diff options
Diffstat (limited to 'include/drm/gpu_scheduler.h')
| -rw-r--r-- | include/drm/gpu_scheduler.h | 428 |
1 files changed, 271 insertions, 157 deletions
diff --git a/include/drm/gpu_scheduler.h b/include/drm/gpu_scheduler.h index 9db9e5e504ee..fb88301b3c45 100644 --- a/include/drm/gpu_scheduler.h +++ b/include/drm/gpu_scheduler.h @@ -33,14 +33,23 @@ #define MAX_WAIT_SCHED_ENTITY_Q_EMPTY msecs_to_jiffies(1000) /** - * DRM_SCHED_FENCE_DONT_PIPELINE - Prefent dependency pipelining + * DRM_SCHED_FENCE_DONT_PIPELINE - Prevent dependency pipelining * * Setting this flag on a scheduler fence prevents pipelining of jobs depending * on this fence. In other words we always insert a full CPU round trip before - * dependen jobs are pushed to the hw queue. + * dependent jobs are pushed to the hw queue. */ #define DRM_SCHED_FENCE_DONT_PIPELINE DMA_FENCE_FLAG_USER_BITS +/** + * DRM_SCHED_FENCE_FLAG_HAS_DEADLINE_BIT - A fence deadline hint has been set + * + * Because we could have a deadline hint can be set before the backing hw + * fence is created, we need to keep track of whether a deadline has already + * been set. + */ +#define DRM_SCHED_FENCE_FLAG_HAS_DEADLINE_BIT (DMA_FENCE_FLAG_USER_BITS + 1) + enum dma_resv_usage; struct dma_resv; struct drm_gem_object; @@ -48,25 +57,20 @@ struct drm_gem_object; struct drm_gpu_scheduler; struct drm_sched_rq; +struct drm_file; + /* These are often used as an (initial) index * to an array, and as such should start at 0. */ enum drm_sched_priority { - DRM_SCHED_PRIORITY_MIN, - DRM_SCHED_PRIORITY_NORMAL, - DRM_SCHED_PRIORITY_HIGH, DRM_SCHED_PRIORITY_KERNEL, + DRM_SCHED_PRIORITY_HIGH, + DRM_SCHED_PRIORITY_NORMAL, + DRM_SCHED_PRIORITY_LOW, - DRM_SCHED_PRIORITY_COUNT, - DRM_SCHED_PRIORITY_UNSET = -2 + DRM_SCHED_PRIORITY_COUNT }; -/* Used to chose between FIFO and RR jobs scheduling */ -extern int drm_sched_policy; - -#define DRM_SCHED_POLICY_RR 0 -#define DRM_SCHED_POLICY_FIFO 1 - /** * struct drm_sched_entity - A wrapper around a job queue (typically * attached to the DRM file_priv). @@ -87,13 +91,21 @@ struct drm_sched_entity { struct list_head list; /** + * @lock: + * + * Lock protecting the run-queue (@rq) to which this entity belongs, + * @priority and the list of schedulers (@sched_list, @num_sched_list). + */ + spinlock_t lock; + + /** * @rq: * * Runqueue on which this entity is currently scheduled. * * FIXME: Locking is very unclear for this. Writers are protected by - * @rq_lock, but readers are generally lockless and seem to just race - * with not even a READ_ONCE. + * @lock, but readers are generally lockless and seem to just race with + * not even a READ_ONCE. */ struct drm_sched_rq *rq; @@ -126,18 +138,11 @@ struct drm_sched_entity { * @priority: * * Priority of the entity. This can be modified by calling - * drm_sched_entity_set_priority(). Protected by &rq_lock. + * drm_sched_entity_set_priority(). Protected by @lock. */ enum drm_sched_priority priority; /** - * @rq_lock: - * - * Lock to modify the runqueue to which this entity belongs. - */ - spinlock_t rq_lock; - - /** * @job_queue: the list of jobs of this entity. */ struct spsc_queue job_queue; @@ -187,10 +192,10 @@ struct drm_sched_entity { * @last_scheduled: * * Points to the finished fence of the last scheduled job. Only written - * by the scheduler thread, can be accessed locklessly from - * drm_sched_job_arm() iff the queue is empty. + * by drm_sched_entity_pop_job(). Can be accessed locklessly from + * drm_sched_job_arm() if the queue is empty. */ - struct dma_fence *last_scheduled; + struct dma_fence __rcu *last_scheduled; /** * @last_user: last group leader pushing a job into the entity. @@ -228,33 +233,28 @@ struct drm_sched_entity { */ struct rb_node rb_tree_node; - /** - * @elapsed_ns: - * - * Records the amount of time where jobs from this entity were active - * on the GPU. - */ - uint64_t elapsed_ns; }; /** * struct drm_sched_rq - queue of entities to be scheduled. * - * @lock: