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From: David Hildenbrand <david@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: virtualization@lists.linux-foundation.org, linux-mm@kvack.org,
	linux-hyperv@vger.kernel.org, xen-devel@lists.xenproject.org,
	linux-acpi@vger.kernel.org, linux-nvdimm@lists.01.org,
	linux-s390@vger.kernel.org,
	"Andrew Morton" <akpm@linux-foundation.org>,
	"David Hildenbrand" <david@redhat.com>,
	"Juergen Gross" <jgross@suse.com>,
	"Andrew Morton" <akpmt@linux-foundation.org>,
	"Michal Hocko" <mhocko@suse.com>,
	"Boris Ostrovsky" <boris.ostrovsky@oracle.com>,
	"Stefano Stabellini" <sstabellini@kernel.org>,
	"Roger Pau Monné" <roger.pau@citrix.com>,
	"Julien Grall" <julien@xen.org>,
	"Pankaj Gupta" <pankaj.gupta.linux@gmail.com>,
	"Baoquan He" <bhe@redhat.com>,
	"Wei Yang" <richardw.yang@linux.intel.com>
Subject: [PATCH v4 7/8] xen/balloon: try to merge system ram resources
Date: Fri, 11 Sep 2020 12:34:58 +0200	[thread overview]
Message-ID: <20200911103459.10306-8-david@redhat.com> (raw)
In-Reply-To: <20200911103459.10306-1-david@redhat.com>

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.

Reviewed-by: Juergen Gross <jgross@suse.com>
Cc: Andrew Morton <akpmt@linux-foundation.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Stefano Stabellini <sstabellini@kernel.org>
Cc: Roger Pau Monné <roger.pau@citrix.com>
Cc: Julien Grall <julien@xen.org>
Cc: Pankaj Gupta <pankaj.gupta.linux@gmail.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Wei Yang <richardw.yang@linux.intel.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
---
 drivers/xen/balloon.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c
index 9f40a294d398d..b57b2067ecbfb 100644
--- a/drivers/xen/balloon.c
+++ b/drivers/xen/balloon.c
@@ -331,7 +331,7 @@ static enum bp_state reserve_additional_memory(void)
 	mutex_unlock(&balloon_mutex);
 	/* add_memory_resource() requires the device_hotplug lock */
 	lock_device_hotplug();
-	rc = add_memory_resource(nid, resource, MHP_NONE);
+	rc = add_memory_resource(nid, resource, MEMHP_MERGE_RESOURCE);
 	unlock_device_hotplug();
 	mutex_lock(&balloon_mutex);
 
-- 
2.26.2


  parent reply	other threads:[~2020-09-11 10:37 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20200911103459.10306-1-david@redhat.com>
2020-09-11 10:34 ` [PATCH v4 1/8] kernel/resource: make release_mem_region_adjustable() never fail David Hildenbrand
2020-09-22  6:07   ` [PATCH] kernel/resource: Fix use of ternary condition in release_mem_region_adjustable Nathan Chancellor
2020-09-22  6:22     ` David Hildenbrand
2020-10-09  9:24     ` Wei Yang
2020-09-11 10:34 ` [PATCH v4 2/8] kernel/resource: move and rename IORESOURCE_MEM_DRIVER_MANAGED David Hildenbrand
2020-09-11 10:34 ` [PATCH v4 3/8] mm/memory_hotplug: guard more declarations by CONFIG_MEMORY_HOTPLUG David Hildenbrand
2020-09-11 10:34 ` [PATCH v4 4/8] mm/memory_hotplug: prepare passing flags to add_memory() and friends David Hildenbrand
2020-09-11 10:34 ` [PATCH v4 5/8] mm/memory_hotplug: MEMHP_MERGE_RESOURCE to specify merging of System RAM resources David Hildenbrand
2020-09-15  2:43   ` Wei Yang
2020-09-15  7:25     ` David Hildenbrand
2020-09-11 10:34 ` [PATCH v4 6/8] virtio-mem: try to merge system ram resources David Hildenbrand
2020-09-11 10:34 ` David Hildenbrand [this message]
2020-09-11 10:34 ` [PATCH v4 8/8] hv_balloon: " David Hildenbrand
2020-09-16  7:30 ` [PATCH] kernel/resource: make iomem_resource implicit in release_mem_region_adjustable() David Hildenbrand
2020-09-16 10:02   ` Wei Yang
2020-09-16 10:03     ` David Hildenbrand
     [not found]       ` <20200916121051.GA46809@L-31X9LVDL-1304.local>
2020-09-16 12:16         ` David Hildenbrand
2020-09-17  8:38   ` Pankaj Gupta

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