1dnl # 2dnl # 2.6.36 API compatibility- Added usleep_range timer. 3dnl # 4dnl # usleep_range is a finer precision implementation of msleep 5dnl # designed to be a drop-in replacement for udelay where a precise 6dnl # sleep / busy-wait is unnecessary. 7dnl # 8AC_DEFUN([ZFS_AC_KERNEL_SRC_USLEEP_RANGE], [ 9 ZFS_LINUX_TEST_SRC([usleep_range], [ 10 #include <linux/delay.h> 11 ],[ 12 usleep_range(0, 0); 13 ]) 14]) 15 16AC_DEFUN([ZFS_AC_KERNEL_USLEEP_RANGE], [ 17 AC_MSG_CHECKING([whether usleep_range() is available]) 18 ZFS_LINUX_TEST_RESULT([usleep_range], [ 19 AC_MSG_RESULT(yes) 20 ],[ 21 ZFS_LINUX_TEST_ERROR([usleep_range()]) 22 ]) 23]) 24