From patchwork Thu Jun 20 10:35:15 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Hildenbrand X-Patchwork-Id: 11006407 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 78BCE14BB for ; Thu, 20 Jun 2019 10:35:49 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 68FD926E96 for ; Thu, 20 Jun 2019 10:35:49 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5CC892844E; Thu, 20 Jun 2019 10:35:49 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9B20626E96 for ; Thu, 20 Jun 2019 10:35:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731401AbfFTKfs (ORCPT ); Thu, 20 Jun 2019 06:35:48 -0400 Received: from mx1.redhat.com ([209.132.183.28]:38164 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726211AbfFTKfr (ORCPT ); Thu, 20 Jun 2019 06:35:47 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 836851556B; Thu, 20 Jun 2019 10:35:41 +0000 (UTC) Received: from t460s.redhat.com (ovpn-117-88.ams2.redhat.com [10.36.117.88]) by smtp.corp.redhat.com (Postfix) with ESMTP id 3C9D560A97; Thu, 20 Jun 2019 10:35:35 +0000 (UTC) From: David Hildenbrand To: linux-kernel@vger.kernel.org Cc: Dan Williams , Andrew Morton , linuxppc-dev@lists.ozlabs.org, linux-acpi@vger.kernel.org, linux-mm@kvack.org, David Hildenbrand , Greg Kroah-Hartman , "Rafael J. Wysocki" , Vlastimil Babka , Michal Hocko , Mel Gorman , Wei Yang , Johannes Weiner , Arun KS , Pavel Tatashin , Oscar Salvador , Stephen Rothwell , Mike Rapoport , Baoquan He Subject: [PATCH v2 1/6] mm: Section numbers use the type "unsigned long" Date: Thu, 20 Jun 2019 12:35:15 +0200 Message-Id: <20190620103520.23481-2-david@redhat.com> In-Reply-To: <20190620103520.23481-1-david@redhat.com> References: <20190620103520.23481-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.29]); Thu, 20 Jun 2019 10:35:47 +0000 (UTC) Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP We are using a mixture of "int" and "unsigned long". Let's make this consistent by using "unsigned long" everywhere. We'll do the same with memory block ids next. While at it, turn the "unsigned long i" in removable_show() into an int - sections_per_block is an int. Cc: Greg Kroah-Hartman Cc: "Rafael J. Wysocki" Cc: Andrew Morton Cc: Vlastimil Babka Cc: Michal Hocko Cc: Dan Williams Cc: Mel Gorman Cc: Wei Yang Cc: Johannes Weiner Cc: Arun KS Cc: Pavel Tatashin Cc: Oscar Salvador Cc: Stephen Rothwell Cc: Mike Rapoport Cc: Baoquan He Signed-off-by: David Hildenbrand --- drivers/base/memory.c | 27 +++++++++++++-------------- include/linux/mmzone.h | 4 ++-- mm/sparse.c | 12 ++++++------ 3 files changed, 21 insertions(+), 22 deletions(-) diff --git a/drivers/base/memory.c b/drivers/base/memory.c index 826dd76f662e..5947b5a5686d 100644 --- a/drivers/base/memory.c +++ b/drivers/base/memory.c @@ -34,7 +34,7 @@ static DEFINE_MUTEX(mem_sysfs_mutex); static int sections_per_block; -static inline int base_memory_block_id(int section_nr) +static inline int base_memory_block_id(unsigned long section_nr) { return section_nr / sections_per_block; } @@ -131,9 +131,9 @@ static ssize_t phys_index_show(struct device *dev, static ssize_t removable_show(struct device *dev, struct device_attribute *attr, char *buf) { - unsigned long i, pfn; - int ret = 1; struct memory_block *mem = to_memory_block(dev); + unsigned long pfn; + int ret = 1, i; if (mem->state != MEM_ONLINE) goto out; @@ -691,15 +691,15 @@ static int init_memory_block(struct memory_block **memory, int block_id, return ret; } -static int add_memory_block(int base_section_nr) +static int add_memory_block(unsigned long base_section_nr) { + int ret, section_count = 0; struct memory_block *mem; - int i, ret, section_count = 0; + unsigned long nr; - for (i = base_section_nr; - i < base_section_nr + sections_per_block; - i++) - if (present_section_nr(i)) + for (nr = base_section_nr; nr < base_section_nr + sections_per_block; + nr++) + if (present_section_nr(nr)) section_count++; if (section_count == 0) @@ -822,10 +822,9 @@ static const struct attribute_group *memory_root_attr_groups[] = { */ int __init memory_dev_init(void) { - unsigned int i; int ret; int err; - unsigned long block_sz; + unsigned long block_sz, nr; ret = subsys_system_register(&memory_subsys, memory_root_attr_groups); if (ret) @@ -839,9 +838,9 @@ int __init memory_dev_init(void) * during boot and have been initialized */ mutex_lock(&mem_sysfs_mutex); - for (i = 0; i <= __highest_present_section_nr; - i += sections_per_block) { - err = add_memory_block(i); + for (nr = 0; nr <= __highest_present_section_nr; + nr += sections_per_block) { + err = add_memory_block(nr); if (!ret) ret = err; } diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 427b79c39b3c..83b6aae16f13 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -1220,7 +1220,7 @@ static inline struct mem_section *__nr_to_section(unsigned long nr) return NULL; return &mem_section[SECTION_NR_TO_ROOT(nr)][nr & SECTION_ROOT_MASK]; } -extern int __section_nr(struct mem_section* ms); +extern unsigned long __section_nr(struct mem_section *ms); extern unsigned long usemap_size(void); /* @@ -1292,7 +1292,7 @@ static inline struct mem_section *__pfn_to_section(unsigned long pfn) return __nr_to_section(pfn_to_section_nr(pfn)); } -extern int __highest_present_section_nr; +extern unsigned long __highest_present_section_nr; #ifndef CONFIG_HAVE_ARCH_PFN_VALID static inline int pfn_valid(unsigned long pfn) diff --git a/mm/sparse.c b/mm/sparse.c index 1552c855d62a..e8c57e039be8 100644 --- a/mm/sparse.c +++ b/mm/sparse.c @@ -102,7 +102,7 @@ static inline int sparse_index_init(unsigned long section_nr, int nid) #endif #ifdef CONFIG_SPARSEMEM_EXTREME -int __section_nr(struct mem_section* ms) +unsigned long __section_nr(struct mem_section *ms) { unsigned long root_nr; struct mem_section *root = NULL; @@ -121,9 +121,9 @@ int __section_nr(struct mem_section* ms) return (root_nr * SECTIONS_PER_ROOT) + (ms - root); } #else -int __section_nr(struct mem_section* ms) +unsigned long __section_nr(struct mem_section *ms) { - return (int)(ms - mem_section[0]); + return (unsigned long)(ms - mem_section[0]); } #endif @@ -178,10 +178,10 @@ void __meminit mminit_validate_memmodel_limits(unsigned long *start_pfn, * Keeping track of this gives us an easy way to break out of * those loops early. */ -int __highest_present_section_nr; +unsigned long __highest_present_section_nr; static void section_mark_present(struct mem_section *ms) { - int section_nr = __section_nr(ms); + unsigned long section_nr = __section_nr(ms); if (section_nr > __highest_present_section_nr) __highest_present_section_nr = section_nr; @@ -189,7 +189,7 @@ static void section_mark_present(struct mem_section *ms) ms->section_mem_map |= SECTION_MARKED_PRESENT; } -static inline int next_present_section_nr(int section_nr) +static inline unsigned long next_present_section_nr(unsigned long section_nr) { do { section_nr++; From patchwork Thu Jun 20 10:35:16 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Hildenbrand X-Patchwork-Id: 11006429 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id CE39B14BB for ; Thu, 20 Jun 2019 10:36:12 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C0A12285CC for ; Thu, 20 Jun 2019 10:36:12 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B4A96285EA; Thu, 20 Jun 2019 10:36:12 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5B2B8285CC for ; Thu, 20 Jun 2019 10:36:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731450AbfFTKfs (ORCPT ); Thu, 20 Jun 2019 06:35:48 -0400 Received: from mx1.redhat.com ([209.132.183.28]:38188 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731388AbfFTKfr (ORCPT ); Thu, 20 Jun 2019 06:35:47 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 074DF2E97C7; Thu, 20 Jun 2019 10:35:47 +0000 (UTC) Received: from t460s.redhat.com (ovpn-117-88.ams2.redhat.com [10.36.117.88]) by smtp.corp.redhat.com (Postfix) with ESMTP id D445160600; Thu, 20 Jun 2019 10:35:41 +0000 (UTC) From: David Hildenbrand To: linux-kernel@vger.kernel.org Cc: Dan Williams , Andrew Morton , linuxppc-dev@lists.ozlabs.org, linux-acpi@vger.kernel.org, linux-mm@kvack.org, David Hildenbrand , Greg Kroah-Hartman , "Rafael J. Wysocki" Subject: [PATCH v2 2/6] drivers/base/memory: Use "unsigned long" for block ids Date: Thu, 20 Jun 2019 12:35:16 +0200 Message-Id: <20190620103520.23481-3-david@redhat.com> In-Reply-To: <20190620103520.23481-1-david@redhat.com> References: <20190620103520.23481-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.29]); Thu, 20 Jun 2019 10:35:47 +0000 (UTC) Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Block ids are just shifted section numbers, so let's also use "unsigned long" for them, too. Cc: Greg Kroah-Hartman Cc: "Rafael J. Wysocki" Signed-off-by: David Hildenbrand --- drivers/base/memory.c | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) diff --git a/drivers/base/memory.c b/drivers/base/memory.c index 5947b5a5686d..c54e80fd25a8 100644 --- a/drivers/base/memory.c +++ b/drivers/base/memory.c @@ -34,12 +34,12 @@ static