netdev - Re: [PATCH v8 0/4] gpiolib: speed up GPIO array processing

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Message-ID: <CACRpkdbAG1N0v-BrXruf5088L0x3XwSHbFTWOFxjHQWx0LKz5g@mail.gmail.com>
Date:   Thu, 13 Sep 2018 11:22:06 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Janusz Krzysztofik <jmkrzyszt@...il.com>
Cc:     Jonathan Corbet <corbet@....net>,
        Miguel Ojeda Sandonis <miguel.ojeda.sandonis@...il.com>,
        Peter Korsgaard <peter.korsgaard@...co.com>,
        Peter Rosin <peda@...ntia.se>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Dominik Brodowski <linux@...inikbrodowski.net>,
        Greg KH <gregkh@...uxfoundation.org>, kishon@...com,
        Lars-Peter Clausen <lars@...afoo.de>,
        Michael Hennerich <Michael.Hennerich@...log.com>,
        Jonathan Cameron <jic23@...nel.org>,
        Hartmut Knaack <knaack.h@....de>,
        Peter Meerwald <pmeerw@...erw.net>,
        Jiri Slaby <jslaby@...e.com>, Willy Tarreau <w@....eu>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Sebastien Bourdelin <sebastien.bourdelin@...oirfairelinux.com>,
        Lukas Wunner <lukas@...ner.de>,
        Rojhalat Ibrahim <imr@...chenk.de>,
        Russell King <rmk+kernel@...linux.org.uk>,
        ext Tony Lindgren <tony@...mide.com>,
        Yegor Yefremov <yegorslists@...glemail.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>, linux-doc@...r.kernel.org,
        linux-i2c@...r.kernel.org, linux-mmc <linux-mmc@...r.kernel.org>,
        netdev <netdev@...r.kernel.org>, linux-iio@...r.kernel.org,
        devel@...verdev.osuosl.org, linux-serial@...r.kernel.org,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v8 0/4] gpiolib: speed up GPIO array processing

On Wed, Sep 5, 2018 at 11:49 PM Janusz Krzysztofik <jmkrzyszt@...il.com> wrote:

> The goal is to boost performance of get/set array functions while
> processing GPIO arrays which represent pins of a signle chip in
> hardware order.  If resulting performance is close to PIO, GPIO API
> can be used for data I/O without much loss of speed.

I applied the v8 to an immutable branch and pushed to kernelorg
so the build servers can churn it a bit, and if it works fine
then we can merge this into the devel branch and also set up
that as something other subsystems can pull in if they need it.

I'm really excited to merge this!

Yours,
Linus Walleij