74 lines
1.8 KiB
Text
74 lines
1.8 KiB
Text
|
dnl # 4.14-rc3 API change
|
||
|
|
dnl # https://lwn.net/Articles/735887/
|
||
|
|
dnl #
|
||
|
|
dnl # Check if timer_list.func get passed a timer_list or an unsigned long
|
||
|
|
dnl # (older kernels). Also sanity check the from_timer() and timer_setup()
|
||
|
|
dnl # macros are available as well, since they will be used in the same newer
|
||
|
|
dnl # kernels that support the new timer_list.func signature.
|
||
|
|
dnl #
|
||
|
|
dnl # Also check for the existance of flags in struct timer_list, they were
|
||
|
|
dnl # added in 4.1-rc8 via 0eeda71bc30d.
|
||
|
|
|
||
|
|
AC_DEFUN([ZFS_AC_KERNEL_TIMER_SETUP], [
|
||
|
|
AC_MSG_CHECKING([whether timer_setup() is available])
|
||
|
|
tmp_flags="$EXTRA_KCFLAGS"
|
||
|
|
EXTRA_KCFLAGS="-Werror"
|
||
|
|
|
||
|
|
ZFS_LINUX_TRY_COMPILE([
|
||
|
|
#include <linux/timer.h>
|
||
|
|
|
||
|
|
struct my_task_timer {
|
||
|
|
struct timer_list timer;
|
||
|
|
int data;
|
||
|
|
};
|
||
|
|
|
||
|
|
void task_expire(struct timer_list *tl)
|
||
|
|
{
|
||
|
|
struct my_task_timer *task_timer = from_timer(task_timer, tl, timer);
|
||
|
|
task_timer->data = 42;
|
||
|
|
}
|
||
|
|
],[
|
||
|
|
struct my_task_timer task_timer;
|
||
|
|
timer_setup(&task_timer.timer, task_expire, 0);
|
||
|
|
],[
|
||
|
|
AC_MSG_RESULT(yes)
|
||
|
|
AC_DEFINE(HAVE_KERNEL_TIMER_SETUP, 1,
|
||
|
|
[timer_setup() is available])
|
||
|
|
],[
|
||
|
|
AC_MSG_RESULT(no)
|
||
|
|
])
|
||
|
|
|
||
|
|
AC_MSG_CHECKING([whether timer function expects timer_list])
|
||
|
|
|
||
|
|
ZFS_LINUX_TRY_COMPILE([
|
||
|
|
#include <linux/timer.h>
|
||
|
|
void task_expire(struct timer_list *tl) {}
|
||
|
|
],[
|
||
|
|
struct timer_list tl;
|
||
|
|
tl.function = task_expire;
|
||
|
|
],[
|
||
|
|
AC_MSG_RESULT(yes)
|
||
|
|
AC_DEFINE(HAVE_KERNEL_TIMER_FUNCTION_TIMER_LIST, 1,
|
||
|
|
[timer_list.function gets a timer_list])
|
||
|
|
],[
|
||
|
|
AC_MSG_RESULT(no)
|
||
|
|
])
|
||
|
|
|
||
|
|
AC_MSG_CHECKING([whether struct timer_list has flags])
|
||
|
|
|
||
|
|
ZFS_LINUX_TRY_COMPILE([
|
||
|
|
#include <linux/timer.h>
|
||
|
|
],[
|
||
|
|
struct timer_list tl;
|
||
|
|
tl.flags = 2;
|
||
|
|
],[
|
||
|
|
AC_MSG_RESULT(yes)
|
||
|
|
AC_DEFINE(HAVE_KERNEL_TIMER_LIST_FLAGS, 1,
|
||
|
|
[struct timer_list has a flags member])
|
||
|
|
],[
|
||
|
|
AC_MSG_RESULT(no)
|
||
|
|
])
|
||
|
|
|
||
|
|
EXTRA_KCFLAGS="$tmp_flags"
|
||
|
|
])
|