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Date:   Wed, 25 May 2022 11:24:46 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Allen Pais <apais@...ux.microsoft.com>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Arnd Bergmann <arnd@...db.de>
Cc:     olivier.dautricourt@...lia.com, sr@...x.de, vkoul@...nel.org,
        keescook@...omium.org, linux-hardening@...r.kernel.org,
        ludovic.desroches@...rochip.com, tudor.ambarus@...rochip.com,
        f.fainelli@...il.com, rjui@...adcom.com, sbranden@...adcom.com,
        bcm-kernel-feedback-list@...adcom.com, nsaenz@...nel.org,
        paul@...pouillou.net, Eugeniy.Paltsev@...opsys.com,
        gustavo.pimentel@...opsys.com, vireshk@...nel.org,
        andriy.shevchenko@...ux.intel.com, leoyang.li@....com,
        zw@...kernel.org, wangzhou1@...ilicon.com, shawnguo@...nel.org,
        s.hauer@...gutronix.de, sean.wang@...iatek.com,
        matthias.bgg@...il.com, afaerber@...e.de, mani@...nel.org,
        logang@...tatee.com, sanju.mehta@....com, daniel@...que.org,
        haojian.zhuang@...il.com, robert.jarzmik@...e.fr,
        agross@...nel.org, bjorn.andersson@...aro.org,
        krzysztof.kozlowski@...aro.org, green.wan@...ive.com,
        orsonzhai@...il.com, baolin.wang7@...il.com, zhang.lyra@...il.com,
        patrice.chotard@...s.st.com, wens@...e.org,
        jernej.skrabec@...il.com, samuel@...lland.org,
        dmaengine@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC 1/1] drivers/dma/*: replace tasklets with workqueue

On Tue, Apr 19, 2022 at 11:17 PM Allen Pais <apais@...ux.microsoft.com> wrote:

> The tasklet is an old API which will be deprecated, workqueue API
> cab be used instead of them.
>
> This patch replaces the tasklet usage in drivers/dma/* with a
> simple work.
>
> Github: https://github.com/KSPP/linux/issues/94
>
> Signed-off-by: Allen Pais <apais@...ux.microsoft.com>

Paging Vincent Guittot and Arnd Bergmann on the following question
on this patch set:

- Will replacing tasklets with workque like this negatively impact the
  performance on DMA engine bottom halves?

For reference:
https://lore.kernel.org/dmaengine/YoI4J8taHehMpjFj@matsya/

Yours,
Linus Walleij

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