From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 CB8A7381B1A for ; Thu, 3 Sep 2026 18:42:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788460964; cv=none; b=SRImuHeUJ0RETeu3/4KQEXQdvh3dQC8aiYH9XRCPRidjx9y9eK4QJneB7D13mnZ3pmiWZnL38FhjwrXGRMRHdnv5UKhXT8/bMsXIcQAqcY/u5f3CScd98AufPFgdWnVx8dw+3v3hMnwFQJ+NMdVByOZDiEDHBT7iTyyYK8PTxOM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788460964; c=relaxed/simple; bh=ydILn2tH86ABgtZGZW5BVnzCB8twiQzVH3NV54IP/AE=; h=Date:Message-ID:From:To:Cc:Subject:In-Reply-To:References; b=nbZPqFzveYppiX0IIUOPWTTZoqfjwU941gKir/gZ65O6qsQEFO+lYOawTcqJU27uVyc15tRa6iBj0KZ5Dv77G6pfnC9nQZ614lFOzs+kY6o9TWIam5KDbjzL9bJJWdO31+TDJ6iLRUK/5pypkHxFMLTcVL9dDWusEtG4vKepQg8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=GXDf8L9R; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="GXDf8L9R" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3AF9D1F000E9; Thu, 3 Sep 2026 18:42:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788460962; bh=nbldedxtnDAVHRfmn4fqo5vEq9ymjuTTfNdltkP/+ds=; h=Date:From:To:Cc:Subject:In-Reply-To:References; b=GXDf8L9RSgpvkZMb0t+14L5oXmmto92EqyruVh9+DJrFPe3/G3INEoGJdIum53oZ7 5lhgD/q4hXIT9WZeAf4HSyrBqHdTEk5G5vOldlMfepohyPkp7+Pcj1rvbPs5yZJO0w 4QeJhQXiCdXeGsyzwgJIN33UhCwrgGv9kZPUu9v7qGc2V8LsRq4xMFsVeh7nDOA4qM EfZYDTmO+eTvgLWGa09g/0zDzcjR7Xcki4VCADrS00EVSDKXLi2v3jth9Xj2kskiXr YwaG8L8Dpmz+bUgSWPP6Gjf3vqIBfDJcXrHPfAdU4g/Rpjnfv5SL04/9jIQWeM74UQ MWszKnU6+bzBw== Date: Thu, 03 Sep 2026 08:42:41 -1000 Message-ID: From: Tejun Heo To: Marco Crivellari Cc: linux-kernel@vger.kernel.org, Lai Jiangshan , Frederic Weisbecker , Sebastian Andrzej Siewior , Michal Hocko , Breno Leitao Subject: Re: [PATCH v2 1/2] workqueue: Make alloc_workqueue() unbound by default In-Reply-To: <20260903165251.481362-2-marco.crivellari@suse.com> References: <20260903165251.481362-1-marco.crivellari@suse.com> <20260903165251.481362-2-marco.crivellari@suse.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Hello, Marco. On Thu, Sep 03, 2026 at 06:52:50PM +0200, Marco Crivellari wrote: > + if (unlikely(!(flags & (WQ_UNBOUND | WQ_PERCPU)))) { > + flags |= WQ_UNBOUND; > + wq_unbound_by_default = true; WQ_BH without WQ_PERCPU passes the __WQ_BH_ALLOWS check above and then gets WQ_UNBOUND here, putting a BH workqueue on an unbound pool. WQ_BH should imply WQ_PERCPU. Thanks. -- tejun