[PATCH] ref-manual: document "RM_WORK_EXCLUDE_ITEMS" for rm_work.bbclass

Add an explanation of RM_WORK_EXCLUDE_ITEMS for rm_work.bbclass.

Signed-off-by: Robert P. J. Day <[email protected]>

---

diff --git a/documentation/ref-manual/classes.rst b/documentation/ref-manual/classes.rst
index 95e07f85a..36b730823 100644
--- a/documentation/ref-manual/classes.rst
+++ b/documentation/ref-manual/classes.rst
@@ -2614,6 +2614,12 @@ which can also be set in your ``local.conf`` file. Here is an example::

    RM_WORK_EXCLUDE += "busybox glibc"

+Finally, if you are using this class for a recipe but want to prevent BitBake
+from deleting specific folders or files in that recipe's ``${WORKDIR}``
+(other than ``temp``), you can preserve those folders or files with::
+
+   RM_WORK_EXCLUDE_ITEMS += "stuff_to_keep"
+
 .. _ref-classes-rootfs*:

 ``rootfs*``