From nobody Fri Oct 3 14:43:59 2025 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.14]) (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 6A116314B6C for ; Fri, 29 Aug 2025 19:34:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.14 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756496052; cv=none; b=Aaw2it4LamKfI0GakGkDI+fQuSXzey0H322sFE23QGdfAnBn5c57yqtHfzR1aLOvmI+2kClZWVLAFZuVux4J8+dUfJ2yH2H7BFTeMuHMPc9Ou2q4BiXuHhI+rRudeIq3jNcEB04TX7XF4h63xzeKyxFcXjb/X3Sly3YBAcP00q4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756496052; c=relaxed/simple; bh=jiulF38hrV5VG0cK4TzLddi4RpYVUDqHWNzidI8dD4o=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=gP1LMPSD7Z1F22ZFPkJOggcBhHG8StQdQOIVOYchb7xHYOMgX8WEbeZyZ+CnyHSguDqQoGvBuEafKDLSEZt7IS/e5eoKX3LXfxRw4075/RcCKkXSOqTnzEa1zEl5PlROxmE1rCqy+OHJtQzyMhL2gy6FJO2LWC+/IzIgAKBKrIA= 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=Kma/7UAF; arc=none smtp.client-ip=198.175.65.14 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="Kma/7UAF" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1756496049; x=1788032049; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=jiulF38hrV5VG0cK4TzLddi4RpYVUDqHWNzidI8dD4o=; b=Kma/7UAFKF2Y7hkvltuWM5DTphYvO26GUBnGziPtCTw4u5xaktukuYKo oVozENiuc0kKoPTBNiq7M3hJ7WVmQvu5P1BP9vJJTSbZ5d9tQ0Bj4+f2Y 4LkSUMycG6gx4HTIQ+ibKw1+Ug3pplBEhDEx9sGDh1VA3oMicd9G1REt4 yG5eIAzZeklnl2ExSjRc9qzAyijtVXbitLegXTxRB6Ewzppu6c3RGj35M EbK9XP9fBXUBUsK5iy2VvFYPccJiBybezc5HgdsIPJIhfopobd4qxJyed hYdRBYWYa0s0uh7ZOmWuXXem9DBBiqXyowGu5k7vtIie3zZ9zqS9c6pnz Q==; X-CSE-ConnectionGUID: 6jZGLhrzRjW6wrh1JmXdwQ== X-CSE-MsgGUID: rgAdQ+buThqapKahlwA60A== X-IronPort-AV: E=McAfee;i="6800,10657,11531"; a="62625338" X-IronPort-AV: E=Sophos;i="6.17,312,1747724400"; d="scan'208";a="62625338" Received: from fmviesa003.fm.intel.com ([10.60.135.143]) by orvoesa106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Aug 2025 12:33:56 -0700 X-CSE-ConnectionGUID: glCNMx6vSMmfbyTNnQ7tmA== X-CSE-MsgGUID: m3eF1lJiTLy+S1NeofxsTw== X-ExtLoop1: 1 Received: from ldmartin-desk2.corp.intel.com (HELO agluck-desk3.intel.com) ([10.124.220.202]) by fmviesa003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Aug 2025 12:33:56 -0700 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 v9 25/31] fs/resctrl: Move allocation/free of closid_num_dirty_rmid Date: Fri, 29 Aug 2025 12:33:37 -0700 Message-ID: <20250829193346.31565-26-tony.luck@intel.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250829193346.31565-1-tony.luck@intel.com> References: <20250829193346.31565-1-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" closid_num_dirty_rmid[] is allocated in dom_data_init() during resctrl initialization and freed by dom_data_exit() during resctrl exit giving it the same life cycle as rmid_ptrs[]. Move closid_num_dirty_rmid[] allocaction/free out to resctrl_l3_mon_resource_init() and resctrl_l3_mon_resource_exit() in preparation for