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: 11521489 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 59BAA13B2 for ; Thu, 30 Apr 2020 20:39:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4AB1520870 for ; Thu, 30 Apr 2020 20:39:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727903AbgD3UjC (ORCPT ); Thu, 30 Apr 2020 16:39:02 -0400 Received: from mga03.intel.com ([134.134.136.65]:22078 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727890AbgD3UjB (ORCPT ); Thu, 30 Apr 2020 16:39:01 -0400 IronPort-SDR: ZODs9olETWZxq6vIHJIICUyOFs8gHM0Qs2WVKqA6Ct8Lu1+RnD0suwTdffaEOJZIPfXPlRHkQ3 yZzIR1ejDQSA== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by orsmga103.jf.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 Cc: Ira Weiny , Thomas Bogendoerfer , "James E.J. Bottomley" , Helge Deller , Benjamin Herrenschmidt , Paul Mackerras , "David S. Miller" , Thomas Gleixner , Ingo Molnar , Borislav Petkov , x86@kernel.org, "H. Peter Anvin" , Dave Hansen , Andy Lutomirski , Peter Zijlstra , Chris Zankel , Max Filippov , Dan Williams , linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org, linux-xtensa@linux-xtensa.org, dri-devel@lists.freedesktop.org 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 Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org 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(-)