[PATCH 13/23] reboot-limit: save graphs in organized results/graphs directory

[Luis Chamberlain <mcgrof@kernel.org>]

Update the graph visualization to save output files in a more organized
location under workflows/demos/reboot-limit/results/graphs/. This keeps
the results directory better organized by separating raw data from
generated visualizations.

The analyze_results.py script now automatically creates the graphs
subdirectory if it doesn't exist, ensuring a clean directory structure
for the workflow results.

Generated-by: Claude AI
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
---
 scripts/workflows/demos/reboot-limit/analyze_results.py | 9 +++++++--
 workflows/demos/reboot-limit/Makefile                   | 2 +-
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/scripts/workflows/demos/reboot-limit/analyze_results.py b/scripts/workflows/demos/reboot-limit/analyze_results.py
index 8842b409..bfd6f41a 100755
--- a/scripts/workflows/demos/reboot-limit/analyze_results.py
+++ b/scripts/workflows/demos/reboot-limit/analyze_results.py
@@ -112,6 +112,11 @@ class RebootLimitAnalyzer:
             print("No data to plot")
             return
 
+        # Ensure the output directory exists
+        output_path = Path(output_file)
+        if output_path.parent != Path("."):
+            output_path.parent.mkdir(parents=True, exist_ok=True)
+
         # Create figure with subplots
         num_hosts = len(self.hosts_data)
         fig, axes = plt.subplots(num_hosts, 2, figsize=(14, 6 * num_hosts))
@@ -264,8 +269,8 @@ def main():
     parser.add_argument(
         "-o",
         "--output",
-        default="reboot_limit_analysis.png",
-        help="Output filename for plot (default: reboot_limit_analysis.png)",
+        default="workflows/demos/reboot-limit/results/graphs/reboot_limit_analysis.png",
+        help="Output filename for plot (default: workflows/demos/reboot-limit/results/graphs/reboot_limit_analysis.png)",
     )
     parser.add_argument(
         "--no-plot", action="store_true", help="Skip plotting, only show summary"
diff --git a/workflows/demos/reboot-limit/Makefile b/workflows/demos/reboot-limit/Makefile
index f1411daf..abc5b3d0 100644
--- a/workflows/demos/reboot-limit/Makefile
+++ b/workflows/demos/reboot-limit/Makefile
@@ -194,7 +194,7 @@ reboot-limit-results:
 	$(Q)python3 scripts/workflows/demos/reboot-limit/analyze_results.py
 
 reboot-limit-graph: reboot-limit-results
-	$(Q)echo "Graph saved to reboot_limit_analysis.png"
+	$(Q)echo "Graph saved to workflows/demos/reboot-limit/results/graphs/reboot_limit_analysis.png"
 
 reboot-limit-help-menu:
 	@echo "reboot-limit options:"
-- 
2.47.2