Re: [PATCH v6 11/16] drm/sched: Make timeout timer rearm conditional.

[Christian König <ckoenig.leichtzumerken@xxxxxxxxx>]

Am 10.05.21 um 18:36 schrieb Andrey Grodzovsky:
> We don't want to rearm the timer if driver hook reports
> that the device is gone.
>
> v5: Update drm_gpu_sched_stat values in code.
>
> Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@xxxxxxx>

Reviewed-by: Christian König <christian.koenig@xxxxxxx>

> ---
>   drivers/gpu/drm/scheduler/sched_main.c | 11 +++++++----
>   1 file changed, 7 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/scheduler/sched_main.c b/drivers/gpu/drm/scheduler/sched_main.c
> index f4f474944169..8d1211e87101 100644
> --- a/drivers/gpu/drm/scheduler/sched_main.c
> +++ b/drivers/gpu/drm/scheduler/sched_main.c
> @@ -314,6 +314,7 @@ static void drm_sched_job_timedout(struct work_struct *work)
>   {
>   	struct drm_gpu_scheduler *sched;
>   	struct drm_sched_job *job;
> +	enum drm_gpu_sched_stat status = DRM_GPU_SCHED_STAT_NOMINAL;
>   
>   	sched = container_of(work, struct drm_gpu_scheduler, work_tdr.work);
>   
> @@ -331,7 +332,7 @@ static void drm_sched_job_timedout(struct work_struct *work)
>   		list_del_init(&job->list);
>   		spin_unlock(&sched->job_list_lock);
>   
> -		job->sched->ops->timedout_job(job);
> +		status = job->sched->ops->timedout_job(job);
>   
>   		/*
>   		 * Guilty job did complete and hence needs to be manually removed
> @@ -345,9 +346,11 @@ static void drm_sched_job_timedout(struct work_struct *work)
>   		spin_unlock(&sched->job_list_lock);
>   	}
>   
> -	spin_lock(&sched->job_list_lock);
> -	drm_sched_start_timeout(sched);
> -	spin_unlock(&sched->job_list_lock);
> +	if (status != DRM_GPU_SCHED_STAT_ENODEV) {
> +		spin_lock(&sched->job_list_lock);
> +		drm_sched_start_timeout(sched);
> +		spin_unlock(&sched->job_list_lock);
> +	}
>   }
>   
>    /**