search for: balloon_mapping_free

...n"); if (IS_ERR(vb->thread)) { err = PTR_ERR(vb->thread); @@ -483,6 +526,8 @@ static int virtballoon_probe(struct virtio_device *vdev) return 0; out_del_vqs: + unregister_oom_notifier(&vb->nb); +out_oom_notify: vdev->config->del_vqs(vdev); out_free_vb_mapping: balloon_mapping_free(vb_mapping); @@ -511,6 +556,7 @@ static void virtballoon_remove(struct virtio_device *vdev) { struct virtio_balloon *vb = vdev->priv; + unregister_oom_notifier(&vb->nb); kthread_stop(vb->thread); remove_common(vb); balloon_mapping_free(vb->vb_dev_info->mapping); -- 1....

...n"); if (IS_ERR(vb->thread)) { err = PTR_ERR(vb->thread); @@ -483,6 +526,8 @@ static int virtballoon_probe(struct virtio_device *vdev) return 0; out_del_vqs: + unregister_oom_notifier(&vb->nb); +out_oom_notify: vdev->config->del_vqs(vdev); out_free_vb_mapping: balloon_mapping_free(vb_mapping); @@ -511,6 +556,7 @@ static void virtballoon_remove(struct virtio_device *vdev) { struct virtio_balloon *vb = vdev->priv; + unregister_oom_notifier(&vb->nb); kthread_stop(vb->thread); remove_common(vb); balloon_mapping_free(vb->vb_dev_info->mapping); -- 1....

Excessive virtio_balloon inflation can cause invocation of OOM-killer, when Linux is under severe memory pressure. Various mechanisms are responsible for correct virtio_balloon memory management. Nevertheless it is often the case that these control tools does not have enough time to react on fast changing memory load. As a result OS runs out of memory and invokes OOM-killer. The balancing of

Excessive virtio_balloon inflation can cause invocation of OOM-killer, when Linux is under severe memory pressure. Various mechanisms are responsible for correct virtio_balloon memory management. Nevertheless it is often the case that these control tools does not have enough time to react on fast changing memory load. As a result OS runs out of memory and invokes OOM-killer. The balancing of

...wpage, > struct page *page, enum migrate_mode mode); > > +extern struct address_space > +*balloon_mapping_alloc(struct balloon_dev_info *b_dev_info, > + const struct address_space_operations *a_ops); > + > +static inline void balloon_mapping_free(struct address_space *balloon_mapping) > +{ > + kfree(balloon_mapping); > +} > + > /* > - * __is_movable_balloon_page - helper to perform @page PageBalloon tests > + * __is_movable_balloon_page - helper to perform @page PageMigratable tests > */ > static inline...

...wpage, > struct page *page, enum migrate_mode mode); > > +extern struct address_space > +*balloon_mapping_alloc(struct balloon_dev_info *b_dev_info, > + const struct address_space_operations *a_ops); > + > +static inline void balloon_mapping_free(struct address_space *balloon_mapping) > +{ > + kfree(balloon_mapping); > +} > + > /* > - * __is_movable_balloon_page - helper to perform @page PageBalloon tests > + * __is_movable_balloon_page - helper to perform @page PageMigratable tests > */ > static inline...

...oon_page_migrate(struct address_space *mapping, + struct page *newpage, + struct page *page, + enum migrate_mode mode); + +extern struct address_space +*balloon_mapping_alloc(struct balloon_dev_info *b_dev_info, + const struct address_space_operations *a_ops); + +static inline void balloon_mapping_free(struct address_space *balloon_mapping) +{ + kfree(balloon_mapping); +} /* * __is_movable_balloon_page - helper to perform @page PageBalloon tests @@ -123,6 +136,7 @@ static inline bool isolated_balloon_page(struct page *page) static inline void balloon_page_insert(struct balloon_dev_info *bal...

...oon_page_migrate(struct address_space *mapping, + struct page *newpage, + struct page *page, + enum migrate_mode mode); + +extern struct address_space +*balloon_mapping_alloc(struct balloon_dev_info *b_dev_info, + const struct address_space_operations *a_ops); + +static inline void balloon_mapping_free(struct address_space *balloon_mapping) +{ + kfree(balloon_mapping); +} /* * __is_movable_balloon_page - helper to perform @page PageBalloon tests @@ -123,6 +136,7 @@ static inline bool isolated_balloon_page(struct page *page) static inline void balloon_page_insert(struct balloon_dev_info *bal...

