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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,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 062D2C1B0F1 for ; Wed, 20 Jun 2018 00:29:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B53FE20693 for ; Wed, 20 Jun 2018 00:29:48 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B53FE20693 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=zytor.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 S1754226AbeFTA3r (ORCPT ); Tue, 19 Jun 2018 20:29:47 -0400 Received: from terminus.zytor.com ([198.137.202.136]:44739 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752703AbeFTA3n (ORCPT ); Tue, 19 Jun 2018 20:29:43 -0400 Received: from terminus.zytor.com (localhost [127.0.0.1]) by terminus.zytor.com (8.15.2/8.15.2) with ESMTPS id w5K0TcKH3299978 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Tue, 19 Jun 2018 17:29:38 -0700 Received: (from tipbot@localhost) by terminus.zytor.com (8.15.2/8.15.2/Submit) id w5K0Tc3M3299974; Tue, 19 Jun 2018 17:29:38 -0700 Date: Tue, 19 Jun 2018 17:29:38 -0700 X-Authentication-Warning: terminus.zytor.com: tipbot set sender to tipbot@zytor.com using -f From: tip-bot for Reinette Chatre Message-ID: Cc: hpa@zytor.com, tglx@linutronix.de, linux-kernel@vger.kernel.org, mingo@kernel.org, reinette.chatre@intel.com Reply-To: linux-kernel@vger.kernel.org, hpa@zytor.com, tglx@linutronix.de, reinette.chatre@intel.com, mingo@kernel.org In-Reply-To: <5ae3b3fea500e814f72047572f0cf94c353e9081.1527593971.git.reinette.chatre@intel.com> References: <5ae3b3fea500e814f72047572f0cf94c353e9081.1527593971.git.reinette.chatre@intel.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/cache] x86/intel_rdt: Resctrl files reflect pseudo-locked information Git-Commit-ID: 3b99f70ad03e2108e378c33af0ff13219dd9935e X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 3b99f70ad03e2108e378c33af0ff13219dd9935e Gitweb: https://git.kernel.org/tip/3b99f70ad03e2108e378c33af0ff13219dd9935e Author: Reinette Chatre AuthorDate: Tue, 29 May 2018 05:57:56 -0700 Committer: Thomas Gleixner CommitDate: Wed, 20 Jun 2018 00:56:38 +0200 x86/intel_rdt: Resctrl files reflect pseudo-locked information Information about resources as well as resource groups are contained in a variety of resctrl files. Now that pseudo-locked regions can be created the files can be updated to present appropriate information to the user. Update the resource group's schemata file to show only the information of the pseudo-locked region. Update the resource group's size file to show the size in bytes of only the pseudo-locked region. Update the bit_usage file to use the letter 'P' for all pseudo-locked regions. Signed-off-by: Reinette Chatre Signed-off-by: Thomas Gleixner Cc: fenghua.yu@intel.com Cc: tony.luck@intel.com Cc: vikas.shivappa@linux.intel.com Cc: gavin.hindman@intel.com Cc: jithu.joseph@intel.com Cc: dave.hansen@intel.com Cc: hpa@zytor.com Link: https://lkml.kernel.org/r/5ae3b3fea500e814f72047572f0cf94c353e9081.1527593971.git.reinette.chatre@intel.com --- arch/x86/kernel/cpu/intel_rdt_ctrlmondata.c | 3 +++ arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 31 +++++++++++++++++++++++------ 2 files changed, 28 insertions(+), 6 deletions(-) diff --git a/arch/x86/kernel/cpu/intel_rdt_ctrlmondata.c b/arch/x86/kernel/cpu/intel_rdt_ctrlmondata.c index 6f4c0002b2c1..af358ca05160 100644 --- a/arch/x86/kernel/cpu/intel_rdt_ctrlmondata.c +++ b/arch/x86/kernel/cpu/intel_rdt_ctrlmondata.c @@ -402,6 +402,9 @@ int rdtgroup_schemata_show(struct kernfs_open_file *of, if (rdtgrp->mode == RDT_MODE_PSEUDO_LOCKSETUP) { for_each_alloc_enabled_rdt_resource(r) seq_printf(s, "%s:uninitialized\n", r->name); + } else if (rdtgrp->mode == RDT_MODE_PSEUDO_LOCKED) { + seq_printf(s, "%s:%d=%x\n", rdtgrp->plr->r->name, + rdtgrp->plr->d->id, rdtgrp->plr->cbm); } else { closid = rdtgrp->closid; for_each_alloc_enabled_rdt_resource(r) { diff --git a/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c b/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c index 3b21aa2cea4f..4e4b64338f9f 100644 --- a/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c +++ b/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c @@ -771,14 +771,16 @@ static int rdt_shareable_bits_show(struct kernfs_open_file *of, * H - currently used by hardware only but available for software use * S - currently used and shareable by software only * E - currently used exclusively by one resource group + * P - currently pseudo-locked by one resource group */ static int rdt_bit_usage_show(struct kernfs_open_file *of, struct seq_file *seq, void *v) { struct rdt_resource *r = of->kn->parent->priv; - u32 sw_shareable, hw_shareable, exclusive; + u32 sw_shareable = 0, hw_shareable = 0; + u32 exclusive = 0, pseudo_locked = 0; struct rdt_domain *dom; - int i, hwb, swb, excl; + int i, hwb, swb, excl, psl; enum rdtgrp_mode mode; bool sep = false; u32 *ctrl; @@ -803,12 +805,15 @@ static int rdt_bit_usage_show(struct kernfs_open_file *of, case RDT_MODE_EXCLUSIVE: exclusive |= *ctrl; break; + case RDT_MODE_PSEUDO_LOCKSETUP: /* - * Temporarily handle pseudo-locking enums - * to silence compile warnings until handling - * added in later patches. + * RDT_MODE_PSEUDO_LOCKSETUP is possible + * here but not included since the CBM + * associated with this CLOSID in this mode + * is not initialized and no task or cpu can be + * assigned this CLOSID. */ - case RDT_MODE_PSEUDO_LOCKSETUP: + break; case RDT_MODE_PSEUDO_LOCKED: case RDT_NUM_MODES: WARN(1, @@ -817,9 +822,11 @@ static int rdt_bit_usage_show(struct kernfs_open_file *of, } } for (i = r->cache.cbm_len - 1; i >= 0; i--) { + pseudo_locked = dom->plr ? dom->plr->cbm : 0; hwb = test_bit(i, (unsigned long *)&hw_shareable); swb = test_bit(i, (unsigned long *)&sw_shareable); excl = test_bit(i, (unsigned long *)&exclusive); + psl = test_bit(i, (unsigned long *)&pseudo_locked); if (hwb && swb) seq_putc(seq, 'X'); else if (hwb && !swb) @@ -828,6 +835,8 @@ static int rdt_bit_usage_show(struct kernfs_open_file *of, seq_putc(seq, 'S'); else if (excl) seq_putc(seq, 'E'); + else if (psl) + seq_putc(seq, 'P'); else /* Unused bits remain */ seq_putc(seq, '0'); } @@ -1147,6 +1156,15 @@ static int rdtgroup_size_show(struct kernfs_open_file *of, return -ENOENT; } + if (rdtgrp->mode == RDT_MODE_PSEUDO_LOCKED) { + seq_printf(s, "%*s:", max_name_width, rdtgrp->plr->r->name); + size = rdtgroup_cbm_to_size(rdtgrp->plr->r, + rdtgrp->plr->d, + rdtgrp->plr->cbm); + seq_printf(s, "%d=%u\n", rdtgrp->plr->d->id, size); + goto out; + } + for_each_alloc_enabled_rdt_resource(r) { seq_printf(s, "%*s:", max_name_width, r->name); list_for_each_entry(d, &r->domains, list) { @@ -1164,6 +1182,7 @@ static int rdtgroup_size_show(struct kernfs_open_file *of, seq_putc(s, '\n'); } +out: rdtgroup_kn_unlock(of->kn); return 0;