[PATCH 2/6] drm/amdgpu: cleanup GPU recovery check a bit

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Am 23.08.2018 um 04:54 schrieb Huang Rui:
> On Wed, Aug 22, 2018 at 12:04:53PM +0200, Christian König wrote:
>> Check if we should call the function instead of providing the forced
>> flag.
>>
>> Signed-off-by: Christian König <christian.koenig at amd.com>
>> ---
>>   drivers/gpu/drm/amd/amdgpu/amdgpu.h        |  3 ++-
>>   drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 38 ++++++++++++++++++++----------
>>   drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c  |  2 +-
>>   drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c    |  4 ++--
>>   drivers/gpu/drm/amd/amdgpu/amdgpu_job.c    |  3 ++-
>>   drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c      |  4 ++--
>>   drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c      |  3 ++-
>>   7 files changed, 36 insertions(+), 21 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
>> index 19ef7711d944..340e40d03d54 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
>> @@ -1158,8 +1158,9 @@ int emu_soc_asic_init(struct amdgpu_device *adev);
>>   #define amdgpu_asic_need_full_reset(adev) (adev)->asic_funcs->need_full_reset((adev))
>>   
>>   /* Common functions */
>> +bool amdgpu_device_should_recover_gpu(struct amdgpu_device *adev);
>>   int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
>> -			      struct amdgpu_job* job, bool force);
>> +			      struct amdgpu_job* job);
>>   void amdgpu_device_pci_config_reset(struct amdgpu_device *adev);
>>   bool amdgpu_device_need_post(struct amdgpu_device *adev);
>>   
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
>> index c23339d8ae2d..9f5e4be76d5e 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
>> @@ -3244,32 +3244,44 @@ static int amdgpu_device_reset_sriov(struct amdgpu_device *adev,
>>   	return r;
>>   }
>>   
>> +/**
>> + * amdgpu_device_should_recover_gpu - check if we should try GPU recovery
>> + *
>> + * @adev: amdgpu device pointer
>> + *
>> + * Check amdgpu_gpu_recovery and SRIOV status to see if we should try to recover
>> + * a hung GPU.
>> + */
>> +bool amdgpu_device_should_recover_gpu(struct amdgpu_device *adev)
>> +{
>> +	if (!amdgpu_device_ip_check_soft_reset(adev)) {
>> +		DRM_INFO("Timeout, but no hardware hang detected.\n");
>> +		return false;
>> +	}
>> +
>> +	if (amdgpu_gpu_recovery == 0 || (amdgpu_gpu_recovery == -1  &&
>> +					 !amdgpu_sriov_vf(adev))) {
>> +		DRM_INFO("GPU recovery disabled.\n");
>> +		return false;
>> +	}
>> +
>> +	return true;
>> +}
>> +
>>   /**
>>    * amdgpu_device_gpu_recover - reset the asic and recover scheduler
>>    *
>>    * @adev: amdgpu device pointer
>>    * @job: which job trigger hang
>> - * @force: forces reset regardless of amdgpu_gpu_recovery
>>    *
>>    * Attempt to reset the GPU if it has hung (all asics).
>>    * Returns 0 for success or an error on failure.
>>    */
>>   int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
>> -			      struct amdgpu_job *job, bool force)
>> +			      struct amdgpu_job *job)
>>   {
> In my view, actually, we don't need return as "int" for this function.
> Because, no calling is to check the return value.

Yeah, that is also something I noticed.

But for now this cleanup is only about the force flag and the check if 
the function should be called or not.

> Others looks good for me.
> Reviewed-by: Huang Rui <ray.huang at amd.com>

Thanks,
Christian.

>
>>   	int i, r, resched;
>>   
>> -	if (!force && !amdgpu_device_ip_check_soft_reset(adev)) {
>> -		DRM_INFO("No hardware hang detected. Did some blocks stall?\n");
>> -		return 0;
>> -	}
>> -
>> -	if (!force && (amdgpu_gpu_recovery == 0 ||
>> -			(amdgpu_gpu_recovery == -1  && !amdgpu_sriov_vf(adev)))) {
>> -		DRM_INFO("GPU recovery disabled.\n");
>> -		return 0;
>> -	}
>> -
>>   	dev_info(adev->dev, "GPU reset begin!\n");
>>   
>>   	mutex_lock(&adev->lock_reset);
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
>> index e74d620d9699..68cccebb8463 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
>> @@ -702,7 +702,7 @@ static int amdgpu_debugfs_gpu_recover(struct seq_file *m, void *data)
>>   	struct amdgpu_device *adev = dev->dev_private;
>>   
>>   	seq_printf(m, "gpu recover\n");
>> -	amdgpu_device_gpu_recover(adev, NULL, true);
>> +	amdgpu_device_gpu_recover(adev, NULL);
>>   
>>   	return 0;
>>   }
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
>> index 1abf5b5bac9e..b927e8798534 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
>> @@ -105,8 +105,8 @@ static void amdgpu_irq_reset_work_func(struct work_struct *work)
>>   	struct amdgpu_device *adev = container_of(work, struct amdgpu_device,
>>   						  reset_work);
>>   
>> -	if (!amdgpu_sriov_vf(adev))
>> -		amdgpu_device_gpu_recover(adev, NULL, false);
>> +	if (!amdgpu_sriov_vf(adev) && amdgpu_device_should_recover_gpu(adev))
>> +		amdgpu_device_gpu_recover(adev, NULL);
>>   }
>>   
>>   /**
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
>> index 391e2f7c03aa..265ff90f4e01 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
>> @@ -37,7 +37,8 @@ static void amdgpu_job_timedout(struct drm_sched_job *s_job)
>>   		  job->base.sched->name, atomic_read(&ring->fence_drv.last_seq),
>>   		  ring->fence_drv.sync_seq);
>>   
>> -	amdgpu_device_gpu_recover(ring->adev, job, false);
>> +	if (amdgpu_device_should_recover_gpu(ring->adev))
>> +		amdgpu_device_gpu_recover(ring->adev, job);
>>   }
>>   
>>   int amdgpu_job_alloc(struct amdgpu_device *adev, unsigned num_ibs,
>> diff --git a/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c b/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c
>> index 078f70faedcb..8cbb4655896a 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c
>> @@ -266,8 +266,8 @@ static void xgpu_ai_mailbox_flr_work(struct work_struct *work)
>>   	}
>>   
>>   	/* Trigger recovery for world switch failure if no TDR */
>> -	if (amdgpu_lockup_timeout == 0)
>> -		amdgpu_device_gpu_recover(adev, NULL, true);
>> +	if (amdgpu_device_should_recover_gpu(adev))
>> +		amdgpu_device_gpu_recover(adev, NULL);
>>   }
>>   
>>   static int xgpu_ai_set_mailbox_rcv_irq(struct amdgpu_device *adev,
>> diff --git a/drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c b/drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c
>> index 9fc1c37344ce..842567b53df5 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c
>> @@ -521,7 +521,8 @@ static void xgpu_vi_mailbox_flr_work(struct work_struct *work)
>>   	}
>>   
>>   	/* Trigger recovery due to world switch failure */
>> -	amdgpu_device_gpu_recover(adev, NULL, false);
>> +	if (amdgpu_device_should_recover_gpu(adev))
>> +		amdgpu_device_gpu_recover(adev, NULL);
>>   }
>>   
>>   static int xgpu_vi_set_mailbox_rcv_irq(struct amdgpu_device *adev,
>> -- 
>> 2.14.1
>>
>> _______________________________________________
>> amd-gfx mailing list
>> amd-gfx at lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/amd-gfx



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