vmalloc.h

来自「Linux Kernel 2.6.9 for OMAP1710」· C头文件 代码 · 共 36 行

/* 
 * linux/include/asm-arm/arch-omap2/vmalloc.h
 * 
 * Defines for VMalloc
 *
 * Copyright (C) 2000 Russell King.
 *
 * Copyright (C) 2004 Texas Instruments, Inc. 
 * 
 * This package is free software; you can redistribute it and/or modify 
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation. 
 * 
 * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 
 */

#ifndef __ASM_ARM_ARCH_OMAP2_VMALLOC_H
#define __ASM_ARM_ARCH_OMAP2_VMALLOC_H

/*
 * Just any arbitrary offset to the start of the vmalloc VM area: the
 * current 8MB value just means that there will be a 8MB "hole" after the
 * physical memory until the kernel virtual memory starts.  That means that
 * any out-of-bounds memory accesses will hopefully be caught.
 * The vmalloc() routines leaves a hole of 4kB between each vmalloced
 * area for the same reason. ;)
 */
#define VMALLOC_OFFSET    (8*1024*1024)
#define VMALLOC_START     (((unsigned long)high_memory + VMALLOC_OFFSET) & ~(VMALLOC_OFFSET-1))
#define VMALLOC_VMADDR(x) ((unsigned long)(x))
#define VMALLOC_END       (PAGE_OFFSET + 0x10000000)

#endif				/* __ASM_ARM_ARCH_OMAP2_VMALLOC_H */