config/kernel-blk-queue-discard.m4

   1 dnl #
   2 dnl # 2.6.32 - 4.x API,
   3 dnl #   blk_queue_discard()
   4 dnl #
   5 AC_DEFUN([ZFS_AC_KERNEL_BLK_QUEUE_DISCARD], [
   6         AC_MSG_CHECKING([whether blk_queue_discard() is available])
   7         ZFS_LINUX_TRY_COMPILE([
   8                 #include <linux/blkdev.h>
   9         ],[
  10                 struct request_queue *q __attribute__ ((unused)) = NULL;
  11                 int value __attribute__ ((unused));
  12
  13                 value = blk_queue_discard(q);
  14         ],[
  15                 AC_MSG_RESULT(yes)
  16                 AC_DEFINE(HAVE_BLK_QUEUE_DISCARD, 1,
  17                     [blk_queue_discard() is available])
  18         ],[
  19                 AC_MSG_RESULT(no)
  20         ])
  21 ])
  22
  23 dnl #
  24 dnl # 4.8 - 4.x API,
  25 dnl #   blk_queue_secure_erase()
  26 dnl #
  27 dnl # 2.6.36 - 4.7 API,
  28 dnl #   blk_queue_secdiscard()
  29 dnl #
  30 dnl # 2.6.x - 2.6.35 API,
  31 dnl #   Unsupported by kernel
  32 dnl #
  33 AC_DEFUN([ZFS_AC_KERNEL_BLK_QUEUE_SECURE_ERASE], [
  34         AC_MSG_CHECKING([whether blk_queue_secure_erase() is available])
  35         ZFS_LINUX_TRY_COMPILE([
  36                 #include <linux/blkdev.h>
  37         ],[
  38                 struct request_queue *q __attribute__ ((unused)) = NULL;
  39                 int value __attribute__ ((unused));
  40
  41                 value = blk_queue_secure_erase(q);
  42         ],[
  43                 AC_MSG_RESULT(yes)
  44                 AC_DEFINE(HAVE_BLK_QUEUE_SECURE_ERASE, 1,
  45                     [blk_queue_secure_erase() is available])
  46         ],[
  47                 AC_MSG_RESULT(no)
  48
  49                 AC_MSG_CHECKING([whether blk_queue_secdiscard() is available])
  50                 ZFS_LINUX_TRY_COMPILE([
  51                         #include <linux/blkdev.h>
  52                 ],[
  53                         struct request_queue *q __attribute__ ((unused)) = NULL;
  54                         int value __attribute__ ((unused));
  55
  56                         value = blk_queue_secdiscard(q);
  57                 ],[
  58                         AC_MSG_RESULT(yes)
  59                         AC_DEFINE(HAVE_BLK_QUEUE_SECDISCARD, 1,
  60                             [blk_queue_secdiscard() is available])
  61                 ],[
  62                         AC_MSG_RESULT(no)
  63                 ])
  64         ])
  65 ])