Re: [PATCH 5/8] usb: core: hcd: Convert from tasklet to BH workqueue

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On Tue, 20 Feb 2024 at 09:25, Davidlohr Bueso <dave@xxxxxxxxxxxx> wrote:
>
> In the past this tasklet removal was held up by Mauro's device not properly
> streaming - hopefully this no longer the case. Cc'ing.
>
> https://lore.kernel.org/all/20180216170450.yl5owfphuvltstnt@xxxxxxxxxxxxx/

Oh, lovely - an actual use-case where the old tasklet code has known
requirements.

Mauro - the BH workqueue should provide the same kind of latency as
the tasklets, and it would be good to validate early that yes, this
workqueue conversion works well in practice. Since you have an actual
real-life test-case, could you give it a try?

You can find the work in

   git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git
refs/heads/for-6.9-bh-conversions

although it's possible that Tejun has a newer version in some other
branch. Tejun - maybe point Mauro at something he can try out if you
have updated the conversion since?

                Linus




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