diff options
Diffstat (limited to 'drivers/vhost/vringh.c')
| -rw-r--r-- | drivers/vhost/vringh.c | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/drivers/vhost/vringh.c b/drivers/vhost/vringh.c index bbce65452701..9f27c3f6091b 100644 --- a/drivers/vhost/vringh.c +++ b/drivers/vhost/vringh.c @@ -780,22 +780,6 @@ ssize_t vringh_iov_push_user(struct vringh_iov *wiov, EXPORT_SYMBOL(vringh_iov_push_user); /** - * vringh_abandon_user - we've decided not to handle the descriptor(s). - * @vrh: the vring. - * @num: the number of descriptors to put back (ie. num - * vringh_get_user() to undo). - * - * The next vringh_get_user() will return the old descriptor(s) again. - */ -void vringh_abandon_user(struct vringh *vrh, unsigned int num) -{ - /* We only update vring_avail_event(vr) when we want to be notified, - * so we haven't changed that yet. */ - vrh->last_avail_idx -= num; -} -EXPORT_SYMBOL(vringh_abandon_user); - -/** * vringh_complete_user - we've finished with descriptor, publish it. * @vrh: the vring. * @head: the head as filled in by vringh_getdesc_user. @@ -900,20 +884,6 @@ static inline int putused_kern(const struct vringh *vrh, return 0; } -static inline int xfer_kern(const struct vringh *vrh, void *src, - void *dst, size_t len) -{ - memcpy(dst, src, len); - return 0; -} - -static inline int kern_xfer(const struct vringh *vrh, void *dst, - void *src, size_t len) -{ - memcpy(dst, src, len); - return 0; -} - /** * vringh_init_kern - initialize a vringh for a kernelspace vring. * @vrh: the vringh to initialize. @@ -999,51 +969,6 @@ int vringh_getdesc_kern(struct vringh *vrh, EXPORT_SYMBOL(vringh_getdesc_kern); /** - * vringh_iov_pull_kern - copy bytes from vring_iov. - * @riov: the riov as passed to vringh_getdesc_kern() (updated as we consume) - * @dst: the place to copy. - * @len: the maximum length to copy. - * - * Returns the bytes copied <= len or a negative errno. - */ -ssize_t vringh_iov_pull_kern(struct vringh_kiov *riov, void *dst, size_t len) -{ - return vringh_iov_xfer(NULL, riov, dst, len, xfer_kern); -} -EXPORT_SYMBOL(vringh_iov_pull_kern); - -/** - * vringh_iov_push_kern - copy bytes into vring_iov. - * @wiov: the wiov as passed to vringh_getdesc_kern() (updated as we consume) - * @src: the place to copy from. - * @len: the maximum length to copy. - * - * Returns the bytes copied <= len or a negative errno. - */ -ssize_t vringh_iov_push_kern(struct vringh_kiov *wiov, - const void *src, size_t len) -{ - return vringh_iov_xfer(NULL, wiov, (void *)src, len, kern_xfer); -} -EXPORT_SYMBOL(vringh_iov_push_kern); - -/** - * vringh_abandon_kern - we've decided not to handle the descriptor(s). - * @vrh: the vring. - * @num: the number of descriptors to put back (ie. num - * vringh_get_kern() to undo). - * - * The next vringh_get_kern() will return the old descriptor(s) again. - */ -void vringh_abandon_kern(struct vringh *vrh, unsigned int num) -{ - /* We only update vring_avail_event(vr) when we want to be notified, - * so we haven't changed that yet. */ - vrh->last_avail_idx -= num; -} -EXPORT_SYMBOL(vringh_abandon_kern); - -/** * vringh_complete_kern - we've finished with descriptor, publish it. * @vrh: the vring. * @head: the head as filled in by vringh_getdesc_kern. @@ -1535,23 +1460,6 @@ ssize_t vringh_iov_push_iotlb(struct vringh *vrh, EXPORT_SYMBOL(vringh_iov_push_iotlb); /** - * vringh_abandon_iotlb - we've decided not to handle the descriptor(s). - * @vrh: the vring. - * @num: the number of descriptors to put back (ie. num - * vringh_get_iotlb() to undo). - * - * The next vringh_get_iotlb() will return the old descriptor(s) again. - */ -void vringh_abandon_iotlb(struct vringh *vrh, unsigned int num) -{ - /* We only update vring_avail_event(vr) when we want to be notified, - * so we haven't changed that yet. - */ - vrh->last_avail_idx -= num; -} -EXPORT_SYMBOL(vringh_abandon_iotlb); - -/** * vringh_complete_iotlb - we've finished with descriptor, publish it. * @vrh: the vring. * @head: the head as filled in by vringh_getdesc_iotlb. @@ -1572,32 +1480,6 @@ int vringh_complete_iotlb(struct vringh *vrh, u16 head, u32 len) EXPORT_SYMBOL(vringh_complete_iotlb); /** - * vringh_notify_enable_iotlb - we want to know if something changes. - * @vrh: the vring. - * - * This always enables notifications, but returns false if there are - * now more buffers available in the vring. - */ -bool vringh_notify_enable_iotlb(struct vringh *vrh) -{ - return __vringh_notify_enable(vrh, getu16_iotlb, putu16_iotlb); -} -EXPORT_SYMBOL(vringh_notify_enable_iotlb); - -/** - * vringh_notify_disable_iotlb - don't tell us if something changes. - * @vrh: the vring. - * - * This is our normal running state: we disable and then only enable when - * we're going to sleep. - */ -void vringh_notify_disable_iotlb(struct vringh *vrh) -{ - __vringh_notify_disable(vrh, putu16_iotlb); -} -EXPORT_SYMBOL(vringh_notify_disable_iotlb); - -/** * vringh_need_notify_iotlb - must we tell the other side about used buffers? * @vrh: the vring we've called vringh_complete_iotlb() on. * |