From nobody Fri Feb 13 00:28:31 2026 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.8]) (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 27250188CAE for ; Wed, 5 Jun 2024 16:14:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.8 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717604082; cv=none; b=lAo3hFbTLRTPP/USxVyGsvxqgU+qQbHZ86+GRzfahmTmzi+ELmkRxxeb9RacnDbJTFY23YyswuHmNxPXcGNAyRU/LQpgCuVUkUpSlRiHrnokUyXkLorqNruN2g7jGC1sGbalXNMThtsaIBTpM1TqFBtVHbRHvrtWjqnynJv5wjY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717604082; c=relaxed/simple; bh=mtXhJIqFcxEurjVvwCm6Vo/pYjEoRRPxXTYeDGZw23k=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=fgKKEPg5c0LuiD4LO6CchFr1fE9tunOHay9HgMzzLNrK8j4ukEmdW95jVYPyKDvABPO7Vmtwqc/h5miOJACfE12TeobTmUvh6HDpGDx0eUSKEbEcWqHpVgdX/ouCErRXLJjMyMfuXOkNVIXo3ohuDE4IP0r8BRP+qQVxL8C0gzI= 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=LiyqIBvQ; arc=none smtp.client-ip=192.198.163.8 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="LiyqIBvQ" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1717604081; x=1749140081; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=mtXhJIqFcxEurjVvwCm6Vo/pYjEoRRPxXTYeDGZw23k=; b=LiyqIBvQkX4JvoGSHg99JRD5qJDQ8uwtxfnL/lmnA+oDz63O0aYNMmqE 4jlUpiYvTHn9yoCcsZ9hEBFezg1jrB20uVB2uVvnNwiggrbOBD4bGfkmD B0SV/6Fjy5FXlbWKrhIAVzIDOLRUN3Y6WIpsG0vM5N/Lao/3PQ48tf+G/ K1IigpDR2RPgADF5JqCcvXkgCFCbjTUkHIHZ6aVgocQsZOTtWfnviB/V6 3owGh+EtWz6Iy11onmWfT3QDw46RPhmC1sGYxuiP1ktcrpbakovTfchyB 49YUxHEwnS4Pr+TDHGYzwMJ6o11NxyAK7hZ3tg1iXDvVUHYVJ2ua4tFRa A==; X-CSE-ConnectionGUID: kcvSYQfgSGGVB6IndcXSDw== X-CSE-MsgGUID: wYLpIuQ7QWSVf738/Ti/5A== X-IronPort-AV: E=McAfee;i="6600,9927,11094"; a="31772306" X-IronPort-AV: E=Sophos;i="6.08,217,1712646000"; d="scan'208";a="31772306" Received: from orviesa005.jf.intel.com ([10.64.159.145]) by fmvoesa102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Jun 2024 09:14:37 -0700 X-CSE-ConnectionGUID: rT5y1NMdTs2EDzChbX7i+Q== X-CSE-MsgGUID: H0F+atmnTIOAf2GYbyjy8A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.08,217,1712646000"; d="scan'208";a="42581905" Received: from agluck-desk3.sc.intel.com ([172.25.222.70]) by orviesa005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Jun 2024 09:14:37 -0700 From: Tony Luck To: Borislav Petkov Cc: x86@kernel.org, Fenghua Yu , Reinette Chatre , Maciej Wieczor-Retman , Peter Newman , James Morse , Babu Moger , Drew Fustini , Dave Martin , linux-kernel@vger.kernel.org, patches@lists.linux.dev, Tony Luck Subject: [PATCH v2 3/3] x86/resctrl: Replace open code cacheinfo search in rdtgroup_cbm_to_size() Date: Wed, 5 Jun 2024 09:14:27 -0700 Message-ID: <20240605161427.312994-4-tony.luck@intel.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240605161427.312994-1-tony.luck@intel.com> References: <20240605161427.312994-1-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" Use get_cpu_cacheinfo_level() instead of open coded search. Signed-off-by: Tony Luck Reviewed-by: Reinette Chatre --- arch/x86/kernel/cpu/resctrl/rdtgroup.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/r= esctrl/rdtgroup.c index 02f213f1c51c..cb68a121dabb 100644 --- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c +++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c @@ -1450,18 +1450,14 @@ static ssize_t rdtgroup_mode_write(struct kernfs_op= en_file *of, unsigned int rdtgroup_cbm_to_size(struct rdt_resource *r, struct rdt_domain *d, unsigned long cbm) { - struct cpu_cacheinfo *ci; unsigned int size =3D 0; - int num_b, i; + struct cacheinfo *ci; + int num_b; =20 num_b =3D bitmap_weight(&cbm, r->cache.cbm_len); - ci =3D get_cpu_cacheinfo(cpumask_any(&d->cpu_mask)); - for (i =3D 0; i < ci->num_leaves; i++) { - if (ci->info_list[i].level =3D=3D r->cache_level) { - size =3D ci->info_list[i].size / r->cache.cbm_len * num_b; - break; - } - } + ci =3D get_cpu_cacheinfo_level(cpumask_any(&d->cpu_mask), r->cache_level); + if (ci) + size =3D ci->size / r->cache.cbm_len * num_b; =20 return size; } --=20 2.45.0