to modify the entities list. * @sched: the scheduler to which this rq belongs to. - * @entities: list of the entities to be scheduled. + * @lock: protects @entities, @rb_tree_root and @current_entity. * @current_entity: the entity which is to be scheduled. - * @rb_tree_root: root of time based priory queue of entities for FIFO scheduling + * @entities: list of the entities to be scheduled. + * @rb_tree_root: root of time based priority queue of entities for FIFO scheduling * * Run queue is a set of entities scheduling command submissions for * one specific ring. It implements the scheduling policy that selects * the next entity to emit commands from. */ struct drm_sched_rq { - spinlock_t lock; struct drm_gpu_scheduler *sched; - struct list_head entities; + + spinlock_t lock; + /* Following members are protected by the @lock: */ struct drm_sched_entity *current_entity; + struct list_head entities; struct rb_root_cached rb_tree_root; }; @@ -280,6 +280,12 @@ struct drm_sched_fence { */ struct dma_fence finished; + /** + * @deadline: deadline set on &drm_sched_fence.finished which + * potentially needs to be propagated to &drm_sched_fence.parent + */ + ktime_t deadline; + /** * @parent: the fence returned by &drm_sched_backend_ops.run_job * when scheduling the job on hardware. We signal the @@ -299,6 +305,13 @@ struct drm_sched_fence { * @owner: job owner for debugging */ void *owner; + + /** + * @drm_client_id: + * + * The client_id of the drm_file which owns the job. + */ + uint64_t drm_client_id; }; struct drm_sched_fence *to_drm_sched_fence(struct dma_fence *f); @@ -311,8 +324,8 @@ 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. - * @work: Helper to reschdeule job kill to different context. - * @id: a unique id assigned to each job scheduled on the scheduler. + * @credits: the number of credits this job contributes to the scheduler + * @work: Helper to reschedule job kill to different context. * @karma: increment on every hang caused by this job. If this exceeds the hang * limit of the scheduler then the job is marked guilty and will not * be scheduled further. @@ -325,25 +338,45 @@ struct drm_sched_fence *to_drm_sched_fence(struct dma_fence *f); * to schedule the job. */ struct drm_sched_job { - struct spsc_node queue_node; - struct list_head list; + /** + * @submit_ts: + * + * When the job was pushed into the entity queue. + */ + ktime_t submit_ts; + + /** + * @sched: + * + * The scheduler this job is or will be scheduled on. Gets set by + * drm_sched_job_arm(). Valid until drm_sched_backend_ops.free_job() + * has finished. + */ struct drm_gpu_scheduler *sched; + struct drm_sched_fence *s_fence; + struct drm_sched_entity *entity; + + enum drm_sched_priority s_priority; + u32 credits; + /** @last_dependency: tracks @dependencies as they signal */ + unsigned int last_dependency; + atomic_t karma; + + struct spsc_node queue_node; + struct list_head list; /* * work is used only after finish_cb has been used and will not be * accessed anymore. */ union { - struct dma_fence_cb finish_cb; - struct work_struct work; + struct dma_fence_cb finish_cb; + struct work_struct work; }; - uint64_t id; - atomic_t karma; - enum drm_sched_priority s_priority; - struct drm_sched_entity *entity; struct dma_fence_cb cb; + /** * @dependencies: * @@ -352,28 +385,22 @@ struct drm_sched_job { * drm_sched_job_add_implicit_dependencies(). */ struct xarray dependencies; - - /** @last_dependency: tracks @dependencies as they signal */ - unsigned long last_dependency; - - /** - * @submit_ts: - * - * When the job was pushed into the entity queue. - */ - ktime_t submit_ts; }; -static inline bool drm_sched_invalidate_job(struct drm_sched_job *s_job, - int threshold) -{ - return s_job && atomic_inc_return(&s_job->karma) > threshold; -} - +/** + * enum drm_gpu_sched_stat - the scheduler's status + * + * @DRM_GPU_SCHED_STAT_NONE: Reserved. Do not use. + * @DRM_GPU_SCHED_STAT_RESET: The GPU hung and successfully