From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (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 614C835AAB2 for ; Tue, 2 Sep 2025 21:32:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756848727; cv=none; b=pOLk8njhPbrO6+Z7NBgzxRZ6I0HD36wwimNcXQaTs5Be8pMBrpe+IWD1Rerq0FUnIbDvKdOhox6/y9UG6khL48r64kZEOtas5pDhHWFvRiVxxHPtfLc97hv5HRlrQVgGBqL8uUGy8Y6UTD/Wmd+yvjpW6Be41rhjO+BiI4Bmsx4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756848727; c=relaxed/simple; bh=vunqQJ5oeuYGzfWXmT8HUR2VoyfQuEfTY9jja4+u48s=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=Se91exjjR4EoIW3bFuWdTn48j28VeBOApxF+uEeWazMkO5idZmXQQtXoK6kuhOjYPBPc4fvnhH8XHWi4gTciP2AGzbydZDePW1UpBvrTMX5bbbZ+b6sJO+XZWotvc8q7NS0O73NN/Q2mLuloHTYnT6tqYs8FA7zpzzf4xbQBLfk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=Zv6yiOdu; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=4OFLyBKp; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="Zv6yiOdu"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="4OFLyBKp" 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> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain 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