git/linux-net
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/ synced 2026-04-18 06:33:43 -04:00
Code Issues Packages Projects Releases Wiki Activity

drm/amdgpu: fix using the reserved VMID with gang submit

Browse Source 
We need to ensure that even when using a reserved VMID that the gang
members can still run in parallel.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König
2024-01-18 13:28:55 +01:00
committed by Alex Deucher
parent b32563859d
commit a6328c9c3d
3 changed files with 45 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
View File

@@ -6522,6 +6522,22 @@ void amdgpu_device_pcie_port_wreg(struct amdgpu_device *adev,
spin_unlock_irqrestore(&adev->pcie_idx_lock, flags);
}
/**
* amdgpu_device_get_gang - return a reference to the current gang
* @adev: amdgpu_device pointer
*
* Returns: A new reference to the current gang leader.
*/
struct dma_fence *amdgpu_device_get_gang(struct amdgpu_device *adev)
{
struct dma_fence *fence;
rcu_read_lock();
fence = dma_fence_get_rcu_safe(&adev->gang_submit);
rcu_read_unlock();
return fence;
}
/**
* amdgpu_device_switch_gang - switch to a new gang
* @adev: amdgpu_device pointer
@@ -6538,10 +6554,7 @@ struct dma_fence *amdgpu_device_switch_gang(struct amdgpu_device *adev,
do {
dma_fence_put(old);
rcu_read_lock();
old = dma_fence_get_rcu_safe(&adev->gang_submit);
rcu_read_unlock();
old = amdgpu_device_get_gang(adev);
if (old == gang)
break;