| dnl # |
| dnl # 2.6.36 API compatibility- Added usleep_range timer. |
| dnl # |
| dnl # usleep_range is a finer precision implementation of msleep |
| dnl # designed to be a drop-in replacement for udelay where a precise |
| dnl # sleep / busy-wait is unnecessary. |
| dnl # |
| AC_DEFUN([ZFS_AC_KERNEL_SRC_USLEEP_RANGE], [ |
| ZFS_LINUX_TEST_SRC([usleep_range], [ |
| #include <linux/delay.h> |
| ],[ |
| usleep_range(0, 0); |
| ]) |
| ]) |
| |
| AC_DEFUN([ZFS_AC_KERNEL_USLEEP_RANGE], [ |
| AC_MSG_CHECKING([whether usleep_range() is available]) |
| ZFS_LINUX_TEST_RESULT([usleep_range], [ |
| AC_MSG_RESULT(yes) |
| AC_DEFINE(HAVE_USLEEP_RANGE, 1, [usleep_range is available]) |
| ],[ |
| AC_MSG_RESULT(no) |
| ]) |
| ]) |
