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path: root/drivers/hv/hv_balloon.c
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Diffstat (limited to 'drivers/hv/hv_balloon.c')
-rw-r--r--drivers/hv/hv_balloon.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/hv/hv_balloon.c b/drivers/hv/hv_balloon.c
index 32a96f164dc8..f8fc99600de8 100644
--- a/drivers/hv/hv_balloon.c
+++ b/drivers/hv/hv_balloon.c
@@ -414,10 +414,17 @@ struct dm_info_msg {
static bool hot_add;
static bool do_hot_add;
+/*
+ * Delay reporting memory pressure by
+ * the specified number of seconds.
+ */
+static uint pressure_report_delay = 30;
module_param(hot_add, bool, (S_IRUGO | S_IWUSR));
MODULE_PARM_DESC(hot_add, "If set attempt memory hot_add");
+module_param(pressure_report_delay, uint, (S_IRUGO | S_IWUSR));
+MODULE_PARM_DESC(pressure_report_delay, "Delay in secs in reporting pressure");
static atomic_t trans_id = ATOMIC_INIT(0);
static int dm_ring_size = (5 * PAGE_SIZE);
@@ -531,6 +538,10 @@ static void post_status(struct hv_dynmem_device *dm)
struct dm_status status;
struct sysinfo val;
+ if (pressure_report_delay > 0) {
+ --pressure_report_delay;
+ return;
+ }
si_meminfo(&val);
memset(&status, 0, sizeof(struct dm_status));
status.hdr.type = DM_STATUS_REPORT;
@@ -552,8 +563,6 @@ static void post_status(struct hv_dynmem_device *dm)
}
-
-
static void free_balloon_pages(struct hv_dynmem_device *dm,
union dm_mem_page_range *range_array)
{

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