This series contains several related changes, the main areas are:
* hybrid automata
Hybrid automata are 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.
* per-object monitors
Define the generic per-object monitor allow RV monitors on any kind
of object where the user can specify how to get an id (e.g. pid for
tasks) and the data type for the monitor_target (e.g. struct
task_struct * for tasks).
The monitor storage (e.g. the rv monitor, pointer to the target, etc.)
is stored in a hash table indexed by id.
* deadline monitors collection
Add the nomiss monitor to validate timing aspects of the deadline
scheduler, as it works for tasks and servers, it's inclusion
requires also per-object monitors (for dl entities).
Note: this submission removed all patches depending on enqueue/dequeue
tracepoints. The current series is ready for inclusion while the other
patches will be submitted separately.
The entire series can also be found on:
git.kernel.org/pub/scm/linux/kernel/git/gmonaco/linux.git rv_hybrid_automata
Changes since V7:
* Fix wrong title in monitor_deadline docs
* Warn if kallsyms lookup fails
* Minor improvement in hybrid automata docs
* Use u8 instead of uint8_t in deadline tracepoints and models
* Drop enqueue/dequeue tracepoints and dependent patches from the
series, will submit separately
[1] - https://lore.kernel.org/lkml/20260310105627.332044-1-gmonaco@redhat.com
To: Steven Rostedt <rostedt@goodmis.org>
To: Nam Cao <namcao@linutronix.de>
To: Juri Lelli <jlelli@redhat.com>
Cc: Tomas Glozar <tglozar@redhat.com>
Cc: Clark Williams <williams@redhat.com>
Cc: John Kacur <jkacur@redhat.com>
Cc: linux-trace-kernel@vger.kernel.org
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
Documentation/tools/rv/index.rst | 1 +
Documentation/tools/rv/rv-mon-stall.rst | 44 ++
.../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 ++++
.../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/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/sched/opid.dot | 36 +-
tools/verification/models/stall.dot | 22 +
tools/verification/rvgen/__main__.py | 8 +-
tools/verification/rvgen/rvgen/automata.py | 151 +++-
tools/verification/rvgen/rvgen/dot2c.py | 47 ++
tools/verification/rvgen/rvgen/dot2k.py | 489 ++++++++++++-
tools/verification/rvgen/rvgen/generator.py | 4 +-
.../rvgen/rvgen/templates/dot2k/main.c | 2 +-
.../rvgen/templates/dot2k/trace_hybrid.h | 16 +
44 files changed, 3605 insertions(+), 447 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
base-commit: 7aaa8047eafd0bd628065b15757d9b48c5f9c07d
--
2.53.0