2018-02-07 19:50:24 +00:00
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dnl #
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dnl # 4.15 API change
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dnl # https://lkml.org/lkml/2017/11/25/90
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dnl # Check if timer_list.func get passed a timer_list or an unsigned long
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dnl # (older kernels). Also sanity check the from_timer() and timer_setup()
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dnl # macros are available as well, since they will be used in the same newer
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dnl # kernels that support the new timer_list.func signature.
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dnl #
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2018-02-16 01:53:18 +00:00
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AC_DEFUN([ZFS_AC_KERNEL_TIMER_FUNCTION_TIMER_LIST], [
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2018-02-07 19:50:24 +00:00
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AC_MSG_CHECKING([whether timer_list.function gets a timer_list])
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tmp_flags="$EXTRA_KCFLAGS"
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EXTRA_KCFLAGS="-Werror"
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2018-02-16 01:53:18 +00:00
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ZFS_LINUX_TRY_COMPILE([
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2018-02-07 19:50:24 +00:00
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#include <linux/timer.h>
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void task_expire(struct timer_list *tl) {}
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],[
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#ifndef from_timer
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#error "No from_timer() macro"
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#endif
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struct timer_list timer;
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timer.function = task_expire;
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timer_setup(&timer, NULL, 0);
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_KERNEL_TIMER_FUNCTION_TIMER_LIST, 1,
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[timer_list.function gets a timer_list])
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],[
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AC_MSG_RESULT(no)
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])
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EXTRA_KCFLAGS="$tmp_flags"
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])
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