xen: support runqueue steal time on xen
authorJuergen Gross <jgross@suse.com>
Wed, 6 Jul 2016 05:00:30 +0000 (07:00 +0200)
committerDavid Vrabel <david.vrabel@citrix.com>
Wed, 6 Jul 2016 09:42:19 +0000 (10:42 +0100)
commit6ba286ad845799b135e5af73d1fbc838fa79f709
treeeaa9dae091db425accdda28347ee131b459ab5e3
parent4b5ae0150f29f494427a5d5561f1cd43e6cb2396
xen: support runqueue steal time on xen

Up to now reading the stolen time of a remote cpu was not possible in a
performant way under Xen. This made support of runqueue steal time via
paravirt_steal_rq_enabled impossible.

With the addition of an appropriate hypervisor interface this is now
possible, so add the support.

Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
drivers/xen/time.c