From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bmailout3.hostsharing.net (bmailout3.hostsharing.net [176.9.242.62]) (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 354BB258A; Sat, 26 Jul 2025 07:55:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=176.9.242.62 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753516535; cv=none; b=deVx8K7RZ8R8yQV353dCII6oEphyfegS5vg4DedD/HxLe9hP1MzP20fSATD/t+xEN0ssHXIWRqI+Pz3gP57xjpXPa3x5GNlBpuOawbfA5EXoVpie46+gtXdcOhpD6eNS1EIwE8PuK+i5nwcEWXyHdyaXug2k1xTFOTc9gNWOiBw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753516535; c=relaxed/simple; bh=KsSC6tscOO6pxZLOiKZD54JjV+mZXJxDUbIzS32S1cE=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=m4LVjlO3QW+gcyWy/waiTaQ/DTBCLcrzAXhi5DxYF+nkoOhkIZxrDIQqi/IL5vQpqsekfbOejtm9cqZCzUXLdwR9qlxbT346tyaPQs9M+OqIdmVMwvuvlDCFiJJ7NKrPtf++BJatNZQsi/rO6Klcz/lsQOxWPdrFmrJs05+2Kws= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=wunner.de; spf=none smtp.mailfrom=h08.hostsharing.net; arc=none smtp.client-ip=176.9.242.62 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=wunner.de Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=h08.hostsharing.net Received: from h08.hostsharing.net (h08.hostsharing.net [83.223.95.28]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "*.hostsharing.net", Issuer "RapidSSL TLS RSA CA G1" (verified OK)) by bmailout3.hostsharing.net (Postfix) with ESMTPS id CC3C82C0710F; Sat, 26 Jul 2025 09:55:24 +0200 (CEST) Received: by h08.hostsharing.net (Postfix, from userid 100393) id 924F02ED3D9; Sat, 26 Jul 2025 09:55:24 +0200 (CEST) Date: Sat, 26 Jul 2025 09:55:24 +0200 From: Lukas Wunner To: Shuai Xue Cc: Bjorn Helgaas , Matthew W Carlis , Ilpo =?iso-8859-1?Q?J=E4rvinen?= , anil.s.keshavamurthy@intel.com, bhelgaas@google.com, bp@alien8.de, davem@davemloft.net, linux-edac@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-trace-kernel@vger.kernel.org, mark.rutland@arm.com, mathieu.desnoyers@efficios.com, mhiramat@kernel.org, naveen@kernel.org, oleg@redhat.com, peterz@infradead.org, rostedt@goodmis.org, tianruidong@linux.alibaba.com, tony.luck@intel.com Subject: Re: [PATCH v8] PCI: hotplug: Add a generic RAS tracepoint for hotplug event Message-ID: References: <20250718163532.GA2700834@bhelgaas> <25285fbd-ffab-49e5-a8be-e3a1c8e70d3c@linux.alibaba.com> Precedence: bulk X-Mailing-List: linux-edac@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <25285fbd-ffab-49e5-a8be-e3a1c8e70d3c@linux.alibaba.com> On Mon, Jul 21, 2025 at 09:17:55PM +0800, Shuai Xue wrote: > 2025/7/19 15:11, Lukas Wunner : > > PCI links can be tunneled over Thunderbolt, in this case the > > link speed is fixed to 2.5 GT/s (USB4 v1.0 sec 11.2.1), but > > in reality is governed by the speed of the Thunderbolt fabric > > (which can even be asymmetric). Do we want to report the > > virtual 2.5 GT/s in this case or the actual Thunderbolt speed? > > Or do we want a separate trace event for Thunderbolt? > > I'm not a user of Thunderbolt, which way do you prefer? Keep reporting the virtual 2.5 GT/s in the PCI tracepoint and maybe add a separate tracepoint later in the thunderbolt driver to report the Thunderbolt speed. Thanks, Lukas