About 10 years ago, there was a discussion about the poor performance of dummy_hcd due to the use of jiffies instead of hrtimers [1]. There was a proposal to switch to hrtimers, but the patch never made it into the mainline, and I cannot figure out why. This patch set brings the idea back to the mailing list with the intention of improving the overall performance of this driver. [1](https://linux-usb.vger.kernel.narkive.com/Fdt5oBR8/dummy-hcd-performance-correctness) Marcello Sylvester Bauer (2): usb: gadget: dummy_hcd: Switch to hrtimer transfer scheduler usb: gadget: dummy_hcd: Set transfer interval to 1 microframe drivers/usb/gadget/udc/dummy_hcd.c | 37 ++++++++++++++++++------------ 1 file changed, 22 insertions(+), 15 deletions(-) -- 2.44.0
