Re: [PATCH 0/2] ia64: possible module unwind table optimisation

From: Tony Luck
Date: Wed Sep 15 2010 - 13:29:10 EST


On Wed, Sep 15, 2010 at 5:48 AM, Phil Carmody
<ext-phil.2.carmody@xxxxxxxxx> wrote:
>>   for (table = unw.tables; table; table = table->next)
>>
>> before we find the right table to look?
>
> Yes, that's the one. Sorry I wasn't more explicit.

My usual workload (building new Linux kernels - what else :-) doesn't
seem to generate
any unwind requests. I reached the loop just 58 times while booting,
and only did 23
steps past the first item [didn't track a histogram, so I don't know
whether that was a
single 23 step lookup, or 23 one-step ones]. Building the kernel
(make -j32) didn't add
to either count.

Workload ideas?

-Tony
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