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amdgpu: Wrap dev_err() calls on vm faults with printk_ratelimit() 

It can be the case that upon GPU page faults we start trashing
the logs, and so let us ratelimit here to avoid that.

V2. Fix issue where calling dev_err_ratelimited separately for
    each line means that some lines corresponding to a single
    VM fault may or may not appear depending on the rate.
    - Michel Dänzer.

Reviewed-by: Christian König <christian.koenig@amd.com> (v1)
Signed-off-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Edward O'Callaghan 2016-11-07 15:35:09 +11:00 committed by Alex Deucher
parent b01dd025ca
commit 01615881ff
3 changed files with 27 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
View File

@ -1036,6 +1036,7 @@ static int gmc_v6_0_process_interrupt(struct amdgpu_device *adev,
if (amdgpu_vm_fault_stop == AMDGPU_VM_FAULT_STOP_FIRST)
gmc_v6_0_set_fault_enable_default(adev, false);
if (printk_ratelimit()) {
dev_err(adev->dev, "GPU fault detected: %d 0x%08x\n",
entry->src_id, entry->src_data);
dev_err(adev->dev, " VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x%08X\n",
@ -1043,6 +1044,7 @@ static int gmc_v6_0_process_interrupt(struct amdgpu_device *adev,
dev_err(adev->dev, " VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x%08X\n",
status);
gmc_v6_0_vm_decode_fault(adev, status, addr, 0);
}
return 0;
}

2
drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
View File

@ -1198,6 +1198,7 @@ static int gmc_v7_0_process_interrupt(struct amdgpu_device *adev,
if (amdgpu_vm_fault_stop == AMDGPU_VM_FAULT_STOP_FIRST)
gmc_v7_0_set_fault_enable_default(adev, false);
if (printk_ratelimit()) {
dev_err(adev->dev, "GPU fault detected: %d 0x%08x\n",
entry->src_id, entry->src_data);
dev_err(adev->dev, " VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x%08X\n",
@ -1205,6 +1206,7 @@ static int gmc_v7_0_process_interrupt(struct amdgpu_device *adev,
dev_err(adev->dev, " VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x%08X\n",
status);
gmc_v7_0_vm_decode_fault(adev, status, addr, mc_client);
}
return 0;
}

2
drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
View File

@ -1242,6 +1242,7 @@ static int gmc_v8_0_process_interrupt(struct amdgpu_device *adev,
if (amdgpu_vm_fault_stop == AMDGPU_VM_FAULT_STOP_FIRST)
gmc_v8_0_set_fault_enable_default(adev, false);
if (printk_ratelimit()) {
dev_err(adev->dev, "GPU fault detected: %d 0x%08x\n",
entry->src_id, entry->src_data);
dev_err(adev->dev, " VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x%08X\n",
@ -1249,6 +1250,7 @@ static int gmc_v8_0_process_interrupt(struct amdgpu_device *adev,
dev_err(adev->dev, " VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x%08X\n",
status);
gmc_v8_0_vm_decode_fault(adev, status, addr, mc_client);
}
return 0;
}