linux-kernel - Re: [PATCH 0 of 8] x86/smp function calls: convert x86 tlb flushes to use function calls

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Date:	Tue, 05 Aug 2008 20:33:24 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Andi Kleen <andi@...stfloor.org>
CC:	Ingo Molnar <mingo@...e.hu>, LKML <linux-kernel@...r.kernel.org>,
	x86@...nel.org, Nick Piggin <nickpiggin@...oo.com.au>,
	Jens Axboe <jens.axboe@...cle.com>
Subject: Re: [PATCH 0 of 8] x86/smp function calls: convert x86 tlb flushes
 to use function calls

Andi Kleen wrote:
> Jeremy Fitzhardinge <jeremy@...p.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

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