Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / x86 / kernel / paravirt-spinlocks.c

diff --git a/kernel/arch/x86/kernel/paravirt-spinlocks.c b/kernel/arch/x86/kernel/paravirt-spinlocks.c
new file mode 100644 (file)
index 0000000..bbb6c73
--- /dev/null
+++ b/kernel/arch/x86/kernel/paravirt-spinlocks.c
@@ -0,0 +1,20 @@
+/*
+ * Split spinlock implementation out into its own file, so it can be
+ * compiled in a FTRACE-compatible way.
+ */
+#include <linux/spinlock.h>
+#include <linux/module.h>
+#include <linux/jump_label.h>
+
+#include <asm/paravirt.h>
+
+struct pv_lock_ops pv_lock_ops = {
+#ifdef CONFIG_SMP
+       .lock_spinning = __PV_IS_CALLEE_SAVE(paravirt_nop),
+       .unlock_kick = paravirt_nop,
+#endif
+};
+EXPORT_SYMBOL(pv_lock_ops);
+
+struct static_key paravirt_ticketlocks_enabled = STATIC_KEY_INIT_FALSE;
+EXPORT_SYMBOL(paravirt_ticketlocks_enabled);