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Message-ID: <87k5eu6d4f.fsf@basil.nowhere.org>
Date: Wed, 06 Aug 2008 05:22:56 +0200
From: Andi Kleen <andi@...stfloor.org>
To: Jeremy Fitzhardinge <jeremy@...p.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
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.
-Andi
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