From nobody Mon Feb 9 19:31:36 2026 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.20]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DD478233713 for ; Fri, 21 Mar 2025 23:16:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.20 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742598986; cv=none; b=l4mf3eOfTq19yb1VTj70ZV9UiU+zHwGrp44oZbyV2cYH+gzvC1ErjV8jaXEjg3NKp8ihu8iYWzwWk8AMMG4VhTvCK+fiRYGluIYyXeSYsobAN5g7keH3gyUURll+lrOlgFbWte4Wpzedd4KFhyZMNi3VRxWDvf9/yetfoQA6/aU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742598986; c=relaxed/simple; bh=Tevqw1RmArPpC2Ze0nf0CBxzpci8OzxKGJJTa6CwTvc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=hYJ40YNiNMQdbc5a8HA/MYH3T3Yv+mmMPVW8H4G+Y6dhZDUYdK7Gc4grfwaLvuU+6mGZ5fRaEtl9UAB1YMBGsfV9n+Zc8vK5arEva4vQ+/+Li9qz4f6py6tzjbhAR9KDS1mu8xG6WQRugQUyB/pLnvrFsTW1ofgLGaazMSSBddQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=fhTq9hLP; arc=none smtp.client-ip=198.175.65.20 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="fhTq9hLP" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1742598985; x=1774134985; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=Tevqw1RmArPpC2Ze0nf0CBxzpci8OzxKGJJTa6CwTvc=; b=fhTq9hLPukMPc2fT80F6B+9ohf9dNBNBTdzPvOFjw03t1ofdYsX8QpZZ zTDWSLjY9qaRN47KSSsqEFamL/G7Pjeq1l3myZYxwdCqfOkF4x1Dj9j9N 3cArl061mrdYfZ9jMPozQpebKVu23V7lrvZRNzfYG3Yd87HcFc6VE/343 TGJobl2Yola/XgH1+ctFrj7bbiBXMxNtVuB9m8IIz+UZ44hXoSsd1xjkk g3TZwbphuIK+RRWUqbPNB4O0P7yJ+5XmWvY9qpjDrmWbFfYYdMALrG3UB ODEN8ZUr99ClbDZ60hg5Iu9ZplHHCdzhqxAW62KGZPN7VTS4RmZP0ytpr Q==; X-CSE-ConnectionGUID: rLMoVxroRBWsnU72DG+XWA== X-CSE-MsgGUID: yhKNQvBIRzu4cwzNRu/rSg== X-IronPort-AV: E=McAfee;i="6700,10204,11380"; a="43604595" X-IronPort-AV: E=Sophos;i="6.14,266,1736841600"; d="scan'208";a="43604595" Received: from orviesa003.jf.intel.com ([10.64.159.143]) by orvoesa112.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Mar 2025 16:16:22 -0700 X-CSE-ConnectionGUID: v4xcqgwoTVKEay4ZRmficw== X-CSE-MsgGUID: 27922Y0nQfierbmeQ9yyzw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.14,266,1736841600"; d="scan'208";a="128354312" Received: from agluck-desk3.sc.intel.com ([172.25.222.70]) by ORVIESA003-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Mar 2025 16:16:22 -0700 From: Tony Luck To: Fenghua Yu , Reinette Chatre , Maciej Wieczor-Retman , Peter Newman , James Morse , Babu Moger , Drew Fustini , Dave Martin Cc: linux-kernel@vger.kernel.org, patches@lists.linux.dev, Tony Luck Subject: [PATCH v2 08/16] x86/resctrl: Add Intel PMT domain specific code Date: Fri, 21 Mar 2025 16:15:58 -0700 Message-ID: <20250321231609.57418-9-tony.luck@intel.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250321231609.57418-1-tony.luck@intel.com> References: <20250321231609.57418-1-tony.luck@intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Domain specific initialization and tear down. Very simple as there are no domain specific elements that need to be allocated or initiailazed. Just the domain itself. Signed-off-by: Tony Luck --- arch/x86/kernel/cpu/resctrl/core.c | 32 ++++++++++++++++++++++++++++++ fs/resctrl/rdtgroup.c | 11 ++++++++-- 2 files changed, 41 insertions(+), 2 