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#ifndef __LINUX_CACHE_H
#define __LINUX_CACHE_H
#include <uapi/linux/kernel.h>
#include <asm/cache.h>
#ifndef L1_CACHE_ALIGN
#define L1_CACHE_ALIGN(x) __ALIGN_KERNEL(x, L1_CACHE_BYTES)
#endif
#ifndef SMP_CACHE_BYTES
#define SMP_CACHE_BYTES L1_CACHE_BYTES
#endif
/*
* __read_mostly is used to keep rarely changing variables out of frequently
* updated cachelines. If an architecture doesn't support it, ignore the
* hint.
*/
#ifndef __read_mostly
#define __read_mostly
#endif
/*
* __ro_after_init is used to mark things that are read-only after init (i.e.
* after mark_rodata_ro() has been called). These are effectively read-only,
* but may get written to during init, so can't live in .rodata (via "const").
*/
#ifndef __ro_after_init
#define __ro_after_init __attribute__((__section__(".data..ro_after_init")))
#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 */