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 A9CEA2C1A2; Fri, 18 Apr 2025 14:24:36 +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=1744986276; cv=none; b=XyPmsJAkra7LSXWwPokqHyrPa6MB03gaizkpGhtwP2JJaiqWVVSAP3Fo5TS2fV6BooVEB5D7RvmHdlT4m3VaW+3dLx6Xj4oqiYIBJHmyPLsmiwrl7SaBmPUAK+RjYcfCGS+fYsTwXF/eSwPcKnadDE37NrAAOxCFhWsOjd0qsoI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744986276; c=relaxed/simple; bh=9nFO2uV/6R5my/yO8nRy9Gc5lPiZRpUZnZeySK77PSc=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=eqevWe5EqAa9tMeiwPCkFYjI4Nfuhv16SEarFD3D5PWO7hG2ZGZNgOEKqPsUNNuYgrVE/RZ0icFBrbgxSWstW/TAbD+nzphQKwYQZ1j3IVPuD/tJ32+b2B6+bYaLJibG4B097hISTaCphRXQHurczVGRS98eHWOf5Ceniz2HskU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=gYuN4sSg; 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="gYuN4sSg" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 48327C4CEE2; Fri, 18 Apr 2025 14:24:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1744986276; bh=9nFO2uV/6R5my/yO8nRy9Gc5lPiZRpUZnZeySK77PSc=; h=From:Subject:Date:To:Cc:From; b=gYuN4sSg7ZpCPmi416kdmbNcu3ww+zffYxlpdnoK7NgAgA5ZUXpnms3oOdaf+NjaB 3cdB0aopw55+EMt2G4UIM5ZtQ/QBqkMy2ay55WUptf/XPdJClPBjeK3H5wCb6WEX18 jEruut+qDkeDp704L/+OD3jx8BX8w7fDcNJMAOBZZz+2cDCIXwytgvOnB0ziKTioPZ 9grxJC0C+BYkDX0FbR5My8UiM2qOPBqHGrMrUiBY5FJtuXdIovmiu2+vKh3ORLNuna EMN55dxBU2eBgyP6SQDSM2e+I7PLJ2lxHWIJ9r1+fQ8eh+L2PAQd/22Ccg59u4Air/ RfgW3iLaYp8+g== From: Jeff Layton Subject: [PATCH v4 0/7] ref_tracker: add ability to register a debugfs file for a ref_tracker_dir Date: Fri, 18 Apr 2025 10:24:24 -0400 Message-Id: <20250418-reftrack-dbgfs-v4-0-5ca5c7899544@kernel.org> Precedence: bulk X-Mailing-List: netdev@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=H4sIAJhgAmgC/2XM0Q6CIBTG8VdxXEeDcyCpq96jdSEIymzawLGa8 91DtzbLy++c/f4TiTZ4G8mlmEiwyUc/9HmIQ0FMW/WNpb7OmwADyQRHGqwbQ2U6WuvGRYrlqdT I0IKrSEbP/PevNXi75936OA7hvfYTX67flPhPJU4ZdQylkgoBGF47G3r7OA6hIUsrwdbLnYfsN VdGVLrmAG7ncevLncfsDXJ5FqCMcvrHz/P8AQBgcH0tAQAA 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=2095; i=jlayton@kernel.org; h=from:subject:message-id; bh=9nFO2uV/6R5my/yO8nRy9Gc5lPiZRpUZnZeySK77PSc=; b=owEBbQKS/ZANAwAIAQAOaEEZVoIVAcsmYgBoAmChvduo3yDD9PFjedE268IXAg7BNeU1w3gL1 vUNQq0Lo2SJAjMEAAEIAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCaAJgoQAKCRAADmhBGVaC FRLcD/4g8wKYKiiarDRpC13+LZMKlU/x4Ohycx6e2qiMsWBMjCFtU3E/aYv2gx/bb86lou/+UQi eNaCO6HHAW3u+iufA4+SGhJC3V2ZrrN8RayqqVwj6PGBoCpbon9OxzB65jo4zg8S1YuKcEm5++3 3ceBgeKlj9dmhyEsJph8UxPuP/H/0c5bAk5lakNMKv4Rok0pOMvY383w902NJfzrDODlP4sc44+ d8hRMNT4pPjcQUoJrjMkW/PYTMcZAira/yQe+wrT8mM7DEN4tJ1ce8JqJc9wAiGouVrEXTunrLJ dE6qy3ONlXu1DTdpeUDh1w7Dxb+u8+F3NaJwt8IejmqlRa5bobDTRtn8kqygPt3mFn3C9IFvNkH Cd5XQRaFWaX/6HBH90vvZ8/CbuZ7ZvBCqYpLGrpSPM/wv5/FV9Hu23ntSEhvn0Yf6WrYFZhLNiN oPrz0XWwJ2xAsEna7eiXB/j8oslc3YFmoYOrdBabJwIspOULWsN1Fro1U1m8WHGxsL639WcNgWz N6lT23VWLwMiNbpf++c2lmjQFiCOTEpFils2zVKYQ8WN/Ur3Xb3BHQynG9PIF4/VWJIEQRMSA7f +A+qEmgI1itlrmIy77BAfYtSPuthg/MXigWOE5OnGIM8mh+FzBR4bHEtuUCzdra0hZc7m9OwqoK S6S7fLYUVR58yJA== X-Developer-Key: i=jlayton@kernel.org; a=openpgp; fpr=4BC0D7B24471B2A184EAF5D3000E684119568215 This version should be pretty close to merge-ready. The only real difference is the use of NAME_MAX as the field width for on-stack sprintf buffers. I left the Reviewed-bys intact. Let me know if that's an issue and we can drop them. Signed-off-by: Jeff Layton --- Changes in v4: - Drop patch to widen ref_tracker_dir_.name, use NAME_MAX+1 (256) instead since this only affects dentry name - Link to v3: https://lore.kernel.org/r/20250417-reftrack-dbgfs-v3-0-c3159428c8fb@kernel.org Changes in v3: - don't overwrite dir->name in ref_tracker_dir_debugfs - define REF_TRACKER_NAMESZ and use it when setting name - Link to v2: https://lore.kernel.org/r/20250415-reftrack-dbgfs-v2-0-b18c4abd122f@kernel.org 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 (7): 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 net: register debugfs file for net_device refcnt tracker include/linux/ref_tracker.h | 13 ++++ lib/ref_tracker.c | 151 +++++++++++++++++++++++++++++++++++++++----- net/core/dev.c | 6 +- net/core/net_namespace.c | 34 +++++++++- 4 files changed, 187 insertions(+), 17 deletions(-) --- base-commit: 695caca9345a160ecd9645abab8e70cfe849e9ff change-id: 20250413-reftrack-dbgfs-3767b303e2fa Best regards, -- Jeff Layton