Re: [PATCH 2/2] usb: gadget: storage: make FSG_BUFLEN configurable on Kconfig

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Mon, 16 Dec 2013, Felipe Balbi wrote:

> On Mon, Dec 16, 2013 at 09:20:20PM +0000, Paul Zimmerman wrote:
> > > From: linux-usb-owner@xxxxxxxxxxxxxxx [mailto:linux-usb-owner@xxxxxxxxxxxxxxx] On Behalf Of Felipe Balbi
> > > Sent: Monday, December 16, 2013 11:42 AM
> > > 
> > > By making that configurable on Kconfig, we won't
> > > need to modify source code when we want to change
> > > the way f_mass_storage behaves for a specific
> > > product.
> > 
> > Shouldn't this value also be configurable via module params / sysfs,
> > the same way that USB_GADGET_STORAGE_NUM_BUFFERS is? I know new module
> > parameters are frowned upon, but the mass storage gadget has quite a
> > few of them already, so for consistency I think this one should be too.
> > 
> > Plus, in my experience, this value is the one that needs tuning for
> > performance, while NUM_BUFFERS is fine with its default value. So if
> > NUM_BUFFERS is allowed to be configured at runtime, this one should be
> > too.
> 
> I have no problems with that. Let's see what Michal and Alan think. What
> do you guys think ?

I don't mind.

On the other hand, if you're setting up a SuperSpeed mass-storage
gadget and you're concerned about throughput, then you probably should
use the uas gadget instead of g-mass-storage.

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




[Index of Archives]     [Linux Media]     [Linux Input]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [Old Linux USB Devel Archive]

  Powered by Linux