From nobody Fri Dec 19 21:11:38 2025 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.10]) (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 3242713F43C for ; Tue, 28 May 2024 22:20:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.10 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716934824; cv=none; b=BbFfJRlpLQjrmSt3KrbUO1YpS2/457mmWJ+R5cL09XI5XAmD4AeR8Yq3rsNqZscCgAF/Qp/Yt/j6u9qE8QUeHpXkEfh/cG1vHZ/JOMFsGD2dFw9MJpbPYXyiICK72cGJpw+y1CO6exZkuVfEtoW/xqMycrA/in2NGXR55Fc7h70= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716934824; c=relaxed/simple; bh=toe5dfGHlUZUs5KALimRrGwBstUTM/xEsWdx/zsWdgE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ZbO6qyzsiF2Dz2msYrnQVtJV5uxZtZP3pOm8Z9kWsrWqH6ZlyX2CyKnNzX7sSO/dvvOF1fEiv9NrVIryEfThRP6kUqwIgzp1A4mfP0QdlzZaFCSVUmf01yaXqbyuL00e5Xkeuq7eteGQpV3pV/poBmWwzfxjrFi9BkFP0HqAI4I= 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=UOkkLx8p; arc=none smtp.client-ip=198.175.65.10 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="UOkkLx8p" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1716934824; x=1748470824; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=toe5dfGHlUZUs5KALimRrGwBstUTM/xEsWdx/zsWdgE=; b=UOkkLx8ppFJYvA1LE0mrZhcgQ52Gq1vumo3z4/RWxvqGWdMDUXzoIbjr civW6GcWeT//ZE72wqUBvsV0/qHJPStqgyr1pcCo155XrpHGKuQ2p1Nia hhN4hHTO3Q4no88PQzHfA9/cUVi/lll612q37XzOEfkdIKJEBgDnhO45H xyutTDGAxWc8A8bo1mZtGYY8uxNpNZ8KNtFRDx+N0qB1nsXBB0nq5y6hP dmsZsT6YfsejT5lwqNMAaO+gdezJtaF/8z3EYd8XK8jimSPWfoZL+4FGn s2LRVoy4Ly+dEAlU1Y/SrKLJSTvMXifo9wotcNjiEoOUwO+1IbfW981ec g==; X-CSE-ConnectionGUID: Qy7R7BazQAidueiO7v3YEA== X-CSE-MsgGUID: 54On5gvzTQSMhPfzIH/PiA== X-IronPort-AV: E=McAfee;i="6600,9927,11085"; a="30812205" X-IronPort-AV: E=Sophos;i="6.08,196,1712646000"; d="scan'208";a="30812205" Received: from orviesa005.jf.intel.com ([10.64.159.145]) by orvoesa102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 May 2024 15:20:18 -0700 X-CSE-ConnectionGUID: TbZ4eCTbSX2gVQXLPsQPBw== X-CSE-MsgGUID: H/8pPVi9SoGghi2BnwPLjA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.08,196,1712646000"; d="scan'208";a="40090740" 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; 28 May 2024 15:20:17 -0700 From: Tony Luck To: Fenghua Yu , Reinette Chatre , Maciej Wieczor-Retman , Peter Newman , James Morse , Babu Moger , Drew Fustini , Dave Martin Cc: x86@kernel.org, linux-kernel@vger.kernel.org, patches@lists.linux.dev, Tony Luck Subject: [PATCH v19 10/20] x86/resctrl: Refactor mkdir_mondata_subdir() with a helper function Date: Tue, 28 May 2024 15:19:55 -0700 Message-ID: <20240528222006.58283-11-tony.luck@intel.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240528222006.58283-1-tony.luck@intel.com> References: <20240528222006.58283-1-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" In Sub-NUMA Cluster (SNC) mode Linux must create the monitor files in the original "mon_L3_XX" directories and also in each of the "mon_sub_L3_YY" directories. Refactor mkdir_mondata_subdir() to move the creation of monitoring files into a helper function to avoid the need to duplicate code later. No functional change. Signed-off-by: Tony Luck --- arch/x86/kernel/cpu/resctrl/rdtgroup.c | 45 ++++++++++++++++---------- 1 file changed, 28 insertions(+), 17 deletions(-) diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/r= esctrl/rdtgroup.c index 13f93f2a55b3..dd386ad9458a 100644 --- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c +++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c @@ -3025,14 +3025,37 @@ static void rmdir_mondata_subdir_allrdtgrp(struct r= dt_resource *r, } } =20 +static int mon_add_all_files(struct kernfs_node *kn, struct rdt_mon_domain= *d, + struct rdt_resource *r, struct rdtgroup *prgrp) +{ + union mon_data_bits priv; + struct mon_evt *mevt; + struct rmid_read rr; + int ret; + + if (WARN_ON(list_empty(&r->evt_list))) + return -EPERM; + + priv.u.rid =3D r->rid; + priv.u.domid =3D d->hdr.id; + list_for_each_entry(mevt, &r->evt_list, list) { + priv.u.evtid =3D mevt->evtid; + ret =3D mon_addfile(kn, mevt->name, priv.priv); + if (ret) + return ret; + + if (is_mbm_event(mevt->evtid)) + mon_event_read(&rr, r, d, prgrp, mevt->evtid, true); + } + + return 0; +} + static int mkdir_mondata_subdir(struct kernfs_node *parent_kn, struct rdt_mon_domain *d, struct rdt_resource *r, struct rdtgroup *prgrp) { - union mon_data_bits priv; struct kernfs_node *kn; - struct mon_evt *mevt; - struct rmid_read rr; char name[32]; int ret; =20 @@ -3046,22 +3069,10 @@ static int mkdir_mondata_subdir(struct kernfs_node = *parent_kn, if (ret) goto out_destroy; =20 - if (WARN_ON(list_empty(&r->evt_list))) { - ret =3D -EPERM; + ret =3D mon_add_all_files(kn, d, r, prgrp); + if (ret) goto out_destroy; - } =20 - priv.u.rid =3D r->rid; - priv.u.domid =3D d->hdr.id; - list_for_each_entry(mevt, &r->evt_list, list) { - priv.u.evtid =3D mevt->evtid; - ret =3D mon_addfile(kn, mevt->name, priv.priv); - if (ret) - goto out_destroy; - - if (is_mbm_event(mevt->evtid)) - mon_event_read(&rr, r, d, prgrp, mevt->evtid, true); - } kernfs_activate(kn); return 0; =20 --=20 2.45.0