From nobody Sun Feb 8 12:19:08 2026 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.12]) (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 97C1B2EE5F4 for ; Wed, 29 Oct 2025 16:21:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.12 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761754889; cv=none; b=Y35aelBSImRcPmAQiN2FypV4Zm4yFWrvHpi5QSGqelaq1tGyjQ4KyjmgX3YPltUcyTOtYs8Nm93tRunzKQ45JCPLRd0UvgD3Y7USn9XK33+yQCU/jQV2oszaeiq4nnRXWHH9Q9YlSspvXbsEbQQmq+MzNb+ScZfL+Aod3AOryZM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761754889; c=relaxed/simple; bh=9Lb7jWBMmJdZuko7jvibgwX+fDcSvQ7E+lwTn2rHF/8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=tccuhfElsKUh4P6fM3vYDJGwPEkP5QmsQtAVQjjYw+SOlwIyi7VorGdKMrLhIFRIBA5tPjNZF4eYD6sjBsih9Z+ixmYxa6r2Xc0QMSO3lPwBlOLPUcWXLP+6Mj06/OBH6ZwNRHUyaue1kAeLsa67NWCe7HpKk3oIu70iFLI5XkQ= 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=JemcZXYa; arc=none smtp.client-ip=198.175.65.12 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="JemcZXYa" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1761754887; x=1793290887; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=9Lb7jWBMmJdZuko7jvibgwX+fDcSvQ7E+lwTn2rHF/8=; b=JemcZXYafABjs8AcMK0NQjemPje0cl3Cgg11yZD4E9F2ruZ7xWM5ZQRt ysi1ozVBJQVrKT1+OveTh3GfTcPa1OCSNlYOCuCDpU4QqwbL/6NVtw5Kn O+zGPFqMfbS4ZcOQgtcTnd3J82ufguvzgu6gapfTn2sRSXPYUV7xL6QaZ LU0GD2op6RshMNT6khIaEPpaDvdr/s0Dv1kyyygnHZjQM9kRYM0AWouOj dZJAi3KufryEYRzGyJRpBfdpHTN7QhMQLeDhljZ0VQtcHmKQ5a5kaOEE8 ti11IUezD/6BbEeMMqWSkeiemw6YE9H0vslF3xTxprfkJLZulYQDhobHD w==; X-CSE-ConnectionGUID: D4vngExUTIeuqNZFT1Q3Ew== X-CSE-MsgGUID: H9jZ9kvQQWulXa3y9m4L0w== X-IronPort-AV: E=McAfee;i="6800,10657,11597"; a="75330992" X-IronPort-AV: E=Sophos;i="6.19,264,1754982000"; d="scan'208";a="75330992" Received: from orviesa006.jf.intel.com ([10.64.159.146]) by orvoesa104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Oct 2025 09:21:25 -0700 X-CSE-ConnectionGUID: 2sSGvrU1TPeyO4CYMgZioA== X-CSE-MsgGUID: XY2v1OCBSTqfEEj1HAJisg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,264,1754982000"; d="scan'208";a="184901304" Received: from mgerlach-mobl1.amr.corp.intel.com (HELO agluck-desk3.home.arpa) ([10.124.223.146]) by orviesa006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Oct 2025 09:21:25 -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 v13 03/32] x86/resctrl: Refactor domain_remove_cpu_mon() ready for new domain types Date: Wed, 29 Oct 2025 09:20:46 -0700 Message-ID: <20251029162118.40604-4-tony.luck@intel.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251029162118.40604-1-tony.luck@intel.com> References: <20251029162118.40604-1-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