From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7D21FC352AA for ; Wed, 2 Oct 2019 17:38:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 582CF222C3 for ; Wed, 2 Oct 2019 17:38:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570037905; bh=BiMF+rr+fWqAS746ljdAXP5lde95Gmakphk001kAUpk=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=FyL+7IPWQAkuRAQ9loZ6sMIL6YwJZb/CC5wdHrpaIxDdaOtt+SJ3QnoMlLRu4hN2x HoCJ24UIMUOlxejjXvvLevDqfEjomw2BOUt3MuGfC0saPANlmp/2afpooRsRhhMjtz XZGx5/OyekO9pL2wy7gOy5cHtWr7zSp4pHvJKu5k= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727756AbfJBRiV (ORCPT ); Wed, 2 Oct 2019 13:38:21 -0400 Received: from mail-wr1-f68.google.com ([209.85.221.68]:35750 "EHLO mail-wr1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727357AbfJBRiU (ORCPT ); Wed, 2 Oct 2019 13:38:20 -0400 Received: by mail-wr1-f68.google.com with SMTP id v8so13215wrt.2; Wed, 02 Oct 2019 10:38:18 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=YTmH8EafQxbdYgDMckejIA27/8MmwdAdTeYHGHhQuPA=; b=gWY1xml5LcvInf3O4tQ/lV/rFRNxLTuNPhucXdb89v/v6mcIdga8/m89+L3rCJ73/f ADT8gWPf4pAVp7cWcVAx1p+fOb7cjqKmfezu9AgrqTAqvBkb3Yb/L+uC6xV3VL5CEnai 1K27G5W7167AgUHudwoiZUqzULu1N6AMrPgHhw7PrzwFEeZDsVLJ83MVlXVO/1z2E9Yh pqr+Oe5fIHauPMBTLM1asAG/ybJcm5CcaXE9xbmjR1oU3YNcrOh1z4D9NaAFALBB3boK /N+luVkh8RWKolGmdABfcu79SsPgkxshVrY0fCYZ6NrVNLcx/LmYeBUGXIOAiMuKpIz2 ajew== X-Gm-Message-State: APjAAAX1XhY85fE8mscCNcTpxbj589Vye3znTEBKX/8cL3yVngoLfaje N0BdE8G3+jrgjgzNEgi6s94= X-Google-Smtp-Source: APXvYqylJhVMEK3ifyltGwEzTf9OuJVwke1QEVnvk2FVIatTz4vfsE+ISc2rNCBhpXG9RhGqGRoxkQ== X-Received: by 2002:adf:fe92:: with SMTP id l18mr3630971wrr.369.1570037898167; Wed, 02 Oct 2019 10:38:18 -0700 (PDT) Received: from kozik-lap ([194.230.155.145]) by smtp.googlemail.com with ESMTPSA id q66sm6742037wme.39.2019.10.02.10.38.16 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Wed, 02 Oct 2019 10:38:17 -0700 (PDT) Date: Wed, 2 Oct 2019 19:38:14 +0200 From: Krzysztof Kozlowski 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 Subject: Re: [PATCH v3 4/4] memory: samsung: exynos5422-dmc: Add support for interrupt from performance counters 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 Content-Disposition: inline In-Reply-To: <20191002060455.3834-5-l.luba@partner.samsung.com> User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@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