From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 15F793DD53F for ; Wed, 1 Apr 2026 15:18:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775056726; cv=none; b=pIcChsYSUnEJ++K8P0u06nDxi0RQQAqg2+SrUmGws6P9lCmemzXDaA76N+RVkl9liDYfXmsT5mdG0we0pP6wnFZLNsIr+RKogAQKcOTH7jIUbECMicALL7NOOj2knbOCQ6g6lw4wkVg8uPFx7/wx7OKQCqiVm4Hilnks6Q+iKvg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775056726; c=relaxed/simple; bh=qdzNUsc2mzNj+tmmdUWb6BZLFbARIIuu3a5aRVvnVRI=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=BRVK27Ezra+H0VXoz4z0ErN3f4Gn9qq9gFfXJYf3wo49lrbSH9PbqUF89sC+sXMhLf63Wj+nX8inA+QfUxAB+0V0xMGFS1SPLkVTmlzRjHR5qm1wAuXxxY/RlOiJsYclVi3qJ6WpD8ybJ+8X1WyEgoinNHOeE2ifbULRmShs3GE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=DfTsgGRe; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="DfTsgGRe" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1775056724; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=RpIVCy5XbUzKVJ04cpOfML8td2pHIcuCju22u7XEhO4=; b=DfTsgGReH/ITewT4Gan+ar2/JVJgMYknB+yRRcZJggfUbQt35hQzW5qnMlfEYZuT0pbSY8 fjp2U3eTvVeEmyn9ndtn8pGHFsrveAzIPHuXBl/BIYxkyKXTnYypEQFUl3P46FJQkh9BYf GNuH5MaQA2kpZIzpgJ34yPDS8sTE2os= Received: from mx-prod-mc-06.mail-002.prod.us-west-2.aws.redhat.com (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-599-FejmGBLSNMub7xXsgHvyhw-1; Wed, 01 Apr 2026 11:18:40 -0400 X-MC-Unique: FejmGBLSNMub7xXsgHvyhw-1 X-Mimecast-MFC-AGG-ID: FejmGBLSNMub7xXsgHvyhw_1775056719 Received: from mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 0F626187BE17; Wed, 1 Apr 2026 15:18:22 +0000 (UTC) Received: from gmonaco-thinkpadt14gen3.rmtit.csb (unknown [10.44.33.81]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 4EF6F3001D2A; Wed, 1 Apr 2026 15:18:16 +0000 (UTC) From: Gabriele Monaco To: linux-kernel@vger.kernel.org, Steven Rostedt Cc: Gabriele Monaco , Nam Cao , Wander Lairson Costa Subject: [GIT PULL] rv changes for v7.1 (for-next) Date: Wed, 1 Apr 2026 17:17:07 +0200 Message-ID: <20260401151706.415601-2-gmonaco@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 Steve, The following changes since commit 7aaa8047eafd0bd628065b15757d9b48c5f9c07d: Linux 7.0-rc6 (2026-03-29 15:40:00 -0700) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/gmonaco/linux.git rv-7.1-next for you to fetch changes up to 00f0dadde8c5036fe6462621a6920549036dce70: rv: Allow epoll in rtapp-sleep monitor (2026-04-01 15:18:30 +0200) ---------------------------------------------------------------- rv changes for v7.1 (for-next) Summary of changes: - Refactor da_monitor header to share handlers across monitor types No functional changes, only less code duplication. - Add Hybrid Automata model class Add a new model class that extends deterministic automata by adding constraints on transitions and states. Those constraints can take into account wall-clock time and as such allow RV monitor to make assertions on real time. Add documentation and code generation scripts. - Add stall monitor as hybrid automaton example Add a monitor that triggers a violation when a task is stalling as an example of automaton working with real time variables. - Convert the opid monitor to a hybrid automaton The opid monitor can be heavily simplified if written as a hybrid automaton: instead of tracking preempt and interrupt enable/disable events, it can just run constraints on the preemption/interrupt states when events like wakeup and need_resched verify. - Add support for per-object