[PATCH v4 3/5] drm/scheduler: rework job destruction

Grodzovsky, Andrey Andrey.Grodzovsky at amd.com
Wed Apr 17 18:29:33 UTC 2019


On 4/17/19 2:01 PM, Koenig, Christian wrote:
> Am 17.04.19 um 19:59 schrieb Christian König:
>> Am 17.04.19 um 19:53 schrieb Grodzovsky, Andrey:
>>> On 4/17/19 1:17 PM, Christian König wrote:
>>>> I can't review this patch, since I'm one of the authors of it, but in
>>>> general your changes look good to me now.
>>>>
>>>> For patch #5 I think it might be cleaner if we move incrementing of
>>>> the hw_rq_count while starting the scheduler again.
>>> But the increment of  hw_rq_count is conditional on if the guilty job
>>> was signaled, moving it into drm_sched_start will also force me to pass
>>> 'job_signaled' flag into drm_sched_start which is against your original
>>> comment that we don't want to pass this logic around helper functions
>>> and keep it all in one place which is amdgpu_device_gpu_recover.
>> Well I hope that incrementing hw_rq_count is conditional for signaled
>> jobs anyway, or otherwise we would seriously mess up the counter.
>>
>> E.g. in drm_sched_stop() we also only decrement it when we where able
>> to remove the callback.
> Ok, checking the code again we don't need any special handling here
> since all signaled jobs are already removed from the mirror_list.
>
> Christian.

We decrement in drm_sched_stop and then later if the guilty job is found 
to be signaled we are skipping drm_sched_resubmit_jobs and so will not 
increment back and then the count becomes 'negative' when the fence 
signals and i got a bug. But now i think what i need is to just move the 
atomic_inc(&sched->hw_rq_count) from drm_sched_resubmit_jobs into 
drm_sched_start and so this way i can get rid of the conditional 
re-incriment i am doing now. Agree ?

Andrey

>
>> Christian.
>>
>>> Andrey
>>>
>>>
>>>> Regards,
>>>> Christian.
>>>>
>>>> Am 17.04.19 um 16:36 schrieb Grodzovsky, Andrey:
>>>>> Ping on this patch and patch 5. The rest already RBed.
>>>>>
>>>>> Andrey
>>>>>
>>>>> On 4/16/19 2:23 PM, Andrey Grodzovsky wrote:
>>>>>> From: Christian König <christian.koenig at amd.com>
>>>>>>
>>>>>> We now destroy finished jobs from the worker thread to make sure that
>>>>>> we never destroy a job currently in timeout processing.
>>>>>> By this we avoid holding lock around ring mirror list in
>>>>>> drm_sched_stop
>>>>>> which should solve a deadlock reported by a user.
>>>>>>
>>>>>> v2: Remove unused variable.
>>>>>> v4: Move guilty job free into sched code.
>>>>>>
>>>>>> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=109692
>>>>>>
>>>>>> Signed-off-by: Christian König <christian.koenig at amd.com>
>>>>>> Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky at amd.com>
>>>>>> ---
>>>>>>      drivers/gpu/drm/amd/amdgpu/amdgpu_device.c |   9 +-
>>>>>>      drivers/gpu/drm/etnaviv/etnaviv_dump.c     |   4 -
>>>>>>      drivers/gpu/drm/etnaviv/etnaviv_sched.c    |   2 +-
>>>>>>      drivers/gpu/drm/lima/lima_sched.c          |   2 +-
>>>>>>      drivers/gpu/drm/panfrost/panfrost_job.c    |   2 +-
>>>>>>      drivers/gpu/drm/scheduler/sched_main.c     | 145
>>>>>> +++++++++++++++++------------
>>>>>>      drivers/gpu/drm/v3d/v3d_sched.c            |   2 +-
>>>>>>      include/drm/gpu_scheduler.h                |   6 +-
>>>>>>      8 files changed, 94 insertions(+), 78 deletions(-)
>>>>>>
