From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 58789C5B543 for ; Wed, 28 May 2025 14:35:15 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6A84B10E67C; Wed, 28 May 2025 14:35:14 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="rVjGgmEE"; dkim-atps=neutral Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by gabe.freedesktop.org (Postfix) with ESMTPS id AA5CC10E674; Wed, 28 May 2025 14:35:07 +0000 (UTC) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 26D10629D3; Wed, 28 May 2025 14:35:07 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0BE21C4CEF1; Wed, 28 May 2025 14:35:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1748442906; bh=C3NjXad8atSO1FZ7CKOXtU5VIRqVojZ9jejAtjAiqWM=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=rVjGgmEEhYyWizmS5qe9pgAkmMhCy5Zj85Jv1kZ7Y2O8Ub7mlkHLihVkcMAk3H3ZN E7iRTygacktYSR7oOXiWRsD4zfrryIKN6MiIByx2cAu0X0ow+A4BOIK/GAo71/xF9U X0OyB/gT4HHIT4NlCAS4XfvCMoDEPPA/8sG+R8eCIs8o12IXwBeruZ6koDYesPjKar GanDmCR5KWzx8+sbyDd4E+RoofJiXj/MsPXJt6yO5IfAiFcv2mYlmADVxxkrg+cOGw ZuH41NBRrISpjmG1UOZLM69X4riZAMF9v1FcxoWKrsjFaiKUW4GbyMBfWRkZ6OfIkA D7xaTgAaGNONA== From: Jeff Layton Date: Wed, 28 May 2025 10:34:41 -0400 Subject: [PATCH v11 09/10] net: add symlinks to ref_tracker_dir for netns MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20250528-reftrack-dbgfs-v11-9-94ae0b165841@kernel.org> References: <20250528-reftrack-dbgfs-v11-0-94ae0b165841@kernel.org> In-Reply-To: <20250528-reftrack-dbgfs-v11-0-94ae0b165841@kernel.org> To: Andrew Morton , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin Cc: Kuniyuki Iwashima , Qasim Ijaz , Nathan Chancellor , Andrew Lunn , linux-kernel@vger.kernel.org, netdev@vger.kernel.org, dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, Jeff Layton X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1850; i=jlayton@kernel.org; h=from:subject:message-id; bh=C3NjXad8atSO1FZ7CKOXtU5VIRqVojZ9jejAtjAiqWM=; b=owEBbQKS/ZANAwAKAQAOaEEZVoIVAcsmYgBoNx8G2qhxKRFMIuvaikAolyZRaHqqMfY9w6wlB B8ZCTg6SAqJAjMEAAEKAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCaDcfBgAKCRAADmhBGVaC FX5mD/4nt7J4dnvaIJZmR0mApa7CMh0kmPKOmUvWbpC4J99+rVd4RfMPu6Hwcj8EaNHJNOyw/+h sasuPE/veTJqNVEI4OOcaNY99cNzGgv22I/eGcGZ4NLvKp3mtxed01UIeZAW6SlYpYVHrBc3cxV UdGhqdnLJx+91ZubJppxk+9lUHIw4s8xgdSPiz+D/EG66drv/cYSsNETN1Wtjnp1qSMu82c9T4o HKs0MLdC3XLCARnfPb0Tb27kbfZmziu50XXL/szr7zIEyQvAlRnWg6pitWPGj19nOnPhMKYrrgH ymKlmIOce9dEypxjDuoIj2WHuSqNuAWNj8DNinabRBoN3+/ccM6WXPya3+Go9mOTuQ/9+VDcfX6 ev+KRvhuwjK1bz+3NCwIi1PWmdmIQFZsppnGicY/PhokPcGBEfXl3zG114KX3y3gDBwyKQbs9Fz KOM1hEEy2P9tGBDRVhBZlfelyhJ+V6UIC+pQYeTa0wr1nJNaQRuyEb3PRAO/Jzenz49IjbGui1D ue7VyzRbPo6IhyX389oz6CjJNxBzxPrJLFN/RZJsRHjTwORAmkLQZaIuGLd+JM6a5s96nSP8Qhv UgStVmt3LYhMSTBdzfg9EqLvvcNMqqbrYDFIUkAtpOXONInWIOi6kyQYexpxxUHP6DF+eb/Udxo 4+/1LJXwJxD4rDw== X-Developer-Key: i=jlayton@kernel.org; a=openpgp; fpr=4BC0D7B24471B2A184EAF5D3000E684119568215 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" After assigning the inode number to the namespace, use it to create a unique name for each netns refcount tracker with the ns.inum and net_cookie values in it, and register a symlink to the debugfs file for it. init_net is registered before the ref_tracker dir is created, so add a late_initcall() to register its files and symlinks. Signed-off-by: Jeff Layton --- net/core/net_namespace.c | 30 +++++++++++++++++++++++++++++- 1 file changed, 29 insertions(+), 1 deletion(-) diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c index 8708eb975295ffb78de35fcf4abef7cc281f5a51..b2fd9c5635ecf8fccd48f1d5b967a5c6c41cfec4 100644 --- a/net/core/net_namespace.c +++ b/net/core/net_namespace.c @@ -791,12 +791,40 @@ struct net *get_net_ns_by_pid(pid_t pid) } EXPORT_SYMBOL_GPL(get_net_ns_by_pid); +#ifdef CONFIG_NET_NS_REFCNT_TRACKER +static void net_ns_net_debugfs(struct net *net) +{ + ref_tracker_dir_symlink(&net->refcnt_tracker, "netns-%llx-%u-refcnt", + net->net_cookie, net->ns.inum); + ref_tracker_dir_symlink(&net->notrefcnt_tracker, "netns-%llx-%u-notrefcnt", + net->net_cookie, net->ns.inum); +} + +static int __init init_net_debugfs(void) +{ + ref_tracker_dir_debugfs(&init_net.refcnt_tracker); + ref_tracker_dir_debugfs(&init_net.notrefcnt_tracker); + net_ns_net_debugfs(&init_net); + return 0; +} +late_initcall(init_net_debugfs); +#else +static void net_ns_net_debugfs(struct net *net) +{ +} +#endif + static __net_init int net_ns_net_init(struct net *net) { + int ret; + #ifdef CONFIG_NET_NS net->ns.ops = &netns_operations; #endif - return ns_alloc_inum(&net->ns); + ret = ns_alloc_inum(&net->ns); + if (!ret) + net_ns_net_debugfs(net); + return ret; } static __net_exit void net_ns_net_exit(struct net *net) -- 2.49.0