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| author |   Jeremy Fitzhardinge <jeremy@goop.org> | 2008-07-07 12:07:52 -0700 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2008-07-16 11:15:53 +0200 |
| commit | 56397f8dadb40055479a8ffff23f21a890098a31 (patch) | |
| tree | be682521f99ebd1233435ac0b0416a1439987846 | |
| parent | paravirt: introduce a "lock-byte" spinlock implementation (diff) | |
| download | linux-dev-56397f8dadb40055479a8ffff23f21a890098a31.tar.xz linux-dev-56397f8dadb40055479a8ffff23f21a890098a31.zip | |
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>
| -rw-r--r-- | arch/x86/xen/smp.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c index f702199312a5..a8ebafc09d47 100644 --- a/arch/x86/xen/smp.c +++ b/arch/x86/xen/smp.c @@ -430,4 +430,5 @@ void __init xen_smp_init(void) { smp_ops = xen_smp_ops; xen_fill_possible_map(); + paravirt_use_bytelocks(); } |