Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751839AbbHQDQ1 (ORCPT ); Sun, 16 Aug 2015 23:16:27 -0400 Received: from mga09.intel.com ([134.134.136.24]:11175 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751302AbbHQDQD (ORCPT ); Sun, 16 Aug 2015 23:16:03 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.15,692,1432623600"; d="scan'208";a="543143338" From: Jiang Liu To: Andrew Morton , Mel Gorman , David Rientjes , Mike Galbraith , Peter Zijlstra , "Rafael J . Wysocki" , Tang Chen , Tejun Heo Cc: Jiang Liu , Tony Luck , linux-mm@kvack.org, linux-hotplug@vger.kernel.org, linux-kernel@vger.kernel.org, x86@kernel.org Subject: [Patch V3 2/9] kernel/profile.c: Replace cpu_to_mem() with cpu_to_node() Date: Mon, 17 Aug 2015 11:18:59 +0800 Message-Id: <1439781546-7217-3-git-send-email-jiang.liu@linux.intel.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1439781546-7217-1-git-send-email-jiang.liu@linux.intel.com> References: <1439781546-7217-1-git-send-email-jiang.liu@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1238 Lines: 34 Function profile_cpu_callback() allocates memory without specifying __GFP_THISNODE flag, so replace cpu_to_mem() with cpu_to_node() because cpu_to_mem() may cause suboptimal memory allocation if there's no free memory on the node returned by cpu_to_mem(). It's safe to use cpu_to_mem() because build_all_zonelists() also builds suitable fallback zonelist for memoryless node. Signed-off-by: Jiang Liu --- kernel/profile.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/profile.c b/kernel/profile.c index a7bcd28d6e9f..d14805bdcc4c 100644 --- a/kernel/profile.c +++ b/kernel/profile.c @@ -336,7 +336,7 @@ static int profile_cpu_callback(struct notifier_block *info, switch (action) { case CPU_UP_PREPARE: case CPU_UP_PREPARE_FROZEN: - node = cpu_to_mem(cpu); + node = cpu_to_node(cpu); per_cpu(cpu_profile_flip, cpu) = 0; if (!per_cpu(cpu_profile_hits, cpu)[1]) { page = alloc_pages_exact_node(node, -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/