mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-07 14:06:39 +07:00
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
/*
|
|
* 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
|