From patchwork Thu Apr 30 20:38:35 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ira Weiny X-Patchwork-Id: 1280930 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 49CnPD6sw5z9sRY for ; Fri, 1 May 2020 06:42:08 +1000 (AEST) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=intel.com Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 49CnPD5vhzzDrHF for ; Fri, 1 May 2020 06:42:08 +1000 (AEST) X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=intel.com (client-ip=192.55.52.120; helo=mga04.intel.com; envelope-from=ira.weiny@intel.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=intel.com Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 49CnKT3pTGzDq7d for ; Fri, 1 May 2020 06:38:52 +1000 (AEST) IronPort-SDR: sqi1e1XnqjnEk7QHAyvLk/4UfO4SJba6+8xhYWN4XC8I6X7iD8zAScvzITCJQ5LfzaN0emwSfg 36zxs8eK5fHw== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Apr 2020 13:38:49 -0700 IronPort-SDR: I4KrUIKV1JIB236IcZ/nZ88R5GBVmHR6Cx62c+EO6isHRqV8HMXGZ8LGPtTewSc3X7sQE/xJP4 Vwm62Pd83kiw== X-IronPort-AV: E=Sophos;i="5.73,337,1583222400"; d="scan'208";a="248380175" Received: from iweiny-desk2.sc.intel.com (HELO localhost) ([10.3.52.147]) by fmsmga007-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Apr 2020 13:38:49 -0700 From: ira.weiny@intel.com To: linux-kernel@vger.kernel.org, Andrew Morton , Christian Koenig , Huang Rui Subject: [PATCH V1 00/10] Remove duplicated kmap code Date: Thu, 30 Apr 2020 13:38:35 -0700 Message-Id: <20200430203845.582900-1-ira.weiny@intel.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Zijlstra , Dave Hansen , dri-devel@lists.freedesktop.org, "James E.J. Bottomley" , Max Filippov , Paul Mackerras , "H. Peter Anvin" , sparclinux@vger.kernel.org, Ira Weiny , Thomas Gleixner , Helge Deller , x86@kernel.org, linux-csky@vger.kernel.org, Ingo Molnar , linux-snps-arc@lists.infradead.org, linux-xtensa@linux-xtensa.org, Borislav Petkov , Andy Lutomirski , Dan Williams , linux-arm-kernel@lists.infradead.org, Chris Zankel , Thomas Bogendoerfer , linux-parisc@vger.kernel.org, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, "David S. Miller" Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" From: Ira Weiny The kmap infrastructure has been copied almost verbatim to every architecture. This series consolidates obvious duplicated code by defining core functions which call into the architectures only when needed. Some of the k[un]map_atomic() implementations have some similarities but the similarities were not sufficient to warrant further changes. In addition we remove a duplicate implementation of kmap() in DRM. Testing was done by 0day to cover all the architectures I can't readily build/test. --- Changes from V0: rebase to 5.7-rc4 Define kmap_flush_tlb() and make kmap() truely arch independent. Redefine the k[un]map_atomic_* code to call into the architectures for high mem pages Ensure all architectures define kmap_prot, use it appropriately, and define kmap_atomic_prot() Remove drm implementation of kmap_atomic() Ira Weiny (10): arch/kmap: Remove BUG_ON() arch/xtensa: Move kmap build bug out of the way arch/kmap: Remove redundant arch specific kmaps arch/kunmap: Remove duplicate kunmap implementations arch/kmap_atomic: Consolidate duplicate code arch/kunmap_atomic: Consolidate duplicate code arch/kmap: Ensure kmap_prot visibility arch/kmap: Don't hard code kmap_prot values arch/kmap: Define kmap_atomic_prot() for all arch's drm: Remove drm specific kmap_atomic code arch/arc/include/asm/highmem.h | 16 +------ arch/arc/mm/highmem.c | 28 +++---------- arch/arm/include/asm/highmem.h | 9 +--- arch/arm/mm/highmem.c | 35 +++------------- arch/csky/include/asm/highmem.h | 11 ++--- arch/csky/mm/highmem.c | 43 +++++-------------- arch/microblaze/include/asm/highmem.h | 29 ++----------- arch/microblaze/mm/highmem.c | 16 ++----- arch/microblaze/mm/init.c | 3 -- arch/mips/include/asm/highmem.h | 11 ++--- arch/mips/mm/cache.c | 6 +-- arch/mips/mm/highmem.c | 49 ++++------------------ arch/nds32/include/asm/highmem.h | 9 +--- arch/nds32/mm/highmem.c | 39 +++-------------- arch/parisc/include/asm/cacheflush.h | 4 +- arch/powerpc/include/asm/highmem.h | 30 ++------------ arch/powerpc/mm/highmem.c | 21 ++-------- arch/powerpc/mm/mem.c | 3 -- arch/sparc/include/asm/highmem.h | 23 +--------- arch/sparc/mm/highmem.c | 18 +++----- arch/x86/include/asm/highmem.h | 11 +---- arch/x86/mm/highmem_32.c | 50 ++-------------------- arch/xtensa/include/asm/highmem.h | 28 +------------ arch/xtensa/mm/highmem.c | 23 +++++----- drivers/gpu/drm/ttm/ttm_bo_util.c | 56 ++----------------------- drivers/gpu/drm/vmwgfx/vmwgfx_blit.c | 16 +++---- include/drm/ttm/ttm_bo_api.h | 4 -- include/linux/highmem.h | 60 +++++++++++++++++++++++++-- 28 files changed, 159 insertions(+), 492 deletions(-)