From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg1-f198.google.com (mail-pg1-f198.google.com [209.85.215.198]) by kanga.kvack.org (Postfix) with ESMTP id 232586B46A5 for ; Tue, 27 Nov 2018 02:57:20 -0500 (EST) Received: by mail-pg1-f198.google.com with SMTP id s27so9533835pgm.4 for ; Mon, 26 Nov 2018 23:57:20 -0800 (PST) Received: from ozlabs.org (ozlabs.org. [2401:3900:2:1::2]) by mx.google.com with ESMTPS id w16-v6si3158029plk.317.2018.11.26.23.57.18 for (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Mon, 26 Nov 2018 23:57:18 -0800 (PST) From: Michael Ellerman Subject: Re: [PATCH V2] mm: Replace all open encodings for NUMA_NO_NODE In-Reply-To: <1543235202-9075-1-git-send-email-anshuman.khandual@arm.com> References: <1543235202-9075-1-git-send-email-anshuman.khandual@arm.com> Date: Tue, 27 Nov 2018 18:57:11 +1100 Message-ID: <87mupvgdgo.fsf@concordia.ellerman.id.au> MIME-Version: 1.0 Content-Type: text/plain Sender: owner-linux-mm@kvack.org List-ID: To: Anshuman Khandual , linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: ocfs2-devel@oss.oracle.com, linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org, netdev@vger.kernel.org, intel-wired-lan@lists.osuosl.org, linux-media@vger.kernel.org, iommu@lists.linux-foundation.org, linux-rdma@vger.kernel.org, dmaengine@vger.kernel.org, linux-block@vger.kernel.org, sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-ia64@vger.kernel.org, linux-alpha@vger.kernel.org, akpm@linux-foundation.org, jiangqi903@gmail.com, hverkuil@xs4all.nl, vkoul@kernel.org Anshuman Khandual writes: > At present there are multiple places where invalid node number is encoded > as -1. Even though implicitly understood it is always better to have macros > in there. Replace these open encodings for an invalid node number with the > global macro NUMA_NO_NODE. This helps remove NUMA related assumptions like > 'invalid node' from various places redirecting them to a common definition. > > Signed-off-by: Anshuman Khandual > --- > Changes in V2: > > - Added inclusion of 'numa.h' header at various places per Andrew > - Updated 'dev_to_node' to use NUMA_NO_NODE instead per Vinod > > Changes in V1: (https://lkml.org/lkml/2018/11/23/485) > > - Dropped OCFS2 changes per Joseph > - Dropped media/video drivers changes per Hans > > RFC - https://patchwork.kernel.org/patch/10678035/ > > Build tested this with multiple cross compiler options like alpha, sparc, > arm64, x86, powerpc, powerpc64le etc with their default config which might > not have compiled tested all driver related changes. I will appreciate > folks giving this a test in their respective build environment. > > All these places for replacement were found by running the following grep > patterns on the entire kernel code. Please let me know if this might have > missed some instances. This might also have replaced some false positives. > I will appreciate suggestions, inputs and review. > > 1. git grep "nid == -1" > 2. git grep "node == -1" > 3. git grep "nid = -1" > 4. git grep "node = -1" > > arch/alpha/include/asm/topology.h | 3 ++- > arch/ia64/kernel/numa.c | 2 +- > arch/ia64/mm/discontig.c | 6 +++--- > arch/ia64/sn/kernel/io_common.c | 3 ++- > arch/powerpc/include/asm/pci-bridge.h | 3 ++- > arch/powerpc/kernel/paca.c | 3 ++- > arch/powerpc/kernel/pci-common.c | 3 ++- > arch/powerpc/mm/numa.c | 14 +++++++------- > arch/powerpc/platforms/powernv/memtrace.c | 5 +++-- These powerpc changes all look fine. Acked-by: Michael Ellerman cheers