[Linux-users] Kernel Stat Question [OFFTOPIC]

[Sundara Raman Rajagopalan]

Hi,

   I am doing a series of projects in the linux kernel as an independent
  study ( Interested? please see www.geocities.com/happysundar), and I
  am stuck with a problem.
  
   The aim is to write a system call that will find the number of page faults
  (major page faults, not minor); I find that the information is stored in the
  kernel_stat structure in file linux/include/linux/kernel_stat.h, and the
  variables are pgpgin and pgpgout ( At least, I *think* so.. if there is
  any other kernel variable that keeps track of the system page faults, do 
  let me know).

   As might be expected, the /proc vfs also uses the same data for kstat;
 however, when displaying the data, the values pgpgin and pgpgout are
 *divided by 2!* and I can't figure out why the heck it is done!. See the
  snippet of code from file fs/proc/proc_misc.c: 

   kstat.pgpgin >> 1,
   kstat.pgpgout >> 1
  
    I have posted the question in comp.os.linux.development.system, but no
 response so far.

    It would be nice if some one could answer this question.

Thanks!
-- 
Sundara Raman Rajagopalan                  .-.    .-. .-..-. .-..-. .-..-.
M.S Comp Systems Engineering               | |__  | | | .` | | || |  >  <
Northeastern University                    `----' `-' `-'`-' `----' '-'`-`
Tel: +001 617 515 2092                      "The only difference between
www.coe.neu.edu/~sundar                     Linux and *NIX is the size of
                                            the ego of the person using it"



Quoting Marc Reichman <marcr@ccs.neu.edu>:

> david has fixed the /arch problem on the linux box (darkside for now). i
> propose
> we have a small discussion at our next crew or linux meeting to discuss how
> we're going to sort/manage the directories under arch. i'll save my ideas
> for the meeting. so as for now, please don't install any software under it.
> 
> -- 
> -marc
> 
> 
> _______________________________________________
> Linux-users mailing list
> Linux-users@lists.ccs.neu.edu
> https://lists.ccs.neu.edu/bin/listinfo/linux-users
>