Split spl-build.m4

[mirror_spl.git] / config / kernel-sched.m4

diff --git a/config/kernel-sched.m4 b/config/kernel-sched.m4
new file mode 100644 (file)
index 0000000..5ae2167
--- /dev/null
+++ b/config/kernel-sched.m4
@@ -0,0 +1,56 @@
+dnl #
+dnl # 3.9 API change,
+dnl # Moved things from linux/sched.h to linux/sched/rt.h
+dnl #
+AC_DEFUN([SPL_AC_SCHED_RT_HEADER],
+       [AC_MSG_CHECKING([whether header linux/sched/rt.h exists])
+       SPL_LINUX_TRY_COMPILE([
+               #include <linux/sched.h>
+               #include <linux/sched/rt.h>
+       ],[
+               return 0;
+       ],[
+               AC_DEFINE(HAVE_SCHED_RT_HEADER, 1, [linux/sched/rt.h exists])
+               AC_MSG_RESULT(yes)
+       ],[
+               AC_MSG_RESULT(no)
+       ])
+])
+
+dnl #
+dnl # 4.11 API change,
+dnl # Moved things from linux/sched.h to linux/sched/signal.h
+dnl #
+AC_DEFUN([SPL_AC_SCHED_SIGNAL_HEADER],
+       [AC_MSG_CHECKING([whether header linux/sched/signal.h exists])
+       SPL_LINUX_TRY_COMPILE([
+               #include <linux/sched.h>
+               #include <linux/sched/signal.h>
+       ],[
+               return 0;
+       ],[
+               AC_DEFINE(HAVE_SCHED_SIGNAL_HEADER, 1, [linux/sched/signal.h exists])
+               AC_MSG_RESULT(yes)
+       ],[
+               AC_MSG_RESULT(no)
+       ])
+])
+dnl #
+dnl # 3.19 API change
+dnl # The io_schedule_timeout() function is present in all 2.6.32 kernels
+dnl # but it was not exported until Linux 3.19.  The RHEL 7.x kernels which
+dnl # are based on a 3.10 kernel do export this symbol.
+dnl #
+AC_DEFUN([SPL_AC_IO_SCHEDULE_TIMEOUT], [
+       AC_MSG_CHECKING([whether io_schedule_timeout() is available])
+       SPL_LINUX_TRY_COMPILE_SYMBOL([
+               #include <linux/sched.h>
+       ], [
+               (void) io_schedule_timeout(1);
+       ], [io_schedule_timeout], [], [
+               AC_MSG_RESULT(yes)
+               AC_DEFINE(HAVE_IO_SCHEDULE_TIMEOUT, 1, [yes])
+       ],[
+               AC_MSG_RESULT(no)
+       ])
+])