From nobody Tue Dec 16 14:22:29 2025 Received: from relay6-d.mail.gandi.net (relay6-d.mail.gandi.net [217.70.183.198]) (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 3A7091CEAD6; Thu, 6 Feb 2025 18:15:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.198 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738865735; cv=none; b=Txvpiv0BtCmTig9FOmc7sdteX9W+tgwjV59eNrNGcIW+IxT0bc3/lK3LQ6z3YeSzPgiYfaLWwJYpu6zwNtoSb49biWXxlfO5/Vhn90mB2PTJbCrpDhsqZp9QI8fCGT0ZmvLW+oLD30TufO/8y9UiW+2QLWSMV9E3rn0pdlT5Fvg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738865735; c=relaxed/simple; bh=0NGhSoYy3BOkD4zbUMddeQE+38m2VrRDHQ3KGLENpuo=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=X78N7n2tuY6WfDQjd+6+qT01b0bOChKe9KLztGCrOfCt95mHozavVGFf1heExzTiNMGbommWPhdNweQeq+7XR8XflXI/fOIRyiXe1EwSUmeH3o4RLpXMF5IzFl+YngU/Ymht53VCHv+9fJXpVpF4nAQ7+/lFZpDepjBaQ1L06Hc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=pR9z6iaM; arc=none smtp.client-ip=217.70.183.198 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="pR9z6iaM" Received: by mail.gandi.net (Postfix) with ESMTPSA id 0594443297; Thu, 6 Feb 2025 18:15:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1738865731; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=W1dyvuSoKzEddJsfYldzEVfa/MmYSJUDzhZO1Mphdyc=; b=pR9z6iaMA4MmRIYCSeFn2g3o4cAlKmx6c7dA5IoxSDVWChae97WHa4QMSqirikSPUb8jsy IHkBsZEGkNMDMuQPANYstrdBMqlkQNH3I8Sd9bR49WLvrNlL26nGMKavjdRTdllvdjdPQq mEkHV+FmwisCxQX0vVETwEP6roQxsxZxbz5YoNciVTLWa7hatSw9cIEoCgVbDxWrSwB2GI Iv4su/iIbW72fctloDmbmuKXXInFumtxjj3aMJOSFpMjJaxFZDFRBl21jJ0kvbnIjHtvFo kbXrg07BtFCC/MCY5Ba/vNjQVEtYxVnbrCtBagh77SaFDoT+UZEfQT1CvrjssA== From: Luca Ceresoli Date: Thu, 06 Feb 2025 19:14:35 +0100 Subject: [PATCH v6 20/26] drm/debugfs: bridges_show: show refcount 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: <20250206-hotplug-drm-bridge-v6-20-9d6f2c9c3058@bootlin.com> References: <20250206-hotplug-drm-bridge-v6-0-9d6f2c9c3058@bootlin.com> In-Reply-To: <20250206-hotplug-drm-bridge-v6-0-9d6f2c9c3058@bootlin.com> To: Simona Vetter , Inki Dae , Jagan Teki , Marek Szyprowski , Catalin Marinas , Will Deacon , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Daniel Thompson , Andrzej Hajda , Jonathan Corbet , Sam Ravnborg , Boris Brezillon , Nicolas Ferre , Alexandre Belloni , Claudiu Beznea , Jessica Zhang Cc: Paul Kocialkowski , Maxime Ripard , Dmitry Baryshkov , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Thomas Zimmermann , David Airlie , =?utf-8?q?Herv=C3=A9_Codina?= , Thomas Petazzoni , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-doc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Paul Kocialkowski , Luca Ceresoli X-Mailer: b4 0.14.2 X-GND-State: clean X-GND-Score: -100 X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeefvddrtddtgddvjedtkecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfitefpfffkpdcuggftfghnshhusghstghrihgsvgenuceurghilhhouhhtmecufedtudenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhephfffufggtgfgkfhfjgfvvefosehtjeertdertdejnecuhfhrohhmpefnuhgtrgcuvegvrhgvshholhhiuceolhhutggrrdgtvghrvghsohhlihessghoohhtlhhinhdrtghomheqnecuggftrfgrthhtvghrnhepieeiuedvffetgfeuudelheeutefggfejieettdetteekueeuueeukeevvedvueevnecukfhppedvrgdtvdemieejtdemvddtvddtmegvrgdtudemhegrgedtmedvughfieemrgdulegvmedutgejgeenucevlhhushhtvghrufhiiigvpedukeenucfrrghrrghmpehinhgvthepvdgrtddvmeeijedtmedvtddvtdemvggrtddumeehrgegtdemvdgufheimegrudelvgemudgtjeegpdhhvghloheplgduvdejrddtrddurddungdpmhgrihhlfhhrohhmpehluhgtrgdrtggvrhgvshholhhisegsohhothhlihhnrdgtohhmpdhnsggprhgtphhtthhopeefkedprhgtphhtthhopegtrghtrghlihhnrdhmrghrihhnrghssegrrhhmrdgtohhmpdhrtghpthhtohepshdrhhgruhgvrhesphgvnhhguhhtrhhonhhigidruggvpdhrtghpthhtoheprghlvgigrghnughrvgdrsggvlhhlohhnihessghoohhtlhhinhdrtghom hdprhgtphhtthhopegtlhgruhguihhurdgsvgiinhgvrgesthhugihonhdruggvvhdprhgtphhtthhopehmrdhsiiihphhrohifshhkihesshgrmhhsuhhnghdrtghomhdprhgtphhtthhopegtohhrsggvtheslhifnhdrnhgvthdprhgtphhtthhopehsihhmohhnrgesfhhffihllhdrtghhpdhrtghpthhtohepughrihdquggvvhgvlheslhhishhtshdrfhhrvggvuggvshhkthhophdrohhrgh X-GND-Sasl: luca.ceresoli@bootlin.com Now that bridges are optionally refcounted, it is useful to know about that in debugfs. Suggested-by: Dmitry Baryshkov Signed-off-by: Luca Ceresoli --- This patch was added in v6. --- drivers/gpu/drm/drm_debugfs.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c index 7424d5237e7615d63de6bba572ee6050da6709d0..629074247ffec4fa18df7af2d90= 23255abed501c 100644 --- a/drivers/gpu/drm/drm_debugfs.c +++ b/drivers/gpu/drm/drm_debugfs.c @@ -743,6 +743,12 @@ void drm_debugfs_crtc_remove(struct drm_crtc *crtc) static void bridge_print(struct drm_printer *p, struct drm_bridge *bridge,= unsigned int idx) { drm_printf(p, "bridge[%u]: %ps\n", idx, bridge->funcs); + + if (drm_bridge_is_refcounted(bridge)) + drm_printf(p, "\trefcount: %u\n", kref_read(&bridge->refcount)); + else + drm_printf(p, "\trefcount: N/A\n"); + drm_printf(p, "\ttype: [%d] %s\n", bridge->type, drm_get_connector_type_name(bridge->type)); --=20 2.34.1