[Intel-gfx] [PATCH 11/19] drm/i915: Do a nonblocking wait first in pread/pwrite

[Joonas Lahtinen]

On to, 2016-08-04 at 20:52 +0100, Chris Wilson wrote:
> If we try and read or write to an active request, we first must wait
> upon the GPU completing that request. Let's do that without holding the
> mutex (and so allow someone else to access the GPU whilst we wait). Upn

STILL TYPO                                                    Upon ---^

>  	/* Bounds check destination. */
>  	if (args->offset > obj->base.size ||
>  	    args->size > obj->base.size - args->offset) {
>  		ret = -EINVAL;
> -		goto out;
> +		goto err;
>  	}
>  
> -	trace_i915_gem_object_pwrite(obj, args->offset, args->size);
> +	ret = __unsafe_wait_rendering(obj, to_rps_client(file), false);
> +	if (ret)
> +		goto err;
>  
> +	intel_runtime_pm_get(dev_priv);
> +
> +	ret = i915_mutex_lock_interruptible(dev);
> +	if (ret)
> +		goto err_rpm;
> +
> +	trace_i915_gem_object_pwrite(obj, args->offset, args->size);

This trace is still moved, maybe add your reasoning to commit message.

With those addressed (and the RPM fix in separate patch);

Reviewed-by: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>

Regards, Joonas
-- 
Joonas Lahtinen
Open Source Technology Center
Intel Corporation