From nobody Wed Dec 17 10:18:17 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 0C39323BCEB; Fri, 9 May 2025 15:54:36 +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=1746806077; cv=none; b=dVVQCrh19xEzy/u3ZtVMaocv0j7OCWOLwssCTR4lJnCKo5s+zxw5DXA5XFJhvFrX4jL2q6+/THWGGVWx4HnpXf/59ZfNFH5cT0QqELQZEpR/NjcUytSlADO3wwKMMSgBk8ouqbalyOVnHqKYur9EYS6Uo8QVcVzJ5tIpSe1ebxs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746806077; c=relaxed/simple; bh=sWMiF3Jp8psrx0vXllDtK7/+QK0kGDwaFLz+zCQWWb4=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=II/iU6rti1qK+noeWyaDiGsBWGDNd0HLdWl/JRlRRTHmzyZxFfJbnggA6dabGMiMjS1HlFjfA1PQmWRvpJKf2Hwn4o+s3rECsXmsULeD3JnOT15OHukdBAstAtClzdBtyNFhC4T8mdOo2Wf6LKoHjaL7jZ0uXHqJTAxtnaxcxBs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=FdYc6wGX; 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="FdYc6wGX" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BC809C4CEEE; Fri, 9 May 2025 15:54:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1746806076; bh=sWMiF3Jp8psrx0vXllDtK7/+QK0kGDwaFLz+zCQWWb4=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=FdYc6wGXzjoZ6u3vXZIf8g6zVkhBwOmJtr+YkHPGfu2pXxSwrdf0zDYW7d7m7iitj waV+8VU0TT10GfWvRBNc9HiHZWEDAthLOvDPreJj/3BQLO6TvZMom8LvoNHPfvyO5f eVV8lWvLqWNg58rIACQPnyXehErbQWLTN+RhqRk9Xi4etyg8uGUHZsn3Kg5WgCPiNU y4BsBhsXLniFjZNsMKhOUncqNR2ZmP5c4+IQlEoaL5OTT+RKzmH9lfS74r7/NCcntt 7Lb8rS5F4c4Sq3iB/N/GhWoEoPj7oY4WjjoC70Wvn51NJLb8Gr0JnM7XvF4VjjS/pY bIVSmglofuvQw== From: Jeff Layton Date: Fri, 09 May 2025 11:53:41 -0400 Subject: [PATCH v9 05/10] ref_tracker: allow pr_ostream() to print directly to a seq_file 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-v9-5-8ab888a4524d@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=1919; i=jlayton@kernel.org; h=from:subject:message-id; bh=sWMiF3Jp8psrx0vXllDtK7/+QK0kGDwaFLz+zCQWWb4=; b=owEBbQKS/ZANAwAKAQAOaEEZVoIVAcsmYgBoHiUvc6qXkXEuPAP/QG0yVt5dTxV6dRCnl6RMT ewbnZ9QnySJAjMEAAEKAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCaB4lLwAKCRAADmhBGVaC FRXwEACOC5PnMHjcA+Xp+51Azu9umR+YbygrApiT3qtRp7EMUbqeTPyHk+9qW/icE9JtjXoMbL3 jrWIAz6akpmLPl+wAIbL67qM3T4OOZ/VULF5sieGn8A5J3O1kUknEWKvTOHtE2n+OAueBW3/0HO tFDYv9hue2fl3vh+Fjhr0Ei3VgHfYChKiyiTDdOb5DnsHGzNd019ste/UZb5j92vRtwYbD/JEdr DEq6I03hXkVV8QulIk/xlq7JfDfcIvcjWlsXa/KgIcdMH58Rj12u3HgdP6j15JeWs+yphZ+IvEz c3R3Gnchejk+DcWnTMkrFdvSGSLpZpsu00Cy7mgd0FOGoXj/JldcIF/0M8XPJmJDtZGjBtM/WgT WvRe43Av9/oBAZu88YT6M/SDRqKpCebRWPBrLo4LmPU+T37hO1BsrKGgfvEb2gCMFQI4pvmNzH4 wtiKOBSV/w0ZLTMLkn0VMYEUdqNjEN+T1ByyOJANm3/YUZsmJH0YGSqxaGZw3aKN2/hdpvNZHTr Q7MOm8mbwymR80YSHK2EK8Jbzda+Xc+nsRTgC3dIXhrPOaDkgY4yNeiXCNNsRc5+FVaDEEaTU4X HnLpTTb/Si5Xso6PPx0wPCi/AxjGoKaE5YUYM7mOz2aRDgpxmRaaHRbwGS/Iz1pmtyQHop8InA6 Orr6HaJTc3aKo7A== X-Developer-Key: i=jlayton@kernel.org; a=openpgp; fpr=4BC0D7B24471B2A184EAF5D3000E684119568215 Allow pr_ostream to also output directly to a seq_file without an intermediate buffer. The first caller of +ref_tracker_dir_seq_print() will come in a later patch, so mark that __maybe_unused for now. That designation will be removed once it is used. Reviewed-by: Andrew Lunn Signed-off-by: Jeff Layton --- lib/ref_tracker.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/lib/ref_tracker.c b/lib/ref_tracker.c index 607718d00ffa74bd6d9abf97e913abcfd56dd1c8..6e85e7eb347d86775ba38a72dad= 7159f9ac41ed9 100644 --- a/lib/ref_tracker.c +++ b/lib/ref_tracker.c @@ -8,6 +8,7 @@ #include #include #include +#include =20 #define REF_TRACKER_STACK_ENTRIES 16 #define STACK_BUF_SIZE 1024 @@ -66,6 +67,7 @@ struct ostream { void __ostream_printf (*func)(struct ostream *stream, char *fmt, ...); char *prefix; char *buf; + struct seq_file *seq; int size, used; }; =20 @@ -300,6 +302,30 @@ EXPORT_SYMBOL_GPL(ref_tracker_free); =20 static struct dentry *ref_tracker_debug_dir =3D (struct dentry *)-ENOENT; =20 +static void __ostream_printf pr_ostream_seq(struct ostream *stream, char *= fmt, ...) +{ + va_list args; + + va_start(args, fmt); + seq_vprintf(stream->seq, fmt, args); + va_end(args); +} + +static __maybe_unused int +ref_tracker_dir_seq_print(struct ref_tracker_dir *dir, struct seq_file *se= q) +{ + struct ostream os =3D { .func =3D pr_ostream_seq, + .prefix =3D "", + .seq =3D seq }; + unsigned long flags; + + spin_lock_irqsave(&dir->lock, flags); + __ref_tracker_dir_pr_ostream(dir, 16, &os); + spin_unlock_irqrestore(&dir->lock, flags); + + return os.used; +} + static int __init ref_tracker_debugfs_init(void) { ref_tracker_debug_dir =3D debugfs_create_dir("ref_tracker", NULL); --=20 2.49.0