/* * Copyright (c) 2000-2004 Silicon Graphics, Inc.  All Rights Reserved. * * This program is free software; you can redistribute it and/or modify it * under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it would be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. * * Further, this software is distributed without any warranty that it is * free of the rightful claim of any third person regarding infringement * or the like.  Any license provided herein, whether implied or * otherwise, applies only to this software file.  Patent licenses, if * any, provided herein do not apply to combinations of this program with * other software, or any other product whatsoever. * * You should have received a copy of the GNU General Public License along * with this program; if not, write the Free Software Foundation, Inc., 59 * Temple Place - Suite 330, Boston MA 02111-1307, USA. * * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, * Mountain View, CA  94043, or: * * http://www.sgi.com * * For further information regarding this notice, see: * * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ */#include <linux/sched.h>#include <linux/mm.h>#include <linux/vmalloc.h>#include <linux/highmem.h>#include <linux/swap.h>#include "time.h"#include "kmem.h"#define MAX_VMALLOCS	6#define MAX_SLAB_SIZE	0x20000void *kmem_alloc(size_t size, int flags){	int	retries = 0, lflags = kmem_flags_convert(flags);	void	*ptr;	do {		if (size < MAX_SLAB_SIZE || retries > MAX_VMALLOCS)			ptr = kmalloc(size, lflags);		else			ptr = __vmalloc(size, lflags, PAGE_KERNEL);		if (ptr || (flags & (KM_MAYFAIL|KM_NOSLEEP)))			return ptr;		if (!(++retries % 100))			printk(KERN_ERR "possible deadlock in %s (mode:0x%x)\n",					__FUNCTION__, lflags);	} while (1);}void *kmem_zalloc(size_t size, int flags){	void	*ptr;	ptr = kmem_alloc(size, flags);	if (ptr)		memset((char *)ptr, 0, (int)size);	return ptr;}voidkmem_free(void *ptr, size_t size){	if (((unsigned long)ptr < VMALLOC_START) ||	    ((unsigned long)ptr >= VMALLOC_END)) {		kfree(ptr);	} else {		vfree(ptr);	}}void *kmem_realloc(void *ptr, size_t newsize, size_t oldsize, int flags){	void	*new;	new = kmem_alloc(newsize, flags);	if (ptr) {		if (new)			memcpy(new, ptr,				((oldsize < newsize) ? oldsize : newsize));		kmem_free(ptr, oldsize);	}	return new;}void *kmem_zone_alloc(kmem_zone_t *zone, int flags){	int	retries = 0, lflags = kmem_flags_convert(flags);	void	*ptr;	do {		ptr = kmem_cache_alloc(zone, lflags);		if (ptr || (flags & (KM_MAYFAIL|KM_NOSLEEP)))			return ptr;		if (!(++retries % 100))			printk(KERN_ERR "possible deadlock in %s (mode:0x%x)\n",					__FUNCTION__, lflags);	} while (1);}void *kmem_zone_zalloc(kmem_zone_t *zone, int flags){	void	*ptr;	ptr = kmem_zone_alloc(zone, flags);	if (ptr)		memset((char *)ptr, 0, kmem_cache_size(zone));	return ptr;}