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

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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.

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

>  	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
> 
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> amd-gfx at lists.freedesktop.org
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