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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 51F8EC35671 for ; Sun, 23 Feb 2020 19:25:52 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1695C206ED for ; Sun, 23 Feb 2020 19:25:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="bpCs0eLW"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="E3gpa2eW" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1695C206ED Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=qDw6n/EDGKMH/k69y4O69lBXp/b+EZ8a7IQvudyjq/U=; b=bpCs0eLWYYHO41 Qv751qqTp4YdPXonIhhPK9UxPJzmVz2oeE0ZdRy7gJOifUhkbxgANaFlQfFQuN5tFyzfmG5j8mBf+ O5GY07pb9BOPLGp0vnaxLEDz0uSreHlt2fnghdHyWDozEhCabgqqHSp4/qYZMFbytWlwYqHZCQh46 DF3FE7ce8oMIJ+QJQRdIX8/zzd/BxRiNwaf+8bZFdcFnNfRQfE9Lpb2sMERLchab2VNBxZ/Jy2cLi MK/QBVQ0BFznsq5aDkznSt0SIYbdFzrejIOSGeC+RLLBDiUTOqmGL0atFquTDyXQddF+sv/LAr3th 9uG7tLPzqmjIsO+iWNLg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1j5wsk-00008M-7D; Sun, 23 Feb 2020 19:25:38 +0000 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120] helo=us-smtp-1.mimecast.com) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1j5wsg-00005i-Ud for linux-arm-kernel@lists.infradead.org; Sun, 23 Feb 2020 19:25:36 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1582485929; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=UU+BZ7vU0vNDbayPRMPpX1ixOqnikP7N9LBd4qlvCto=; b=E3gpa2eWonfZ8wXHmPjW9pmZadPecWfzhrQBOEVZbPcpMlZmof6n0VD2IXHWbfrLmfHXsX WtpbPKOgOKcVrDy+x5y1QL8uY4TR5Wk8LxsjsdNld7PSrxN0lHU310RvJwU0OMAJXrjml7 ZITAgn9yj5Q0/XsIVjn43Y/jO3DOQ18= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-358-UwRa0Mr-NV2TRQOgVtHpPw-1; Sun, 23 Feb 2020 14:25:25 -0500 X-MC-Unique: UwRa0Mr-NV2TRQOgVtHpPw-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 1F85E184B121; Sun, 23 Feb 2020 19:25:24 +0000 (UTC) Received: from mail (ovpn-120-118.rdu2.redhat.com [10.10.120.118]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 3A42F60BF1; Sun, 23 Feb 2020 19:25:21 +0000 (UTC) From: Andrea Arcangeli To: Will Deacon , Catalin Marinas , Rafael Aquini , Mark Salter Subject: [PATCH 2/3] arm64: select CPUMASK_OFFSTACK if NUMA Date: Sun, 23 Feb 2020 14:25:19 -0500 Message-Id: <20200223192520.20808-3-aarcange@redhat.com> In-Reply-To: <20200223192520.20808-1-aarcange@redhat.com> References: <20200223192520.20808-1-aarcange@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200223_112535_070244_3A178616 X-CRM114-Status: UNSURE ( 9.99 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: QI Fuli , Jon Masters , linux-kernel@vger.kernel.org, Michal Hocko , linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org It's unclear why normally CPUMASK_OFFSTACK can only be manually configured "if DEBUG_PER_CPU_MAPS" which is not an option meant to be enabled on enterprise arm64 kernels. The default enterprise kernels NR_CPUS is 4096 which is fairly large. So it'll save some RAM and it'll increase reliability to select CPUMASK_OFFSET at least when NUMA is selected and a large NR_CPUS is to be expected. Signed-off-by: Andrea Arcangeli --- arch/arm64/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 0b30e884e088..882887e65394 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -955,6 +955,7 @@ config NUMA bool "Numa Memory Allocation and Scheduler Support" select ACPI_NUMA if ACPI select OF_NUMA + select CPUMASK_OFFSTACK help Enable NUMA (Non Uniform Memory Access) support. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel