From afb33f8c0d7dea8c48ae1c2e3af5b437aa8dd7bb Mon Sep 17 00:00:00 2001 From: Jiri Kosina Date: Mon, 12 Jan 2009 12:53:45 +0100 Subject: x86: remove byte locks Impact: cleanup Remove byte locks implementation, which was introduced by Jeremy in 8efcbab6 ("paravirt: introduce a "lock-byte" spinlock implementation"), but turned out to be dead code that is not used by any in-kernel virtualization guest (Xen uses its own variant of spinlocks implementation and KVM is not planning to move to byte locks). Signed-off-by: Jiri Kosina Signed-off-by: Ingo Molnar --- arch/x86/kernel/paravirt-spinlocks.c | 10 ---------- 1 file changed, 10 deletions(-) (limited to 'arch/x86/kernel/paravirt-spinlocks.c') diff --git a/arch/x86/kernel/paravirt-spinlocks.c b/arch/x86/kernel/paravirt-spinlocks.c index 95777b0faa7..3a7c5a44082 100644 --- a/arch/x86/kernel/paravirt-spinlocks.c +++ b/arch/x86/kernel/paravirt-spinlocks.c @@ -26,13 +26,3 @@ struct pv_lock_ops pv_lock_ops = { }; EXPORT_SYMBOL(pv_lock_ops); -void __init paravirt_use_bytelocks(void) -{ -#ifdef CONFIG_SMP - pv_lock_ops.spin_is_locked = __byte_spin_is_locked; - pv_lock_ops.spin_is_contended = __byte_spin_is_contended; - pv_lock_ops.spin_lock = __byte_spin_lock; - pv_lock_ops.spin_trylock = __byte_spin_trylock; - pv_lock_ops.spin_unlock = __byte_spin_unlock; -#endif -} -- cgit v1.2.3