linux-kernel - Re: [PATCH v3] tty: tty_port: add workqueue to flip tty buffer

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Message-Id: <20251126144650.2799567-1-jackzxcui1989@163.com>
Date: Wed, 26 Nov 2025 22:46:50 +0800
From: Xin Zhao <jackzxcui1989@....com>
To: gregkh@...uxfoundation.org
Cc: hch@...radead.org,
	jackzxcui1989@....com,
	jirislaby@...nel.org,
	linux-kernel@...r.kernel.org,
	linux-serial@...r.kernel.org,
	tj@...nel.org
Subject: Re: [PATCH v3] tty: tty_port: add workqueue to flip tty buffer

On Wed, 26 Nov 2025 13:10:49 +0100 Greg KH <gregkh@...uxfoundation.org> wrote:

> I don't know, what have you found in your testing?  Will multiple
> workqueues cause too much overhead for large multi-port systems (i.e.
> modem banks?)
> 
> Perhaps start with just a single workqueue and then increase it if there
> is contention later if people notice?

OK. I will allocate single workqueue of one tty_driver in v4, simplifying
the logic for creating and releasing the workqueue.

--
Xin Zhao