From nobody Mon Feb 9 10:25:42 2026 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 DDFDF288C31; Wed, 7 May 2025 13:06:56 +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=1746623217; cv=none; b=EclJxU8Pqb4QCghsbELips58mpF8BcLrDTLVVA1VUz5nfUJ1Q8ap0+D7z3IB2PjBs7uEgfqnZvAka4gv4GWr/WsRRx8843T2tpOl+CevlMNj8S0UwwEQqLSAXV3OWRI7K8tPNfiBNy3JikEVX1c/3v7wgVoabg/wXjna1ybhkGo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746623217; c=relaxed/simple; bh=LxLVRB8GvDbWgwRUBMxy60vYqqNKxSuBn+6jZzlFCL8=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=cecKyYe0UEp7XLdWR0CiNGGTWuNO+cLzI55WB71SCUhLX4ssfNRs4eL+DumJs+ZFcWITYf/IPuJ9pmxDKub1SRj4Ddz0/oitvpkCsNR2fxjR5ZTYLUFCCq0cx31QuGM2IMMOTvecgGS8wOKoCUxpS8YvQHk1w28Bt7iW4aAqimw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=F/Avoz3N; 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="F/Avoz3N" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 97971C4CEF2; Wed, 7 May 2025 13:06:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1746623216; bh=LxLVRB8GvDbWgwRUBMxy60vYqqNKxSuBn+6jZzlFCL8=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=F/Avoz3NIXBLZbU9X+i5TfX9Glx+eMsbX8LLPBgpjxWWCRyiOSTPr6lVo03SM7Pqm 4ygmaykhSVb3JK3qpMBUOtJws6yoRohgMKrop8i0TdawDylaKxLX3MFffADDBGX1ep JnlxiEFGkzVvE5TNEdQuGVqfVCHRkbEjGzOha0WfPNrZd8p9zXfv8aAmDNgiBwiTtZ yEPfOevtiE+3ktI486drFPQsmk2rF0dsTViYbIBmTZFCMfcZ+PaIxjxXdciCCjetOe M3hRY0ihlFlDopo8mSda3/DWG8849D3EMgD7Ewi1PqzuVqbTYxQc5WOL2DjFY0AVoq qBmcmMVbOtn9w== From: Jeff Layton Date: Wed, 07 May 2025 09:06:27 -0400 Subject: [PATCH v8 02/10] ref_tracker: add a top level debugfs directory for ref_tracker 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: quoted-printable Message-Id: <20250507-reftrack-dbgfs-v8-2-607717d3bb98@kernel.org> References: <20250507-reftrack-dbgfs-v8-0-607717d3bb98@kernel.org> In-Reply-To: <20250507-reftrack-dbgfs-v8-0-607717d3bb98@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=1182; i=jlayton@kernel.org; h=from:subject:message-id; bh=LxLVRB8GvDbWgwRUBMxy60vYqqNKxSuBn+6jZzlFCL8=; b=owEBbQKS/ZANAwAKAQAOaEEZVoIVAcsmYgBoG1rouWFdhP/plUwbE1og8p12U//Qo7GRDszZb vz+YlLaseyJAjMEAAEKAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCaBta6AAKCRAADmhBGVaC FS1DD/9jx9aWxNjpDHg0x5Y3Nuz8dBFoNusc5ZEv/5ZGG8XoWbO3y+CKR+F26Vo7aBMSRpBrXhC usv1ZQvaqwJVGOWqWWbHHhsEQgncT0V3WWs/nSyVOMsROz4jYG2l159rA6bub0h6/mrvglWVZO3 vNXli2rusl8PPneAe0NF0oFuP9p9PjBYkyoEsBfl8wD6qb2AyuuOu9W7Xaip50/scMpDWEhNryF DZfNjKWDOWer4KsG4/Iuo0tT39LMd6cNYKNfn8xIj3yuNRx1fDnBX4rp21KTWZNexYdbpUFj6+V lndQpuBOmvk9yE7B4KdkhG1KG8KkncUJVqVc8LNV4ag/Kq9BEhST4RqdkmXOUI+wWWTDwqw+spK wLa3rSCDWpEYll/10wDDcBXrgIeBnqcbPfrNI2HiLPlxtg2q6mXtZhEbHDXEor/AxJtKIP8Zqoj XBfrQ6wQ+TKi038H3x6HKzI4vC6Aq/F9GkBMOXgfH+Nntr35mN97aAXxvMQLDdOrQZzQQeoE5zj p6ZlIPGVj0EMumlXyuy9lYFEubdy8FcrsoW3FrJdj7+65QQKDcD1g5AMsHbX+hOIwy3M072yLUN oh1mi6Y1PA3JanP18Nz8qGLz8bIoV6WcC9TvgayZYioApjJ3vjpb85lvPFn4Z+D7LqqKSydMf1V yY6nKOUmaaHrWLA== X-Developer-Key: i=jlayton@kernel.org; a=openpgp; fpr=4BC0D7B24471B2A184EAF5D3000E684119568215 Add a new "ref_tracker" directory in debugfs. Each individual refcount tracker can register files under there to display info about currently-held references. Reviewed-by: Andrew Lunn Signed-off-by: Jeff Layton --- lib/ref_tracker.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/lib/ref_tracker.c b/lib/ref_tracker.c index de71439e12a3bab6456910986fa611dfbdd97980..34ac37db209077d6771d5f4367e= 53d19ba3169c6 100644 --- a/lib/ref_tracker.c +++ b/lib/ref_tracker.c @@ -273,3 +273,19 @@ int ref_tracker_free(struct ref_tracker_dir *dir, return 0; } EXPORT_SYMBOL_GPL(ref_tracker_free); + +#ifdef CONFIG_DEBUG_FS +#include + +static struct dentry *ref_tracker_debug_dir =3D (struct dentry *)-ENOENT; + +static int __init ref_tracker_debugfs_init(void) +{ + ref_tracker_debug_dir =3D debugfs_create_dir("ref_tracker", NULL); + if (IS_ERR(ref_tracker_debug_dir)) + pr_warn("ref_tracker: unable to create debugfs ref_tracker directory: %p= e\n", + ref_tracker_debug_dir); + return 0; +} +late_initcall(ref_tracker_debugfs_init); +#endif /* CONFIG_DEBUG_FS */ --=20 2.49.0