From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from relay.hostedemail.com (smtprelay0015.hostedemail.com [216.40.44.15]) (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 66EF63DBD6B for ; Tue, 14 Apr 2026 11:32:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=216.40.44.15 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776166341; cv=none; b=Njy0J9LWd6QShDMFwZjR4CxvYww3Mr54gNFGDyBFhKZS8R/R5AeyROp9Sk2ne8CMI8LsPw/gxYMbzdcXxJ92jqAWb6lqZFhDqChnwNucg0F4p3i0wEXRhkU5QWfaeZb9xQPVnosc5P+eQM6USGBeiNML6iBVlPpN1BSv/LHhfts= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776166341; c=relaxed/simple; bh=EXHSRaUdT4NWVA8hwmSQ/uZ4++VQPiiKE4fvcyhvb9g=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type; b=Y9ANkexhKEo/q9cveskJtHyIfGN9UPmGdv7ANsALaIfY/u/9c5l0WdOZKoJ2VOIt5VOAr80ZEMm+i8jgItG9PxEs+CmWkCvO7tM2UGiswBXGOV/2hoPAFReQN9dwYwdU21vj0IPXfI8tF5AcrH863y8ZvdvUhoOtYeA094ZAddU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=goodmis.org; spf=pass smtp.mailfrom=goodmis.org; arc=none smtp.client-ip=216.40.44.15 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=goodmis.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=goodmis.org Received: from omf10.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay07.hostedemail.com (Postfix) with ESMTP id 293AD160590; Tue, 14 Apr 2026 11:32:18 +0000 (UTC) Received: from [HIDDEN] (Authenticated sender: rostedt@goodmis.org) by omf10.hostedemail.com (Postfix) with ESMTPA id D337B42; Tue, 14 Apr 2026 11:32:15 +0000 (UTC) Date: Tue, 14 Apr 2026 07:32:12 -0400 From: Steven Rostedt To: Linus Torvalds Cc: LKML , Gabriele Monaco , Nam Cao , Wander Lairson Costa , Thomas =?UTF-8?B?V2Vpw59zY2h1aA==?= Subject: [GIT PULL] rv: Updates for v7.1 Message-ID: <20260414073212.1b7174dd@robin> X-Mailer: Claws Mail 4.3.1 (GTK 3.24.51; x86_64-redhat-linux-gnu) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspamout07 X-Rspamd-Queue-Id: D337B42 X-Stat-Signature: w6nb9cbrn1e5qs7spy5nrorhymn5kzic X-Session-Marker: 726F737465647440676F6F646D69732E6F7267 X-Session-ID: U2FsdGVkX19ApK9yCCTdoe4F0or9zFHAUBrWWRNuBJc= X-HE-Tag: 1776166335-341756 X-HE-Meta: U2FsdGVkX19lvUVkpNE9n9l51DGuRH6IlJrcG6vpQlUCf0oB92wXObEBH54vdvcPEPW2HGUWSRw+CHTm3pn1fs831oJpQIk4Hkbk7B5yKSUF3lh752jVu/xKK3jHKbYT+dNOMFZzh8D9AhlBRgySZETFH1Y5ZCldYDTBawtBD4KTcVLFi6OgbQDNY/IH+kfPlERAyVj+Fw1OM9J5kNYOPJ1YeuzIvXwpYJgVWJxDDfA5VZdAd5cmhyLR75KG+xOY/o9lgMX3ksMvfkgtkg49uW7whfp7fEKj0eFNkLqaNPgVHS5+qSZ82V/ldCdf4jhQtuLvtWWpwTeCtA2tLzzno5tihs/ICO73 Linus, Runtime Verification updates for 7.1: - 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. Please pull the latest trace-rv-v7.1 tree, which can be found at: git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git trace-rv-v7.1 Tag SHA1: a6d8b3e4af26a6d177bbd9cab0e2e0228441209c Head SHA1: 00f0dadde8c5036fe6462621a6920549036dce70 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 ---------------------------