* [PATCH] virtio_balloon: export huge page allocation statistics
@ 2018-02-17 5:44 Jonathan Helman
2018-02-27 15:20 ` Michael S. Tsirkin
0 siblings, 1 reply; 3+ messages in thread
From: Jonathan Helman @ 2018-02-17 5:44 UTC (permalink / raw)
To: mst, jasowang, virtualization; +Cc: linux-kernel, Jonathan Helman
Export statistics for successful and failed huge page allocations
from the virtio balloon driver. These 2 stats come directly from
the vm_events HTLB_BUDDY_PGALLOC and HTLB_BUDDY_PGALLOC_FAIL.
Signed-off-by: Jonathan Helman <jonathan.helman@oracle.com>
---
drivers/virtio/virtio_balloon.c | 6 ++++++
include/uapi/linux/virtio_balloon.h | 4 +++-
2 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c
index dfe5684..6b237e3 100644
--- a/drivers/virtio/virtio_balloon.c
+++ b/drivers/virtio/virtio_balloon.c
@@ -272,6 +272,12 @@ static unsigned int update_balloon_stats(struct virtio_balloon *vb)
pages_to_bytes(events[PSWPOUT]));
update_stat(vb, idx++, VIRTIO_BALLOON_S_MAJFLT, events[PGMAJFAULT]);
update_stat(vb, idx++, VIRTIO_BALLOON_S_MINFLT, events[PGFAULT]);
+#ifdef CONFIG_HUGETLB_PAGE
+ update_stat(vb, idx++, VIRTIO_BALLOON_S_HTLB_PGALLOC,
+ events[HTLB_BUDDY_PGALLOC]);
+ update_stat(vb, idx++, VIRTIO_BALLOON_S_HTLB_PGFAIL,
+ events[HTLB_BUDDY_PGALLOC_FAIL]);
+#endif
#endif
update_stat(vb, idx++, VIRTIO_BALLOON_S_MEMFREE,
pages_to_bytes(i.freeram));
diff --git a/include/uapi/linux/virtio_balloon.h b/include/uapi/linux/virtio_balloon.h
index 4e8b830..e3e8071 100644
--- a/include/uapi/linux/virtio_balloon.h
+++ b/include/uapi/linux/virtio_balloon.h
@@ -53,7 +53,9 @@ struct virtio_balloon_config {
#define VIRTIO_BALLOON_S_MEMTOT 5 /* Total amount of memory */
#define VIRTIO_BALLOON_S_AVAIL 6 /* Available memory as in /proc */
#define VIRTIO_BALLOON_S_CACHES 7 /* Disk caches */
-#define VIRTIO_BALLOON_S_NR 8
+#define VIRTIO_BALLOON_S_HTLB_PGALLOC 8 /* Number of htlb pgalloc successes */
+#define VIRTIO_BALLOON_S_HTLB_PGFAIL 9 /* Number of htlb pgalloc failures */
+#define VIRTIO_BALLOON_S_NR 10
/*
* Memory statistics structure.
--
1.8.3.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] virtio_balloon: export huge page allocation statistics
2018-02-17 5:44 [PATCH] virtio_balloon: export huge page allocation statistics Jonathan Helman
@ 2018-02-27 15:20 ` Michael S. Tsirkin
2018-03-02 22:16 ` Jonathan Helman
0 siblings, 1 reply; 3+ messages in thread
From: Michael S. Tsirkin @ 2018-02-27 15:20 UTC (permalink / raw)
To: Jonathan Helman; +Cc: jasowang, virtualization, linux-kernel
On Fri, Feb 16, 2018 at 09:44:32PM -0800, Jonathan Helman wrote:
> Export statistics for successful and failed huge page allocations
> from the virtio balloon driver. These 2 stats come directly from
> the vm_events HTLB_BUDDY_PGALLOC and HTLB_BUDDY_PGALLOC_FAIL.
> Signed-off-by: Jonathan Helman <jonathan.helman@oracle.com>
Any host/guest intergace changes need to be copied to
the virtio TC mailing list (subscriber-only, sorry about that):
virtio-dev@lists.oasis-open.org
> ---
> drivers/virtio/virtio_balloon.c | 6 ++++++
> include/uapi/linux/virtio_balloon.h | 4 +++-
> 2 files changed, 9 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c
> index dfe5684..6b237e3 100644
> --- a/drivers/virtio/virtio_balloon.c
> +++ b/drivers/virtio/virtio_balloon.c
> @@ -272,6 +272,12 @@ static unsigned int update_balloon_stats(struct virtio_balloon *vb)
> pages_to_bytes(events[PSWPOUT]));
> update_stat(vb, idx++, VIRTIO_BALLOON_S_MAJFLT, events[PGMAJFAULT]);
> update_stat(vb, idx++, VIRTIO_BALLOON_S_MINFLT, events[PGFAULT]);
> +#ifdef CONFIG_HUGETLB_PAGE
> + update_stat(vb, idx++, VIRTIO_BALLOON_S_HTLB_PGALLOC,
> + events[HTLB_BUDDY_PGALLOC]);
> + update_stat(vb, idx++, VIRTIO_BALLOON_S_HTLB_PGFAIL,
> + events[HTLB_BUDDY_PGALLOC_FAIL]);
> +#endif
> #endif
> update_stat(vb, idx++, VIRTIO_BALLOON_S_MEMFREE,
> pages_to_bytes(i.freeram));
> diff --git a/include/uapi/linux/virtio_balloon.h b/include/uapi/linux/virtio_balloon.h
> index 4e8b830..e3e8071 100644
> --- a/include/uapi/linux/virtio_balloon.h
> +++ b/include/uapi/linux/virtio_balloon.h
> @@ -53,7 +53,9 @@ struct virtio_balloon_config {
> #define VIRTIO_BALLOON_S_MEMTOT 5 /* Total amount of memory */
> #define VIRTIO_BALLOON_S_AVAIL 6 /* Available memory as in /proc */
> #define VIRTIO_BALLOON_S_CACHES 7 /* Disk caches */
> -#define VIRTIO_BALLOON_S_NR 8
> +#define VIRTIO_BALLOON_S_HTLB_PGALLOC 8 /* Number of htlb pgalloc successes */
> +#define VIRTIO_BALLOON_S_HTLB_PGFAIL 9 /* Number of htlb pgalloc failures */
> +#define VIRTIO_BALLOON_S_NR 10
Can you clarify the comments pls? Eschew abbreviation.
