Merge tag 'acpi-5.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
[sfrench/cifs-2.6.git] / net / xfrm / xfrm_hash.c
1 // SPDX-License-Identifier: GPL-2.0
2 /* xfrm_hash.c: Common hash table code.
3  *
4  * Copyright (C) 2006 David S. Miller (davem@davemloft.net)
5  */
6
7 #include <linux/kernel.h>
8 #include <linux/mm.h>
9 #include <linux/memblock.h>
10 #include <linux/vmalloc.h>
11 #include <linux/slab.h>
12 #include <linux/xfrm.h>
13
14 #include "xfrm_hash.h"
15
16 struct hlist_head *xfrm_hash_alloc(unsigned int sz)
17 {
18         struct hlist_head *n;
19
20         if (sz <= PAGE_SIZE)
21                 n = kzalloc(sz, GFP_KERNEL);
22         else if (hashdist)
23                 n = vzalloc(sz);
24         else
25                 n = (struct hlist_head *)
26                         __get_free_pages(GFP_KERNEL | __GFP_NOWARN | __GFP_ZERO,
27                                          get_order(sz));
28
29         return n;
30 }
31
32 void xfrm_hash_free(struct hlist_head *n, unsigned int sz)
33 {
34         if (sz <= PAGE_SIZE)
35                 kfree(n);
36         else if (hashdist)
37                 vfree(n);
38         else
39                 free_pages((unsigned long)n, get_order(sz));
40 }