>>>>>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
>>>>>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
>>>>>> index 7cee269..a0e165c 100644
>>>>>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
>>>>>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
>>>>>> @@ -3334,7 +3334,7 @@ static int amdgpu_device_pre_asic_reset(struct
>>>>>> amdgpu_device *adev,
>>>>>>              if (!ring || !ring->sched.thread)
>>>>>>                  continue;
>>>>>>      -        drm_sched_stop(&ring->sched);
>>>>>> +        drm_sched_stop(&ring->sched, &job->base);
>>>>>>                 /* after all hw jobs are reset, hw fence is
>>>>>> meaningless, so force_completion */
>>>>>>              amdgpu_fence_driver_force_completion(ring);
>>>>>> @@ -3343,8 +3343,6 @@ static int amdgpu_device_pre_asic_reset(struct
>>>>>> amdgpu_device *adev,
>>>>>>          if(job)
>>>>>>              drm_sched_increase_karma(&job->base);
>>>>>>      -
>>>>>> -
>>>>>>          if (!amdgpu_sriov_vf(adev)) {
>>>>>>                 if (!need_full_reset)
>>>>>> @@ -3482,8 +3480,7 @@ static int amdgpu_do_asic_reset(struct
>>>>>> amdgpu_hive_info *hive,
>>>>>>          return r;
>>>>>>      }
>>>>>>      -static void amdgpu_device_post_asic_reset(struct amdgpu_device
>>>>>> *adev,
>>>>>> -                      struct amdgpu_job *job)
>>>>>> +static void amdgpu_device_post_asic_reset(struct amdgpu_device
>>>>>> *adev)
>>>>>>      {
>>>>>>          int i;
>>>>>>      @@ -3623,7 +3620,7 @@ int amdgpu_device_gpu_recover(struct
>>>>>> amdgpu_device *adev,
>>>>>>             /* Post ASIC reset for all devs .*/
>>>>>>          list_for_each_entry(tmp_adev, device_list_handle,
>>>>>> gmc.xgmi.head) {
>>>>>> -        amdgpu_device_post_asic_reset(tmp_adev, tmp_adev == adev ?
>>>>>> job : NULL);
>>>>>> +        amdgpu_device_post_asic_reset(tmp_adev);
>>>>>>                 if (r) {
>>>>>>                  /* bad news, how to tell it to userspace ? */
>>>>>> diff --git a/drivers/gpu/drm/etnaviv/etnaviv_dump.c
>>>>>> b/drivers/gpu/drm/etnaviv/etnaviv_dump.c
>>>>>> index 33854c9..5778d9c 100644
>>>>>> --- a/drivers/gpu/drm/etnaviv/etnaviv_dump.c
>>>>>> +++ b/drivers/gpu/drm/etnaviv/etnaviv_dump.c
>>>>>> @@ -135,13 +135,11 @@ void etnaviv_core_dump(struct etnaviv_gpu *gpu)
>>>>>>                  mmu_size + gpu->buffer.size;
>>>>>>             /* Add in the active command buffers */
>>>>>> -    spin_lock_irqsave(&gpu->sched.job_list_lock, flags);
>>>>>>          list_for_each_entry(s_job, &gpu->sched.ring_mirror_list,
>>>>>> node) {
>>>>>>              submit = to_etnaviv_submit(s_job);
>>>>>>              file_size += submit->cmdbuf.size;
>>>>>>              n_obj++;
>>>>>>          }
>>>>>> - spin_unlock_irqrestore(&gpu->sched.job_list_lock, flags);
>>>>>>             /* Add in the active buffer objects */
>>>>>>          list_for_each_entry(vram, &gpu->mmu->mappings, mmu_node) {
>>>>>> @@ -183,14 +181,12 @@ void etnaviv_core_dump(struct etnaviv_gpu *gpu)
>>>>>>                        gpu->buffer.size,
>>>>>> etnaviv_cmdbuf_get_va(&gpu->buffer));
>>>>>>      - spin_lock_irqsave(&gpu->sched.job_list_lock, flags);
>>>>>>          list_for_each_entry(s_job, &gpu->sched.ring_mirror_list,
>>>>>> node) {
>>>>>>              submit = to_etnaviv_submit(s_job);
>>>>>>              etnaviv_core_dump_mem(&iter, ETDUMP_BUF_CMD,
>>>>>>                            submit->cmdbuf.vaddr, submit->cmdbuf.size,
