On Sat, Aug 20, 2016 at 10:39:25AM +0530, Sagar Arun Kamble wrote:
> + obj = dev_priv->guc.slpc.vma->obj;
> + if (obj) {
OOPS.
> + intel_slpc_query_task_state(dev_priv);
> +
> + page = i915_gem_object_get_page(obj, 0);
> + if (page)
> + pv = kmap_atomic(page);
> + }
> +
> + if (pv) {
> + data = *(struct slpc_shared_data *) pv;
> + kunmap_atomic(pv);
Can kmap_atomic return zero?
> +
> + /*
> + * TODO: Define separate variables for slice and unslice
> + * frequencies for driver state variable.
> + */
> + dev_priv->rps.max_freq_softlimit =
> + data.task_state_data.freq_unslice_max;
> + dev_priv->rps.min_freq_softlimit =
> + data.task_state_data.freq_unslice_min;
These are user values, you do not get to arbitrarily rewrite them.
You control dev_priv->rps.[min|max]_freq.
-Chris
--
Chris Wilson, Intel Open Source Technology Centre
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