From patchwork Wed Sep 21 19:19:05 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: srinivas pandruvada X-Patchwork-Id: 9344115 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 3F3F860B16 for ; Wed, 21 Sep 2016 19:20:33 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2FC491FE82 for ; Wed, 21 Sep 2016 19:20:33 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 24922285DB; Wed, 21 Sep 2016 19:20:33 +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=-6.9 required=2.0 tests=BAYES_00,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 19884284DC for ; Wed, 21 Sep 2016 19:20:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S940767AbcIUTT1 (ORCPT ); Wed, 21 Sep 2016 15:19:27 -0400 Received: from mga05.intel.com ([192.55.52.43]:37402 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S938570AbcIUTTZ (ORCPT ); Wed, 21 Sep 2016 15:19:25 -0400 Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga105.fm.intel.com with ESMTP; 21 Sep 2016 12:19:22 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.30,375,1470726000"; d="scan'208";a="764204828" Received: from spandruv-desk.jf.intel.com ([10.54.75.13]) by FMSMGA003.fm.intel.com with ESMTP; 21 Sep 2016 12:19:22 -0700 From: Srinivas Pandruvada To: rjw@rjwysocki.net, tglx@linutronix.de, mingo@redhat.com, bp@suse.de Cc: x86@kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, peterz@infradead.org, tim.c.chen@linux.intel.com, jolsa@redhat.com, Srinivas Pandruvada Subject: [PATCH v4 03/10] x86/topology: Provide topology_num_packages() Date: Wed, 21 Sep 2016 12:19:05 -0700 Message-Id: <1474485552-141429-4-git-send-email-srinivas.pandruvada@linux.intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1474485552-141429-1-git-send-email-srinivas.pandruvada@linux.intel.com> References: <1474485552-141429-1-git-send-email-srinivas.pandruvada@linux.intel.com> 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 From: Tim Chen Returns number of cpu packages discovered. This information is needed to determine the size of the platform and decide if the Intel Turbo Boost Max Technology 3.0 (ITMT) feature should be turned on by default. The ITMT feature is more effective on single socket client like system that uses small number of cores most of the time. Signed-off-by: Tim Chen Signed-off-by: Srinivas Pandruvada --- arch/x86/include/asm/topology.h | 3 +++ arch/x86/kernel/smpboot.c | 5 +++++ 2 files changed, 8 insertions(+) diff --git a/arch/x86/include/asm/topology.h b/arch/x86/include/asm/topology.h index cf75871..3e95dfc 100644 --- a/arch/x86/include/asm/topology.h +++ b/arch/x86/include/asm/topology.h @@ -129,10 +129,13 @@ static inline int topology_max_smt_threads(void) } int topology_update_package_map(unsigned int apicid, unsigned int cpu); +extern int topology_num_packages(void); extern int topology_phys_to_logical_pkg(unsigned int pkg); #else #define topology_max_packages() (1) static inline int +topology_num_packages(void) { return 1; } +static inline int topology_update_package_map(unsigned int apicid, unsigned int cpu) { return 0; } static inline int topology_phys_to_logical_pkg(unsigned int pkg) { return 0; } static inline int topology_max_smt_threads(void) { return 1; } diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index 7137ec4..6a763a2 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -295,6 +295,11 @@ found: return 0; } +int topology_num_packages(void) +{ + return logical_packages; +} + /** * topology_phys_to_logical_pkg - Map a physical package id to a logical *