From: Greg KH <gregkh@linuxfoundation.org>
To: Michael Grzeschik <m.grzeschik@pengutronix.de>
Cc: linux-usb@vger.kernel.org, linux-media@vger.kernel.org,
balbi@kernel.org, paul.elder@ideasonboard.com,
kieran.bingham@ideasonboard.com, nicolas@ndufresne.ca,
laurent.pinchart@ideasonboard.com, kernel@pengutronix.de
Subject: Re: [PATCH v3] usb: gadget: uvc: increase worker prio to WQ_HIGHPRI
Date: Fri, 19 Aug 2022 10:33:32 +0200 [thread overview]
Message-ID: <Yv9K3GPsyw6ZAEMm@kroah.com> (raw)
In-Reply-To: <20220720144641.3480432-1-m.grzeschik@pengutronix.de>
On Wed, Jul 20, 2022 at 04:46:41PM +0200, Michael Grzeschik wrote:
> Likewise to the uvcvideo hostside driver, this patch is changing the
"Likewise" implies a previous patch being mentioned, which I do not see
here :(
> simple workqueue to an async_wq with higher priority. This ensures that
> the worker will not be scheduled away while the video stream is handled.
How will this ensure that? What happens if yet-another higher priority
task comes in? This feels like a race that will just never be won
without fixing this properly.
thanks,
greg k-h
next prev parent reply other threads:[~2022-08-19 8:36 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-20 14:46 [PATCH v3] usb: gadget: uvc: increase worker prio to WQ_HIGHPRI Michael Grzeschik
2022-08-19 8:33 ` Greg KH [this message]
2022-09-07 21:42 ` Michael Grzeschik
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