diff options
Diffstat (limited to 'drivers/vhost/vhost.c')
| -rw-r--r-- | drivers/vhost/vhost.c | 51 |
1 files changed, 50 insertions, 1 deletions
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index 4d135b1a861e..e58cf0001cee 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -25,6 +25,7 @@ #include <linux/slab.h> #include <linux/kthread.h> #include <linux/cgroup.h> +#include <linux/module.h> #include "vhost.h" @@ -66,6 +67,7 @@ void vhost_work_init(struct vhost_work *work, vhost_work_fn_t fn) work->flushing = 0; work->queue_seq = work->done_seq = 0; } +EXPORT_SYMBOL_GPL(vhost_work_init); /* Init poll structure */ void vhost_poll_init(struct vhost_poll *poll, vhost_work_fn_t fn, @@ -79,6 +81,7 @@ void vhost_poll_init(struct vhost_poll *poll, vhost_work_fn_t fn, vhost_work_init(&poll->work, fn); } +EXPORT_SYMBOL_GPL(vhost_poll_init); /* Start polling a file. We add ourselves to file's wait queue. The caller must * keep a reference to a file until after vhost_poll_stop is called. */ @@ -101,6 +104,7 @@ int vhost_poll_start(struct vhost_poll *poll, struct file *file) return ret; } +EXPORT_SYMBOL_GPL(vhost_poll_start); /* Stop polling a file. After this function returns, it becomes safe to drop the * file reference. You must also flush afterwards. */ @@ -111,6 +115,7 @@ void vhost_poll_stop(struct vhost_poll *poll) poll->wqh = NULL; } } +EXPORT_SYMBOL_GPL(vhost_poll_stop); static bool vhost_work_seq_done(struct vhost_dev *dev, struct vhost_work *work, unsigned seq) @@ -123,7 +128,7 @@ static bool vhost_work_seq_done(struct vhost_dev *dev, struct vhost_work *work, return left <= 0; } -static void vhost_work_flush(struct vhost_dev *dev, struct vhost_work *work) +void vhost_work_flush(struct vhost_dev *dev, struct vhost_work *work) { unsigned seq; int flushing; @@ -138,6 +143,7 @@ static void vhost_work_flush(struct vhost_dev *dev, struct vhost_work *work) spin_unlock_irq(&dev->work_lock); BUG_ON(flushing < 0); } +EXPORT_SYMBOL_GPL(vhost_work_flush); /* Flush any work that has been scheduled. When calling this, don't hold any * locks that are also used by the callback. */ @@ -145,6 +151,7 @@ void vhost_poll_flush(struct vhost_poll *poll) { vhost_work_flush(poll->dev, &poll->work); } +EXPORT_SYMBOL_GPL(vhost_poll_flush); void vhost_work_queue(struct vhost_dev *dev, struct vhost_work *work) { @@ -158,11 +165,13 @@ void vhost_work_queue(struct vhost_dev *dev, struct vhost_work *work) } spin_unlock_irqrestore(&dev->work_lock, flags); } +EXPORT_SYMBOL_GPL(vhost_work_queue); void vhost_poll_queue(struct vhost_poll *poll) { vhost_work_queue(poll->dev, &poll->work); } +EXPORT_SYMBOL_GPL(vhost_poll_queue); static void vhost_vq_reset(struct vhost_dev *dev, struct vhost_virtqueue *vq) @@ -311,6 +320,7 @@ long vhost_dev_init(struct vhost_dev *dev, return 0; } +EXPORT_SYMBOL_GPL(vhost_dev_init); /* Caller should have device mutex */ long vhost_dev_check_owner(struct vhost_dev *dev) @@ -318,6 +328,7 @@ long vhost_dev_check_owner(struct vhost_dev *dev) /* Are you the owner? If not, I don't think you mean to do that */ return dev->mm == current->mm ? 