reset. + * @DRM_GPU_SCHED_STAT_ENODEV: Error: Device is not available anymore. + * @DRM_GPU_SCHED_STAT_NO_HANG: Contrary to scheduler's assumption, the GPU + * did not hang and is still running. + */ enum drm_gpu_sched_stat { - DRM_GPU_SCHED_STAT_NONE, /* Reserve 0 */ - DRM_GPU_SCHED_STAT_NOMINAL, + DRM_GPU_SCHED_STAT_NONE, + DRM_GPU_SCHED_STAT_RESET, DRM_GPU_SCHED_STAT_ENODEV, + DRM_GPU_SCHED_STAT_NO_HANG, }; /** @@ -397,10 +424,36 @@ struct drm_sched_backend_ops { struct drm_sched_entity *s_entity); /** - * @run_job: Called to execute the job once all of the dependencies - * have been resolved. This may be called multiple times, if - * timedout_job() has happened and drm_sched_job_recovery() - * decides to try it again. + * @run_job: Called to execute the job once all of the dependencies + * have been resolved. + * + * @sched_job: the job to run + * + * The deprecated drm_sched_resubmit_jobs() (called by &struct + * drm_sched_backend_ops.timedout_job) can invoke this again with the + * same parameters. Using this is discouraged because it violates + * dma_fence rules, notably dma_fence_init() has to be called on + * already initialized fences for a second time. Moreover, this is + * dangerous because attempts to allocate memory might deadlock with + * memory management code waiting for the reset to complete. + * + * TODO: Document what drivers should do / use instead. + * + * This method is called in a workqueue context - either from the + * submit_wq the driver passed through drm_sched_init(), or, if the + * driver passed NULL, a separate, ordered workqueue the scheduler + * allocated. + * + * Note that the scheduler expects to 'inherit' its own reference to + * this fence from the callback. It does not invoke an extra + * dma_fence_get() on it. Consequently, this callback must take a + * reference for the scheduler, and additional ones for the driver's + * respective needs. + * + * Return: + * * On success: dma_fence the driver must signal once the hardware has + * completed the job ("hardware fence"). + * * On failure: NULL or an ERR_PTR. */ struct dma_fence *(*run_job)(struct drm_sched_job *sched_job); @@ -408,43 +461,52 @@ struct drm_sched_backend_ops { * @timedout_job: Called when a job has taken too long to execute, * to trigger GPU recovery. * - * This method is called in a workqueue context. + * @sched_job: The job that has timed out + * + * Drivers typically issue a reset to recover from GPU hangs. + * This procedure looks very different depending on whether a firmware + * or a hardware scheduler is being used. + * + * For a FIRMWARE SCHEDULER, each ring has one scheduler, and each + * scheduler has one entity. Hence, the steps taken typically look as + * follows: + * + * 1. Stop the scheduler using drm_sched_stop(). This will pause the + * scheduler workqueues and cancel the timeout work, guaranteeing + * that nothing is queued while the ring is being removed. + * 2. Remove the ring. The firmware will make sure that the + * corresponding parts of the hardware are resetted, and that other + * rings are not impacted. + * 3. Kill the entity and the associated scheduler. * - * Drivers typically issue a reset to recover from GPU hangs, and this - * procedure usually follows the following workflow: * - * 1. Stop the scheduler using drm_sched_stop(). This will park the - * scheduler thread and cancel the timeout work, guaranteeing that - * nothing is queued while we reset the hardware queue - * 2. Try to gracefully stop non-faulty jobs (optional) - * 3. Issue a GPU reset (driver-specific) - * 4. Re-submit jobs using drm_sched_resubmit_jobs() - * 5. Restart the scheduler using drm_sched_start(). At that point, new - * jobs can be queued, and the scheduler thread is unblocked + * For a HARDWARE SCHEDULER, a scheduler instance schedules jobs from + * one or more entities to one ring. This implies that all entities + * associated with the affected scheduler cannot be torn down, because + * this would effectively also affect innocent userspace processes which + * did not submit faulty jobs (for example). + * + * Consequently, the procedure to recover with a hardware scheduler + * should look like this: + * + * 1. Stop all schedulers impacted by the reset using drm_sched_stop(). + * 2. Kill the entity the faulty job stems from. + * 3. Issue a GPU reset on all faulty rings (driver-specific). + * 4. Re-submit jobs on all schedulers impacted by re-submitting them to + * the entities which are still alive. + * 5. Restart all schedulers that were stopped in step #1 using + * drm_sched_start(). * * Note that some GPUs have distinct hardware queues but need to reset * the GPU globally, which requires extra synchronization between the - * timeout handler of the different &drm_gpu_scheduler. One way to - * achieve this synchronization is to create an ordered workqueue - * (using alloc_ordered_workqueue()) at the driver level, and pass this - * queue to drm_sched_init(), to guarantee that timeout handlers are - * executed sequentially. The above workflow needs to be slightly - * adjusted in that case: - * - * 1. Stop all schedulers impacted by the reset using drm_sched_stop() - * 2. Try to gracefully stop non-faulty jobs on all queues impacted by - * the reset (optional) - * 3. Issue a GPU reset on all faulty queues (driver-specific) - * 4. Re-submit jobs on all schedulers impacted by the reset using - * drm_sched_resubmit_jobs() - * 5. Restart all schedulers that were stopped in step #1 using - * drm_sched_start() + * timeout handlers of different schedulers. One way to achieve this + * synchronization is to create an ordered workqueue (using + * alloc_ordered_workqueue()) at the driver level, and pass this queue + * as drm_sched_init()'s @timeout_wq parameter. This will guarantee + * that timeout handlers are executed sequentially. * - * Return DRM_GPU_SCHED_STAT_NOMINAL, when all is normal, - * and the underlying driver has started or completed recovery. + * Return: The scheduler's status, defined by &enum drm_gpu_sched_stat * - * Return DRM_GPU_SCHED_STAT_ENODEV, if the device is no longer - * available, i.e. has been unplugged. */ enum drm_gpu_sched_stat (*timedout_job)(struct drm_sched_job *sched_job); @@ -453,27 +515,47 @@ struct drm_sched_backend_ops { * and it's time to clean it up. */ void (*free_job)(struct drm_sched_job *sched_job); + + /** + * @cancel_job: Used by the scheduler to guarantee remaining jobs' fences + * get signaled in drm_sched_fini(). + * + * Used by the scheduler to cancel all jobs that have not been executed + * with &struct drm_sched_backend_ops.run_job by the time + * drm_sched_fini() gets invoked. + * + * Drivers need to signal the passed job's hardware fence with an + * appropriate error code (e.g., -ECANCELED) in this callback. They + * must not free the job. + * + * The scheduler will only call this callback once it stopped calling + * all other callbacks forever, with the exception of &struct + * drm_sched_backend_ops.free_job. + */ + void (*cancel_job)(struct drm_sched_job *sched_job); }; /** * struct drm_gpu_scheduler - scheduler instance-specific data * * @ops: backend operations provided by the driver. - * @hw_submission_limit: the max size of the hardware queue. + * @credit_limit: the credit limit of this scheduler + * @credit_count: the current credit count of this scheduler * @timeout: the time after which a job is removed from the scheduler. * @name: name of the ring for which this scheduler is being used. - * @sched_rq: priority wise array of run queues. - * @wake_up_worker: the wait queue on which the scheduler sleeps until a job - * is ready to be scheduled. - * @job_scheduled: once @drm_sched_entity_do_release is called the scheduler + * @num_rqs: Number of run-queues. This is at most DRM_SCHED_PRIORITY_COUNT, + * as there's usually one run-queue per priority, but could be less. + * @sched_rq: An allocated array of run-queues of size @num_rqs; + * @job_scheduled: once drm_sched_entity_flush() is called the scheduler * waits on this wait queue until all the scheduled jobs are * finished. - * @hw_rq_count: the number of jobs currently in the hardware queue. * @job_id_count: used to assign unique id to the each job. + * @submit_wq: workqueue used to queue @work_run_job and @work_free_job * @timeout_wq: workqueue used to queue @work_tdr + * @work_run_job: work which calls run_job op of each scheduler. + * @work_free_job: work which calls free_job op of each scheduler. * @work_tdr: schedules a delayed call to @drm_sched_job_timedout after the * timeout interval is over. - * @thread: the kthread on which the scheduler which run. * @pending_list: the list of jobs which are currently in the job queue. * @job_list_lock: lock to protect the pending_list. * @hang_limit: once the hangs by a job crosses this limit then it is marked @@ -482,23 +564,27 @@ struct drm_sched_backend_ops { * @_score: score used when the driver doesn't provide one * @ready: marks if the underlying HW is ready to work * @free_guilty: A hit to time out handler to free the guilty job. + * @pause_submit: pause queuing of @work_run_job on @submit_wq + * @own_submit_wq: scheduler owns allocation of @submit_wq * @dev: system &struct device * * One scheduler is implemented for each hardware ring. */ struct drm_gpu_scheduler { const struct drm_sched_backend_ops *ops; - uint32_t hw_submission_limit; + u32 credit_limit; + atomic_t credit_count; long timeout; const char *name; - struct drm_sched_rq sched_rq[DRM_SCHED_PRIORITY_COUNT]; - wait_queue_head_t wake_up_worker; + u32 num_rqs; + struct drm_sched_rq **sched_rq; wait_queue_head_t job_scheduled; - atomic_t hw_rq_count; atomic64_t job_id_count; + struct workqueue_struct *submit_wq; struct workqueue_struct *timeout_wq; + struct work_struct work_run_job; + struct work_struct work_free_job; struct delayed_work work_tdr; - struct task_struct *thread; struct list_head pending_list; spinlock_t job_list_lock; int hang_limit; @@ -506,52 +592,96 @@ struct drm_gpu_scheduler { atomic_t _score; bool ready; bool free_guilty; + bool pause_submit; + bool own_submit_wq; struct device *dev; }; +/** + * struct drm_sched_init_args - parameters for initializing a DRM GPU scheduler + * + * @ops: backend operations provided by the driver + * @submit_wq: workqueue to use for submission. If NULL, an ordered wq is + * allocated and used. + * @num_rqs: Number of run-queues. This may be at most DRM_SCHED_PRIORITY_COUNT, + * as there's usually one run-queue per priority, but may be less. + * @credit_limit: the number of credits this scheduler can hold from all jobs + * @hang_limit: number of times to allow a job to hang before dropping it. + * This mechanism is DEPRECATED. Set it to 0. + * @timeout: timeout value in jiffies for submitted jobs. + * @timeout_wq: workqueue to use for timeout work. If NULL, the system_wq is used. + * @score: score atomic shared with other schedulers. May be NULL. + * @name: name (typically the driver's name). Used for debugging + * @dev: associated device. Used for debugging + */ +struct drm_sched_init_args { + const struct drm_sched_backend_ops *ops; + struct workqueue_struct *submit_wq; + struct workqueue_struct *timeout_wq; + u32 num_rqs; + u32 credit_limit; + unsigned int hang_limit; + long timeout; + atomic_t *score; + const char *name; + struct device *dev; +}; + +/* Scheduler operations */ + int drm_sched_init(struct drm_gpu_scheduler *sched, - const struct drm_sched_backend_ops *ops, - uint32_t hw_submission, unsigned hang_limit, - long timeout, struct workqueue_struct *timeout_wq, - atomic_t *score, const char *name, struct device *dev); + const struct drm_sched_init_args *args); void drm_sched_fini(struct drm_gpu_scheduler *sched); + +unsigned long drm_sched_suspend_timeout(struct drm_gpu_scheduler *sched); +void drm_sched_resume_timeout(struct drm_gpu_scheduler *sched, + unsigned long remaining); +void