lkml.org 
[lkml]   [2009]   [Apr]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC][PATCH] proc: export more page flags in /proc/kpageflags
> That's pretty good separations. I guess it would be convenient to make the
> extra kernel flags available under CONFIG_DEBUG_KERNEL?

Yes.

BTW an alternative would be just someone implementing a suitable
command/macro in crash(1) and tell the kernel hackers to run that on
/proc/kcore. That would have the advantage to not require code.

> > > > > > - PG_compound
> >
> > I would combine these three into a pseudo "large page" flag.
>
> Very neat idea! Patch updated accordingly.
>
> However - one pity I observed:
>
> # ./page-areas 0x008000
> offset len KB
> 3088 4 16KB
>
> We can no longer tell if the above line means one 4-page hugepage, or two
> 2-page hugepages... Adding PG_COMPOUND_TAIL into the CONFIG_DEBUG_KERNEL block

There's only a single size (2 or 4MB), at worst two.

> >
> > PG_poison is also useful to export. But since it depends on my
> > patchkit I will pull a patch for that into the HWPOISON series.
>
> That's not a problem - since the PG_poison line is be protected by
> #ifdef CONFIG_MEMORY_FAILURE :-)

Good point. I added a patch to only add it to my pile,
but I can drop that again.

-Andi


\
 
 \ /
  Last update: 2009-04-15 15:59    [W:0.661 / U:0.280 seconds]
©2003-2014 Jasper Spaans. Advertise on this site