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| author | Alex Williamson <alex.williamson@redhat.com> | 2015-03-17 08:33:38 -0600 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2015-03-17 08:33:38 -0600 |
| commit | 71be3423a62be548c56bab5b818e1a1383e659d2 (patch) | |
| tree | b2896fa415f72111e8c26a42d2ee822ac701ac67 /drivers/vfio/virqfd.c | |
| parent | 66fdc052d7dba5bb8386f7a1a38107ba8307a59e (diff) | |
| download | linux-71be3423a62be548c56bab5b818e1a1383e659d2.tar.gz linux-71be3423a62be548c56bab5b818e1a1383e659d2.tar.bz2 linux-71be3423a62be548c56bab5b818e1a1383e659d2.zip | |
vfio: Split virqfd into a separate module for vfio bus drivers
An unintended consequence of commit 42ac9bd18d4f ("vfio: initialize
the virqfd workqueue in VFIO generic code") is that the vfio module
is renamed to vfio_core so that it can include both vfio and virqfd.
That's a user visible change that may break module loading scritps
and it imposes eventfd support as a dependency on the core vfio code,
which it's really not. virqfd is intended to be provided as a service
to vfio bus drivers, so instead of wrapping it into vfio.ko, we can
make it a stand-alone module toggled by vfio bus drivers. This has
the additional benefit of removing initialization and exit from the
core vfio code.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers/vfio/virqfd.c')
| -rw-r--r-- | drivers/vfio/virqfd.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/vfio/virqfd.c b/drivers/vfio/virqfd.c index 3d19aaf0e6c9..27c89cd5d70b 100644 --- a/drivers/vfio/virqfd.c +++ b/drivers/vfio/virqfd.c @@ -13,12 +13,17 @@ #include <linux/vfio.h> #include <linux/eventfd.h> #include <linux/file.h> +#include <linux/module.h> #include <linux/slab.h> +#define DRIVER_VERSION "0.1" +#define DRIVER_AUTHOR "Alex Williamson <alex.williamson@redhat.com>" +#define DRIVER_DESC "IRQFD support for VFIO bus drivers" + static struct workqueue_struct *vfio_irqfd_cleanup_wq; static DEFINE_SPINLOCK(virqfd_lock); -int __init vfio_virqfd_init(void) +static int __init vfio_virqfd_init(void) { vfio_irqfd_cleanup_wq = create_singlethread_workqueue("vfio-irqfd-cleanup"); @@ -28,7 +33,7 @@ int __init vfio_virqfd_init(void) return 0; } -void vfio_virqfd_exit(void) +static void __exit vfio_virqfd_exit(void) { destroy_workqueue(vfio_irqfd_cleanup_wq); } @@ -211,3 +216,11 @@ void vfio_virqfd_disable(struct virqfd **pvirqfd) flush_workqueue(vfio_irqfd_cleanup_wq); } EXPORT_SYMBOL_GPL(vfio_virqfd_disable); + +module_init(vfio_virqfd_init); +module_exit(vfio_virqfd_exit); + +MODULE_VERSION(DRIVER_VERSION); +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); |