From patchwork Tue Oct 13 23:55:42 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Morton X-Patchwork-Id: 11836471 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 41816921 for ; Tue, 13 Oct 2020 23:55:46 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 0AC852222E for ; Tue, 13 Oct 2020 23:55:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="Rqa5AUVW" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0AC852222E 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 DC7036B012A; Tue, 13 Oct 2020 19:55:44 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id D76776B012B; Tue, 13 Oct 2020 19:55:44 -0400 (EDT) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id C8B966B012C; Tue, 13 Oct 2020 19:55:44 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0156.hostedemail.com [216.40.44.156]) by kanga.kvack.org (Postfix) with ESMTP id 9D5756B012A for ; Tue, 13 Oct 2020 19:55:44 -0400 (EDT) Received: from smtpin02.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 438558249980 for ; Tue, 13 Oct 2020 23:55:44 +0000 (UTC) X-FDA: 77368562208.02.mint61_130d9f527207 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin02.hostedemail.com (Postfix) with ESMTP id 171961020109B for ; Tue, 13 Oct 2020 23:55:44 +0000 (UTC) X-Spam-Summary: 1,0,0,0f383acfc0002f1b,d41d8cd98f00b204,akpm@linux-foundation.org,,RULES_HIT:41:355:379:800:960:967:968:973:988:989:1260:1345:1359:1381:1431:1437:1534:1541:1711:1730:1747:1777:1792:2194:2199:2393:2525:2559:2563:2682:2685:2859:2902:2933:2937:2939:2942:2945:2947:2951:2954:3022:3138:3139:3140:3141:3142:3165:3352:3865:3867:3868:3934:3936:3938:3941:3944:3947:3950:3953:3956:3959:4321:5007:6119:6261:6653:7514:7576:7901:7903:9025:9545:10004:11026:11473:11658:11914:12043:12048:12296:12297:12438:12517:12519:12555:12679:12986:13069:13255:13311:13357:13846:14181:14384:14721:21080:21324:21451:21627:21939:30012:30054,0,RBL:198.145.29.99:@linux-foundation.org:.lbl8.mailshell.net-64.100.201.201 62.2.0.100;04yf7f9y9f4z71piff735zzrhnwyqoc4gbr63w5gd5x3jeor58bajwp4wtm8uj7.m31p43fpo9jdm6qah54iwecmkwn6ox4zzaktkmrki97wysitpodzpjueq5yqnyw.6-lbl8.mailshell.net-223.238.255.100,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fp,MSBL:0,DNSBL:neutral,Custom_ rules:0: X-HE-Tag: mint61_130d9f527207 X-Filterd-Recvd-Size: 2683 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf47.hostedemail.com (Postfix) with ESMTP for ; Tue, 13 Oct 2020 23:55:43 +0000 (UTC) Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id AC2212222E; Tue, 13 Oct 2020 23:55:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1602633342; bh=LVguj2JzhvnfLCa6fi7ifW7HaSlIjGzHxYQM2RtovCg=; h=Date:From:To:Subject:In-Reply-To:From; b=Rqa5AUVWqC0zzL0YaVmkJsL3mQmdNofA87CBAdtcCP07lL0OYD6JksudBxf/up3Rc CFkykpgrHLrqIGJ3Qi2dy3YVXCRSNSARaYGGJQJ3pI4upfwArd9QiXueQj5SxDL9+N frp0gHYohEDAQiNgNSnss1DNVymEd0RwlQi7Ex8A= Date: Tue, 13 Oct 2020 16:55:42 -0700 From: Andrew Morton To: akpm@linux-foundation.org, linux-mm@kvack.org, mateusznosek0@gmail.com, mm-commits@vger.kernel.org, torvalds@linux-foundation.org Subject: [patch 132/181] mm/page_alloc.c: clean code by removing unnecessary initialization Message-ID: <20201013235542.4GYzvcvIh%akpm@linux-foundation.org> In-Reply-To: <20201013164658.3bfd96cc224d8923e66a9f4e@linux-foundation.org> User-Agent: s-nail v14.8.16 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: Mateusz Nosek Subject: mm/page_alloc.c: clean code by removing unnecessary initialization Previously variable 'tmp' was initialized, but was not read later before reassigning. So the initialization can be removed. [akpm@linux-foundation.org: remove `tmp' altogether] Link: https://lkml.kernel.org/r/20200904132422.17387-1-mateusznosek0@gmail.com Signed-off-by: Mateusz Nosek Signed-off-by: Andrew Morton --- mm/page_alloc.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) --- a/mm/page_alloc.c~mm-page_allocc-clean-code-by-removing-unnecessary-initialization +++ a/mm/page_alloc.c @@ -5651,7 +5651,6 @@ static int find_next_best_node(int node, int n, val; int min_val = INT_MAX; int best_node = NUMA_NO_NODE; - const struct cpumask *tmp = cpumask_of_node(0); /* Use the local node if we haven't already */ if (!node_isset(node, *used_node_mask)) { @@ -5672,8 +5671,7 @@ static int find_next_best_node(int node, val += (n < node); /* Give preference to headless and unused nodes */ - tmp = cpumask_of_node(n); - if (!cpumask_empty(tmp)) + if (!cpumask_empty(cpumask_of_node(n))) val += PENALTY_FOR_NODE_WITH_CPUS; /* Slight preference for less loaded node */