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drm/amdkfd: Add CU-masking ioctl to KFD

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CU-masking allows a KFD client to control the set of CUs used by a
user mode queue for executing compute dispatches. This can be used
for optimizing the partitioning of the GPU and minimize conflicts
between concurrent tasks.

Signed-off-by: Flora Cui <flora.cui@amd.com>
Signed-off-by: Kent Russell <kent.russell@amd.com>
Signed-off-by: Eric Huang <JinHuiEric.Huang@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This commit is contained in:
Felix Kuehling
2018-07-14 19:05:59 -04:00
committed by Oded Gabbay
parent a7fe68a1e8
commit 39e7f33186
9 changed files with 219 additions and 1 deletions
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30
drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
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@@ -325,6 +325,8 @@ int pqm_destroy_queue(struct process_queue_manager *pqm, unsigned int qid)
if (retval != -ETIME)
goto err_destroy_queue;
}
kfree(pqn->q->properties.cu_mask);
pqn->q->properties.cu_mask = NULL;
uninit_queue(pqn->q);
}
@@ -365,6 +367,34 @@ int pqm_update_queue(struct process_queue_manager *pqm, unsigned int qid,
return 0;
}
int pqm_set_cu_mask(struct process_queue_manager *pqm, unsigned int qid,
struct queue_properties *p)
{
int retval;
struct process_queue_node *pqn;
pqn = get_queue_by_qid(pqm, qid);
if (!pqn) {
pr_debug("No queue %d exists for update operation\n", qid);
return -EFAULT;
}
/* Free the old CU mask memory if it is already allocated, then
* allocate memory for the new CU mask.
*/
kfree(pqn->q->properties.cu_mask);
pqn->q->properties.cu_mask_count = p->cu_mask_count;
pqn->q->properties.cu_mask = p->cu_mask;
retval = pqn->q->device->dqm->ops.update_queue(pqn->q->device->dqm,
pqn->q);
if (retval != 0)
return retval;
return 0;
}
struct kernel_queue *pqm_get_kernel_queue(
struct process_queue_manager *pqm,
unsigned int qid)