verification/rvgen: Add support for per-obj monitors

The special per-object monitor type was just introduced in RV, this
requires the user to define some functions and type specific to the
object.

Adapt rvgen to add stub definitions for the monitor_target type and
other modifications required to create per-object monitors.

Reviewed-by: Nam Cao <namcao@linutronix.de>
Link: https://lore.kernel.org/r/20260330111010.153663-10-gmonaco@redhat.com
Signed-off-by: Gabriele Monaco <gmonaco@redhat.com>

Author: glemco

tools/verification/rvgen/rvgen/dot2k.py

@@ -27,6 +27,8 @@ def __init__(self, file_path, MonitorType, extra_params={}):
     def fill_monitor_type(self) -> str:
         buff = [ self.monitor_type.upper() ]
         buff += self._fill_timer_type()
+        if self.monitor_type == "per_obj":
+            buff.append("typedef /* XXX: define the target type */ *monitor_target;")
         return "\n".join(buff)
 
     def fill_tracepoint_handlers_skel(self) -> str:
@@ -45,6 +47,10 @@ def fill_tracepoint_handlers_skel(self) -> str:
             if self.monitor_type == "per_task":
                 buff.append("\tstruct task_struct *p = /* XXX: how do I get p? */;");
                 buff.append("\tda_%s(p, %s%s);" % (handle, event, self.enum_suffix));
+            elif self.monitor_type == "per_obj":
+                buff.append("\tint id = /* XXX: how do I get the id? */;")
+                buff.append("\tmonitor_target t = /* XXX: how do I get t? */;")
+                buff.append(f"\tda_{handle}(id, t, {event}{self.enum_suffix});")
             else:
                 buff.append("\tda_%s(%s%s);" % (handle, event, self.enum_suffix));
             buff.append("}")
@@ -92,13 +98,16 @@ def fill_model_h(self) -> str:
 
         return '\n'.join(buff)
 
+    def _is_id_monitor(self) -> bool:
+        return self.monitor_type in ("per_task", "per_obj")
+
     def fill_monitor_class_type(self) -> str:
-        if self.monitor_type == "per_task":
+        if self._is_id_monitor():
             return "DA_MON_EVENTS_ID"
         return "DA_MON_EVENTS_IMPLICIT"
 
     def fill_monitor_class(self) -> str:
-        if self.monitor_type == "per_task":
+        if self._is_id_monitor():
             return "da_monitor_id"
         return "da_monitor"
 
@@ -122,7 +131,7 @@ def fill_tracepoint_args_skel(self, tp_type: str) -> str:
                 }
         tp_args_id = ("int ", "id")
         tp_args = tp_args_dict[tp_type]
-        if self.monitor_type == "per_task":
+        if self._is_id_monitor():
             tp_args.insert(0, tp_args_id)
         tp_proto_c = ", ".join([a+b for a,b in tp_args])
         tp_args_c = ", ".join([b for a,b in tp_args])
@@ -169,7 +178,7 @@ def __init__(self, *args, **kwargs):
         self.__parse_constraints()
 
     def fill_monitor_class_type(self) -> str:
-        if self.monitor_type == "per_task":
+        if self._is_id_monitor():
             return "HA_MON_EVENTS_ID"
         return "HA_MON_EVENTS_IMPLICIT"
 

tools/verification/rvgen/rvgen/generator.py

@@ -243,7 +243,7 @@ def print_files(self):
 
 
 class Monitor(RVGenerator):
-    monitor_types = { "global" : 1, "per_cpu" : 2, "per_task" : 3 }
+    monitor_types = { "global" : 1, "per_cpu" : 2, "per_task" : 3, "per_obj" : 4 }
 
     def __init__(self, extra_params={}):
         super().__init__(extra_params)