ewma_psr_time_read 216 drivers/gpu/drm/drm_self_refresh_helper.c delay = (ewma_psr_time_read(&sr_data->entry_avg_ms) + ewma_psr_time_read 217 drivers/gpu/drm/drm_self_refresh_helper.c ewma_psr_time_read(&sr_data->exit_avg_ms)) * 2;