[PATCH v2 7/7] hv_balloon: try to merge system ram resources

David Hildenbrand
2020-09-08T20:10:12Z

Let's try to merge system ram resources we add, to minimize the number
of resources in /proc/iomem. We don't care about the boundaries of
individual chunks we added.

Cc: Andrew Morton <akpm at linux-foundation.org>
Cc: Michal Hocko <mhocko at suse.com>
Cc: "K. Y. Srinivasan" <kys at microsoft.com>
Cc: Haiyang Zhang <haiyangz at microsoft.com>
Cc: Stephen Hemminger <sthemmin at microsoft.com>
Cc: Wei Liu <wei.liu at kernel.org>
Cc: Pankaj Gupta <pankaj.gupta.linux at gmail.com>
Cc: Baoquan He <bhe at redhat.com>
Cc: Wei Yang <richardw.yang at linux.intel.com>
Signed-off-by: David Hildenbrand <david at redhat.com>
---
 drivers/hv/hv_balloon.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hv/hv_balloon.c b/drivers/hv/hv_balloon.c
index 0194bed1a5736..b64d2efbefe71 100644
--- a/drivers/hv/hv_balloon.c
+++ b/drivers/hv/hv_balloon.c
@@ -726,7 +726,7 @@ static void hv_mem_hot_add(unsigned long start, unsigned
long size,

 		nid = memory_add_physaddr_to_nid(PFN_PHYS(start_pfn));
 		ret = add_memory(nid, PFN_PHYS((start_pfn)),
-				(HA_CHUNK << PAGE_SHIFT), 0);
+				(HA_CHUNK << PAGE_SHIFT), MEMHP_MERGE_RESOURCE);

 		if (ret) {
 			pr_err("hot_add memory failed error is %d\n", ret);
--
2.26.2