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 E44FC2ED16A; Wed, 18 Jun 2025 14:24:38 +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=1750256679; cv=none; b=YV6tnB0mDPvobg0rssU/K9MbtELQY9Z4psqHjZpJh1bJPWdTnFpmMlILp7MlIE+df+NxE5LbHKxW0OGlpPCigdr/wNaRk+iNqtPw/JXdpFdOlZla1w7J4LNa9URM8g5mriSF7hm+I8jqZ7txcMm+dFs1OhUXYXb3uO4xhS+9/To= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750256679; c=relaxed/simple; bh=fIUtfKsTxdswV0+z7NV6Nx2ljCgH4pcViNimfWT3u1o=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=IOPVJZqUXTIrkThTesKFU2vcwjbgaFe2f5/mWM0oLElKIAh8VNAtzC5qwUM62qFqsEAnXx7yUEO+ZeEq1/kdffwbBHHhoxVGp8A7db5Q1agMUoIA+X4yCD+s6JKo4VQ1S7RJifwoYYTqnIRGF/yYfQG1W3CmZ2mM6jJ8TISAOEM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=uLDIOX3H; 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="uLDIOX3H" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C1136C4CEE7; Wed, 18 Jun 2025 14:24:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1750256678; bh=fIUtfKsTxdswV0+z7NV6Nx2ljCgH4pcViNimfWT3u1o=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=uLDIOX3Hul4bZlkecwEkjoZmYKDdf+cAsfBiUohxb26sAfGNRvo3NOW+5wttooh3K EXJfS/JXysjNl4W9KvYkmGx9kiCN6wI8pTMufW6b8m7rTalI/+lrHr3vbfk5T5AYO7 w8PGQJ9Jqo3ehQ4+3WjWjnhEG3S48pmW7VlBUEfZ9L6NbHJGZfeVsF0ozKOp2iH6YN /oxlgcP7uexH3ZA00heFWEYx2j60zcgv/tT0Gf1rySR/+5azouNVEmI+lf+VzQ0KTD QjxtwmlRn/HvkOoJ7Rzf/g9bjmgkWR2/IlptGai/1ltOBP57Y4Fcj8hXoXLSPYypB6 X2NZQ/dpYZHQg== From: Jeff Layton Date: Wed, 18 Jun 2025 10:24:18 -0400 Subject: [PATCH v15 5/9] 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: <20250618-reftrack-dbgfs-v15-5-24fc37ead144@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=1919; i=jlayton@kernel.org; h=from:subject:message-id; bh=fIUtfKsTxdswV0+z7NV6Nx2ljCgH4pcViNimfWT3u1o=; b=owEBbQKS/ZANAwAKAQAOaEEZVoIVAcsmYgBoUswZ+yCe+Nq+zcQFbm7S/FnJLTnyxRZRUr9FZ Y29ppwMt1CJAjMEAAEKAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCaFLMGQAKCRAADmhBGVaC FX/KEAC6AM8ZF4tPJcB31H1Vs2JCZprZGrT8qjn779PdPnWBNhYGD+J2yXb1TiIM/dPBrIenj+Z RPOTBt+TA5pw2vPjDjFa5WZ2Nma/oqXa72+Znar/vjBoCVjP4yXEOJos6CWlwBUooSI6qZ3fyjh azbNJXMjKD+9gI+yqMCPsEPnFAtqpCzMgg01FqJaNaodtwwQfHh5jFNuOQwuJl2uyF+Y8Z2nJsB ifSUUNt8fA9dHQe0fTzaSolM3WAO+D9J0ZsXe90ZHkJMtxCcL/AaWbEDocJAgJhSxBo8iszYYON fqMh20r/IeNWYG7ZPjpyvrQE2MgT+VWxJokupoO1Ax3lrPPAGrC2cTlJ7LtrFRyAOn/H/E3tEQU Xy1DPyFuzOz/h26Z/x3B0yS8h6aJ1YS222BdgYh9PLH500SxHGPfqbf/feM93SxO+dhHSwlGa3+ cL/xwDVgNRcWmCDcpTS+hgewjrQpt1bfUwEqNcwLLTkrFaKa4gJKEvK4EOqFnj/ntfu6AI7u1+6 1B94aXDEtng4LFaXoI3n3+0ACGKnutuVNYg0Xk473x8ex7VBlquo8qMus18N0MEc+AU7o83S35+ z42G2vOGBE4U+VcLPda6i0WfwBwO8ehq+U+etyztZeREKmuIWtwfJUtOfgMY4rdTPNoxVO7m5uJ FbgrC6Up0DOQJgw== 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 42872f406b2a91b5bc611405cae7ce883fd8ed22..73b606570cce9e551d13e65365a87dc4ce748b13 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; }; @@ -301,6 +303,30 @@ 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