From patchwork Tue Jun 29 02:42:49 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Morton X-Patchwork-Id: 12349241 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 56282C11F65 for ; Tue, 29 Jun 2021 02:42:52 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 0BC6361D11 for ; Tue, 29 Jun 2021 02:42:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0BC6361D11 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 647118D012C; Mon, 28 Jun 2021 22:42:51 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 5F7178D00F0; Mon, 28 Jun 2021 22:42:51 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 4BE718D012C; Mon, 28 Jun 2021 22:42:51 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0241.hostedemail.com [216.40.44.241]) by kanga.kvack.org (Postfix) with ESMTP id 214FD8D00F0 for ; Mon, 28 Jun 2021 22:42:51 -0400 (EDT) Received: from smtpin11.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 23AF220309 for ; Tue, 29 Jun 2021 02:42:51 +0000 (UTC) X-FDA: 78305213742.11.936C0FD Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf14.hostedemail.com (Postfix) with ESMTP id C3A2DC0201F7 for ; Tue, 29 Jun 2021 02:42:50 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id ACA3B61D12; Tue, 29 Jun 2021 02:42:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1624934570; bh=oGYw9I41IE5KXnuBvXbC8tL7SjRlMA2sFpECXdpgLGo=; h=Date:From:To:Subject:In-Reply-To:From; b=nTDtrWQA/sGLtjy1TRzdrmKD06FTmkP4ugQ1SUUvxtfNGjKAKM/tMj+Aoqw43xpUd buCCX+Eco4KV34v9DVPRgxu5WtWqfh4dJ/hXuKwtzcyKTRlfdiVRMWfuKJ+/z1L5QN B+RuZ2MysVzQYpMkJENpao/vOxtAVXC0gQFOPdqE= Date: Mon, 28 Jun 2021 19:42:49 -0700 From: Andrew Morton To: akpm@linux-foundation.org, arnd@arndb.de, corbet@lwn.net, geert@linux-m68k.org, ink@jurassic.park.msu.ru, linux-mm@kvack.org, mattst88@gmail.com, mm-commits@vger.kernel.org, rppt@linux.ibm.com, rth@twiddle.net, torvalds@linux-foundation.org, vgupta@synopsys.com Subject: [patch 183/192] m68k: remove support for DISCONTIGMEM Message-ID: <20210629024249.xCbpSEhXV%akpm@linux-foundation.org> In-Reply-To: <20210628193256.008961950a714730751c1423@linux-foundation.org> User-Agent: s-nail v14.8.16 X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: C3A2DC0201F7 X-Stat-Signature: 5akmbsc6kauc8msqtw1duym3wyype7ho Authentication-Results: imf14.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b=nTDtrWQA; dmarc=none; spf=pass (imf14.hostedemail.com: domain of akpm@linux-foundation.org designates 198.145.29.99 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org X-HE-Tag: 1624934570-364366 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: From: Mike Rapoport Subject: m68k: remove support for DISCONTIGMEM DISCONTIGMEM was replaced by FLATMEM with freeing of the unused memory map in v5.11. Remove the support for DISCONTIGMEM entirely. Link: https://lkml.kernel.org/r/20210608091316.3622-5-rppt@kernel.org Signed-off-by: Mike Rapoport Reviewed-by: Geert Uytterhoeven Acked-by: Geert Uytterhoeven Acked-by: Arnd Bergmann Cc: Ivan Kokshaysky Cc: Jonathan Corbet Cc: Matt Turner Cc: Richard Henderson Cc: Vineet Gupta Signed-off-by: Andrew Morton --- arch/m68k/Kconfig.cpu | 10 -------- arch/m68k/include/asm/mmzone.h | 10 -------- arch/m68k/include/asm/page.h | 2 - arch/m68k/include/asm/page_mm.h | 35 ------------------------------ arch/m68k/mm/init.c | 20 ----------------- 5 files changed, 1 insertion(+), 76 deletions(-) --- a/arch/m68k/include/asm/mmzone.h +++ /dev/null @@ -1,10 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _ASM_M68K_MMZONE_H_ -#define _ASM_M68K_MMZONE_H_ - -extern pg_data_t