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Subject: Re: [RFC 1/1] drivers/dma/*: replace tasklets with workqueue
From:   Allen Pais <apais@linux.microsoft.com>
In-Reply-To: <YmiuUy+PAjKEq6uE@matsya>
Date:   Wed, 27 Apr 2022 08:53:26 -0700
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References: <20220419211658.11403-1-apais@linux.microsoft.com>
 <20220419211658.11403-2-apais@linux.microsoft.com> <YmiuUy+PAjKEq6uE@matsya>
To:     Vinod Koul <vkoul@kernel.org>
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>> The tasklet is an old API which will be deprecated, workqueue API
>> cab be used instead of them.
>=20
> What is the reason for tasklet removal, I am not sure old is a reason =
to
> remove an API...

 While we moved to modernised version of tasklet API, there was
A request to entirely remove tasklets. The following patch is an attempt
Towards it.=20

>=20
>>=20
>> This patch replaces the tasklet usage in drivers/dma/* with a
>> simple work.
>=20
> Dmaengines need very high throughput, one of the reasons in dmaengine
> API design to use tasklet was higher priority given to them. Will the
> workqueue allow that...?

  It is interesting that you brought up this point. I haven=E2=80=99t =
had the opportunity
To test the changes by stressing the kernel, what tests/benchmarks would
You prefer to see run on with these changes.

Thanks.

>=20
> --=20
> ~Vinod