From nobody Sat Sep 27 20:24:27 2025 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.17]) (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 490872836A6 for ; Fri, 12 Sep 2025 22:11:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.17 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757715064; cv=none; b=XUrdOht0BlAUIpgGvmoFQhXq7+m7RV/XfMb1QAwOme9n4CpewOUXDrambSigLxBwW0tq+iqsJOkN6/o+iutqmK99axrC0MIE6MsxErfL1p4zoMLtvjt8qC+R9hifHqyXP0kqLlQwvjorxl9ElnE+DXDwlgy2DLN8dNofcZaWsm4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757715064; c=relaxed/simple; bh=W3l2LROmj/aidoZ9hHGzxBQReC1zNnYeaPcvHDs85co=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=mHzNI/uDJzteXdE2itXQMmu+ZVOyc2h/6rM2+OIjRlsyLMYmR8q3l6l0/MP19ed0GVUm/VWOQR0jYqrrcnj+uVIO1MYGALbeJoEqShuSQPVqW+ujMVUfq/jPp/gvSZ4Kn9xtomUiXKk7MlwAXQtl1+Z/G82XPn4zQp/9aRm8Dz4= 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=GujtJxk6; arc=none smtp.client-ip=192.198.163.17 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="GujtJxk6" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1757715063; x=1789251063; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=W3l2LROmj/aidoZ9hHGzxBQReC1zNnYeaPcvHDs85co=; b=GujtJxk6xAYL+DRdw8nqW/9w2XOKUrs8vtDZBrsN3cfQV1s8ZmZenqeC 1xQWAHwJ6Kp4FW4U3KfGPimEbYUJu8mqjvCbItyek+gKo4Qlk6KU6SDGe GDKemKs7M5Ie58w24NaKQYs82kWxS13ym7Tus3ZDXIS/KayOAe/XPKHu/ nwq2qPP971Q8gqAVAekjXxQ1Q8mxhjH0iRW+GcKQqTBN8CZZsEwZLE6t5 1cT4DvkGpiHF2uLscpk7Kqp6zmazawsGolhwLgHnWeUlvPGNdC1s7oa2u 87tnMQOvIfQkcMf1Anyd4zeVfciovFRGB00EGY/hPH7WJ4USleYvbP7Pf w==; X-CSE-ConnectionGUID: dhnZRRt0QV2i7W1XfIj7Xg== X-CSE-MsgGUID: 2JoJxtsERFGIL2lPdWgq4w== X-IronPort-AV: E=McAfee;i="6800,10657,11551"; a="60002627" X-IronPort-AV: E=Sophos;i="6.18,260,1751266800"; d="scan'208";a="60002627" Received: from orviesa005.jf.intel.com ([10.64.159.145]) by fmvoesa111.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Sep 2025 15:11:01 -0700 X-CSE-ConnectionGUID: vcrrK3YXQoqhkuteEBI+4w== X-CSE-MsgGUID: 7mMrThukSpmA3UNg62MPxA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.18,260,1751266800"; d="scan'208";a="179265126" Received: from smoehrl-linux.amr.corp.intel.com (HELO agluck-desk3.intel.com) ([10.124.221.49]) by orviesa005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Sep 2025 15:11:02 -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 v10 03/28] x86,fs/resctrl: Refactor domain_remove_cpu_mon() ready for new domain types Date: Fri, 12 Sep 2025 15:10:24 -0700 Message-ID: <20250912221053.11349-4-tony.luck@intel.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20250912221053.11349-1-tony.luck@intel.com> References: <20250912221053.11349-1-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" All monitoring events are associated with the L3 resource. The RDT_RESOURCE_L3 resource carries a lot of state in the domain structures which needs to be dealt with when a domain is taken offline by removing the last CPU in the domain. 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 processing is separate from general actions of clearing the CPU bit in the mask and removing sub-directories from the mon_data directory. Signed-off-by: Tony Luck --- arch/x86/kernel/cpu/resctrl/core.c | 21 +++++++++++++-------- 1 file changed, 13 insertions(+), 8 deletions(-) diff --git a/arch/x86/kernel/cpu/resctrl/core.c b/arch/x86/kernel/cpu/resct= rl/core.c index 055df4d406d0..b874cbe0218b 100644 --- a/arch/x86/kernel/cpu/resctrl/core.c +++ b/arch/x86/kernel/cpu/resctrl/core.c @@ -648,20 +648,25 @@ 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: + if (!domain_header_is_valid(hdr, RESCTRL_MON_DOMAIN, RDT_RESOURCE_L3)) + return; =20 - cpumask_clear_cpu(cpu, &d->hdr.cpu_mask); - if (cpumask_empty(&d->hdr.cpu_mask)) { + 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