>>>>>> etnaviv_cmdbuf_get_va(&submit->cmdbuf));
>>>>>>          }
>>>>>> - spin_unlock_irqrestore(&gpu->sched.job_list_lock, flags);
>>>>>>             /* Reserve space for the bomap */
>>>>>>          if (n_bomap_pages) {
>>>>>> diff --git a/drivers/gpu/drm/etnaviv/etnaviv_sched.c
>>>>>> b/drivers/gpu/drm/etnaviv/etnaviv_sched.c
>>>>>> index 6d24fea..a813c82 100644
>>>>>> --- a/drivers/gpu/drm/etnaviv/etnaviv_sched.c
>>>>>> +++ b/drivers/gpu/drm/etnaviv/etnaviv_sched.c
>>>>>> @@ -109,7 +109,7 @@ static void etnaviv_sched_timedout_job(struct
>>>>>> drm_sched_job *sched_job)
>>>>>>          }
>>>>>>             /* block scheduler */
>>>>>> -    drm_sched_stop(&gpu->sched);
>>>>>> +    drm_sched_stop(&gpu->sched, sched_job);
>>>>>>             if(sched_job)
>>>>>>              drm_sched_increase_karma(sched_job);
>>>>>> diff --git a/drivers/gpu/drm/lima/lima_sched.c
>>>>>> b/drivers/gpu/drm/lima/lima_sched.c
>>>>>> index 97bd9c1..df98931 100644
>>>>>> --- a/drivers/gpu/drm/lima/lima_sched.c
>>>>>> +++ b/drivers/gpu/drm/lima/lima_sched.c
>>>>>> @@ -300,7 +300,7 @@ static struct dma_fence
>>>>>> *lima_sched_run_job(struct drm_sched_job *job)
>>>>>>      static void lima_sched_handle_error_task(struct lima_sched_pipe
>>>>>> *pipe,
>>>>>>                           struct lima_sched_task *task)
>>>>>>      {
>>>>>> -    drm_sched_stop(&pipe->base);
>>>>>> +    drm_sched_stop(&pipe->base, &task->base);
>>>>>>             if (task)
>>>>>>              drm_sched_increase_karma(&task->base);
>>>>>> diff --git a/drivers/gpu/drm/panfrost/panfrost_job.c
>>>>>> b/drivers/gpu/drm/panfrost/panfrost_job.c
>>>>>> index 0a7ed04..c6336b7 100644
>>>>>> --- a/drivers/gpu/drm/panfrost/panfrost_job.c
>>>>>> +++ b/drivers/gpu/drm/panfrost/panfrost_job.c
>>>>>> @@ -385,7 +385,7 @@ static void panfrost_job_timedout(struct
>>>>>> drm_sched_job *sched_job)
>>>>>>              sched_job);
>>>>>>             for (i = 0; i < NUM_JOB_SLOTS; i++)
>>>>>> - drm_sched_stop(&pfdev->js->queue[i].sched);
>>>>>> + drm_sched_stop(&pfdev->js->queue[i].sched, sched_job);
>>>>>>             if (sched_job)
>>>>>>              drm_sched_increase_karma(sched_job);
>>>>>> diff --git a/drivers/gpu/drm/scheduler/sched_main.c
>>>>>> b/drivers/gpu/drm/scheduler/sched_main.c
>>>>>> index 19fc601..21e8734 100644
>>>>>> --- a/drivers/gpu/drm/scheduler/sched_main.c
>>>>>> +++ b/drivers/gpu/drm/scheduler/sched_main.c
>>>>>> @@ -265,32 +265,6 @@ void drm_sched_resume_timeout(struct
>>>>>> drm_gpu_scheduler *sched,
>>>>>>      }
>>>>>>      EXPORT_SYMBOL(drm_sched_resume_timeout);
>>>>>>      -/* job_finish is called after hw fence signaled
>>>>>> - */
>>>>>> -static void drm_sched_job_finish(struct work_struct *work)
>>>>>> -{
>>>>>> -    struct drm_sched_job *s_job = container_of(work, struct
>>>>>> drm_sched_job,
>>>>>> -                           finish_work);
>>>>>> -    struct drm_gpu_scheduler *sched = s_job->sched;
>>>>>> -    unsigned long flags;
>>>>>> -
>>>>>> -    /*
>>>>>> -     * Canceling the timeout without removing our job from the ring
>>>>>> mirror
>>>>>> -     * list is safe, as we will only end up in this worker if our
>>>>>> jobs
>>>>>> -     * finished fence has been signaled. So even if some another
>>>>>> worker
>>>>>> -     * manages to find this job as the next job in the list, the
>>>>>> fence
>>>>>> -     * signaled check below will prevent the timeout to be
>>>>>> restarted.
