph Hellwig
2022-06-03 14:55 ` Tony Krowiak
2022-06-06 19:43 ` Kirti Wankhede
2022-06-10 7:22 ` Tian, Kevin
2022-06-02 17:19 ` [PATCH v1 14/18] vfio/mdev: Add mdev available instance checking to the core Eric Farman
2022-06-03 15:02 ` Tony Krowiak
2022-06-06 20:02 ` Kirti Wankhede
2022-06-06 20:23 ` Eric Farman
2022-06-06 20:37 ` Matthew Rosato
2022-06-10 7:43 ` Tian, Kevin
2022-06-13 6:46 ` Christoph Hellwig
2022-06-13 14:08 ` Eric Farman
2022-06-02 17:19 ` [PATCH v1 15/18] vfio/ccw: Manage private with mdev Eric Farman
2022-06-02 17:19 ` [PATCH v1 16/18] vfio/ccw: Create a get_private routine Eric Farman
2022-06-02 19:17 ` Jason Gunthorpe
2022-06-02 17:19 ` Eric Farman [this message]
2022-06-03 7:46 ` [PATCH v1 17/18] vfio: Export vfio_device_try_get() Cornelia Huck
2022-06-02 17:19 ` [PATCH v1 18/18] vfio/ccw: Manage ccw/mdev reference counts Eric Farman
2022-06-02 19:20 ` Jason Gunthorpe
2022-06-02 19:29 ` [PATCH v1 00/18] VFIO ccw/mdev rework Jason Gunthorpe
2022-06-10 4:11 ` Yi Liu
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