cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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xfrm_hash.c (803B)

      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
     16struct 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
     32void 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}