From nobody Fri Dec 19 03:44:35 2025 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.9]) (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 0F71018AE3 for ; Wed, 17 Dec 2025 17:21:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.9 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765992104; cv=none; b=qItia40/gLeSl60xTsfjH4C1C3J/tTslXciESC6/kT105LKPDXIS9fCbgmPjgZNt5MZK6o6O93Gs7r49nUY6xrZqhNDPeJvpEMj6O6u71fUv/Ui2KzbFCpYZklsJpdIchiUkK8mKjSUM0wSopkyt/TsS459bvcIIS22z1kk+gQM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765992104; c=relaxed/simple; bh=kQPIK+tN99kjei48Dlx/z5BxBZhnT1O2fsz9Q6iNaBQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=L4zkVDtXX4bOaecbFBVLixy0xyK3RQ8JpGhk/kIRkCNWqetaahvUp3W+fC9D0A6AkBONXZ6VvPIncR+9AtKyLzDZ2PfhbmZaCir/AMx5G5tynXglCjBK360rx+uh9PVMtWt2Y+EnfoX8/th6pH1OanxFMhg6pod4imkR7uljU2s= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=fail smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=ZMpYAP0x; arc=none smtp.client-ip=198.175.65.9 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=fail 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="ZMpYAP0x" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1765992100; x=1797528100; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=kQPIK+tN99kjei48Dlx/z5BxBZhnT1O2fsz9Q6iNaBQ=; b=ZMpYAP0x0gFvtR0Vrt/v9c8Az52H/rnuuMdxif/uWe3SRPCFNeMYHlvG V7DdbsRsJXM9/l2daDQ/1L2keF1GDmSmB7gWjWNqmeESPZ8HO6RzAkVif bVl9p1Ufy+ouEHcmcVuad3/LsEsVxJodyC/bMj5ZVSJ/iF2Yw1OPDHxBy gUqYVyCFhInyC9FvBgnysiJ1qxlPZdkqHUn/iJicooxQtskKEJ29V6IKy Y9R9mR4rY5TFqvvvLfMTYYZIqTVzfbNxz5FIK/m7W1eltirOcyQNQWEPx OHdbQU5GIbA2AJzpEroPYDPdW2tWxs7HZ7PL0pQ77P817IWmQc0eI4gPD g==; X-CSE-ConnectionGUID: tNSqGvGZRA6loq7IgvVFRQ== X-CSE-MsgGUID: gGrW+rrBTvG5bYVSXnPdaA== X-IronPort-AV: E=McAfee;i="6800,10657,11645"; a="90594631" X-IronPort-AV: E=Sophos;i="6.21,156,1763452800"; d="scan'208";a="90594631" Received: from fmviesa002.fm.intel.com ([10.60.135.142]) by orvoesa101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Dec 2025 09:21:32 -0800 X-CSE-ConnectionGUID: JEVW83isSb+LjxBnGTlgMQ== X-CSE-MsgGUID: T/sQ0hKTRsijg3ZoYbMRWA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,156,1763452800"; d="scan'208";a="221748155" Received: from pgcooper-mobl3.ger.corp.intel.com (HELO agluck-desk3.home.arpa) ([10.124.223.131]) by fmviesa002-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Dec 2025 09:21:31 -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 v17 03/32] x86/resctrl: Refactor domain_remove_cpu_mon() ready for new domain types Date: Wed, 17 Dec 2025 09:20:50 -0800 Message-ID: <20251217172121.12030-4-tony.luck@intel.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20251217172121.12030-1-tony.luck@intel.com> References: <20251217172121.12030-1-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 2.52.0