linux-kernel - Re: [PATCH v4 06/24] PM / devfreq: tegra30: Tune up boosting thresholds

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Message-ID: <fe402767-430b-7554-c1c5-c75d7dcd04aa@samsung.com>
Date:   Tue, 16 Jul 2019 20:55:15 +0900
From:   Chanwoo Choi <cw00.choi@...sung.com>
To:     Dmitry Osipenko <digetx@...il.com>,
        Thierry Reding <thierry.reding@...il.com>,
        MyungJoo Ham <myungjoo.ham@...sung.com>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Tomeu Vizoso <tomeu.vizoso@...labora.com>
Cc:     linux-pm@...r.kernel.org, linux-tegra@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 06/24] PM / devfreq: tegra30: Tune up boosting
 thresholds

On 19. 7. 8. 오전 7:32, Dmitry Osipenko wrote:
> Now that average-sustain coefficient / multiplier is gone, it won't hurt
> to re-tune the boosting thresholds to get a bit harder boosting for MCALL
> clients, resulting in a more reactive governing in a case of multimedia
> applications usage like 3d / video.
> 
> Signed-off-by: Dmitry Osipenko <digetx@...il.com>
> ---
>  drivers/devfreq/tegra30-devfreq.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/devfreq/tegra30-devfreq.c b/drivers/devfreq/tegra30-devfreq.c
> index 16f7e6cf3b99..2bf65409ddd8 100644
> --- a/drivers/devfreq/tegra30-devfreq.c
> +++ b/drivers/devfreq/tegra30-devfreq.c
> @@ -111,8 +111,8 @@ static struct tegra_devfreq_device_config actmon_device_configs[] = {
>  		.irq_mask = 1 << 26,
>  		.boost_up_coeff = 200,
>  		.boost_down_coeff = 50,
> -		.boost_up_threshold = 60,
> -		.boost_down_threshold = 40,
> +		.boost_up_threshold = 50,
> +		.boost_down_threshold = 25,
>  	},
>  	{
>  		/* MCCPU: memory accesses from the CPUs */
> 

It just adjusts the tunable point.
Reviewed-by: Chanwoo Choi <cw00.choi@...sung.com>

-- 
Best Regards,
Chanwoo Choi
Samsung Electronics