1 files changed, 51 insertions, 0 deletions

diff --git a/include/linux/cache.h b/include/linux/cache.h
new file mode 100644
index 000000000000..4d767b93738a
--- /dev/null
+++ b/include/linux/cache.h
@@ -0,0 +1,51 @@
+#ifndef __LINUX_CACHE_H
+#define __LINUX_CACHE_H
+
+#include <linux/kernel.h>
+#include <linux/config.h>
+#include <asm/cache.h>
+
+#ifndef L1_CACHE_ALIGN
+#define L1_CACHE_ALIGN(x) ALIGN(x, L1_CACHE_BYTES)
+#endif
+
+#ifndef SMP_CACHE_BYTES
+#define SMP_CACHE_BYTES L1_CACHE_BYTES
+#endif
+
+#ifndef ____cacheline_aligned
+#define ____cacheline_aligned __attribute__((__aligned__(SMP_CACHE_BYTES)))
+#endif
+
+#ifndef ____cacheline_aligned_in_smp
+#ifdef CONFIG_SMP
+#define ____cacheline_aligned_in_smp ____cacheline_aligned
+#else
+#define ____cacheline_aligned_in_smp
+#endif /* CONFIG_SMP */
+#endif
+
+#ifndef __cacheline_aligned
+#define __cacheline_aligned                                     \
+  __attribute__((__aligned__(SMP_CACHE_BYTES),                  \
+                 __section__(".data.cacheline_aligned")))
+#endif /* __cacheline_aligned */
+
+#ifndef __cacheline_aligned_in_smp
+#ifdef CONFIG_SMP
+#define __cacheline_aligned_in_smp __cacheline_aligned
+#else
+#define __cacheline_aligned_in_smp
+#endif /* CONFIG_SMP */
+#endif
+
+#if !defined(____cacheline_maxaligned_in_smp)
+#if defined(CONFIG_SMP)
+#define ____cacheline_maxaligned_in_smp \
+        __attribute__((__aligned__(1 << (L1_CACHE_SHIFT_MAX))))
+#else
+#define ____cacheline_maxaligned_in_smp
+#endif
+#endif
+
+#endif /* __LINUX_CACHE_H */