]) # LIBCFS_EXPORT_SAVE_STACK_TRACE_TSK
#
+# LIBCFS_LOCKDEP_IS_HELD
+#
+# Kernel v4.15-rc8-106-g08f36ff64234
+# lockdep: Make lockdep checking constant
+#
+AC_DEFUN([LIBCFS_LOCKDEP_IS_HELD], [
+tmp_flags="$EXTRA_KCFLAGS"
+EXTRA_KCFLAGS="-Werror"
+LB_CHECK_COMPILE([if 'lockdep_is_held()' uses const argument],
+lockdep_is_held, [
+ #include <linux/lockdep.h>
+],[
+#ifdef CONFIG_LOCKDEP
+ const struct spinlock *lock = NULL;
+
+ lockdep_is_held(lock);
+#endif
+],[],[
+ AC_DEFINE(NEED_LOCKDEP_IS_HELD_DISCARD_CONST, 1,
+ [lockdep_is_held() argument is const])
+])
+EXTRA_KCFLAGS="$tmp_flags"
+]) # LIBCFS_LOCKDEP_IS_HELD
+
+#
# LIBCFS_TIMER_SETUP
#
# Kernel version 4.15 commit e99e88a9d2b067465adaa9c111ada99a041bef9a
EXTRA_KCFLAGS="-Werror"
LB_CHECK_COMPILE([if page cache uses Xarray],
xarray_support, [
- #include <linux/radix-tree.h>
+ #include <linux/xarray.h>
],[
- radix_tree_exceptional_entry(NULL);
+ xa_is_value(NULL);
],[
- AC_DEFINE(HAVE_RADIX_TREE_EXCEPTIONAL_ENTRY, 1,
- [kernel lacks 'xa_is_value'])
+ AC_DEFINE(HAVE_XARRAY_SUPPORT, 1,
+ [kernel Xarray implementation lacks 'xa_is_value'])
])
EXTRA_KCFLAGS="$tmp_flags"
]) # LIBCFS_XARRAY_SUPPORT
LIBCFS_NEW_KERNEL_READ
LIBCFS_EXPORT_SAVE_STACK_TRACE_TSK
# 4.15
+LIBCFS_LOCKDEP_IS_HELD
LIBCFS_TIMER_SETUP
# 4.16
LIBCFS_WAIT_VAR_EVENT