Displaying 20 results from an estimated 23 matches for "bmap_count".
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2017 Jan 20
1
[PATCH v6 kernel 3/5] virtio-balloon: speed up inflate/deflate process
* Liang Li (liang.z.li at intel.com) wrote:
<snip>
> +static void free_extended_page_bitmap(struct virtio_balloon *vb)
> +{
> + int i, bmap_count = vb->nr_page_bmap;
> +
> + for (i = 1; i < bmap_count; i++) {
> + kfree(vb->page_bitmap[i]);
> + vb->page_bitmap[i] = NULL;
> + vb->nr_page_bmap--;
> + }
> +}
> +
> +static void kfree_page_bitmap(struct virtio_balloon *vb)
> +{
> + int i;
> +
&...
2017 Jan 20
1
[PATCH v6 kernel 3/5] virtio-balloon: speed up inflate/deflate process
* Liang Li (liang.z.li at intel.com) wrote:
<snip>
> +static void free_extended_page_bitmap(struct virtio_balloon *vb)
> +{
> + int i, bmap_count = vb->nr_page_bmap;
> +
> + for (i = 1; i < bmap_count; i++) {
> + kfree(vb->page_bitmap[i]);
> + vb->page_bitmap[i] = NULL;
> + vb->nr_page_bmap--;
> + }
> +}
> +
> +static void kfree_page_bitmap(struct virtio_balloon *vb)
> +{
> + int i;
> +
&...
2016 Oct 25
1
[RESEND PATCH v3 kernel 4/7] virtio-balloon: speed up inflate/deflate process
...; +++ b/drivers/virtio/virtio_balloon.c
> @@ -42,6 +42,10 @@
> #define OOM_VBALLOON_DEFAULT_PAGES 256
> #define VIRTBALLOON_OOM_NOTIFY_PRIORITY 80
>
> +#define BALLOON_BMAP_SIZE (8 * PAGE_SIZE)
> +#define PFNS_PER_BMAP (BALLOON_BMAP_SIZE * BITS_PER_BYTE)
> +#define BALLOON_BMAP_COUNT 32
> +
> static int oom_pages = OOM_VBALLOON_DEFAULT_PAGES;
> module_param(oom_pages, int, S_IRUSR | S_IWUSR);
> MODULE_PARM_DESC(oom_pages, "pages to free on OOM");
> @@ -67,6 +71,13 @@ struct virtio_balloon {
>
> /* Number of balloon pages we've told the...
2016 Oct 25
1
[RESEND PATCH v3 kernel 4/7] virtio-balloon: speed up inflate/deflate process
...; +++ b/drivers/virtio/virtio_balloon.c
> @@ -42,6 +42,10 @@
> #define OOM_VBALLOON_DEFAULT_PAGES 256
> #define VIRTBALLOON_OOM_NOTIFY_PRIORITY 80
>
> +#define BALLOON_BMAP_SIZE (8 * PAGE_SIZE)
> +#define PFNS_PER_BMAP (BALLOON_BMAP_SIZE * BITS_PER_BYTE)
> +#define BALLOON_BMAP_COUNT 32
> +
> static int oom_pages = OOM_VBALLOON_DEFAULT_PAGES;
> module_param(oom_pages, int, S_IRUSR | S_IWUSR);
> MODULE_PARM_DESC(oom_pages, "pages to free on OOM");
> @@ -67,6 +71,13 @@ struct virtio_balloon {
>
> /* Number of balloon pages we've told the...
2017 Mar 10
0
[virtio-dev] Re: [PATCH v7 kernel 3/5] virtio-balloon: implementation of VIRTIO_BALLOON_F_CHUNK_TRANSFER
...tio_balloon.c
>> @@ -42,6 +42,10 @@
>> #define OOM_VBALLOON_DEFAULT_PAGES 256
>> #define VIRTBALLOON_OOM_NOTIFY_PRIORITY 80
>>
>> +#define PAGE_BMAP_SIZE (8 * PAGE_SIZE)
>> +#define PFNS_PER_PAGE_BMAP (PAGE_BMAP_SIZE * BITS_PER_BYTE)
>> +#define PAGE_BMAP_COUNT_MAX 32
>> +
>> static int oom_pages = OOM_VBALLOON_DEFAULT_PAGES;
>> module_param(oom_pages, int, S_IRUSR | S_IWUSR);
>> MODULE_PARM_DESC(oom_pages, "pages to free on OOM");
>> @@ -50,6 +54,16 @@ MODULE_PARM_DESC(oom_pages, "pages to free on OOM&qu...