0 : -EPERM; } +EXPORT_SYMBOL_GPL(vhost_dev_check_owner); struct vhost_attach_cgroups_struct { struct vhost_work work; @@ -349,6 +360,7 @@ bool vhost_dev_has_owner(struct vhost_dev *dev) { return dev->mm; } +EXPORT_SYMBOL_GPL(vhost_dev_has_owner); /* Caller should have device mutex */ long vhost_dev_set_owner(struct vhost_dev *dev) @@ -392,11 +404,13 @@ err_worker: err_mm: return err; } +EXPORT_SYMBOL_GPL(vhost_dev_set_owner); struct vhost_memory *vhost_dev_reset_owner_prepare(void) { return kmalloc(offsetof(struct vhost_memory, regions), GFP_KERNEL); } +EXPORT_SYMBOL_GPL(vhost_dev_reset_owner_prepare); /* Caller should have device mutex */ void vhost_dev_reset_owner(struct vhost_dev *dev, struct vhost_memory *memory) @@ -407,6 +421,7 @@ void vhost_dev_reset_owner(struct vhost_dev *dev, struct vhost_memory *memory) memory->nregions = 0; RCU_INIT_POINTER(dev->memory, memory); } +EXPORT_SYMBOL_GPL(vhost_dev_reset_owner); void vhost_dev_stop(struct vhost_dev *dev) { @@ -419,6 +434,7 @@ void vhost_dev_stop(struct vhost_dev *dev) } } } +EXPORT_SYMBOL_GPL(vhost_dev_stop); /* Caller should have device mutex if and only if locked is set */ void vhost_dev_cleanup(struct vhost_dev *dev, bool locked) @@ -459,6 +475,7 @@ void vhost_dev_cleanup(struct vhost_dev *dev, bool locked) mmput(dev->mm); dev->mm = NULL; } +EXPORT_SYMBOL_GPL(vhost_dev_cleanup); static int log_access_ok(void __user *log_base, u64 addr, unsigned long sz) { @@ -544,6 +561,7 @@ int vhost_log_access_ok(struct vhost_dev *dev) lockdep_is_held(&dev->mutex)); return memory_access_ok(dev, mp, 1); } +EXPORT_SYMBOL_GPL(vhost_log_access_ok); /* Verify access for write logging. */ /* Caller should have vq mutex and device mutex */ @@ -569,6 +587,7 @@ int vhost_vq_access_ok(struct vhost_virtqueue *vq) return vq_access_ok(vq->dev, vq->num, vq->desc, vq->avail, vq->used) && vq_log_access_ok(vq->dev, vq, vq->log_base); } +EXPORT_SYMBOL_GPL(vhost_vq_access_ok); static long vhost_set_memory(struct vhost_dev *d, struct vhost_memory __user *m) { @@ -798,6 +817,7 @@ long vhost_vring_ioctl(struct vhost_dev *d, int ioctl, void __user *argp) vhost_poll_flush(&vq->poll); return r; } +EXPORT_SYMBOL_GPL(vhost_vring_ioctl); /* Caller must have device mutex */ long vhost_dev_ioctl(struct vhost_dev *d, unsigned int ioctl, void __user *argp) @@ -878,6 +898,7 @@ long vhost_dev_ioctl(struct vhost_dev *d, unsigned int ioctl, void __user *argp) done: return r; } +EXPORT_SYMBOL_GPL(vhost_dev_ioctl); static const struct vhost_memory_region *find_region(struct vhost_memory *mem, __u64 addr, __u32 len) @@ -969,6 +990,7 @@ int vhost_log_write(struct vhost_virtqueue *vq, struct vhost_log *log, BUG(); return 0; } +EXPORT_SYMBOL_GPL(vhost_log_write); static int vhost_update_used_flags(struct vhost_virtqueue *vq) { @@ -1020,6 +1042,7 @@ int vhost_init_used(struct vhost_virtqueue *vq) vq->signalled_used_valid = false; return get_user(vq->last_used_idx, &vq->used->idx); } +EXPORT_SYMBOL_GPL(vhost_init_used); static int translate_desc(struct vhost_dev *dev, u64 addr, u32 len, struct iovec iov[], int iov_size) @@ -1296,12 +1319,14 @@ int vhost_get_vq_desc(struct vhost_dev *dev, struct vhost_virtqueue *vq, BUG_ON(!