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 721D422CBFD; Thu, 29 May 2025 15:21:26 +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=1748532086; cv=none; b=icy2AQJpy5SK6uIugLLHtc+b+auXGlZC1lPake+SiIbfqyml9RlMw5ukTgv7o4hdPHmqLBoB9edSvpcpvD2GCUw8Moyg94MJ9BBeHz10g6HobPdFrHQlUzDRGtP7EEpWx35XgYTNJd8wy7b5yhcgibL5r5vLJOThA88GxWr4ib4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748532086; c=relaxed/simple; bh=wAehig3CgK9jQX57OpnOj7ZF1fb8ByqK1MLiGa6luaQ=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=D3NxikYZrP7/w63h552drDfFYoKXkuZzHlugp85HnNnW0ENNt+gxSNtIK0Wsnvolt8CIN38H+vmFnhcMDnTmXN8373pCNNWJFX2FAG5ztzRcJxts+lorNPiZssVuVobtQ3NX1aUgSPMieHzZKKipTl7AclzDXhYxcWni1rPKdiQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=AUJfCWin; 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="AUJfCWin" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2CA12C4CEF1; Thu, 29 May 2025 15:21:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1748532085; bh=wAehig3CgK9jQX57OpnOj7ZF1fb8ByqK1MLiGa6luaQ=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=AUJfCWinRxeYJMpUbnSVZmKU29TRH7DsfLVZM6V1GoQzqe3Qf7kGO6IsRrcrjYvzy lj7eZ173IoRx8CqaTtrLPpCPtbpf++AsPb8uR8Rs16ZNEfjamPPKgCIRIAGabxoaOp QzA4Oj25jx6o9gofgITRcfc7/N/59/ZcCpSSkKGmqgdB7b/bn1dc+dw3SnzsYE6TAj zxf5HeM9Yg77GQbi/O54/PitKeqC6+e5prwYTfSRFy0NHpJnLC+aujQBXUx2HA8+bX GXbUShWZtBHRtV/daSxEiZ5Q8ISMjpaKwJA87bIHdegJw8z56EHqJPUE6tIPeTB+Wx wJjja7s0E2QSg== From: Jeff Layton Date: Thu, 29 May 2025 11:20:42 -0400 Subject: [PATCH v12 06/10] 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: 7bit Message-Id: <20250529-reftrack-dbgfs-v12-6-11b93c0c0b6e@kernel.org> References: <20250529-reftrack-dbgfs-v12-0-11b93c0c0b6e@kernel.org> In-Reply-To: <20250529-reftrack-dbgfs-v12-0-11b93c0c0b6e@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=wAehig3CgK9jQX57OpnOj7ZF1fb8ByqK1MLiGa6luaQ=; b=owEBbQKS/ZANAwAKAQAOaEEZVoIVAcsmYgBoOHtmzR4/zvXVJiDIizB6A00wECexd05651FxB FkIGUYsN+qJAjMEAAEKAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCaDh7ZgAKCRAADmhBGVaC FVCNEACtlOsXCW3GVxf2Wx7xqW+9KmPWxOfHnhPhoxg7+CO9kknQhM5OMrorNc8T8+4DLRKfWCp H9wxTThj0zwwJ8B6aSbdkUzrv3aDuDN0WbuF7DZLl/7a3wLN3DCaij85SCjOyWXV6xE68eZmYDa As3znfb+TSViw4ML2GrMlVutWxIRTKjUMcWYJv71DOSSFaAAgKHGJ7DXvps3rrJu1yG8mswGn8j Hief9f1x3IBuMjNr8+2d1bSuFK0PhUbRRSVpsI9F1pINJyohmDW8Nvd63W/2xFYOPsNd3KqXIhM /7GiEaXllnlB5qAXotuL5fHy5loZSE+WQ0JTwhvXOG5s/g9xkHhcoM1gd7MS1YTYUbY/xK1i6Pr PjIu0/Dr+46y6n4ceF7MIi5QVGQ1qSiFJHyDuu48HVoxvCGrIPtK2DPX8v+QVXItprPzx/nSqE/ UTWa1Qhhksrlddn1KdbeF2J+4PSRpLscm0IQc6ggECzvkcNrEKoqN2kvEQMJgGuC1winO75gYi0 wmgGitraq3JfWFrASSHW08f/+6SYuF4d1Z4t96sfpu7KHgpEZwwxpropWR4B7LGs+FmirRocDAz d4CPE4o7jhVGZs2mFeVzd2sCr+Z6eefJ8oEU22Im4jVMwPblW+vP8VWu1eZjKQkIIwK+OwhmI+q wiYA05H6hRTvlWA== 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 4f2112b001de3049ed542ea3c4f2bc1e9cce6043..5fed791da84f523500d2edf262fbb20adbd921bc 100644 --- a/lib/ref_tracker.c +++ b/lib/ref_tracker.c @@ -8,6 +8,7 @@ #include #include #include +#include #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; }; @@ -300,6 +302,30 @@ EXPORT_SYMBOL_GPL(ref_tracker_free); static struct dentry *ref_tracker_debug_dir = (struct dentry *)-ENOENT; +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 *seq) +{ + struct ostream os = { .func = pr_ostream_seq, + .prefix = "", + .seq = 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 = debugfs_create_dir("ref_tracker", NULL); -- 2.49.0