All of lore.kernel.org
 help / color / mirror / Atom feed
* [PATCH 0/3] usb: gadget: uvc: improve uvc gadget performance
@ 2021-04-21 21:15 Michael Grzeschik
  2021-04-21 21:15 ` [PATCH 1/3] usb: gadget: uvc: make uvc_num_requests depend on gadget speed Michael Grzeschik
                   ` (3 more replies)
  0 siblings, 4 replies; 7+ messages in thread
From: Michael Grzeschik @ 2021-04-21 21:15 UTC (permalink / raw)
  To: linux-usb; +Cc: balbi, laurent.pinchart, kernel

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


^ permalink raw reply	[flat|nested] 7+ messages in thread

end of thread, other threads:[~2021-04-22  4:08 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-04-21 21:15 [PATCH 0/3] usb: gadget: uvc: improve uvc gadget performance Michael Grzeschik
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

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.