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 5C8B429A2; Thu, 2 Oct 2025 06:26:45 +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=1759386405; cv=none; b=u+Xck5HSyBvcshjUxg9cu/9nty0zk5vVjdHzYJPhmTo7CM4rJuyo1lBwZHNxZKsojB3MvPL3n5y4FO5+rHs0qyh3BEmMj2db9kkkqexKCf7nhn850I0Lsb/CI8kcnc1R7AnKRoblcNBN8XMCc2p0BWHyPsZTKlrhEEYQeGWe1GM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759386405; c=relaxed/simple; bh=IN5Xoo6ynmRa7LHQ4OoMu5qgHy4kkgfiKHhscIHLLGA=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=hURuQ0MzSuoJmiz6LlDXP17Y32jE/iV0GZEZmpV18S2z4pIVPaM/XCXaG9Lb1W/BPwsy6JrqqgVTRnyv/fW6baa6FGVdy9TYaueAe6AAatKPvolR2i2EH6hyJuhlirLrU6qP5uZLiKyYRIsa0JawES4SgQAlziT8K30QVGiNuCU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=c/AUu82Y; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="c/AUu82Y" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 61DD5C4CEF4; Thu, 2 Oct 2025 06:26:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1759386404; bh=IN5Xoo6ynmRa7LHQ4OoMu5qgHy4kkgfiKHhscIHLLGA=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=c/AUu82YtjB+tKa0eWLCJZ23oK0HvGv4tnzg6Etc05laTDdawViQrxEzaLmmEuZXS xnl4e+rU9HzXQUaOvMV3muddBxo8wbHY36pm8skkpm1H69s+8iS3SRgS0RFa4kM6aM umt1+XXCVDs0R8Uv3740jkOnL1+37ACDfGdpKa0U= Date: Thu, 2 Oct 2025 08:26:42 +0200 From: Greg KH To: Anup Patel Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Paul Walmsley , Palmer Dabbelt , Alexander Shishkin , Ian Rogers , Alexandre Ghiti , Peter Zijlstra , Ingo Molnar , Namhyung Kim , Mark Rutland , Jiri Olsa , Adrian Hunter , Liang Kan , Mayuresh Chitale , Anup Patel , Atish Patra , Andrew Jones , Sunil V L , linux-riscv@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 00/11] Linux RISC-V trace framework and drivers Message-ID: <2025100208-challenge-protrude-d6c3@gregkh> References: <20251002060732.100213-1-apatel@ventanamicro.com> Precedence: bulk X-Mailing-List: devicetree@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: <20251002060732.100213-1-apatel@ventanamicro.com> On Thu, Oct 02, 2025 at 11:37:21AM +0530, Anup Patel wrote: > This series adds initial support for RISC-V trace framework and drivers. > The RISC-V trace v1.0 specification is already ratified and can be found at: > https://github.com/riscv-non-isa/e-trace-encap/releases/tag/v1.0.0-ratified > https://github.com/riscv-non-isa/tg-nexus-trace/releases/tag/1.0_Ratified > > The RISC-V trace framework and drivers are designed to be agnostic to the > underlying trace protocol hence both RISC-V E-trace and RISC-V N-trace should > work fine. The discovery of trace protocl parameters are left to user-space > trace decoder. > > In ther future, there will be subsequent series adding: > 1) Sysfs support why does "trace" need sysfs support? No other cpu platform uses that today, so why is a new user/kernel api needed? thanks, greg k-h