(vq->used_flags & VRING_USED_F_NO_NOTIFY)); return head; } +EXPORT_SYMBOL_GPL(vhost_get_vq_desc); /* Reverse the effect of vhost_get_vq_desc. Useful for error handling. */ void vhost_discard_vq_desc(struct vhost_virtqueue *vq, int n) { vq->last_avail_idx -= n; } +EXPORT_SYMBOL_GPL(vhost_discard_vq_desc); /* After we've used one of their buffers, we tell them about it. We'll then * want to notify the guest, using eventfd. */ @@ -1350,6 +1375,7 @@ int vhost_add_used(struct vhost_virtqueue *vq, unsigned int head, int len) vq->signalled_used_valid = false; return 0; } +EXPORT_SYMBOL_GPL(vhost_add_used); static int __vhost_add_used_n(struct vhost_virtqueue *vq, struct vring_used_elem *heads, @@ -1419,6 +1445,7 @@ int vhost_add_used_n(struct vhost_virtqueue *vq, struct vring_used_elem *heads, } return r; } +EXPORT_SYMBOL_GPL(vhost_add_used_n); static bool vhost_notify(struct vhost_dev *dev, struct vhost_virtqueue *vq) { @@ -1463,6 +1490,7 @@ void vhost_signal(struct vhost_dev *dev, struct vhost_virtqueue *vq) if (vq->call_ctx && vhost_notify(dev, vq)) eventfd_signal(vq->call_ctx, 1); } +EXPORT_SYMBOL_GPL(vhost_signal); /* And here's the combo meal deal. Supersize me! */ void vhost_add_used_and_signal(struct vhost_dev *dev, @@ -1472,6 +1500,7 @@ void vhost_add_used_and_signal(struct vhost_dev *dev, vhost_add_used(vq, head, len); vhost_signal(dev, vq); } +EXPORT_SYMBOL_GPL(vhost_add_used_and_signal); /* multi-buffer version of vhost_add_used_and_signal */ void vhost_add_used_and_signal_n(struct vhost_dev *dev, @@ -1481,6 +1510,7 @@ void vhost_add_used_and_signal_n(struct vhost_dev *dev, vhost_add_used_n(vq, heads, count); vhost_signal(dev, vq); } +EXPORT_SYMBOL_GPL(vhost_add_used_and_signal_n); /* OK, now we need to know about added descriptors. */ bool vhost_enable_notify(struct vhost_dev *dev, struct vhost_virtqueue *vq) @@ -1518,6 +1548,7 @@ bool vhost_enable_notify(struct vhost_dev *dev, struct vhost_virtqueue *vq) return avail_idx != vq->avail_idx; } +EXPORT_SYMBOL_GPL(vhost_enable_notify); /* We don't need to be notified again. */ void vhost_disable_notify(struct vhost_dev *dev, struct vhost_virtqueue *vq) @@ -1534,3 +1565,21 @@ void vhost_disable_notify(struct vhost_dev *dev, struct vhost_virtqueue *vq) &vq->used->flags, r); } } +EXPORT_SYMBOL_GPL(vhost_disable_notify); + +static int __init vhost_init(void) +{ + return 0; +} + +static void __exit vhost_exit(void) +{ +} + +module_init(vhost_init); +module_exit(vhost_exit); + +MODULE_VERSION("0.0.1"); +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Michael S. Tsirkin"); +MODULE_DESCRIPTION("Host kernel accelerator for virtio"); |