From b5aa3f4aef724e9c0f626dcf69948b22efcc5176 Mon Sep 17 00:00:00 2001 From: Felix Kuehling Date: Mon, 16 Jul 2018 19:10:37 -0400 Subject: drm/amdkfd: Call kfd2kgd.set_compute_idle User mode queue submissions don't go through KFD. Therefore we don't know exactly when compute is idle or not idle. We use the existence of user mode queues on a device as an approximation. register_process is called when the first queue of a process is created. Conversely unregister_process is called when the last queue is destroyed. The first process that is registered takes compute out of idle. The last process that is unregisters sets compute back to idle. Signed-off-by: Felix Kuehling Reviewed-by: Eric Huang Reviewed-by: Alex Deucher Signed-off-by: Oded Gabbay --- drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'drivers/gpu/drm') diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c index ace94d6e54cf..ec0d62a16e53 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c @@ -782,7 +782,8 @@ static int register_process(struct device_queue_manager *dqm, retval = dqm->asic_ops.update_qpd(dqm, qpd); - dqm->processes_count++; + if (dqm->processes_count++ == 0) + dqm->dev->kfd2kgd->set_compute_idle(dqm->dev->kgd, false); dqm_unlock(dqm); @@ -805,7 +806,9 @@ static int unregister_process(struct device_queue_manager *dqm, if (qpd == cur->qpd) { list_del(&cur->list); kfree(cur); - dqm->processes_count--; + if (--dqm->processes_count == 0) + dqm->dev->kfd2kgd->set_compute_idle( + dqm->dev->kgd, true); goto out; } } -- cgit v1.2.3