>>>>>> -     */
>>>>>> -    cancel_delayed_work_sync(&sched->work_tdr);
>>>>>> -
>>>>>> -    spin_lock_irqsave(&sched->job_list_lock, flags);
>>>>>> -    /* queue TDR for next job */
>>>>>> -    drm_sched_start_timeout(sched);
>>>>>> -    spin_unlock_irqrestore(&sched->job_list_lock, flags);
>>>>>> -
>>>>>> -    sched->ops->free_job(s_job);
>>>>>> -}
>>>>>> -
>>>>>>      static void drm_sched_job_begin(struct drm_sched_job *s_job)
>>>>>>      {
>>>>>>          struct drm_gpu_scheduler *sched = s_job->sched;
>>>>>> @@ -315,6 +289,13 @@ static void drm_sched_job_timedout(struct
>>>>>> work_struct *work)
>>>>>>          if (job)
>>>>>>              job->sched->ops->timedout_job(job);
>>>>>>      +    /*
>>>>>> +     * Guilty job did complete and hence needs to be manually
>>>>>> removed
>>>>>> +     * See drm_sched_stop doc.
>>>>>> +     */
>>>>>> +    if (list_empty(&job->node))
>>>>>> +        job->sched->ops->free_job(job);
>>>>>> +
>>>>>>          spin_lock_irqsave(&sched->job_list_lock, flags);
>>>>>>          drm_sched_start_timeout(sched);
>>>>>> spin_unlock_irqrestore(&sched->job_list_lock, flags);
>>>>>> @@ -371,23 +352,26 @@ EXPORT_SYMBOL(drm_sched_increase_karma);
>>>>>>       * @sched: scheduler instance
>>>>>>       * @bad: bad scheduler job
>>>>>>       *
>>>>>> + * Stop the scheduler and also removes and frees all completed jobs.
>>>>>> + * Note: bad job will not be freed as it might be used later and so
>>>>>> it's
>>>>>> + * callers responsibility to release it manually if it's not part
>>>>>> of the
>>>>>> + * mirror list any more.
>>>>>> + *
>>>>>>       */
>>>>>> -void drm_sched_stop(struct drm_gpu_scheduler *sched)
>>>>>> +void drm_sched_stop(struct drm_gpu_scheduler *sched, struct
>>>>>> drm_sched_job *bad)
>>>>>>      {
>>>>>> -    struct drm_sched_job *s_job;
>>>>>> +    struct drm_sched_job *s_job, *tmp;
>>>>>>          unsigned long flags;
>>>>>> -    struct dma_fence *last_fence =  NULL;
>>>>>>             kthread_park(sched->thread);
>>>>>>             /*
>>>>>> -     * Verify all the signaled jobs in mirror list are removed from
>>>>>> the ring
>>>>>> -     * by waiting for the latest job to enter the list. This should
>>>>>> insure that
>>>>>> -     * also all the previous jobs that were in flight also already
>>>>>> singaled
>>>>>> -     * and removed from the list.
>>>>>> +     * Iterate the job list from later to  earlier one and either
>>>>>> deactive
>>>>>> +     * their HW callbacks or remove them from mirror list if they
>>>>>> already
>>>>>> +     * signaled.
>>>>>> +     * This iteration is thread safe as sched thread is stopped.
