Ok, I see. Maybe it's better to provide these diagrams in books for learners. Rajaram just recommended me one book and it looks good to me :). I have replied and looped the email in the mail-list. On Fri, 2013-08-02 at 10:53 +0800, Greg KH wrote: > On Fri, Aug 02, 2013 at 09:56:17AM +0800, Chen Wang wrote: > > On Thu, 2013-08-01 at 10:34 -0400, Alan Stern wrote: > > > On Thu, 1 Aug 2013, Oliver Neukum wrote: > > > > > > > On Thu, 2013-08-01 at 17:13 +0800, Chen Wang wrote: > > > > > hello, > > > > > I'm reading code of usb core and driver model/sysfs. I believe they are > > > > > designed with OOP. > > > > > > > > Yes, much of the code is OO. However, we usually > > > > don't overwrite methods. > > > > > > > > > So, do we have any UML design diagrams for better > > > > > > > > No. The code was designed without diagrams. > > > > > > > > > understanding? I can't image newbies can ramp up quickly in front of > > > > > such tons of codes without a high-level design guidance, though I > > > > > believe I can understand them finally after days ;). > > > > > > > > You can write a USB driver without understanding driver > > > > core. The driver core is needed only to understand > > > > probing and power management in usbcore. > > > > > > On the other hand, patches to improve the documentation are always > > > welcome. :-) > > My draft idea is some UML diagrams (in high-level) may help > > understanding the arch. Actually I am trying to write some by myself > > when I am reading the code. Not sure if kernel would accept a graph (in > > what format?) due to seems kernel documentation are all in plain text. > > I doubt UML is really needed to understand the driver core, as it's > probably more work to try to read them, than to read the code itself. > > And very few people actually touch the driver core, so its use would be > quite limited. > > thanks, > > greg k-h -- 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
