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=-2.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,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 A3B01C070C3 for ; Wed, 12 Sep 2018 23:52:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 53E96206BB for ; Wed, 12 Sep 2018 23:52:05 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 53E96206BB Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726531AbeIME6v (ORCPT ); Thu, 13 Sep 2018 00:58:51 -0400 Received: from mga07.intel.com ([134.134.136.100]:39638 "EHLO mga07.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726276AbeIME6u (ORCPT ); Thu, 13 Sep 2018 00:58:50 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 12 Sep 2018 16:52:00 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.53,366,1531810800"; d="scan'208";a="91226310" Received: from romley-ivt3.sc.intel.com ([172.25.110.60]) by orsmga002.jf.intel.com with ESMTP; 12 Sep 2018 16:51:48 -0700 From: Fenghua Yu To: "Thomas Gleixner" , "Ingo Molnar" , "H Peter Anvin" , "Tony Luck" Cc: "linux-kernel" , "x86" , Xiaochen Shen , Fenghua Yu Subject: [PATCH v2] x86/intel_rdt: Show missing resctrl mount options Date: Wed, 12 Sep 2018 16:48:38 -0700 Message-Id: <1536796118-60135-1-git-send-email-fenghua.yu@intel.com> X-Mailer: git-send-email 2.5.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Xiaochen Shen In resctrl filesystem, we have some mount options to enable L3/L2 CDP and MBA Software Controller features if platform supports them: mount -t resctrl resctrl [-o cdp[,cdpl2][,mba_MBps]] /sys/fs/resctrl But currently only "cdp" option can be displayed. "cdpl2" and "mba_MBps" options are not showed even when they are active mount options. Before this patch: #mount -t resctrl resctrl -o cdp,mba_MBps /sys/fs/resctrl #grep resctrl /proc/mounts /sys/fs/resctrl /sys/fs/resctrl resctrl rw,relatime,cdp 0 0 After this patch: #mount -t resctrl resctrl -o cdp,mba_MBps /sys/fs/resctrl #grep resctrl /proc/mountts /sys/fs/resctrl /sys/fs/resctrl resctrl rw,relatime,cdp,mba_MBps 0 0 Signed-off-by: Xiaochen Shen Signed-off-by: Fenghua Yu --- arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c b/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c index b799c00bef09..82459a41fa84 100644 --- a/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c +++ b/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c @@ -2760,6 +2760,13 @@ static int rdtgroup_show_options(struct seq_file *seq, struct kernfs_root *kf) { if (rdt_resources_all[RDT_RESOURCE_L3DATA].alloc_enabled) seq_puts(seq, ",cdp"); + + if (rdt_resources_all[RDT_RESOURCE_L2DATA].alloc_enabled) + seq_puts(seq, ",cdpl2"); + + if (is_mba_sc(&rdt_resources_all[RDT_RESOURCE_MBA])) + seq_puts(seq, ",mba_MBps"); + return 0; } -- 2.19.0