drm_sched_tdr_queue_imm(struct drm_gpu_scheduler *sched); +bool drm_sched_wqueue_ready(struct drm_gpu_scheduler *sched); +void drm_sched_wqueue_stop(struct drm_gpu_scheduler *sched); +void drm_sched_wqueue_start(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, int errno); +void drm_sched_resubmit_jobs(struct drm_gpu_scheduler *sched); +void drm_sched_fault(struct drm_gpu_scheduler *sched); + +struct drm_gpu_scheduler * +drm_sched_pick_best(struct drm_gpu_scheduler **sched_list, + unsigned int num_sched_list); + +/* Jobs */ + int drm_sched_job_init(struct drm_sched_job *job, struct drm_sched_entity *entity, - void *owner); + u32 credits, void *owner, + u64 drm_client_id); void drm_sched_job_arm(struct drm_sched_job *job); +void drm_sched_entity_push_job(struct drm_sched_job *sched_job); int drm_sched_job_add_dependency(struct drm_sched_job *job, struct dma_fence *fence); +int drm_sched_job_add_syncobj_dependency(struct drm_sched_job *job, + struct drm_file *file, + u32 handle, + u32 point); int drm_sched_job_add_resv_dependencies(struct drm_sched_job *job, struct dma_resv *resv, enum dma_resv_usage usage); int drm_sched_job_add_implicit_dependencies(struct drm_sched_job *job, struct drm_gem_object *obj, bool write); - - -void drm_sched_entity_modify_sched(struct drm_sched_entity *entity, - struct drm_gpu_scheduler **sched_list, - unsigned int num_sched_list); - +bool drm_sched_job_has_dependency(struct drm_sched_job *job, + struct dma_fence *fence); 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, 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); -void drm_sched_reset_karma(struct drm_sched_job *bad); -void drm_sched_increase_karma_ext(struct drm_sched_job *bad, int type); -bool drm_sched_dependency_optimized(struct dma_fence* fence, - struct drm_sched_entity *entity); -void drm_sched_fault(struct drm_gpu_scheduler *sched); -void drm_sched_rq_add_entity(struct drm_sched_rq *rq, - struct drm_sched_entity *entity); -void drm_sched_rq_remove_entity(struct drm_sched_rq *rq, - struct drm_sched_entity *entity); +static inline bool drm_sched_invalidate_job(struct drm_sched_job *s_job, + int threshold) +{ + return s_job && atomic_inc_return(&s_job->karma) > threshold; +} -void drm_sched_rq_update_fifo(struct drm_sched_entity *entity, ktime_t ts); +/* Entities */ int drm_sched_entity_init(struct drm_sched_entity *entity, enum drm_sched_priority priority, @@ -561,27 +691,11 @@ int drm_sched_entity_init(struct drm_sched_entity *entity, long drm_sched_entity_flush(struct drm_sched_entity *entity, long timeout); void drm_sched_entity_fini(struct drm_sched_entity *entity); void drm_sched_entity_destroy(struct drm_sched_entity *entity); -void drm_sched_entity_select_rq(struct drm_sched_entity *entity); -struct drm_sched_job *drm_sched_entity_pop_job(struct drm_sched_entity *entity); -void drm_sched_entity_push_job(struct drm_sched_job *sched_job); void drm_sched_entity_set_priority(struct drm_sched_entity *entity, enum drm_sched_priority priority); -bool drm_sched_entity_is_ready(struct drm_sched_entity *entity); - -struct drm_sched_fence *drm_sched_fence_alloc( - struct drm_sched_entity *s_entity, void *owner); -void drm_sched_fence_init(struct drm_sched_fence *fence, - struct drm_sched_entity *entity); -void drm_sched_fence_free(struct drm_sched_fence *fence); - -void drm_sched_fence_scheduled(struct drm_sched_fence *fence); -void drm_sched_fence_finished(struct drm_sched_fence *fence); - -unsigned long drm_sched_suspend_timeout(struct drm_gpu_scheduler *sched); -void drm_sched_resume_timeout(struct drm_gpu_scheduler *sched, - unsigned long remaining); -struct drm_gpu_scheduler * -drm_sched_pick_best(struct drm_gpu_scheduler **sched_list, - unsigned int num_sched_list); +int drm_sched_entity_error(struct drm_sched_entity *entity); +void drm_sched_entity_modify_sched(struct drm_sched_entity *entity, + struct drm_gpu_scheduler **sched_list, + unsigned int num_sched_list); #endif |