linux-kernel - Re: [PATCH] block/umem: convert tasklet to threaded irq

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Date:   Tue, 23 Mar 2021 17:24:37 +0000
From:   Christoph Hellwig <hch@...radead.org>
To:     Davidlohr Bueso <dave@...olabs.net>
Cc:     axboe@...nel.dk, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org, Davidlohr Bueso <dbueso@...e.de>
Subject: Re: [PATCH] block/umem: convert tasklet to threaded irq

On Mon, Mar 22, 2021 at 05:48:56PM -0700, Davidlohr Bueso wrote:
> Tasklets have long been deprecated as being too heavy on the system
> by running in irq context - and this is not a performance critical
> path. If a higher priority process wants to run, it must wait for
> the tasklet to finish before doing so. A more suitable equivalent
> is to converted to threaded irq instead and deal with the async
> processing in task context.

I'm really curious if this driver is still in use at all, or if we
can drop it.