On Thu, Aug 14, 2014 at 2:07 PM, Jeff Haran <[email protected]> wrote: >> -----Original Message----- >> From: [email protected] >> [mailto:[email protected]] On Behalf Of Jerry >> Snitselaar >> Sent: Thursday, August 14, 2014 10:42 AM >> To: leo kirotawa >> Cc: kernelnewbies >> Subject: Re: Skb Documentation? >> >> On Thu Aug 14 14, leo kirotawa wrote: >> > git grep is your friend. :) >> > [1]http://www.linuxjournal.com/article/1312 >> >> That and learn to use cscope and/or ctags >> >> Jerry > > I've found that the best browser for trying to understand kernel code comes > from a commercial source, but you should be able to use it for free. You just > need to sign up to create an account and when I did it, it was free. Check > out https://scan.coverity.com/. The Coverity browser is C language > knowledgeable and the Coverity people regularly do analyses of several open > source projects, including Linux. > > Where it really shines over tools like cscope or ctags is when you are trying > to understand how a given field of a structure is used, or any other case > where the same function or variable name is used in several different > contexts. For example, let's say you are interested in how the kernel uses > the struct sk_buff cb field. If you do a search for "cb" in the kernel > sources using cscope, you get hits for a myriad of instances of variables and > structure fields named "cb" that have nothing to do with the sk_buff cb > field. Weeding out all the false positives is quite tedious and time > consuming. But the Coverity browser knows the difference between (struct > sk_buff *)->cb and all the cbs that represent callback functions in unrelated > code. Big time saver. > > Jeff Haran > > > _______________________________________________ > Kernelnewbies mailing list > [email protected] > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies I was using lxr for a while but this looks good. Thanks for the information Jeff. If you want to send out some patches for me I have two, one is from today that I just sent and the other one is hard to find due to be not learning skbs. I will resend it to you directly if you like. Nick
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