Commit 56397f8d authored Jul 07, 2008 by Jeremy Fitzhardinge Committed by Ingo Molnar Jul 16, 2008

xen: use lock-byte spinlock implementation



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: Jens Axboe <axboe@kernel.dk>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Christoph Lameter <clameter@linux-foundation.org>
Cc: Petr Tesarik <ptesarik@suse.cz>
Cc: Virtualization <virtualization@lists.linux-foundation.org>
Cc: Xen devel <xen-devel@lists.xensource.com>
Cc: Thomas Friebel <thomas.friebel@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

parent 8efcbab6

arch/x86/xen/smp.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -430,4 +430,5 @@ void __init xen_smp_init(void)
		{
		smp_ops = xen_smp_ops;
		xen_fill_possible_map();
		paravirt_use_bytelocks();
		}