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Date:   Wed, 24 Oct 2018 07:53:19 +0200
From:   Ingo Molnar <>
To:     Rik van Riel <>
        Linus Torvalds <>,
        Thomas Gleixner <>,
        Peter Zijlstra <>,
        Borislav Petkov <>
Subject: Re: [PATCH 0/7] x86/mm/tlb: make lazy TLB mode even lazier

* Rik van Riel <> wrote:

> The big thing remaining is the reference count overhead of
> the lazy TLB mm_struct, but getting rid of that is rather a
> lot of code for a small performance gain. Not quite what
> Linus asked for :)

BTW., what would be the plan to improve scalability there,
is it even possible?

Also, it would be nice to integrate some of those workloads
into a simple 'perf bench mm' or 'perf bench tlb' subcommand,
see tools/perf/bench/ on how to add benchmarking modules.



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