Quoting Chris Wilson (2019-09-12 11:13:39)
> +#if IS_ENABLED(CONFIG_PM)
> +
> +static inline s64 ktime_since(const ktime_t kt)
> +{
> + return ktime_to_ns(ktime_sub(ktime_get(), kt));
> +}
> +
> +void i915_pmu_gt_parked(struct drm_i915_private *i915)
> +{
> + struct i915_pmu *pmu =
As we track when we put the GT device to sleep upon idling, we can use
that callback to sample the current rc6 counters and record the
timestamp for estimating samples after that point while asleep.
v2: Stick to using ktime_t
v3: Track user_wakerefs that interfere with the new
