From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4951CC10F00 for ; Tue, 19 Feb 2019 12:48:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 229C82146E for ; Tue, 19 Feb 2019 12:48:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728729AbfBSMsE (ORCPT ); Tue, 19 Feb 2019 07:48:04 -0500 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70]:44922 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726149AbfBSMsD (ORCPT ); Tue, 19 Feb 2019 07:48:03 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 240A1EBD; Tue, 19 Feb 2019 04:48:03 -0800 (PST) Received: from fuggles.cambridge.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.72.51.249]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 0F6D03F720; Tue, 19 Feb 2019 04:48:00 -0800 (PST) Date: Tue, 19 Feb 2019 12:47:58 +0000 From: Will Deacon To: Peter Zijlstra Cc: aneesh.kumar@linux.vnet.ibm.com, akpm@linux-foundation.org, npiggin@gmail.com, linux-arch@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux@armlinux.org.uk, heiko.carstens@de.ibm.com, riel@surriel.com, Linus Torvalds , Martin Schwidefsky Subject: Re: [PATCH v6 13/18] asm-generic/tlb: Introduce HAVE_MMU_GATHER_NO_GATHER Message-ID: <20190219124758.GF8501@fuggles.cambridge.arm.com> References: <20190219103148.192029670@infradead.org> <20190219103233.633310832@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190219103233.633310832@infradead.org> User-Agent: Mutt/1.11.1+86 (6f28e57d73f2) () Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Feb 19, 2019 at 11:32:01AM +0100, Peter Zijlstra wrote: > Add the Kconfig option HAVE_MMU_GATHER_NO_GATHER to the generic > mmu_gather code. If the option is set the mmu_gather will not > track individual pages for delayed page free anymore. A platform > that enables the option needs to provide its own implementation > of the __tlb_remove_page_size function to free pages. > > Cc: npiggin@gmail.com > Cc: heiko.carstens@de.ibm.com > Cc: will.deacon@arm.com > Cc: aneesh.kumar@linux.vnet.ibm.com > Cc: akpm@linux-foundation.org > Cc: Linus Torvalds > Cc: linux@armlinux.org.uk > Signed-off-by: Martin Schwidefsky > Signed-off-by: Peter Zijlstra (Intel) > Link: http://lkml.kernel.org/r/20180918125151.31744-2-schwidefsky@de.ibm.com > --- > arch/Kconfig | 3 + > include/asm-generic/tlb.h | 9 +++ > mm/mmu_gather.c | 107 +++++++++++++++++++++++++--------------------- > 3 files changed, 70 insertions(+), 49 deletions(-) Acked-by: Will Deacon Will