From mboxrd@z Thu Jan 1 00:00:00 1970 From: Krzysztof Kozlowski Subject: Re: [PATCH v3 4/4] memory: samsung: exynos5422-dmc: Add support for interrupt from performance counters Date: Wed, 2 Oct 2019 19:38:14 +0200 Message-ID: <20191002173814.GF21463@kozik-lap> References: <20191002060455.3834-1-l.luba@partner.samsung.com> <20191002060455.3834-5-l.luba@partner.samsung.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Return-path: Content-Disposition: inline In-Reply-To: <20191002060455.3834-5-l.luba@partner.samsung.com> Sender: linux-kernel-owner@vger.kernel.org To: Lukasz Luba Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, b.zolnierkie@samsung.com, kgene@kernel.org, mark.rutland@arm.com, cw00.choi@samsung.com, kyungmin.park@samsung.com, m.szyprowski@samsung.com, s.nawrocki@samsung.com, myungjoo.ham@samsung.com, robh+dt@kernel.org, willy.mh.wolff.ml@gmail.com List-Id: devicetree@vger.kernel.org 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 > --- > drivers/memory/samsung/exynos5422-dmc.c | 345 ++++++++++++++++++++++-- Thanks, applied. Best regards, Krzysztof