From nobody Thu Dec 18 03:20:35 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 876892E1EEE for ; Wed, 10 Dec 2025 23:14:33 +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=1765408476; cv=none; b=uAJFATb+rjlCQed0TMOGYdJDjTANRjXAMDodDjJ+UYXhy4gJZZoOekk9FtwPGjRhCRj8OdhtGLLrSrMTNlwbxF1Q8b4zzvuw5P9VAN83HRYTJm9ozr1onp8x/jAIOiO+JEEUhe/oHiU3ybv+gnoLtVbB5RMwfACBq34cNIxEA5k= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765408476; c=relaxed/simple; bh=4TavaMTu7axZkv0Du315ayr07cIT7myhftmXcK2c5+g=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=V/ZnQB4cV9rZ0y9gvPukx2EKPIf2A1IEJJjPhl6FS0GRUuD/XwDYpK9FsTsX7+1R+jfiJvqAlWJ42wSJEWk/Eo1Aq2RsaHgVy/4nTf76EQFnoKPojzvqRnLbXZ9uxPE9c8Atjj4ofNmG052FnCKNAGCpA2t/B2kjZ3Fuis2Zn7c= 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=fOjKemVm; 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="fOjKemVm" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1765408474; x=1796944474; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=4TavaMTu7axZkv0Du315ayr07cIT7myhftmXcK2c5+g=; b=fOjKemVmlzLok1YIRCa2frR8Sxi26eOLzxVmpVM31VTSlKRjVS9ITaK/ 26UO6OQcxsP87V9nXjvL2GBevaeovczgkLVWSwsNh12tsDhiCp3JU59FW p7rKMqh/Bk83IdDZh6LJ5Kp6Prm7h8CG/c25paE1OKfbOZw5ro6XNKS+l 1GE689V1uMsjygUBejdOhHx0ILAfO3KL/41WAi6xynP0i1xtoFc2tsAft RKj6+U5yen/Y9YB0etb2bvBv7kOhjdmwvyj9i+XWXhcOUhDd3/vgaH2Yp SgHY3mXQ0xunMoveBqt+BhcjxHRgtNXhuB7tQk6OTvhRDpTROr7cKFYSz w==; X-CSE-ConnectionGUID: 8B9NFPsXRECxex3gwHJf6A== X-CSE-MsgGUID: W/UY+LTGSZ20PEpl/dhzMA== X-IronPort-AV: E=McAfee;i="6800,10657,11638"; a="69973493" X-IronPort-AV: E=Sophos;i="6.20,265,1758610800"; d="scan'208";a="69973493" Received: from orviesa002.jf.intel.com ([10.64.159.142]) by fmvoesa107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Dec 2025 15:14:25 -0800 X-CSE-ConnectionGUID: uZUUDIQEQNOYa8bODt0B0g== X-CSE-MsgGUID: Q80ZxPAuQN6VcvGKdMfc+A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.20,265,1758610800"; d="scan'208";a="227297034" Received: from daliomra-mobl3.amr.corp.intel.com (HELO agluck-desk3.intel.com) ([10.124.221.254]) by orviesa002-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Dec 2025 15:14:24 -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 v16 03/32] x86/resctrl: Refactor domain_remove_cpu_mon() ready for new domain types Date: Wed, 10 Dec 2025 15:13:42 -0800 Message-ID: <20251210231413.59102-4-tony.luck@intel.com> X-Mailer: git-send-email 2.51.1 In-Reply-To: <20251210231413.59102-1-tony.luck@intel.com> References: <20251210231413.59102-1-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