From nobody Tue Dec 2 00:45:57 2025 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.11]) (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 AF8C53168EE for ; Mon, 24 Nov 2025 18:54:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.11 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764010487; cv=none; b=oigEp39BF8UEdcyknkOceL13zjNrMv0Swx5aQljmE3Z9iKTDDE4n0e+CwZ0x/I1qpeYibLliRm5LRXXQrU0vOHEtuK6hKluhSpN/Lcvj1q8rcVsHUVpLSibqgMzxP8/yzwEOtb6c4rGZhNnoyx+h6GHO7ba15yagWIfMmlSr4r4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764010487; c=relaxed/simple; bh=2QSZ+iQh8XbZwvpPzBCkKPoQpx6hD8+W+fzq0/XIfY4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=KEOe39j0wQDnudYuKMYBtmK5TR0uTAUR2erGqIVQk38k6ykbeBPuYrcRlfHnTC1ZY9BLLC+XCeaEXhC0FHNKHSFfctNkrbU0Yy+2+yhw6qlW+8wAprvJakvk0n4RC2qNWETllAN9wLyQM2Jiu7MS/OCOxp1cmbSDt/jn3Bq477g= 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=RLpK9VBr; arc=none smtp.client-ip=192.198.163.11 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="RLpK9VBr" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1764010486; x=1795546486; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=2QSZ+iQh8XbZwvpPzBCkKPoQpx6hD8+W+fzq0/XIfY4=; b=RLpK9VBrQTiMg4QsoZ37biB4YqUv7I56lY18ci69/A4LlLy+CpFZp0ry FIu3InHNWMWmaQPN2tKMefOIRwny+5xNAVUG6xgzc9Di70ovUzmeS3lk3 tTHKfy8I62ufepAw5ZloZqlPMvkZSZoiTrJpnpYDuNZzkZudoG5Dd48w0 rhTmhvrgf1S+4Or03L9hGtPNU3J+S2P8Kp/61SrWNNykgpvAUMLJzec+q rn4x52+UnMYrF71rOcnerJElX2iQrUee5IqdgOhGodgjfVJBChag8SvDq pQz366ZnSEtSh31e4hLqHkJ/HCjKq+paTIHJFw1zR2NiWnVPmpIjYx8Mu Q==; X-CSE-ConnectionGUID: kZUm5o5MTYqTLQXMiaxrVQ== X-CSE-MsgGUID: 4rC8RTs3ToCZrmDin6DInw== X-IronPort-AV: E=McAfee;i="6800,10657,11623"; a="76636467" X-IronPort-AV: E=Sophos;i="6.20,223,1758610800"; d="scan'208";a="76636467" Received: from orviesa009.jf.intel.com ([10.64.159.149]) by fmvoesa105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Nov 2025 10:54:22 -0800 X-CSE-ConnectionGUID: DeI8KOmCTU+eMwO041mgVQ== X-CSE-MsgGUID: mmwNsk/vQBGqbooCVTncrg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.20,223,1758610800"; d="scan'208";a="192224947" Received: from rfrazer-mobl3.amr.corp.intel.com (HELO agluck-desk3.home.arpa) ([10.124.222.153]) by orviesa009-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Nov 2025 10:54:22 -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 v14 03/32] x86/resctrl: Refactor domain_remove_cpu_mon() ready for new domain types Date: Mon, 24 Nov 2025 10:53:40 -0800 Message-ID: <20251124185412.24155-4-tony.luck@intel.com> X-Mailer: git-send-email 2.51.1 In-Reply-To: <20251124185412.24155-1-tony.luck@intel.com> References: <20251124185412.24155-1-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 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