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| 1 | #ifndef _ASM_IA64_CACHE_H |
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| 2 | #define _ASM_IA64_CACHE_H |
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| 3 | |
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| 4 | #include <linux/config.h> |
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| 5 | |
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| 6 | /* |
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| 7 | * Copyright (C) 1998-2000 Hewlett-Packard Co |
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| 8 | * David Mosberger-Tang <davidm@hpl.hp.com> |
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| 9 | */ |
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| 10 | |
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| 11 | /* Bytes per L1 (data) cache line. */ |
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| 12 | #define L1_CACHE_SHIFT CONFIG_IA64_L1_CACHE_SHIFT |
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| 13 | #define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) |
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| 14 | |
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| 15 | #define L1_CACHE_SHIFT_MAX 7 /* largest L1 which this arch supports */ |
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| 16 | |
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| 17 | #ifdef XEN |
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| 18 | # define SMP_CACHE_SHIFT L1_CACHE_SHIFT |
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| 19 | # define SMP_CACHE_BYTES L1_CACHE_BYTES |
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| 20 | #else |
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| 21 | #ifdef CONFIG_SMP |
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| 22 | # define SMP_CACHE_SHIFT L1_CACHE_SHIFT |
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| 23 | # define SMP_CACHE_BYTES L1_CACHE_BYTES |
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| 24 | #else |
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| 25 | /* |
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| 26 | * The "aligned" directive can only _increase_ alignment, so this is |
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| 27 | * safe and provides an easy way to avoid wasting space on a |
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| 28 | * uni-processor: |
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| 29 | */ |
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| 30 | # define SMP_CACHE_SHIFT 3 |
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| 31 | # define SMP_CACHE_BYTES (1 << 3) |
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| 32 | #endif |
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| 33 | #endif |
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| 34 | |
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| 35 | #define __read_mostly __attribute__((__section__(".data.read_mostly"))) |
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| 36 | |
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| 37 | #endif /* _ASM_IA64_CACHE_H */ |
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