linux-kernel - Re: [RFC 1/1] drivers/dma/*: replace tasklets with workqueue

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Message-ID: <CACRpkdZ2DFZRPHS1x0=M3_8zYvU-jpCG5Tm3863dXv51EhY+BA@mail.gmail.com>
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>
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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