diff options
| author | Felix Kuehling <Felix.Kuehling@amd.com> | 2017-11-02 00:21:57 +0100 |
|---|---|---|
| committer | Oded Gabbay <oded.gabbay@gmail.com> | 2017-11-26 10:31:32 +0100 |
| commit | 8c946b8988acec785bcf67088b6bd0747f36d2d3 (patch) | |
| tree | e52c0035df203f5c2aec012e369301ab964820a5 /drivers/gpu/drm | |
| parent | drm/amdkfd: Fix SDMA ring buffer size calculation (diff) | |
| download | linux-8c946b8988acec785bcf67088b6bd0747f36d2d3.tar.xz linux-8c946b8988acec785bcf67088b6bd0747f36d2d3.zip | |
drm/amdkfd: Fix SDMA oversubsription handling
SDMA only supports a fixed number of queues. HWS cannot handle
oversubscription.
Signed-off-by: shaoyun liu <shaoyun.liu@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c index 2bec902fc939..a3f1e62c60ba 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c @@ -191,6 +191,24 @@ int pqm_create_queue(struct process_queue_manager *pqm, switch (type) { case KFD_QUEUE_TYPE_SDMA: + if (dev->dqm->queue_count >= + CIK_SDMA_QUEUES_PER_ENGINE * CIK_SDMA_ENGINE_NUM) { + pr_err("Over-subscription is not allowed for SDMA.\n"); + retval = -EPERM; + goto err_create_queue; + } + + retval = create_cp_queue(pqm, dev, &q, properties, f, *qid); + if (retval != 0) + goto err_create_queue; + pqn->q = q; + pqn->kq = NULL; + retval = dev->dqm->ops.create_queue(dev->dqm, q, &pdd->qpd, + &q->properties.vmid); + pr_debug("DQM returned %d for create_queue\n", retval); + print_queue(q); + break; + case KFD_QUEUE_TYPE_COMPUTE: /* check if there is over subscription */ if ((sched_policy == KFD_SCHED_POLICY_HWS_NO_OVERSUBSCRIPTION) && |