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 1D7B72FFF89; Fri, 28 Nov 2025 11:37:53 +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=1764329877; cv=none; b=XLZhkGuJMBYKG/3Wrqy47G7Iu08InSXkbMAfA8mJu515TtuTeSP9nHLzSgoRDKPTZ4T3IW6G3ZQQY4clhlOtXDq/fRYLXIJd5k6Q7xvNxWzicGjzkQOicLO0jxrE+CpRhI/SMqftAZufg+J41M8cRcudw30ct1slWVdQG1rj87g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764329877; c=relaxed/simple; bh=z+4jax6hlPDQ82JbshNnQ5jPCAkiEulTbneYJG3Dggw=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=kvZMpSSmpV+Et4qnW3yqJXpR1cBs7hzi4UHrGYYa9EHqLtibjS/b31Xuozac7J0n+DRCIQpiHa3+TJZ3nx6VQmJlh7/RZjXNExABWNtbUf65vcbF3xcvXyEafwMkPrC8tKijQdo2cOCvTLXjj2/40tdzlRmNF32MlQ5X744lFdM= 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=N3WxZIuX; 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=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="N3WxZIuX" 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=z+4jax6hlPDQ82JbshNnQ5jPCAkiEulTbneYJG3Dggw=; b=N3WxZIuX85mN+JGRGIcwsSovdh j6FdbRLjBg0jalmqNJf4ZIwVT5NjHlG9AjAw6j9G71zdDabhs8XQYSQHRziG7IvAxjqQBxkyqp0UU cyyG1w3H/2g9uDzY1mCkivz6kQpz6VIJjX9RytqHn+ML1JBjuAI941xsj6OFtV9NbV1fhbpdtemjs mTzfX1lqo407IfLc+oiEL1jkgJRqIhXKAIOWFyIPxJ5hXlEYZcKA29g7W43pmQQNln8bhKcZgHhUP ef6fowvwlADpafOmLG4D6hHm5+JCdN41tiVhK5uxEp64fJUN93NCRTb/z480hdbFfE/3Zf3Mc9wUQ zQw/U/rw==; 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 4.98.2 #2 (Red Hat Linux)) id 1vOvvl-0000000Bo1d-1wG8; Fri, 28 Nov 2025 10:42:25 +0000 Received: by noisy.programming.kicks-ass.net (Postfix, from userid 1000) id 1D119300230; Fri, 28 Nov 2025 12:37:45 +0100 (CET) Date: Fri, 28 Nov 2025 12:37:45 +0100 From: Peter Zijlstra To: "Paul E. McKenney" Cc: mingo@kernel.org, vincent.guittot@linaro.org, linux-kernel@vger.kernel.org, juri.lelli@redhat.com, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, vschneid@redhat.com, tj@kernel.org, void@manifault.com, arighi@nvidia.com, changwoo@igalia.com, sched-ext@lists.linux.dev Subject: Re: [PATCH 3/5] sched: Change rcu_dereference_check_sched_domain() to rcu-sched Message-ID: <20251128113745.GK3245006@noisy.programming.kicks-ass.net> References: <20251127153943.696191429@infradead.org> <20251127154725.647502625@infradead.org> <20251128105723.GZ4067720@noisy.programming.kicks-ass.net> <20251128110416.GR4068168@noisy.programming.kicks-ass.net> <87d98b6e-b534-408a-bd27-0610de0e81f4@paulmck-laptop> Precedence: bulk X-Mailing-List: sched-ext@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <87d98b6e-b534-408a-bd27-0610de0e81f4@paulmck-laptop> On Fri, Nov 28, 2025 at 03:21:41AM -0800, Paul E. McKenney wrote: > Would rcu_dereference_all_check() do what you need? Yes, clearly I should have read more of that file. Let me go try that.