verification/dot2k: Add support for name and description options

The dot2k command includes options to set a model name with -n and a
description with -D, however those are not used in practice.

This patch allows to specify a custom model name (by default the name of
the dot file without extension) and a description which overrides the
one in the C file.

Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: John Kacur <jkacur@redhat.com>
Link: https://lore.kernel.org/20241227144752.362911-5-gmonaco@redhat.com
Signed-off-by: Gabriele Monaco <gmonaco@redhat.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>

Author: glemco

tools/verification/dot2/automata.py

@@ -19,9 +19,9 @@ class Automata:
 
     invalid_state_str = "INVALID_STATE"
 
-    def __init__(self, file_path):
+    def __init__(self, file_path, model_name=None):
         self.__dot_path = file_path
-        self.name = self.__get_model_name()
+        self.name = model_name or self.__get_model_name()
         self.__dot_lines = self.__open_dot()
         self.states, self.initial_state, self.final_states = self.__get_state_variables()
         self.events = self.__get_event_variables()

tools/verification/dot2/dot2c.py

@@ -22,8 +22,8 @@ class Dot2c(Automata):
     struct_automaton_def = "automaton"
     var_automaton_def = "aut"
 
-    def __init__(self, file_path):
-        super().__init__(file_path)
+    def __init__(self, file_path, model_name=None):
+        super().__init__(file_path, model_name)
         self.line_length = 100
 
     def __buff_to_string(self, buff):

tools/verification/dot2/dot2k

@@ -25,16 +25,12 @@ if __name__ == '__main__':
 
     print("Opening and parsing the dot file %s" % params.dot_file)
     try:
-        monitor=dot2k(params.dot_file, params.monitor_type)
+        monitor=dot2k(params.dot_file, params.monitor_type, vars(params))
     except Exception as e:
         print('Error: '+ str(e))
         print("Sorry : :-(")
         sys.exit(1)
 
-    # easier than using argparse action.
-    if params.model_name != None:
-        print(params.model_name)
-
     print("Writing the monitor into the directory %s" % monitor.name)
     monitor.print_files()
     print("Almost done, checklist")

tools/verification/dot2/dot2k.py

@@ -17,17 +17,18 @@ class dot2k(Dot2c):
     monitor_templates_dir = "dot2/dot2k_templates/"
     monitor_type = "per_cpu"
 
-    def __init__(self, file_path, MonitorType):
-        super().__init__(file_path)
+    def __init__(self, file_path, MonitorType, extra_params={}):
+        super().__init__(file_path, extra_params.get("model_name"))
 
         self.monitor_type = self.monitor_types.get(MonitorType)
         if self.monitor_type is None:
-            raise Exception("Unknown monitor type: %s" % MonitorType)
+            raise ValueError("Unknown monitor type: %s" % MonitorType)
 
         self.monitor_type = MonitorType
         self.__fill_rv_templates_dir()
         self.main_c = self.__open_file(self.monitor_templates_dir + "main.c")
         self.enum_suffix = "_%s" % self.name
+        self.description = extra_params.get("description", self.name) or "auto-generated"
 
     def __fill_rv_templates_dir(self):
 
@@ -114,6 +115,7 @@ def fill_main_c(self):
         main_c = main_c.replace("%%TRACEPOINT_HANDLERS_SKEL%%", tracepoint_handlers)
         main_c = main_c.replace("%%TRACEPOINT_ATTACH%%", tracepoint_attach)
         main_c = main_c.replace("%%TRACEPOINT_DETACH%%", tracepoint_detach)
+        main_c = main_c.replace("%%DESCRIPTION%%", self.description)
 
         return main_c
 

tools/verification/dot2/dot2k_templates/main.c

@@ -65,7 +65,7 @@ static void disable_%%MODEL_NAME%%(void)
  */
 static struct rv_monitor rv_%%MODEL_NAME%% = {
 	.name = "%%MODEL_NAME%%",
-	.description = "auto-generated %%MODEL_NAME%%",
+	.description = "%%DESCRIPTION%%",
 	.enable = enable_%%MODEL_NAME%%,
 	.disable = disable_%%MODEL_NAME%%,
 	.reset = da_monitor_reset_all_%%MODEL_NAME%%,
@@ -88,4 +88,4 @@ module_exit(unregister_%%MODEL_NAME%%);
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("dot2k: auto-generated");
-MODULE_DESCRIPTION("%%MODEL_NAME%%");
+MODULE_DESCRIPTION("%%MODEL_NAME%%: %%DESCRIPTION%%");