Merge drm/drm-fixes into drm-misc-fixes

Getting fixes and updates from v7.1-rc1.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

Merge tag 'trace-rv-v7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull runtime verification updates from Steven Rostedt:

- Refactor da_monitor header to share handlers a

Merge tag 'trace-rv-v7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull runtime verification updates from Steven Rostedt:

- 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.

* tag 'trace-rv-v7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (32 commits)
rv: Allow epoll in rtapp-sleep monitor
rv/rvgen: fix _fill_states() return type annotation
rv/rvgen: fix unbound loop variable warning
rv/rvgen: enforce presence of initial state
rv/rvgen: extract node marker string to class constant
rv/rvgen: fix isinstance check in Variable.expand()
rv/rvgen: make monitor arguments required in rvgen
rv/rvgen: remove unused __get_main_name method
rv/rvgen: remove unused sys import from dot2c
rv/rvgen: refactor automata.py to use iterator-based parsing
rv/rvgen: use class constant for init marker
rv/rvgen: fix DOT file validation logic error
rv/rvgen: fix PEP 8 whitespace violations
rv/rvgen: fix typos in automata and generator docstring and comments
rv/rvgen: use context managers for file operations
rv/rvgen: remove unnecessary semicolons
rv/rvgen: replace __len__() calls with len()
rv/rvgen: replace % string formatting with f-strings
rv/rvgen: remove bare except clauses in generator
rv/rvgen: introduce AutomataError exception class
...

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rv/rvgen: remove unused sys import from dot2c

The sys module was imported in the dot2c frontend script but never
used. This import was likely left over from earlier development or
copied from a temp

rv/rvgen: remove unused sys import from dot2c

The sys module was imported in the dot2c frontend script but never
used. This import was likely left over from earlier development or
copied from a template that required sys for exit handling.

Remove the unused import to clean up the code and satisfy linters
that flag unused imports as errors.

Signed-off-by: Wander Lairson Costa <wander@redhat.com>
Reviewed-by: Gabriele Monaco <gmonaco@redhat.com>
Link: https://lore.kernel.org/r/20260223162407.147003-13-wander@redhat.com
Signed-off-by: Gabriele Monaco <gmonaco@redhat.com>

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Merge remote-tracking branch 'drm/drm-next' into msm-next-robclark

Back-merge drm-next to get caught up.

Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com>

Merge drm/drm-next into drm-intel-gt-next

Backmerge in order to get the commit:

048832a3f400 ("drm/i915: Refactor shmem_pwrite() to use kiocb and write_iter")

To drm-intel-gt-next as there are f

Merge drm/drm-next into drm-intel-gt-next

Backmerge in order to get the commit:

048832a3f400 ("drm/i915: Refactor shmem_pwrite() to use kiocb and write_iter")

To drm-intel-gt-next as there are followup fixes to be applied.

Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

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Merge commit 'linus' into core/bugs, to resolve conflicts

Resolve conflicts with this commit that was developed in parallel
during the merge window:

8c8efa93db68 ("x86/bug: Add ARCH_WARN_ASM macro

Merge commit 'linus' into core/bugs, to resolve conflicts

Resolve conflicts with this commit that was developed in parallel
during the merge window:

8c8efa93db68 ("x86/bug: Add ARCH_WARN_ASM macro for BUG/WARN asm code sharing with Rust")

Conflicts:
arch/riscv/include/asm/bug.h
arch/x86/include/asm/bug.h

Signed-off-by: Ingo Molnar <mingo@kernel.org>

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Merge branch 'next' into for-linus

Prepare input updates for 6.18 merge window.

Merge tag 'v6.17-rc2' into HEAD

Sync up with mainline to bring in changes to include/linux/sprintf.h

Merge drm/drm-next into drm-misc-next-fixes

Backmerging to drm-misc-next-fixes to get features and fixes from
v6.17-rc6.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

Merge drm/drm-next into drm-intel-next

Catching up with some display dependencies.

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

Merge drm/drm-next into drm-xe-next

Bring v6.17-rc1 to propagate commits from other subsystems, particularly
PCI, which has some new functions needed for SR-IOV integration.

Signed-off-by: Lucas De

Merge drm/drm-next into drm-xe-next

Bring v6.17-rc1 to propagate commits from other subsystems, particularly
PCI, which has some new functions needed for SR-IOV integration.

Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>

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Merge drm/drm-next into drm-misc-n

Updating drm-misc-next to the state of v6.17-rc1. Begins a new release
cycle.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

Merge drm/drm-fixes into drm-misc-fixes

Updating drm-misc-fixes to the state of v6.17-rc1. Begins a new release
cycle.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

Merge tag 'trace-rv-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull runtime verification updates from Steven Rostedt:

- Added Linear temporal logic monitors for RT ap

Merge tag 'trace-rv-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull runtime verification updates from Steven Rostedt:

- Added Linear temporal logic monitors for RT application

Real-time applications may have design flaws causing them to have
unexpected latency. For example, the applications may raise page
faults, or may be blocked trying to take a mutex without priority
inheritance.

However, while attempting to implement DA monitors for these
real-time rules, deterministic automaton is found to be inappropriate
as the specification language. The automaton is complicated, hard to
understand, and error-prone.

For these cases, linear temporal logic is found to be more suitable.
The LTL is more concise and intuitive.

- Make printk_deferred() public

The new monitors needed access to printk_deferred(). Make them
visible for the entire kernel.

- Add a vpanic() to allow for va_list to be passed to panic.

- Add rtapp container monitor.

A collection of monitors that check for common problems with
real-time applications that cause unexpected latency.

- Add page fault tracepoints to risc-v

These tracepoints are necessary to for the RV monitor to run on
risc-v.

- Fix the behaviour of the rv tool with -s and idle tasks.

- Allow the rv tool to gracefully terminate with SIGTERM

- Adjusts dot2c not to create lines over 100 columns

- Properly order nested monitors in the RV Kconfig file

- Return the registration error in all DA monitor instead of 0

- Update and add new sched collection monitors

Replace tss and sncid monitors with more complete sts:

Not only prove that switches occur in scheduling context and scheduling
needs interrupt disabled but also that each call to the scheduler
disables interrupts to (optionally) switch.

New monitor: nrp
Preemption requires need resched which is cleared by any switch
(includes a non optimal workaround for /nested/ preemptions)

New monitor: sssw
suspension requires setting the task to sleepable and, after the
switch occurs, the task requires a wakeup to come back to runnable

New monitor: opid
waking and need-resched operations occur with interrupts and
preemption disabled or in IRQ without explicitly disabling
preemption"

* tag 'trace-rv-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (48 commits)
rv: Add opid per-cpu monitor
rv: Add nrp and sssw per-task monitors
rv: Replace tss and sncid monitors with more complete sts
sched: Adapt sched tracepoints for RV task model
rv: Retry when da monitor detects race conditions
rv: Adjust monitor dependencies
rv: Use strings in da monitors tracepoints
rv: Remove trailing whitespace from tracepoint string
rv: Add da_handle_start_run_event_ to per-task monitors
rv: Fix wrong type cast in reactors_show() and monitor_reactor_show()
rv: Fix wrong type cast in monitors_show()
rv: Remove struct rv_monitor::reacting
rv: Remove rv_reactor's reference counter
rv: Merge struct rv_reactor_def into struct rv_reactor
rv: Merge struct rv_monitor_def into struct rv_monitor
rv: Remove unused field in struct rv_monitor_def
rv: Return init error when registering monitors
verification/rvgen: Organise Kconfig entries for nested monitors
tools/dot2c: Fix generated files going over 100 column limit
tools/rv: Stop gracefully also on SIGTERM
...

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verification/dot2k: Prepare the frontend for LTL inclusion

The dot2k tool has some code that can be reused for linear temporal logic
monitor. Prepare its frontend for LTL inclusion:

1. Rename to

verification/dot2k: Prepare the frontend for LTL inclusion

The dot2k tool has some code that can be reused for linear temporal logic
monitor. Prepare its frontend for LTL inclusion:

1. Rename to be generic: rvgen

2. Replace the parameter --dot with 2 parameters:
--class: to specific the monitor class, can be 'da' or 'ltl'
--spec: the monitor specification file, .dot file for DA, and .ltl
file for LTL

The old command:

python3 dot2/dot2k monitor -d wip.dot -t per_cpu

is equivalent to the new commands:

python3 rvgen monitor -c da -s wip.dot -t per_cpu

Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://lore.kernel.org/dea18f7a44374e4db8df5c7e785604bc3062ffc9.1751634289.git.namcao@linutronix.de
Reviewed-by: Gabriele Monaco <gmonaco@redhat.com>
Signed-off-by: Nam Cao <namcao@linutronix.de>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>

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