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

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Message-ID: <CACRpkdadjPn82G4TMKyyQtkju=oA4EX=GNxs8KRtrQ7CcqVOog@mail.gmail.com>
Date:   Thu, 12 May 2022 23:54:23 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Allen Pais <apais@...ux.microsoft.com>
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
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        Vinod Koul <vkoul@...nel.org>,
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Subject: Re: [RFC 1/1] drivers/dma/*: replace tasklets with workqueue

On Fri, May 6, 2022 at 7:43 PM Allen Pais <apais@...ux.microsoft.com> wrote:

>  - Concerns regarding throughput, would workqueues be as efficient as tasklets (Vinod)

You need to ask the scheduler people about this.

The workqueues goes deep into the scheduler and I can't make
out how they are prioritized, but they are certainly not treated
like any other task.

Yours,
Linus Walleij