DEFINE_MUTEX(mem_sysfs_mutex); static int sections_per_block; -static inline int base_memory_block_id(unsigned long section_nr) +static inline unsigned long base_memory_block_id(unsigned long section_nr) { return section_nr / sections_per_block; } -static inline int pfn_to_block_id(unsigned long pfn) +static inline unsigned long pfn_to_block_id(unsigned long pfn) { return base_memory_block_id(pfn_to_section_nr(pfn)); } @@ -587,7 +587,7 @@ int __weak arch_get_memory_phys_device(unsigned long start_pfn) * A reference for the returned object is held and the reference for the * hinted object is released. */ -static struct memory_block *find_memory_block_by_id(int block_id, +static struct memory_block *find_memory_block_by_id(unsigned long block_id, struct memory_block *hint) { struct device *hintdev = hint ? &hint->dev : NULL; @@ -604,7 +604,7 @@ static struct memory_block *find_memory_block_by_id(int block_id, struct memory_block *find_memory_block_hinted(struct mem_section *section, struct memory_block *hint) { - int block_id = base_memory_block_id(__section_nr(section)); + unsigned long block_id = base_memory_block_id(__section_nr(section)); return find_memory_block_by_id(block_id, hint); } @@ -663,8 +663,8 @@ int register_memory(struct memory_block *memory) return ret; } -static int init_memory_block(struct memory_block **memory, int block_id, - unsigned long state) +static int init_memory_block(struct memory_block **memory, + unsigned long block_id, unsigned long state) { struct memory_block *mem; unsigned long start_pfn; @@ -729,8 +729,8 @@ static void unregister_memory(struct memory_block *memory) */ int create_memory_block_devices(unsigned long start, unsigned long size) { - const int start_block_id = pfn_to_block_id(PFN_DOWN(start)); - int end_block_id = pfn_to_block_id(PFN_DOWN(start + size)); + const unsigned long start_block_id = pfn_to_block_id(PFN_DOWN(start)); + unsigned long end_block_id = pfn_to_block_id(PFN_DOWN(start + size)); struct memory_block *mem; unsigned long block_id; int ret = 0; @@ -766,10 +766,10 @@ int create_memory_block_devices(unsigned long start, unsigned long size) */ void remove_memory_block_devices(unsigned long start, unsigned long size) { - const int start_block_id = pfn_to_block_id(PFN_DOWN(start)); - const int end_block_id = pfn_to_block_id(PFN_DOWN(start + size)); + const unsigned long start_block_id = pfn_to_block_id(PFN_DOWN(start)); + const unsigned long end_block_id = pfn_to_block_id(PFN_DOWN(start + size)); struct memory_block *mem; - int block_id; + unsigned long block_id; if (WARN_ON_ONCE(!IS_ALIGNED(start, memory_block_size_bytes()) || !IS_ALIGNED(size, memory_block_size_bytes()))) From patchwork Thu Jun 20 10:35:17 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Hildenbrand X-Patchwork-Id: 11006415 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9746514DB for ; Thu, 20 Jun 2019 10:35:56 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 88E04285CC for ; Thu, 20 Jun 2019 10:35:56 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7CCB6285EA; Thu, 20 Jun 2019 10:35:56 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2B9A6285CC for ; Thu, 20 Jun 2019 10:35:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731585AbfFTKfu (ORCPT ); Thu, 20 Jun 2019 06:35:50 -0400 Received: from mx1.redhat.com ([209.132.183.28]:53824 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731553AbfFTKft (ORCPT ); Thu, 20 Jun 2019 06:35:49 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 7828130C2534; Thu, 20 Jun 2019 10:35:49 +0000 (UTC) Received: from t460s.redhat.com (ovpn-117-88.ams2.redhat.com [10.36.117.88]) by smtp.corp.redhat.com (Postfix) with ESMTP id 53CE860600; Thu, 20 Jun 2019 10:35:47 +0000 (UTC) From: David Hildenbrand To: linux-kernel@vger.kernel.org Cc: Dan Williams , Andrew Morton , linuxppc-dev@lists.ozlabs.org, linux-acpi@vger.kernel.org, linux-mm@kvack.org, David Hildenbrand , Greg Kroah-Hartman , "Rafael J. Wysocki" , Keith Busch , Oscar Salvador Subject: [PATCH v2 3/6] mm: Make register_mem_sect_under_node() static Date: Thu, 20 Jun 2019 12:35:17 +0200 Message-Id: <20190620103520.23481-4-david@redhat.com> In-Reply-To: <20190620103520.23481-1-david@redhat.com> References: <20190620103520.23481-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.40]); Thu, 20 Jun 2019 10:35:49 +0000 (UTC) Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP It is only used internally. Cc: Greg Kroah-Hartman Cc: "Rafael J. Wysocki" Cc: Andrew Morton Cc: Keith