From nobody Mon Feb 9 06:28:26 2026 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.21]) (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 317FD132136 for ; Fri, 28 Jun 2024 21:56:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.21 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719611798; cv=none; b=Pt8A8qGtvM1qLBzHfMPEwq3xgLC4J9gH1VpCAdUKscRajEZet8ovN/P5fz++slZcBjpO8mPwJR7bS80nCJWqBeb3oKRabzoCgePjD91kC6F6msAvI59iEsW8zTG2HYCH4K1ZhvyjLlqajAsNNfkXxd5D6zTrF6m6z4Fo9NYK/0k= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719611798; c=relaxed/simple; bh=pRMMuFAo+vgoaQPT6H9NbnUr8oF0p+OxKZvV5KwLCn4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=q991gOuGU54U30lPEjYZgWaYQci8ZbQ2yLEP8X1YKzigd9Xxvuxl9FN0zVllFWYMtBKlrb5LyBJTlZIJvP4tKSzN5LhMKzEQaEPHZorp+uM3b8wGQLUQHOkcltzP9etZ1wFSh99sVL75LSxwca5fE/t5ByjGYWPYo8c/7ZH9tyY= 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=gtT1M58f; arc=none smtp.client-ip=198.175.65.21 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="gtT1M58f" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1719611796; x=1751147796; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=pRMMuFAo+vgoaQPT6H9NbnUr8oF0p+OxKZvV5KwLCn4=; b=gtT1M58f9ePogEeXBnj+9VJip42MQuh4vFTZpO1sqRV5FVIcsleHsdNo ydJhCA2Av5ivvRiGFCWSGEYKeGX0JogC2OlDgWEjP8zgwpYIrmU4/Nhfq 1AseGox5duZ03f9K9hb2h4nz0+JcQSpT/MeqDHyNN/imAPpzuXet2z5X+ D12h/YNeVAfUDPThKyJX65fGBMKN+Zb8KSi1uyOLY9/AnV+WErnWU/Ud4 XLwYMVZZEq/ChE7vC3Txbb3ItyAWQTfkgC2wMsbFIICAFlbB+ZtyJZkEV qvPqREn/Qy6W1pFce4NHuh22r0WmdodWYu2iCXT0ZxJreO3JG5Nob3oZB g==; X-CSE-ConnectionGUID: 35G/+X/WQbeFdw7zQ21DJQ== X-CSE-MsgGUID: ZE2R56NeRCClUVsdlHik/w== X-IronPort-AV: E=McAfee;i="6700,10204,11117"; a="16762601" X-IronPort-AV: E=Sophos;i="6.09,170,1716274800"; d="scan'208";a="16762601" Received: from fmviesa002.fm.intel.com ([10.60.135.142]) by orvoesa113.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Jun 2024 14:56:28 -0700 X-CSE-ConnectionGUID: Nl5alrlIQ4anpljGHFCnYQ== X-CSE-MsgGUID: 5W6Q0IWCTFqajzybehs6fQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.09,170,1716274800"; d="scan'208";a="68065666" 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; 28 Jun 2024 14:56:27 -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 v23 11/19] x86/resctrl: Refactor mkdir_mondata_subdir() with a helper function Date: Fri, 28 Jun 2024 14:56:11 -0700 Message-ID: <20240628215619.76401-12-tony.luck@intel.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240628215619.76401-1-tony.luck@intel.com> References: <20240628215619.76401-1-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 Reviewed-by: Reinette Chatre --- 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 d0443589cd86..9c38ddcfe150 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) +{ + struct rmid_read rr =3D {0}; + union mon_data_bits priv; + struct mon_evt *mevt; + 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) { - struct rmid_read rr =3D {0}; - union mon_data_bits priv; struct kernfs_node *kn; - struct mon_evt *mevt; 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 2.45.2