2016 Aug 08
0
[PATCH v3 kernel 4/7] virtio-balloon: speed up inflate/deflate process
...-- a/drivers/virtio/virtio_balloon.c
+++ b/drivers/virtio/virtio_balloon.c
@@ -42,6 +42,10 @@
#define OOM_VBALLOON_DEFAULT_PAGES 256
#define VIRTBALLOON_OOM_NOTIFY_PRIORITY 80
+#define BALLOON_BMAP_SIZE (8 * PAGE_SIZE)
+#define PFNS_PER_BMAP (BALLOON_BMAP_SIZE * BITS_PER_BYTE)
+#define BALLOON_BMAP_COUNT 32
+
static int oom_pages = OOM_VBALLOON_DEFAULT_PAGES;
module_param(oom_pages, int, S_IRUSR | S_IWUSR);
MODULE_PARM_DESC(oom_pages, "pages to free on OOM");
@@ -67,6 +71,13 @@ struct virtio_balloon {
/* Number of balloon pages we've told the Host we're not using. */
unsi...
2016 Oct 21
0
[RESEND PATCH v3 kernel 4/7] virtio-balloon: speed up inflate/deflate process
...-- a/drivers/virtio/virtio_balloon.c
+++ b/drivers/virtio/virtio_balloon.c
@@ -42,6 +42,10 @@
#define OOM_VBALLOON_DEFAULT_PAGES 256
#define VIRTBALLOON_OOM_NOTIFY_PRIORITY 80
+#define BALLOON_BMAP_SIZE (8 * PAGE_SIZE)
+#define PFNS_PER_BMAP (BALLOON_BMAP_SIZE * BITS_PER_BYTE)
+#define BALLOON_BMAP_COUNT 32
+
static int oom_pages = OOM_VBALLOON_DEFAULT_PAGES;
module_param(oom_pages, int, S_IRUSR | S_IWUSR);
MODULE_PARM_DESC(oom_pages, "pages to free on OOM");
@@ -67,6 +71,13 @@ struct virtio_balloon {
/* Number of balloon pages we've told the Host we're not using. */
unsi...
2017 Mar 08
3
[PATCH v7 kernel 3/5] virtio-balloon: implementation of VIRTIO_BALLOON_F_CHUNK_TRANSFER
...c
> +++ b/drivers/virtio/virtio_balloon.c
> @@ -42,6 +42,10 @@
> #define OOM_VBALLOON_DEFAULT_PAGES 256
> #define VIRTBALLOON_OOM_NOTIFY_PRIORITY 80
>
> +#define PAGE_BMAP_SIZE (8 * PAGE_SIZE)
> +#define PFNS_PER_PAGE_BMAP (PAGE_BMAP_SIZE * BITS_PER_BYTE)
> +#define PAGE_BMAP_COUNT_MAX 32
> +
> static int oom_pages = OOM_VBALLOON_DEFAULT_PAGES;
> module_param(oom_pages, int, S_IRUSR | S_IWUSR);
> MODULE_PARM_DESC(oom_pages, "pages to free on OOM");
> @@ -50,6 +54,16 @@ MODULE_PARM_DESC(oom_pages, "pages to free on OOM");
> static stru...
2017 Mar 08
3
[PATCH v7 kernel 3/5] virtio-balloon: implementation of VIRTIO_BALLOON_F_CHUNK_TRANSFER
...c
> +++ b/drivers/virtio/virtio_balloon.c
> @@ -42,6 +42,10 @@
> #define OOM_VBALLOON_DEFAULT_PAGES 256
> #define VIRTBALLOON_OOM_NOTIFY_PRIORITY 80
>
> +#define PAGE_BMAP_SIZE (8 * PAGE_SIZE)
> +#define PFNS_PER_PAGE_BMAP (PAGE_BMAP_SIZE * BITS_PER_BYTE)
> +#define PAGE_BMAP_COUNT_MAX 32
> +
> static int oom_pages = OOM_VBALLOON_DEFAULT_PAGES;
> module_param(oom_pages, int, S_IRUSR | S_IWUSR);
> MODULE_PARM_DESC(oom_pages, "pages to free on OOM");
> @@ -50,6 +54,16 @@ MODULE_PARM_DESC(oom_pages, "pages to free on OOM");
> static stru...
2016 Dec 21
0
[PATCH v6 kernel 3/5] virtio-balloon: speed up inflate/deflate process
...-- a/drivers/virtio/virtio_balloon.c
+++ b/drivers/virtio/virtio_balloon.c
@@ -42,6 +42,10 @@
#define OOM_VBALLOON_DEFAULT_PAGES 256
#define VIRTBALLOON_OOM_NOTIFY_PRIORITY 80
+#define BALLOON_BMAP_SIZE (8 * PAGE_SIZE)
+#define PFNS_PER_BMAP (BALLOON_BMAP_SIZE * BITS_PER_BYTE)
+#define BALLOON_BMAP_COUNT 32
+
static int oom_pages = OOM_VBALLOON_DEFAULT_PAGES;
module_param(oom_pages, int, S_IRUSR | S_IWUSR);
MODULE_PARM_DESC(oom_pages, "pages to free on OOM");
@@ -67,6 +71,20 @@ struct virtio_balloon {
/* Number of balloon pages we've told the Host we're not using. */
unsi...
