From nobody Tue Oct 7 21:59:01 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 C38BF29AB01; Wed, 18 Jun 2025 14:24:32 +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=1750256672; cv=none; b=pwkHqr5vl86B2SK6b307P7e9JTp+VMa+rm71Asc8jr8jX0NHVowBN9VG0aJvWfm2DoDPbermGgzDaQRSlS4bB8noAmUf8yTpAu/ENeirQC33ixcrMnzCFxIXSAA/ehtJVlnzn7Ub5mz+SoLdMfCoEFR5TXHHLQxld9waGz1L6lw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750256672; c=relaxed/simple; bh=Cf9EAXyNK0VxD7speigkvYTyuNOgS7Co5M1zyvhQst0=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=N57kxWGqP57hFBX+VnNIpdsOhGMTGrRjRMLcou704CFvOJaMi27R6QbrK3YRpfVS6QfdJut77VwJqpZINCFeuiVGGloa0OQ9QhpymBFz41ji1VaSHL9LiOyxsFgtElTIj6hOs9s3WS2ry9VDyabUnOA2ATASxrriGPhIrqTGX5g= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=TyBV+imc; 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="TyBV+imc" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8166BC4CEF3; Wed, 18 Jun 2025 14:24:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1750256672; bh=Cf9EAXyNK0VxD7speigkvYTyuNOgS7Co5M1zyvhQst0=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=TyBV+imcrtJiwwpbaeLynAeTh8hwcKByRSAP15DhiBFuiHAKC0I3rXELx284XWUu4 PbZs4oKwh6XtBCoxEZmvzPi88IVZC1M7U8OZ+HF4HNHMTRhZ0oAFx0nlfoUeby3Med +HmDKK27RzqYvjm4UzDdbQoEd+kaLnYJ9K6x1e/kte2HAQEnGbciewagvWUd+CrCIr PTDbwKiWZYMcwB6304zPpGfUuHd8LndCg6LJPZsBymPgMz7zT8pRAhxGRP+9ntshrr 8PJeBzExRXPb1JMNnj4f1hiZ95ogJAIUA+Sv5SSJvsUXYqLOQcZrClsXAsyrrG6d/A qLI+9FLExrKnA== From: Jeff Layton Date: Wed, 18 Jun 2025 10:24:15 -0400 Subject: [PATCH v15 2/9] 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: <20250618-reftrack-dbgfs-v15-2-24fc37ead144@kernel.org> References: <20250618-reftrack-dbgfs-v15-0-24fc37ead144@kernel.org> In-Reply-To: <20250618-reftrack-dbgfs-v15-0-24fc37ead144@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: Krzysztof Karas , 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=1088; i=jlayton@kernel.org; h=from:subject:message-id; bh=Cf9EAXyNK0VxD7speigkvYTyuNOgS7Co5M1zyvhQst0=; b=owEBbQKS/ZANAwAKAQAOaEEZVoIVAcsmYgBoUswYtRrKDTz0z/5jptbsBl6j0GRK2O1Cx7HMd fA0vrEFgoGJAjMEAAEKAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCaFLMGAAKCRAADmhBGVaC FeXnEACIiGhOyzQ/qv4M8h1JZn+mH/jIaYUe2C3dkp3GOUP+LGeFMJgy5VWMgPBZzbB6jBFWT5g KGSQbrSNDjnQ89ux0ka392dfz5/0GB91dyVfcmKqIWPEbDf9ihAoI95KksGzuYeIHqxdUwx+Lgb RDDlyYj9QY5Vo1ofaF7ixnH2Oj0bhLN92P6rHUQdJpbFGwYFs3nPyKNhQvqsmToKP5rXOw2W/S8 bYeq9/tzN/7MkUDDjVgp5WoIwFdsQ4YjXB6oaibttgE6M4PhxOWDCJbsAeokn2/ImAqn8SKdwof SqVFm97peAjTiVbZUH45yXV0vjokuHj8z8KoHMkPCLBftGY9ZbAgD8RA/t7ZIAOMNOArqAa/gVh rHL81qWVWtlC8bEQZSEJD7hfYJULnorieZeDMsbao2bDNeaE8SkYSjt1WlJLFibOoHAThoghG9v 9C6qkM29R7m8kvPcrS2fs089z7OHstiyyVFI1QGYTPv8+HqlHzwS3HxYknmXAzspSUK8zlSzWIT BYKaTgcvvC8pc5OJ5gTig6Uxk4w049FeD2kSN+ek4opuD+k6HfvLXN5mcFoMhVEUlB0Uk+6YXVf xtTQObTA3yG4zEVxpoS1J8RCKk3PBeBZnxEJJw7OLyz0xy3Az4DJsJ/6N5qIRTrR4GnjZx1x2yr IFD37GA/g4tOwXw== 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 Reviewed-by: Krzysztof Karas Signed-off-by: Jeff Layton --- lib/ref_tracker.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/lib/ref_tracker.c b/lib/ref_tracker.c index de71439e12a3bab6456910986fa611dfbdd97980..d374e5273e1497cac0d70c02c28= 2baa2c3ab63fe 100644 --- a/lib/ref_tracker.c +++ b/lib/ref_tracker.c @@ -273,3 +273,16 @@ 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); + return 0; +} +late_initcall(ref_tracker_debugfs_init); +#endif /* CONFIG_DEBUG_FS */ --=20 2.49.0