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 5123F28B4E1; Wed, 28 May 2025 14:35:00 +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=1748442901; cv=none; b=PXMkRcsVhiMgBwwTa28KO6nZUt37WLHsJTztCUXt52J1eNnUc7nSP4TVdkTwsFALXT3S+lv7SmjzrWWnHGlmAAT54dzQj4youSzi61oFUN2+CzsnFY6KJ+nqvEfggAWbiDyRIQrbDJldIic+eXYQuNQ8jrZmLHKEiSLtqE28iHQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748442901; c=relaxed/simple; bh=sWMiF3Jp8psrx0vXllDtK7/+QK0kGDwaFLz+zCQWWb4=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=rN33e8+6ZDx9h2NBFL1rcZFM3AutmRv6hFXVnwvQaKO9zN2acPN+9tDI7ogmeBfLD0HxKN2BLALvi/0KVXtuWINrnPB3Rng52PqEAXj6vByx6a0cjw+kjv29dd5nfGlXHUzziv0AIHWy6L2ymREkAnK3dhPOBZf1hsvs2NNUoCE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=mHjl3DmV; 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="mHjl3DmV" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E89A6C4CEF1; Wed, 28 May 2025 14:34:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1748442900; bh=sWMiF3Jp8psrx0vXllDtK7/+QK0kGDwaFLz+zCQWWb4=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=mHjl3DmVqOyQj6LIFz1SYtL1YCu88illwSUyBb3Fs85pkmZd8jgBYjY8/Di8VV1TC cft1is6xV0F97gBWe6Hf6WcILD5OyOg+IfVZ7njcjJGs62oRwbCRkeZ77eFLLBOOt5 cK06+3Ll5DO/CnXy1DXG5Ge1O+HhY9zhO0U7wwuk1zr0oN9Xrn7btjsbwgZmJr1ZCJ S9TzVruOdr3B+CfrwWoT4r+RUFN9ypZLZsvpklraFBEkcQ5beMTSlNHPWVJTK2h9yi QW2ky0/gkanEh2f1R7P5oS6nCDbRPt1UVCO0mC0UEjjXjsPIXMUY/s1uB0vNwqW35u +CgvgK+LuxzQg== From: Jeff Layton Date: Wed, 28 May 2025 10:34:38 -0400 Subject: [PATCH v11 06/10] ref_tracker: allow pr_ostream() to print directly to a seq_file Precedence: bulk X-Mailing-List: netdev@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: <20250528-reftrack-dbgfs-v11-6-94ae0b165841@kernel.org> References: <20250528-reftrack-dbgfs-v11-0-94ae0b165841@kernel.org> In-Reply-To: <20250528-reftrack-dbgfs-v11-0-94ae0b165841@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/ZANAwAKAQAOaEEZVoIVAcsmYgBoNx8FcfDlMWQ2oIJlhlzWQq8wxdlXVv6cgcDK3 X8YzGsS6mGJAjMEAAEKAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCaDcfBQAKCRAADmhBGVaC FRO6D/4yuAvBXbS8oPQDp0cb7e/vofNMacyg+14J1yzPF6XORw47ErSf/ZW9xe/NgwYevYJQ78P gRJvJXQk/AwtF5EXg6eTvHALZsVOrm+RkgSzH9qkVNRo8fJY0T0v0yMpMt0+VcPf16ZB0/J7ewD AErr7so25xZw+muohmbh66c649lnV6GcLtqhy3mvHiXu6pJk8rzucB0NLZMbcL0084OpwM5gPMy 0J6MzjgWv6tHIRkpYGwPWo7HXvMS/q7cu5SARdM8DMal9lagZJ0Pe5B+J1H92MnkiQ0N9OpaG4F otCUEZmbNMoyMGxotMBH/hka7x0qVe5B9xituxJcU+m+8lb01TJU4RrAEZ2X9Zd9RLlQQyMLQyK Ayxjn9Nd95zLliHUXdWY7+9quncGzBeYrhCiurUfMKgw6CCgVBDw8Nm79pUkrBMTiPVCNUMBEi+ EHYE3oCAHefmtkG4w27ozGyYtCWWYio+e5wCBLKX4hf5JZDRBJ4QJIN1a7OiePgnjWzqELojuwi rpod4tJJdEIIkYr4tKTDoarn1WgHvXshPSinVO9gSTy5ArvHUksk6RTh9mPTKmwcef/WjP046/l kg5dmaug7Vvt2Ad/kWQ4CNbBjtpAGYtkyoAcasvgmAgL5U24ePJrN9VZPjO8wjC3xQpOYRpQJC7 5RzCxJUsoyFr83Q== 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..6e85e7eb347d86775ba38a72dad7159f9ac41ed9 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