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/*
* (C) COPYRIGHT ARM Limited. All rights reserved.
*
* This program is free software and is provided to you under the terms of the
* GNU General Public License version 2 as published by the Free Software
* Foundation, and any use by you of this program is subject to the terms
* of such GNU licence.
*
* A copy of the licence is included with the program, and can also be obtained
* from Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifdef EMULATOR
#include "emulator_userspace.h"
#else
#include <linux/export.h>
#include <linux/slab.h>
#include <linux/sched.h>
#endif
#include "mve_rsrc_mem_frontend.h"
#include "mve_rsrc_mem_cache.h"
#include "mve_rsrc_log.h"
#define MAX_MEMORY_CACHE_SMALL 32
#define MAX_MEMORY_CACHE_MEDIUM 128
#define MAX_MEMORY_CACHE_LARGE 1024
static struct kmem_cache *mve_small_cachep;
static struct kmem_cache *mve_medium_cachep;
static struct kmem_cache *mve_large_cachep;
void mve_rsrc_mem_cache_init(void)
{
mve_small_cachep = kmem_cache_create("mve_small_cache",
MAX_MEMORY_CACHE_SMALL,
0,
SLAB_HWCACHE_ALIGN,
NULL);
mve_medium_cachep = kmem_cache_create("mve_medium_cache",
MAX_MEMORY_CACHE_MEDIUM,
0,
SLAB_HWCACHE_ALIGN,
NULL);
mve_large_cachep = kmem_cache_create("mve_large_cache",
MAX_MEMORY_CACHE_LARGE,
0,
SLAB_HWCACHE_ALIGN,
NULL);
}
void mve_rsrc_mem_cache_deinit(void)
{
if (NULL != mve_small_cachep)
{
kmem_cache_destroy(mve_small_cachep);
}
if (NULL != mve_medium_cachep)
{
kmem_cache_destroy(mve_medium_cachep);
}
if (NULL != mve_large_cachep)
{
kmem_cache_destroy(mve_large_cachep);
}
}
static struct kmem_cache *mve_rsrc_get_cachep(uint32_t size)
{
struct kmem_cache *cachep = NULL;
if (size <= MAX_MEMORY_CACHE_SMALL)
{
cachep = mve_small_cachep;
}
else if (size <= MAX_MEMORY_CACHE_MEDIUM)
{
cachep = mve_medium_cachep;
}
else if (size <= MAX_MEMORY_CACHE_LARGE)
{
cachep = mve_large_cachep;
}
else
{
MVE_LOG_PRINT(&mve_rsrc_log, MVE_LOG_ERROR, "No allocation slab found. size=%u.", size);
}
return cachep;
}
void *mve_rsrc_mem_cache_alloc(uint32_t size, uint32_t flags)
{
void *ptr;
struct kmem_cache *cachep;
cachep = mve_rsrc_get_cachep(size);
if (NULL == cachep)
{
ptr = vmalloc(size);
}
else
{
ptr = kmem_cache_alloc(cachep, flags);
if (ptr)
{
memset(ptr, 0, size);
}
}
return ptr;
}
void mve_rsrc_mem_cache_free(void *ptr, uint32_t size)
{
struct kmem_cache *cachep;
cachep = mve_rsrc_get_cachep(size);
if (NULL == cachep)
{
vfree(ptr);
}
else
{
kmem_cache_free(cachep, ptr);
}
}
EXPORT_SYMBOL(mve_rsrc_mem_cache_alloc);
EXPORT_SYMBOL(mve_rsrc_mem_cache_free);
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