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drm/amdgpu: cleanup and fix scheduler fence handling v2 

v2: rebased

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com> (v1)
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
This commit is contained in:
Christian König 2015-08-05 21:22:10 +02:00 committed by Alex Deucher
parent 91404fb208
commit 6f0e54a964
3 changed files with 44 additions and 50 deletions
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26
drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c
View File

@ -43,16 +43,9 @@ static int amdgpu_sched_prepare_job(struct amd_gpu_scheduler *sched,
return r;
}
static void amdgpu_fence_sched_cb(struct fence *f, struct fence_cb *cb)
{
struct amd_sched_job *sched_job =
container_of(cb, struct amd_sched_job, cb);
amd_sched_process_job(sched_job);
}
static void amdgpu_sched_run_job(struct amd_gpu_scheduler *sched,
struct amd_sched_entity *entity,
struct amd_sched_job *job)
static struct fence *amdgpu_sched_run_job(struct amd_gpu_scheduler *sched,
struct amd_sched_entity *entity,
struct amd_sched_job *job)
{
int r = 0;
struct amdgpu_cs_parser *sched_job;
@ -60,7 +53,7 @@ static void amdgpu_sched_run_job(struct amd_gpu_scheduler *sched,
if (!job || !job->job) {
DRM_ERROR("job is null\n");
return;
return NULL;
}
sched_job = (struct amdgpu_cs_parser *)job->job;
mutex_lock(&sched_job->job_lock);
@ -70,12 +63,7 @@ static void amdgpu_sched_run_job(struct amd_gpu_scheduler *sched,
sched_job->filp);
if (r)
goto err;
fence = sched_job->ibs[sched_job->num_ibs - 1].fence;
if (fence_add_callback(&fence->base,
&job->cb, amdgpu_fence_sched_cb)) {
DRM_ERROR("fence add callback failed\n");
goto err;
}
fence = amdgpu_fence_ref(sched_job->ibs[sched_job->num_ibs - 1].fence);
if (sched_job->run_job) {
r = sched_job->run_job(sched_job);
@ -86,11 +74,13 @@ static void amdgpu_sched_run_job(struct amd_gpu_scheduler *sched,
amd_sched_emit(entity, sched_job->ibs[sched_job->num_ibs - 1].sequence);
mutex_unlock(&sched_job->job_lock);
return;
return &fence->base;
err:
DRM_ERROR("Run job error\n");
mutex_unlock(&sched_job->job_lock);
schedule_work(&sched_job->job_work);
return NULL;
}
static void amdgpu_sched_process_job(struct amd_gpu_scheduler *sched, void *job)

61
drivers/gpu/drm/amd/scheduler/gpu_scheduler.c
View File

@ -175,9 +175,9 @@ exit:
* return 0 if succeed. negative error code on failure
*/
int amd_sched_entity_init(struct amd_gpu_scheduler *sched,
struct amd_sched_entity *entity,
struct amd_run_queue *rq,
uint32_t jobs)
struct amd_sched_entity *entity,
struct amd_run_queue *rq,
uint32_t jobs)
{
uint64_t seq_ring = 0;
@ -353,6 +353,24 @@ int amd_sched_wait_emit(struct amd_sched_entity *c_entity,
return 0;
}
static void amd_sched_process_job(struct fence *f, struct fence_cb *cb)
{
struct amd_sched_job *sched_job =
container_of(cb, struct amd_sched_job, cb);
struct amd_gpu_scheduler *sched;
unsigned long flags;
sched = sched_job->sched;
spin_lock_irqsave(&sched->queue_lock, flags);
list_del(&sched_job->list);
atomic64_dec(&sched->hw_rq_count);
spin_unlock_irqrestore(&sched->queue_lock, flags);
sched->ops->process_job(sched, sched_job->job);
kfree(sched_job);
wake_up_interruptible(&sched->wait_queue);
}
static int amd_sched_main(void *param)
{
int r;
@ -365,6 +383,8 @@ static int amd_sched_main(void *param)
while (!kthread_should_stop()) {
struct amd_sched_job *sched_job = NULL;
struct fence *fence;
wait_event_interruptible(sched->wait_queue,
is_scheduler_ready(sched) &&
(c_entity = select_context(sched)));
@ -388,36 +408,21 @@ static int amd_sched_main(void *param)
spin_unlock_irqrestore(&sched->queue_lock, flags);
}
mutex_lock(&sched->sched_lock);
sched->ops->run_job(sched, c_entity, sched_job);
fence = sched->ops->run_job(sched, c_entity, sched_job);
if (fence) {
r = fence_add_callback(fence, &sched_job->cb,
amd_sched_process_job);
if (r == -ENOENT)
amd_sched_process_job(fence, &sched_job->cb);
else if (r)
DRM_ERROR("fence add callback failed (%d)\n", r);
fence_put(fence);
}
mutex_unlock(&sched->sched_lock);
}
return 0;
}
/**
* ISR to handle EOP inetrrupts
*
* @sched: gpu scheduler
*
*/
void amd_sched_process_job(struct amd_sched_job *sched_job)
{
unsigned long flags;
struct amd_gpu_scheduler *sched;
if (!sched_job)
return;
sched = sched_job->sched;
spin_lock_irqsave(&sched->queue_lock, flags);
list_del(&sched_job->list);
atomic64_dec(&sched->hw_rq_count);
spin_unlock_irqrestore(&sched->queue_lock, flags);
sched->ops->process_job(sched, sched_job->job);
kfree(sched_job);
wake_up_interruptible(&sched->wait_queue);
}
/**
* Create a gpu scheduler
*

7
drivers/gpu/drm/amd/scheduler/gpu_scheduler.h
View File

@ -87,9 +87,9 @@ struct amd_sched_backend_ops {
int (*prepare_job)(struct amd_gpu_scheduler *sched,
struct amd_sched_entity *c_entity,
void *job);
void (*run_job)(struct amd_gpu_scheduler *sched,
struct amd_sched_entity *c_entity,
struct amd_sched_job *job);
struct fence *(*run_job)(struct amd_gpu_scheduler *sched,
struct amd_sched_entity *c_entity,
struct amd_sched_job *job);
void (*process_job)(struct amd_gpu_scheduler *sched, void *job);
};
@ -132,7 +132,6 @@ int amd_sched_wait_emit(struct amd_sched_entity *c_entity,
bool intr,
long timeout);
void amd_sched_process_job(struct amd_sched_job *sched_job);
uint64_t amd_sched_get_handled_seq(struct amd_gpu_scheduler *sched);
int amd_sched_entity_init(struct amd_gpu_scheduler *sched,