Re: [2.6.18-rc7-mm1] slow boot

From: Tilman Schmidt
Date: Thu Sep 28 2006 - 12:59:06 EST

On 24.09.2006 23:53, Andrew Morton wrote:
> Do you have the time to go through the
> process?

Phew, it's done. And the winner is:

i386: Do stacktracer conversion too

Following x86-64 patches. Reuses code from them in fact.

Convert the standard backtracer to do all output using
callbacks. Use the x86-64 stack tracer implementation
that uses these callbacks to implement the stacktrace interface.

This allows to use the new dwarf2 unwinder for stacktrace
and get better backtraces.

Cc: mingo@xxxxxxx

Signed-off-by: Andi Kleen <ak@xxxxxxx>

Backing out just this patch from 2.6.18-mm1 (and resolving conflicts
manually the obvious way) gets the boot time back to normal (ie. as
fast as 2.6.18 mainline) on my
Linux gx110 2.6.18-mm1-noinitrd #2 PREEMPT Thu Sep 28 18:48:32 CEST 2006 i686 i686 i386 GNU/Linux


Tilman Schmidt E-Mail: tilman@xxxxxxx
Bonn, Germany
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