From 8a6d48c0542876eb3acfc0970c0ab7872db08d5f Mon Sep 17 00:00:00 2001 From: Zheng Da Date: Sun, 6 Dec 2009 05:26:23 +0100 Subject: check in the original version of dde linux26. --- libdde_linux26/contrib/include/linux/cache.h | 67 ++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 libdde_linux26/contrib/include/linux/cache.h (limited to 'libdde_linux26/contrib/include/linux/cache.h') diff --git a/libdde_linux26/contrib/include/linux/cache.h b/libdde_linux26/contrib/include/linux/cache.h new file mode 100644 index 00000000..97e24881 --- /dev/null +++ b/libdde_linux26/contrib/include/linux/cache.h @@ -0,0 +1,67 @@ +#ifndef __LINUX_CACHE_H +#define __LINUX_CACHE_H + +#include +#include + +#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 __read_mostly +#define __read_mostly +#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 + +/* + * The maximum alignment needed for some critical structures + * These could be inter-node cacheline sizes/L3 cacheline + * size etc. Define this in asm/cache.h for your arch + */ +#ifndef INTERNODE_CACHE_SHIFT +#define INTERNODE_CACHE_SHIFT L1_CACHE_SHIFT +#endif + +#if !defined(____cacheline_internodealigned_in_smp) +#if defined(CONFIG_SMP) +#define ____cacheline_internodealigned_in_smp \ + __attribute__((__aligned__(1 << (INTERNODE_CACHE_SHIFT)))) +#else +#define ____cacheline_internodealigned_in_smp +#endif +#endif + +#ifndef CONFIG_ARCH_HAS_CACHE_LINE_SIZE +#define cache_line_size() L1_CACHE_BYTES +#endif + +#endif /* __LINUX_CACHE_H */ -- cgit v1.2.3