Busch Cc: Oscar Salvador Signed-off-by: David Hildenbrand --- drivers/base/node.c | 3 ++- include/linux/node.h | 7 ------- 2 files changed, 2 insertions(+), 8 deletions(-) diff --git a/drivers/base/node.c b/drivers/base/node.c index 9be88fd05147..e6364e3e3e31 100644 --- a/drivers/base/node.c +++ b/drivers/base/node.c @@ -752,7 +752,8 @@ static int __ref get_nid_for_pfn(unsigned long pfn) } /* register memory section under specified node if it spans that node */ -int register_mem_sect_under_node(struct memory_block *mem_blk, void *arg) +static int register_mem_sect_under_node(struct memory_block *mem_blk, + void *arg) { int ret, nid = *(int *)arg; unsigned long pfn, sect_start_pfn, sect_end_pfn; diff --git a/include/linux/node.h b/include/linux/node.h index 548c226966a2..4866f32a02d8 100644 --- a/include/linux/node.h +++ b/include/linux/node.h @@ -137,8 +137,6 @@ static inline int register_one_node(int nid) extern void unregister_one_node(int nid); extern int register_cpu_under_node(unsigned int cpu, unsigned int nid); extern int unregister_cpu_under_node(unsigned int cpu, unsigned int nid); -extern int register_mem_sect_under_node(struct memory_block *mem_blk, - void *arg); extern void unregister_memory_block_under_nodes(struct memory_block *mem_blk); extern int register_memory_node_under_compute_node(unsigned int mem_nid, @@ -170,11 +168,6 @@ static inline int unregister_cpu_under_node(unsigned int cpu, unsigned int nid) { return 0; } -static inline int register_mem_sect_under_node(struct memory_block *mem_blk, - void *arg) -{ - return 0; -} static inline void unregister_memory_block_under_nodes(struct memory_block *mem_blk) { } From patchwork Thu Jun 20 10:35:18 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Hildenbrand X-Patchwork-Id: 11006419 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 276F614BB for ; Thu, 20 Jun 2019 10:36:03 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 16C7F285D4 for ; Thu, 20 Jun 2019 10:36:03 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0689F285EA; Thu, 20 Jun 2019 10:36:03 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 403A3285CC for ; Thu, 20 Jun 2019 10:36:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730660AbfFTKf4 (ORCPT ); Thu, 20 Jun 2019 06:35:56 -0400 Received: from mx1.redhat.com ([209.132.183.28]:37812 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731553AbfFTKfz (ORCPT ); Thu, 20 Jun 2019 06:35:55 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 242293098576; Thu, 20 Jun 2019 10:35:55 +0000 (UTC) Received: from t460s.redhat.com (ovpn-117-88.ams2.redhat.com [10.36.117.88]) by smtp.corp.redhat.com (Postfix) with ESMTP id C66445F7C0; Thu, 20 Jun 2019 10:35:49 +0000 (UTC) From: David Hildenbrand To: linux-kernel@vger.kernel.org Cc: Dan Williams , Andrew Morton , linuxppc-dev@lists.ozlabs.org, linux-acpi@vger.kernel.org, linux-mm@kvack.org, David Hildenbrand , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , "Rafael J. Wysocki" , Len Brown , Greg Kroah-Hartman , Rashmica Gupta , Pavel Tatashin , Anshuman Khandual , Michael Neuling , Thomas Gleixner , Oscar Salvador , Michal Hocko , Wei Yang , Juergen Gross , Qian Cai , Arun KS Subject: [PATCH v2 4/6] mm/memory_hotplug: Rename walk_memory_range() and pass start+size instead of pfns Date: Thu, 20 Jun 2019 12:35:18 +0200 Message-Id: <20190620103520.23481-5-david@redhat.com> In-Reply-To: <20190620103520.23481-1-david@redhat.com> References: <20190620103520.23481-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.49]); Thu, 20 Jun 2019 10:35:55 +0000 (UTC) Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP walk_memory_range() was once used to iterate over sections. Now, it iterates over memory blocks. Rename the function, fixup the documentation. Also, pass start+size instead of PFNs, which is what most callers already have at hand. (we'll rework link_mem_sections() most probably soon) Follow-up patches wil rework, simplify, and move walk_memory_blocks() to drivers/base/memory.c. Note: walk_memory_blocks() only works correctly right now if the start_pfn is aligned to a section start. This is the case right now, but we'll generalize the function in a follow up patch so the semantics match the documentation. Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Michael Ellerman Cc: "Rafael J. Wysocki" Cc: Len Brown Cc: Greg Kroah-Hartman Cc: David Hildenbrand Cc: Rashmica Gupta Cc: Andrew Morton Cc: Pavel Tatashin Cc: Anshuman Khandual Cc: Michael Neuling Cc: Thomas Gleixner Cc: Oscar Salvador Cc: Michal Hocko Cc: Wei Yang Cc: Juergen Gross Cc: Qian Cai Cc: Arun KS Signed-off-by: David Hildenbrand --- arch/powerpc/platforms/powernv/memtrace.c | 22 ++++++++++----------- drivers/acpi/acpi_memhotplug.c | 19 ++++-------------- drivers/base/node.c | 5 +++-- include/linux/memory_hotplug.h | 2 +- mm/memory_hotplug.c | 24 ++++++++++++----------- 5 files changed, 32 insertions(+), 40 deletions(-) diff --git a/arch/powerpc/platforms/powernv/memtrace.c b/arch/powerpc/platforms/powernv/memtrace.c index 5e53c1392d3b..8c82c041afe6 100644 --- a/arch/powerpc/platforms/powernv/memtrace.c +++ b/arch/powerpc/platforms/powernv/memtrace.c @@ -70,23 +70,24 @@ static int change_memblock_state(struct memory_block *mem, void *arg) /* called with device_hotplug_lock held */ static bool memtrace_offline_pages(u32 nid, u64 start_pfn, u64 nr_pages) { + const unsigned long start = PFN_PHYS(start_pfn); + const unsigned long size = PFN_PHYS(nr_pages); u64 end_pfn = start_pfn + nr_pages - 1; - if (walk_memory_range(start_pfn, end_pfn, NULL, - check_memblock_online)) + if (walk_memory_blocks(start, size, NULL, check_memblock_online)) return false; - walk_memory_range(start_pfn, end_pfn, (void *)MEM_GOING_OFFLINE, - change_memblock_state); + walk_memory_blocks(start, size, (void *)MEM_GOING_OFFLINE, + change_memblock_state); if (offline_pages(start_pfn, nr_pages)) { - walk_memory_range(start_pfn, end_pfn, (void *)MEM_ONLINE, - change_memblock_state); + walk_memory_blocks(start, size, (void *)MEM_ONLINE, + change_memblock_state); return false; } - walk_memory_range(start_pfn, end_pfn, (void *)MEM_OFFLINE, - change_memblock_state); + walk_memory_blocks(start, size, (void *)MEM_OFFLINE, + change_memblock_state); return true; @@ -242,9 +243,8 @@ static int memtrace_online(void) */ if (!memhp_auto_online) { lock_device_hotplug(); - walk_memory_range(PFN_DOWN(ent->start), - PFN_UP(ent->start + ent->size - 1), - NULL, online_mem_block); + walk_memory_blocks(ent->start, ent->size, NULL, + online_mem_block); unlock_device_hotplug(); } diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c index db013dc21c02..e294f44a7850 100644 --- a/drivers/acpi/acpi_memhotplug.c +++ b/drivers/acpi/acpi_memhotplug.c @@ -155,16 +155,6 @@ static int acpi_memory_check_device(struct acpi_memory_device *mem_device) return 0; } -static unsigned long acpi_meminfo_start_pfn(struct acpi_memory_info *info) -{ - return PFN_DOWN(info->start_addr); -} - -static unsigned long acpi_meminfo_end_pfn(struct acpi_memory_info *info) -{ - return PFN_UP(info->start_addr + info->length-1); -} - static int acpi_bind_memblk(struct memory_block *mem, void *arg) { return acpi_bind_one(&mem->dev, arg); @@ -173,9 +163,8 @@ static int acpi_bind_memblk(struct memory_block *mem, void *arg) static int acpi_bind_memory_blocks(struct acpi_memory_info *info, struct acpi_device *adev) { - return walk_memory_range(acpi_meminfo_start_pfn(info), - acpi_meminfo_end_pfn(info), adev, - acpi_bind_memblk); + return walk_memory_blocks(info->start_addr, info->length, adev, + acpi_bind_memblk); } static int acpi_unbind_memblk(struct memory_block *mem, void *arg) @@ -186,8 +175,8 @@ static int acpi_unbind_memblk(struct memory_block *mem, void *arg) static void acpi_unbind_memory_blocks(struct acpi_memory_info *info) { - walk_memory_range(acpi_meminfo_start_pfn(info), - acpi_meminfo_end_pfn(info), NULL, acpi_unbind_memblk); + walk_memory_blocks(info->start_addr, info->length, NULL, + acpi_unbind_memblk); } static int acpi_memory_enable_device(struct acpi_memory_device *mem_device) diff --git a/drivers/base/node.c b/drivers/base/node.c index e6364e3e3e31..d8c02e65df68 100644 --- a/drivers/base/node.c +++ b/drivers/base/node.c @@ -833,8 +833,9 @@ void unregister_memory_block_under_nodes(struct memory_block *mem_blk) int link_mem_sections(int nid, unsigned long start_pfn, unsigned long end_pfn) { - return walk_memory_range(start_pfn, end_pfn, (void *)&nid, - register_mem_sect_under_node); + return walk_memory_blocks(PFN_PHYS(start_pfn), + PFN_PHYS(end_pfn - start_pfn), (void *)&nid, + register_mem_sect_under_node); } #ifdef CONFIG_HUGETLBFS diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h index 79e0add6a597..d9fffc34949f 100644 --- a/include/linux/memory_hotplug.h +++ b/include/linux/memory_hotplug.h @@ -340,7 +340,7 @@ static inline void __remove_memory(int nid, u64 start, u64 size) {} #endif /* CONFIG_MEMORY_HOTREMOVE */ extern void __ref free_area_init_core_hotplug(int