module/spl/spl-vmem.c

   1 /*
   2  *  Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
   3  *  Copyright (C) 2007 The Regents of the University of California.
   4  *  Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
   5  *  Written by Brian Behlendorf <behlendorf1@llnl.gov>.
   6  *  UCRL-CODE-235197
   7  *
   8  *  This file is part of the SPL, Solaris Porting Layer.
   9  *  For details, see <http://zfsonlinux.org/>.
  10  *
  11  *  The SPL is free software; you can redistribute it and/or modify it
  12  *  under the terms of the GNU General Public License as published by the
  13  *  Free Software Foundation; either version 2 of the License, or (at your
  14  *  option) any later version.
  15  *
  16  *  The SPL is distributed in the hope that it will be useful, but WITHOUT
  17  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  18  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  19  *  for more details.
  20  *
  21  *  You should have received a copy of the GNU General Public License along
  22  *  with the SPL.  If not, see <http://www.gnu.org/licenses/>.
  23  */
  24
  25 #include <sys/debug.h>
  26 #include <sys/vmem.h>
  27 #include <linux/mm_compat.h>
  28 #include <linux/module.h>
  29
  30 vmem_t *heap_arena = NULL;
  31 EXPORT_SYMBOL(heap_arena);
  32
  33 vmem_t *zio_alloc_arena = NULL;
  34 EXPORT_SYMBOL(zio_alloc_arena);
  35
  36 vmem_t *zio_arena = NULL;
  37 EXPORT_SYMBOL(zio_arena);
  38
  39 size_t
  40 vmem_size(vmem_t *vmp, int typemask)
  41 {
  42         ASSERT3P(vmp, ==, NULL);
  43         ASSERT3S(typemask & VMEM_ALLOC, ==, VMEM_ALLOC);
  44         ASSERT3S(typemask & VMEM_FREE, ==, VMEM_FREE);
  45
  46         return (VMALLOC_TOTAL);
  47 }
  48 EXPORT_SYMBOL(vmem_size);
  49
  50 /*
  51  * Public vmem_alloc(), vmem_zalloc() and vmem_free() interfaces.
  52  */
  53 void *
  54 spl_vmem_alloc(size_t size, int flags, const char *func, int line)
  55 {
  56         ASSERT0(flags & ~KM_PUBLIC_MASK);
  57
  58         flags |= KM_VMEM;
  59
  60 #if !defined(DEBUG_KMEM)
  61         return (spl_kmem_alloc_impl(size, flags, NUMA_NO_NODE));
  62 #elif !defined(DEBUG_KMEM_TRACKING)
  63         return (spl_kmem_alloc_debug(size, flags, NUMA_NO_NODE));
  64 #else
  65         return (spl_kmem_alloc_track(size, flags, func, line, NUMA_NO_NODE));
  66 #endif
  67 }
  68 EXPORT_SYMBOL(spl_vmem_alloc);
  69
  70 void *
  71 spl_vmem_zalloc(size_t size, int flags, const char *func, int line)
  72 {
  73         ASSERT0(flags & ~KM_PUBLIC_MASK);
  74
  75         flags |= (KM_VMEM | KM_ZERO);
  76
  77 #if !defined(DEBUG_KMEM)
  78         return (spl_kmem_alloc_impl(size, flags, NUMA_NO_NODE));
  79 #elif !defined(DEBUG_KMEM_TRACKING)
  80         return (spl_kmem_alloc_debug(size, flags, NUMA_NO_NODE));
  81 #else
  82         return (spl_kmem_alloc_track(size, flags, func, line, NUMA_NO_NODE));
  83 #endif
  84 }
  85 EXPORT_SYMBOL(spl_vmem_zalloc);
  86
  87 void
  88 spl_vmem_free(const void *buf, size_t size)
  89 {
  90 #if !defined(DEBUG_KMEM)
  91         return (spl_kmem_free_impl(buf, size));
  92 #elif !defined(DEBUG_KMEM_TRACKING)
  93         return (spl_kmem_free_debug(buf, size));
  94 #else
  95         return (spl_kmem_free_track(buf, size));
  96 #endif
  97 }
  98 EXPORT_SYMBOL(spl_vmem_free);
  99
 100 int
 101 spl_vmem_init(void)
 102 {
 103         return (0);
 104 }
 105
 106 void
 107 spl_vmem_fini(void)
 108 {
 109 }