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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7502ACA1007 for ; Wed, 3 Sep 2025 01:55:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:MIME-Version: Message-ID:Date:References:In-Reply-To:Subject:Cc:To:From:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=VLFZuz30dpa79lpxVcrr60HQRnKxDWtLmNqx3vgx7b8=; b=Yey2X1P5LUf8eCSOnfmM7mwmyl xKEwuSXTTWm4E+1MZiQR6LprLJWoonBHxzfc0uc/J1RTFfPSA5emfVnFLz5FSj4g8u4u6YwHaUuQb aRAv7/5hMkUibWmj276ItrFFiVgInZIBrPpx6/Xfm42ZPGQybszWDZgcmmbNJ2/fvnPt658QanczX FFOU1RkdRhhhxtU+tdOj/6stctaSum9805xevpItD6rpfRriyjlTk+dN/J4G9qU8nv+eOEzBscq06 UVc6GDVBfNW3XRAQfpMYcnirwAn+gosgiJ5frUZqhmagIzC2feYImsevqgJ2m1gzulTrE8BJTsUiO SJmKOiaw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1utcj0-000000038mx-0mgt; Wed, 03 Sep 2025 01:55:50 +0000 Received: from galois.linutronix.de ([2a0a:51c0:0:12e:550::1]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1utYbm-0000000285U-1dbs for linux-arm-kernel@lists.infradead.org; Tue, 02 Sep 2025 21:32:08 +0000 From: Thomas Gleixner DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1756848722; 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: in-reply-to:in-reply-to:references:references; bh=VLFZuz30dpa79lpxVcrr60HQRnKxDWtLmNqx3vgx7b8=; b=Zv6yiOduGnjJ0WqWe1gJI2sWO+xJHM+9mryM69iWW/x9MXGRG/dmEb5UMxHnC0JqY7VHbE KHHbicPwJ7Jq+GBYMNhx1UG9Nui11BSuiZYMotWMCO6Lf3HZDuAb3aBdE65zUQ/pqYp8Gh p5TEv1Fmq1cT3aK0QLqnBbeyOAoU5IJaYX31xSxyDjM58hA+mAkC2cQPhJCnd+yXyQLYT9 5Md5GZD+H8oGJp7oKWW2osJh9jxuBb0x9qh+a48CX6e5jplWDwb0iw3YR8rHXKmxb5wJN/ 4vhdlNw4TVY3QM6qFT4PM8krLwBR5BBbvCNBPeco85AWY4MqK+XjyZ8kYkdUsQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1756848722; 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: in-reply-to:in-reply-to:references:references; bh=VLFZuz30dpa79lpxVcrr60HQRnKxDWtLmNqx3vgx7b8=; b=4OFLyBKpb+jH1AHqeowtFzp2dzv/hj3blRLlcme50Ikav16eZnJDUc4Tv0o2ZpyVNoJoLl aEJEG+qy8oSMuzCA== To: Kaiwan N Billimoria Cc: Llillian@star-ark.net, agordeev@linux.ibm.com, akpm@linux-foundation.org, alexander.shishkin@linux.intel.com, anna-maria@linutronix.de, bigeasy@linutronix.de, catalin.marinas@arm.com, chenhuacai@kernel.org, francesco@valla.it, frederic@kernel.org, guoweikang.kernel@gmail.com, jstultz@google.com, kpsingh@kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, mark.rutland@arm.com, maz@kernel.org, mingo@kernel.org, pmladek@suse.com, rrangel@chromium.org, sboyd@kernel.org, urezki@gmail.com, v-singh1@ti.com, will@kernel.org, peterz@infradead.org, elver@google.com, namcao@linutronix.de Subject: Re: [RFC PATCH] time: introduce BOOT_TIME_TRACKER and minimal boot timestamp In-Reply-To: <20250902133920.973210-1-kaiwan.billimoria@gmail.com> References: <871pp14pkr.ffs@tglx> <20250902133920.973210-1-kaiwan.billimoria@gmail.com> Date: Tue, 02 Sep 2025 23:32:01 +0200 Message-ID: <87frd4zgku.ffs@tglx> MIME-Version: 1.0 Content-Type: text/plain X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250902_143206_566512_FBB32561 X-CRM114-Status: UNSURE ( 9.06 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, Sep 02 2025 at 19:09, Kaiwan N. Billimoria wrote: > Subject: Re: [RFC PATCH] time: introduce BOOT_TIME_TRACKER and minimal boot timestamp >> Under the assumption that nothing on the way resets the counter. > Ah. Is there any known component - within ROM/BL stages/kernel code - that does > this? How should I know? I'm not playing with this boot timing muck and yes, some hardware counters can be reset by software... > Forgive my asking, but if fine, will this (above-mentioned) patch be taken? So, > knowing that, we can proceed forward.. Just send a patch with a proper justification and we take from there. Thanks, tglx