The commit is pushed to "branch-rh9-5.14.0-70.22.1.vz9.17.x-ovz" and will
appear at https://src.openvz.org/scm/ovz/vzkernel.git
after rh9-5.14.0-70.22.1.vz9.17.7
------>
commit f8d95cc89535867e08144a64922b2695b6e0b699
Author: Alexander Atanasov <alexander.atana...@virtuozzo.com>
Date: Mon Oct 17 14:52:54 2022 +0300
drivers/hyperv: Balloon report stats to mm core
Propagate balloon stats to mm core.
Hyper-V balloon driver changes TOTAL RAM size reported by the guest,
thus propagating the "InflatedTotal" counter to mm.
https://jira.sw.ru/browse/PSBM-142436
Signed-off-by: Alexander Atanasov <alexander.atana...@virtuozzo.com>
Feature: balloon: usage information visible by guest
---
drivers/hv/hv_balloon.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/hv/hv_balloon.c b/drivers/hv/hv_balloon.c
index 2384d702cc3d..090b8a0375ae 100644
--- a/drivers/hv/hv_balloon.c
+++ b/drivers/hv/hv_balloon.c
@@ -24,6 +24,7 @@
#include <linux/percpu_counter.h>
#include <linux/page_reporting.h>
+#include <linux/balloon_compaction.h>
#include <linux/hyperv.h>
#include <asm/hyperv-tlfs.h>
@@ -1273,6 +1274,14 @@ static unsigned int alloc_balloon_pages(struct
hv_dynmem_device *dm,
return i * alloc_unit;
}
+static void report_ballooned_pages(struct hv_dynmem_device *dm)
+{
+ u32 actual = dm->num_pages_ballooned;
+ long inflated_kb = actual << (HV_HYP_PAGE_SHIFT - 10);
+
+ balloon_set_inflated_total(inflated_kb);
+}
+
static void balloon_up(struct work_struct *dummy)
{
unsigned int num_pages = dm_device.balloon_wrk.num_pages;
@@ -1361,6 +1370,7 @@ static void balloon_up(struct work_struct *dummy)
}
}
+ report_ballooned_pages(&dm_device);
}
static void balloon_down(struct hv_dynmem_device *dm,
@@ -1380,6 +1390,8 @@ static void balloon_down(struct hv_dynmem_device *dm,
pr_debug("Freed %u ballooned pages.\n",
prev_pages_ballooned - dm->num_pages_ballooned);
+ report_ballooned_pages(dm);
+
if (req->more_pages == 1)
return;
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