Thank you so much Valdis and Aruna. Probably, the problem was I tried to search more on internet rather than kernel source and after 3 hours(I know it is long), I understood that I am nowhere going in the right direction.
I have the mm_struct * with me. grepping is more useful. Thanks again to all the people who are supporting kernel newbies :) On Mon, Aug 25, 2014 at 10:12 PM, Aruna Hewapathirane < aruna.hewapathir...@gmail.com> wrote: > >> I want process related information like rss.(we can get this by doing >> cat /proc/<pid>status) Is there a way to get this from >> within a kernel >> module? I checked out the sources on /proc filesystem. They all show how to >> create, read, write a new >> > >> proc file. But I want to read from an existing proc file specifically >> /proc/<pid>/status >> > > Have a look here: https://gist.github.com/Aruna-Hewapathirane > /f41e7291e15bae6062a1 does exactly what your trying to do. > > >> Can anyone please point me to either resources or guide me to >> accomplish the task of reading information from >> > >>/proc/files... >> > > I would suggest you go through the source code for PS : http://procps. > sourceforge.net/ and carefully study how things are done. > > This will also help: https://www.kernel.org/doc/Documentation/filesystems/ > proc.txt > > That being said I have to agree fully with Valdis the best way is always > to grep through the kernel that way you get to see code that is being used > and how things are done. > > With all due respect to all the more experienced and knowledgeable folks > on the list I had great difficulty when I first started out accessing > information and I have no wish to see anyone who is fascinated by the > kernel and wants to mess with the internals be it for fun as a hobby to > learn or for serious patching and contributing to the kernel walk away > frustrated like I did so many times. ( I always walked right back though... > :) > > Yes Valdis you can give me a hard time on IRC when I next show up :) > > Aruna ( Ravali, please heed Valdis's advice that is the best way. I just > pointed you in the right direction with a bit more code to play with but > try to do your own digging first through the kernel and good luck ! ) >
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