From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 1DDF923315F; Tue, 15 Apr 2025 18:50:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744743021; cv=none; b=cee5DpMtDXxVYQL+D9QGJqJztc10IPhuGJ1TQF/xjamX+k9z0CAQXtAL9L2xg+Raf0LlrXQ/UAGdMaRs+d2a3RgPowyoi/yHzcPHYfXDqTmLWbLknWLhNbU6903Cepngfez2TeyUXcXKzDyvBIZNend2AQxQo/zPkjknQWRlv+k= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744743021; c=relaxed/simple; bh=Wh9+r6C8QnFxVuYP0gI7fEkh16Fr4uto4HN5gD1lmc8=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=a068dNKuNxayUNUoyqYf8HKfb3ZZPwvwtaypcxXs3HUV3xd+gULSWMlK0rFTJ3L8ogslBgFq2EDNN8b8AQph0RU9MXW+QkE9dHrmbYkM+6fU0ZEwF3WKpUlN0zCi8Bdek9WsYzW7+L8gX6Ff8x73mgM3rXXjFyXTtPZZ74vNEZ0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=BI7MZsmW; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="BI7MZsmW" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 62A6AC4CEE7; Tue, 15 Apr 2025 18:50:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1744743019; bh=Wh9+r6C8QnFxVuYP0gI7fEkh16Fr4uto4HN5gD1lmc8=; h=From:Subject:Date:To:Cc:From; b=BI7MZsmWrpStN+UFK57Vh+JYaiGy27sqvN9DyRh0TD3VVvAZG7/+W8ONOyhbBNPL7 r5agAYMUXNtsaU4F3qgfjATl+sQFxMa1K5b0foC6mvTp2rdeehWoCf1b+YVR9aTzbD P3gM3+K7KljWg7ssH7OR38k8U3d4rV0iLd1CHbjsX35V+V9IcAyOEko8feTh4XsYjT NRNlNumc3Zu2Hk3O8Rnt6fTS8x+VGdJJnX7BgmD6Wzv7qjLQA/xky4Zu4QUhTgmX5w znDuosk8B0A/sWelciOSoRzCiIoFbiowIEShqIenTJLat9kMu8z1HNen8IwUYhIeJJ gsf0HIqAk0wZw== From: Jeff Layton Subject: [PATCH v2 0/8] ref_tracker: add ability to register a debugfs file for a ref_tracker_dir Date: Tue, 15 Apr 2025 14:49:38 -0400 Message-Id: <20250415-reftrack-dbgfs-v2-0-b18c4abd122f@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAEKq/mcC/13MQQ6CMBCF4auQWVvTdqgQV97DsCgwLQ2mNVNCN IS7W0ncuPxn8r4NMnGgDNdqA6Y15JBiCX2qYJhs9CTCWBq01EbWCgWTW9gOsxh777LA5tL0KJG 0s1BGz/IPrwO8d6WnkJfE78Nf1ff6o+p/alVCCifRtKZFrSXeZuJIj3NiD92+7x8pbae5rQAAA A== X-Change-ID: 20250413-reftrack-dbgfs-3767b303e2fa To: Andrew Morton , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman Cc: Kuniyuki Iwashima , Qasim Ijaz , Nathan Chancellor , Andrew Lunn , linux-kernel@vger.kernel.org, netdev@vger.kernel.org, Jeff Layton , =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1896; i=jlayton@kernel.org; h=from:subject:message-id; bh=Wh9+r6C8QnFxVuYP0gI7fEkh16Fr4uto4HN5gD1lmc8=; b=owEBbQKS/ZANAwAIAQAOaEEZVoIVAcsmYgBn/qphBv0yiZyz25NAHCFtGVV8gUZ7l4UWmbc7B +j56syFNuuJAjMEAAEIAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCZ/6qYQAKCRAADmhBGVaC FfjaD/48Cd1Nn25CCF68ks0mWwqMtvSe77wgEdeZQlx75JAipkoc5V/CFnVddb326XiSs594Nqx ECjL0Z0ZKnIYbxSf91nZuAX7XErhEv0vKK1iwvMQ5gTFpIff7V+pftQdBxKKKfMffEks9cugesI vT/+KAv66lh0Q6aTx67jj4Z/hXKVA3DRtuWcHOcNG3WxpmLaFDRp5OcTOkRutpNP2JchDQlPXVm RBtAcTqB8Mfjk+sUfsPsXd4+rPlxkKTBpufgHDXkfL2qr5AjR1yaPh9a8Hyxsz3gpOFcUY2u5jA WbcVHOUYvU620P0DgDq6Q+y7H5Ljgun8cmuTJmR8zmBsU528wZN1PNF+43KTMon+wwlx1FYL1Am yN+6pk92KZMKPGG27aL29g00Aj0QAoU6HblcJlSWyM2OKx3/TWW3xxUahhphZ76qoaikuO+yUJi UmsTmUqZHaIEMIwKRLE8besrQHqnbE07oEg/L2A/uw1MGiSDYks7jX6z72+5T+8KOCIVhRS3cjh Hp98Hxh2R5QAHdbsmTKugmAF/IDVvRqs7RpMii3k+RcD/f3kXrGPolu62SCIBiWkfIpOXPmRM1P 0CYyivox08stucvvJiwRhDQkiPFWI9nOM57mG/uZP1stpTGxPLXZzbtFRlEDsLM9D7BAIdhPNxq W4FqTQpXu7rYIpA== X-Developer-Key: i=jlayton@kernel.org; a=openpgp; fpr=4BC0D7B24471B2A184EAF5D3000E684119568215 I had previously sent some patches to add debugfs files for the net namespace refcount trackers, but Andrew convinced me to make this more generic and better-integrated into the ref_tracker infrastructure. This adds a new ref_tracker_dir_debugfs() call that subsystems can call to finalize the name of their dir and register a debugfs file for it. The last two patches add these calls for the netns and netdev ref_trackers. Signed-off-by: Jeff Layton --- Changes in v2: - Add patch to do %pK -> %p conversion in ref_tracker.c - Pass in output function to pr_ostream() instead of if statement - Widen ref_tracker_dir.name to 64 bytes to accomodate unique names - Eliminate error handling with debugfs manipulation - Incorporate pointer value into netdev name - Link to v1: https://lore.kernel.org/r/20250414-reftrack-dbgfs-v1-0-f03585832203@kernel.org --- Jeff Layton (8): ref_tracker: don't use %pK in pr_ostream() output ref_tracker: add a top level debugfs directory for ref_tracker ref_tracker: have callers pass output function to pr_ostream() ref_tracker: allow pr_ostream() to print directly to a seq_file ref_tracker: add ability to register a file in debugfs for a ref_tracker_dir net: add ref_tracker_dir_debugfs() calls for netns refcount tracking ref_tracker: widen the ref_tracker_dir.name field net: register debugfs file for net_device refcnt tracker include/linux/ref_tracker.h | 15 ++++- lib/ref_tracker.c | 153 +++++++++++++++++++++++++++++++++++++++----- net/core/dev.c | 6 +- net/core/net_namespace.c | 34 +++++++++- 4 files changed, 190 insertions(+), 18 deletions(-) --- base-commit: 695caca9345a160ecd9645abab8e70cfe849e9ff change-id: 20250413-reftrack-dbgfs-3767b303e2fa Best regards, -- Jeff Layton