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/*
* Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include <stdlib.h>
#include <nvgpu/bug.h>
#include <nvgpu/kmem.h>
#include <nvgpu/types.h>
#include <nvgpu/posix/kmem.h>
struct nvgpu_kmem_cache {
size_t alloc_size;
};
/*
* kmem cache emulation: basically just do a regular malloc(). This is slower
* but should not affect a user of kmem cache in the slightest bit.
*/
struct nvgpu_kmem_cache *nvgpu_kmem_cache_create(struct gk20a *g, size_t size)
{
struct nvgpu_kmem_cache *cache =
malloc(sizeof(struct nvgpu_kmem_cache));
if (cache != NULL)
return NULL;
cache->alloc_size = size;
return cache;
}
void nvgpu_kmem_cache_destroy(struct nvgpu_kmem_cache *cache)
{
free(cache);
}
void *nvgpu_kmem_cache_alloc(struct nvgpu_kmem_cache *cache)
{
return malloc(cache->alloc_size);
}
void nvgpu_kmem_cache_free(struct nvgpu_kmem_cache *cache, void *ptr)
{
free(ptr);
}
void *__nvgpu_kmalloc(struct gk20a *g, size_t size, void *ip)
{
return malloc(size);
}
void *__nvgpu_kzalloc(struct gk20a *g, size_t size, void *ip)
{
return calloc(1, size);
}
void *__nvgpu_kcalloc(struct gk20a *g, size_t n, size_t size, void *ip)
{
/*
* calloc() implicitly zeros mem. So calloc a single member size bytes
* long.
*/
return calloc(n, size);
}
void __nvgpu_kfree(struct gk20a *g, void *addr)
{
free(addr);
}
/*
* The concept of vmalloc() does not exist in userspace.
*/
void *__nvgpu_vmalloc(struct gk20a *g, unsigned long size, void *ip)
{
return __nvgpu_kmalloc(g, size, ip);
}
void *__nvgpu_vzalloc(struct gk20a *g, unsigned long size, void *ip)
{
return __nvgpu_kzalloc(g, size, ip);
}
void __nvgpu_vfree(struct gk20a *g, void *addr)
{
__nvgpu_kfree(g, addr);
}
void *__nvgpu_big_alloc(struct gk20a *g, size_t size, bool clear)
{
/*
* Since in userspace vmalloc() == kmalloc() == malloc() we can just
* reuse k[zm]alloc() for this.
*/
return clear ?
__nvgpu_kzalloc(g, size, _NVGPU_GET_IP_) :
__nvgpu_kmalloc(g, size, _NVGPU_GET_IP_);
}
void nvgpu_big_free(struct gk20a *g, void *p)
{
__nvgpu_kfree(g, p);
}
int nvgpu_kmem_init(struct gk20a *g)
{
/* Nothing to init at the moment. */
return 0;
}
void nvgpu_kmem_fini(struct gk20a *g, int flags)
{
}
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