2025-12-20 16:45:07 +11:00
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dnl # SPDX-License-Identifier: CDDL-1.0
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2018-02-07 11:50:24 -08:00
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dnl #
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2019-10-01 12:50:34 -07:00
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dnl # 2.6.36 API compatibility- Added usleep_range timer.
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dnl #
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2018-02-07 11:50:24 -08:00
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dnl # usleep_range is a finer precision implementation of msleep
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dnl # designed to be a drop-in replacement for udelay where a precise
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dnl # sleep / busy-wait is unnecessary.
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dnl #
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2019-10-01 12:50:34 -07:00
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AC_DEFUN([ZFS_AC_KERNEL_SRC_USLEEP_RANGE], [
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ZFS_LINUX_TEST_SRC([usleep_range], [
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2018-02-07 11:50:24 -08:00
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#include <linux/delay.h>
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],[
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usleep_range(0, 0);
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2019-10-01 12:50:34 -07:00
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])
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])
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AC_DEFUN([ZFS_AC_KERNEL_USLEEP_RANGE], [
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AC_MSG_CHECKING([whether usleep_range() is available])
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ZFS_LINUX_TEST_RESULT([usleep_range], [
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2018-02-07 11:50:24 -08:00
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AC_MSG_RESULT(yes)
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],[
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2019-11-12 08:59:06 -08:00
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ZFS_LINUX_TEST_ERROR([usleep_range()])
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2018-02-07 11:50:24 -08:00
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])
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])
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