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2026-03-31rv: Add support for per-object monitors in DA/HAGabriele Monaco
RV deterministic and hybrid automata currently only support global, per-cpu and per-task monitors. It isn't possible to write a model that would follow some different type of object, like a deadline entity or a lock. Define the generic per-object monitor implementation which shares part of the implementation with the per-task monitors. The user needs to provide an id for the object (e.g. pid for tasks) and define the data type for the monitor_target (e.g. struct task_struct * for tasks). Both are supplied to the event handlers, as the id may not be easily available in the target. The monitor storage (e.g. the rv monitor, pointer to the target, etc.) is stored in a hash table indexed by id. Monitor storage objects are automatically allocated unless specified otherwise (e.g. if the creation context is unsafe for allocation). Reviewed-by: Nam Cao <namcao@linutronix.de> Link: https://lore.kernel.org/r/20260330111010.153663-9-gmonaco@redhat.com Signed-off-by: Gabriele Monaco <gmonaco@redhat.com>
2026-03-31rv: Add Hybrid Automata monitor typeGabriele Monaco
Deterministic automata define which events are allowed in every state, but cannot define more sophisticated constraint taking into account the system's environment (e.g. time or other states not producing events). Add the Hybrid Automata monitor type as an extension of Deterministic automata where each state transition is validating a constraint on a finite number of environment variables. Hybrid automata can be used to implement timed automata, where the environment variables are clocks. Also implement the necessary functionality to handle clock constraints (ns or jiffy granularity) on state and events. Reviewed-by: Nam Cao <namcao@linutronix.de> Link: https://lore.kernel.org/r/20260330111010.153663-3-gmonaco@redhat.com Signed-off-by: Gabriele Monaco <gmonaco@redhat.com>