From nobody Fri Dec 19 19:01:19 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 98F622FF160 for ; Mon, 13 Oct 2025 22:34:01 +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=1760394843; cv=none; b=YI7+wHVXdHO7Q1eu3ErOySJvhdFac3j2INyG9J2KU1ncO2PVbIf/YcdqsPzk7cUNgeUlqb5KYRVHOVfBisxsqKGZT1Q61kIODF791wLcdl4QX2yIqQ0nDLTeUWhc7GG97f8steI1ZIqQjT8z8RaBQtXGwkKg6G0Wtq+5HUXBR/s= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760394843; c=relaxed/simple; bh=CXSkuQZDd3X/TQ8dxx/SG82mfLvO4sV6yEaaCfxbpQo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=tRZhoEfM0KHrHip9pWxPY070FVrigaiPTbatflDHmbe1QFQ9wt4Adpf8v8L84vfHr2kSn0yBEtg1+sTtrbUuH2be4G+hrYfEIVjaRQn3AwCBt72IxYFnOBKSo57pq7dkLQSDBvCd2hHp4tnF4RFGPp6F/eMOsMCJPJVuc4fCRKA= 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=jH2JQvdi; 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=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="jH2JQvdi" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1760394842; x=1791930842; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=CXSkuQZDd3X/TQ8dxx/SG82mfLvO4sV6yEaaCfxbpQo=; b=jH2JQvdiY4vq9dpyofjmaON1e9J8zjvD3f0QeyjlyKUbmkT2QXXYe6fE G0tvYGGc+4PIv8g8bOJ2PE2lJOyqKTfQWCaBqlpwjbLml2oZgVrE9qItI HaIa4bnYQEP7sAt1yxMz8/90MEx4x1B2U2XyNt+UWtVGPo1KBUU2WfDFg PPu6PgpTZ+VZmj+BfWvEHxrddbrdFfqvKYqoiyqh23lNT+rnnwwMOTLLq HIdJNVLniMVn9qbDmSZYOqhzunS4PUnB3fqV38gV7eD8cuovlWpxfYouJ 9q3YKTZUWcjSq0835lKH1h7wQGefDuK/siBsyJTAtmd2wBSlEG9JfnlBH Q==; X-CSE-ConnectionGUID: M44e6U1bRBSl9lHIc2TqrA== X-CSE-MsgGUID: BMQsp3fkRguOAcbdKFhv6w== X-IronPort-AV: E=McAfee;i="6800,10657,11581"; a="85168745" X-IronPort-AV: E=Sophos;i="6.19,226,1754982000"; d="scan'208";a="85168745" Received: from fmviesa008.fm.intel.com ([10.60.135.148]) by orvoesa101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Oct 2025 15:33:59 -0700 X-CSE-ConnectionGUID: dGIzacfhRA2VaiMcfktnLw== X-CSE-MsgGUID: HFAdzW2lRMOKw/KFd1y/AQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,226,1754982000"; d="scan'208";a="182145251" Received: from sramkris-mobl1.amr.corp.intel.com (HELO agluck-desk3.intel.com) ([10.124.222.79]) by fmviesa008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Oct 2025 15:33:59 -0700 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 v12 03/31] x86/resctrl: Refactor domain_remove_cpu_mon() ready for new domain types Date: Mon, 13 Oct 2025 15:33:17 -0700 Message-ID: <20251013223348.103390-4-tony.luck@intel.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251013223348.103390-1-tony.luck@intel.com> References: <20251013223348.103390-1-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 new domain structures. Refactor domain_remove_cpu_mon() so all the L3 domain processing is separate from general domain actions 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 d422ae3b7ed6..c7bfaa391e9f 100644 --- a/arch/x86/kernel/cpu/resctrl/core.c +++ b/arch/x86/kernel/cpu/resctrl/core.c @@ -626,9 +626,7 @@ 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 @@ -645,20 +643,29 @@ 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 2.51.0