rmid_ptrs[] to be allocated on resctrl mount in support of the new telemetry events. Signed-off-by: Tony Luck --- fs/resctrl/monitor.c | 56 ++++++++++++++++++++++---------------------- 1 file changed, 28 insertions(+), 28 deletions(-) diff --git a/fs/resctrl/monitor.c b/fs/resctrl/monitor.c index 33432a7f56da..d5b96aca5d03 100644 --- a/fs/resctrl/monitor.c +++ b/fs/resctrl/monitor.c @@ -805,36 +805,14 @@ void mbm_setup_overflow_handler(struct rdt_l3_mon_dom= ain *dom, unsigned long del static int dom_data_init(struct rdt_resource *r) { u32 idx_limit =3D resctrl_arch_system_num_rmid_idx(); - u32 num_closid =3D resctrl_arch_get_num_closid(r); struct rmid_entry *entry =3D NULL; int err =3D 0, i; u32 idx; =20 mutex_lock(&rdtgroup_mutex); - if (IS_ENABLED(CONFIG_RESCTRL_RMID_DEPENDS_ON_CLOSID)) { - u32 *tmp; - - /* - * If the architecture hasn't provided a sanitised value here, - * this may result in larger arrays than necessary. Resctrl will - * use a smaller system wide value based on the resources in - * use. - */ - tmp =3D kcalloc(num_closid, sizeof(*tmp), GFP_KERNEL); - if (!tmp) { - err =3D -ENOMEM; - goto out_unlock; - } - - closid_num_dirty_rmid =3D tmp; - } =20 rmid_ptrs =3D kcalloc(idx_limit, sizeof(struct rmid_entry), GFP_KERNEL); if (!rmid_ptrs) { - if (IS_ENABLED(CONFIG_RESCTRL_RMID_DEPENDS_ON_CLOSID)) { - kfree(closid_num_dirty_rmid); - closid_num_dirty_rmid =3D NULL; - } err =3D -ENOMEM; goto out_unlock; } @@ -870,11 +848,6 @@ static void dom_data_exit(struct rdt_resource *r) if (!r->mon_capable) goto out_unlock; =20 - if (IS_ENABLED(CONFIG_RESCTRL_RMID_DEPENDS_ON_CLOSID)) { - kfree(closid_num_dirty_rmid); - closid_num_dirty_rmid =3D NULL; - } - kfree(rmid_ptrs); rmid_ptrs =3D NULL; =20 @@ -957,9 +930,31 @@ int resctrl_l3_mon_resource_init(void) if (!r->mon_capable) return 0; =20 + if (IS_ENABLED(CONFIG_RESCTRL_RMID_DEPENDS_ON_CLOSID)) { + u32 num_closid =3D resctrl_arch_get_num_closid(r); + u32 *tmp; + + /* + * If the architecture hasn't provided a sanitised value here, + * this may result in larger arrays than necessary. Resctrl will + * use a smaller system wide value based on the resources in + * use. + */ + tmp =3D kcalloc(num_closid, sizeof(*tmp), GFP_KERNEL); + if (!tmp) + return -ENOMEM; + + closid_num_dirty_rmid =3D tmp; + } + ret =3D dom_data_init(r); - if (ret) + if (ret) { + if (IS_ENABLED(CONFIG_RESCTRL_RMID_DEPENDS_ON_CLOSID)) { + kfree(closid_num_dirty_rmid); + closid_num_dirty_rmid =3D NULL; + } return ret; + } =20 if (resctrl_arch_is_evt_configurable(QOS_L3_MBM_TOTAL_EVENT_ID)) { mon_event_all[QOS_L3_MBM_TOTAL_EVENT_ID].configurable =3D true; @@ -984,5 +979,10 @@ void resctrl_l3_mon_resource_exit(void) { struct rdt_resource *r =3D resctrl_arch_get_resource(RDT_RESOURCE_L3); =20 + if (IS_ENABLED(CONFIG_RESCTRL_RMID_DEPENDS_ON_CLOSID)) { + kfree(closid_num_dirty_rmid); + closid_num_dirty_rmid =3D NULL; + } + dom_data_exit(r); } --=20 2.50.1