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/* -*- linux-c -*-
* Memory allocation functions
* Copyright (C) 2005, 2006, 2007 Red Hat Inc.
*
* This file is part of systemtap, and is free software. You can
* redistribute it and/or modify it under the terms of the GNU General
* Public License (GPL); either version 2, or (at your option) any
* later version.
*/
#ifndef _ALLOC_C_
#define _ALLOC_C_
/* counters of how much memory has been allocated */
static int _stp_allocated_memory = 0;
static int _stp_allocated_net_memory = 0;
#define STP_ALLOC_FLAGS (GFP_KERNEL | __GFP_NORETRY | __GFP_NOWARN)
static void *_stp_kmalloc(size_t size)
{
void *ret = kmalloc(size, STP_ALLOC_FLAGS);
if (ret)
_stp_allocated_memory += size;
return ret;
}
static void *_stp_kzalloc(size_t size)
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,15)
{
void *ret = kmalloc(size, STP_ALLOC_FLAGS);
if (ret) {
memset (ret, 0, size);
_stp_allocated_memory += size;
}
return ret;
}
#else
{
void *ret = kzalloc(size, STP_ALLOC_FLAGS);
if (ret)
_stp_allocated_memory += size;
return ret;
}
#endif
static void *_stp_vmalloc(unsigned long size)
{
void *ret = __vmalloc(size, STP_ALLOC_FLAGS, PAGE_KERNEL);
if (ret)
_stp_allocated_memory += size;
return ret;
}
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,15)
#define _stp_alloc_percpu(size) __alloc_percpu(size, 8)
#else
#define _stp_alloc_percpu(size) __alloc_percpu(size)
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,12)
#define kmalloc_node(size,flags,node) kmalloc(size,flags)
#endif /* LINUX_VERSION_CODE */
#endif /* _ALLOC_C_ */
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