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 7E1B6354ACD for ; Thu, 6 Nov 2025 17:46:19 +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=1762451181; cv=none; b=kRbW7cff6dv8EoPOwEtWkjJSBW0kv2miXFooVfQtptL3mrOgNHp0DPqvXG0zjroMZ98iqWb0m0PSB+8bG3kMvrvzO4dwtI9dHtfpJ7/JLfSw4f4s08t+51yCuJX12ROPbZCjkIaj6RYOlqOZsFHdiGwA6i3SsByCSgRabVcoOtE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762451181; c=relaxed/simple; bh=EYQGe8DbxttD5RXFpbiW2LqwBiQnZAH3ywTkIv3BEmM=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=eXuj5p2Ump5QwurRnY6j3PifQCMX8TV2TX0mhNyJgwVG+7hPNsWOWfymAsgnAhHxUB4AbUnIccFGpuYNddO8jMpPaW35owRfXpmqxn3Ye7og3S6JEYixbl+BsQVAws4E9GasWsvmxBaftW4vfhmMyghqHZpwmK6oVKrGSESYjhM= 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=U0kPMkcB; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=3fVVhBrT; 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="U0kPMkcB"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="3fVVhBrT" Date: Thu, 6 Nov 2025 18:46:14 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1762451177; 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: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=EYQGe8DbxttD5RXFpbiW2LqwBiQnZAH3ywTkIv3BEmM=; b=U0kPMkcB1nEsK0jlNG0YV7Pyt/L5c+RKocTYhmlcQ6T+XGkH0SyAoq9DjgEkZs1sVsjARX RWS+wd6YNj2vkR8R/w8S2v5ED/0MI4uXvL4KJANOqZJjo76eX6kYuoG+/aB5WgDp0T7Q7s ZpBzPXZKRuhL/Brt2jShuYSjoBUNbVfHGT3/lqi+5OMmW99J1DF1etQpSbK6znPHJxouTf KA40MWg8uUp8/E9cRFBKElBUGVYE3dvVXS7fk+W2Bar3HyeuDkswKaIuZfcSUaYfFSyTVI ZsFroyvHWDZq0GES1+VJJaA+P7yMo9QryvvJ7P+sW4O3F6k4+t719bMDDcny6w== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1762451177; 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: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=EYQGe8DbxttD5RXFpbiW2LqwBiQnZAH3ywTkIv3BEmM=; b=3fVVhBrTDC2cK2OXukAjcgJ067PvA0bK05jzls2oz4H3X5S7wC2EVZL89LGnFQdSNoZ2Er LlElZpimnz/6IPDA== From: Sebastian Andrzej Siewior To: Tejun Heo Cc: Calvin Owens , linux-kernel@vger.kernel.org, Dan Schatzberg , Peter Zijlstra Subject: Re: [PATCH cgroup/for-6.19] cgroup: Fix sleeping from invalid context warning on PREEMPT_RT Message-ID: <20251106174614.2yy65_wM@linutronix.de> References: <20251104181114.489391-1-calvin@wbinvd.org> <20251106150717.cZuPZnF5@linutronix.de> 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=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable In-Reply-To: On 2025-11-06 07:37:16 [-1000], Tejun Heo wrote: > Hello, Hi, > On Thu, Nov 06, 2025 at 04:07:17PM +0100, Sebastian Andrzej Siewior wrote: > > How important is it, that it happens right away? Written as-is, this >=20 > Not important at all. >=20 =E2=80=A6 > Will switch to IRQ_WORK_LAZY_INIT. Quick question: Since it is not important at all, would it work to have it in task's RCU callback, __put_task_struct()? > Thanks for the review. >=20 Sebastian