monitors in DA/HA Allow writing deterministic and hybrid automata monitors for generic objects (e.g. any struct), by exploiting a hash table where objects are saved. This allows to track more than just tasks in RV. For instance it will be used to track deadline entities in deadline monitors. - Add deadline tracepoints and move some deadline utilities Prepare the ground for deadline monitors by defining events and exporting helpers. - Add nomiss deadline monitor Add first example of deadline monitor asserting all entities complete before their deadline. - Improve rvgen error handling Introduce AutomataError exception class and better handle expected exceptions while showing a backtrace for unexpected ones. - Improve python code quality in rvgen Refactor the rvgen generation scripts to align with python best practices: use f-strings instead of %, use len() instead of __len__(), remove semicolons, use context managers for file operations, fix whitespace violations, extract magic strings into constants, remove unused imports and methods. - Fix small bugs in rvgen The generator scripts presented some corner case bugs: logical error in validating what a correct dot file looks like, fix an isinstance() check, enforce a dot file has an initial state, fix type annotations and typos in comments. - rvgen refactoring Refactor automata.py to use iterator-based parsing and handle required arguments directly in argparse. - Allow epoll in rtapp-sleep monitor The epoll_wait call is now rt-friendly so it should be allowed in the sleep monitor as a valid sleep method. ---------------------------------------------------------------- Gabriele Monaco (12): rv: Unify DA event handling functions across monitor types rv: Add Hybrid Automata monitor type verification/rvgen: Allow spaces in and events strings verification/rvgen: Add support for Hybrid Automata Documentation/rv: Add documentation about hybrid automata rv: Add sample hybrid monitor stall rv: Convert the opid monitor to a hybrid automaton rv: Add support for per-object monitors in DA/HA verification/rvgen: Add support for per-obj monitors sched: Add deadline tracepoints sched/deadline: Move some utility functions to deadline.h rv: Add nomiss deadline monitor Nam Cao (1): rv: Allow epoll in rtapp-sleep monitor Wander Lairson Costa (19): rv/rvgen: introduce AutomataError exception class rv/rvgen: remove bare except clauses in generator rv/rvgen: replace % string formatting with f-strings rv/rvgen: replace __len__() calls with len() rv/rvgen: remove unnecessary semicolons rv/rvgen: use context managers for file operations rv/rvgen: fix typos in automata and generator docstring and comments rv/rvgen: fix PEP 8 whitespace violations rv/rvgen: fix DOT file validation logic error rv/rvgen: use class constant for init marker rv/rvgen: refactor automata.py to use iterator-based parsing rv/rvgen: remove unused sys import from dot2c rv/rvgen: remove unused __get_main_name method rv/rvgen: make monitor arguments required in rvgen rv/rvgen: fix isinstance check in Variable.expand() rv/rvgen: extract node marker string to class constant rv/rvgen: enforce presence of initial state rv/rvgen: fix unbound loop variable warning rv/rvgen: fix _fill_states() return type annotation Documentation/tools/rv/index.rst | 1 + Documentation/tools/rv/rv-mon-stall.rst | 44 ++ Documentation/trace/rv/deterministic_automata.rst | 2 +- Documentation/trace/rv/hybrid_automata.rst | 341 +++++++++++ Documentation/trace/rv/index.rst | 3 + Documentation/trace/rv/monitor_deadline.rst | 84 +++ Documentation/trace/rv/monitor_sched.rst | 62 +- Documentation/trace/rv/monitor_stall.rst | 43 ++ Documentation/trace/rv/monitor_synthesis.rst | 117 +++- include/linux/rv.h | 39 ++ include/linux/sched/deadline.h | 27 + include/rv/da_monitor.h | 644 +++++++++++++++------ include/rv/ha_monitor.h | 478 +++++++++++++++ include/trace/events/sched.h | 26 + kernel/sched/core.c | 5 + kernel/sched/deadline.c | 51 +- kernel/trace/rv/Kconfig | 18 + kernel/trace/rv/Makefile | 3 + kernel/trace/rv/monitors/deadline/Kconfig | 10 + kernel/trace/rv/monitors/deadline/deadline.c | 44 ++ kernel/trace/rv/monitors/deadline/deadline.h | 202 +++++++ kernel/trace/rv/monitors/nomiss/Kconfig | 15 + kernel/trace/rv/monitors/nomiss/nomiss.c | 293 ++++++++++ kernel/trace/rv/monitors/nomiss/nomiss.h | 123 ++++ kernel/trace/rv/monitors/nomiss/nomiss_trace.h | 19 + kernel/trace/rv/monitors/opid/Kconfig | 11 +- kernel/trace/rv/monitors/opid/opid.c | 111 ++-- kernel/trace/rv/monitors/opid/opid.h | 86 +-- kernel/trace/rv/monitors/opid/opid_trace.h | 4 + kernel/trace/rv/monitors/sleep/sleep.c | 8 + kernel/trace/rv/monitors/sleep/sleep.h | 98 ++-- kernel/trace/rv/monitors/stall/Kconfig | 13 + kernel/trace/rv/monitors/stall/stall.c | 150 +++++ kernel/trace/rv/monitors/stall/stall.h | 81 +++ kernel/trace/rv/monitors/stall/stall_trace.h | 19 + kernel/trace/rv/rv_trace.h | 67 ++- tools/verification/models/deadline/nomiss.dot | 41 ++ tools/verification/models/rtapp/sleep.ltl | 1 + tools/verification/models/sched/opid.dot | 36 +- tools/verification/models/stall.dot | 22 + tools/verification/rvgen/__main__.py | 27 +- tools/verification/rvgen/dot2c | 1 - tools/verification/rvgen/rvgen/automata.py | 294 +++++++--- tools/verification/rvgen/rvgen/dot2c.py | 105 +++- tools/verification/rvgen/rvgen/dot2k.py | 524 ++++++++++++++++- tools/verification/rvgen/rvgen/generator.py | 93 ++- tools/verification/rvgen/rvgen/ltl2ba.py | 11 +- tools/verification/rvgen/rvgen/ltl2k.py | 54 +- .../rvgen/rvgen/templates/dot2k/main.c | 2 +- .../rvgen/rvgen/templates/dot2k/trace_hybrid.h | 16 + 50 files changed, 3883 insertions(+), 686 deletions(-) create mode 100644 Documentation/tools/rv/rv-mon-stall.rst create mode 100644 Documentation/trace/rv/hybrid_automata.rst create mode 100644 Documentation/trace/rv/monitor_deadline.rst create mode 100644 Documentation/trace/rv/monitor_stall.rst create mode 100644 include/rv/ha_monitor.h create mode 100644 kernel/trace/rv/monitors/deadline/Kconfig create mode 100644 kernel/trace/rv/monitors/deadline/deadline.c create mode 100644 kernel/trace/rv/monitors/deadline/deadline.h create mode 100644 kernel/trace/rv/monitors/nomiss/Kconfig create mode 100644 kernel/trace/rv/monitors/nomiss/nomiss.c create mode 100644 kernel/trace/rv/monitors/nomiss/nomiss.h create mode 100644 kernel/trace/rv/monitors/nomiss/nomiss_trace.h create mode 100644 kernel/trace/rv/monitors/stall/Kconfig create mode 100644 kernel/trace/rv/monitors/stall/stall.c create mode 100644 kernel/trace/rv/monitors/stall/stall.h create mode 100644 kernel/trace/rv/monitors/stall/stall_trace.h create mode 100644 tools/verification/models/deadline/nomiss.dot create mode 100644 tools/verification/models/stall.dot create mode 100644 tools/verification/rvgen/rvgen/templates/dot2k/trace_hybrid.h To: Steven Rostedt Cc: Gabriele Monaco Cc: Nam Cao Cc: Wander Lairson Costa