3 files changed, 49 insertions, 3 deletions

diff --git a/scripts/lib/build_perf/html/report.html b/scripts/lib/build_perf/html/report.html
index e56186c958..291ad9d721 100644
--- a/scripts/lib/build_perf/html/report.html
+++ b/scripts/lib/build_perf/html/report.html
@@ -250,6 +250,26 @@ h3 {
                 </td>
               </tr>
             </table>
+
+            {# Recipe version differences #}
+            {% if measurement.buildstats.ver_diff %}
+              <div style="margin-top: 16px">Recipe version changes</div>
+              <table class="details">
+                {% for head, recipes in measurement.buildstats.ver_diff.items() %}
+                  <tr>
+                    <th colspan="2">{{ head }}</th>
+                  </tr>
+                  {% for name, info in recipes|sort %}
+                    <tr>
+                      <td>{{ name }}</td>
+                      <td>{{ info }}</td>
+                    </tr>
+                  {% endfor %}
+                {% endfor %}
+              </table>
+            {% else %}
+              <div style="margin-top: 16px">No recipe version changes detected</div>
+            {% endif %}
           {% endif %}
         </div>
       {% endfor %}
diff --git a/scripts/lib/buildstats.py b/scripts/lib/buildstats.py
index b1c9e617c6..d9aadf3cb8 100644
--- a/scripts/lib/buildstats.py
+++ b/scripts/lib/buildstats.py
@@ -157,9 +157,9 @@ class BSRecipe(object):
         self.version = version
         self.revision = revision
         if epoch is None:
-            self.nevr = "{}-{}-{}".format(name, version, revision)
+            self.evr = "{}-{}".format(version, revision)
         else:
-            self.nevr = "{}-{}_{}-{}".format(name, epoch, version, revision)
+            self.evr = "{}_{}-{}".format(epoch, version, revision)
         self.tasks = {}
 
     def aggregate(self, bsrecipe):
@@ -176,6 +176,10 @@ class BSRecipe(object):
                 self.tasks[taskname] = BSTaskAggregate([self.tasks[taskname]])
             self.tasks[taskname].append(taskdata)
 
+    @property
+    def nevr(self):
+        return self.name + '-' + self.evr
+
 
 class BuildStats(dict):
     """Class representing buildstats of one build"""
@@ -323,6 +327,7 @@ class BSVerDiff(object):
         self.vchanged = {}
         self.rchanged = {}
         self.unchanged = {}
+        self.empty_diff = False
 
         common = recipes2.intersection(recipes1)
         if common:
@@ -336,3 +341,9 @@ class BSVerDiff(object):
                     self.rchanged[recipe] = rdiff
                 else:
                     self.unchanged[recipe] = rdiff
+
+        if len(recipes1) == len(recipes2) == len(self.unchanged):
+            self.empty_diff = True
+
+    def __bool__(self):
+        return not self.empty_diff
diff --git a/scripts/oe-build-perf-report b/scripts/oe-build-perf-report
index 0b2f730e57..ac88f0fce5 100755
--- a/scripts/oe-build-perf-report
+++ b/scripts/oe-build-perf-report
@@ -32,7 +32,7 @@ from build_perf.report import (metadata_xml_to_json, results_xml_to_json,
                                aggregate_data, aggregate_metadata, measurement_stats,
                                AggregateTestData)
 from build_perf import html
-from buildstats import BuildStats, diff_buildstats
+from buildstats import BuildStats, diff_buildstats, BSVerDiff
 
 scriptpath.add_oe_lib_path()
 
@@ -341,6 +341,7 @@ class BSSummary(object):
         self.top_consumer = None
         self.top_decrease = None
         self.top_increase = None
+        self.ver_diff = OrderedDict()
 
         tasks_diff = diff_buildstats(bs1, bs2, 'cputime')
 
@@ -353,6 +354,20 @@ class BSSummary(object):
         self.top_decrease = tasks_diff[0:5]
         self.top_increase = tasks_diff[-5:]
 
+        # Compare recipe versions and prepare data for display
+        ver_diff = BSVerDiff(bs1, bs2)
+        if ver_diff:
+            if ver_diff.new:
+                self.ver_diff['New recipes'] = [(n, r.evr) for n, r in ver_diff.new.items()]
+            if ver_diff.dropped:
+                self.ver_diff['Dropped recipes'] = [(n, r.evr) for n, r in ver_diff.dropped.items()]
+            if ver_diff.echanged:
+                self.ver_diff['Epoch changed'] = [(n, "{} &rarr; {}".format(r.left.evr, r.right.evr)) for n, r in ver_diff.echanged.items()]
+            if ver_diff.vchanged:
+                self.ver_diff['Version changed'] = [(n, "{} &rarr; {}".format(r.left.version, r.right.version)) for n, r in ver_diff.vchanged.items()]
+            if ver_diff.rchanged:
+                self.ver_diff['Revision changed'] = [(n, "{} &rarr; {}".format(r.left.evr, r.right.evr)) for n, r in ver_diff.rchanged.items()]
+
 
 def print_html_report(data, id_comp, buildstats):
     """Print report in html format"""