search for: virtio_balloon_pfns_per_page_bmap

...AGES 256 #define VIRTBALLOON_OOM_NOTIFY_PRIORITY 80 +/* The size of one page_bmap used to record inflated/deflated pages. */ +#define VIRTIO_BALLOON_PAGE_BMAP_SIZE (8 * PAGE_SIZE) +/* + * Callulates how many pfns can a page_bmap record. A bit corresponds to a + * page of PAGE_SIZE. + */ +#define VIRTIO_BALLOON_PFNS_PER_PAGE_BMAP \ + (VIRTIO_BALLOON_PAGE_BMAP_SIZE * BITS_PER_BYTE) + +/* The number of page_bmap to allocate by default. */ +#define VIRTIO_BALLOON_PAGE_BMAP_DEFAULT_NUM 1 +/* The maximum number of page_bmap that can be allocated. */ +#define VIRTIO_BALLOON_PAGE_BMAP_MAX_NUM 32 + static int oom_pages = OOM_VBALL...

..._PRIORITY 80 > > +/* The size of one page_bmap used to record inflated/deflated pages. */ > +#define VIRTIO_BALLOON_PAGE_BMAP_SIZE (8 * PAGE_SIZE) > +/* > + * Callulates how many pfns can a page_bmap record. A bit corresponds to a > + * page of PAGE_SIZE. > + */ > +#define VIRTIO_BALLOON_PFNS_PER_PAGE_BMAP \ > + (VIRTIO_BALLOON_PAGE_BMAP_SIZE * BITS_PER_BYTE) > + > +/* The number of page_bmap to allocate by default. */ > +#define VIRTIO_BALLOON_PAGE_BMAP_DEFAULT_NUM 1 > +/* The maximum number of page_bmap that can be allocated. */ > +#define VIRTIO_BALLOON_PAGE_BMAP_MAX_NUM 32 >...

..._PRIORITY 80 > > +/* The size of one page_bmap used to record inflated/deflated pages. */ > +#define VIRTIO_BALLOON_PAGE_BMAP_SIZE (8 * PAGE_SIZE) > +/* > + * Callulates how many pfns can a page_bmap record. A bit corresponds to a > + * page of PAGE_SIZE. > + */ > +#define VIRTIO_BALLOON_PFNS_PER_PAGE_BMAP \ > + (VIRTIO_BALLOON_PAGE_BMAP_SIZE * BITS_PER_BYTE) > + > +/* The number of page_bmap to allocate by default. */ > +#define VIRTIO_BALLOON_PAGE_BMAP_DEFAULT_NUM 1 > +/* The maximum number of page_bmap that can be allocated. */ > +#define VIRTIO_BALLOON_PAGE_BMAP_MAX_NUM 32 >...

...uot;); static struct vfsmount *balloon_mnt; #endif +/* The size of one page_bmap used to record inflated/deflated pages. */ +#define VIRTIO_BALLOON_PAGE_BMAP_SIZE (8 * PAGE_SIZE) +/* + * Callulates how many pfns can a page_bmap record. A bit corresponds to a + * page of PAGE_SIZE. + */ +#define VIRTIO_BALLOON_PFNS_PER_PAGE_BMAP \ + (VIRTIO_BALLOON_PAGE_BMAP_SIZE * BITS_PER_BYTE) + +/* The number of page_bmap to allocate by default. */ +#define VIRTIO_BALLOON_PAGE_BMAP_DEFAULT_NUM 1 +/* The maximum number of page_bmap that can be allocated. */ +#define VIRTIO_BALLOON_PAGE_BMAP_MAX_NUM 32 + +/* + * QEMU virtio implementatio...

...lated/deflated pages. */ > +#define VIRTIO_BALLOON_PAGE_BMAP_SIZE (8 * PAGE_SIZE) At this size, you probably want alloc_pages to avoid kmalloc overhead. > +/* > + * Callulates how many pfns can a page_bmap record. A bit corresponds to a > + * page of PAGE_SIZE. > + */ > +#define VIRTIO_BALLOON_PFNS_PER_PAGE_BMAP \ > + (VIRTIO_BALLOON_PAGE_BMAP_SIZE * BITS_PER_BYTE) > + > +/* The number of page_bmap to allocate by default. */ > +#define VIRTIO_BALLOON_PAGE_BMAP_DEFAULT_NUM 1 It's not by default, it's at probe time, right? > +/* The maximum number of page_bmap that can be allocated....

...lated/deflated pages. */ > +#define VIRTIO_BALLOON_PAGE_BMAP_SIZE (8 * PAGE_SIZE) At this size, you probably want alloc_pages to avoid kmalloc overhead. > +/* > + * Callulates how many pfns can a page_bmap record. A bit corresponds to a > + * page of PAGE_SIZE. > + */ > +#define VIRTIO_BALLOON_PFNS_PER_PAGE_BMAP \ > + (VIRTIO_BALLOON_PAGE_BMAP_SIZE * BITS_PER_BYTE) > + > +/* The number of page_bmap to allocate by default. */ > +#define VIRTIO_BALLOON_PAGE_BMAP_DEFAULT_NUM 1 It's not by default, it's at probe time, right? > +/* The maximum number of page_bmap that can be allocated....

This patch series implements the follow two things: 1) Optimization of balloon page transfer: instead of transferring balloon pages to host one by one, the new mechanism transfers them in chunks. 2) A mechanism to report info of guest unused pages: the pages have been unused at some time between when host sent command and when guest reported them. Host uses that by tracking memory changes and

This patch series implements the follow two things: 1) Optimization of balloon page transfer: instead of transferring balloon pages to host one by one, the new mechanism transfers them in chunks. 2) A mechanism to report info of guest unused pages: the pages have been unused at some time between when host sent command and when guest reported them. Host uses that by tracking memory changes and

This patch series enhances the existing virtio-balloon with the following new features: 1) fast ballooning: transfer ballooned pages between the guest and host in chunks, instead of one by one; and 2) cmdq: a new virtqueue to send commands between the device and driver. Currently, it supports commands to report memory stats (replace the old statq mechanism) and report guest unused pages. Liang Li

This patch series enhances the existing virtio-balloon with the following new features: 1) fast ballooning: transfer ballooned pages between the guest and host in chunks, instead of one by one; and 2) cmdq: a new virtqueue to send commands between the device and driver. Currently, it supports commands to report memory stats (replace the old statq mechanism) and report guest unused pages. Liang Li

...indirect desc table, and uses a entry (i.e. vring_desc) to describe a chunk. This avoids the overhead of kmalloc() the indirect table. >> +/* >> + * Callulates how many pfns can a page_bmap record. A bit corresponds to a >> + * page of PAGE_SIZE. >> + */ >> +#define VIRTIO_BALLOON_PFNS_PER_PAGE_BMAP \ >> + (VIRTIO_BALLOON_PAGE_BMAP_SIZE * BITS_PER_BYTE) >> + >> +/* The number of page_bmap to allocate by default. */ >> +#define VIRTIO_BALLOON_PAGE_BMAP_DEFAULT_NUM 1 > It's not by default, it's at probe time, right? It is the number of page bitmap being kept th...