Re: [RFC PATCH v5 6/6] rust: drm: Add JobQueue

Re: [RFC PATCH v5 6/6] rust: drm: Add JobQueue

[kernel test robot]

Hi Philipp,

[This is a private test report for your RFC patch.]
kernel test robot noticed the following build errors:

[auto build test ERROR on next-20261008]
[cannot apply to rust/rust-next drm/drm-next v7.3-rc6 v7.3-rc5 v7.3-rc4 linus/master v7.3-rc7]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Philipp-Stanner/rust-DmaFence-remove-static-lifetime/20261009-211119
base:   next-20261008
patch link:    https://lore.kernel.org/r/20261009191124.1022902-8-phasta%40kernel.org
patch subject: [RFC PATCH v5 6/6] rust: drm: Add JobQueue
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20261015/202610151526.B43xvcc0-lkp@intel.com/config)
compiler: clang version 22.1.8 (https://github.com/llvm/llvm-project ca7933e47d3a3451d81e72ac174dcb5aa28b59d1)
rustc: rustc 1.96.0 (ac68faa20 2026-05-25)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261015/202610151526.B43xvcc0-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202610151526.B43xvcc0-lkp@intel.com/

All errors (new ones prefixed by >>):

>> error[E0432]: unresolved imports `kernel::workqueue::new_scoped_work`, `kernel::workqueue::ScopedWork`, `kernel::workqueue::ScopedWorkItem`, `kernel::workqueue::ScopedWorkRef`
   --> rust/kernel/drm/job_queue.rs:60:9
   |
   60 |         new_scoped_work,
   |         ^^^^^^^^^^^^^^^ no `new_scoped_work` in `workqueue`
   61 | //        ScopedQueue,
   62 |         ScopedWork,
   |         ^^^^^^^^^^ no `ScopedWork` in `workqueue`
   63 |         ScopedWorkItem,
   |         ^^^^^^^^^^^^^^ no `ScopedWorkItem` in `workqueue`
   64 |         ScopedWorkRef,
   |         ^^^^^^^^^^^^^ no `ScopedWorkRef` in `workqueue`
   |
   help: a similar name exists in the module
   |
   60 -         new_scoped_work,
   60 +         new_delayed_work,
   |
--
>> error[E0425]: cannot find function `system_dfl` in module `workqueue`
   --> rust/kernel/drm/job_queue.rs:257:29
   |
   257 |         unsafe { workqueue::system_dfl().enqueue_scoped(&*self.submit_worker) };
   |                             ^^^^^^^^^^
   |
   ::: rust/kernel/workqueue.rs:1102:1
   |
   1102 | pub fn system_bh() -> &'static Queue {
   | ------------------------------------ similarly named function `system_bh` defined here
   |
   help: a function with a similar name exists
   |
   257 -         unsafe { workqueue::system_dfl().enqueue_scoped(&*self.submit_worker) };
   257 +         unsafe { workqueue::system_bh().enqueue_scoped(&*self.submit_worker) };
   |
--
>> error[E0277]: `impl PinInit<Revocable<Lock<impl PinInit<..., ...>, ...>>>` cannot be used to initialize `Revocable<lock::Lock<JobQueueInner<'_, T>, SpinLockIrqBackend>>` with error `_`
   --> rust/kernel/drm/job_queue.rs:416:22
   |
   416 |               inner <- Revocable::new(new_spinlock_irq!(try_pin_init!(JobQueueInner {
   |  ___________________--_^
   | |                   |
   | |                   required by a bound introduced by this call
   417 | |                 submit_worker_active: false,
   418 | |                 // SAFETY: `this` is valid. The lifetimes ensure that the reference remains valid.
   419 | |                 submit_worker <- new_scoped_work!("JobQueueSubmitWorker", Ok(SubmitWorker { jq: unsafe { &*this.as_ptr() } })),
   ...    |
   422 | |                 capacity,
   423 | |             }))),
   | |________________^ unsatisfied trait bound
   |
   = help: the trait `pin_init::PinInit<Revocable<lock::Lock<JobQueueInner<'_, T>, SpinLockIrqBackend>>, _>` is not implemented for `impl PinInit<Revocable<Lock<impl PinInit<..., ...>, ...>>>`
   help: the following other types implement trait `pin_init::PinInit<T, E>`
   --> rust/pin-init/src/lib.rs:1063:1
   |
   1063 | / unsafe impl<T: ?Sized, E, I, F> PinInit<T, E> for ChainPinInit<I, F, T, E>
   1064 | | where
   1065 | |     I: PinInit<T, E>,
   1066 | |     F: FnOnce(Pin<&mut T>) -> Result<(), E>,
   | |____________________________________________^ `ChainPinInit<I, F, T, E>`
   ...
   1162 | / unsafe impl<T: ?Sized, E, I, F> PinInit<T, E> for ChainInit<I, F, T, E>
   1163 | | where
   1164 | |     I: Init<T, E>,
   1165 | |     F: FnOnce(&mut T) -> Result<(), E>,
   | |_______________________________________^ `ChainInit<I, F, T, E>`
   ...
   1502 |   unsafe impl<T, E> PinInit<T, E> for Result<T, E> {
   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `core::result::Result<T, E>`
   note: required by a bound in `pin_init::__internal::Slot::<pin_init::__internal::Pinned, T>::init`
   --> rust/pin-init/src/__internal.rs:266:37
   |
   266 |     pub fn init<E>(self, init: impl PinInit<T, E>) -> Result<DropGuard<Pinned, T>, E> {
   |                                     ^^^^^^^^^^^^^ required by this bound in `Slot::<Pinned, T>::init`
   = note: the full name for the type has been written to 'kernel.long-type-12147038180072536476.txt'
   = note: consider using `--verbose` to print the full type name to the console

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