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From:   Valentin Schneider <vschneid@redhat.com>
To:     Tariq Toukan <ttoukan.linux@gmail.com>,
        Jakub Kicinski <kuba@kernel.org>
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        linux-kernel@vger.kernel.org, Saeed Mahameed <saeedm@nvidia.com>,
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        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>,
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        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>
Subject: Re: [PATCH v6 0/3] sched, net: NUMA-aware CPU spreading interface
In-Reply-To: <ca6a5aee-19c8-e0a9-60af-00e2e5abaed0@gmail.com>
References: <20221028164959.1367250-1-vschneid@redhat.com>
 <20221102195616.6f55c894@kernel.org>
 <ca6a5aee-19c8-e0a9-60af-00e2e5abaed0@gmail.com>
Date:   Tue, 08 Nov 2022 12:07:07 +0000
Message-ID: <xhsmhleolmyz8.mognet@vschneid.remote.csb>
MIME-Version: 1.0
Content-Type: text/plain
Precedence: bulk

On 08/11/22 13:25, Tariq Toukan wrote:
> 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?

So yeah the topology bits should go through tip/sched/core, and given it's
the only user of the new interface, the mlx5e one should probably be
bundled with them.