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[217.140.101.70]) by mx.google.com with ESMTP id gv8si540995ejb.278.2019.02.19.04.48.05 for ; Tue, 19 Feb 2019 04:48:06 -0800 (PST) Received-SPF: pass (google.com: domain of will.deacon@arm.com designates 217.140.101.70 as permitted sender) client-ip=217.140.101.70; Authentication-Results: mx.google.com; spf=pass (google.com: domain of will.deacon@arm.com designates 217.140.101.70 as permitted sender) smtp.mailfrom=will.deacon@arm.com 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) () X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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