From nobody Mon Feb 9 00:54:21 2026 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 CD1B7297A5B; Mon, 28 Apr 2025 18:27:08 +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=1745864828; cv=none; b=mcPNWtLp04dQhBDCf8lnvR1fXHQ8E9cyToxqbgmKY7F9XEABSFj7LCTwdsdXPeMrmdBQ7yzD5UIuTkUswcp+nqVcrluEoGVxbdL4y8fkblgVpdCwgida7bRa+yYkQE0H+ETNlG7p24Ru7p3nE8GxSaU29prn/7K7u5m7w5Runi8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745864828; c=relaxed/simple; bh=fZKlpIcOJEF616o9qzMIcvZOI/oG1RfsOsr5fOV2mTY=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=jgt365IHnis3WjA/YvfPmNu8FbAFYLY4Pe3EwhJf3UBcqzHxpJP4LU2zOaivarjdrQm+/zOFqKr3K8L2NiDYTs+zUf12UHtIFgj4pS00gZCqYP4lRmiDhEbAyZ2wv0xNdJZ0vb4yLGl/LKOlLZXyfZ5PP9g8X8ykSWzqJbMTuwc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ItJW/ApR; 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="ItJW/ApR" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CF877C4CEF2; Mon, 28 Apr 2025 18:27:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1745864828; bh=fZKlpIcOJEF616o9qzMIcvZOI/oG1RfsOsr5fOV2mTY=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=ItJW/ApRtFZNn8Pqn0PWf5YpYdYsk5BXh98Hnctw2dako7/BsLN+yRGp/nVrJTLTp HuX1P37y9/HQ42hbKrbuaxWa+k4P3An6hpBe8Y6RHkLEmOY74FT/RqBZ/K/ItdfFyI X6W+uQU1U8HYIPZlCT0EYDIC0PVVrq/7ch/PhgmBi+YSbmm41nGGZlsCmTqA7XnoKT bRYgVxrukMqkH9+U+2jqoa+3wzV84NVZPaQS5Rf/qI7g47qnMe4yyXIMgeHmOMQ8Ss 8CK1s4V+R825UJiRISB6HUUygAxOh2EE8F4NDicauTgSnrt3RMV3pzRRedB9bQMr6G 80HEcEERy9gJA== From: Jeff Layton Date: Mon, 28 Apr 2025 11:26:27 -0700 Subject: [PATCH v5 04/10] 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: <20250428-reftrack-dbgfs-v5-4-1cbbdf2038bd@kernel.org> References: <20250428-reftrack-dbgfs-v5-0-1cbbdf2038bd@kernel.org> In-Reply-To: <20250428-reftrack-dbgfs-v5-0-1cbbdf2038bd@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=1942; i=jlayton@kernel.org; h=from:subject:message-id; bh=fZKlpIcOJEF616o9qzMIcvZOI/oG1RfsOsr5fOV2mTY=; b=owEBbQKS/ZANAwAIAQAOaEEZVoIVAcsmYgBoD8h19lmvXGTuNFcSN5fIMVwJMgTnbS9ux8eeC 9Smvy1t8q2JAjMEAAEIAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCaA/IdQAKCRAADmhBGVaC FdZpD/9wFVujdvH6ipX25y57L5uQZU/l/dal5kV1364+dlMrFDwCExdLvbXQJclwLlzOnkGKXQw lSedyy9xO5/QjCKxbveMsqGstv0uqyENt0uqsFhzmtyAU4Z2UFcFRxGE2qQJ6ccdxFXb12WsULh 3RWPDrgdZBQCrjeublN6njJdjEgg0CDo4OEotR+TDI38x71uYXRG/TB5SNRsY2T5FlOfMrgoF98 1ANLNmsaLi6sr1IfIIAVp7Zf2kmXBZBwpisqWZ5jizuea7ZmDfSWHbL0dFpBO1SdhZCmeY4Es+/ I+k3mY2IrJEFxwSUHHDL0X2/NloauEVq8qmBFkj/JuVCN9LaZ2FJ9wsMqXi+SRRBzyvSCiaIn7P JFTkQSeLJt7KrcC/4f/fRvhCtBUTJ4OztkOfv2YGDSBzZVyLZqzvbQ6tib3Z58TZGJ2+ThUdHci oyP96WTKknq3CTTrACZv5doziX1v0mZUs+Xe3jybtSrOEocmJVCRkm77u3mbxp+LpLH77hZPnIf h4GRUmfPh+t6wnMO7AiM3L1a5k4QzT0Ci7SJk5JfzaWnv0g2vvL+a/1zaeDfAaep1vY9zYayY9Z Z0HVST/xtbwoWkIzyNReQHC44rAA2zY1aB/4FJxAUt8G11WBDN7kemAMh75M/FM/BF2Jwx4rPgf fcVwGbNnM79rzLg== 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. Reviewed-by: Andrew Lunn Signed-off-by: Jeff Layton --- lib/ref_tracker.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/lib/ref_tracker.c b/lib/ref_tracker.c index b6e0a87dd75eddef4d504419c0cf398ea65c19d8..4857bcb6d4bf557a0089f51328e= 75e8209e959e6 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 @@ -70,6 +71,7 @@ struct ostream { void __ostream_printf (*func)(struct ostream *stream, char *fmt, ...); char *prefix; char *buf; + struct seq_file *seq; int size, used; }; =20 @@ -93,6 +95,15 @@ static void __ostream_printf pr_ostream_buf(struct ostre= am *stream, char *fmt, . stream->used +=3D min(ret, len); } =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); +} + #define pr_ostream(stream, fmt, args...) \ ({ \ struct ostream *_s =3D (stream); \ @@ -302,6 +313,20 @@ EXPORT_SYMBOL_GPL(ref_tracker_free); #ifdef CONFIG_DEBUG_FS #include =20 +static int ref_tracker_dir_seq_print(struct ref_tracker_dir *dir, struct s= eq_file *seq) +{ + 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