From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.18]) (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 2DFC617DE1D for ; Fri, 31 May 2024 19:57:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717185458; cv=none; b=mL3vM2mbjZSyIWlSfoZgOKrg4Mo+POGoEOwyBu8ODFaNSdVxV37PwQUi2f97C//bqNnZeiNLrjdxGHX6/gTYaXSoCHNrhiELpEweMGHZYjf7sdUvkb7MCTY1vnxCaYYydhU0Vp983MFqQI7RNtAACQxz+/lo4gJ84FF+u1EKMaw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717185458; c=relaxed/simple; bh=waO47AVKQXebwki+vP6AIbp5ruc9+vs3ozpJycT6ARA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=t9pl5SBc6JO0BFeBXveDE87KbETbomPMk90SF+iJgH8xKwKfVxQ5VzMPnQys1t8/wWhv70+inArICNoZD4alJkyG/aJmvUCaBbl38zQfA3jwQtX50EyaMdsUVx8u+V94l9J3REBo7FGszlVVJQvXizzIvEFRpdTpjN8JKvQGcKk= 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=SdsRnDqn; arc=none smtp.client-ip=192.198.163.18 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="SdsRnDqn" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1717185457; x=1748721457; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=waO47AVKQXebwki+vP6AIbp5ruc9+vs3ozpJycT6ARA=; b=SdsRnDqngIY/gjuwLjQHTaAEYGSlrWwhYxK27cycQkDKi8AIMzwQDw0u 92Rhd189cGUk3zV4GeSX1rsWyefdy+6JpDBkuO8uA4ebzBJvDgnUjAEAN EenGxak5rZZ4R+kktrJHsy4GYImlEvdjgidUafqm/9MwJjCfDZfrxL3d2 JmnSXVyOgCBo43huKKzmnt5dRnFQ/wcwCcQofQnOJqDdlHIxasY6a8AhQ 6eEQHjbNuIa4Vr993F0upzOOqQdseUBTaL59knz0kDaOBpN/q1aYzgrMB PqlqBuGbvN1kHKCDtqNrvvEJAXVNNj4pla55m5xxKwY9UixhOhtyDTYEZ w==; X-CSE-ConnectionGUID: j7rAyElbRPCZlKFFdeqYnA== X-CSE-MsgGUID: 1SZwZvkOQnm7FiS7qDPScg== X-IronPort-AV: E=McAfee;i="6600,9927,11089"; a="13501158" X-IronPort-AV: E=Sophos;i="6.08,205,1712646000"; d="scan'208";a="13501158" Received: from fmviesa002.fm.intel.com ([10.60.135.142]) by fmvoesa112.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 May 2024 12:57:33 -0700 X-CSE-ConnectionGUID: /+Q61v0/Q8CNZEn5CRgApA== X-CSE-MsgGUID: ArwkRCBhT3WOD32XSQ+O9g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.08,205,1712646000"; d="scan'208";a="59438876" Received: from agluck-desk3.sc.intel.com ([172.25.222.70]) by fmviesa002-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 May 2024 12:57:32 -0700 From: Tony Luck To: Greg Kroah-Hartman , Andrew Morton , Thomas Gleixner , Borislav Petkov Cc: 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 3/3] x86/resctrl: Replace open code cacheinfo search in rdtgroup_cbm_to_size() Date: Fri, 31 May 2024 12:57:20 -0700 Message-ID: <20240531195720.232561-4-tony.luck@intel.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240531195720.232561-1-tony.luck@intel.com> References: <20240531195720.232561-1-tony.luck@intel.com> Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Use get_cpu_cacheinfo_level() instead of open coded search. Signed-off-by: Tony Luck --- 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/resctrl/rdtgroup.c index 02f213f1c51c..4a5ab0f6a412 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_open_file *of, unsigned int rdtgroup_cbm_to_size(struct rdt_resource *r, struct rdt_domain *d, unsigned long cbm) { - struct cpu_cacheinfo *ci; + struct cacheinfo *ci; unsigned int size = 0; - int num_b, i; + int num_b; num_b = bitmap_weight(&cbm, r->cache.cbm_len); - ci = get_cpu_cacheinfo(cpumask_any(&d->cpu_mask)); - for (i = 0; i < ci->num_leaves; i++) { - if (ci->info_list[i].level == r->cache_level) { - size = ci->info_list[i].size / r->cache.cbm_len * num_b; - break; - } - } + ci = get_cpu_cacheinfo_level(cpumask_any(&d->cpu_mask), r->cache_level); + if (ci) + size = ci->size / r->cache.cbm_len * num_b; return size; } -- 2.45.0