>
> /*
> * Memory statistics structure.
> --
> 1.8.3.1
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] virtio_balloon: export huge page allocation statistics
2018-02-27 15:20 ` Michael S. Tsirkin
@ 2018-03-02 22:16 ` Jonathan Helman
0 siblings, 0 replies; 3+ messages in thread
From: Jonathan Helman @ 2018-03-02 22:16 UTC (permalink / raw)
To: Michael S. Tsirkin; +Cc: jasowang, virtualization, linux-kernel
On 02/27/2018 07:20 AM, Michael S. Tsirkin wrote:
> On Fri, Feb 16, 2018 at 09:44:32PM -0800, Jonathan Helman wrote:
>> Export statistics for successful and failed huge page allocations
>> from the virtio balloon driver. These 2 stats come directly from
>> the vm_events HTLB_BUDDY_PGALLOC and HTLB_BUDDY_PGALLOC_FAIL.
>> Signed-off-by: Jonathan Helman <jonathan.helman@oracle.com>
>
> Any host/guest intergace changes need to be copied to
> the virtio TC mailing list (subscriber-only, sorry about that):
> virtio-dev@lists.oasis-open.org
>
Sorry, will do on v2.
>> ---
>> drivers/virtio/virtio_balloon.c | 6 ++++++
>> include/uapi/linux/virtio_balloon.h | 4 +++-
>> 2 files changed, 9 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c
>> index dfe5684..6b237e3 100644
>> --- a/drivers/virtio/virtio_balloon.c
>> +++ b/drivers/virtio/virtio_balloon.c
>> @@ -272,6 +272,12 @@ static unsigned int update_balloon_stats(struct virtio_balloon *vb)
>> pages_to_bytes(events[PSWPOUT]));
>> update_stat(vb, idx++, VIRTIO_BALLOON_S_MAJFLT, events[PGMAJFAULT]);
>> update_stat(vb, idx++, VIRTIO_BALLOON_S_MINFLT, events[PGFAULT]);
>> +#ifdef CONFIG_HUGETLB_PAGE
>> + update_stat(vb, idx++, VIRTIO_BALLOON_S_HTLB_PGALLOC,
>> + events[HTLB_BUDDY_PGALLOC]);
>> + update_stat(vb, idx++, VIRTIO_BALLOON_S_HTLB_PGFAIL,
>> + events[HTLB_BUDDY_PGALLOC_FAIL]);
>> +#endif
>> #endif
>> update_stat(vb, idx++, VIRTIO_BALLOON_S_MEMFREE,
>> pages_to_bytes(i.freeram));
>> diff --git a/include/uapi/linux/virtio_balloon.h b/include/uapi/linux/virtio_balloon.h
>> index 4e8b830..e3e8071 100644
>> --- a/include/uapi/linux/virtio_balloon.h
>> +++ b/include/uapi/linux/virtio_balloon.h
>> @@ -53,7 +53,9 @@ struct virtio_balloon_config {
>> #define VIRTIO_BALLOON_S_MEMTOT 5 /* Total amount of memory */
>> #define VIRTIO_BALLOON_S_AVAIL 6 /* Available memory as in /proc */
>> #define VIRTIO_BALLOON_S_CACHES 7 /* Disk caches */
>> -#define VIRTIO_BALLOON_S_NR 8
>> +#define VIRTIO_BALLOON_S_HTLB_PGALLOC 8 /* Number of htlb pgalloc successes */
>> +#define VIRTIO_BALLOON_S_HTLB_PGFAIL 9 /* Number of htlb pgalloc failures */
>> +#define VIRTIO_BALLOON_S_NR 10
>
> Can you clarify the comments pls? Eschew abbreviation.
Sure. How about the following instead? Hoping it makes things clearer,
without going over the 80 character limit ;)
#define VIRTIO_BALLOON_S_HTLB_PGALLOC 8 /* Hugetlb page allocations */
#define VIRTIO_BALLOON_S_HTLB_PGFAIL 9 /* Hugetlb page allocation
failures */
If this is better, I'll send out a v2.
Thanks,
Jon
>
>>
>> /*
>> * Memory statistics structure.
>> --
>> 1.8.3.1
^ permalink raw reply [flat|nested] 3+ messages in thread
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2018-02-27 15:20 ` Michael S. Tsirkin
2018-03-02 22:16 ` Jonathan Helman
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