From: Michael Grzeschik <m.grzeschik@pengutronix.de>
To: linux-usb@vger.kernel.org
Cc: balbi@kernel.org, laurent.pinchart@ideasonboard.com,
kernel@pengutronix.de
Subject: [PATCH 0/3] usb: gadget: uvc: improve uvc gadget performance
Date: Wed, 21 Apr 2021 23:15:10 +0200 [thread overview]
Message-ID: <20210421211513.29002-1-m.grzeschik@pengutronix.de> (raw)
This series improves the performance of the uvc video gadget by adding a
zero copy routine using the scatter list interface of the gadget. The
series also increases the amount of allocated requests depending of the
speed and it also reduces the interrupt load by only trigger on every
16th request in case of super-speed.
Michael Grzeschik (3):
usb: gadget: uvc: make uvc_num_requests depend on gadget speed
usb: gadget: uvc: add scatter gather support
usb: gadget: uvc: decrease the interrupt load to a quarter
drivers/usb/gadget/Kconfig | 1 +
drivers/usb/gadget/function/f_uvc.c | 1 +
drivers/usb/gadget/function/uvc.h | 15 ++-
drivers/usb/gadget/function/uvc_queue.c | 30 ++++-
drivers/usb/gadget/function/uvc_queue.h | 5 +-
drivers/usb/gadget/function/uvc_video.c | 145 +++++++++++++++++++-----
6 files changed, 164 insertions(+), 33 deletions(-)
--
2.29.2
next reply other threads:[~2021-04-21 21:15 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-21 21:15 Michael Grzeschik [this message]
2021-04-21 21:15 ` [PATCH 1/3] usb: gadget: uvc: make uvc_num_requests depend on gadget speed Michael Grzeschik
2021-04-21 21:15 ` [PATCH 2/3] usb: gadget: uvc: add scatter gather support Michael Grzeschik
2021-04-22 4:07 ` kernel test robot
2021-04-22 4:07 ` kernel test robot
2021-04-21 21:15 ` [PATCH 3/3] usb: gadget: uvc: decrease the interrupt load to a quarter Michael Grzeschik
2021-04-21 21:59 ` [PATCH 0/3] usb: gadget: uvc: improve uvc gadget performance Laurent Pinchart
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