A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-29 11:11:45 -04:00
Code Issues Projects Releases Packages Wiki Activity

virtio_balloon: export 'available' memory to balloon statistics

Browse source 
Add a new field, VIRTIO_BALLOON_S_AVAIL, to virtio_balloon memory
statistics protocol, corresponding to 'Available' in /proc/meminfo.

It indicates to the hypervisor how big the balloon can be inflated
without pushing the guest system to swap.

Signed-off-by: Igor Redko <[email protected]>
Signed-off-by: Denis V. Lunev <[email protected]>
Reviewed-by: Roman Kagan <[email protected]>
Cc: Michael S. Tsirkin <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Igor Redko 2016-03-17 14:19:08 -07:00 • committed by Linus Torvalds
commit 5057dcd0f1
2 changed files with 8 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

6
drivers/virtio/virtio_balloon.c
View file

@ -30,6 +30,7 @@
#include <linux/balloon_compaction.h>
#include <linux/oom.h>
#include <linux/wait.h>
#include <linux/mm.h>
/*
* Balloon device works in 4K page units. So each page is pointed to by
@ -229,10 +230,13 @@ static void update_balloon_stats(struct virtio_balloon *vb)
unsigned long events[NR_VM_EVENT_ITEMS];
struct sysinfo i;
int idx = 0;
long available;
all_vm_events(events);
si_meminfo(&i);
available = si_mem_available();
update_stat(vb, idx++, VIRTIO_BALLOON_S_SWAP_IN,
pages_to_bytes(events[PSWPIN]));
update_stat(vb, idx++, VIRTIO_BALLOON_S_SWAP_OUT,
@ -243,6 +247,8 @@ static void update_balloon_stats(struct virtio_balloon *vb)
pages_to_bytes(i.freeram));
update_stat(vb, idx++, VIRTIO_BALLOON_S_MEMTOT,
pages_to_bytes(i.totalram));
update_stat(vb, idx++, VIRTIO_BALLOON_S_AVAIL,
pages_to_bytes(available));
}
/*