pg_data_map[]; - -#define NODE_DATA(nid) (&pg_data_map[nid]) -#define NODE_MEM_MAP(nid) (NODE_DATA(nid)->node_mem_map) - -#endif /* _ASM_M68K_MMZONE_H_ */ --- a/arch/m68k/include/asm/page.h~m68k-remove-support-for-discontigmem +++ a/arch/m68k/include/asm/page.h @@ -62,7 +62,7 @@ extern unsigned long _ramend; #include #endif -#if !defined(CONFIG_MMU) || defined(CONFIG_DISCONTIGMEM) +#ifndef CONFIG_MMU #define __phys_to_pfn(paddr) ((unsigned long)((paddr) >> PAGE_SHIFT)) #define __pfn_to_phys(pfn) PFN_PHYS(pfn) #endif --- a/arch/m68k/include/asm/page_mm.h~m68k-remove-support-for-discontigmem +++ a/arch/m68k/include/asm/page_mm.h @@ -126,26 +126,6 @@ static inline void *__va(unsigned long x extern int m68k_virt_to_node_shift; -#ifndef CONFIG_DISCONTIGMEM -#define __virt_to_node(addr) (&pg_data_map[0]) -#else -extern struct pglist_data *pg_data_table[]; - -static inline __attribute_const__ int __virt_to_node_shift(void) -{ - int shift; - - asm ( - "1: moveq #0,%0\n" - m68k_fixup(%c1, 1b) - : "=d" (shift) - : "i" (m68k_fixup_vnode_shift)); - return shift; -} - -#define __virt_to_node(addr) (pg_data_table[(unsigned long)(addr) >> __virt_to_node_shift()]) -#endif - #define virt_to_page(addr) ({ \ pfn_to_page(virt_to_pfn(addr)); \ }) @@ -153,23 +133,8 @@ static inline __attribute_const__ int __ pfn_to_virt(page_to_pfn(page)); \ }) -#ifdef CONFIG_DISCONTIGMEM -#define pfn_to_page(pfn) ({ \ - unsigned long __pfn = (pfn); \ - struct pglist_data *pgdat; \ - pgdat = __virt_to_node((unsigned long)pfn_to_virt(__pfn)); \ - pgdat->node_mem_map + (__pfn - pgdat->node_start_pfn); \ -}) -#define page_to_pfn(_page) ({ \ - const struct page *__p = (_page); \ - struct pglist_data *pgdat; \ - pgdat = &pg_data_map[page_to_nid(__p)]; \ - ((__p) - pgdat->node_mem_map) + pgdat->node_start_pfn; \ -}) -#else #define ARCH_PFN_OFFSET (m68k_memory[0].addr >> PAGE_SHIFT) #include -#endif #define virt_addr_valid(kaddr) ((unsigned long)(kaddr) >= PAGE_OFFSET && (unsigned long)(kaddr) < (unsigned long)high_memory) #define pfn_valid(pfn) virt_addr_valid(pfn_to_virt(pfn)) --- a/arch/m68k/Kconfig.cpu~m68k-remove-support-for-discontigmem +++ a/arch/m68k/Kconfig.cpu @@ -408,10 +408,6 @@ config SINGLE_MEMORY_CHUNK order" to save memory that could be wasted for unused memory map. Say N if not sure. -config ARCH_DISCONTIGMEM_ENABLE - depends on BROKEN - def_bool MMU && !SINGLE_MEMORY_CHUNK - config FORCE_MAX_ZONEORDER int "Maximum zone order" if ADVANCED depends on !SINGLE_MEMORY_CHUNK @@ -451,11 +447,6 @@ config M68K_L2_CACHE depends on MAC default y -config NODES_SHIFT - int - default "3" - depends on DISCONTIGMEM - config CPU_HAS_NO_BITFIELDS bool @@ -553,4 +544,3 @@ config CACHE_COPYBACK The ColdFire CPU cache is set into Copy-back mode. endchoice endif - --- a/arch/m68k/mm/init.c~m68k-remove-support-for-discontigmem +++ a/arch/m68k/mm/init.c @@ -44,28 +44,8 @@ EXPORT_SYMBOL(empty_zero_page); int m68k_virt_to_node_shift; -#ifdef CONFIG_DISCONTIGMEM -pg_data_t pg_data_map[MAX_NUMNODES]; -EXPORT_SYMBOL(pg_data_map); - -pg_data_t *pg_data_table[65]; -EXPORT_SYMBOL(pg_data_table); -#endif - void __init m68k_setup_node(int node) { -#ifdef CONFIG_DISCONTIGMEM - struct m68k_mem_info *info = m68k_memory + node; - int i, end; - - i = (unsigned long)phys_to_virt(info->addr) >> __virt_to_node_shift(); - end = (unsigned long)phys_to_virt(info->addr + info->size - 1) >> __virt_to_node_shift(); - for (; i <= end; i++) { - if (pg_data_table[i]) - pr_warn("overlap at %u for chunk %u\n", i, node); - pg_data_table[i] = pg_data_map + node; - } -#endif node_set_online(node); }