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drm/amdgpu: fix unnecessary wake up
decrease CPU extra overhead. Signed-off-by: Chunming Zhou <david1.zhou@amd.com> Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com> Reviewed-by: Christian K?nig <christian.koenig@amd.com>
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parent
6d1d0ef743
commit
1c8f805af9
2 changed files with 7 additions and 4 deletions
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@ -158,7 +158,7 @@ select_context(struct amd_gpu_scheduler *sched)
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if (sched->current_entity && (sched->current_entity != tmp))
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wake_entity = sched->current_entity;
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sched->current_entity = tmp;
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if (wake_entity)
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if (wake_entity && wake_entity->need_wakeup)
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wake_up(&wake_entity->wait_queue);
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return tmp;
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}
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@ -195,6 +195,7 @@ int amd_sched_entity_init(struct amd_gpu_scheduler *sched,
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entity->fence_context = fence_context_alloc(1);
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snprintf(name, sizeof(name), "c_entity[%llu]", entity->fence_context);
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memcpy(entity->name, name, 20);
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entity->need_wakeup = false;
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if(kfifo_alloc(&entity->job_queue,
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jobs * sizeof(void *),
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GFP_KERNEL))
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@ -257,7 +258,7 @@ int amd_sched_entity_fini(struct amd_gpu_scheduler *sched,
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if (!is_context_entity_initialized(sched, entity))
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return 0;
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entity->need_wakeup = true;
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/**
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* The client will not queue more IBs during this fini, consume existing
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* queued IBs
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@ -323,8 +324,9 @@ int amd_sched_push_job(struct amd_gpu_scheduler *sched,
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*/
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schedule();
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}
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wake_up_interruptible(&sched->wait_queue);
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/* first job wake up scheduler */
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if ((kfifo_len(&c_entity->job_queue) / sizeof(void *)) == 1)
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wake_up_interruptible(&sched->wait_queue);
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return 0;
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}
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@ -54,6 +54,7 @@ struct amd_sched_entity {
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bool is_pending;
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uint64_t fence_context;
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char name[20];
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bool need_wakeup;
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};
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/**
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