From nobody Wed Dec 17 10:28:29 2025 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 1BD0B238C2F; Fri, 9 May 2025 15:54:30 +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=1746806072; cv=none; b=MMQXB+Ux32unRmGdM9PzMRkhwpOaJsl/aBbNOJ+r+6+EMSIIiFbUL3Rk88Es9pa1BRDyGs8psDmwlL2vVJxbeXYIjq5tl2vAVudO8KNXpj67EV+aPbHUmFw7xeHqFLl6kXG9TnapjjIrCI3VazLwmcxoIMuNG9SFt5SEn/WvGWw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746806072; c=relaxed/simple; bh=LxLVRB8GvDbWgwRUBMxy60vYqqNKxSuBn+6jZzlFCL8=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=rC15hrJfPI5X2DpkTKnmrQslMmhirKSCid64vgbfToPeFCWIPB1+nRQPwDwy8artvK4My9svDzFR2ht9vdKUISEiCACHYo2bhT4jozrH/WRpXgZClB0EE2JNMJnlhv+FrfLX33b3LfHp9dTURAMr2fji8m9L2+U+xft8wbLcuKs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=g88zdz3q; 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="g88zdz3q" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CF1C5C4CEE4; Fri, 9 May 2025 15:54:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1746806070; bh=LxLVRB8GvDbWgwRUBMxy60vYqqNKxSuBn+6jZzlFCL8=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=g88zdz3qfycUSPF8fcFoQsSFCGQrrZNGmffLzaoSaxHrtIuPahPUiW1lE9FeaFlC9 PVbycfySMPUtdOdkQHHzA0BdKodnvQWV2gKOI+oPpqo6BIBxg6H/knk+R45K3vsFft yWf+7zUM8Y/QC8XMm33emK326dyqiqrnRIDumZDyeihtQZQq8tbziDXCDL3m0nwo4m 9ELl4zi08myvz4q04N4dhfwy9JGVoWO+MzXnnn5vgf1GnbicJ5JT8SoGOfs7KrzMoU V7oYPZsZo0dCUnr/K3U4HnLgUG5kbX0FSDWtfeF6d5xnxzLoEcWNBxbWsb1k/vkswn ZgcpWcngdGGbQ== From: Jeff Layton Date: Fri, 09 May 2025 11:53:38 -0400 Subject: [PATCH v9 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: <20250509-reftrack-dbgfs-v9-2-8ab888a4524d@kernel.org> References: <20250509-reftrack-dbgfs-v9-0-8ab888a4524d@kernel.org> In-Reply-To: <20250509-reftrack-dbgfs-v9-0-8ab888a4524d@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/ZANAwAKAQAOaEEZVoIVAcsmYgBoHiUuSHanXz7A1Ilm2bM/zNryrFCG5d5XssAi5 bTRecqbRRGJAjMEAAEKAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCaB4lLgAKCRAADmhBGVaC FWSNEADGUHGBJlbP+lSQMWSbujQFrxCQUQlG/XOq6ZeOfhBtZyD0pvT2smyjryOOhnPVbxk/kx6 9CYmpuVNYBYkEREU1ucURtaS6i/VVwY3TnSxh2g0wdjmaaw3XXOJV1sI/lrveWg//k84fzB/pEt 63mG9CqIrsPepCLTBHZA65Q3syMILqHYF0871uDGvv8ik8lsvAEgICprbeIWJ6GypVpjnIav5Gt VGPC3pn0MUAedmjFchHgoBqurqub4JMeo5VxH2JNu+0KZDbqAXS+0qmQlhM0j+uejoc/Hweneo0 +bd3ejsBxmxSAxu1kjDyxZ92cA5n0N8eBr4XSv6VLVJMVgn166y8+XUbC+WJCp+gbJUGocRFP8R bZ+s2ic/BRSUCmSaCG0+y3thioU7MmmBXXoS3BDDLwIAgMUoWemTVmnCbhd+QpvpW/lZS3Tpw9W 0IkDQbCY8wNjCUaESq/C5GfIVH+KYFeNmiCVPCkICJ58IgoXrBUv5qoh4ICYcf890JXr126q+Fc 4+bJgyFXWY8Dv87xTZPTmCuC3lQ1mss8LQ54n9Pn1PgVVorVInEFkzvWhXbjH59sHeI3JO/Ogne e1hvr52FMKTmrrf2F/fmednW1aaoUhOSYDiSulw+wr/i57UXm04UWjbOZfKv6sKqy/1AaLQcupP FClonXePgeB5TfA== 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