update README.md

README.md

@@ -2,3 +2,38 @@ gdb-buildbot
 ============
 
 gdb buildbot configuration
+
+
+This is a buildbot configuration for gdb.
+
+Currently it is a bit out of date.  For example, native-gdbserver.exp
+is now in-tree and doesn't need any special configuration.
+
+This configuration makes it easy to deploy slaves that test gdb in
+different scenarios.  For example there is a canned way to run the
+test suite using gdbserver.  It is also easy to add new
+configurations.  This is important because gdb can be used in many
+different ways.
+
+It collects the .sum files and establishes a baseline.  The baselines
+are then "ratcheted": new PASSes are automatically added to the
+baseline for a given slave configuration, and any regressions are
+flagged as build failures.
+
+This also provides a way to retrieve the .sum files for any given
+revision and configuration.  This can be handy for doing local
+comparisons.
+
+
+To do items include:
+
+* Add more configurations.  For example, dwz, split debuginfo, etc.
+
+* Store the .sum files in a nicer way.  Right now they accumulate and
+  are not de-duplicated.  Just de-duplicating would help a bit, but
+  perhaps a real database of some form would be nicer.
+
+* Provide a way to do nice web-based comparisons across different
+  configurations.
+
+* Host it somewhere :-)