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       1                 :            : /* xfrm_hash.c: Common hash table code.
       2                 :            :  *
       3                 :            :  * Copyright (C) 2006 David S. Miller (davem@davemloft.net)
       4                 :            :  */
       5                 :            : 
       6                 :            : #include <linux/kernel.h>
       7                 :            : #include <linux/mm.h>
       8                 :            : #include <linux/bootmem.h>
       9                 :            : #include <linux/vmalloc.h>
      10                 :            : #include <linux/slab.h>
      11                 :            : #include <linux/xfrm.h>
      12                 :            : 
      13                 :            : #include "xfrm_hash.h"
      14                 :            : 
      15                 :          0 : struct hlist_head *xfrm_hash_alloc(unsigned int sz)
      16                 :            : {
      17                 :            :         struct hlist_head *n;
      18                 :            : 
      19         [ #  # ]:          0 :         if (sz <= PAGE_SIZE)
      20                 :            :                 n = kzalloc(sz, GFP_KERNEL);
      21         [ #  # ]:          0 :         else if (hashdist)
      22                 :          0 :                 n = vzalloc(sz);
      23                 :            :         else
      24                 :          0 :                 n = (struct hlist_head *)
      25 [ #  # ][ #  # ]:          0 :                         __get_free_pages(GFP_KERNEL | __GFP_NOWARN | __GFP_ZERO,
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      26                 :          0 :                                          get_order(sz));
      27                 :            : 
      28                 :          0 :         return n;
      29                 :            : }
      30                 :            : 
      31                 :          0 : void xfrm_hash_free(struct hlist_head *n, unsigned int sz)
      32                 :            : {
      33         [ #  # ]:          0 :         if (sz <= PAGE_SIZE)
      34                 :          0 :                 kfree(n);
      35         [ #  # ]:          0 :         else if (hashdist)
      36                 :          0 :                 vfree(n);
      37                 :            :         else
      38 [ #  # ][ #  # ]:          0 :                 free_pages((unsigned long)n, get_order(sz));
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      39                 :          0 : }