From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) (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 3B3803B1BD for ; Fri, 13 Feb 2026 10:50:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=90.155.50.34 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770979838; cv=none; b=SXjyz7Agh6wmur8fxOdj1CAvWukymEhf8yTvN6x660tZ3i1OyHFdHNUrnk2I4JfDZTxmpxGoF5cVCruixio1xoPD/d8y2C2PNheCCX4AjngKXr6yVSkoQ7672FoS35WvZco7ZBjLS/b3gddVH2Wtrq67viqDZ6085Z+s9VtijhU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770979838; c=relaxed/simple; bh=jcAvdCRbm4GVB6XkYTmK9Gw4Zbn3FhWg0P2E76IoLAo=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=E0g6rJ1tU5sBRZQtGTk9ijILZSA3YUeZCZVazrgTBU1HAgF3Vlon178m0cNydS3++yML2jGy5LqYAUCltMJBMfRciVZjZWlpuKCkckTpSt1/pEdBX0f8P6HBiWjePNSHMNPZcU858F5zBnJ5q4sdUpSsCAHhN0AbdwgZkGK8VKY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=tVDyh0zQ; arc=none smtp.client-ip=90.155.50.34 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="tVDyh0zQ" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=SUdaMj2Po2bN1x9HLTQzzxQHN6wv2Lciicg7pF8iNkE=; b=tVDyh0zQnnc7Xb5Nzk068TQX95 zUCFGAaUQ0TIWWr8z3fBl4uh4+7L7nHTZzwzX+LBBmxZxTceqYlzA4GA4gvZPA7bPwCy+H8xKSmZ5 UDuS8m/3Ggo5rWOBBSIVzxV50Kcr9++CBXkxbkRdDuotYONj3PzSFNGHt4PjvHoTa8j/Da6lqXyCW OuZe3wS8mTdHz/oCz5OoBiHvVUyJPAsQOPUnsXVXT8SR9541CRma1nEZuu70E2WPjbZzUEjMWbZOh EEC1pDuZGKos4Itm2faDdT8b99ZF+WecNGEmxbZqMQsT5iBdCebVi0djvcTH1YUGRHPTZaGvaRZF5 j7pRrSHw==; Received: from 2001-1c00-8d85-5700-266e-96ff-fe07-7dcc.cable.dynamic.v6.ziggo.nl ([2001:1c00:8d85:5700:266e:96ff:fe07:7dcc] helo=noisy.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.98.2 #2 (Red Hat Linux)) id 1vqqkg-0000000FZwk-0OeR; Fri, 13 Feb 2026 10:50:22 +0000 Received: by noisy.programming.kicks-ass.net (Postfix, from userid 1000) id 73C7A3007B5; Fri, 13 Feb 2026 11:50:20 +0100 (CET) Date: Fri, 13 Feb 2026 11:50:20 +0100 From: Peter Zijlstra To: K Prateek Nayak Cc: Vincent Guittot , Doug Smythies , mingo@kernel.org, juri.lelli@redhat.com, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, vschneid@redhat.com, linux-kernel@vger.kernel.org, wangtao554@huawei.com, quzicheng@huawei.com, wuyun.abel@bytedance.com Subject: Re: [PATCH 0/4] sched: Various reweight_entity() fixes Message-ID: <20260213105020.GB3031506@noisy.programming.kicks-ass.net> References: <20260211104833.GH1395416@noisy.programming.kicks-ass.net> <20260211162825.GZ1282955@noisy.programming.kicks-ass.net> <58c6c115-f544-4c51-990c-a3ad2fbf701a@amd.com> <20260212115943.GB1282955@noisy.programming.kicks-ass.net> <20260212171611.GL1395416@noisy.programming.kicks-ass.net> <20260212193140.GR1395266@noisy.programming.kicks-ass.net> <27217771-325a-4545-8a12-80dc6ff5112f@amd.com> <20260213064423.GB3088714@noisy.programming.kicks-ass.net> Precedence: bulk X-Mailing-List: linux-kernel@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: <20260213064423.GB3088714@noisy.programming.kicks-ass.net> On Fri, Feb 13, 2026 at 07:44:24AM +0100, Peter Zijlstra wrote: > As to wrapper, I just went through math64.h and it appears we have > div64_long() that might just DTRT, but I really need to go wake up > first. > > And as you noted, the current branch doesn't boot :/ No idea what I > messed up last night, but I did push without test building. I only > folded those two division fixed and figured what could possibly go wrong > :-) It's now got div64_long() throughout. I've build and booted each commit in a vm; build and booted the combined stack on 2 different physical machines and re-ran the various benchmarks. Works-for-me.