search for: report_free_page

...tats_vq; > + struct virtqueue *inflate_vq, *deflate_vq, *stats_vq, *free_page_vq; > + > + /* Balloon's own wq for cpu-intensive work items */ > + struct workqueue_struct *balloon_wq; > + /* The free page reporting work item submitted to the balloon wq */ > + struct work_struct report_free_page_work; > > /* The balloon servicing is delegated to a freezable workqueue. */ > struct work_struct update_balloon_stats_work; > @@ -63,6 +68,13 @@ struct virtio_balloon { > spinlock_t stop_update_lock; > bool stop_update; > > + /* Start to report free pages */ &gt...

...tats_vq; > + struct virtqueue *inflate_vq, *deflate_vq, *stats_vq, *free_page_vq; > + > + /* Balloon's own wq for cpu-intensive work items */ > + struct workqueue_struct *balloon_wq; > + /* The free page reporting work item submitted to the balloon wq */ > + struct work_struct report_free_page_work; > > /* The balloon servicing is delegated to a freezable workqueue. */ > struct work_struct update_balloon_stats_work; > @@ -63,6 +68,13 @@ struct virtio_balloon { > spinlock_t stop_update_lock; > bool stop_update; > > + /* Start to report free pages */ &gt...

...ure check, How about if (virtio_has_feature(vb->vdev, VIRTIO_BALLOON_F_FREE_PAGE_VQ)) { virtio_cread(..); if (cmd_id == VIRTIO_BALLOON_FREE_PAGE_REPORT_STOP_ID) { .... } > > >> + if (cmd_id == VIRTIO_BALLOON_FREE_PAGE_REPORT_STOP_ID) { >> + WRITE_ONCE(vb->report_free_page, false); >> + } else if (cmd_id != vb->start_cmd_id) { >> + /* >> + * Host requests to start the reporting by sending a new cmd >> + * id. >> + */ >> + WRITE_ONCE(vb->report_free_page, true); > I don't know why we bother with WRITE_ONCE here....

..._BALLOON_F_FREE_PAGE_VQ)) { > virtio_cread(..); > if (cmd_id == VIRTIO_BALLOON_FREE_PAGE_REPORT_STOP_ID) { > .... > } > that's ok too. > > > > > > > + if (cmd_id == VIRTIO_BALLOON_FREE_PAGE_REPORT_STOP_ID) { > > > + WRITE_ONCE(vb->report_free_page, false); > > > + } else if (cmd_id != vb->start_cmd_id) { > > > + /* > > > + * Host requests to start the reporting by sending a new cmd > > > + * id. > > > + */ > > > + WRITE_ONCE(vb->report_free_page, true); > > I don't...

...tats_vq; > + struct virtqueue *inflate_vq, *deflate_vq, *stats_vq, *free_page_vq; > + > + /* Balloon's own wq for cpu-intensive work items */ > + struct workqueue_struct *balloon_wq; > + /* The free page reporting work item submitted to the balloon wq */ > + struct work_struct report_free_page_work; > > /* The balloon servicing is delegated to a freezable workqueue. */ > struct work_struct update_balloon_stats_work; > @@ -63,6 +68,13 @@ struct virtio_balloon { > spinlock_t stop_update_lock; > bool stop_update; > > + /* Start to report free pages */ &gt...

...tats_vq; > + struct virtqueue *inflate_vq, *deflate_vq, *stats_vq, *free_page_vq; > + > + /* Balloon's own wq for cpu-intensive work items */ > + struct workqueue_struct *balloon_wq; > + /* The free page reporting work item submitted to the balloon wq */ > + struct work_struct report_free_page_work; > > /* The balloon servicing is delegated to a freezable workqueue. */ > struct work_struct update_balloon_stats_work; > @@ -63,6 +68,13 @@ struct virtio_balloon { > spinlock_t stop_update_lock; > bool stop_update; > > + /* Start to report free pages */ &gt...