deletions(-) diff --git a/arch/x86/kernel/cpu/resctrl/core.c b/arch/x86/kernel/cpu/resct= rl/core.c index 1ab0f5eec244..2adf40d8de32 100644 --- a/arch/x86/kernel/cpu/resctrl/core.c +++ b/arch/x86/kernel/cpu/resctrl/core.c @@ -541,6 +541,29 @@ static void setup_l3_mon_domain(int cpu, int id, struc= t rdt_resource *r, struct } } =20 +static void setup_intel_aet_mon_domain(int cpu, int id, struct rdt_resourc= e *r, + struct list_head *add_pos) +{ + struct rdt_core_mon_domain *d; + int err; + + d =3D kzalloc_node(sizeof(*d), GFP_KERNEL, cpu_to_node(cpu)); + if (!d) + return; + + d->hdr.id =3D id; + d->hdr.type =3D RESCTRL_MON_DOMAIN; + cpumask_set_cpu(cpu, &d->hdr.cpu_mask); + list_add_tail_rcu(&d->hdr.list, add_pos); + + err =3D resctrl_online_mon_domain(r, &d->hdr); + if (err) { + list_del_rcu(&d->hdr.list); + synchronize_rcu(); + kfree(d); + } +} + static void domain_add_cpu_mon(int cpu, struct rdt_resource *r) { int id =3D get_domain_id_from_scope(cpu, r->mon_scope); @@ -565,6 +588,9 @@ static void domain_add_cpu_mon(int cpu, struct rdt_reso= urce *r) case RDT_RESOURCE_L3: setup_l3_mon_domain(cpu, id, r, add_pos); break; + case RDT_RESOURCE_INTEL_AET: + setup_intel_aet_mon_domain(cpu, id, r, add_pos); + break; default: WARN_ON_ONCE(1); } @@ -661,6 +687,12 @@ static void domain_remove_cpu_mon(int cpu, struct rdt_= resource *r) synchronize_rcu(); mon_domain_free(hw_dom); break; + case RDT_RESOURCE_INTEL_AET: + resctrl_offline_mon_domain(r, d); + list_del_rcu(&hdr->list); + synchronize_rcu(); + kfree(container_of(hdr, struct rdt_core_mon_domain, hdr)); + break; } } =20 diff --git a/fs/resctrl/rdtgroup.c b/fs/resctrl/rdtgroup.c index 4833dfa08ce3..d3919642aa9b 100644 --- a/fs/resctrl/rdtgroup.c +++ b/fs/resctrl/rdtgroup.c @@ -4077,6 +4077,9 @@ void resctrl_offline_mon_domain(struct rdt_resource *= r, struct rdt_mon_domain *d if (resctrl_mounted && resctrl_arch_mon_capable()) rmdir_mondata_subdir_allrdtgrp(r, &d->hdr); =20 + if (r->rid =3D=3D RDT_RESOURCE_INTEL_AET) + goto done; + if (resctrl_is_mbm_enabled()) cancel_delayed_work(&d->mbm_over); if (resctrl_arch_is_llc_occupancy_enabled() && has_busy_rmid(d)) { @@ -4093,7 +4096,7 @@ void resctrl_offline_mon_domain(struct rdt_resource *= r, struct rdt_mon_domain *d } =20 domain_destroy_mon_state(d); - +done: mutex_unlock(&rdtgroup_mutex); } =20 @@ -4160,11 +4163,14 @@ int resctrl_online_ctrl_domain(struct rdt_resource = *r, struct rdt_ctrl_domain *d int resctrl_online_mon_domain(struct rdt_resource *r, struct rdt_domain_hd= r *hdr) { struct rdt_mon_domain *d; - int err; + int err =3D 0; =20 d =3D container_of(hdr, struct rdt_mon_domain, hdr); mutex_lock(&rdtgroup_mutex); =20 + if (r->rid =3D=3D RDT_RESOURCE_INTEL_AET) + goto do_mkdir; + err =3D domain_setup_mon_state(r, d); if (err) goto out_unlock; @@ -4178,6 +4184,7 @@ int resctrl_online_mon_domain(struct rdt_resource *r,= struct rdt_domain_hdr *hdr if (resctrl_arch_is_llc_occupancy_enabled()) INIT_DELAYED_WORK(&d->cqm_limbo, cqm_handle_limbo); =20 +do_mkdir: /* * If the filesystem is not mounted then only the default resource group * exists. Creation of its directories is deferred until mount time --=20 2.48.1