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drm/amdgpu: Make enforce_isolation setting per GPU

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This commit makes enforce_isolation setting to be per GPU and per
partition by adding the enforce_isolation array to the adev structure.
The adev variable is set based on the global enforce_isolation module
parameter during device initialization.

In amdgpu_ids.c, the adev->enforce_isolation value for the current GPU
is used to determine whether to enforce isolation between graphics and
compute processes on that GPU.

In amdgpu_ids.c, the adev->enforce_isolation value for the current GPU
and partition is used to determine whether to enforce isolation between
graphics and compute processes on that GPU and partition.

This allows the enforce_isolation setting to be controlled individually
for each GPU and each partition, which is useful in a system with
multiple GPUs and partitions where different isolation settings might be
desired for different GPUs and partitions.

v2: fix loop in amdgpu_vmid_mgr_init() (Alex)

Cc: Christian König <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Suggested-by: Christian König <christian.koenig@amd.com>
This commit is contained in:
Srinivasan Shanmugam
2024-07-29 21:35:26 +05:30
committed by Alex Deucher
parent ee7a846ea2
commit 9659520419
5 changed files with 21 additions and 8 deletions
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17
drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c
View File

@@ -424,7 +424,7 @@ int amdgpu_vmid_grab(struct amdgpu_vm *vm, struct amdgpu_ring *ring,
if (r || !idle)
goto error;
if (amdgpu_vmid_uses_reserved(vm, vmhub)) {
if (amdgpu_vmid_uses_reserved(adev, vm, vmhub)) {
r = amdgpu_vmid_grab_reserved(vm, ring, job, &id, fence);
if (r || !id)
goto error;
@@ -476,15 +476,19 @@ error:
/*
* amdgpu_vmid_uses_reserved - check if a VM will use a reserved VMID
* @adev: amdgpu_device pointer
* @vm: the VM to check
* @vmhub: the VMHUB which will be used
*
* Returns: True if the VM will use a reserved VMID.
*/
bool amdgpu_vmid_uses_reserved(struct amdgpu_vm *vm, unsigned int vmhub)
bool amdgpu_vmid_uses_reserved(struct amdgpu_device *adev,
struct amdgpu_vm *vm, unsigned int vmhub)
{
return vm->reserved_vmid[vmhub] ||
(enforce_isolation && AMDGPU_IS_GFXHUB(vmhub));
(adev->enforce_isolation[(vm->root.bo->xcp_id != AMDGPU_XCP_NO_PARTITION) ?
vm->root.bo->xcp_id : 0] &&
AMDGPU_IS_GFXHUB(vmhub));
}
int amdgpu_vmid_alloc_reserved(struct amdgpu_device *adev,
@@ -600,9 +604,10 @@ void amdgpu_vmid_mgr_init(struct amdgpu_device *adev)
}
}
/* alloc a default reserved vmid to enforce isolation */
if (enforce_isolation)
amdgpu_vmid_alloc_reserved(adev, AMDGPU_GFXHUB(0));
for (i = 0; i < (adev->xcp_mgr ? adev->xcp_mgr->num_xcps : 1); i++) {
if (adev->enforce_isolation[i])
amdgpu_vmid_alloc_reserved(adev, AMDGPU_GFXHUB(i));
}
}
/**