From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (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 ACBCB3DDDDD; Wed, 5 Aug 2026 06:31:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=90.155.92.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785911502; cv=none; b=hnAQ1D/h0xPeTRGgLL9nubZBcn3MZIDfyNlnx4sDs6054ko57FEtUagJHcgNpSVGTLhWZ1bNwZCHqhmxpxy7uRoziqUHBorpu26XY+Si+escVRDTrs+zoIWIJt1+7nSS+FuBmbfGU13X6ZYu0xQL8oSGWRzDw0op8cfcLMvl/xE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785911502; c=relaxed/simple; bh=nFA0lF25Bq4nqR0D4ug8/xyF8GMJBvZM7N9vCwQBETU=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=JvAdF1UoCCZko7UFYllr3S5E1QW2eoxY5QPW5Pcu+XKrDYcvV0KaXij1/40BQpSTmdXrUGip/vyC3LafizT/Lmn36BcBtqKY5p3B4TjbwNFXo9P6GyowrLT3hPQQlZhX/HGo1A90+4xNLRJTXRoFMd9mmnl9q10ywy5yBiV/10A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org; spf=pass smtp.mailfrom=infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=YSyOnyhj; arc=none smtp.client-ip=90.155.92.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=pass 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="YSyOnyhj" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; 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=u79e29ibJwDcQC9ryOmu0rFOSEkZQEOMLj/CW1MrGBg=; b=YSyOnyhjAF5ckM2lGNhe8rOcat mHTak8M/BswcFRtrZZQlZpHGC9t+8nMNaw1pVO9aOyziHcNsnmF+aYcjgZ6mxQIwnClIUG3O/Z63j E1NmWw3jJqZPdScHthKn21sCzDo+W83zSMHSeodfGLlyFqpb/mgh+3/KSQ1X1ruBl5IpI+3m6rlfA S/l+TxnPbcN5DKH0TBz+XOtfDD54YdFnG9L2eFLoPcx7EvUxjJUNSXGPFMn5vb5E/BgQcpFEvaWub eBswXW7k+NTnyr9e0HDGJNTUrFbdgvvZB/kK9rEWOCCiPZ5u0SjqYNBAS0dWsFYgs5o7beCRFe0bj DZI9FjeQ==; Received: from 77-249-17-252.cable.dynamic.v4.ziggo.nl ([77.249.17.252] helo=noisy.programming.kicks-ass.net) by desiato.infradead.org with esmtpsa (Exim 4.99.2 #2 (Red Hat Linux)) id 1wrVA1-0000000AV8Q-0gQz; Wed, 05 Aug 2026 06:31:29 +0000 Received: by noisy.programming.kicks-ass.net (Postfix, from userid 1000) id 320A43004C9; Wed, 05 Aug 2026 08:31:28 +0200 (CEST) Date: Wed, 5 Aug 2026 08:31:28 +0200 From: Peter Zijlstra To: Boqun Feng Cc: Ingo Molnar , Will Deacon , Waiman Long , Gary Guo , Alice Ryhl , Lyude Paul , Daniel Almeida , Onur =?iso-8859-1?Q?=D6zkan?= , Miguel Ojeda , Danilo Krummrich , linux-kernel@vger.kernel.org, rust-for-linux@vger.kernel.org Subject: Re: [PATCH v4 02/17] preempt: Introduce HARDIRQ_DISABLE_BITS Message-ID: <20260805063128.GN776954@noisy.programming.kicks-ass.net> References: <20260804161447.84806-1-boqun@kernel.org> <20260804161447.84806-3-boqun@kernel.org> Precedence: bulk X-Mailing-List: rust-for-linux@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: <20260804161447.84806-3-boqun@kernel.org> On Tue, Aug 04, 2026 at 09:14:24AM -0700, Boqun Feng wrote: > In order to support preempt_disable()-like interrupt disabling, that is, > using part of preempt_count() to track interrupt disabling nesting > level, change the preempt_count() layout to contain 8-bit > HARDIRQ_DISABLE count. > > Signed-off-by: Lyude Paul > Signed-off-by: Boqun Feng This still isn't right. Either it needs a: 'From: Lyude ....' or so Co-developed-by or however you spell that. Since current from is Boqun, first SoB should be Boqun.