>>>>>>           */
>>>>>> -    spin_lock_irqsave(&sched->job_list_lock, flags);
>>>>>> -    list_for_each_entry_reverse(s_job, &sched->ring_mirror_list,
>>>>>> node) {
>>>>>> +    list_for_each_entry_safe_reverse(s_job, tmp,
>>>>>> &sched->ring_mirror_list, node) {
>>>>>>              if (s_job->s_fence->parent &&
>>>>>> dma_fence_remove_callback(s_job->s_fence->parent,
>>>>>>                                &s_job->cb)) {
>>>>>> @@ -395,16 +379,30 @@ void drm_sched_stop(struct drm_gpu_scheduler
>>>>>> *sched)
>>>>>>                  s_job->s_fence->parent = NULL;
>>>>>>                  atomic_dec(&sched->hw_rq_count);
>>>>>>              } else {
>>>>>> -             last_fence = dma_fence_get(&s_job->s_fence->finished);
>>>>>> -             break;
>>>>>> +            /*
>>>>>> +             * remove job from ring_mirror_list.
>>>>>> +             * Locking here is for concurrent resume timeout
>>>>>> +             */
>>>>>> + spin_lock_irqsave(&sched->job_list_lock, flags);
>>>>>> +            list_del_init(&s_job->node);
>>>>>> + spin_unlock_irqrestore(&sched->job_list_lock, flags);
>>>>>> +
>>>>>> +            /*
>>>>>> +             * Wait for job's HW fence callback to finish using
>>>>>> s_job
>>>>>> +             * before releasing it.
>>>>>> +             *
>>>>>> +             * Job is still alive so fence refcount at least 1
>>>>>> +             */
>>>>>> + dma_fence_wait(&s_job->s_fence->finished, false);
>>>>>> +
>>>>>> +            /*
>>>>>> +             * We must keep bad job alive for later use during
>>>>>> +             * recovery by some of the drivers
>>>>>> +             */
>>>>>> +            if (bad != s_job)
>>>>>> +                sched->ops->free_job(s_job);
>>>>>>              }
>>>>>>          }
>>>>>> -    spin_unlock_irqrestore(&sched->job_list_lock, flags);
>>>>>> -
>>>>>> -    if (last_fence) {
>>>>>> -        dma_fence_wait(last_fence, false);
>>>>>> -        dma_fence_put(last_fence);
>>>>>> -    }
>>>>>>      }
>>>>>>         EXPORT_SYMBOL(drm_sched_stop);
>>>>>> @@ -418,6 +416,7 @@ EXPORT_SYMBOL(drm_sched_stop);
>>>>>>      void drm_sched_start(struct drm_gpu_scheduler *sched, bool
>>>>>> full_recovery)
>>>>>>      {
>>>>>>          struct drm_sched_job *s_job, *tmp;
>>>>>> +    unsigned long flags;
>>>>>>          int r;
>>>>>>             if (!full_recovery)
>>>>>> @@ -425,9 +424,7 @@ void drm_sched_start(struct drm_gpu_scheduler
>>>>>> *sched, bool full_recovery)
>>>>>>             /*
>>>>>>           * Locking the list is not required here as the sched thread
>>>>>> is parked
>>>>>> -     * so no new jobs are being pushed in to HW and in
>>>>>> drm_sched_stop we
>>>>>> -     * flushed all the jobs who were still in mirror list but who
>>>>>> already
>>>>>> -     * signaled and removed them self from the list. Also concurrent
>>>>>> +     * so no new jobs are being inserted or removed. Also concurrent
>>>>>>           * GPU recovers can't run in parallel.
