Re: [gentoo-amd64] Re: Kernel Config for /proc/self/smaps

[Drake Donahue]

On Sat, 2009-09-19 at 21:32 +0000, Duncan wrote:
> P.V.Anthony posted on Mon, 14 Sep 2009 01:54:53 +0800 as excerpted:
>
> > Currently configuring kernel version 2.6.26 using "make menuconfig".
> >
> > Went to "filesystems" and then to "pseudo filesystems". The "proc" has
> > already been activated. On this system, I cannot even de-activate the
> > "proc". I did that for testing.
> >
> > Under "proc" there is "/proc/kcore support". That is also activated.
> >
> > Tried reading the help for the /proc/kcore but nothing there.
> >
> > I can manually set "CONFIG_PROC_PAGE_MONITOR=y" in the ".config" file.
> >
> > I would really like to learn how to set this using "make menuconfig".
> > Please bear with me and guide me on how to set
> > "CONFIG_PROC_PAGE_MONITOR=y" using "make menuconfig".
>
> [I've been offline for a week due to using bad memory while trying to
> flash a BIOS.  Naturally it crashed, and I couldn't boot my main
> machine.  I ended up ordering a pre-flashed BIOS chip from two states a
> way... and waiting the few days for it to ship.  I feel like I'm just
> back from the dead! =:^)  ]
>
> Hmm... perhaps it's elsewhere in the 2.6.26 kernel config.  I'm now
> running 2.6.31, and will be starting on the 2.6.32 rcs in a week or two...
>
> It's also possible it's turned off and not even available to you due to
> some other dependency.  I'd try tracing it if I hadn't just fallen a week
> behind, just to see.  You can grep "PROC__PAGE_MONITOR" in the kernel
> sources and see what comes up if you want.  That's what I'd do, tho
> having done stuff like that before I might be better equipped to filter
> out the uninteresting entries.  But you gotta start somewhere. =:^)

In menuconfig / is a shortcut to a find utility into which entering
config_proc_page_monitor takes one to a help page with the following
info:

Symbol: PROC_PAGE_MONITOR [=y]
Prompt: Enable /proc page monitoring 
   Defined at fs/proc/Kconfig:61 
   Depends on: PROC_FS && MMU && EMBEDDED 
   Location: 
     -> File systems> 
       -> Pseudo filesystems> 
         -> /proc file system support (PROC_FS [=y]