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Doing a Exponential moving average per nr_running++/-- does not guarantee a fixed sample rate which induces errors if there are lots of threads being enqueued/dequeued from the rq (Linpack mt). Instead of keeping track of the avg, the scheduler now keeps track of the integral of nr_running and allows the readers to perform filtering on top. Original-author: Sai Charan Gurrappadi <sgurrappadi@nvidia.com> Change-Id: Id946654f32fa8be0eaf9d8fa7c9a8039b5ef9fab Signed-off-by: Joseph Lo <josephl@nvidia.com> Signed-off-by: Andrew Bresticker <abrestic@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/174694 Reviewed-on: https://chromium-review.googlesource.com/272853 [jstultz: fwdported to 4.4] Signed-off-by: John Stultz <john.stultz@linaro.org>