Simple system stats.

[Greg KH]

On Sat, Nov 02, 2019 at 02:05:19PM +0100, Andre Schmidt wrote:
> On Sat, 2 Nov 2019 13:07:00 +0100
> Greg KH <greg at kroah.com> wrote:
> 
> > On Sat, Nov 02, 2019 at 12:51:05PM +0100, Andre Schmidt wrote:
> > > Hello kernel space,
> > > 
> > > user space webmonkey here, tinkering on my home desktop setup and spelunking way too many rabbit holes... damn you source code! ;P
> > > 
> > > The other day i got frustrated with re-implementing parsing and calculation of /proc/stat and /proc/meminfo for my visual user interface experiments (in various languages), so i "created"* a kernel module that helps me with that (https://github.com/oskude/proc_topstat).
> > > 
> > > But i could not get swap info in the kernel module, cause - i guess - it's not exported?
> > > So i wonder, would/could upstream EXPORT_SYMBOL(si_swapinfo)?
> > > If yes/maybe, where/how should i propose such change?
> >
> > Symbols and functions are only exported if an in-kernel-tree module
> > needs it.  Sorry.
> >
> > What's wrong with parsing the existing exports of this value as-is?
> 
> do you mean i can get swap usage info in a kernel module without si_swapinfo?

Not that I know of, no.

> (as seen here https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/fs/proc/meminfo.c#n44)
> 
> or do you mean what is wrong with /proc/meminfo?

Yes, what is wrong with that?

thanks,

greg k-h