[PATCH v1 01/29] xen/asm-generic: introduce stub header spinlock.h

[Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>]

The patch introduces stub header needed for full Xen build.

Signed-off-by: Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
---
 xen/include/asm-generic/spinlock.h | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 xen/include/asm-generic/spinlock.h

diff --git a/xen/include/asm-generic/spinlock.h 
b/xen/include/asm-generic/spinlock.h
new file mode 100644
index 0000000000..22a9ec5222
--- /dev/null
+++ b/xen/include/asm-generic/spinlock.h
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_GENERIC_SPINLOCK_H__
+#define __ASM_GENERIC_SPINLOCK_H__
+
+#define arch_lock_acquire_barrier() smp_mb()
+#define arch_lock_release_barrier() smp_mb()
+
+#define arch_lock_relax() cpu_relax()
+#define arch_lock_signal() do { \
+} while(0)
+
+#define arch_lock_signal_wmb() arch_lock_signal()
+
+#endif /* __ASM_GENERIC_SPINLOCK_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0