>>>>>>           */
>>>>>>          list_for_each_entry_safe(s_job, tmp,
>>>>>> &sched->ring_mirror_list, node) {
>>>>>> @@ -445,7 +442,9 @@ void drm_sched_start(struct drm_gpu_scheduler
>>>>>> *sched, bool full_recovery)
>>>>>>                  drm_sched_process_job(NULL, &s_job->cb);
>>>>>>          }
>>>>>>      +    spin_lock_irqsave(&sched->job_list_lock, flags);
>>>>>>          drm_sched_start_timeout(sched);
>>>>>> +    spin_unlock_irqrestore(&sched->job_list_lock, flags);
>>>>>>         unpark:
>>>>>>          kthread_unpark(sched->thread);
>>>>>> @@ -464,7 +463,6 @@ void drm_sched_resubmit_jobs(struct
>>>>>> drm_gpu_scheduler *sched)
>>>>>>          uint64_t guilty_context;
>>>>>>          bool found_guilty = false;
>>>>>>      -    /*TODO DO we need spinlock here ? */
>>>>>>          list_for_each_entry_safe(s_job, tmp,
>>>>>> &sched->ring_mirror_list, node) {
>>>>>>              struct drm_sched_fence *s_fence = s_job->s_fence;
>>>>>>      @@ -514,7 +512,6 @@ int drm_sched_job_init(struct drm_sched_job
>>>>>> *job,
>>>>>>              return -ENOMEM;
>>>>>>          job->id = atomic64_inc_return(&sched->job_id_count);
>>>>>>      -    INIT_WORK(&job->finish_work, drm_sched_job_finish);
>>>>>>          INIT_LIST_HEAD(&job->node);
>>>>>>             return 0;
>>>>>> @@ -597,24 +594,53 @@ static void drm_sched_process_job(struct
>>>>>> dma_fence *f, struct dma_fence_cb *cb)
>>>>>>          struct drm_sched_job *s_job = container_of(cb, struct
>>>>>> drm_sched_job, cb);
>>>>>>          struct drm_sched_fence *s_fence = s_job->s_fence;
>>>>>>          struct drm_gpu_scheduler *sched = s_fence->sched;
>>>>>> -    unsigned long flags;
>>>>>> -
>>>>>> -    cancel_delayed_work(&sched->work_tdr);
>>>>>>             atomic_dec(&sched->hw_rq_count);
>>>>>>          atomic_dec(&sched->num_jobs);
>>>>>>      -    spin_lock_irqsave(&sched->job_list_lock, flags);
>>>>>> -    /* remove job from ring_mirror_list */
>>>>>> -    list_del_init(&s_job->node);
>>>>>> -    spin_unlock_irqrestore(&sched->job_list_lock, flags);
>>>>>> +    trace_drm_sched_process_job(s_fence);
>>>>>>             drm_sched_fence_finished(s_fence);
>>>>>> -
>>>>>> -    trace_drm_sched_process_job(s_fence);
>>>>>> wake_up_interruptible(&sched->wake_up_worker);
>>>>>> +}
>>>>>> +
>>>>>> +/**
>>>>>> + * drm_sched_cleanup_jobs - destroy finished jobs
>>>>>> + *
>>>>>> + * @sched: scheduler instance
>>>>>> + *
>>>>>> + * Remove all finished jobs from the mirror list and destroy them.
>>>>>> + */
>>>>>> +static void drm_sched_cleanup_jobs(struct drm_gpu_scheduler *sched)
>>>>>> +{
>>>>>> +    unsigned long flags;
>>>>>> +
>>>>>> +    /* Don't destroy jobs while the timeout worker is running */
>>>>>> +    if (!cancel_delayed_work(&sched->work_tdr))
>>>>>> +        return;
>>>>>> +
>>>>>> +
>>>>>> +    while (!list_empty(&sched->ring_mirror_list)) {
>>>>>> +        struct drm_sched_job *job;
>>>>>> +
>>>>>> +        job = list_first_entry(&sched->ring_mirror_list,
>>>>>> +                       struct drm_sched_job, node);
>>>>>> +        if (!dma_fence_is_signaled(&job->s_fence->finished))
>>>>>> +            break;
>>>>>> +
>>>>>> +        spin_lock_irqsave(&sched->job_list_lock, flags);
>>>>>> +        /* remove job from ring_mirror_list */
>>>>>> +        list_del_init(&job->node);
>>>>>> + spin_unlock_irqrestore(&sched->job_list_lock, flags);
>>>>>> +
>>>>>> +        sched->ops->free_job(job);
>>>>>> +    }
>>>>>> +
>>>>>> +    /* queue timeout for next job */
>>>>>> +    spin_lock_irqsave(&sched->job_list_lock, flags);
