From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 56AAFC433F5 for ; Tue, 8 Mar 2022 07:36:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344624AbiCHHhI (ORCPT ); Tue, 8 Mar 2022 02:37:08 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40922 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240331AbiCHHhH (ORCPT ); Tue, 8 Mar 2022 02:37:07 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 232903DDCD for ; Mon, 7 Mar 2022 23:36:07 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id D1490B8165F for ; Tue, 8 Mar 2022 07:36:05 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7841BC340EB; Tue, 8 Mar 2022 07:36:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1646724964; bh=xKfgDxtalAdHsX4uwNuW8jni1gTmi1k3960oPdqc3Bw=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=tjrsTD2bR62ZjLEMJj3QR1GlnmCatbhTHEfv3fuBz7WZoKLrDGzqjCfDMbidfkRHk aBaQ8Av2uybwZNZ+B5CBNxjY2T4+qptCscUPf3/FRE8+7ni9XxVs+0ePwWwPBGgZjl 4/axYiqzkVBhAIrtMD8ic+5lqwugg+gzTl+VIatltmM60xZU0AXWoxMqFEA0+dY5yn W8h3TgdETjv5oUaKFJ+N7woF5VJ3eY13xXqk07AYv3Z7/6foDZhtWPlY31rcZzhkHr n4xisXmVvq020xsHghOmtHu2hx0UvtOiA5wZ7z91dGOQ008R+Vg1+AytkpB6FsIat9 vop0IVL3JInJw== Date: Tue, 8 Mar 2022 16:36:00 +0900 From: Masami Hiramatsu To: Padmanabha Srinivasaiah Cc: rostedt@goodmis.org, linux-kernel@vger.kernel.org Subject: Re: tracing : bootconfig : Early boot config for non intrd systems Message-Id: <20220308163600.3109f19854c7b051924f262b@kernel.org> In-Reply-To: <20220307184011.GA2570@pswork> References: <20220307184011.GA2570@pswork> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.32; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello Padmanabha, On Mon, 7 Mar 2022 19:40:11 +0100 Padmanabha Srinivasaiah wrote: > Hello Masami Hiramatsu, > > Thanks for detailed explanation on boot time tracing using early boot configuration file. > https://linuxfoundation.org/wp-content/uploads/boottrace-LF-live-2021-update.pdf > > Also for https://lwn.net/Articles/806002/. > > Latter link also states we can embed boot config into the kernel image for non intrd based system. Ah, that was an original plan, but since no one interested in, I didn't implement it. So we still need the initrd for bootconfig. > > I tried searching mailing lists not able to find pointer for same. > > A hint/pointer on how-to will be very helpful. BTW, what is your problem, could you share your use-case? Thank you, > > Thanks and Regards, > Padmanabha.S > -- Masami Hiramatsu