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kernel add
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#ifndef _ASM_X86_CACHE_H
#define _ASM_X86_CACHE_H
#include <linux/linkage.h>
/* L1 cache line size */
#define L1_CACHE_SHIFT (CONFIG_X86_L1_CACHE_SHIFT)
#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
#define __read_mostly __attribute__((__section__(".data..read_mostly")))
#define INTERNODE_CACHE_SHIFT CONFIG_X86_INTERNODE_CACHE_SHIFT
#define INTERNODE_CACHE_BYTES (1 << INTERNODE_CACHE_SHIFT)
#ifdef CONFIG_X86_VSMP
#ifdef CONFIG_SMP
#define __cacheline_aligned_in_smp \
__attribute__((__aligned__(INTERNODE_CACHE_BYTES))) \
__page_aligned_data
#endif
#endif
#endif /* _ASM_X86_CACHE_H */
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