>>>>>> +    drm_sched_start_timeout(sched);
>>>>>> +    spin_unlock_irqrestore(&sched->job_list_lock, flags);
>>>>>>      -    schedule_work(&s_job->finish_work);
>>>>>>      }
>>>>>>         /**
>>>>>> @@ -656,9 +682,10 @@ static int drm_sched_main(void *param)
>>>>>>              struct dma_fence *fence;
>>>>>> wait_event_interruptible(sched->wake_up_worker,
>>>>>> +                     (drm_sched_cleanup_jobs(sched),
>>>>>>                           (!drm_sched_blocked(sched) &&
>>>>>>                            (entity =
>>>>>> drm_sched_select_entity(sched))) ||
>>>>>> -                     kthread_should_stop());
>>>>>> +                     kthread_should_stop()));
>>>>>>                 if (!entity)
>>>>>>                  continue;
>>>>>> diff --git a/drivers/gpu/drm/v3d/v3d_sched.c
>>>>>> b/drivers/gpu/drm/v3d/v3d_sched.c
>>>>>> index e740f3b..1a4abe7 100644
>>>>>> --- a/drivers/gpu/drm/v3d/v3d_sched.c
>>>>>> +++ b/drivers/gpu/drm/v3d/v3d_sched.c
>>>>>> @@ -232,7 +232,7 @@ v3d_gpu_reset_for_timeout(struct v3d_dev *v3d,
>>>>>> struct drm_sched_job *sched_job)
>>>>>>             /* block scheduler */
>>>>>>          for (q = 0; q < V3D_MAX_QUEUES; q++)
>>>>>> -        drm_sched_stop(&v3d->queue[q].sched);
>>>>>> +        drm_sched_stop(&v3d->queue[q].sched, sched_job);
>>>>>>             if (sched_job)
>>>>>>              drm_sched_increase_karma(sched_job);
>>>>>> diff --git a/include/drm/gpu_scheduler.h
>>>>>> b/include/drm/gpu_scheduler.h
>>>>>> index 0daca4d..9ee0f27 100644
>>>>>> --- a/include/drm/gpu_scheduler.h
>>>>>> +++ b/include/drm/gpu_scheduler.h
>>>>>> @@ -167,9 +167,6 @@ struct drm_sched_fence
>>>>>> *to_drm_sched_fence(struct dma_fence *f);
>>>>>>       * @sched: the scheduler instance on which this job is scheduled.
>>>>>>       * @s_fence: contains the fences for the scheduling of job.
>>>>>>       * @finish_cb: the callback for the finished fence.
>>>>>> - * @finish_work: schedules the function @drm_sched_job_finish once
>>>>>> the job has
>>>>>> - *               finished to remove the job from the
>>>>>> - *               @drm_gpu_scheduler.ring_mirror_list.
>>>>>>       * @node: used to append this struct to the
>>>>>> @drm_gpu_scheduler.ring_mirror_list.
>>>>>>       * @id: a unique id assigned to each job scheduled on the
>>>>>> scheduler.
>>>>>>       * @karma: increment on every hang caused by this job. If this
>>>>>> exceeds the hang
>>>>>> @@ -188,7 +185,6 @@ struct drm_sched_job {
>>>>>>          struct drm_gpu_scheduler    *sched;
>>>>>>          struct drm_sched_fence        *s_fence;
>>>>>>          struct dma_fence_cb        finish_cb;
>>>>>> -    struct work_struct        finish_work;
>>>>>>          struct list_head        node;
>>>>>>          uint64_t            id;
>>>>>>          atomic_t            karma;
>>>>>> @@ -296,7 +292,7 @@ int drm_sched_job_init(struct drm_sched_job *job,
>>>>>>                     void *owner);
>>>>>>      void drm_sched_job_cleanup(struct drm_sched_job *job);
>>>>>>      void drm_sched_wakeup(struct drm_gpu_scheduler *sched);
>>>>>> -void drm_sched_stop(struct drm_gpu_scheduler *sched);
>>>>>> +void drm_sched_stop(struct drm_gpu_scheduler *sched, struct
>>>>>> drm_sched_job *bad);
>>>>>>      void drm_sched_start(struct drm_gpu_scheduler *sched, bool
>>>>>> full_recovery);
>>>>>>      void drm_sched_resubmit_jobs(struct drm_gpu_scheduler *sched);
>>>>>>      void drm_sched_increase_karma(struct drm_sched_job *bad);
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