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 504A139FD9; Wed, 4 Mar 2026 01:09:10 +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=1772586550; cv=none; b=gQ/qT0S09NDYFz/0g1k4ZQKF1jSmr1rDnri7wNl+QWub5xo66/KN3u0v4ukoGwmUgG3j+xpPBiHMqgwOu1lZu6FIfz2sKZeHr2bq5Tal2D/0hJNnOyODBvIIFNRke5CamT7yDZNO8lxNoRL+naCt2Cwi4Pv5mwJiQiAfrWikZq0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772586550; c=relaxed/simple; bh=oJ7H/Fg75E5Kzd69Xj5N2aHTw22/7ssgPNPD9zCo4Bk=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=fLSM+WGpulfWveLI0o4o1Gfk88GMddhA23ViFJ5SYwOZKbxiDak+RXseh9g208dLkH7OWQI/+0K/CDHMEpryRnB8IPsKFSKom0aWe7rYltkjzZSoVLu6nqBSEJXC/KVhZORTvTWA5iHBN70gU4bbDo9KUEx1qtr2PSSWXgcLXfc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=BoUMKuth; 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="BoUMKuth" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3A519C116C6; Wed, 4 Mar 2026 01:09:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772586549; bh=oJ7H/Fg75E5Kzd69Xj5N2aHTw22/7ssgPNPD9zCo4Bk=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=BoUMKuthe9Bgwfmljqqs2QiIrb5l3nGXqd3MVBuH9pk9MjQxXYCSyvMVml8RudKp2 VRy1yEf76NEZ70+lp7e/JhnIJFYaEZaTnlewRvqTJi97OOFakCzXO/ahdLxihU1NIF ZZT5sVFWOYvATpJVh1FmdwORfDtzpAXLVKmcaVfwJ+4QpdJblD96djijIssiYHTXe6 /gHzMOpIUDEN0Ffk0Tk6Kwwc2OZ/A2qBX4WLowm57MCWTq8iBOEbmWcK/aRllB1fsj S4xJjq2Q52MtoNz/DrEnMlL6vvvSFQ1DXH9gpZto7xlgfa01eAOXakAX2bYI41bWaL 3qiP+n/9w4dSw== Date: Tue, 3 Mar 2026 17:09:08 -0800 From: Jakub Kicinski To: "D. Wythe" Cc: "David S. Miller" , Dust Li , Eric Dumazet , Paolo Abeni , Sidraya Jayagond , Wenjia Zhang , Mahanta Jambigi , Simon Horman , Tony Lu , Wen Gu , linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, linux-s390@vger.kernel.org, netdev@vger.kernel.org, oliver.yang@linux.alibaba.com, pasic@linux.ibm.com Subject: Re: [PATCH net-next v2] net/smc: transition to RDMA core CQ pooling Message-ID: <20260303170908.64a5070f@kernel.org> In-Reply-To: <20260302063737.4393-1-alibuda@linux.alibaba.com> References: <20260302063737.4393-1-alibuda@linux.alibaba.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Mon, 2 Mar 2026 14:37:37 +0800 D. Wythe wrote: > The current SMC-R implementation relies on global per-device CQs > and manual polling within tasklets, which introduces severe > scalability bottlenecks due to global lock contention and tasklet > scheduling overhead, resulting in poor performance as concurrency > increases. does not apply, please rebase & repost -- pw-bot: cr