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This cancels and > frees any in-flight jobs on the scheduler. Could you put more info on why add new cancel functions rather than call existing xe_sched_submission_stop? From commit message, it looks very similar to stop, which also do stop + free action. Regards, Zhanjun Dong > > Signed-off-by: Raag Jadav > --- > v3: Cancel in-flight jobs before FLR > --- > drivers/gpu/drm/xe/xe_gpu_scheduler.c | 11 +++++++++++ > drivers/gpu/drm/xe/xe_gpu_scheduler.h | 1 + > drivers/gpu/drm/xe/xe_guc_submit.c | 24 ++++++++++++++++++++++++ > drivers/gpu/drm/xe/xe_guc_submit.h | 1 + > 4 files changed, 37 insertions(+) > > diff --git a/drivers/gpu/drm/xe/xe_gpu_scheduler.c b/drivers/gpu/drm/xe/xe_gpu_scheduler.c > index 9c8004d5dd91..c012dbe84540 100644 > --- a/drivers/gpu/drm/xe/xe_gpu_scheduler.c > +++ b/drivers/gpu/drm/xe/xe_gpu_scheduler.c > @@ -90,6 +90,17 @@ void xe_sched_fini(struct xe_gpu_scheduler *sched) > drm_sched_fini(&sched->base); > } > > +void xe_sched_submission_cancel(struct xe_gpu_scheduler *sched) > +{ > + struct drm_gpu_scheduler *base = &sched->base; > + struct drm_sched_job *job, *tmp; > + > + list_for_each_entry_safe_reverse(job, tmp, &base->pending_list, list) { > + list_del(&job->list); > + base->ops->free_job(job); > + } > +} > + > void xe_sched_submission_start(struct xe_gpu_scheduler *sched) > { > drm_sched_wqueue_start(&sched->base); > diff --git a/drivers/gpu/drm/xe/xe_gpu_scheduler.h b/drivers/gpu/drm/xe/xe_gpu_scheduler.h > index 664c2db56af3..ba7892db8428 100644 > --- a/drivers/gpu/drm/xe/xe_gpu_scheduler.h > +++ b/drivers/gpu/drm/xe/xe_gpu_scheduler.h > @@ -19,6 +19,7 @@ int xe_sched_init(struct xe_gpu_scheduler *sched, > struct device *dev); > void xe_sched_fini(struct xe_gpu_scheduler *sched); > > +void xe_sched_submission_cancel(struct xe_gpu_scheduler *sched); > void xe_sched_submission_start(struct xe_gpu_scheduler *sched); > void xe_sched_submission_stop(struct xe_gpu_scheduler *sched); > > diff --git a/drivers/gpu/drm/xe/xe_guc_submit.c b/drivers/gpu/drm/xe/xe_guc_submit.c > index de716c1fb18e..cba544cc185c 100644 > --- a/drivers/gpu/drm/xe/xe_guc_submit.c > +++ b/drivers/gpu/drm/xe/xe_guc_submit.c > @@ -2399,6 +2399,30 @@ void xe_guc_submit_stop(struct xe_guc *guc) > > } > > +/** > + * xe_guc_submit_cancel - Cancel all runs of submission tasks on given GuC. > + * @guc: the &xe_guc struct instance whose scheduler is to be cancelled > + */ > +void xe_guc_submit_cancel(struct xe_guc *guc) > +{ > + struct xe_exec_queue *q; > + unsigned long index; > + > + mutex_lock(&guc->submission_state.lock); > + > + xa_for_each(&guc->submission_state.exec_queue_lookup, index, q) { > + struct xe_gpu_scheduler *sched = &q->guc->sched; > + > + /* Prevent redundant attempts to cancel parallel queues */ > + if (q->guc->id != index) > + continue; > + > + xe_sched_submission_cancel(sched); > + } > + > + mutex_unlock(&guc->submission_state.lock); > +} > + > static void guc_exec_queue_revert_pending_state_change(struct xe_guc *guc, > struct xe_exec_queue *q) > { > diff --git a/drivers/gpu/drm/xe/xe_guc_submit.h b/drivers/gpu/drm/xe/xe_guc_submit.h > index b3839a90c142..f361a6d32fd3 100644 > --- a/drivers/gpu/drm/xe/xe_guc_submit.h > +++ b/drivers/gpu/drm/xe/xe_guc_submit.h > @@ -16,6 +16,7 @@ int xe_guc_submit_init(struct xe_guc *guc, unsigned int num_ids); > int xe_guc_submit_enable(struct xe_guc *guc); > void xe_guc_submit_disable(struct xe_guc *guc); > > +void xe_guc_submit_cancel(struct xe_guc *guc); > int xe_guc_submit_reset_prepare(struct xe_guc *guc); > void xe_guc_submit_reset_wait(struct xe_guc *guc); > void xe_guc_submit_stop(struct xe_guc *guc);