From 01615881ff4f529cd9af02bfe46f1adf1b7d5793 Mon Sep 17 00:00:00 2001 From: Edward O'Callaghan Date: Mon, 7 Nov 2016 15:35:09 +1100 Subject: [PATCH] amdgpu: Wrap dev_err() calls on vm faults with printk_ratelimit() MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 (v1) Signed-off-by: Edward O'Callaghan Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c | 16 +++++++++------- drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c | 16 +++++++++------- drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c | 16 +++++++++------- 3 files changed, 27 insertions(+), 21 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c index 3b6ad84df39b..64d3c1e6014c 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c @@ -1036,13 +1036,15 @@ 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); - 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", - addr); - dev_err(adev->dev, " VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x%08X\n", - status); - gmc_v6_0_vm_decode_fault(adev, status, addr, 0); + 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", + addr); + 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; } diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c index 18a0612764a9..fbe1d9ac500a 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c @@ -1198,13 +1198,15 @@ 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); - 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", - addr); - dev_err(adev->dev, " VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x%08X\n", - status); - gmc_v7_0_vm_decode_fault(adev, status, addr, mc_client); + 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", + addr); + 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; } diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c index af2c6ccf0e5b..12ea3404dd65 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c @@ -1242,13 +1242,15 @@ 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); - 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", - addr); - dev_err(adev->dev, " VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x%08X\n", - status); - gmc_v8_0_vm_decode_fault(adev, status, addr, mc_client); + 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", + addr); + 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; } -- 2.39.5