Memory fragmentation introduced by ballooning might reduce significantly the number of 2MB contiguous memory blocks that can be used within a guest, thus imposing performance penalties associated with the reduced number of transparent huge pages that could be used by the guest workload. This patch-set follows the main idea discussed at 2012 LSFMMS session: "Ballooning for transparent huge

Memory fragmentation introduced by ballooning might reduce significantly the number of 2MB contiguous memory blocks that can be used within a guest, thus imposing performance penalties associated with the reduced number of transparent huge pages that could be used by the guest workload. This patch-set follows the main idea discussed at 2012 LSFMMS session: "Ballooning for transparent huge

...balloon_page_migrate(struct address_space *mapping, + struct page *newpage, struct page *page, enum migrate_mode mode); +extern struct address_space +*balloon_mapping_alloc(struct balloon_dev_info *b_dev_info, + const struct address_space_operations *a_ops); + +static inline void balloon_mapping_free(struct address_space *balloon_mapping) +{ + kfree(balloon_mapping); +} + /* - * __is_movable_balloon_page - helper to perform @page PageBalloon tests + * __is_movable_balloon_page - helper to perform @page PageMigratable tests */ static inline bool __is_movable_balloon_page(struct page *page)...

Memory fragmentation introduced by ballooning might reduce significantly the number of 2MB contiguous memory blocks that can be used within a guest, thus imposing performance penalties associated with the reduced number of transparent huge pages that could be used by the guest workload. This patch-set follows the main idea discussed at 2012 LSFMMS session: "Ballooning for transparent huge

Memory fragmentation introduced by ballooning might reduce significantly the number of 2MB contiguous memory blocks that can be used within a guest, thus imposing performance penalties associated with the reduced number of transparent huge pages that could be used by the guest workload. This patch-set follows the main idea discussed at 2012 LSFMMS session: "Ballooning for transparent huge

...struct page *page, enum migrate_mode mode); >> >> +extern struct address_space >> +*balloon_mapping_alloc(struct balloon_dev_info *b_dev_info, >> + const struct address_space_operations *a_ops); >> + >> +static inline void balloon_mapping_free(struct address_space *balloon_mapping) >> +{ >> + kfree(balloon_mapping); >> +} >> + >> /* >> - * __is_movable_balloon_page - helper to perform @page PageBalloon tests >> + * __is_movable_balloon_page - helper to perform @page PageMigratable tests &...

...goto out_del_vqs; } + INIT_WORK(&vb->wq_work, balloon); return 0; @@ -508,7 +508,7 @@ static void virtballoon_remove(struct virtio_device *vdev) { struct virtio_balloon *vb = vdev->priv; - kthread_stop(vb->thread); + destroy_workqueue(vb->wq); remove_common(vb); balloon_mapping_free(vb->vb_dev_info->mapping); balloon_devinfo_free(vb->vb_dev_info); @@ -521,7 +521,7 @@ static int virtballoon_freeze(struct virtio_device *vdev) struct virtio_balloon *vb = vdev->priv; /* - * The kthread is already frozen by the PM core before this + * The workqueue is already...

...goto out_del_vqs; } + INIT_WORK(&vb->wq_work, balloon); return 0; @@ -508,7 +508,7 @@ static void virtballoon_remove(struct virtio_device *vdev) { struct virtio_balloon *vb = vdev->priv; - kthread_stop(vb->thread); + destroy_workqueue(vb->wq); remove_common(vb); balloon_mapping_free(vb->vb_dev_info->mapping); balloon_devinfo_free(vb->vb_dev_info); @@ -521,7 +521,7 @@ static int virtballoon_freeze(struct virtio_device *vdev) struct virtio_balloon *vb = vdev->priv; /* - * The kthread is already frozen by the PM core before this + * The workqueue is already...

...g, > + struct page *newpage, > + struct page *page, > + enum migrate_mode mode); > + > +extern struct address_space > +*balloon_mapping_alloc(struct balloon_dev_info *b_dev_info, > + const struct address_space_operations *a_ops); > + > +static inline void balloon_mapping_free(struct address_space *balloon_mapping) > +{ > + kfree(balloon_mapping); > +} > > /* > * __is_movable_balloon_page - helper to perform @page PageBalloon tests > @@ -123,6 +136,7 @@ static inline bool isolated_balloon_page(struct page *page) > static inline void balloon_...

Hello, This series try to enable migration of non-LRU pages, such as driver's page. My ARM-based platform occured severe fragmentation problem after long-term (several days) test. Sometimes even order-3 page allocation failed. It has memory size 512MB ~ 1024MB. 30% ~ 40% memory is consumed for graphic processing and 20~30 memory is reserved for zram. I found that many pages of GPU driver

Hello, This series try to enable migration of non-LRU pages, such as driver's page. My ARM-based platform occured severe fragmentation problem after long-term (several days) test. Sometimes even order-3 page allocation failed. It has memory size 512MB ~ 1024MB. 30% ~ 40% memory is consumed for graphic processing and 20~30 memory is reserved for zram. I found that many pages of GPU driver