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Date: Tue, 05 Aug 2008 20:33:24 -0700
From: Jeremy Fitzhardinge <jeremy@goop.org>
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To: Andi Kleen <andi@firstfloor.org>
CC: Ingo Molnar <mingo@elte.hu>, LKML <linux-kernel@vger.kernel.org>,
       x86@kernel.org, Nick Piggin <nickpiggin@yahoo.com.au>,
       Jens Axboe <jens.axboe@oracle.com>
Subject: Re: [PATCH 0 of 8] x86/smp function calls: convert x86 tlb flushes
 to use function calls
References: <patchbomb.1217636085@localhost> <87k5eu6d4f.fsf@basil.nowhere.org>
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Andi Kleen wrote:
> Jeremy Fitzhardinge <jeremy@goop.org> writes:
>
>   
>> 1. use smp_call_function_mask to implement cross-cpu TLB flushes
>>     
>
>
> Do you have any measurements comparing performance of the old and 
> the new call? TLB flush is quite time critical so we should be very
> careful here.

No.  What benchmark would you suggest?

    J