nid); -extern int walk_memory_range(unsigned long start_pfn, unsigned long end_pfn, +extern int walk_memory_blocks(unsigned long start, unsigned long size, void *arg, int (*func)(struct memory_block *, void *)); extern int __add_memory(int nid, u64 start, u64 size); extern int add_memory(int nid, u64 start, u64 size); diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index a88c5f334e5a..122a7d31efdd 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1126,8 +1126,7 @@ int __ref add_memory_resource(int nid, struct resource *res) /* online pages if requested */ if (memhp_auto_online) - walk_memory_range(PFN_DOWN(start), PFN_UP(start + size - 1), - NULL, online_memory_block); + walk_memory_blocks(start, size, NULL, online_memory_block); return ret; error: @@ -1665,20 +1664,24 @@ int offline_pages(unsigned long start_pfn, unsigned long nr_pages) #endif /* CONFIG_MEMORY_HOTREMOVE */ /** - * walk_memory_range - walks through all mem sections in [start_pfn, end_pfn) - * @start_pfn: start pfn of the memory range - * @end_pfn: end pfn of the memory range + * walk_memory_blocks - walk through all present memory blocks overlapped + * by the range [start, start + size) + * + * @start: start address of the memory range + * @size: size of the memory range * @arg: argument passed to func - * @func: callback for each memory section walked + * @func: callback for each memory block walked * - * This function walks through all present mem sections in range - * [start_pfn, end_pfn) and call func on each mem section. + * This function walks through all present memory blocks overlapped by the + * range [start, start + size), calling func on each memory block. * * Returns the return value of func. */ -int walk_memory_range(unsigned long start_pfn, unsigned long end_pfn, +int walk_memory_blocks(unsigned long start, unsigned long size, void *arg, int (*func)(struct memory_block *, void *)) { + const unsigned long start_pfn = PFN_DOWN(start); + const unsigned long end_pfn = PFN_UP(start + size - 1); struct memory_block *mem = NULL; struct mem_section *section; unsigned long pfn, section_nr; @@ -1824,8 +1827,7 @@ static int __ref try_remove_memory(int nid, u64 start, u64 size) * whether all memory blocks in question are offline and return error * if this is not the case. */ - rc = walk_memory_range(PFN_DOWN(start), PFN_UP(start + size - 1), NULL, - check_memblock_offlined_cb); + rc = walk_memory_blocks(start, size, NULL, check_memblock_offlined_cb); if (rc) goto done; From patchwork Thu Jun 20 10:35:19 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Hildenbrand X-Patchwork-Id: 11006427 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A56F314BB for ; Thu, 20 Jun 2019 10:36:10 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 96E22285CC for ; Thu, 20 Jun 2019 10:36:10 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8AB13285EA; Thu, 20 Jun 2019 10:36:10 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EBBED285CC for ; Thu, 20 Jun 2019 10:36:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730815AbfFTKgC (ORCPT ); Thu, 20 Jun 2019 06:36:02 -0400 Received: from mx1.redhat.com ([209.132.183.28]:37892 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730899AbfFTKf7 (ORCPT ); Thu, 20 Jun 2019 06:35:59 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 11F6230BC57F; Thu, 20 Jun 2019 10:35:59 +0000 (UTC) Received: from t460s.redhat.com (ovpn-117-88.ams2.redhat.com [10.36.117.88]) by smtp.corp.redhat.com (Postfix) with ESMTP id 72834608A7; Thu, 20 Jun 2019 10:35:55 +0000 (UTC) From: David Hildenbrand To: linux-kernel@vger.kernel.org Cc: Dan Williams , Andrew Morton , linuxppc-dev@lists.ozlabs.org, linux-acpi@vger.kernel.org, linux-mm@kvack.org, David Hildenbrand , Greg Kroah-Hartman , "Rafael J. Wysocki" , Stephen Rothwell , Pavel Tatashin , Andrew Banman , "mike.travis@hpe.com" , Oscar Salvador , Michal Hocko , Wei Yang , Arun KS , Qian Cai Subject: [PATCH v2 5/6] mm/memory_hotplug: Move and simplify walk_memory_blocks() Date: Thu, 20 Jun 2019 12:35:19 +0200 Message-Id: <20190620103520.23481-6-david@redhat.com> In-Reply-To: <20190620103520.23481-1-david@redhat.com> References: <20190620103520.23481-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.49]); Thu, 20 Jun 2019 10:35:59 +0000 (UTC) Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Let's move walk_memory_blocks() to the place where memory block logic resides and simplify it. While at it, add a type for the callback function. Cc: Greg Kroah-Hartman