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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,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 F28BDC3F2D7 for ; Thu, 5 Mar 2020 22:47:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C944D206E6 for ; Thu, 5 Mar 2020 22:47:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727509AbgCEWrI (ORCPT ); Thu, 5 Mar 2020 17:47:08 -0500 Received: from mga18.intel.com ([134.134.136.126]:5017 "EHLO mga18.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726674AbgCEWps (ORCPT ); Thu, 5 Mar 2020 17:45:48 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 05 Mar 2020 14:45:47 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,519,1574150400"; d="scan'208";a="234674610" Received: from minkleyx-mobl1.amr.corp.intel.com (HELO spandruv-mobl.amr.corp.intel.com) ([10.252.207.66]) by fmsmga008.fm.intel.com with ESMTP; 05 Mar 2020 14:45:47 -0800 From: Srinivas Pandruvada To: andriy.shevchenko@linux.intel.com Cc: platform-driver-x86@vger.kernel.org, prarit@redhat.com, linux-kernel@vger.kernel.org, Srinivas Pandruvada Subject: [PATCH 06/27] tools/power/x86/intel-speed-select: Max CPU count calculation when CPU0 is offline Date: Thu, 5 Mar 2020 14:45:17 -0800 Message-Id: <20200305224538.490864-7-srinivas.pandruvada@linux.intel.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200305224538.490864-1-srinivas.pandruvada@linux.intel.com> References: <20200305224538.490864-1-srinivas.pandruvada@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Currently /sys/devices/system/cpu/cpu0/topology/thread_siblings is used to get the max CPU count. But when CPU0 is offline, then this file will be absent. So add processing so that we can get count from any first CPU in the system. which is online. Signed-off-by: Srinivas Pandruvada --- .../power/x86/intel-speed-select/isst-config.c | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) diff --git a/tools/power/x86/intel-speed-select/isst-config.c b/tools/power/x86/intel-speed-select/isst-config.c index b8f4846d7c78..c773c6cc02a5 100644 --- a/tools/power/x86/intel-speed-select/isst-config.c +++ b/tools/power/x86/intel-speed-select/isst-config.c @@ -316,10 +316,24 @@ static void set_max_cpu_num(void) { FILE *filep; unsigned long dummy; + int i; topo_max_cpus = 0; - filep = fopen_or_exit( - "/sys/devices/system/cpu/cpu0/topology/thread_siblings", "r"); + for (i = 0; i < 256; ++i) { + char path[256]; + + snprintf(path, sizeof(path), + "/sys/devices/system/cpu/cpu%d/topology/thread_siblings", i); + filep = fopen(path, "r"); + if (filep) + break; + } + + if (!filep) { + fprintf(stderr, "Can't get max cpu number\n"); + exit(0); + } + while (fscanf(filep, "%lx,", &dummy) == 1) topo_max_cpus += BITMASK_SIZE; fclose(filep); -- 2.24.1