From nobody Fri Dec 19 19:00:35 2025 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.13]) (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 4CC2E2DCC13 for ; Thu, 4 Dec 2025 20:54:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.13 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764881658; cv=none; b=JquLouffH+XYtDyyORxZZ4MaF9RdnKw90VAFUiMVRS/7ftP0vWbPqvGkcy+XiuDdwJHknQE0OmhSnVq4iBEoG3T7ckAYRhiRCZpMfnDgtkQ+JFKsriqDWVsDGvZ86EPQEKt0cdqeDXzrXtPW/6c5lo08zRQSh3ufIKKD6LNx/7c= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764881658; c=relaxed/simple; bh=4TavaMTu7axZkv0Du315ayr07cIT7myhftmXcK2c5+g=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Q9Gg27kYZu3kvWE8VSeJMl0xHruG9vTpKEjsuUwSOq13Rh+WG8jfwRoiaQmjLNGV+uAmUDYkTAE59IxjRaSLZhKEQEuB35ym8aX+4ZbEcNlgLjJXnQa7xEnAVka3wt2yiK/e5qzA9RAMHrl4UM/echw7TSe42SImE7UpZf+R1rQ= 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=JrRlLjvj; arc=none smtp.client-ip=192.198.163.13 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="JrRlLjvj" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1764881656; x=1796417656; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=4TavaMTu7axZkv0Du315ayr07cIT7myhftmXcK2c5+g=; b=JrRlLjvjRmj7McaUKYnsgdf0RLm1c4c+Gk7rhlGVR2z8bAUXZ9tpjjA5 ShYFZKyoW/XRbR//xQjZ0h+ifdHsh5UIYkB8nzcewUxAopKWCH51v2Lr5 6KqE6BBHH4vobMST8Ha0lVvN6Uis/CFJu8YqGaGJtYoO/dNwV0ai2+iK7 hBlxXamIS0j9sAcRO6HpfnYMRj4ecBd0wXMO7LpZeSWkSRkElOQNVHLCY 0urHC6g6n7bdm+eXHWqy3tXI78ygaK+fQZMgK4klt2exewc+UurlGmILH 6xAeu+vLoxOhKaScqTJfk72zD1LoLO31LV9oYkRoQ5JkP+8fAqhe1Cl9t g==; X-CSE-ConnectionGUID: atu3tNFkQqqPqQoLl7t51w== X-CSE-MsgGUID: 7l6D6p4OTyebsT7Gtgsrug== X-IronPort-AV: E=McAfee;i="6800,10657,11632"; a="69510861" X-IronPort-AV: E=Sophos;i="6.20,250,1758610800"; d="scan'208";a="69510861" Received: from orviesa002.jf.intel.com ([10.64.159.142]) by fmvoesa107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Dec 2025 12:54:14 -0800 X-CSE-ConnectionGUID: xQ4AKNIgQ8O9pDYBhSGpxw== X-CSE-MsgGUID: WpLCCjs2SHij0IA6xps7TQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.20,250,1758610800"; d="scan'208";a="225752724" Received: from mgerlach-mobl1.amr.corp.intel.com (HELO agluck-desk3.intel.com) ([10.124.220.165]) by orviesa002-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Dec 2025 12:54:13 -0800 From: Tony Luck To: Fenghua Yu , Reinette Chatre , Maciej Wieczor-Retman , Peter Newman , James Morse , Babu Moger , Drew Fustini , Dave Martin , Chen Yu Cc: x86@kernel.org, linux-kernel@vger.kernel.org, patches@lists.linux.dev, Tony Luck Subject: [PATCH v15 03/32] x86/resctrl: Refactor domain_remove_cpu_mon() ready for new domain types Date: Thu, 4 Dec 2025 12:53:33 -0800 Message-ID: <20251204205404.12763-4-tony.luck@intel.com> X-Mailer: git-send-email 2.51.1 In-Reply-To: <20251204205404.12763-1-tony.luck@intel.com> References: <20251204205404.12763-1-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" New telemetry events will be associated with a new package scoped resource = with a new domain structure. Refactor domain_remove_cpu_mon() so all the L3 domain processing is separate the general domain action of clearing the CPU bit in the mask. Signed-off-by: Tony Luck Reviewed-by: Reinette Chatre --- arch/x86/kernel/cpu/resctrl/core.c | 27 +++++++++++++++++---------- 1 file changed, 17 insertions(+), 10 deletions(-) diff --git a/arch/x86/kernel/cpu/resctrl/core.c b/arch/x86/kernel/cpu/resct= rl/core.c index 2a568b316711..49b133e847d4 100644 --- a/arch/x86/kernel/cpu/resctrl/core.c +++ b/arch/x86/kernel/cpu/resctrl/core.c @@ -631,9 +631,7 @@ static void domain_remove_cpu_ctrl(int cpu, struct rdt_= resource *r) static void domain_remove_cpu_mon(int cpu, struct rdt_resource *r) { int id =3D get_domain_id_from_scope(cpu, r->mon_scope); - struct rdt_hw_mon_domain *hw_dom; struct rdt_domain_hdr *hdr; - struct rdt_mon_domain *d; =20 lockdep_assert_held(&domain_list_lock); =20 @@ -650,20 +648,29 @@ static void domain_remove_cpu_mon(int cpu, struct rdt= _resource *r) return; } =20 - if (!domain_header_is_valid(hdr, RESCTRL_MON_DOMAIN, r->rid)) + cpumask_clear_cpu(cpu, &hdr->cpu_mask); + if (!cpumask_empty(&hdr->cpu_mask)) return; =20 - d =3D container_of(hdr, struct rdt_mon_domain, hdr); - hw_dom =3D resctrl_to_arch_mon_dom(d); + switch (r->rid) { + case RDT_RESOURCE_L3: { + struct rdt_hw_mon_domain *hw_dom; + struct rdt_mon_domain *d; =20 - cpumask_clear_cpu(cpu, &d->hdr.cpu_mask); - if (cpumask_empty(&d->hdr.cpu_mask)) { + if (!domain_header_is_valid(hdr, RESCTRL_MON_DOMAIN, RDT_RESOURCE_L3)) + return; + + d =3D container_of(hdr, struct rdt_mon_domain, hdr); + hw_dom =3D resctrl_to_arch_mon_dom(d); resctrl_offline_mon_domain(r, d); - list_del_rcu(&d->hdr.list); + list_del_rcu(&hdr->list); synchronize_rcu(); mon_domain_free(hw_dom); - - return; + break; + } + default: + pr_warn_once("Unknown resource rid=3D%d\n", r->rid); + break; } } =20 --=20 2.51.1