From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 E0E88340281; Thu, 30 Oct 2025 12:48:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761828485; cv=none; b=T55JNC6UAlEGZGkM0VrnQGoMlee2dwvVOctNj7IdFILpOzeldrGPlTE0VWm5bAS6fRRiTU/mAjmtNPmmPQmq+SHhVQqUJrfmdyF7FkNzf9DWvmkGYRw971eJwAEF/va0goKa05+flNUR+L5FQOgyGf6Lv1A2rIEz0SQATt5VH9k= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761828485; c=relaxed/simple; bh=z/TmCLUEKXNCbQR2FR3bsCd/PFGIFQxm5MYX5nhHiYk=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=VxzBX34g2+JITfj3ljZpglP5zNiTIfhqxiV0Icm32IYz7K5i0lfPObwBlH5UFKzYRbCYCwk6F8KBeAJYK2AejHq1fvKWs9I7fnwHZ5DkEeKhd2ek3i8W6URo4pmEhtbsCpojwIZDo5Ex952ADRDJrD6zF8Os/EG4Du86GslB8Kk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=bXQIkmhJ; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="bXQIkmhJ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7A024C4CEF1; Thu, 30 Oct 2025 12:48:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1761828484; bh=z/TmCLUEKXNCbQR2FR3bsCd/PFGIFQxm5MYX5nhHiYk=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=bXQIkmhJhyNbHD/vH4ojMOBpjiEHIEsGq7axLac9Wfb5ZzMNyyjBmdmK+OVZwrdrj TGN+DYg5JF3BRx+lxG1z+rLLo3yEUnY41Br7up8Wni/NKj4eb9/MtEQC5ZWkY9+liQ ROwe8TrtFAxbGJOpCwWfCevQSEIyA33BfEEeJ9BNvN9aYWg12cLyBrCpo5ywF21IS2 OY+ZJ88YupWL6/9YDnUVO9VmbEmL6JRz1I6uKEhHgT4y8bfytlizs2ahdACWJpLcCy XXFGkyXRjTKYJaf6VqSnDOQOT2WnrAWmIQrsuWTXpHJJ99vzjXfN+vdnHS3kJguPkq 6NoaDauw5FL6A== Date: Thu, 30 Oct 2025 12:47:57 +0000 From: Mark Brown To: Peter Zijlstra Cc: tj@kernel.org, linux-kernel@vger.kernel.org, mingo@redhat.com, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, vschneid@redhat.com, longman@redhat.com, hannes@cmpxchg.org, mkoutny@suse.com, void@manifault.com, arighi@nvidia.com, changwoo@igalia.com, cgroups@vger.kernel.org, sched-ext@lists.linux.dev, liuwenfang@honor.com, tglx@linutronix.de Subject: Re: [PATCH 07/14] sched: Fix do_set_cpus_allowed() locking Message-ID: <990f3ce9-d7df-4344-863a-e4b71fe957c9@sirena.org.uk> References: <20250910154409.446470175@infradead.org> <20250910155809.103475671@infradead.org> <29d7b92b-594e-4835-9dd3-3c9e2b02ada3@sirena.org.uk> <20251030090715.GQ3245006@noisy.programming.kicks-ass.net> Precedence: bulk X-Mailing-List: cgroups@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="w7/3MAhEllohHjTX" Content-Disposition: inline In-Reply-To: <20251030090715.GQ3245006@noisy.programming.kicks-ass.net> X-Cookie: Is there life before breakfast? --w7/3MAhEllohHjTX Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Thu, Oct 30, 2025 at 10:07:15AM +0100, Peter Zijlstra wrote: > On Thu, Oct 30, 2025 at 12:12:01AM +0000, Mark Brown wrote: > > We're seeing lockups on some arm64 platforms in -next with the LTP > > cpuhotplug02 test, the machine sits there repeatedly complaining that > > RCU is stalled on IPIs: > Did not this help? > https://lkml.kernel.org/r/20251027110133.GI3245006@noisy.programming.kicks-ass.net It looks like that hadn't landed in yesterday's -next - it showed up today and things do indeed look a lot happier, thanks! --w7/3MAhEllohHjTX Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmkDXnwACgkQJNaLcl1U h9CkSgf+MBexVKsLYF9KOOfxlRxNgU3VjK+zpctbbqvVj7cgaBu15pdOgguhX8pY FMsAWORE70ktq7z/M5Q63I9bSZ6ecqvMHqfz3co4IxWJn0f0P+iK+PMsqfvJOU8z wIEe7xfFY0PzYX58ZaO3MQXUMkQxhipaLUO97mPLgdB4Y8f0EJxuJbpSuHkVHBX5 GBoBl/HbkJGvOeGCDF3hRY7wa72ww+8LDNPqzdxiM4avg2fXtsFmiTYBq/pyKkuh Htd5JrkeJKcZLb3zx/+m/J+LnLsxOpuTc5J0vZ/7Q2mn+1CWCAGEWm5xEBm8ygWm iEQ4Ne7Ac5+qb0AsbyIztfUFOWZ9DA== =G62n -----END PGP SIGNATURE----- --w7/3MAhEllohHjTX--