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58268b97f6
Add a read_mostly section and define __read_mostly to prevent cache line pollution due to writes for mostly read variables. In addition fix the incorrect alignment of the cache_line_aligned data section. s390 has a cacheline size of 256 bytes. Signed-off-by: Christian Borntraeger <cborntra@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
22 lines
451 B
C
22 lines
451 B
C
/*
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* include/asm-s390/cache.h
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*
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* S390 version
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* Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
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*
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* Derived from "include/asm-i386/cache.h"
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* Copyright (C) 1992, Linus Torvalds
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*/
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#ifndef __ARCH_S390_CACHE_H
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#define __ARCH_S390_CACHE_H
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#define L1_CACHE_BYTES 256
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#define L1_CACHE_SHIFT 8
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#define ARCH_KMALLOC_MINALIGN 8
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#define __read_mostly __attribute__((__section__(".data.read_mostly")))
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#endif
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