config/kernel-sched.m4

   1 dnl #
   2 dnl # 3.9 API change,
   3 dnl # Moved things from linux/sched.h to linux/sched/rt.h
   4 dnl #
   5 AC_DEFUN([ZFS_AC_KERNEL_SRC_SCHED_RT_HEADER], [
   6         ZFS_LINUX_TEST_SRC([sched_rt_header], [
   7                 #include <linux/sched.h>
   8                 #include <linux/sched/rt.h>
   9         ],[
  10                 return 0;
  11         ])
  12 ])
  13
  14 AC_DEFUN([ZFS_AC_KERNEL_SCHED_RT_HEADER], [
  15         AC_MSG_CHECKING([whether header linux/sched/rt.h exists])
  16         ZFS_LINUX_TEST_RESULT([sched_rt_header], [
  17                 AC_MSG_RESULT(yes)
  18         ],[
  19                 ZFS_LINUX_TEST_ERROR([sched_rt_header])
  20         ])
  21 ])
  22
  23 dnl #
  24 dnl # 4.11 API change,
  25 dnl # Moved things from linux/sched.h to linux/sched/signal.h
  26 dnl #
  27 AC_DEFUN([ZFS_AC_KERNEL_SRC_SCHED_SIGNAL_HEADER], [
  28         ZFS_LINUX_TEST_SRC([sched_signal_header], [
  29                 #include <linux/sched.h>
  30                 #include <linux/sched/signal.h>
  31         ],[
  32                 return 0;
  33         ])
  34 ])
  35
  36 AC_DEFUN([ZFS_AC_KERNEL_SCHED_SIGNAL_HEADER], [
  37         AC_MSG_CHECKING([whether header linux/sched/signal.h exists])
  38         ZFS_LINUX_TEST_RESULT([sched_signal_header], [
  39                 AC_DEFINE(HAVE_SCHED_SIGNAL_HEADER, 1,
  40                     [linux/sched/signal.h exists])
  41                 AC_MSG_RESULT(yes)
  42         ],[
  43                 AC_MSG_RESULT(no)
  44         ])
  45 ])
  46
  47 dnl #
  48 dnl # 3.19 API change
  49 dnl # The io_schedule_timeout() function is present in all 2.6.32 kernels
  50 dnl # but it was not exported until Linux 3.19.  The RHEL 7.x kernels which
  51 dnl # are based on a 3.10 kernel do export this symbol.
  52 dnl #
  53 AC_DEFUN([ZFS_AC_KERNEL_SRC_IO_SCHEDULE_TIMEOUT], [
  54         ZFS_LINUX_TEST_SRC([io_schedule_timeout], [
  55                 #include <linux/sched.h>
  56         ], [
  57                 (void) io_schedule_timeout(1);
  58         ])
  59 ])
  60
  61 AC_DEFUN([ZFS_AC_KERNEL_IO_SCHEDULE_TIMEOUT], [
  62         AC_MSG_CHECKING([whether io_schedule_timeout() is available])
  63         ZFS_LINUX_TEST_RESULT_SYMBOL([io_schedule_timeout],
  64         [io_schedule_timeout], [], [
  65                 AC_MSG_RESULT(yes)
  66                 AC_DEFINE(HAVE_IO_SCHEDULE_TIMEOUT, 1, [yes])
  67         ],[
  68                 AC_MSG_RESULT(no)
  69         ])
  70 ])
  71
  72 AC_DEFUN([ZFS_AC_KERNEL_SRC_SCHED], [
  73         ZFS_AC_KERNEL_SRC_SCHED_RT_HEADER
  74         ZFS_AC_KERNEL_SRC_SCHED_SIGNAL_HEADER
  75         ZFS_AC_KERNEL_SRC_IO_SCHEDULE_TIMEOUT
  76 ])
  77
  78 AC_DEFUN([ZFS_AC_KERNEL_SCHED], [
  79         ZFS_AC_KERNEL_SCHED_RT_HEADER
  80         ZFS_AC_KERNEL_SCHED_SIGNAL_HEADER
  81         ZFS_AC_KERNEL_IO_SCHEDULE_TIMEOUT
  82 ])