linux/include/asm-s390/cache.h

/*
 *  include/asm-s390/cache.h
 *
 *  S390 version
 *    Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
 *
 *  Derived from "include/asm-i386/cache.h"
 *    Copyright (C) 1992, Linus Torvalds
 */

#ifndef __ARCH_S390_CACHE_H
#define __ARCH_S390_CACHE_H

#define L1_CACHE_BYTES     256
#define L1_CACHE_SHIFT     8

#define ARCH_KMALLOC_MINALIGN	8

#define __read_mostly __attribute__((__section__(".data.read_mostly")))

#endif
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! 2005-04-17 06:20:36 +08:00			`/*`
			`* include/asm-s390/cache.h`
			`*`
			`* S390 version`
			`* Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation`
			`*`
			`* Derived from "include/asm-i386/cache.h"`
			`* Copyright (C) 1992, Linus Torvalds`
			`*/`

			`#ifndef __ARCH_S390_CACHE_H`
			`#define __ARCH_S390_CACHE_H`

			`#define L1_CACHE_BYTES 256`
			`#define L1_CACHE_SHIFT 8`

			`#define ARCH_KMALLOC_MINALIGN 8`

[PATCH] s390: add read_mostly optimization 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> 2006-04-28 09:40:24 +08:00			`#define __read_mostly __attribute__((__section__(".data.read_mostly")))`

Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! 2005-04-17 06:20:36 +08:00			`#endif`