From patchwork Fri Jul 28 12:06:15 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Prarit Bhargava X-Patchwork-Id: 9868589 X-Patchwork-Delegate: lenb@kernel.org 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 CA0876037D for ; Fri, 28 Jul 2017 12:06:31 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B5475288A2 for ; Fri, 28 Jul 2017 12:06:31 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id AA69E288D4; Fri, 28 Jul 2017 12:06:31 +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 514C2288A2 for ; Fri, 28 Jul 2017 12:06:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751713AbdG1MGa (ORCPT ); Fri, 28 Jul 2017 08:06:30 -0400 Received: from mx1.redhat.com ([209.132.183.28]:55992 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751668AbdG1MGa (ORCPT ); Fri, 28 Jul 2017 08:06:30 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 2DF0C103220; Fri, 28 Jul 2017 12:06:30 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 2DF0C103220 Authentication-Results: ext-mx01.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx01.extmail.prod.ext.phx2.redhat.com; spf=fail smtp.mailfrom=prarit@redhat.com Received: from praritdesktop.bos.redhat.com (prarit-guest.khw.lab.eng.bos.redhat.com [10.16.186.145]) by smtp.corp.redhat.com (Postfix) with ESMTP id DA5CC77C9A; Fri, 28 Jul 2017 12:06:26 +0000 (UTC) From: Prarit Bhargava To: linux-pm@vger.kernel.org Cc: lenb@kernel.org, Prarit Bhargava , Len Brown Subject: [PATCH 1/7] turbostat: set max_num_cpus equal to the cpumask length Date: Fri, 28 Jul 2017 08:06:15 -0400 Message-Id: <1501243581-31491-3-git-send-email-prarit@redhat.com> In-Reply-To: <1501243581-31491-1-git-send-email-prarit@redhat.com> References: <1501243581-31491-1-git-send-email-prarit@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.25]); Fri, 28 Jul 2017 12:06:30 +0000 (UTC) Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Future fixes will use sysfs files that contain cpumask output. The code needs to know the length of the cpumask in order to determine which cpus are set in a cpumask. Currently topo.max_cpu_num is the maximum cpu number. It can be increased the the maximum value of cpus represented in cpumasks. Set max_num_cpus to the length of a cpumask. Signed-off-by: Prarit Bhargava Cc: Len Brown --- tools/power/x86/turbostat/turbostat.c | 21 ++++++++++++++++----- 1 file changed, 16 insertions(+), 5 deletions(-) diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c index 0dafba2c1e7d..6d368e744d27 100644 --- a/tools/power/x86/turbostat/turbostat.c +++ b/tools/power/x86/turbostat/turbostat.c @@ -2413,6 +2413,20 @@ void re_initialize(void) printf("turbostat: re-initialized with num_cpus %d\n", topo.num_cpus); } +void set_max_cpu_num(void) +{ + FILE *filep; + unsigned long dummy; + + topo.max_cpu_num = 0; + filep = fopen_or_die( + "/sys/devices/system/cpu/cpu0/topology/thread_siblings", + "r"); + while (fscanf(filep, "%lx,", &dummy) == 1) + topo.max_cpu_num+=32; + fclose(filep); + topo.max_cpu_num--; /* 0 based */ +} /* * count_cpus() @@ -2420,10 +2434,7 @@ void re_initialize(void) */ int count_cpus(int cpu) { - if (topo.max_cpu_num < cpu) - topo.max_cpu_num = cpu; - - topo.num_cpus += 1; + topo.num_cpus++; return 0; } int mark_cpu_present(int cpu) @@ -4320,8 +4331,8 @@ void topology_probe() } *cpus; /* Initialize num_cpus, max_cpu_num */ + set_max_cpu_num(); topo.num_cpus = 0; - topo.max_cpu_num = 0; for_all_proc_cpus(count_cpus); if (!summary_only && topo.num_cpus > 1) BIC_PRESENT(BIC_CPU);