...tats_vq; > + struct virtqueue *inflate_vq, *deflate_vq, *stats_vq, *free_page_vq; > + > + /* Balloon's own wq for cpu-intensive work items */ > + struct workqueue_struct *balloon_wq; > + /* The free page reporting work item submitted to the balloon wq */ > + struct work_struct report_free_page_work; > > /* The balloon servicing is delegated to a freezable workqueue. */ > struct work_struct update_balloon_stats_work; > @@ -63,6 +75,13 @@ struct virtio_balloon { > spinlock_t stop_update_lock; > bool stop_update; > > + /* Start to report free pages */ &gt...

...tats_vq; > + struct virtqueue *inflate_vq, *deflate_vq, *stats_vq, *free_page_vq; > + > + /* Balloon's own wq for cpu-intensive work items */ > + struct workqueue_struct *balloon_wq; > + /* The free page reporting work item submitted to the balloon wq */ > + struct work_struct report_free_page_work; > > /* The balloon servicing is delegated to a freezable workqueue. */ > struct work_struct update_balloon_stats_work; > @@ -63,6 +75,13 @@ struct virtio_balloon { > spinlock_t stop_update_lock; > bool stop_update; > > + /* Start to report free pages */ &gt...

...tats_vq; > + struct virtqueue *inflate_vq, *deflate_vq, *stats_vq, *free_page_vq; > + > + /* Balloon's own wq for cpu-intensive work items */ > + struct workqueue_struct *balloon_wq; > + /* The free page reporting work item submitted to the balloon wq */ > + struct work_struct report_free_page_work; > > /* The balloon servicing is delegated to a freezable workqueue. */ > struct work_struct update_balloon_stats_work; > @@ -65,6 +70,10 @@ struct virtio_balloon { > spinlock_t stop_update_lock; > bool stop_update; > > + /* Stop reporting free pages *...

...tats_vq; > + struct virtqueue *inflate_vq, *deflate_vq, *stats_vq, *free_page_vq; > + > + /* Balloon's own wq for cpu-intensive work items */ > + struct workqueue_struct *balloon_wq; > + /* The free page reporting work item submitted to the balloon wq */ > + struct work_struct report_free_page_work; > > /* The balloon servicing is delegated to a freezable workqueue. */ > struct work_struct update_balloon_stats_work; > @@ -65,6 +70,10 @@ struct virtio_balloon { > spinlock_t stop_update_lock; > bool stop_update; > > + /* Stop reporting free pages *...

...e *inflate_vq, *deflate_vq, *stats_vq; + struct virtqueue *inflate_vq, *deflate_vq, *stats_vq, *free_page_vq; + + /* Balloon's own wq for cpu-intensive work items */ + struct workqueue_struct *balloon_wq; + /* The free page reporting work item submitted to the balloon wq */ + struct work_struct report_free_page_work; /* The balloon servicing is delegated to a freezable workqueue. */ struct work_struct update_balloon_stats_work; @@ -63,6 +68,13 @@ struct virtio_balloon { spinlock_t stop_update_lock; bool stop_update; + /* Start to report free pages */ + bool report_free_page; + /* Stores the cm...

This patch series is separated from the previous "Virtio-balloon Enhancement" series. The new feature, VIRTIO_BALLOON_F_FREE_PAGE_VQ, implemented by this series enables the virtio-balloon driver to report hints of guest free pages to the host. It can be used to accelerate live migration of VMs. Here is an introduction of this usage: Live migration needs to transfer the VM's memory

This patch series is separated from the previous "Virtio-balloon Enhancement" series. The new feature, VIRTIO_BALLOON_F_FREE_PAGE_VQ, implemented by this series enables the virtio-balloon driver to report hints of guest free pages to the host. It can be used to accelerate live migration of VMs. Here is an introduction of this usage: Live migration needs to transfer the VM's memory

...e *inflate_vq, *deflate_vq, *stats_vq; + struct virtqueue *inflate_vq, *deflate_vq, *stats_vq, *free_page_vq; + + /* Balloon's own wq for cpu-intensive work items */ + struct workqueue_struct *balloon_wq; + /* The free page reporting work item submitted to the balloon wq */ + struct work_struct report_free_page_work; /* The balloon servicing is delegated to a freezable workqueue. */ struct work_struct update_balloon_stats_work; @@ -63,6 +75,13 @@ struct virtio_balloon { spinlock_t stop_update_lock; bool stop_update; + /* Start to report free pages */ + bool report_free_page; + /* Stores the cm...

