linux-kernel - Re: [PATCH/RFC] mm: add and use batched version of __tlb_remove

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Message-ID: <f955a1a8-eaac-0ab7-a48c-6237b3511312@virtuozzo.com>
Date:   Sat, 18 Dec 2021 16:38:59 +0300
From:   Nikita Yushchenko <nikita.yushchenko@...tuozzo.com>
To:     Sam Ravnborg <sam@...nborg.org>
Cc:     Will Deacon <will@...nel.org>,
        "Aneesh Kumar K.V" <aneesh.kumar@...ux.ibm.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Nick Piggin <npiggin@...il.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Christian Borntraeger <borntraeger@...ux.ibm.com>,
        "David S. Miller" <davem@...emloft.net>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Arnd Bergmann <arnd@...db.de>, x86@...nel.org,
        linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
        linux-mm@...ck.org, linuxppc-dev@...ts.ozlabs.org,
        linux-s390@...r.kernel.org, sparclinux@...r.kernel.org,
        kernel@...nvz.org
Subject: Re: [PATCH/RFC] mm: add and use batched version of
 __tlb_remove_table()

17.12.2021 21:39, Sam Ravnborg wrote:
> Hi Nikita,
> 
> How about adding the following to tlb.h:
> 
> #ifndef __tlb_remove_tables
> static void __tlb_remove_tables(...)
> {
> 	....
> }
> #endif
> 
> And then the few archs that want to override __tlb_remove_tables
> needs to do a
> #define __tlb_remove_tables __tlb_remove_tables

Hi Sam.

Thanks for you suggestion.

I think that what Peter suggested in the other reply is even better. I will follow that approach.

Nikita