[PATCH v2 6/7] xen/balloon: try to merge system ram resources

Jürgen Groß
2020-09-09T05:18:59Z

On 08.09.20 22:10, David Hildenbrand wrote:
> 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: Boris Ostrovsky <boris.ostrovsky at oracle.com>
> Cc: Juergen Gross <jgross at suse.com>
> Cc: Stefano Stabellini <sstabellini at kernel.org>
> Cc: Roger Pau Monn? <roger.pau at citrix.com>
> Cc: Julien Grall <julien at xen.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>

Reviewed-by: Juergen Gross <jgross at suse.com>

Juergen

> ---
>   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 7bac38764513d..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, 0);
> +	rc = add_memory_resource(nid, resource, MEMHP_MERGE_RESOURCE);
>   	unlock_device_hotplug();
>   	mutex_lock(&balloon_mutex);
>
>