linux-kernel - Re: [PATCH v3 4/4] memory: samsung: exynos5422-dmc: Add support for interrupt from performance counters

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Message-ID: <20191002173814.GF21463@kozik-lap>
Date:   Wed, 2 Oct 2019 19:38:14 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Lukasz Luba <l.luba@...tner.samsung.com>
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, b.zolnierkie@...sung.com,
        kgene@...nel.org, mark.rutland@....com, cw00.choi@...sung.com,
        kyungmin.park@...sung.com, m.szyprowski@...sung.com,
        s.nawrocki@...sung.com, myungjoo.ham@...sung.com,
        robh+dt@...nel.org, willy.mh.wolff.ml@...il.com
Subject: Re: [PATCH v3 4/4] memory: samsung: exynos5422-dmc: Add support for
 interrupt from performance counters

On Wed, Oct 02, 2019 at 08:04:55AM +0200, Lukasz Luba wrote:
> Introduce a new interrupt driven mechanism for managing speed of the
> memory controller. The interrupts are generated due to performance
> counters overflow. The performance counters might track memory reads,
> writes, transfers, page misses, etc. In the basic algorithm tracking
> read transfers and calculating memory pressure should be enough to
> skip polling mode in devfreq.
> 
> Signed-off-by: Lukasz Luba <l.luba@...tner.samsung.com>
> ---
>  drivers/memory/samsung/exynos5422-dmc.c | 345 ++++++++++++++++++++++--

Thanks, applied.

Best regards,
Krzysztof