2017 Mar 03
0
[PATCH v7 kernel 3/5] virtio-balloon: implementation of VIRTIO_BALLOON_F_CHUNK_TRANSFER
...644
--- a/drivers/virtio/virtio_balloon.c
+++ b/drivers/virtio/virtio_balloon.c
@@ -42,6 +42,10 @@
#define OOM_VBALLOON_DEFAULT_PAGES 256
#define VIRTBALLOON_OOM_NOTIFY_PRIORITY 80
+#define PAGE_BMAP_SIZE (8 * PAGE_SIZE)
+#define PFNS_PER_PAGE_BMAP (PAGE_BMAP_SIZE * BITS_PER_BYTE)
+#define PAGE_BMAP_COUNT_MAX 32
+
static int oom_pages = OOM_VBALLOON_DEFAULT_PAGES;
module_param(oom_pages, int, S_IRUSR | S_IWUSR);
MODULE_PARM_DESC(oom_pages, "pages to free on OOM");
@@ -50,6 +54,16 @@ MODULE_PARM_DESC(oom_pages, "pages to free on OOM");
static struct vfsmount *balloon_mnt;
#en...
2016 Oct 21
16
[RESEND PATCH v3 kernel 0/7] Extend virtio-balloon for fast (de)inflating & fast live migration
This patch set contains two parts of changes to the virtio-balloon.
One is the change for speeding up the inflating & deflating process,
the main idea of this optimization is to use bitmap to send the page
information to host instead of the PFNs, to reduce the overhead of
virtio data transmission, address translation and madvise(). This can
help to improve the performance by about 85%.
2016 Oct 21
16
[RESEND PATCH v3 kernel 0/7] Extend virtio-balloon for fast (de)inflating & fast live migration
This patch set contains two parts of changes to the virtio-balloon.
One is the change for speeding up the inflating & deflating process,
the main idea of this optimization is to use bitmap to send the page
information to host instead of the PFNs, to reduce the overhead of
virtio data transmission, address translation and madvise(). This can
help to improve the performance by about 85%.
2017 Mar 03
10
[PATCH v7 kernel 0/5] Extend virtio-balloon for fast (de)inflating & fast live migration
Take over this work from Liang.
This patch series implements two optimizations: 1) transfer pages in chuncks
between the guest and host; 1) transfer the guest unused pages to the host so
that they can be skipped to migrate in live migration.
Please check patch 0003 for more details about optimization 1).
For an idle guest with 8GB RAM, optimization 2) can help shorten the total live
migration
2017 Mar 03
10
[PATCH v7 kernel 0/5] Extend virtio-balloon for fast (de)inflating & fast live migration
Take over this work from Liang.
This patch series implements two optimizations: 1) transfer pages in chuncks
between the guest and host; 1) transfer the guest unused pages to the host so
that they can be skipped to migrate in live migration.
Please check patch 0003 for more details about optimization 1).
For an idle guest with 8GB RAM, optimization 2) can help shorten the total live
migration
2016 Dec 21
12
[PATCH v6 kernel 0/5] Extend virtio-balloon for fast (de)inflating & fast live migration
This patch set contains two parts of changes to the virtio-balloon.
One is the change for speeding up the inflating & deflating process,
the main idea of this optimization is to use {pfn|length} to present
the page information instead of the PFNs, to reduce the overhead of
virtio data transmission, address translation and madvise(). This can
help to improve the performance by about 85%.
2016 Dec 21
12
[PATCH v6 kernel 0/5] Extend virtio-balloon for fast (de)inflating & fast live migration
This patch set contains two parts of changes to the virtio-balloon.
One is the change for speeding up the inflating & deflating process,
the main idea of this optimization is to use {pfn|length} to present
the page information instead of the PFNs, to reduce the overhead of
virtio data transmission, address translation and madvise(). This can
help to improve the performance by about 85%.
2016 Nov 02
8
[PATCH kernel v4 0/7] Extend virtio-balloon for fast (de)inflating & fast live migration
This patch set contains two parts of changes to the virtio-balloon.
One is the change for speeding up the inflating & deflating process,
the main idea of this optimization is to use bitmap to send the page
information to host instead of the PFNs, to reduce the overhead of
virtio data transmission, address translation and madvise(). This can
help to improve the performance by about 85%.
2016 Nov 02
8
[PATCH kernel v4 0/7] Extend virtio-balloon for fast (de)inflating & fast live migration
This patch set contains two parts of changes to the virtio-balloon.
One is the change for speeding up the inflating & deflating process,
the main idea of this optimization is to use bitmap to send the page
information to host instead of the PFNs, to reduce the overhead of
virtio data transmission, address translation and madvise(). This can
help to improve the performance by about 85%.
2016 Nov 30
8
[PATCH kernel v5 0/5] Extend virtio-balloon for fast (de)inflating & fast live migration
This patch set contains two parts of changes to the virtio-balloon.
One is the change for speeding up the inflating & deflating process,
the main idea of this optimization is to use bitmap to send the page
information to host instead of the PFNs, to reduce the overhead of
virtio data transmission, address translation and madvise(). This can
help to improve the performance by about 85%.