LXR uboot/lib/linux

   1
   2#include <common.h>
   3#include <malloc.h>
   4#include <memalign.h>
   5#include <asm/cache.h>
   6#include <linux/compat.h>
   7
   8struct p_current cur = {
   9        .pid = 1,
  10};
  11__maybe_unused struct p_current *current = &cur;
  12
  13unsigned long copy_from_user(void *dest, const void *src,
  14                     unsigned long count)
  15{
  16        memcpy((void *)dest, (void *)src, count);
  17        return 0;
  18}
  19
  20void *kmalloc(size_t size, int flags)
  21{
  22        void *p;
  23
  24        p = malloc_cache_aligned(size);
  25        if (p && flags & __GFP_ZERO)
  26                memset(p, 0, size);
  27
  28        return p;
  29}
  30
  31struct kmem_cache *get_mem(int element_sz)
  32{
  33        struct kmem_cache *ret;
  34
  35        ret = memalign(ARCH_DMA_MINALIGN, sizeof(struct kmem_cache));
  36        ret->sz = element_sz;
  37
  38        return ret;
  39}
  40
  41void *kmem_cache_alloc(struct kmem_cache *obj, int flag)
  42{
  43        return malloc_cache_aligned(obj->sz);
  44}
  45
  46/**
  47 * kmemdup - duplicate region of memory
  48 *
  49 * @src: memory region to duplicate
  50 * @len: memory region length
  51 * @gfp: GFP mask to use
  52 *
  53 * Return: newly allocated copy of @src or %NULL in case of error
  54 */
  55void *kmemdup(const void *src, size_t len, gfp_t gfp)
  56{
  57        void *p;
  58
  59        p = kmalloc(len, gfp);
  60        if (p)
  61                memcpy(p, src, len);
  62        return p;
  63}
  64