[PATCH RFC 3/4] xen: use lock-byte spinlock implementation

[Jeremy Fitzhardinge <jeremy@goop.org>]

[-- Attachment #1: xen-use-byte-locks.patch --]
[-- Type: text/plain, Size: 525 bytes --]

Switch to using the lock-byte spinlock implementation, to avoid the
worst of the performance hit from ticket locks.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Thomas Friebel <thomas.friebel@amd.com>
---
 arch/x86/xen/smp.c |    1 +
 1 file changed, 1 insertion(+)

===================================================================
--- a/arch/x86/xen/smp.c
+++ b/arch/x86/xen/smp.c
@@ -430,4 +430,5 @@
 {
 	smp_ops = xen_smp_ops;
 	xen_fill_possible_map();
+	paravirt_use_bytelocks();
 }

--