Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Message-ID: <ca6a5aee-19c8-e0a9-60af-00e2e5abaed0@gmail.com>
Date:   Tue, 8 Nov 2022 13:25:26 +0200
MIME-Version: 1.0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101
 Thunderbird/102.3.2
Subject: Re: [PATCH v6 0/3] sched, net: NUMA-aware CPU spreading interface
Content-Language: en-US
To:     Jakub Kicinski <kuba@kernel.org>,
        Valentin Schneider <vschneid@redhat.com>
Cc:     netdev@vger.kernel.org, linux-rdma@vger.kernel.org,
        linux-kernel@vger.kernel.org, Saeed Mahameed <saeedm@nvidia.com>,
        Leon Romanovsky <leon@kernel.org>,
        "David S. Miller" <davem@davemloft.net>,
        Eric Dumazet <edumazet@google.com>,
        Paolo Abeni <pabeni@redhat.com>,
        Yury Norov <yury.norov@gmail.com>,
        Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
        Rasmus Villemoes <linux@rasmusvillemoes.dk>,
        Ingo Molnar <mingo@kernel.org>,
        Peter Zijlstra <peterz@infradead.org>,
        Vincent Guittot <vincent.guittot@linaro.org>,
        Dietmar Eggemann <dietmar.eggemann@arm.com>,
        Steven Rostedt <rostedt@goodmis.org>,
        Mel Gorman <mgorman@suse.de>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Heiko Carstens <hca@linux.ibm.com>,
        Tony Luck <tony.luck@intel.com>,
        Jonathan Cameron <Jonathan.Cameron@huawei.com>,
        Gal Pressman <gal@nvidia.com>,
        Tariq Toukan <tariqt@nvidia.com>,
        Jesse Brandeburg <jesse.brandeburg@intel.com>
References: <20221028164959.1367250-1-vschneid@redhat.com>
 <20221102195616.6f55c894@kernel.org>
From:   Tariq Toukan <ttoukan.linux@gmail.com>
In-Reply-To: <20221102195616.6f55c894@kernel.org>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Precedence: bulk


On 11/3/2022 4:56 AM, Jakub Kicinski wrote:
> On Fri, 28 Oct 2022 17:49:56 +0100 Valentin Schneider wrote:
>> Tariq pointed out in [1] that drivers allocating IRQ vectors would benefit
>> from having smarter NUMA-awareness (cpumask_local_spread() doesn't quite cut
>> it).
>>
>> The proposed interface involved an array of CPUs and a temporary cpumask, and
>> being my difficult self what I'm proposing here is an interface that doesn't
>> require any temporary storage other than some stack variables (at the cost of
>> one wild macro).
>>
>> [1]: https://lore.kernel.org/all/20220728191203.4055-1-tariqt@nvidia.com/
> 
> Not sure who's expected to take these, no preference here so:
> 
> Acked-by: Jakub Kicinski <kuba@kernel.org>
> 
> Thanks for ironing it out!

Thanks Jakub.

Valentin, what do you think?
Shouldn't it go through the sched branch?