[PATCH] x86-64: Speed up dwarf2 unwinder

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This changes the dwarf2 unwinder to do a binary search for CIEs
instead of a linear work. The linker is unfortunately not
able to build a proper lookup table at link time, instead it creates
one at runtime as soon as the bootmem allocator is usable (so you'll continue
using the linear lookup for the first [hopefully] few calls).
The code should be ready to utilize a build-time created table once
a fixed linker becomes available.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@suse.de>

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Jan Beulich 2006-10-21 18:37:01 +02:00 • committed by Andi Kleen

parent cdfce1f571

commit 690a973f48

5 changed files with 299 additions and 39 deletions

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include/linux/unwind.h

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