...gt; 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c > index 035bd3a..6ac4cff 100644 > --- a/drivers/virtio/virtio_balloon.c > +++ b/drivers/virtio/virtio_balloon.c > @@ -652,7 +652,9 @@ static void report_free_page(struct work_struct *work) > /* Start by sending the obtained cmd id to the host with an outbuf */ > send_one_desc(vb, vb->free_page_vq, virt_to_phys(&vb->start_cmd_id), > sizeof(uint32_t), false, true, false); > - walk_free_mem_block(vb, 0, &virtio_balloon_sen...

...gt; 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c > index 035bd3a..6ac4cff 100644 > --- a/drivers/virtio/virtio_balloon.c > +++ b/drivers/virtio/virtio_balloon.c > @@ -652,7 +652,9 @@ static void report_free_page(struct work_struct *work) > /* Start by sending the obtained cmd id to the host with an outbuf */ > send_one_desc(vb, vb->free_page_vq, virt_to_phys(&vb->start_cmd_id), > sizeof(uint32_t), false, true, false); > - walk_free_mem_block(vb, 0, &virtio_balloon_sen...

This patch series is separated from the previous "Virtio-balloon Enhancement" series. The new feature, VIRTIO_BALLOON_F_FREE_PAGE_VQ, implemented by this series enables the virtio-balloon driver to report hints of guest free pages to the host. It can be used to accelerate live migration of VMs. Here is an introduction of this usage: Live migration needs to transfer the VM's memory

...e *inflate_vq, *deflate_vq, *stats_vq; + struct virtqueue *inflate_vq, *deflate_vq, *stats_vq, *free_page_vq; + + /* Balloon's own wq for cpu-intensive work items */ + struct workqueue_struct *balloon_wq; + /* The free page reporting work item submitted to the balloon wq */ + struct work_struct report_free_page_work; /* The balloon servicing is delegated to a freezable workqueue. */ struct work_struct update_balloon_stats_work; @@ -63,6 +75,13 @@ struct virtio_balloon { spinlock_t stop_update_lock; bool stop_update; + /* Start to report free pages */ + bool report_free_page; + /* Stores the cm...

...ct virtqueue *inflate_vq, *deflate_vq, *stats_vq, *free_page_vq; >> + >> + /* Balloon's own wq for cpu-intensive work items */ >> + struct workqueue_struct *balloon_wq; >> + /* The free page reporting work item submitted to the balloon wq */ >> + struct work_struct report_free_page_work; >> >> /* The balloon servicing is delegated to a freezable workqueue. */ >> struct work_struct update_balloon_stats_work; >> @@ -63,6 +68,13 @@ struct virtio_balloon { >> spinlock_t stop_update_lock; >> bool stop_update; >> >>...

...tats_vq; > + struct virtqueue *inflate_vq, *deflate_vq, *stats_vq, *free_page_vq; > + > + /* Balloon's own wq for cpu-intensive work items */ > + struct workqueue_struct *balloon_wq; > + /* The free page reporting work item submitted to the balloon wq */ > + struct work_struct report_free_page_work; > > /* The balloon servicing is delegated to a freezable workqueue. */ > struct work_struct update_balloon_stats_work; > @@ -63,6 +75,13 @@ struct virtio_balloon { > spinlock_t stop_update_lock; > bool stop_update; > > + /* Start to report free pages */ &gt...