Re: [PATCH v3 0/2] Ajust lockdep static allocations for sparc

From	Peter Zijlstra <peterz@infradead.org>
Newsgroups	linux.kernel
Subject	Re: [PATCH v3 0/2] Ajust lockdep static allocations for sparc
Date	2016-11-29 13:30 +0100
Message-ID	<sIPHP-8re-9@gated-at.bofh.it> (permalink)
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On Tue, Nov 29, 2016 at 12:52:04PM +0100, Geert Uytterhoeven wrote:
> > Nah, users don't need more senseless options. This is really only useful
> > for dinky platforms or platforms with limited static image size (like
> > sparc64).
> >
> > If you make this user selectable, someone will do, and then an endless
> > stream of table not big enough warnings will be posted.
> >
> > Also, its only 4MB (IIRC), so who cares.
> 
> I care :-)
> 
> Not because of platforms with not limited memory, but because of platforms
> with boot loaders that have silly kernel size limitations, and start
> scribbling over the DTB or even theirselves when copying a large kernel image.

Right, that's the weird platforms clause above, and those can select the
option.

> BTW, is there any particular reason these huge arrays are in BSS, and not
> allocated dynamically? That would solve my problems as well...

Is there a memory allocator available before _any_ locks are used, and
that itself also doesn't use locks?

Thread

Re: [PATCH v3 0/2] Ajust lockdep static allocations for sparc Geert Uytterhoeven <geert@linux-m68k.org> - 2016-11-29 12:20 +0100
  Re: [PATCH v3 0/2] Ajust lockdep static allocations for sparc Peter Zijlstra <peterz@infradead.org> - 2016-11-29 12:50 +0100
    Re: [PATCH v3 0/2] Ajust lockdep static allocations for sparc Geert Uytterhoeven <geert@linux-m68k.org> - 2016-11-29 13:00 +0100
      Re: [PATCH v3 0/2] Ajust lockdep static allocations for sparc Peter Zijlstra <peterz@infradead.org> - 2016-11-29 13:30 +0100
        Re: [PATCH v3 0/2] Ajust lockdep static allocations for sparc Peter Zijlstra <peterz@infradead.org> - 2016-11-29 13:40 +0100
        Re: [PATCH v3 0/2] Ajust lockdep static allocations for sparc Geert Uytterhoeven <geert@linux-m68k.org> - 2016-11-29 14:30 +0100
          Re: [PATCH v3 0/2] Ajust lockdep static allocations for sparc Peter Zijlstra <peterz@infradead.org> - 2016-11-29 14:40 +0100
            Re: [PATCH v3 0/2] Ajust lockdep static allocations for sparc Geert Uytterhoeven <geert@linux-m68k.org> - 2016-11-29 14:40 +0100
              Re: [PATCH v3 0/2] Ajust lockdep static allocations for sparc Peter Zijlstra <peterz@infradead.org> - 2016-11-29 15:00 +0100

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