From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT 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 7C60DC43387 for ; Tue, 8 Jan 2019 05:42:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 53CB82173C for ; Tue, 8 Jan 2019 05:42:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727810AbfAHFmk (ORCPT ); Tue, 8 Jan 2019 00:42:40 -0500 Received: from mxhk.zte.com.cn ([63.217.80.70]:48368 "EHLO mxhk.zte.com.cn" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727393AbfAHFmj (ORCPT ); Tue, 8 Jan 2019 00:42:39 -0500 Received: from mse01.zte.com.cn (unknown [10.30.3.20]) by Forcepoint Email with ESMTPS id D9A05A10950803A48DCA; Tue, 8 Jan 2019 13:42:36 +0800 (CST) Received: from notes_smtp.zte.com.cn ([10.30.1.239]) by mse01.zte.com.cn with ESMTP id x085gUe0006096; Tue, 8 Jan 2019 13:42:30 +0800 (GMT-8) (envelope-from wang.yi59@zte.com.cn) Received: from fox-host8.localdomain ([10.74.120.8]) by szsmtp06.zte.com.cn (Lotus Domino Release 8.5.3FP6) with ESMTP id 2019010813424340-21023466 ; Tue, 8 Jan 2019 13:42:43 +0800 From: Yi Wang To: tglx@linutronix.de Cc: mingo@redhat.com, bp@alien8.de, hpa@zytor.com, x86@kernel.org, akpm@linux-foundation.org, rppt@linux.vnet.ibm.com, mhocko@suse.com, pavel.tatashin@microsoft.com, joe@perches.com, jschoenh@amazon.de, m.mizuma@jp.fujitsu.com, n-horiguchi@ah.jp.nec.com, linux-kernel@vger.kernel.org, xue.zhihong@zte.com.cn, wang.yi59@zte.com.cn, "huang.zijiang" Subject: [PATCH] x86:kernel:e820c:kmemdup instead of duplicating its function Date: Tue, 8 Jan 2019 13:42:17 +0800 Message-Id: <1546926137-32136-1-git-send-email-wang.yi59@zte.com.cn> X-Mailer: git-send-email 1.8.3.1 X-MIMETrack: Itemize by SMTP Server on SZSMTP06/server/zte_ltd(Release 8.5.3FP6|November 21, 2013) at 2019-01-08 13:42:43, Serialize by Router on notes_smtp/zte_ltd(Release 9.0.1FP7|August 17, 2016) at 2019-01-08 13:42:26, Serialize complete at 2019-01-08 13:42:26 X-MAIL: mse01.zte.com.cn x085gUe0006096 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: "huang.zijiang" kmemdup has implemented the function that kmalloc() and memcpy(). Signed-off-by: huang.zijiang --- arch/x86/kernel/e820.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c index 50895c2..a687d10 100644 --- a/arch/x86/kernel/e820.c +++ b/arch/x86/kernel/e820.c @@ -671,21 +671,18 @@ __init void e820__reallocate_tables(void) int size; size = offsetof(struct e820_table, entries) + sizeof(struct e820_entry)*e820_table->nr_entries; - n = kmalloc(size, GFP_KERNEL); + n = kmemdup(e820_table, size, GFP_KERNEL); BUG_ON(!n); - memcpy(n, e820_table, size); e820_table = n; size = offsetof(struct e820_table, entries) + sizeof(struct e820_entry)*e820_table_kexec->nr_entries; - n = kmalloc(size, GFP_KERNEL); + n = kmemdup(e820_table_kexec, size, GFP_KERNEL); BUG_ON(!n); - memcpy(n, e820_table_kexec, size); e820_table_kexec = n; size = offsetof(struct e820_table, entries) + sizeof(struct e820_entry)*e820_table_firmware->nr_entries; - n = kmalloc(size, GFP_KERNEL); + n = kmemdup(e820_table_firmware, size, GFP_KERNEL); BUG_ON(!n); - memcpy(n, e820_table_firmware, size); e820_table_firmware = n; } -- 1.8.3.1