[Intel-gfx] [PATCH 1/2] drm/i915/gvt: Stop checking for impossible interrupts from a kthread

[Zhenyu Wang]

On 2016.10.19 09:12:27 +0100, Chris Wilson wrote:
> The kthread will not be interrupted, don't even bother checking.
> 
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>

Reviewed-by: Zhenyu Wang <zhenyuw at linux.intel.com>

> ---
>  drivers/gpu/drm/i915/gvt/scheduler.c | 9 ++-------
>  1 file changed, 2 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/gvt/scheduler.c b/drivers/gpu/drm/i915/gvt/scheduler.c
> index b15cdf5978a9..4cedd3274da7 100644
> --- a/drivers/gpu/drm/i915/gvt/scheduler.c
> +++ b/drivers/gpu/drm/i915/gvt/scheduler.c
> @@ -423,12 +423,7 @@ static int workload_thread(void *priv)
>  		/*
>  		 * Always take i915 big lock first
>  		 */
> -		ret = i915_mutex_lock_interruptible(&gvt->dev_priv->drm);
> -		if (ret < 0) {
> -			gvt_err("i915 submission is not available, retry\n");
> -			schedule_timeout(1);
> -			continue;
> -		}
> +		mutex_lock(&gvt->dev_priv->drm.struct_mutex);
>  
>  		gvt_dbg_sched("ring id %d will dispatch workload %p\n",
>  				workload->ring_id, workload);
> @@ -447,7 +442,7 @@ static int workload_thread(void *priv)
>  				workload->ring_id, workload);
>  
>  		workload->status = i915_wait_request(workload->req,
> -						     I915_WAIT_INTERRUPTIBLE | I915_WAIT_LOCKED,
> +						     I915_WAIT_LOCKED,
>  						     NULL, NULL);
>  		if (workload->status != 0)
>  			gvt_err("fail to wait workload, skip\n");
> -- 
> 2.9.3
> 
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx

-- 
Open Source Technology Center, Intel ltd.

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