Cc: "Rafael J. Wysocki" Cc: David Hildenbrand Cc: Andrew Morton Cc: Stephen Rothwell Cc: Pavel Tatashin Cc: Andrew Banman Cc: "mike.travis@hpe.com" Cc: Oscar Salvador Cc: Michal Hocko Cc: Wei Yang Cc: Arun KS Cc: Qian Cai Signed-off-by: David Hildenbrand --- drivers/base/memory.c | 42 ++++++++++++++++++++++++++ include/linux/memory.h | 3 ++ include/linux/memory_hotplug.h | 2 -- mm/memory_hotplug.c | 55 ---------------------------------- 4 files changed, 45 insertions(+), 57 deletions(-) diff --git a/drivers/base/memory.c b/drivers/base/memory.c index c54e80fd25a8..0204384b4d1d 100644 --- a/drivers/base/memory.c +++ b/drivers/base/memory.c @@ -44,6 +44,11 @@ static inline unsigned long pfn_to_block_id(unsigned long pfn) return base_memory_block_id(pfn_to_section_nr(pfn)); } +static inline unsigned long phys_to_block_id(unsigned long phys) +{ + return pfn_to_block_id(PFN_DOWN(phys)); +} + static int memory_subsys_online(struct device *dev); static int memory_subsys_offline(struct device *dev); @@ -851,3 +856,40 @@ int __init memory_dev_init(void) printk(KERN_ERR "%s() failed: %d\n", __func__, ret); return ret; } + +/** + * walk_memory_blocks - walk through all present memory blocks overlapped + * by the range [start, start + size) + * + * @start: start address of the memory range + * @size: size of the memory range + * @arg: argument passed to func + * @func: callback for each memory section walked + * + * This function walks through all present memory blocks overlapped by the + * range [start, start + size), calling func on each memory block. + * + * In case func() returns an error, walking is aborted and the error is + * returned. + */ +int walk_memory_blocks(unsigned long start, unsigned long size, + void *arg, walk_memory_blocks_func_t func) +{ + const unsigned long start_block_id = phys_to_block_id(start); + const unsigned long end_block_id = phys_to_block_id(start + size - 1); + struct memory_block *mem; + unsigned long block_id; + int ret = 0; + + for (block_id = start_block_id; block_id <= end_block_id; block_id++) { + mem = find_memory_block_by_id(block_id, NULL); + if (!mem) + continue; + + ret = func(mem, arg); + put_device(&mem->dev); + if (ret) + break; + } + return ret; +} diff --git a/include/linux/memory.h b/include/linux/memory.h index f26a5417ec5d..b3b388775a30 100644 --- a/include/linux/memory.h +++ b/include/linux/memory.h @@ -119,6 +119,9 @@ extern int memory_isolate_notify(unsigned long val, void *v); extern struct memory_block *find_memory_block_hinted(struct mem_section *, struct memory_block *); extern struct memory_block *find_memory_block(struct mem_section *); +typedef int (*walk_memory_blocks_func_t)(struct memory_block *, void *); +extern int walk_memory_blocks(unsigned long start, unsigned long size, + void *arg, walk_memory_blocks_func_t func); #define CONFIG_MEM_BLOCK_SIZE (PAGES_PER_SECTION<= mem->start_section_nr) && - (section_nr <= mem->end_section_nr)) - continue; - - mem = find_memory_block_hinted(section, mem); - if (!mem) - continue; - - ret = func(mem, arg); - if (ret) { - kobject_put(&mem->dev.kobj); - return ret; - } - } - - if (mem) - kobject_put(&mem->dev.kobj); - - return 0; -} - -#ifdef CONFIG_MEMORY_HOTREMOVE static int check_memblock_offlined_cb(struct memory_block *mem, void *arg) { int ret = !is_memblock_offlined(mem); From patchwork Thu Jun 20 10:35:20 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Hildenbrand X-Patchwork-Id: 11006425 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 83BF014DB for ; Thu, 20 Jun 2019 10:36:08 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 75AD4285CC for ; Thu, 20 Jun 2019 10:36:08 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 69243285EA; Thu, 20 Jun 2019 10:36:08 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id F1E71285CC for ; Thu, 20 Jun 2019 10:36:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730899AbfFTKgD (ORCPT ); Thu, 20 Jun 2019 06:36:03 -0400 Received: from mx1.redhat.com ([209.132.183.28]:52822 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731681AbfFTKgD (ORCPT ); Thu, 20 Jun 2019 06:36:03 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 3AF3386663; Thu, 20 Jun 2019 10:36:02 +0000 (UTC) Received: from t460s.redhat.com (ovpn-117-88.ams2.redhat.com [10.36.117.88]) by smtp.corp.redhat.com (Postfix) with ESMTP id 628215C66B; Thu, 20 Jun 2019 10:35:59 +0000 (UTC) From: David Hildenbrand To: linux-kernel@vger.kernel.org Cc: Dan Williams , Andrew Morton , linuxppc-dev@lists.ozlabs.org, linux-acpi@vger.kernel.org, linux-mm@kvack.org, David Hildenbrand , Greg Kroah-Hartman , "Rafael J. Wysocki" , Stephen Rothwell , Pavel Tatashin , "mike.travis@hpe.com" Subject: [PATCH v2 6/6] drivers/base/memory.c: Get rid of find_memory_block_hinted() Date: Thu, 20 Jun 2019 12:35:20 +0200 Message-Id: <20190620103520.23481-7-david@redhat.com> In-Reply-To: <20190620103520.23481-1-david@redhat.com> References: <20190620103520.23481-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.26]); Thu, 20 Jun 2019 10:36:02 +0000 (UTC) Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP No longer needed, let's remove it. Also, drop the "hint" parameter completely from "find_memory_block_by_id", as nobody needs it anymore. Cc: Greg Kroah-Hartman Cc: "Rafael J. Wysocki" Cc: Andrew Morton Cc: Stephen Rothwell Cc: Pavel Tatashin Cc: "mike.travis@hpe.com" Signed-off-by: David Hildenbrand --- drivers/base/memory.c | 32 ++++++++++---------------------- include/linux/memory.h | 2 -- 2 files changed, 10 insertions(+), 24 deletions(-) diff --git a/drivers/base/memory.c b/drivers/base/memory.c index 0204384b4d1d..fefb64d3588e 100644 --- a/drivers/base/memory.c +++ b/drivers/base/memory.c @@ -592,26 +592,12 @@ int __weak arch_get_memory_phys_device(unsigned long start_pfn) * A reference for the returned object is held and the reference for the * hinted object is released. */ -static struct memory_block *find_memory_block_by_id(unsigned long block_id, - struct memory_block *hint) +static struct memory_block *find_memory_block_by_id(unsigned long block_id) { - struct device *hintdev = hint ? &hint->dev : NULL; struct device *dev; - dev = subsys_find_device_by_id(&memory_subsys, block_id, hintdev); - if (hint) - put_device(&hint->dev); - if (!dev) - return NULL; - return to_memory_block(dev); -} - -struct memory_block *find_memory_block_hinted(struct mem_section *section, - struct memory_block *hint) -{ - unsigned long block_id = base_memory_block_id(__section_nr(section)); - - return find_memory_block_by_id(block_id, hint); + dev = subsys_find_device_by_id(&memory_subsys, block_id, NULL); + return dev ? to_memory_block(dev) : NULL; } /* @@ -624,7 +610,9 @@ struct memory_block *find_memory_block_hinted(struct mem_section *section, */ struct memory_block *find_memory_block(struct mem_section *section) { - return find_memory_block_hinted(section, NULL); + unsigned long block_id = base_memory_block_id(__section_nr(section)); + + return find_memory_block_by_id(block_id); } static struct attribute *memory_memblk_attrs[] = { @@ -675,7 +663,7 @@ static int init_memory_block(struct memory_block **memory, unsigned long start_pfn; int ret = 0; - mem = find_memory_block_by_id(block_id, NULL); + mem = find_memory_block_by_id(block_id); if (mem) { put_device(&mem->dev); return -EEXIST; @@ -755,7 +743,7 @@ int create_memory_block_devices(unsigned long start, unsigned long size) end_block_id = block_id; for (block_id = start_block_id; block_id != end_block_id; block_id++) { - mem = find_memory_block_by_id(block_id, NULL); + mem = find_memory_block_by_id(block_id); mem->section_count = 0; unregister_memory(mem); } @@ -782,7 +770,7 @@ void remove_memory_block_devices(unsigned long start, unsigned long size) mutex_lock(&mem_sysfs_mutex); for (block_id = start_block_id; block_id != end_block_id; block_id++) { - mem = find_memory_block_by_id(block_id, NULL); + mem = find_memory_block_by_id(block_id); if (WARN_ON_ONCE(!mem)) continue; mem->section_count = 0; @@ -882,7 +870,7 @@ int walk_memory_blocks(unsigned long start, unsigned long size, int ret = 0; for (block_id = start_block_id; block_id <= end_block_id; block_id++) { - mem = find_memory_block_by_id(block_id, NULL); + mem = find_memory_block_by_id(block_id); if (!mem) continue; diff --git a/include/linux/memory.h b/include/linux/memory.h index b3b388775a30..02e633f3ede0 100644 --- a/include/linux/memory.h +++ b/include/linux/memory.h @@ -116,8 +116,6 @@ void remove_memory_block_devices(unsigned long start, unsigned long size); extern int memory_dev_init(void); extern int memory_notify(unsigned long val, void *v); extern int memory_isolate_notify(unsigned long val, void *v); -extern struct memory_block *find_memory_block_hinted(struct mem_section *, - struct memory_block *); extern struct memory_block *find_memory_block(struct mem_section *); typedef int (*walk_memory_blocks_func_t)(struct memory_block *, void *); extern int walk_memory_blocks(unsigned long start, unsigned long size,