--- /dev/null
+#ifndef __TOOLS_LINUX_CACHE_H
+#define __TOOLS_LINUX_CACHE_H
+
+#define L1_CACHE_SHIFT 6
+#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
+#define SMP_CACHE_BYTES L1_CACHE_BYTES
+
+#define L1_CACHE_ALIGN(x) __ALIGN_KERNEL(x, L1_CACHE_BYTES)
+
+#define __read_mostly
+#define __ro_after_init
+
+#define ____cacheline_aligned __attribute__((__aligned__(SMP_CACHE_BYTES)))
+#define ____cacheline_aligned_in_smp ____cacheline_aligned
+
+#endif /* __TOOLS_LINUX_CACHE_H */
+