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drm/amdkfd: start using tlb_seq from the VM subsystem

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Instead of trying to figure out if a TLB flush is necessary or not use
the information provided by the VM subsystem now.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Philip Yang<Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König
2022-03-17 09:53:55 +01:00
committed by Alex Deucher
parent 5255e146c9
commit bffa91dadf
2 changed files with 8 additions and 0 deletions
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7
drivers/gpu/drm/amd/amdkfd/kfd_process.c
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@@ -1560,6 +1560,7 @@ int kfd_process_device_init_vm(struct kfd_process_device *pdd,
return ret;
}
pdd->drm_priv = drm_file->private_data;
pdd->tlb_seq = 0;
ret = kfd_process_device_reserve_ib_mem(pdd);
if (ret)
@@ -1949,8 +1950,14 @@ int kfd_reserved_mem_mmap(struct kfd_dev *dev, struct kfd_process *process,
void kfd_flush_tlb(struct kfd_process_device *pdd, enum TLB_FLUSH_TYPE type)
{
struct amdgpu_vm *vm = drm_priv_to_vm(pdd->drm_priv);
uint64_t tlb_seq = amdgpu_vm_tlb_seq(vm);
struct kfd_dev *dev = pdd->dev;
if (pdd->tlb_seq == tlb_seq)
return;
pdd->tlb_seq = tlb_seq;
if (dev->dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS) {
/* Nothing to flush until a VMID is assigned, which
* only happens when the first queue is created.