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spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=PWwwwDQOmkB8wUkDFU7l41wiEiV0vUJS1YNDwKFMUo0=; b=DV79+oeincNTvr YfHYvLad7ELHHfNqX/zLzHefp/8zEqZ4j1Q4eXHf4xWqea6975h5X8Udl+M7HZYDd8mcn2SAf8ZU3 FYiBn8RkeHp4LjirsNQyNSCsKHAkfwmraSYtubcvYJdJLGhhL/fXMr9jU4Qag7CeTg1gC4q2nqgiW VkwZ7xVktjvTS2RZwFirqveTSIyCitdVvCbwTz0l6h+SILBEI/dCg7YRcikIuCjnpV51k1Fy120do clHM8536bNlSPUeR2XTMhp2FYt6zr5k09SKUAEokiw2YI7EhMuKpSxru3gypdRWF5SQL9OgbsJZLE xTNMgQI4M+fVYJ56W/cQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1m61ET-00EFSe-1W; 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Wed, 21 Jul 2021 01:41:00 +0000 (UTC) Received: from T590 (ovpn-12-206.pek2.redhat.com [10.72.12.206]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 65F035D9DC; Wed, 21 Jul 2021 01:40:53 +0000 (UTC) Date: Wed, 21 Jul 2021 09:40:48 +0800 From: Ming Lei To: John Garry Cc: Robin Murphy , iommu@lists.linux-foundation.org, Will Deacon , linux-arm-kernel@lists.infradead.org, linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [bug report] iommu_dma_unmap_sg() is very slow then running IO from remote numa node Message-ID: References: <23e7956b-f3b5-b585-3c18-724165994051@arm.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210720_184105_255888_09A2E523 X-CRM114-Status: GOOD ( 14.91 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Jul 19, 2021 at 05:14:28PM +0100, John Garry wrote: > On 09/07/2021 15:24, Ming Lei wrote: > > > associated compromises. > > Follows the log of 'perf report' > > > > 1) good(run fio from cpus in the nvme's numa node) > > Hi Ming, > > If you're still interested in this issue, as an experiment only you can try > my rebased patches here: > > https://github.com/hisilicon/kernel-dev/commits/private-topic-smmu-5.14-cmdq-4 > > I think that you should see a significant performance boost. There is build issue, please check your tree: MODPOST vmlinux.symvers MODINFO modules.builtin.modinfo GEN modules.builtin LD .tmp_vmlinux.btf ld: Unexpected GOT/PLT entries detected! ld: Unexpected run-time procedure linkages detected! ld: drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.o: in function `smmu_test_store': /root/git/linux/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c:3892: undefined reference to `smmu_test_core' BTF .btf.vmlinux.bin.o pahole: .tmp_vmlinux.btf: No such file or directory LD .tmp_vmlinux.kallsyms1 .btf.vmlinux.bin.o: file not recognized: file format not recognized make: *** [Makefile:1177: vmlinux] Error 1 Thanks, Ming _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel