vfio: add a vfio_ prefix to virqfd_enable and virqfd_disable and export

We want to reuse virqfd functionality in multiple VFIO drivers; before
moving these functions to core VFIO, add the vfio_ prefix to the
virqfd_enable and virqfd_disable functions, and export them so they can
be used from other modules.

Signed-off-by: Antonios Motakis <a.motakis@virtualopensystems.com>
Signed-off-by: Baptiste Reynal <b.reynal@virtualopensystems.com>
Reviewed-by: Eric Auger <eric.auger@linaro.org>
Tested-by: Eric Auger <eric.auger@linaro.org>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>

1 files changed, 16 insertions, 14 deletions

diff --git a/drivers/vfio/pci/vfio_pci_intrs.c b/drivers/vfio/pci/vfio_pci_intrs.c
index 2027a27546ef..09e38b92ae50 100644
--- a/drivers/vfio/pci/vfio_pci_intrs.c
+++ b/drivers/vfio/pci/vfio_pci_intrs.c
@@ -126,10 +126,10 @@ static void virqfd_inject(struct work_struct *work)
                 virqfd->thread(virqfd->vdev, virqfd->data);
 }
 
-static int virqfd_enable(struct vfio_pci_device *vdev,
-                         int (*handler)(struct vfio_pci_device *, void *),
-                         void (*thread)(struct vfio_pci_device *, void *),
-                         void *data, struct virqfd **pvirqfd, int fd)
+int vfio_virqfd_enable(struct vfio_pci_device *vdev,
+                       int (*handler)(struct vfio_pci_device *, void *),
+                       void (*thread)(struct vfio_pci_device *, void *),
+                       void *data, struct virqfd **pvirqfd, int fd)
 {
         struct fd irqfd;
         struct eventfd_ctx *ctx;
@@ -215,9 +215,9 @@ err_fd:
 
         return ret;
 }
+EXPORT_SYMBOL_GPL(vfio_virqfd_enable);
 
-static void virqfd_disable(struct vfio_pci_device *vdev,
-                           struct virqfd **pvirqfd)
+void vfio_virqfd_disable(struct vfio_pci_device *vdev, struct virqfd **pvirqfd)
 {
         unsigned long flags;
 
@@ -237,6 +237,7 @@ static void virqfd_disable(struct vfio_pci_device *vdev,
          */
         flush_workqueue(vfio_irqfd_cleanup_wq);
 }
+EXPORT_SYMBOL_GPL(vfio_virqfd_disable);
 
 /*
  * INTx
@@ -440,8 +441,8 @@ static int vfio_intx_set_signal(struct vfio_pci_device *vdev, int fd)
 static void vfio_intx_disable(struct vfio_pci_device *vdev)
 {
         vfio_intx_set_signal(vdev, -1);
-        virqfd_disable(vdev, &vdev->ctx[0].unmask);
-        virqfd_disable(vdev, &vdev->ctx[0].mask);
+        vfio_virqfd_disable(vdev, &vdev->ctx[0].unmask);
+        vfio_virqfd_disable(vdev, &vdev->ctx[0].mask);
         vdev->irq_type = VFIO_PCI_NUM_IRQS;
         vdev->num_ctx = 0;
         kfree(vdev->ctx);
@@ -605,8 +606,8 @@ static void vfio_msi_disable(struct vfio_pci_device *vdev, bool msix)
         vfio_msi_set_block(vdev, 0, vdev->num_ctx, NULL, msix);
 
         for (i = 0; i < vdev->num_ctx; i++) {
-                virqfd_disable(vdev, &vdev->ctx[i].unmask);
-                virqfd_disable(vdev, &vdev->ctx[i].mask);
+                vfio_virqfd_disable(vdev, &vdev->ctx[i].unmask);
+                vfio_virqfd_disable(vdev, &vdev->ctx[i].mask);
         }
 
         if (msix) {
@@ -639,11 +640,12 @@ static int vfio_pci_set_intx_unmask(struct vfio_pci_device *vdev,
         } else if (flags & VFIO_IRQ_SET_DATA_EVENTFD) {
                 int32_t fd = *(int32_t *)data;
                 if (fd >= 0)
-                        return virqfd_enable(vdev, vfio_pci_intx_unmask_handler,
-                                             vfio_send_intx_eventfd, NULL,
-                                             &vdev->ctx[0].unmask, fd);
+                        return vfio_virqfd_enable(vdev,
+                                                  vfio_pci_intx_unmask_handler,
+                                                  vfio_send_intx_eventfd, NULL,
+                                                  &vdev->ctx[0].unmask, fd);
 
-                virqfd_disable(vdev, &vdev->ctx[0].unmask);
+                vfio_virqfd_disable(vdev, &vdev->ctx[0].unmask);
         }
 
         return 0;