On Wed, 2 Sep 2015, Peter Chen wrote: > The bulk queue tests are used to show 'best performance' for bulk > transfer, we are often asked this question by users. > > It's result should be very close to IC simulation, in order > to get that, the device side should also need to prepare enough > queue. > > We have got the 'best performance' (IN: ~41MB, OUT: ~39MB) at i.mx platform > (USB2, ARM Cortex A9) with below command: > > Host side: > modprobe usbtest > ./testusb -a -t 27 -g 64 -s 16384 > ./testusb -a -t 28 -g 64 -s 16384 > Gadget side: > modprobe g_zero loopdefault=1 qlen=64 buflen=16384 > > Signed-off-by: Peter Chen <peter.chen@xxxxxxxxxxxxx> > --- > > I am not sure if it is good to reuse iso structure, so I take > it as RFC. If reuse is accepted, I will rename the iso > structures to common one. > > drivers/usb/misc/usbtest.c | 88 ++++++++++++++++++++++++++++++++++++---------- > 1 file changed, 69 insertions(+), 19 deletions(-) > > diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c > index ad6dd4a..f1faeb9 100644 > --- a/drivers/usb/misc/usbtest.c > +++ b/drivers/usb/misc/usbtest.c > @@ -17,6 +17,7 @@ > static int override_alt = -1; > module_param_named(alt, override_alt, int, 0644); > MODULE_PARM_DESC(alt, ">= 0 to override altsetting selection"); > +static void iso_callback(struct urb *urb); > > /*-------------------------------------------------------------------------*/ > > @@ -239,7 +240,8 @@ static struct urb *usbtest_alloc_urb( > unsigned long bytes, > unsigned transfer_flags, > unsigned offset, > - u8 bInterval) > + u8 bInterval, > + bool queue_callback) Should this be named "is_iso" instead? It would be be more clear. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
